DISPLAY DEVICE
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`CROSS-REFERENCE TO RELATED APPLICATION
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`[0001] This application is a continuation of U.S. Patent Application No. 16/272,264,filed
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`February 11, 2019, which is a continuation of U.S. Patent Application No. 15/192,939, filed Fune
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`24, 2016, which issued as U.S. Patent No. 10,234,982, andclaims priority to and the benefit of
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`Korean Patent Application No. 10-2015-0154604, filed November 4, 2015, each of whichis
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`hereby incorporated by reference for all purposes asif fully set forth herein.
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`BACKGROUND
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`[0002] FIELD
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`[0063] Exemplary embodiments relate to a display device, and, more particularly, toa
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`display device including a touch sensing unit.
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`[0004] DISCUSSION
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`[0005] Various display devices are used in association with multimedia devices, suchas
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`televisions, mobile phones, tablet computers, navigational equipment, game consoles, etc. These
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`multimedia devices may include an input device to facilitate user interaction, such as keyboards,
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`mice, etc. Additionally, display devices may include touch sensing units as input devices.
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`[0006] The above information disclosed in this Background section is only for
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`enhancement of understanding of the background ofthe inventive concept, and, therefore, it may
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`contain information that does not form the prior art that is already known to a person of ordinary
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`skill in the art.
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`SUMMARY
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`[0007] One or more exemplary embodiments provide a display device including a touch
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`sensing unit with improved sensitivity.
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`[0068] Additional aspects will be set forth in the detatled description whichfollows, and,
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`in part, will be apparent from the disclosure, or may be learned by practice of the inventive
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`concept.
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`{0009} According to one or more exemplary embodiments, a display device includes a
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`display panel configured to generate an image; and a touch sensing unit disposed on the display
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`panel, the touch sensing unit including touch signal lines and sensor columns including sensor
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`blocks. Each of the sensor blocks includes: a first sensor, andi @ being a natural number greater
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`than or equal to two) second sensors arranged ina first direction. The touch signal lines include:
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`first signal lines respectively connected to some ofthe first sensors, a portion of each of the first
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`signal lines extending to a first end of a corresponding sensor column of the sensor columns from
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`a corresponding sensor of the some ofthe first sensors; second signal lines respectively
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`connected to other first sensors of the first sensors, a portion of each of the second signal lines
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`extending to a second end of the corresponding sensor column of the sensor columns from a
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`corresponding sensor of the other first sensors, and third signal lines connecting a j-th G being a
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`natural numberless than or equal to one} second sensor of the 1 second sensors of an n-th (n
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`being a natural number greater than or equal to one) sensor block of the sensor blocks to an (-
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`f+i}-th second sensor of the i second sensors of an (n+1)-th sensor block of the sensor blocks.
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`[0010] According to one or more exemplary embodiments, a display device includes a
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`display panel configured to generate an image; and a touch sensing unit disposed on the display
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`panel, the touch sensing unit including touch signal lines and sensor columns. Each of the sensor
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`columns includes sensor blocks arrangedin a first direction. Each of the sensor blocks includes:
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`a first sensor, and i @ being a natural number greater than or equal to two) second sensors
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`adjacent to the first sensor, the 1 second sensors being arranged inthefirst direction. The touch
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`signal lines include: first signal lines connected to the first sensors of the sensor blocks; and
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`second signal lines connecting a j-th G being a natural number greater than or equal to one and
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`less than or equal to i) second sensor of the 1 second sensors of an n-th (n being a natural number
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`greater than or equal to one) sensor block ofthe sensor blocks to an G-j+1)-th second sensor of
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`the 1 second sensors of an (n+1)-th sensor block of the sensor blocks. The first sensor of the
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`(n+1)-th sensor block includes: a first sensor portion; and a second sensor portion spaced apart
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`from the first sensor portion in a second direction crossing the first direction. A first signal line
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`of the first signal lines that is connectedto thefirst sensor of the n-th sensor block is disposed
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`betweenthe first sensor portion and the second sensorportion.
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`[0011] According to one or more exemplary embodiments, an external input maybe
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`sensed using a touch sensing unit having a single-layer structure. Furthermore, a single-touch
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`and a multi-touch may be distinguished from each other. Since the second sensors
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`corresponding to different sensor blocks from each otherare electrically connected to each other
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`through a signal line, the number of the signal lines disposed on the touch sensing unit maybe
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`reduced. In this manner, a potential for short-circuits between the signal lines may be reduced.
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`Moreover, noise caused, at least in part, by the signal lines may be reduced, which may improve
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`touch sensitivity.
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`[0012] According to one or more exemplary embodiments, among the signal lines
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`connected to the first sensors, a portion ofthe signal lines and another portion of the signal lines
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`extend in different directions from each other such that the number ofsignal lines disposed
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`te
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`between the first sensor and the second sensors may be reduced. In this manner, noise exerting
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`influence on capacitance formed betweenthe first sensor and the second sensors maybe reduced.
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`[0013] The foregoing general description and the following detailed description are
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`exemplary and explanatory and are intended to provide further explanation of the claimed
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`subject matter.
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`BRIEF DESCRIPTION OF THE DRAWINGS
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`[0014] The accompanying drawings, which are included to provide a further
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`understanding of the inventive concept, and are incorporated in and constitute a part of this
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`specification, illustrate exemplary embodiments of the inventive concept, and, together with the
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`description, serve to explain principles of the inventive concept.
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`[00135] FIG. 1 is a perspective view of a display device, according to one or more
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`exemplary embodiments.
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`{0016] FIG. 2 is an exploded perspective viewof the display device of FIG. 1, according
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`to one or more exemplary embodiments.
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`[0017] FIG. 3 is a cross-sectional view ofthe display device of FIG. 1 taken along
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`sectional line LI’, according to one or more exemplary embodiments.
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`[0018] FIG. 41s an enlarged cross-sectional view of a touch sensing unit, according to
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`one or more exemplary embodiments.
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`[0019] FIG. 5 is a plan view ofthe touch sensing unit of FIG. 4, according to one or more
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`exemplary embodiments.
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`[6020] FIG. 6is a plan viewofa sensor block, according to one or more exemplary
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`embodiments.
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`(O021} FIG. 7A is an enlarged plan view of a touch sensing unit, according to one or
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`miore exemplary embodiments.
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`[0022] FIG. 7B is a plan viewof two sensor blocks, according to one or more exemplary
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`embodiments.
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`[0023] FIG. 7C is a plan view of two sensor blocks, according to a comparative example.
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`[6024] FIG. & is an enlarged plan viewof a second circuit board of the touch sensing unit
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`of FIG. 5, according to one or more exemplary embodiments.
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`[0025] FIGS. OA and OBare block diagrams of a driving circuit of a touch sensing unit,
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`according to one or more exernplary embodiments.
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`10
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`[0026] FIGS. LOA, 10B, 19C, and 10D are enlarged plan views of a touch sensing unit,
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`according to one or more exemplary embodiments.
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`[0027] FIG. 11A 4s a plan viewof a touch sensing unit, according to one or more
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`exemplary embodiments.
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`{6028] FIG. 11B is an enlarged plan viewof the touch sensing unit of FIG. 11A,
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`according to one or more exemplary embodiments.
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`[0029] FIG. 12A is a plan viewof a touch sensing unit, according to one or more
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`exemplary embodiments.
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`[0030] FIG. 12B is an enlarged plan viewofthe touch sensing unit of FIG. 12A,
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`according to one or more exemplary embodiments.
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`[0031] FIG. 13 is an enlarged cross-sectional view of a display panel, according to one or
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`more exemplary embodiments.
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`[0032] FIG. 14 is a plan view ofthe display panel of FIG. 13, according to one or more
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`exemplary embodiments.
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`{0033} FIG. 15 is an equivalent circuit diagram of a pixel, according to one or more
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`exemplary embodiments.
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`[0034] FIG. 16 is 4 plan view ofa touch sensing unit, according to one or more
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`exemplary embodiments.
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`[0035] FIG. 17 is an enlarged plan viewof the touch sensing unit of FIG. 16, according
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`to one or more exemplary embodiments.
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`[0036] FIG. 181s an enlarged plan view ofa first circuit board of the touch sensing unit
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`of FIG. 17, according to one or more exemplary embodiments.
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`{0037} FIG. 191s an enlarged plan view of a second circuit board of the touch sensing
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`unit of FIG. 17, according to one or more exemplary embodiments.
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`[0038] FIG. 20 is 4 plan view ofa touch sensing unit, according to one or more
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`exemplary embodiments.
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`[0039] FIG. 21 is an enlarged plan viewof a circuit board, according to one or more
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`exemplary embodiments.
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`[0040] FIG. 221s a plan viewof a touch sensing unit, according to one or more
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`exemplary embodiments.
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`(O041} FIG. 23 is an enlarged plan view of a circuit board, according to one or more
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`exemplary embodiments.
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`DETATLED DESCRIPTION OF THE TLLUSTRATED EMBODIMENTS
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`[0042] In the following description, for the purposes of explanation, numerous specific
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`details are set forth in order to provide a thorough understanding of various exemplary
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`embodiments. [tis apparent, however, that various exemplary embodiments maybe practiced
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`without these specific details or with one or more equivalent arrangements. In other instances,
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`well-known structures and devices are shown in block diagram forrn in order to avoid
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`unnecessarily obscuring various exemplary embodiments.
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`[0043] Unless otherwise specified, the illustrated exemplary embodiments are to be
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`understood as providing exemplary features of varying detail of various exemplary
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`embodiments. Therefore, unless otherwise specified, the features, cormponents, modules, layers,
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`films, panels, regions, and/or aspects of the various illustrations may be otherwise combined,
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`separated, interchanged, and/or rearranged without departing from the disclosed exemplary
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`embodiments. Further, in the accompanying figures, the size and relative sizes of layers, films,
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`panels, regions, etc., may be exaggerated for clarity and descriptive purposes. When an
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`exemplary embodiment may be implemented differently, a specific process order may be
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`performed differently from the described order. For example, two consecutively described
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`processes may be performed substantially at the same time or performed in an order opposite to
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`the described order. Also, like reference numerals denote like elements.
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`[0044] When an clement orlayeris referred to as being “on,”
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`“connected to,” or
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`93 68
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`“coupled to” another element or layer, it may be directly on, connected to, or coupled to the other
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`element or layer or intervening elements or layers may be present. When, however, an element
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`or layer is referred to as being “directly on,” “directly connectedto,” or “directly coupledto”
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`another elementor layer, there are no intervening elements or layers present. Further, the DR1-
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`axis, the DR2-axis, and theDR3-axis are not limited to three axes of a rectangular coordinate
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`system, and may be interpreted in a broader sense. For example, the DR1-axis, the DR2-axis,
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`and the DR3-axis may be perpendicular to one another, or may represent different directions that
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`are not perpendicular to one another. For the purposes ofthis disclosure, “at least one of X, Y,
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`and Z” and “at least one selected from the group consisting of X, Y, and 2” may be construed as
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`x only, Y only, Z only, or any combination of two or more of X, Y, and Z, such as, for instance,
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`XYZ, XYY, YZ, and ZZ. Like numbersrefer to like elements throughout. As used herein, the
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`term “and/or” includes any and all combinations of one or more of the associated listed items.
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`[0045] Although the terms “first,” “second,” etc. may be used herein to describe various
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`elements, components, regions, layers, and/or sections, these elements, components, regions,
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`layers, and/or sections should not be limited by these terms. These terms are used to distinguish
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`one element, component, region, layer, and/or section from another element, component, region,
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`layer, and/or section. Thus, a first element, component, region, layer, and/or section discussed
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`belowcould be termed a second element, component, region, layer, and/or section without
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`departing fromthe teachings of the present disclosure.
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`[0046] Spatially relative terms, such as “beneath,” “below,” “lower,” “above,” “upper,”
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`and the like, may be used herein for descriptive purposes, and, thereby, to describe one element
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`or feature's relationship to another element(s} or feature(s) as illustrated in the drawings.
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`Spatially relative terms are intended to encompass different orientations of an apparatus in use,
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`operation, and/or manufacture in addition to the orientation depicted in the drawings. For
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`example, ifthe apparatus in the drawings is turned over, elements described as “below” or
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`“beneath” other elements or features would then be oriented “above” the other elements or
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`features. Thus, the exernplary term “below” can encompass both an orientation of above and
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`below. Furthermore, the apparatus may be otherwise ortented (e.g., rotated 90 degrees or at
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`other orientations}, and, as such, the spatially relative descriptors used herein interpreted
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`accordingly.
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`[0047] The terminology used herein is for the purpose of describing particular
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`ce
`embodiments and is not intended to be limiting. As used herein, the singular forms, “a,” “an,
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`rae
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`and “the” are intended to include the plural forms as well, unless the context clearly indicates
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`otherwise. Moreover, the terms “comprises,” “comprising,” “includes,” and/or “including,”
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`when used in this specification, specify the presence of stated features, integers, steps,
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`operations, elements, components, and/or groups thereof, but do not preclude the presence or
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`addition of one or more other features, integers, steps, operations, elernents, components, and/or
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`groups thereof.
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`[9048] Various exemplary embodiments are described herein with reference to sectional
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`illustrations that are schematic illustrations of idealized exemplary embodiments and/or
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`intermediate structures. As such, variations from the shapes ofthe illustrations as a result, for
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`example, of manufacturing techniques and/ortolerances, are to be expected. Thus, exemplary
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`embodiments disclosed herein should not be construed as limited to the particular illustrated
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`shapes of regions, but are to include deviations in shapes that result from, for instance,
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`manufacturing. For example, an implanted region illustrated as a rectangle will, typically, have
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`rounded or curved features and/or a gradient of implant concentration at its edges rather than a
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`binary change from implanted to non-implanted region. Likewise, a buried region formed by
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`implantation may result in some implantation in the region between the buried region and the
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`surface through which the implantation takes place. Moreover, although a layer (or other
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`feature) maybe illustrated as “flat,” the layer may not necessarily be required to be flat. Tothis
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`end, a step difference may occur on a relatively upper layer due to a surface shape of arelatively
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`lower layer during, for instance, a stacking process. Thus, the regions illustrated in the drawings
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`are schematic in nature and their shapes are not intendedto illustrate the actual shape of a region
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`of a device and are not intended to be limiting.
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`{0049} Uniess otherwise defined, all terms Gncluding technical and scientific terms} used
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`herein have the same meaning as commonly understood by one ofordinaryskill inthe art to
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`whichthis disclosure is a part. Terms, such as those defined in commonlyused dictionaries,
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`should be interpreted as having a meaning that is consistent with their meaning in the context of
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`the relevant art and will not be interpreted in an idealized or overly formal sense, unless
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`expressly so defined herein.
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`[0050] FIG. 1 is a perspective viewof a display device, according to one or more
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`exemplary embodiments. FIG. 2 is an exploded perspective viewof the display device of FIG. 1,
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`according to one or more exemplary embodiments. FIG. 3 is a cross-sectional view of the
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`display device of FIG. | taken along sectional line [-I’, according to one or more exemplary
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`embodiments. As will become more apparent below, a protective frame 200 of the display
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`device DA of FIG. | is not shown in FIG. 3.
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`[0051] A display surface configuredto display an image IMis parallel (or substantially
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`parallel) to a surface defined bya first direction DR1 and a second direction DR2. A third
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`direction DR3 indicates a normal direction of the display surface. The third direction DR3
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`indicates a thickness direction of the display device DA. Front and rear surfaces of each member
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`of the display device DAare distinguished by (or otherwise spaced apart from one anotherin)
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`the third direction DR3. It is noted, however, that the directions indicated by the first, second,
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`and third directions DR1, DR2, and DR3 are relative and may be converted into other directions.
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`{0052} Although FIG. 1 illustrates a “flat” display device DA as a representative
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`example, it is contemplated that exemplary embodiments are not be limited thereto. For
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`instance, the display device DA maybe a curved display device with a determined curvature, a
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`rollable display device, a foldable display device, a flexible display device, etc. Although not
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`shown separately, the display device DA maybe used in or in association with smail and
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`medium-sized electronic devices, such as mobile phones, personal computers, notebook
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`computers, tablets, personal digital terminals, vehicle navigation units, game consoles, portable
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`electronic devices, wristwatch-type electronic devices, refrigerators, washers, dryers, etc., in
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`addition to large-sized electronic devices, such as televisions, monitors, outdoor billboards, etc.
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`[6053] Referring to FIG. 1, the display device DA includes a plurality of areas distinct
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`from each other on the display surface. For instance, the display device DA includes a display
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`area DRin which the image IMis displayed, and a non-display area NDRadjacentto the display
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`area DR. FIG. | illustrates an internet search windowas a representative example of the image
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`IM, but exemplary embodiments are not limited thereto. As an example, the display area DR.
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`may have a quadrangular shape, but any other suitable geometric configuration may be utilized
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`in association with exemplary embodiments described herein. The non-display area NDR may
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`surround the display area DR. According to one or more exemplary embodiments, the non-
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`display area NDR maybe disposed only in areas adjacent to the display area DR in the first
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`direction DRI or the second direction DR2, in whichthe areas face each other and the display
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`area DRis disposed therebetween. According to one or more exemplary embodiments, the non-
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`display area NDR maybe omitted.
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`[0054] As shown in FIGS. 2 and 3, the display device DA includes a window member
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`100, a protective frame 200, a display panel 300, and a touch sensing umt 400. The display
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`device DA includesa first circuit board 300-F and a second circuit board 400-F that are
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`respectively connected to the display panel 300 and the touch sensing unit 400. At least one of
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`the first and secondcircuit boards 300-F and 400-F maybe, but is not limited to, a flexible
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`circuit board. The second circuit board 400-F mayinclude a driving circurt 400-IC mounted
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`i]
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`thereon. The driving circuit 400-IC may drive the touch sensing unit 400 and maybe, but is not
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`limited to, a driver integrated circuit @C). Although not shown, a driving circuit, e.g., a driver
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`IC, may be mounted onthe first circuit board 300-F to drive the display panel 300.
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`[0035] Each of the window member 100, the display panel 300, and the touch sensing
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`unit 400 includes areas corresponding to the display area DR and the non-display area NDRof
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`the display device DA when viewed in a plan view. In FIG. 3, widths in the first direction DRI
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`of the window member100, the display panel 300, and the touch sensing unit 400 are same each
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`other, but the widths of the window member 100, the display panel 300, and the touch sensing
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`unit 400 maybe selectively changed.
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`[0056] The window member 100 includes a base member 100-BS and a black matrix
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`BM. Theblack matrix BMis disposed on a rear surface of the base member 100-BS to define
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`the non-display area NDR. The base member 100-BS includes a glass substrate, a sapphire
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`substrate, a plastic film, or the like. The black matrix BM maybe formed via a coating manner
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`using a colored organic layer. Although not shown in figures, the window member 100 may
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`further include a functional coating layer disposed on a front surface of the base member 100-
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`BS. The functional coating layer may include an anti-fingerprint layer, an anti-glare layer, and a
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`hard coating layer.
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`{0057} The protective frame 200 is coupled to the window member 100 to accommodate
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`the display panel 300 and the touch sensing unit 400. The protective frame 200 may be formed
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`by assembling a numberof parts or may be integrally formed in a single unitary and individual
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`unit, which may be formed via an injection, compression, extrusion, etc., molding process{es).
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`The protective frame 200 mayinclude a plastic or metal material. According to one or more
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`exemplary embodiments, the protective frame 200 may be omitted.
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`{0058} The display panel 300 generates the image IMcorresponding to image data
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`applied thereto. The display panel 300 may be a liquid crystal display panel, an organic light
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`emitting display panel, or any other suitable display panel. For descriptive convenience, an
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`organic light emitting display panel will be described as the display panel 300. The organic light
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`emitting display panel will be described in more detail later.
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`{6059} The touch sensing unit 400 obtains coordinate information of a position at which
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`a touch event occurs. The touch sensing unit 400 maybe, but is not limited to, an electrostatic
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`capacitive type touch sensing unit. The touch sensing unit 400 will be described in more detail
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`later.
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`[0060] The window member 100 and the touch sensing unit 400 are coupled to each
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`other bya first optically clear adhesive film OCA and the touch sensing unit 400 and the
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`display panel 300 are coupled to each other by a second optically clear adhesive film OCA2.
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`One of the two optically clear adhesive films OCAI and OCA2 may be omitted. For instance,
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`when the display panel 300 and the touch sensing unit 400 are manufactured through consecutive
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`processes, the touch sensing unit 400 maybe directly disposed on the display panel 300.
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`In
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`addition, the touch sensing unit 400 may be formed while the display panel 300 is manufactured,
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`and, as such, the touch sensing unit 400 may be integrally formed with the display panel 300.
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`[0061] FIG. 41s an enlarged cross-sectional viewof a touch sensing unit, according to
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`one or more exemplary embodiments. FIG. 5 is a plan view of the touch sensing unit of FIG. 4,
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`according to one or more exemplary embodiments. FIG. 6is a plan viewof a sensor block,
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`according to one or more exemplary embodiments. FIG. 7A is an enlarged plan view of a touch
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`sensing unit, according to one or more exemplary embodiments. FIG. 7B is a plan viewof two
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`sensor blocks, according to one or more exemplary embodiments. FIG. 7C is a plan viewof two
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`sensor blocks, according to a comparative example. Hereinafter, the touch sensing unit 400 will
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`be described in more detail with reference to FIGS. 4 to 6 and 7A to 7C.
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`[0062] Referring to FIG. 4, the touch sensing unit 400 includes a base member 400-BS, a
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`conductive layer 400-CL, and an insulating layer 400-IL. According to one or more exemplary
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`embodiments, the touch sensing unit 400 maybe, but is not limitedto, a single-layer electrostatic
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`capacitive type touch sensing unit. The single-layer electrostatic capacitive type touch sensing
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`unit obtains the coordinate information about the position, at which a touch (or near touch) event
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`occurs, using a self-capacitance manner or a mutual capacitance manner. The touch sensing unit
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`400, however, should not be limited to a single-layer electrostatic capacitive type touch sensing
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`unit. The touch sensing unit 400 maybe, but is not limited to, a multi-layer electrostatic
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`capacitive type touch sensing unit. In addition, the touch sensing unit 400 mayhavedifferent
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`layer structures depending on the display area DR and the non-display area NDR. According to
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`one or more exemplary embodiments, the display area DR may have a single-layer structure and
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`the non-display area NDR rayhave a multi-layer structure. For instance, only one conductive
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`layer may be disposed in the display area DR, and a plurality of conductive layers maybe
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`alternately stacked with a plurality of insulating layers in the non-display area NDR.
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`{0063} The conductive layer 400-CL mayinclude at least one of a transparent conductive
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`layer and a metal layer. The transparent conductive layer mayinclude indium tin oxide (TO),
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`indium zinc oxide (ZO), zinc oxide (ZnO), indiumtin zinc oxide UTZQ), poly(3,4-
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`ethylenedioxythiophene} (PEDOT), metal nanowire, or graphene. The metal layer may include
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`molybdenum,silver, titanium, copper, aluminum, or an alloy thereof. According to one or more
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`exemplary embodiments, the conductive layer 400-CL mayinclude a plurality oftransparent
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`conductive layers or a plurality of conductive layers. The conductive layer 400-CL may include
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`at least one transparent conductive layer and at least one metal layer. The conductive layer 400-
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`CL may have a mesh structure. For instance, a plurality of mesh holes maybe defined through
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`the conductive layer 400-CL. According to one or more exemplary embodiments, the
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`conductive layer 400-CL mayinclude nanowires manufactured using at least one of the above-
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`mentioned metal materials.
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`[6064] The conductive layer 400-CL mayinclude a plurality of conductive patterns
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`disposed on a surface of the base member 400-BS. The conductive patterns form touch sensors
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`and touch signal lines of the touch sensing unit 400 as described below. The touch sensors and
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`the touch signal lines mayinclude the same material or different materials from each other. The
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`10
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`insulating layer 400-IL protects the conductive patterns. The insulating layer 400-IL includes an
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`inorganic layer and/or an organic layer. The insulating layer 400-TL may have asingle-layer
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`structure or a multi-layer structure.
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`[0065] As shown in FIG. 5, the touch sensing unit 400 includes sensor blocks SB
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`disposed in the display area DR. The touch signal lines connected to the sensor blocks SB are
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`not shownin FIG. 5. The sensor blocks SB define a plurality of sensor columns TSC and/ora
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`plurality of sensor rows TSL. FIG. 5 shows the sensor blocks SB arranged in a matrix form, but
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`arrangements should not be limited thereto or thereby. The sensor columns TSC mayinclude
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`different numbers of sensor blocks SB, and the sensor rows TSL mayinclude different numbers
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`of sensor blocks SB. The sensor columns TSC and/or the sensor rows TSL may be defined in a
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`diagonal direction on the surface of the base member 400-BS. Each of the sensor blocks SB may
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`include a first sensor RP and a plurality of second sensors TP. FIG. 5 shows the sensor blocks
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`SB including one integrated-type first sensor RP andthree secondsensors TP as a representative
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`example.
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`

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`{0066} The second circuit board 400-F is connected to the non-display area NDR of the
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`touch sensing unit 400. The second circuit board 400-F has a circuit configuration that maybe
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`changed according to the configuration of the touch sensing unit 400. Although not shown in
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`detail, the touch sensing unit 400 and the second circuit board 400-Fare electrically connected to
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`each other by an anisotropic conductive film (ACF). According to one or more exemplary
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`embodiments, the anisotropic conductive film maybe replaced with a solder bump.
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`[0067] Hereinafter, the sensor block SB will be described in detail with reference to FIG.
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`6. The sensor block SB include the first sensor RP and i (i being a natural number greater than
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`or equal to 2} second sensors TPi to TPi disposed adjacent to the first sensor RP and arranged in
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`10
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`a determined direction, e.g., the second direction DR2. The i second sensors TP] to TPi form a
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`sensor group TP-G. That is, i number of second sensors TP to TPi form a sensor group TP-G.
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`The number of the first sensors RP included in the sensor block SB maybe determined based on
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`the number ofthe first sensors RP electrically insulated from each other. Although the sensor
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`block SB includes two conductive patterns, two conductive patterns electrically connectedto
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`each other by a touch signal line are referred to as one sensor. This is equally applicable to the
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`second sensor TP. That is, the 1 second sensors TP] to TPt shown in FIG. 6 are electrically
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`insulated from each other. The direction in which the second sensors TP are arranged is not
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`limited to a specific direction and may be the same as a direction in which the first sensor RP
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`extends. The second sensors TP maybearranged in the second direction DR2 as shown in
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`FIGS. 5 and 6, or in a direction in which the sensor column TSCextends as shown in FIG. S.
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`[0068] FIG. 7A showsfour sensor columns TSC1 to TSC4 each including four sensor
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`blocks SB. For descriptive and illustrative convenience, reference numerals are assignedto a
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`first sensor column TSC1. Hereinafter, the reference number ofthe sensor columns TSCI to
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`16
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`

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`TSC4 increases from a left columnto a right column, the reference numberof the sensor rows
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`TSLI to TSL4increases from an upper row to a lower row, and the reference numberof the
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`sensors TP increases from an upper portion to a lower portion.
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`[0069] As shown in FIG. 7A, the touch signal lines includefirst signal lines SLI, second
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`signal lines SL2, and third signal lines SL3. First pads PD1 are respectively connectedto first
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`end ofthe first signal lines SL1 and second pads PD2 are respectively connected to second ends
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`of the second signal lines SL2. Third pads PD3 are respectively connected to second ends ofthe
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`third signal lines SL3.
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`{0070} The first signal lines SLI are respectively connected to the first sensors RP of a
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`10
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`portion of the sensor blocks SB in the sensor column TSC, andthe second signal lines SL2 are
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`respectively connected to the first sensors RP of anotherportion of the sensor blocks SB in the
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`same sensor column TSC. Among thefirst signal lines SLI, one first signal line SL1-1 is
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`connected to the first sensor RP of the first sensor block SB and onefirst signal line SLI-2 is
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`connected to the first sensor RP in a second sensor block SB. Among the secondsignal lines
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`SL2, one second signal line SL2-1 1s connected to the first sensor RP ofa third sensor block SB
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`and one second signal line $L2-2 is connected to the first sensor RP in a fourth sensor block SB.
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`{0071} At least a portion of each of the first signal lines SL1 extends in a first end (e.g.,
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`an upper end in FIG. 7A) of a corresponding sensor column TSC from a correspondingfirst
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`sensor RP, and at feast a portion of each of the second signal lines SL2 extends in a second end
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`(e.g., a lower end in FIG. 7A) of a corresponding sensor column TSCfrom a corresponding first
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`sensor RP. For instance, each of the first signal lines SL1 includes a first portion LP1 connected
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`to the corresponding first sensor RP and extending in the first end of the correspond sensor
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`column TSC and a second portion LP2 connecting the first portion LPI and a correspondingfirst
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`17
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`

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`pad PDI. The first portion LP1 of each of the first signal lines SL1 extendsin the direction of
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`the sensor colurmn TSC and is not overlapped with the second signal lines SL2 in the direction of
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`the sensor row TSL. The second portion LP2 ofeachofthe first signal lines SL1 is disposedin
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`the non-display area NDR. In this manner, the second portion LP2 of each of the first signal
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`lines SLI is overlapped with the black matr