(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2009/0002337 A1
`Chang
`(43) Pub. Date:
`Jan. 1, 2009
`
`US 200900O2337A1
`
`(54) CAPACITIVE-TYPE TOUCH PANEL
`
`Publication Classification
`
`- -
`
`- -
`
`-
`
`-
`
`Yu-Huei Chang, Sijhih City (TW)
`(75) Inventor:
`Add
`d
`C
`orrespondence
`CSS
`Shirley L. Church, Esq.
`P.O. Box 81.146
`San Diego, CA 92.138 (US)
`
`(73) Assignee:
`
`Sense Pad Tech Co., LTD
`
`(21) Appl. No.:
`
`12/152,714
`
`(22) Filed:
`
`May 16, 2008
`
`(30)
`
`Foreign Application Priority Data
`
`Jun. 28, 2007 (TW) ................................. O961.23484
`
`
`
`(51) Int. Cl.
`
`(2006.01)
`G06F 3/045
`(52) U.S. Cl. ........................................................ 345/174
`(57)
`ABSTRACT
`A capacitive-type touch panel includes: a transparent Sub
`strate; a plurality of first conductors; a plurality of second
`conductors cooperating with the first conductors to form a
`matrix of capacitive regions; and a controller connected elec
`trically to the first and second conductors for detecting the
`capacitance of each of the capacitive regions. Each of the first
`E. is intersected E divided is the second conduc
`tors into a series of first electrode sections. Each of the second
`conductors is intersected and divided by the first conductors
`into a series of second electrode sections. Each of the first and
`second electrode sections of the first and second conductors
`has a fine conductor line-constructed structure which is con
`structed from a fine line-shaped conductor.
`
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 1 of 17
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`US 2009/0002337 A1
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`Patent Application Publication
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 3 of 17
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 4 of 17
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`31
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`CONTROLLER
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`70
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`FIG. 4
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 5 of 17
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 7 0f 17
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`US 2009/0002337 Al
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 8 of 17
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 9 of 17
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`US 2009/0002337 A1
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 10 of 17
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`US 2009/0002337 A1
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 11 of 17
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`US 2009/0002337 A1
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 12 of 17
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 13 of 17
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`US 2009/0002337 A1
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`CONTROLLER
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`70
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`FIG. 13
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 14 of 17
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`Patent Application Publication
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`Patent Application Publication
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`Patent Application Publication
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`Jan. 1, 2009 Sheet 17 of 17
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`US 2009/0002337 A1
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`Jan. 1, 2009
`
`CAPACITIVE-TYPE TOUCH PANEL
`
`CROSS-REFERENCE TO RELATED
`APPLICATION
`0001. This application claims priority of Taiwanese Appli
`cation No. 09.6123484, filed on Jun. 28, 2007.
`
`BACKGROUND OF THE INVENTION
`0002 1. Field of the Invention
`0003. This invention relates to a capacitive-type touch
`panel, more particularly to a capacitive-type touch panel
`including first and second conductors having sections, each
`having a fine conductor line-constructed structure.
`0004 2. Description of the Related Art
`0005 FIG. 1 illustrates a conventional capacitive-type
`touch panel that includes a transparent substrate 11, a first
`electrode unit 12 formed on a top surface of the transparent
`substrate 11, a second electrode unit 13 formed on a bottom
`surface of the transparent substrate 11, a conductive first
`connecting line unit 15 connected to the first electrode unit
`12, a conductive second connecting line unit 16 connected to
`the second electrode unit 13, and a controller 14 connected to
`the first and second connecting line units 15, 16.
`0006 FIG. 2 illustrates another conventional capacitive
`type touch panel that includes a transparent substrate 21, a
`first electrode unit 22 formed on a top surface of the transpar
`ent substrate 21, an insulator layer 24 disposed on the first
`electrode unit 22, and a second electrode unit 23 formed on a
`top surface of the insulator layer 24.
`0007. When the aforesaid conventional capacitive-type
`touch panels are activated, an electric field distribution is
`generated between the first and second electrode units 12, 13
`(22. 23). At this time, when the user operably touches the
`capacitive-type touch panel at one location, the electric field
`at the location is changed, which results in a change in the
`capacitance between the first and second electrode units 12.
`13 (22.23) at the location, thereby permitting identification of
`the coordinates of the location through the controller 14.
`0008 Since the first and second electrode units 12, 13 (22.
`23) of the aforesaid conventional capacitive-type touch pan
`els are made from a transparent conductive material, such as
`indium tin oxide (ITO), which has a much higher sheet resis
`tance compared to those of metals, such as Cu, Ag and Au, the
`sheet resistance of the conventional capacitive-type touch
`panels will be larger than 1 KS2/square and the capacitance of
`the conventional capacitive-type touch panels from one
`peripheral end to an opposite peripheral end will be larger
`than 400 pF (pico-farad) when the capacitive-type touch
`panel has dimensions larger than 7x7 inches, which can result
`in relatively poor identification of coordinates of a location
`touched by the user, which, in turn, limits production of larger
`sizes of the capacitive-type touch panels.
`
`SUMMARY OF THE INVENTION
`0009. An object of the present invention is to provide a
`capacitive-type touch panel that can overcome the aforesaid
`drawbacks associated with the prior art.
`(0010. According to this invention, there is provided a
`capacitive-type touchpanel that comprises: a transparent Sub
`strate; a plurality of first conductors disposed on the transpar
`ent substrate; a plurality of second conductors disposed on the
`transparent substrate, intersecting insulatively with the first
`conductors, and cooperating with the first conductors to form
`
`a matrix of capacitive regions when a current is applied to the
`first and second conductors; and a controller connected elec
`trically to the first and second conductors for detecting the
`capacitance of each of the capacitive regions. Each of the first
`conductors is intersected and divided by the second conduc
`tors into a series of first electrode sections. Each of the second
`conductors is intersected and divided by the first conductors
`into a series of second electrode sections. Each of the first and
`second electrode sections of the first and second conductors
`has a fine conductor line-constructed structure which is con
`structed from a fine line-shaped conductor.
`
`BRIEF DESCRIPTION OF THE DRAWING
`0011. Other features and advantages of the present inven
`tion will become apparent in the following detailed descrip
`tion of the preferred embodiments of this invention, with
`reference to the accompanying drawings, in which:
`0012 FIG. 1 is a fragmentary schematic view of a conven
`tional capacitive-type touch panel;
`0013 FIG. 2 is a partly exploded schematic view of
`another conventional capacitive-type touch panel;
`0014 FIG. 3 is a cutaway perspective view of the first
`preferred embodiment of a capacitive-type touch panel for
`mounting to a display according to this invention;
`0.015
`FIG. 4 is a fragmentary schematic view of the first
`preferred embodiment according to this invention;
`0016 FIG. 5 is a fragmentary perspective view of the first
`preferred embodiment;
`0017 FIG. 6 is a fragmentary perspective view of the
`second preferred embodiment of the capacitive-type touch
`panel according to this invention:
`0018 FIG. 7 is a fragmentary schematic view of the third
`preferred embodiment of the capacitive-type touch panel
`according to this invention;
`0.019
`FIG. 8 is a fragmentary perspective view of the third
`preferred embodiment;
`0020 FIG.9 is a fragmentary schematic view of the fourth
`preferred embodiment of the capacitive-type touch panel
`according to this invention;
`0021
`FIG. 10 is a fragmentary perspective view of the
`fourth preferred embodiment;
`0022 FIG. 11 is a fragmentary sectional view taken along
`line XI-XI of FIG.9;
`0023 FIG. 12 is a fragmentary perspective view of the
`fifth preferred embodiment of the capacitive-type touchpanel
`according to this invention;
`0024 FIG. 13 is a fragmentary schematic view of the sixth
`preferred embodiment of the capacitive-type touch panel
`according to this invention;
`0025 FIG. 14 is a fragmentary partly sectional cutaway
`perspective view of the sixth preferred embodiment;
`0026 FIG. 15 is a fragmentary sectional view of the sixth
`preferred embodiment;
`0027 FIG. 16 is a fragmentary, exploded perspective view
`of the seventh preferred embodiment of the capacitive-type
`touch panel according to this invention; and
`0028 FIG. 17 is a fragmentary, exploded perspective view
`of the eighth preferred embodiment of the capacitive-type
`touch panel according to this invention.
`DETAILED DESCRIPTION OF THE PREFERRED
`EMBODIMENTS
`0029 FIGS.3 to 5 illustrate the first preferred embodiment
`of a capacitive-type touch panel for a liquid crystal display 80
`
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`Jan. 1, 2009
`
`according to this invention. The capacitive-type touch panel
`includes: a transparent Substrate 3; a plurality of first conduc
`tors 41 disposed on the transparent substrate 3 and oriented in
`a first direction; a plurality of second conductors 42 disposed
`on the transparent Substrate 3, oriented in a second direction
`transverse to the first direction, intersecting insulatively with
`the first conductors 41, and cooperating with the first conduc
`tors 41 to form a matrix of capacitive regions 4 when a current
`is applied to the first and second conductors 41, 42; and a
`controller 70 connected electrically to the first and second
`conductors 41,42 through conductive connecting lines 61, 62
`for detecting the capacitance of each of the capacitive regions
`4. Each of the first conductors 41 is intersected and divided by
`the second conductors 42 into a series of first electrode sec
`tions 411. Each of the second conductors 42 is intersected and
`divided by the first conductors 41 into a series of second
`electrode sections 421. Each of the first and second electrode
`sections 411,421 of the first and second conductors 41, 42 has
`a fine conductor line-constructed structure which is con
`structed from a fine line-shaped conductor having a dimen
`sion that permits the fine line-shaped conductor to be substan
`tially not visible to the naked eye. Preferably, the fine line
`shaped conductor has a layer thickness less than 250
`angstroms, and more preferably, ranging from 10-50 ang
`stroms so as to be transparent, or has a line width less than 200
`microns so as to be substantially not visible to the naked eye.
`Preferably, the fine line-shaped conductor is made from a
`metallic material selected from the group consisting of Cu,
`Al, Au, Ag, Ni, Cr, Mo, and combinations thereof. Formation
`of the first and second conductors 41, 42 can be conducted
`using vapor deposition techniques. It is noted that the fine
`line-shaped conductor can be linear, curved or meandering in
`shape.
`0030. In this embodiment, each of the first and second
`electrode sections 411,421 of the first and second conductors
`41, 42 has a main part 413, 423 (see FIG. 5) that is linear in
`shape, and two opposite bridging parts 417 (427) extending
`from two opposite ends of the main part 413, 423 in opposite
`directions. Each of the bridging parts 417 of each of the first
`electrode sections 411 is connected to and cooperates with an
`adjacent one of the bridging parts 417 of an adjacent one of
`the first electrode sections 411 to define a first bridging line
`415. Each of the bridging parts 427 of each of the second
`electrode sections 421 is connected to and cooperates with an
`adjacent one of the bridging parts 427 of an adjacent one of
`the second electrode sections 421 to define a second bridging
`line 425. The capacitive type touch panel further includes a
`plurality of spaced apart insulators 5, each of which is dis
`posed at an intersection of the first bridging line 415 inter
`connecting the main parts 413 of an adjacent pair of the first
`electrode sections 411 and the second bridging line 425 inter
`connecting the main parts 423 of an adjacent pair of the
`second electrode sections 421, and each of which is sand
`wiched between the first bridging line 415 interconnecting
`the main parts 413 of the adjacent pair of the first electrode
`sections 411 and the second bridging line 425 interconnecting
`the main parts 423 of the adjacent pair of the second electrode
`sections 421.
`0031. In this embodiment, the transparent substrate 3 has
`opposite first and second surfaces 31, 32, and the first and
`second conductors 41, 42 are formed on the first surface 31 of
`the transparent substrate 3.
`0032 Preferably, the transparent substrate 3 is made from
`a material selected from the group consisting of glass, poly
`
`methylmethacrylate, polyvinylchloride, polypropylene,
`polyethylene terephthalate, polyethylene naphthalate, poly
`carbonate, and combinations thereof.
`0033 Preferably, each of the insulators 5 is made from a
`material selected from the group consisting of photoresist,
`silicon dioxide, titanium dioxide, Zinc oxide, silicon nitride,
`aluminum nitride, tantalum oxide, and combinations thereof.
`0034 FIG. 6 illustrates the second preferred embodiment
`of the capacitive-type touch panel according to this invention.
`The second preferred embodiment differs from the previous
`embodiment in that the main part 413, 423 of the fine con
`ductor line-constructed structure of each of the first and sec
`ond electrode sections 411, 421 of the first and second con
`ductors 41, 42 includes a linear stem portion 4131, 4231 and
`spaced apart linear branch portions 4132,4232 transverse to
`the linear stem portion 4131, 4231.
`0035 FIGS. 7 and 8 illustrate the third preferred embodi
`ment of the capacitive-type touch panel according to this
`invention. The third preferred embodiment differs from the
`previous embodiments in that the main part 413, 423 of the
`fine conductor line-constructed structure of each of the first
`and second electrode sections 411,421 of the first and second
`conductors 41, 42 is rectangular in shape.
`0036 FIGS.9 to 11 illustrate the fourth preferred embodi
`ment of the capacitive-type touch panel according to this
`invention. The fourth preferred embodiment differs from the
`third preferred embodiment in that the main part 413, 423 of
`the fine conductor line-constructed structure of each of the
`first and second electrode sections 411, 421 of the first and
`second conductors 41, 42 has a screen-like shape. In this
`embodiment, the main part 413, 423 of the fine conductor
`line-constructed structure of each of the first and second
`electrode sections 411,421 of the first and second conductors
`41, 42 has a plurality of intersected weft and warp metal lines
`4131, 4132 (4231, 4232). The capacitive-type touch panel of
`this invention further includes an anti-reflective layer 72 dis
`posed on the first and second conductors 41, 42 (in this
`embodiment, it is formed directly on the first and second
`conductors 41, 42), a protective layer 71 disposed on the
`anti-reflective layer 72 (in this embodiment, it is formed
`directly on the anti-reflective layer 72), and a conductive layer
`73 disposed on the second surface 32 of the transparent sub
`strate 3 (in this embodiment, it is formed directly on the
`second surface 32 of the transparent substrate 3) and func
`tioned as one of a grounding medium and an electromagneti
`cally shielding medium. The conductive layer 73 is preferably
`made from a transparent conductive material. The screen-like
`structure permits enhancement in reduction of the sheet resis
`tance of the capacitive-type touch panel. The protective layer
`71 is preferably made from a material selected from the group
`consisting of adhesive, resin, photoresist, oxides, nitrides,
`and combinations thereof.
`0037 FIG. 12 illustrates the fifth preferred embodiment of
`the capacitive-type touch panel according to this invention.
`The fifth preferred embodiment differs from the fourth pre
`ferred embodiment in that the screen-like main part 413, 423
`of the fine conductor line-constructed structure of each of the
`first and second electrode sections 411, 421 of the first and
`second conductors 41, 42 defines a plurality of holes 4130.
`4230, each of which is filled with a transparent conductive
`material 416, 426. Preferably, the transparent conductive
`material 416, 426 is selected from the group consisting of
`indium-tin-oxide, indium-zinc-oxide, Zinc oxide, aluminum
`Zinc oxide, and combinations thereof. Inclusion of the trans
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`
`parent conductive material 416, 426 in the first and second
`conductors 41, 42 can enhance conductivities of the first and
`second conductors 41, 42 and increase sensing area so as to
`improve sensitivity of the capacitive-type touch panel.
`0038 FIGS. 13 to 15 illustrate the sixth preferred embodi
`ment of the capacitive-type touch panel according to this
`invention. The sixth preferred embodiment differs from the
`fourth preferred embodiment in that the first conductors 41
`are formed on the second surface 32 of the transparent sub
`strate 3, and the second conductors 42 are formed on the first
`surface 31 of the transparent substrate 3. An insulator layer 74
`is disposed on the second surface 32 of the transparent sub
`strate 3 (in this embodiment, it is formed directly on the
`second surface 32 of the transparent substrate 3). The con
`ductive layer 73 is disposed on the insulator layer 74 (in this
`embodiment, it is formed directly on the insulator layer 74).
`0039 FIG. 16 illustrates the seventh preferred embodi
`ment of the capacitive-type touch panel according to this
`invention. The seventh preferred embodiment differs from the
`fourth preferred embodiment in that the capacitive-type touch
`panel of this embodiment further includes first and second
`Supporting Substrates 81, 82 Sandwiching the transparent Sub
`strate 3 therebetween, and that the first and second conductors
`41, 42 are respectively formed on the first and second Sup
`porting substrates 81, 82. Preferably, the first and second
`Supporting Substrates 81, 82 are made from a material
`selected from the group consisting of glass, polymethyl
`methacrylate, polyvinylchloride, polypropylene, polyethyl
`ene terephthalate, polyethylene naphthalate, polycarbonate,
`adhesive, resin, photoresist, silicon dioxide, titanium dioxide,
`Zinc oxide, silicon nitride, aluminum nitride, tantalum oxide,
`and combinations thereof.
`0040 FIG. 17 illustrates the eighth preferred embodiment
`of the capacitive-type touchpanel according to this invention.
`The eighth preferred embodiment differs from the fourth
`preferred embodiment in that the capacitive-type touch panel
`of this embodiment further includes a supporting substrate 83
`attached to the second surface 32 of the transparent substrate
`3. The first and second conductors 41, 42 are respectively
`formed on the first surface 31 of the transparent substrate 31
`and the supporting substrate 83.
`0041. By virtue of the fine conductor line-constructed
`structure of each of the first and second electrode sections
`411, 421 of the first and second conductors 41, 42 of the
`capacitive-type touch panel of this invention, the aforesaid
`drawbacks associated with the prior art can be eliminated, and
`the size of the capacitive-type touch panel of this invention
`can be enlarged as compared to the aforesaid conventional
`capacitive-type touch panels without exceeding the require
`ments in the sheet resistance and the capacitance from one
`peripheral end to an opposite peripheral end of the touch
`panel.
`0042. While the present invention has been described in
`connection with what are considered the most practical and
`preferred embodiments, it is understood that this invention is
`not limited to the disclosed embodiments but is intended to
`cover various arrangements included within the spirit and
`Scope of the broadest interpretation and equivalent arrange
`mentS.
`What is claimed is:
`1. A capacitive-type touch panel comprising:
`a transparent Substrate;
`a plurality of first conductors disposed on said transparent
`Substrate;
`
`a plurality of second conductors disposed on said transpar
`ent Substrate intersecting insulatively with said first con
`ductors, and cooperating with said first conductors to
`form a matrix of capacitive regions when a current is
`applied to said first and second conductors; and
`a controller connected electrically to said first and second
`conductors for detecting the capacitance of each of said
`capacitive regions;
`wherein each of said first conductors is intersected; and
`divided by said second conductors into a series of first
`electrode sections;
`wherein each of said second conductors is intersected and
`divided by said first conductors into a series of second
`electrode sections; and
`wherein each of said first and second electrode sections of
`said first and second conductors has a fine conductor
`line-constructed structure which is constructed from a
`fine line-shaped conductor.
`2. The capacitive-type touch panel of claim 1, wherein said
`fine conductor line-constructed structure of each of said first
`and second electrode sections of said first and second con
`ductors has a main part that is linear in shape.
`3. The capacitive-type touch panel of claim 1, wherein said
`fine conductor line-constructed structure of each of said first
`and second electrode sections of said first and second con
`ductors has a main part that includes a linear Stemportion and
`spaced apart linear branch portions transverse to said linear
`stem portion.
`4. The capacitive-type touchpanel of claim 1, wherein said
`fine conductor line-constructed structure of each of said first
`and second electrode sections of said first and second con
`ductors has a main part that is rectangular in shape.
`5. The capacitive-type touch panel of claim 1, wherein said
`fine conductor line-constructed structure of each of said first
`and second electrode sections of said first and second con
`ductors has a main part that has a screen-like shape.
`6. The capacitive-type touch panel of claim 1, wherein said
`fine conductor line-constructed structure of each of said first
`and second electrode sections of said first and second con
`ductors has a main part that has a screen-like shape and that
`defines a plurality of holes, each of which is filled with a
`transparent conductive material.
`7. The capacitive-type touch panel of claim 6, wherein said
`transparent conductive material is selected from the group
`consisting of indium-tin-oxide, indium-zinc-oxide, Zinc
`oxide, aluminum Zinc oxide, and combinations thereof.
`8. The capacitive-type touch panel of claim 1, wherein said
`fine line-shaped conductor has a layer thickness less than 250
`angStroms.
`9. The capacitive-type touch panel of claim 8, wherein said
`fine line-shaped conductor has a line width less than 200
`microns.
`10. The capacitive-type touch panel of claim 1, wherein
`said transparent Substrate has two opposite surfaces, said first
`and second conductors being formed on one of said Surfaces
`of said transparent Substrate, each of said first and second
`electrode sections of said first and second conductors having
`a main part and two opposite bridging parts extending from
`said main part, each of said bridging parts of each of said first
`electrode sections being connected to and cooperating with
`an adjacent one of said bridging parts of an adjacent one of
`said first electrode sections to define a first bridging line, each
`of said bridging parts of each of said second electrode sec
`tions being connected to and cooperating with an adjacent
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`Jan. 1, 2009
`
`one of said bridging parts of an adjacent one of said second
`electrode sections to define a second bridging line, said
`capacitive type touch panel further comprising a plurality of
`spaced apart insulators, each of which is disposed at an inter
`section of said first bridging line interconnecting said main
`parts of an adjacent pair of said first electrode sections and
`said second bridging line interconnecting said main parts of
`an adjacent pair of said second electrode sections, and each of
`which is sandwiched between said first bridging line inter
`connecting said main parts of the adjacent pair of said first
`electrode sections and said second bridging line interconnect
`ing said main parts of the adjacent pair of said second elec
`trode sections.
`11. The capacitive-type touch panel of claim 10, wherein
`said insulator is made from a material selected from the group
`consisting of photoresist, silicon dioxide, titanium dioxide,
`Zinc oxide, silicon nitride, aluminum nitride, tantalum oxide,
`and combinations thereof.
`12. The capacitive-type touch panel of claim 1, wherein
`said transparent Substrate is made from a material selected
`from the group consisting of glass, polymethylmethacrylate,
`polyvinylchloride, polypropylene, polyethylene terephtha
`late, polyethylene naphthalate, polycarbonate, and combina
`tions thereof.
`13. The capacitive-type touch panel of claim 1, wherein
`said transparent Substrate has two opposite surfaces, said first
`and second conductors being respectively formed on said
`Surfaces of said transparent Substrate.
`14. The capacitive-type touch panel of claim 1, wherein
`said transparent Substrate has two opposite surfaces, said
`capacitive-type touch panel further comprising first and sec
`ond Supporting Substrates sandwiching said transparent Sub
`strate therebetween, said first and second conductors being
`respectively formed on said first and second Supporting Sub
`Strates.
`15. The capacitive-type touch panel of claim 14, wherein
`said first and second Supporting Substrates are made from a
`material selected from the group consisting of glass, polym
`ethylmethacrylate, polyvinylchloride, polypropylene, poly
`ethylene terephthalate, polyethylene naphthalate, polycar
`
`bonate, adhesive, resin, photoresist, silicon dioxide, titanium
`dioxide, Zinc oxide, silicon nitride, aluminum nitride, tanta
`lum oxide, and combinations thereof.
`16. The capacitive-type touch panel of claim 1, wherein
`said transparent Substrate has two opposite surfaces, said
`capacitive-type touch panel further comprising a Supporting
`Substrate attached to one of said Surfaces of said transparent
`Substrate, said first and second conductors being respectively
`formed on said Supporting Substrate and the other of said
`Surfaces of said transparent Substrate.
`17. The capacitive-type touch panel of claim 16, wherein
`said Supporting Substrate is made from a material selected
`from the group consisting of glass, polymethylmethacrylate,
`polyvinylchloride, polypropylene, polyethylene terephtha
`late, polyethylene naphthalate, polycarbonate, adhesive,
`resin, photoresist, silicon dioxide, titanium dioxide, Zinc
`oxide, silicon nitride, aluminum nitride, tantalum oxide, and
`combinations thereof.
`18. The capacitive-type touch panel of claim 1, wherein
`said transparent Substrate has two opposite surfaces, said
`capacitive-type touch panel further comprising a protective
`layer and a conductive layer that are respectively disposed on
`said Surfaces of said transparent Substrate, said conductive
`layer being made from a transparent conductive material and
`functioned as one of a grounding medium and an electromag
`netically shielding medium.
`19. The capacitive-type touch panel of claim 18, wherein
`said protective layer is made from a material selected from the
`group consisting of adhesive, resin, photoresist, oxides,
`nitrides, and combinations thereof.
`20. The capacitive-type touch panel of claim 1, wherein
`said fine line-shaped conductor is made from a metallic mate
`rial selected from the group consisting of Cu, Al, Au, Ag, Ni,
`Cr, Mo, and combinations thereof.
`21. The capacitive-type touch panel of claim 1, wherein
`said fine line-shaped conductor has a dimension that permits
`said fine line-shaped conductor to be substantially not visible
`to the naked eye.
`
`PANASONIC EX1011, page 022
` IPR2021-01115
`
`