(1 9)
`
`(12)
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`b (11)
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`i Europaisches
`Patentamt
`European
`Patent Office
`Office européen
`
`EUROPEAN PATENT APPLICATION
`
`EP 3 786 693 A1
`
`(43) Date of publication:
`03.03.2021 Bulletin 2021/09
`
`(21) Application number: 20193131.8
`
`(22) Date offiling: 27.08.2020
`
`(84) Designated Contracting States:
`AL AT BE BG CH CY CZ DE DK EE ESFI FR GB
`GR HR HU IE ISITLILTLU LV MC MK MT NL NO
`PL PT RO RS SE SISK SM TR
`
`Designated Extension States:
`BA ME
`
`Designated Validation States:
`KH MA MD TN
`
`(30) Priority: 29.08.2019 US 201962893802 P
`12.06.2020 CN 202010533121
`
`(71) Applicant: InnoLux Corporation
`Chu-Nan, Miao-Li County 35053 (TW)
`
`(54)
`
`DISPLAY DEVICE
`
`
`
`(51)
`
`Int CL:
`GO2F 1/1333 (2006.01)
`HO1L 27/32 (2006.07)
`
`GO2F 1/1335 (2006.01)
`HO1L 25/075 (2006.91)
`
`Inventors:
`(72)
`¢ CHEN, Yi-An
`35053 Miao-Li County (TW)
`« HUANG, Wan-Ling
`35053 Miao-Li County (TW)
`« HSIEH, Tsau-Hua
`35053 Miao-Li County (TW)
`
`(74) Representative: Schmidbauer, Andreas Konrad
`Wagner & Geyer Partnerschaft mbB
`Patent- und Rechtsanwalte
`Gewurzmiuhlstrasse 5
`
`80538 Miinchen (DE)
`
`The display device includes a first unit, and a
`(57)
`plurality of second units. The first unit includesa first sub-
`strate, and a light blocking structure disposed on the first
`substrate. The light blocking structure has a plurality of
`first openings. Each one of the second units includes a
`
`second substrate, and a plurality of light emitting diodes
`disposed on the second substrate. The light emitting di-
`odes correspond to a portion of the first openings. The
`second units are adhered to the first unit.
`
`Zz
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`Las
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`260
`alJ
`240 210
`W4
`261
`262
`263
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`|(200)
`(200)
`a
`YI |
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`=TBos * : Ee300
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`HINO EE
`CORA SERQ RG
`100
`PN
`A
`120
`110
`122
`A
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`201
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`202
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`EP3786693A1
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`Printed by Jouve, 75001 PARIS (FR)
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`EP 3 786 693 A1
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`Description
`
`BACKGROUND OF THE INVENTION
`
`1. Field of the Invention
`
`[0001] The present disclosure relates to an electronic
`device, in particular to a display device.
`
`2. Description of Related Art
`
`[0002] With the rapid developmentof electronic prod-
`ucts, the display technology applied to the electronic
`products is also being constantly improved. In order to
`achieve a large format display,
`it
`is necessary to use
`spliced displays. Electronic devices usedfor display are
`constantly improved towards display effects of larger and
`higher resolution images.
`
`SUMMARY OF THE INVENTION
`
`[0003] The present disclosure provides a display de-
`vice with good display quality or visual effect.
`[0004] According to an embodimentofthe presentdis-
`closure, the display device includesa first unit and a plu-
`rality of second units. The first unit includes a first sub-
`strate and a light blocking structure. The light blocking
`structure is disposed on the first substrate, and the light
`blocking structure has a plurality of first openings. Each
`one of the plurality of second units includes a second
`substrate and a plurality of light emitting diodes. The plu-
`rality of light emitting diodes are disposed on the second
`substrate, and the light emitting diodes correspond to a
`portion of the plurality of first openings. The plurality of
`second units are adhered to the first unit.
`
`[0005] Based on the above, the display device of the
`embodiment of the present disclosure includesthe first
`unit and the plurality of second units, and the plurality of
`light emitting diodes on the second units are disposed
`correspondingto the first openings ofthe first unit. Since
`the plurality of second units may be disposed and spliced
`directly on the first unit, a manufacturing process of the
`display device may be simplified. A frame size of the sec-
`ond units may further be reduced. Therefore, the display
`device may achievethe visual effect of seamlesssplicing
`or have gooddisplay quality. In addition, a gap between
`two adjacent second units may be blocked by the light
`blocking structure of the first unit.
`In this way, the gap
`and/or a splicing line between the two adjacent second
`units may not be easily observed by a user. Therefore,
`the display device has good display quality or visual ef-
`fect.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`[0006]
`
`FIG.
`
`1
`
`is a schematic top view diagram of a display
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`device in an embodimentof the present disclosure.
`FIG. 2 is a schematic cross-sectional diagram of the
`display device in FIG. 1 along a cross-sectional line
`A-A’.
`
`FIG. 3 is a schematic cross-sectional diagram of a
`display device in another embodiment of the present
`disclosure.
`
`FIG. 4 is a schematic cross-sectional diagram of a
`display device in another embodiment of the present
`disclosure.
`
`FIG. 5 is a schematic cross-sectional diagram of a
`display device in another embodiment of the present
`disclosure.
`
`FIG. 6 is a schematic cross-sectional diagram of a
`display device in another embodiment of the present
`disclosure.
`
`FIG. 7 is a schematic cross-sectional diagram of a
`display device in another embodiment of the present
`disclosure.
`
`FIG. 8 is a schematic cross-sectional diagram of a
`display device in yet another embodiment of the
`presentdisclosure.
`FIG. 9 is a schematic cross-sectional diagram of a
`display device in yet another embodiment of the
`presentdisclosure.
`
`DESCRIPTION OF THE EMBODIMENTS
`
`Some words are usedto refer to specific com-
`[0007]
`ponents in the whole specification and the appended
`claims in the present disclosure. A person skilled in the
`art should understand that an electronic device manu-
`
`facturer may use different names to refer to the same
`components. This specification is not intended to distin-
`guish components that have the same functions butdif-
`ferent names. In this specification and the claims, words
`such as "include", "comprise", and “have" are open
`words, and should be interpreted as "including, but not
`limited to". Therefore, when terms "include", "comprise",
`and/or "have" are used in the description of the present
`disclosure, the presence of corresponding features, re-
`gions, steps, operations and/or componentsis specified
`without excluding the presenceof one or moreother fea-
`tures, regions, steps, operations and/or components.
`[0008] The directional terms mentioned herein, such
`as "above", "below", "front", "back", "left", and "right", re-
`fer to the directions in the accompanying drawings.
`Therefore, the directional terms are only used for illus-
`tration instead oflimiting the present disclosure.
`In the
`accompanying drawings, common features of a method,
`a structure and/or a material used in a specific embodi-
`ment are shown in the drawings. However, these draw-
`ings should not be construed as defining or limiting the
`scope or nature of these embodiments. For example, the
`relative sizes, thicknesses and positions offilms, regions
`and/or structures may be reducedor enlargedfor clarity.
`[0009]
`Itshould be understood that, when a component
`or a film is referred to as being "connected to" another
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`componentor film, it may be directly connected to another
`componentor film, or there are componentsor films in-
`serted between the two components or films. When a
`componentor a film is referred to as being "directly con-
`nected to" another componentor film, there is no com-
`ponentor film inserted between the two components or
`films.
`In addition, when a componentis referred to as
`being "coupled to another component(or a variant there-
`of)", it may be directly connected to another component,
`or may be indirectly connected to (for example, electri-
`cally connected to) the another component through one
`or more components.
`[0010] Theterm"approximately", “equalto", "the same
`as", "substantially" or "roughly" is generally interpreted
`as being within 20% of a given value or range, or inter-
`preted as being within 10%, 5%, 3%, 2%, 1% or 0.5% of
`a given value or range.
`[0011] Astructure (orlayer, component, substrate) be-
`ing located on another structure (or layer, component,
`substrate) described in the present disclosure may mean
`that two structures are adjacent and directly connected,
`or may mean that two structures are adjacent andindi-
`rectly connected. Indirect connection means that there
`is atleast one intermediate structure (or intermediate lay-
`er, intermediate component, intermediate substrate, in-
`termediate spacing) between two structures, the lower
`surface of a structure is adjacent or directly connected
`to the upper surface of the intermediate structure, and
`the upper surface of the other structure is adjacent or
`directly connected to the lower surface of the intermedi-
`ate structure. The intermediate structure may be a single-
`layer or multi-layer physical structure or non-physical
`structure, whichis not limited. In the present disclosure,
`when a structureis on or disposed "on" another structure,
`it may mean that a structure is "directly" disposed on
`another structure, or a structure is "indirectly" disposed
`on another structure, that is, at least one structure is
`sandwiched between a structure and another structure.
`
`[0012] Theterms such as "first", "second", and the like
`in this specification may be used for describing various
`elements, components, areas, layers, and/or parts, but
`the elements, components, areas, layers, and/or parts
`are not limited by such terms. The terms are only used
`to distinguish one element, component, area, layer, or
`part from another element, component, area, layer, or
`part. Therefore, a "first component", "first element", “first
`region", "firstlayer", or "first part" discussed below is used
`to distinguish it from a “second component", "second el-
`ement", “second region", “second layer", or "second
`part", and is not used to define an order or a specific
`component, element, region, layer and/or part.
`[0013]
`Inthe present disclosure, various embodiments
`described below may be usedin any combination without
`departing from the spirit and scope of the present disclo-
`sure, for example, some features of one embodiment
`may be combined with some features of another embod-
`iment to form another embodiment.
`
`[0014] An electronic device of the present disclosure
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`may include a display device, an antenna device, a sens-
`ing device, a splicing device or a transparent display de-
`vice, but is not limited thereto. The electronic device may
`be rollable, stretchable, bendable or flexible. The elec-
`tronic device may include, for example, a liquid crystal,
`a light emitting diode (LED), a quantum dot (QD), fluo-
`rescence, phosphor or other suitable materials that are
`capable of being arranged and combinedat will, or other
`suitable display media, or a combination of the above.
`The LED may include, for example, an organic light emit-
`ting diode (OLED), a mini light emitting diode (mini LED),
`a micro light emitting diode (micro LED) or a quantum
`dot (QD) light emitting diode (such as a QLED and a
`QDLED), butis notlimited thereto. The antenna device
`may be, for example, a liquid crystal antenna, but is not
`limited thereto. The splicing device may be, for example,
`a display splicing device or an antenna splicing device,
`but is not limited thereto. It should be noted that the elec-
`
`tronic device may be any combination of the abovear-
`rangements, butis not limited thereto. The content of the
`presentdisclosure will be described by using the display
`device or splicing device as the electronic device below,
`but the present disclosureis not limited thereto.
`[0015]
`Inthe present disclosure, various embodiments
`described below may be usedin any combination without
`departing from the spirit and scope of the present disclo-
`sure, for example, some features of one embodiment
`may be combined with some features of another embod-
`iment to form another embodiment.
`
`[0016] Exemplary embodiments of the present disclo-
`sure are described in detail, and examples of the exem-
`plary embodiments are shown in the accompanying
`drawings. Whenever possible,
`the same component
`symbols are used in the drawings and descriptions to
`indicate the same or similar parts.
`[0017]
`FIG. 1 isaschematic top view diagram of a dis-
`play device in an embodimentof the present disclosure.
`For the sake of clear drawings and convenient explana-
`tion, a plurality of elements are omitted in FIG. 1. FIG. 2
`is aschematic cross-sectional diagram of the display de-
`vice in FIG. 1 along a cross-sectional line A-A’. For the
`sake of clear drawings and convenient explanation, a
`plurality of elements are omitted in FIG. 2. Referring to
`FIG.
`1 and FIG. 2, the display device 10 of the present
`disclosure includesa first unit 100 and a plurality of sec-
`ond units 200. The plurality of second units 200 are dis-
`posed on the first unit 100. In the present embodiment,
`the first unit 100 includes, for example, a cover plate or
`a color filter substrate. Each one of the second units 200
`
`includes, for example, a display panel. Under the above
`configurations, since the first unit 100 and the second
`units 200 may be manufactured respectively and then
`the plurality of second units 200 are disposed and spliced
`directly on the first unit 100, a manufacturing process of
`the display device 10 may be simplified, or the manufac-
`turing cost may be reduced. In addition, since a plurality
`of display panels (the second units 200) may be directly
`disposed on one cover plate and/or one color filter sub-
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`strate (Such as the first unit 100), a frame size of the
`display panels may be reduced. Thus, the display device
`10 may achieve a visual effect of seamless splicing or
`have good display quality.
`[0018] A splicing method of the present embodiment
`will be explained simply through FIG. 1 and FIG. 2. First,
`the first unit 100 is provided. As shown in FIG. 2, the first
`unit 100 includesa first substrate 110 and a light blocking
`structure 120 disposed on the first substrate 110. The
`light blocking structure 120 has a plurality of first openings
`122. In the present embodiment, the first substrate 110
`includes, for example, a rigid substrate or a flexible sub-
`strate. For example, a material of the first substrate 110
`may include glass, quartz, sapphire, ceramic, polycar-
`bonate (PC), polyimide (PI), polyethylene terephthalate
`(PET), other suitable substrate materials, or a combina-
`tion ofthe above, butis not limited thereto. The light block-
`ing structure 120 is, for example, a black matrix with a
`light blocking effect and low reflection characteristics. For
`example, a material of the light blocking structure 120
`may include a metal or a tinted opaque resin, or other
`suitable materials, or a combination of the above mate-
`rials, but is not limited thereto. The metal may be, for
`example, chromium (Cr), but is not limited thereto. The
`resin may be, for example, an epoxy resin or an acrylic
`resin, or other suitable materials, or a combination of the
`above materials, but is not limited thereto.
`[0019] Next, the plurality of second units 200 are pro-
`vided. Each one of the plurality of second units 200 in-
`cludes a second substrate 210 and a plurality of LEDs
`260 disposed on the second substrate 210. The second
`substrate 210 includes, for example, a rigid substrate or
`a flexible substrate. Forexample, a material ofthe second
`substrate 210 may include glass, quartz, sapphire, ce-
`ramic, polycarbonate (PC), polyimide (Pl), polyethylene
`terephthalate (PET}, other suitable substrate materials,
`or a combination of the above, but is not limited thereto.
`The LEDs 260 include, forexample, red LEDs 261, green
`LEDs 262 and blue LEDs 263, but are limited thereto.
`From another perspective, the LEDs 260 maybe in red,
`blue and green colors. That is to say, the second units
`200 ofthe present embodimentinclude, for example, dis-
`play panels with functions of displaying images, but the
`present disclosure is not limited thereto.
`[0020] Then, an optical adhesive layer 300 is disposed
`between the first unit 100 and the second units 200. For
`
`example, the optical adhesive layer 300 may be disposed
`on the first unit 100, or, in another embodiment, the op-
`tical adhesive layer 300 may also be disposed on the
`second units 200. Because the optical adhesive layer
`300 is disposed between the first unit 100 and the second
`units 200, the second units 200 may be attached or fixed
`to the first unit 100. A material of the optical adhesive
`layer 300 may be an optical clear adhesive (OCA) with
`viscosity, an optical clear resin (OCR) or other suitable
`materials, or a combination of the above materials, but
`is not limited thereto. When the optical adhesive layer
`300 is made of the OCR, its viscosity, for example, is in
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`a range of 10 mPass to 100 mPass, but the presentdis-
`closure is not limited thereto.
`
`In some embodiments, the display device 10
`[0021]
`further includes a dam. The dam (not shown) may be
`disposed on the first unit 100 or the second units 200.
`The dam may surround an edge ofthe first unit 100. Or,
`the dam may surround edgesof the second units 200.
`In the above configurations, the optical adhesive layer
`300 may be fixed between the first unit 100 and the sec-
`ond units 200 through the surrounding of the dam, and
`the optical adhesive layer 300 is not easy to overflow. A
`material of the dam includes an adhesive material with
`
`high viscosity or other suitable materials, but is not limited
`thereto. When the dam is disposed on the second units
`200, the material of the dam maybe a transparent ad-
`hesive material with high transparency, butis not limited
`thereto. Thus, the display device 10 may have gooddis-
`play quality.
`[0022] Next, as shown in FIG. 1, the plurality of second
`units 200 may be arrangedin directions of an X-axis and
`a Y-axis so as to be spliced on the first unit 100. For
`example, on the X-axis, a second unit 201 and a second
`unit 202 may be spliced adjacently on the first unit 100.
`In the present disclosure, the X-axis may be in the top
`view direction of the display device 10 and extends from
`left to right. The Y-axis is perpendicular to the X-axis, and
`extends from top to bottom in the top view direction of
`the display device 10.
`[0023] As shown in FIG. 1, for example, the display
`device 10 is a display device 10 with 4x4 display panels
`which are formed by splicing four second units 200
`spliced on the X-axis and four second units 200 spliced
`on the Y-axis, but the present disclosure is not limited
`thereto. In some embodiments, the display device may
`also be a spliced display device with 3x3, 5x5 or other
`combinations.
`
`In the present disclosure, according to users’
`[0024]
`design and requirements, a gap GP may be formed be-
`tween the second unit 201 and the second unit 202. There
`
`may be agap GP between any twoofthe adjacent second
`units 200. The gap GP may also be referred to as a Splic-
`ing line.
`It should be noted here that the display device
`[0025]
`10 of the present embodiment includes, for example,
`alignment between the first unit 100 and the second units
`200 by means of penetrating alignment or image identi-
`fication alignment. Inthe means of penetrating alignment,
`alignment marks AM may be formed on two opposite
`sides of the first unit 100 and two opposite sides of the
`secondunits 200 by laser for example, then the alignment
`marks AM on the first unit 100 and the alignment marks
`AM on the secondunits 200 are aligned correspondingly,
`so that the corresponding alignment marks AM are over-
`lappedto achievethe alignment. As shown in FIG. 1, the
`alignment marks AM may be disposedat four corners of
`the edge ofthe first unit 100 (not shown, the first unit 100
`overlaps a plurality of spliced second units 200) or any
`positions in the first unit 100.
`In addition, the alignment
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`marks AM may be disposedat four corners of the edge
`of each one of the second units 200, or any positions in
`the second units 200, but the present disclosure is not
`limited thereto. It should be noted that part of the align-
`ment marks AM may overlap a display area of the display
`device 10. However, the alignment marks AM on the first
`unit 100 observed by a user may be manufactured on
`the light blocking structure 120. In this way, the influence
`of the alignment marks AM on the display quality may be
`reduced.
`
`Inthe meansof image identification alignment,
`[0026]
`an image identification system may identify surface fea-
`tures on the first unit 100 through a camera, and then the
`second units 200 are disposed on the corresponding po-
`sitions on the first unit 100 according to the identified
`surface features to achieve the alignment. Thus, the first
`unit 100 and the second units 200 may achieve an ex-
`cellent alignment effect by penetrating alignment or im-
`age identification alignment. In this way, the second units
`200 may be spliced on the first unit 100 to obtain the
`display device 10 with good quality.
`[0027] A configuration of the display device 10 of the
`present embodiment will be explained simply through
`FIG.
`1 and FIG. 2.
`
`[0028] Referring to FIG. 2, FIG. 2 shows a schematic
`cross-sectional diagram of two second units 200 spliced
`on the first unit 100. In the present embodiment, the first
`unit 100 includes the first substrate 110 and the light
`blocking structure 120 disposed on the first substrate
`110. The light blocking structure 120 is provided with the
`plurality of first openings 122. That is to say, the first unit
`100 may include a plurality of black matrixes, but the
`present disclosure is not limited thereto.
`[0029] The second units 200 include the second unit
`201 and the second unit 202. The second unit 201 and
`
`the second unit 202 are disposed on the first unit 100
`after alignment. The gap GP is formed between the sec-
`ond unit 201 and the second unit 202.
`In the present
`embodiment, in the X-axis direction, the width of the gap
`GP may be determined according to the user’s design
`and requirements, for example, O.m to 200um, but is
`not limited thereto.
`
`Inthe present embodiment, each one of the sec-
`[0030]
`ond units 200 is further provided with an another bank
`layer 240. The another bank layer 240 is disposed on the
`second substrate 210. For example, a material of the
`another bank layer 240 may include an acrylic resin, si-
`loxane, a photoresist material or other suitable materials,
`ora combination of the above materials, but is not limited
`thereto. The another bank layer 240 is provided with a
`plurality of fourth openings 242.
`[0031] The plurality of LEDs 260 are disposed in the
`plurality of fourth openings 242 respectively. For exam-
`ple, the red LEDs 261, the green LEDs 262 and the blue
`LEDs 263 may be disposed in the corresponding fourth
`openings 242 respectively. The plurality of fourth open-
`ings 242 correspond to the plurality of first openings 122
`respectively. Thus, the LEDs 260 in the fourth openings
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`242 may correspond to a portion of the first openings
`122. Thatis to say, the plurality of LEDs 260 are disposed
`corresponding to a portion of the plurality of first openings
`122.
`
`Forexample, ina Z-axis direction perpendicular
`[0032]
`to the first unit 100, the LEDs 260 may correspondingly
`overlap 20% to 100%of the first openings 122, and have
`a tolerance of '10%, such as 20%110%, 40% 110%,
`60%+10 %, 80%+10 % or 100%, but are not limited
`thereto. In this way, light emitted by the LEDs 260 may
`pass through the first openings 122 and penetrate
`through the first unit 100.
`[0033]
`Inthe present embodiment, a width W1 of the
`first openings 122 and a width W4of the fourth openings
`242 may be the same or different. For example, the width
`W1 may be greater or equal to the width W4, but is not
`limited thereto. In some embodiments, the width W1 may
`also be less than the width W4. In the present disclosure,
`the width W1 may be defined as a maximum width of the
`first openings 122 on the X-axis, wherein an example
`measurement method of the width W1 is as measuring
`distances of two sides on the X-axis in the first openings
`122 of the light blocking structure 120 in the example
`cross-sectional direction inthe present embodiment. The
`width W4 may be defined as a maximum width of the
`fourth openings 242 on the X-axis, wherein an example
`measurement method of the width W4 is as measuring
`distances oftwosides onthe X-axis in the fourth openings
`242 of the another bank layer 240 in the example cross-
`sectional direction in the present embodiment.
`In the
`present disclosure, the X-axis is parallel to an extension
`direction of the first unit 100, and is perpendicular to the
`Z-axis.
`In the above configurations, the portion of the
`LEDs 260 correspondingly overlapping the first openings
`122 maybelifted to achieve good display quality.
`[0034]
`In the present embodiment, the optical adhe-
`sive layer 300 of the display device 10 is disposed be-
`tween the first unit 100 and the second unit 201. The
`
`optical adhesive layer 300 is disposed between the first
`unit 100 and the second unit 202. The optical adhesive
`layer 300 may be partially located in the gap GP between
`the second unit 201 and the second unit 202, but the
`presentdisclosure is not limited thereto. In addition, the
`optical adhesive layer 300 may be disposedin the first
`openings 122 to increase a contact area or improve a
`bonding force. In this way, the display device 10 has good
`reliability.
`It is worth noting that in the present embodi-
`[0035]
`ment, a portion of the light blocking structure 120 corre-
`sponds to the gap GP between any two second units
`200. For example, on the Z-axis, the portion of the light
`blocking structure 120 corresponding to the gap GP may
`overlap the gap GP between the second unit 201 and
`the second unit 202. That is to say, on the X-axis, the
`width of the portion of the light blocking structure 120
`corresponding to the gap GP may be greater than or
`equal to the width of the gap GP, but the present embod-
`imentis not limited thereto. Thus, whenthe user observes
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`the first unit 100, the portion ofthe light blocking structure
`120 may block the gap GP (also known as the splicing
`line) between two adjacent second units 200. In this way,
`the splicing line between the two adjacent second units
`200 is not easily observed bythe user, and thus the visual
`effect of seamless splicing may be achieved. Therefore,
`the display device 10 may have gooddisplay quality or
`visual effect.
`
`[0036] Other embodiments will be cited below as an
`explanation. It must be noted herethat the following em-
`bodiments follow the element reference numbers and
`
`parts of contents of the above embodiments, wherein
`same reference numbers are adopted to represent the
`same orsimilar elements, and the description ofthe same
`technical content is omitted. The description of the omit-
`ted part may makereference to the above embodiments,
`and will not be repeated in the following embodiments.
`[0037]
`FIG. 3 is a schematic cross-sectional diagram
`of a display device in another embodimentof the present
`disclosure. A display device 10A of the present embod-
`iment is substantially similar to the display device 10 in
`FIG. 2, and thus the same and similar componentsin the
`two embodiments are omitted herein. The present em-
`bodimentis different from the display device 10 in that a
`first unit 100A of the display device 10A includes a bank
`layer 140 disposed on the light blocking structure 120.
`In addition, the optical adhesive layer 300 is located be-
`tween the bank layer 140 and the another bank layer
`240. In the present embodiment, the bank layer 140 may
`include a material with a reflective effect, such as an
`acrylic resin mixed with titanium dioxide (TiO>) orthe TiO,
`and carbon black, siloxane, a photoresist material or oth-
`er suitable materials or a combination of the above, but
`the present disclosureis notlimited thereto.
`[0038] The bank layer 140 has a plurality of second
`openings 142. The second openings 142 corresponding-
`ly overlap a portion of the plurality of first openings 122
`of the light blocking structure 120 respectively. Thus, the
`portion of the second openings 142 corresponds to the
`LEDs 260 in the fourth openings 242. In the present em-
`bodiment, a width W2 of the second openings 142 and
`the width W1 of the first openings 122 may be the same
`or different, but the present embodimentis not limited
`thereto. In the present embodiment, the width W2 may
`be greater than or equal to the width W4, but is not limited
`thereto. In the present disclosure, the width W2 may be
`defined as a maximum width of the second openings 142
`onthe X-axis, wherein an example measurement method
`of the width W2 is as measuring distances of two sides
`on the X-axis in the second openings 142 of the bank
`layer 140 in the example cross-sectional direction in the
`present embodiment.
`[0039] A scattering layer 150 is disposed in at least
`one of the plurality of second openings 142. In addition,
`the scattering layer 150 is disposedin the first openings
`122 corresponding to the second openings 142. Thus,
`one of the LEDs 260 (such as the red LED 261, the green
`LED 262 or the blue LED 263) may be disposed corre-
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`sponding to the scattering layer 150. In the present em-
`bodiment, a material of the scattering layer 150 may in-
`clude aresin layer containing a light scattering agent such
`as microparticles for scattering light, or other suitable ma-
`terials, or a combination of the above materials, but is
`not limited thereto.
`In this way, the light emitted by the
`LEDs 260 may be scattered or diffused by the scattering
`layer 150, and thus the light amount of visible light is
`increased. Thus, the display device 10A may have good
`display quality or display effect.
`[0040]
`In addition, since the scattering layer 150 is dis-
`posedin the second openings 142 of the bank layer 140,
`the light emitted by the LEDs 260 may bereflected to
`improvethe utilization ofthe light. Or, the bank layer 140
`may limit a traveling direction of the light, and reduce the
`probability of mixing light. In addition, since the scattering
`layer 150 is disposedin the first openings 122 of the light
`blocking structure 120, a light emitting direction of the
`LEDs 260 or a viewing angle of the display device 10A
`may be increased.
`In this way, the display device 10A
`may have gooddisplay quality or display effect. In addi-
`tion, the display device 10A may obtain an excellent tech-
`nical effect similar to the above embodiment.
`
`FIG. 4 is a schematic cross-sectional diagram
`[0041]
`of a display device in another embodiment of the present
`disclosure. A display device 10B of the present embod-
`iment is substantially similar to the display device 10A in
`FIG. 3, and thus the same and similar componentsin the
`two embodiments are omitted herein. The present em-
`bodiment is different from the display device 10A in that
`a first unit 100B of the display device 10B includes an
`another light blocking structure 160 disposed on the bank
`layer 140. The bank layer 140 is disposed between the
`light blocking structure 120 and the another light blocking
`structure 160. A material of the another light blocking
`structure 160 is similarto the material of the light blocking
`structure 120, for example, a black matrix with a light
`blocking effect and low reflection characteristics, or other
`suitable materials or a combination of the above, but is
`not limited thereto, and thus it will not be repeated.
`[0042]
`In the present embodiment, the another light
`blocking structure 160 is provided with a plurality of fifth
`openings 162. The fifth openings 162 are disposed cor-
`responding to a portion of the second openings 142.
`In
`addition, the fifth openings 162 are disposed correspond-
`ing to a portion ofthe first openings 122.
`[0043]
`Inthe present embodiment, second units 200B
`(including a second unit 201B and a second unit 202B)
`and the plurality of LEDs 260 are disposed onthe second
`substrate 210 and correspond to a portion of the fifth
`openings 162, the second openings 142 and the first
`openings 122, and thus the LEDs 260 maybe corre-
`spondingly located in the fifth openings 162 or the fifth
`openings 162 and the second openings 142, but are not
`limited thereto.
`In some embodiments, top surfaces of
`the LEDs 260 away from the second substrate 210 may
`be located in the second openings 142. In other embod-
`iments, the top surfaces of the LEDs 260 away from the
`
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`second substrate 210 may be aligned with a contact in-
`terface of the bank layer 140 and the light blocking struc-
`ture 120, but are not limited thereto. In this way, the uti-
`lization of light may be improved, or the probability of
`mixing light may be reduced. The display device 10B may
`have good display quality or display effect.
`[0044]
`In the present embodiment, the optical adhe-
`sive layer 300 may be locatedin the fifth openings 16