WO2014069387A1 - タッチパネル - Google Patents
タッチパネル Download PDFInfo
- Publication number
- WO2014069387A1 WO2014069387A1 PCT/JP2013/079085 JP2013079085W WO2014069387A1 WO 2014069387 A1 WO2014069387 A1 WO 2014069387A1 JP 2013079085 W JP2013079085 W JP 2013079085W WO 2014069387 A1 WO2014069387 A1 WO 2014069387A1
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- WIPO (PCT)
- Prior art keywords
- touch panel
- conductive layer
- wiring
- layer
- electrode
- Prior art date
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136204—Arrangements to prevent high voltage or static electricity failures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
Definitions
- the present invention relates to a touch panel capable of detecting a touch position on an operation surface.
- a touch panel capable of detecting a position touched by a pen or a finger on an operation surface, that is, a touch position.
- a touch panel includes, for example, a detection electrode extending in the X direction and the Y direction so as to form a detection region, a wiring electrode forming a wiring region, and a detection as disclosed in JP 2010-218542 A
- a shielding electrode provided so as to surround the region and the region including the wiring region.
- the static electricity that enters from the outer end in the surface direction of the substrate can be shielded by the shielding electrode.
- the shielding electrode is formed on the substrate so as to surround the detection electrode and the wiring electrode. Therefore, it is necessary to secure a shield electrode formation region on the substrate so as to surround the detection electrode and the wiring electrode.
- the frame area formed around the detection area of the touch panel becomes large. For this reason, the entire touch panel is increased in size.
- An object of the present invention is to realize a touch panel capable of preventing transmission of static electricity to electrodes and wirings with a compact configuration.
- a touch panel includes a substrate, a plurality of electrodes formed on the substrate, wirings formed on the substrate and electrically connected to the plurality of electrodes, the electrodes, An insulating layer that covers the wiring and a conductive layer formed on the insulating layer in order to flow static electricity input from the outside.
- a configuration capable of preventing the transmission of static electricity to the electrode and the wiring can be realized by a compact configuration.
- FIG. 1 is a diagram schematically illustrating a configuration of a liquid crystal display device with a touch panel including the touch panel according to the first embodiment.
- FIG. 2 is a plan view showing a schematic configuration of a liquid crystal display device with a touch panel.
- 3 is a cross-sectional view taken along line III-III in FIG.
- FIG. 4 is a view corresponding to FIG. 3 showing the flow of static electricity.
- FIG. 5 is a diagram showing a test result of air discharge.
- FIG. 6 is a view corresponding to FIG. 3 illustrating a schematic configuration of the liquid crystal display device with a touch panel according to the second embodiment.
- FIG. 7 is a view corresponding to FIG. 4 showing the flow of static electricity.
- FIG. 8 is a diagram showing test results of air discharge and contact discharge.
- a touch panel includes a substrate, a plurality of electrodes formed on the substrate, wirings formed on the substrate and electrically connected to the plurality of electrodes, the electrodes, An insulating layer that covers the wiring and a conductive layer formed on the insulating layer in order to flow static electricity input from the outside (first configuration).
- the conductive layer is formed on the insulating layer covering the electrodes and the wiring.
- region of a touchscreen can be reduced in size. That is, when the conductive layer is laminated in the thickness direction with respect to the insulating layer as described above, the conductive layer is arranged in the plane direction of the insulating layer so as to be the same as the shortest distance between the conductive layer and the electrode or wiring in that case. Compared with the case where it arrange
- the conductive layer is preferably formed on the outer peripheral side of the substrate (second configuration).
- the first or second configuration it is preferable to further include a high resistance layer provided between the insulating layer and the conductive layer (third configuration).
- a high resistance layer provided between the insulating layer and the conductive layer in this manner, static electricity flowing through the conductive layer can be prevented from being discharged to the electrode and the wiring with the insulating layer interposed therebetween. Thereby, it can prevent more reliably that static electricity flows into the electrode and wiring of a touch panel.
- the high resistance layer can be formed of, for example, a material having the same resistance as the insulating layer or a higher resistance than the insulating layer.
- the conductive layer includes a first conductive part located on the insulating layer, and a first conductive part electrically connected to the first conductive part and located on the outer side in the surface direction of the insulating layer. It is preferable to have two conductive portions (fourth configuration).
- the wiring includes a driving side wiring and a detection side wiring
- the conductive layer is provided to overlap the driving side wiring in a plan view.
- Drive side conductive layer and a detection side conductive layer provided so as to overlap the detection side wiring, and the drive side conductive layer and the detection side conductive layer are electrically independent. Preferred (fifth configuration).
- the substrate is preferably a protective plate located on the operation surface side (sixth configuration).
- the substrate and the protective plate are electrodes from the outer surface of the substrate (the touch surface of the touch panel) as compared to a separate configuration. And the distance to the wiring is short.
- FIG. 1 schematic structure of the liquid crystal display device 1 with a touch panel provided with the touch panel 2 which concerns on Embodiment 1 is shown.
- a touch panel 2 capable of detecting a touch position is superimposed on a liquid crystal panel 3 capable of displaying an image.
- reference numeral 6 denotes a transparent adhesive layer for joining the touch panel 2 and the liquid crystal panel 3.
- the illustration of the backlight and the like laminated on the liquid crystal panel 3 is omitted.
- the liquid crystal panel 3 includes an active matrix substrate 7 in which a large number of pixels are arranged in a matrix, a counter substrate 8 disposed to face the active matrix substrate 7, and between the active matrix substrate 7 and the counter substrate 8. And a liquid crystal layer 9 to be disposed. Since the configuration of the liquid crystal panel 3 is the same as that of a conventional liquid crystal panel, detailed description thereof is omitted.
- the touch panel 2 includes a glass substrate 4 and a laminated film 5 formed on the glass substrate 4.
- the glass substrate 4 also has a function as a protective plate of the touch panel 2.
- the thickness of the entire touch panel can be reduced as compared with a configuration in which a protective plate is provided separately from the substrate.
- the laminated film 5 includes a transparent conductive film 11 (see FIG. 2) that constitutes the electrodes 13 and 14 and the wiring 15 on the glass substrate 4, and an insulating resin that covers the electrodes 13 and 14 and the wiring 15.
- Layer 12 (see FIG. 3).
- the transparent conductive film 11 is formed on the glass substrate 4 with a transparent conductive material such as ITO.
- the transparent conductive film 11 includes an X-direction electrode 13 extending in the X direction, a Y-direction electrode 14 extending in the Y direction, and a wiring electrically connected to the X-direction electrode 13 and the Y-direction electrode 14. 15.
- the X direction electrode 13 and the Y direction electrode 14 are arranged so as to intersect as shown in FIG.
- a predetermined voltage is applied to the X direction electrode 13.
- the electrostatic capacitance between the X direction electrode 13 and the Y direction electrode 14 will change in the contact position.
- the control unit can detect the touch position.
- the X-direction electrode 13 includes a substantially triangular electrode pad 13a, a substantially square electrode pad 13b, and a bridge 13c connecting the electrode pads 13a and 14a.
- a plurality of substantially rectangular electrode pads 13b are arranged side by side in the X direction so as to be closest to the adjacent electrode pads 13b at the corners.
- the substantially triangular electrode pads 13a are respectively disposed on both ends of the glass substrate 4 in the X direction so as to sandwich the substantially square electrode pads 13b arranged in the X direction.
- the electrode pads 13a and 13b are electrically connected in the X direction by a bridge 13c.
- a plurality of X-direction electrodes 13 are provided on the glass substrate 4 so as to be arranged in parallel to the Y direction.
- a wiring 15 is connected to a substantially triangular electrode pad 13 a located at one end of the X-direction electrode 13.
- the Y-direction electrode 14 has a shape in which a substantially triangular triangular electrode portion 14a and a substantially square-shaped square electrode portion 14b are arranged in the Y direction and connected in the Y direction. That is, the Y-direction electrode 14 has a shape in which the triangular electrode portion 14a and the square electrode portion 14b arranged in the Y direction so that the corner portions thereof are closest to each other are connected by the linear connection portion 14c.
- the arrangement of the electrode portions 14 a and 14 b in the Y direction electrode 14 is the same as that of the electrode pads 13 a and 13 b of the X direction electrode 13.
- a plurality of Y direction electrodes 14 are provided on the glass substrate 4 so as to be arranged in parallel to the X direction.
- the Y direction electrode 14 is provided on the glass substrate 4 so that the linear connection portion 14 c intersects the bridge 13 c of the X direction electrode 13.
- the bridge 13c of the X direction electrode 13 crosses the connection portion 14c of the Y direction electrode 14 in a three-dimensional manner.
- a wiring 15 is connected to the triangular electrode portion 14 a located at one end of the Y-direction electrode 14.
- the wiring 15 includes a driving side wiring 15 a connected to the electrode pad 13 a of the X direction electrode 13 and a detection side wiring 15 b connected to the triangular electrode portion 14 a of the Y direction electrode 14.
- the driving side wiring 15 a and the detection side wiring 15 b are formed on the glass substrate 4 outward in the surface direction of the X direction electrode 13 and the Y direction electrode 14. In the case of the example shown in FIG. 3, the drive side wiring 15a is two on the right side, and the detection side wiring 15b is two on the left side.
- the drive-side wiring 15a and the detection-side wiring 15b are collected at, for example, one place on the glass substrate 4 as shown in FIG. Thereby, the touch panel 2 and the external control part which is not shown in figure can be connected easily.
- a black matrix layer 21 (hereinafter referred to as a BM layer) is formed so as to surround a region where the X direction electrode 13 and the Y direction electrode 14 are formed (see FIG. 3).
- the BM layer 21 is a light shielding layer, and is provided on the glass substrate 4 so that the wiring 15 and the like are not visible from the viewing side. That is, as shown in FIG. 3, the wiring 15 is formed on the BM layer 21 formed on the glass substrate 4.
- the BM layer 21 has a thickness of 1.4 ⁇ m, for example.
- the insulating resin layer 12 is formed on the X direction electrode 13, the Y direction electrode 14, the wiring 15 and the BM layer 21.
- the insulating resin layer 12 is made of a transparent resin material such as a transparent acrylic resist.
- the insulating resin layer 12 has a thickness of 1.5 ⁇ m, for example.
- the insulating resin layer 12 is fixed to the liquid crystal panel 3 by the adhesive layer 6.
- the adhesive layer 6 is composed of a highly transparent adhesive (OCA: optical clear adhesive) for liquid crystal displays.
- a high resistance layer 22 is formed between the adhesive layer 6 and the insulating resin layer 12 corresponding to the BM layer 21. That is, in this embodiment, the high resistance layer 22 is formed on the insulating resin layer 12 so as to surround the X direction electrode 13 and the Y direction electrode 14 in a plan view, like the BM layer 21.
- the high resistance layer 22 is made of an ink material such as carbon-based pigment ink.
- the high resistance layer 22 has a higher resistivity than the BM layer 21 and the insulating resin layer 12.
- the high resistance layer 22 has a thickness of 5 ⁇ m, for example.
- a conductive layer 23 is formed on the high resistance layer 22. Although not particularly illustrated, the conductive layer 23 is connected to a GND terminal (ground terminal).
- the conductive layer 23 is formed on the outer peripheral side of the glass substrate 4 in plan view. In the present embodiment, the conductive layer 23 is formed only on the outer peripheral side of the glass substrate 4 with respect to the high resistance layer 22 in a plan view of the glass substrate 4.
- the conductive layer 23 is covered with an adhesive layer 6 that bonds the touch panel 2 and the liquid crystal panel 3 together.
- the conductive layer 23 is made of, for example, Ag paste.
- the conductive layer 23 may be made of a material such as Au, Al, Cu, Fe, Cr, or Ti.
- the conductive layer 23 is preferably a material having a lower resistance value.
- the high resistance layer 22 between the insulating resin layer 12 and the conductive layer 23, it is possible to prevent discharge from the conductive layer 23 to the wiring 15 as shown by the one-dot chain line arrow in FIG. .
- the dielectric constant of the high resistance layer 22 is set to be as low as that of the insulating resin layer 12, it is possible to prevent a coupling capacitance from being generated between the conductive layer 23 and the wiring 15. Thereby, it is possible to prevent noise or the like from flowing through the wiring, and to prevent a decrease in detection accuracy of the touch panel 2.
- the air discharge with respect to the liquid crystal display device 1 with a touch panel was performed by a gun disposed 5 mm or less from the surface of the touch panel 2 using an electrostatic tester (ESS-2000) manufactured by Noise Research Institute. Moreover, air discharge was performed with respect to nine places of the surface direction of the liquid crystal display device 1 with a touch panel for every voltage.
- ESS-2000 electrostatic tester manufactured by Noise Research Institute.
- the breakdown voltage is 6 kV, whereas in the configuration of the present embodiment, the breakdown voltage is 10 kV. That is, by providing the high resistance layer 22 and the conductive layer 23 as in this embodiment, the withstand voltage of static electricity is increased.
- a conductive layer 23 is provided on the outer peripheral side of the glass substrate 4 on the insulating resin layer 12 of the touch panel 2.
- the frame area of the touch panel 2 can be reduced in size as compared with the conventional configuration in which the conductive layer is provided outward in the surface direction of the electrodes and wirings. . That is, when the conductive layer is laminated in the thickness direction with respect to the insulating layer as in the configuration of the present embodiment, the conductive layer is made the same as the shortest distance between the conductive layer and the electrode or wiring in that case. Compared with the case where it is arranged in the surface direction, the size of the touch panel in the surface direction can be reduced. Therefore, the touch panel 2 can be reduced in size by the configuration of the present embodiment.
- a high resistance layer 22 is formed between the conductive layer 23 and the resin insulating layer 12 covering the wiring 15. Thereby, the high resistance layer 22 can prevent static electricity flowing in the conductive layer 23 from being discharged to the wiring 15 with the resin insulating layer 12 interposed therebetween.
- the conductive layer 23 is positioned in the adhesive layer 6 by covering the conductive layer 23 with the adhesive layer 6 that bonds the touch panel 2 and the liquid crystal panel 3 together. Thereby, it can prevent that the thickness of the liquid crystal display device 1 with a touch panel increases with the thickness of the conductive layer 23.
- the conductive layer 23 is provided between the touch panel 2 and the liquid crystal panel 3 and is covered with the adhesive layer 6. That is, the conductive layer 23 is located between the touch panel 2 and the liquid crystal panel 3.
- the conductive layer 23 may be provided in the touch panel 2. That is, the conductive layer 23 may be formed in the insulating resin layer 12 of the touch panel 2. The conductive layer 23 may be sandwiched between the insulating resin layer 12 and another insulating layer formed thereon. Further, the conductive layer 23 may be formed on the counter substrate 8 of the liquid crystal panel 3.
- FIG. 6 shows a schematic configuration of a liquid crystal display device 30 with a touch panel according to the second embodiment.
- This embodiment is different from the first embodiment in that conductive layers 31 and 32 are formed on the insulating resin layer 12 of the touch panel 2.
- the same components as those in the first embodiment are denoted by the same reference numerals, the description thereof is omitted, and only portions different from those in the first embodiment will be described.
- a drive-side conductive layer 31 is formed on the insulating resin layer 12 of the touch panel 2 so as to overlap the drive-side wiring 15 a and the thickness direction of the touch panel 2.
- the drive-side conductive layer 31 includes a first conductive portion 31 a located on the insulating resin layer 12, and a first conductive portion 31 a that is electrically connected to the first conductive portion 31 a and located on the outer side in the surface direction of the insulating resin layer 12. 2 conductive portions 31b. That is, in the example illustrated in FIG. 6, the second conductive portion 31 b is located on the side surface of the insulating resin layer 12.
- the insulating resin layer 12 of the present embodiment has an outer peripheral end located inside the glass substrate 4 rather than an outer peripheral end of the glass substrate 4. Thereby, as shown in FIG. 6, the second conductive portion 31 b covering the outer peripheral end of the insulating resin layer 12 is formed flush with the glass substrate 4 or the like at the end surface of the outer peripheral end of the touch panel 2.
- a detection-side conductive layer 32 is formed on the insulating resin layer 12 of the touch panel 2 so as to overlap the detection-side wiring 15b and the thickness direction of the touch panel 2.
- the driving side conductive layer 31 and the detection side conductive layer 32 are made of a transparent conductive material such as ITO. Thereby, the drive side conductive layer 31 and the detection side conductive layer 32 can be made of the same material as the X direction electrode 13, the Y direction electrode 14, and the wiring 15. Thus, the conductive layer can be formed simultaneously with the formation of electrodes, wirings, etc., so that the manufacturing cost can be reduced.
- a protective layer 33 is formed on the drive side conductive layer 31 and the detection side conductive layer 32. That is, the driving side conductive layer 31 and the detection side conductive layer 32 are covered with the protective layer 33. Thereby, it is possible to prevent the driving side conductive layer 31 and the detection side conductive layer 32 from being exposed.
- the protective layer 33 is made of, for example, carbon-based pigment ink.
- the protective layer 33 may be provided for protecting other films of the touch panel 2 or improving the appearance of the touch panel 2.
- a static electricity discharge test was performed on the liquid crystal display device 1 with a touch panel having the above-described configuration.
- contact discharge is also performed in which discharge is performed while the gun of the electrostatic tester is in contact with the touch panel 2.
- the contact discharge was performed at nine locations in the surface direction of the liquid crystal display device 1 with a touch panel for each voltage, as in the air discharge of the first embodiment.
- electrostatic tester used in the discharge test and the air discharge test conditions are the same as those in the first embodiment.
- Fig. 8 shows the test results of air discharge and contact discharge.
- the breakdown voltage is 6 kV in the conventional configuration in which the conductive layers 31 and 32 are not provided, whereas the breakdown voltage is 16 kV in the configuration of the present embodiment.
- the breakdown voltage is 3 kV in the conventional configuration in which the conductive layers 31 and 32 are not provided, whereas the breakdown voltage is 4 kV in the configuration of the present embodiment.
- the breakdown voltage can be improved in both the air discharge and the contact discharge.
- a drive side conductive layer 31 and a detection side conductive layer 32 are formed on the insulating resin layer 12 of the touch panel 2.
- static electricity input from the outside can be caused to flow through the drive-side conductive layer 31 or the detection-side conductive layer 32. Therefore, static electricity can be prevented from flowing through the X direction electrode 13, the Y direction electrode 14, and the wiring 15 of the touch panel 2.
- the drive side conductive layer 31 corresponding to the drive side wiring 15a and the detection side conductive layer 32 corresponding to the detection side wiring 15b are provided in an electrically separated state. Thereby, it is possible to prevent the drive side wiring 15a and the detection side wiring 15b from affecting each other.
- the X-direction electrode 13 and the Y-direction electrode 14 of the touch panel 2 are each configured by a combination of a triangular electrode and a square electrode.
- the X direction electrode and the Y direction electrode may have other shapes such as a rectangular shape.
- the substrate of the touch panel 2 is the glass substrate 4.
- the substrate of the touch panel 2 may be a transparent resin substrate.
- the conductive layers 23, 31, and 32 are formed on the entire outer peripheral side of the glass substrate 4 of the touch panel 2 in plan view.
- a conductive layer may be provided only in a portion where it is necessary to protect the X direction electrode 134, the Y direction electrode 14, and the wiring 15 from static electricity.
- the drive-side conductive layer 31 has the first conductive portion 31 a located on the insulating resin layer 12 and the second conductive portion 31 b located outward in the surface direction of the insulating resin layer 12.
- the detection-side conductive layer 32 may have a first conductive portion and a second conductive portion.
- the touch panel according to the present invention can be used for a touch panel including a plurality of wirings connected to a plurality of electrodes formed on a substrate.
Abstract
Description
図1に、実施形態1に係るタッチパネル2を備えたタッチパネル付き液晶表示装置1の概略構成を示す。この図1に示すように、タッチパネル付き液晶表示装置1では、タッチ位置を検出可能なタッチパネル2が、画像を表示可能な液晶パネル3に重ね合わされる。なお、図1において、符号6は、タッチパネル2と液晶パネル3とを接合するための透明な接着層である。なお、図1において、液晶パネル3に積層されるバックライト等については図示を省略する。
この実施形態では、タッチパネル2の絶縁樹脂層12上でガラス基板4の外周側に、導電層23が設けられる。これにより、タッチパネル2の外部から入力された静電気を導電層23に流すことができる。よって、タッチパネル2のX方向電極13、Y方向電極14及び配線15に静電気が流れるのを防止できる。
実施形態1では、導電層23は、タッチパネル2と液晶パネル3との間に設けられていて、接着層6によって覆われている。すなわち、導電層23は、タッチパネル2と液晶パネル3との間に位置する。これに対し、導電層23は、タッチパネル2内に設けられていてもよい。すなわち、導電層23は、タッチパネル2の絶縁樹脂層12内に形成されていてもよい。また、導電層23は、絶縁樹脂層12とその上に形成される別の絶縁層との間に挟み込まれていてもよい。さらに、導電層23は、液晶パネル3の対向基板8上に形成されていてもよい。
図6に、実施形態2に係るタッチパネル付き液晶表示装置30の概略構成を示す。この実施形態では、タッチパネル2の絶縁樹脂層12上に導電層31,32が形成される点で実施形態1とは構成が異なる。以下の説明において、実施形態1と同様の構成には同一の符号を付して説明を省略し、実施形態1と異なる部分についてのみ説明する。
この実施形態では、タッチパネル2の絶縁樹脂層12上に、駆動側導電層31及び検出側導電層32が形成されている。これにより、外部から入力される静電気を駆動側導電層31または検出側導電層32に流すことができる。よって、タッチパネル2のX方向電極13、Y方向電極14及び配線15に静電気が流れるのを防止できる。
以上、本発明の実施の形態を説明したが、上述した実施の形態は本発明を実施するための例示に過ぎない。よって、本発明は上述した実施の形態に限定されることなく、その趣旨を逸脱しない範囲内で上述した実施の形態を適宜変形して実施することが可能である。
2 タッチパネル
4 ガラス基板(基板)
12 絶縁樹脂層(絶縁層)
13 X方向電極(電極)
14 Y方向電極(電極)
15 配線
15a 駆動側配線
15b 検出側配線
22 高抵抗層
23 導電層
31 駆動側導電層(導電層)
31a 第1導電部
31b 第2導電部
32 検出側導電層(導電層)
Claims (6)
- 基板と、
前記基板上に形成された複数の電極と、
前記基板上に形成され、前記複数の電極に電気的に接続された配線と、
前記電極及び前記配線を覆う絶縁層と、
外部から入力される静電気を流すために、前記絶縁層上に形成された導電層とを備える、タッチパネル。 - 前記導電層は、前記基板の外周側に形成されている、請求項1に記載のタッチパネル。
- 前記絶縁層と前記導電層との間に設けられた高抵抗層をさらに備える、請求項1または2に記載のタッチパネル。
- 前記導電層は、前記絶縁層上に位置する第1導電部と、該第1導電部に電気的に接続され且つ前記絶縁層の面方向外方側に位置する第2導電部とを有する、請求項2に記載のタッチパネル。
- 前記配線は、駆動側配線と検出側配線とを有し、
前記導電層は、平面視で前記駆動側配線と重なるように設けられた駆動側導電層と、前記検出側配線と重なるように設けられた検出側導電層とを有し、
前記駆動側導電層及び前記検出側導電層は、電気的に独立している、請求項1から4のいずれか一つに記載のタッチパネル。 - 前記基板は、操作面側に位置する保護板である、請求項1から5のいずれか一つに記載のタッチパネル。
Priority Applications (3)
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US14/438,317 US9529462B2 (en) | 2012-10-29 | 2013-10-28 | Touch panel |
JP2014544488A JP5930061B2 (ja) | 2012-10-29 | 2013-10-28 | タッチパネル |
CN201380056365.XA CN104781764B (zh) | 2012-10-29 | 2013-10-28 | 触摸面板 |
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JP2012237688 | 2012-10-29 | ||
JP2012-237688 | 2012-10-29 |
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WO2014069387A1 true WO2014069387A1 (ja) | 2014-05-08 |
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PCT/JP2013/079085 WO2014069387A1 (ja) | 2012-10-29 | 2013-10-28 | タッチパネル |
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US (1) | US9529462B2 (ja) |
JP (1) | JP5930061B2 (ja) |
CN (1) | CN104781764B (ja) |
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JP2017215927A (ja) * | 2016-05-26 | 2017-12-07 | 株式会社ジャパンディスプレイ | 表示装置及びセンサ |
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JP2018088142A (ja) * | 2016-11-29 | 2018-06-07 | 株式会社ジャパンディスプレイ | 表示装置 |
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KR102302811B1 (ko) * | 2013-12-16 | 2021-09-16 | 엘지이노텍 주식회사 | 터치 패널 |
KR102507338B1 (ko) * | 2015-11-27 | 2023-03-08 | 엘지디스플레이 주식회사 | 터치 스크린 패널을 갖는 표시장치 |
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Also Published As
Publication number | Publication date |
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CN104781764A (zh) | 2015-07-15 |
CN104781764B (zh) | 2017-07-18 |
US9529462B2 (en) | 2016-12-27 |
US20150253809A1 (en) | 2015-09-10 |
JP5930061B2 (ja) | 2016-06-08 |
JPWO2014069387A1 (ja) | 2016-09-08 |
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