JP2014191359A - Input device, display device, and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an input device, display device, and electronic apparatus capable of reducing possibility that detection accuracy is reduced.SOLUTION: An input device X1 includes a substrate 2, a first detection electrode 3a that is provided on the substrate 2, a first light blocking layer 6 that is provided on the substrate 2, a wiring for detection 8 that is provided on the first light blocking layer 6 and is electrically connected with the first detection electrode 3a, and a conductive layer 9 that is provided on the first light blocking layer 6 and is located separated from the wiring for detection 8. The first light blocking layer 6 is provided with an opening 6a at a portion located between the wiring for detection 8 and the conductive layer 9 in plan view.

Description

  The present invention relates to an input device, a display device, and an electronic device.

  2. Description of the Related Art Conventionally, an input device that detects an input position by detecting a change in capacitance between a finger and a detection electrode is known. In such an input device, a detection electrode and a light shielding layer are provided on a substrate. In addition, a detection wiring is provided on the light shielding layer, and the detection wiring and the detection electrode are electrically connected (for example, see Patent Document 1). On the light shielding layer, for example, a conductive layer is provided for the purpose of protecting the detection wiring from electrical noise. The conductive layer is located away from the detection wiring.

JP 2011-90443 A

  However, in the above input device, since the detection wiring and the conductive layer are provided on the light shielding layer, there is a possibility that the detection accuracy is lowered. That is, the light shielding layer includes, for example, a conductive coloring material, and impedance may be generated between the detection wiring and the conductive layer through the light shielding layer.

  The present invention has been made in view of such circumstances, and an object thereof is related to an input device, a display device, and an electronic apparatus that can reduce the possibility of a decrease in detection accuracy.

  One aspect of the input device of the present invention is provided on a base, a detection electrode provided on the base, a first light shielding layer provided on the base, and the first light shielding layer, A detection wiring electrically connected to the detection electrode; and a conductive layer provided on the first light shielding layer and spaced apart from the detection wiring, wherein the first light shielding layer comprises: An opening is provided in a portion located between the detection wiring and the conductive layer in plan view.

  One aspect of the display device of the present invention includes the input device according to the present invention and a display panel disposed to face the input device.

  One embodiment of the electronic device of the present invention includes the display device according to the present invention and a housing in which the display device is accommodated.

  The input device, the display device, and the electronic apparatus according to the present invention have an effect that the possibility that the detection accuracy is lowered can be reduced.

It is a top view which shows schematic structure of the input device which concerns on this embodiment. It is the II sectional view taken on the line shown in FIG. It is the II-II sectional view taken on the line shown in FIG. It is the III-III sectional view taken on the line shown in FIG. It is the top view to which area | region A1 enclosed with the dashed-dotted line shown in FIG. 1 was expanded. It is sectional drawing which shows schematic structure of the display apparatus which concerns on this embodiment. It is a perspective view which shows schematic structure of the portable terminal which concerns on this embodiment. 10 is a plan view illustrating a schematic configuration of an input device according to Modification 1. FIG. It is the IV-IV sectional view taken on the line shown in FIG. It is the top view to which area | region A2 enclosed with the dashed-dotted line shown in FIG. 8 was expanded. 10 is a plan view showing a schematic configuration of an input device according to Modification 2. FIG. It is the VV sectional view taken on the line shown in FIG. It is the top view to which area | region A3 enclosed with the dashed-dotted line shown in FIG. 11 was expanded. 10 is a plan view illustrating a schematic configuration of an input device according to Modification 3. FIG. It is the VI-VI sectional view taken on the line shown in FIG. It is the top view to which area | region A4 enclosed with the dashed-dotted line shown in FIG. 14 was expanded.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  However, for convenience of explanation, the drawings to be referred to below show simplified main members necessary for explaining the present invention, among the constituent members of one embodiment of the present invention. Therefore, the input device, the display device, and the electronic device according to the present invention can include arbitrary constituent members that are not shown in the drawings referred to in this specification.

  As shown in FIGS. 1 to 3, the input device X <b> 1 according to the present embodiment is a projected capacitive touch panel, and has an input area E <b> 1 and a non-input area E <b> 2. The input area E1 is an area where the user can perform an input operation. The non-input area E2 is an area where the user cannot perform an input operation. The non-input area E2 according to the present embodiment is located outside the input area E1 so as to surround the input area E1, but is not limited thereto. The non-input area E2 may be located so as to be surrounded by the input area E1, for example.

  The input device X1 according to the present embodiment is a cover glass-integrated capacitive touch panel, but is not limited thereto, and is not limited to this, and is a laminated, on-cell, or in-cell capacitive method. It may be a touch panel.

  The input device X1 includes a base body 2, a first detection electrode pattern 3, a second detection electrode pattern 4, an insulator 5, a first light shielding layer 6, a first coating layer 7, a detection wiring 8, a conductive layer 9, and a second coating. A layer 10, a first protective layer 11, and a second protective layer 12 are provided.

  First, the base | substrate 2, the 1st detection electrode pattern 3, the 2nd detection electrode pattern 4, and the insulator 5 are demonstrated, referring FIGS. 1-3. In FIG. 1, the insulator 5 is not shown for convenience of explanation.

  The base 2 has a role of supporting all members included in the input device X1. The base 2 has a first main surface 2A and a second main surface 2B. The first main surface 2A is located closer to the user than the second main surface 2B. The second main surface 2B is located on the opposite side of the first main surface 2A. In the present embodiment, the base body 2 has a substantially rectangular shape in plan view, but is not limited thereto, and may be an elliptical shape or a polygonal shape.

The base 2 has an insulating property. In addition, the base 2 is translucent to light incident in a direction intersecting the first main surface 2A and the second main surface 2B of the base 2. Here, “translucency” in this specification means a property of transmitting part or all of visible light. In the present embodiment, the constituent material of the base 2 is glass. As the glass, it is preferable to use glass chemically strengthened by ion exchange in order to improve strength. In addition, when the base 2 is chemically strengthened, it can be understood that the base 2 also includes a chemically strengthened layer. Further, the constituent material of the base 2 is not limited to glass, and may be plastic, for example.

  The first detection electrode pattern 3 generates capacitance between the user's finger F1 approaching the first main surface 2A of the base 2 corresponding to the input area E1, and detects the input position in the Y direction. Have A plurality of first detection electrode patterns 3 are provided side by side in the Y direction on the second main surface 2B of the base 2 corresponding to the input region E1. The first detection electrode pattern 3 includes a first detection electrode 3a and a first inter-electrode wiring 3b.

  The 1st detection electrode 3a has a role which generate | occur | produces an electrostatic capacitance between user's fingers F1. A plurality of first detection electrodes 3a are provided side by side in the X direction. The first inter-electrode wiring 3b has a role of electrically connecting the first detection electrodes 3a. The first inter-electrode wiring 3b is provided between the first detection electrodes 3a adjacent to each other.

  The second detection electrode pattern 4 generates capacitance between the user's finger F1 approaching the first main surface 2A of the base 2 corresponding to the input region E1, and detects the input position in the X direction. Have A plurality of second detection electrode patterns 4 are provided side by side in the X direction on the second main surface 2B of the base 2 corresponding to the input region E1. The second detection electrode pattern 4 includes a second detection electrode 4a and a second interelectrode wiring 4b.

  The 2nd detection electrode 4a has a role which generate | occur | produces an electrostatic capacitance between user's fingers F1. A plurality of second detection electrodes 4a are provided side by side in the Y direction. The second inter-electrode wiring 4b has a role of electrically connecting the second detection electrodes 4a. The second inter-electrode wiring 4b is provided on the insulator 5 across the insulator 5 so as to be electrically insulated from the first inter-electrode wiring 3b between the second detection electrodes 4a adjacent to each other. Yes. Here, the insulator 5 is provided on the second main surface 2B of the base 2 so as to cover the first inter-electrode wiring 3b. Examples of the constituent material of the insulator 5 include transparent resins such as acrylic resin, epoxy resin, silicone resin, silicon dioxide, or silicon nitride.

  As a constituent material of the first detection electrode pattern 3 and the second detection electrode pattern 4 described above, a conductive member having translucency can be cited. Examples of the light-transmitting conductive member include ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), AZO (Al-Doped Zinc Oxide), tin oxide, zinc oxide, or a conductive polymer. .

  As a method for forming the first detection electrode pattern 3 and the second detection electrode pattern 4, for example, the above-described materials are formed on the second main surface 2 </ b> B of the base 2 by sputtering, vapor deposition, or CVD (Chemical Vapor Deposition). Form a film. And the photosensitive resin is apply | coated to the surface of this film | membrane, the 1st detection electrode pattern 3 and the 2nd detection electrode pattern 4 are formed by patterning a film | membrane through an exposure, image development, and an etching process.

  Next, referring to FIGS. 4 and 5 in addition to FIGS. 1 to 3, the first light shielding layer 6, the first coating layer 7, the detection wiring 8, the conductive layer 9, the second coating layer 10, The 1st protective layer 11 and the 2nd protective layer 12 are demonstrated.

The first light shielding layer 6 serves to shield the non-input area E2 of the input device X1. For this reason, the 1st light shielding layer 6 has light-shielding property. In this specification, “light shielding” refers to the property of shielding part or all of incident light. The first light shielding layer 6 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2. The first light shielding layer 6 has an opening 6a. In the present embodiment, the opening 6 a is provided along the conductive layer 9. Therefore, the opening 6a is positioned so as to surround the input region E1 and the detection wiring 8 in plan view.

  Examples of the constituent material of the first light shielding layer 6 include a resin material containing a coloring material. Examples of the resin material include acrylic resins, epoxy resins, and silicone resins. Examples of the coloring material include carbon, titanium, and chromium. Examples of the method for forming the light shielding layer 6 include a screen printing method, a sputtering method, a CVD method, and a vapor deposition method.

  The first covering layer 7 has a role of protecting the first light shielding layer 6. Here, as a role of protecting the first light shielding layer 6, for example, a role of protecting the first light shielding layer 6 from corrosion due to moisture absorption, or a possibility that the material of the first light shielding layer 6 is altered. The role to reduce is mentioned. The first covering layer 7 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2. The first covering layer 7 covers the first light shielding layer 6.

  Examples of the constituent material of the first coating layer 7 include acrylic resins, silicone resins, rubber resins, and urethane resins. Examples of the method for forming the first coating layer 7 include a transfer printing method, a spin coating method, and a slit coating method.

  The detection wiring 8 has a role of detecting a change in capacitance generated between the first detection electrode pattern 3 and the second detection electrode pattern 4 and the finger F1. The detection wiring 8 is provided on the first light shielding layer 6. Specifically, the detection wiring 8 is provided on the coating layer 7. A plurality of detection wirings 8 are provided, and are divided into one group and the other group. One end of the detection wiring 8 included in one group is connected to the first detection electrode pattern 3, and the other end is located in the external conduction region G1. In addition, the detection wiring 8 included in the other group has one end electrically connected to the second detection electrode pattern 4 and the other end positioned in the external conduction region G1. The other end of the detection wiring 8 located in the external conduction region G1 is electrically connected to a position detection driver (not shown) via, for example, a flexible printed wiring board (not shown).

  The detection wiring 8 is made of a metal thin film so as to be hard and have high shape stability. Examples of the constituent material of the metal thin film include an aluminum film, an aluminum alloy film, a laminated film of a chromium film and an aluminum film, a laminated film of a chromium film and an aluminum alloy film, a silver film, a silver alloy film, or a gold alloy film. Can be mentioned. Examples of the method for forming the metal thin film include a sputtering method, a CVD method, and a vapor deposition method.

  For example, the conductive layer 9 has a role of causing a malfunction in the input device X1 due to the influence of static electricity. The conductive layer 9 is provided on the first light shielding layer 6. Specifically, the conductive layer 9 is provided on the first coating layer 7. In addition, the conductive layer 9 is positioned away from the detection wiring 8. Specifically, in the present embodiment, the conductive layer 9 is positioned so as to surround the input region E1 and the detection wiring 8 in plan view. In addition, the planar view shape and arrangement | positioning position of the conductive layer 9 are arbitrary, and can be suitably changed according to the embodiment of the input device X1. As a constituent material and a forming method of the conductive layer 9, the same material as that of the detection wiring 8 can be used.

  Here, as shown in FIGS. 4 and 5, the opening 6 a is provided in a portion of the first light shielding layer 6 located between the detection wiring 8 and the conductive layer 9 in plan view. For this reason, possibility that the detection accuracy of input device X1 will fall can be reduced.

Specifically, the first light shielding layer includes a coloring material for the purpose of shielding the non-input area. Here, there is a possibility that the coloring material has conductivity even if it is slight. When the first light shielding layer has conductivity, there is a possibility that impedance is generated between the detection wiring located on the first light shielding layer and the conductive layer via the first light shielding layer. Here, in the input device, for example, by applying a predetermined voltage to the second detection electrode pattern, the input operation position in the user is detected by measuring the current value output from the first detection electrode pattern. . In such a case, if an impedance is generated between the detection wiring and the conductive layer, the current value cannot be accurately measured, and the detection accuracy may be reduced. In particular, there is a high possibility that a potential difference is generated between the detection wiring and the conductive layer, and the impedance is likely to be generated due to the potential difference.

  Therefore, in the input device X1, the first light shielding layer 6 is provided with an opening 6a in a portion located between the detection wiring 8 and the conductive layer 9 in plan view. For this reason, it is possible to reduce the possibility that an impedance is generated between the detection wiring 8 and the conductive layer 9 via the first light shielding layer 6. Therefore, the possibility that the detection accuracy of the input device X1 is lowered due to the influence of the first light shielding layer 6 can be reduced.

  As in the present embodiment, the opening 6a is preferably located in the region G2 between the conductive layer 9 and the detection wiring 8 located on the side closest to the conductive layer 9 in plan view. Here, impedance is easily generated between the detection wiring 8 located on the side farthest from the conductive layer 9 among the plurality of detection wirings 8 and the conductive layer 9 via the first light shielding layer 6. When the opening 6a is located in the region G2 as in the present embodiment, the possibility that an impedance is generated between the detection wiring 8 and the conductive layer 9 can be further reduced. In this specification, the region G2 refers to the outer edge of the conductive layer 9 that is farthest from the detection wiring 8 in plan view and the detection wiring 8 that is closest to the conductive layer 9 in plan view. Of these, the region between the outer edge located on the side farthest from the conductive layer 9 is indicated. For this reason, the opening 6a may overlap with the conductive layer 9 in plan view. Further, the opening 6 a may overlap with the detection wiring 8 positioned on the side closest to the conductive layer 9 in plan view.

  Further, as in this embodiment, the separation distance D1 between the conductive layer 9 and the detection wiring 8 located on the side closest to the conductive layer 9 is larger than the separation distance D2 between the detection wirings 8 adjacent to each other. It is preferable. Here, when the separation distance D <b> 1 is relatively small, an impedance is easily generated between the conductive layer 9 and the detection wiring 8 located on the side closest to the conductive layer 9 via the first light shielding layer 6. When the separation distance D1 is larger than the separation distance D2 as in the present embodiment, the possibility that an impedance is generated between the detection wiring 8 and the conductive layer 9 can be further reduced. In this specification, the separation distance D1 refers to the shortest distance between the conductive layer 9 and the detection wiring 8 located on the side closest to the conductive layer 9 in plan view. In this specification, the separation distance D2 indicates the shortest distance between the detection wirings 8 adjacent to each other in plan view.

  Further, as in the present embodiment, the conductive layer 9 is preferably located on the opposite side of the first detection electrode pattern 3 and the second detection electrode pattern 4 with the detection wiring 8 interposed therebetween. In other words, the conductive layer 9 is preferably located on the side farther from the input region E1 than the detection wiring 8. According to such a configuration, when the input device X1 is incorporated in the display device Y1 (see FIG. 6), static electricity is generated in the first housing 100 via the first housing 100 and the input device X1. When jumping in, the possibility that the static electricity enters the detection wiring 8 can be reduced.

In addition, as in the present embodiment, the conductive layer 9 is preferably positioned so as to surround the input region E1. When the conductive layer 9 is positioned so as to surround the input region E1, the possibility of static electricity entering the first detection electrode pattern 3 and the second detection electrode pattern 4 positioned in the input region E1 can be reduced. . Note that the conductive layer 9 may not completely surround the input region E1. In the present embodiment, one end and the other end of the conductive layer 9 are separated from each other and are located in the external conduction region G1. That is, the input region E1 is surrounded by the conductive layer 9 and the external conduction region G1. Even in such a case, the conductive layer 9 is in the input region E1.
It will be located to surround.

  The conductive layer 9 is preferably set to a reference potential. When the conductive layer 9 is set to the reference potential, static electricity that enters from the outside of the input device X1 is likely to jump into the conductive layer 9. For this reason, it is possible to further reduce the possibility of malfunction in the input device X1 due to the influence of static electricity. In the present embodiment, one end and the other end of the conductive layer 9 are located in the external conduction region G1. Therefore, one end and the other end of the conductive layer 9 can be connected to the reference potential via, for example, a flexible printed wiring board connected to the other end of the detection wiring 8.

  The second coating layer 10 has a role of protecting the detection wiring 8 and the conductive layer 9. The role of protecting the detection wiring 8 and the conductive layer 9 includes, for example, the role of protecting from corrosion due to moisture absorption. The second coating layer 10 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2. Specifically, the second coating layer 10 is located on the first coating layer 7. The second coating layer 10 covers the detection wiring 8 and the conductive layer 9. The second coating layer 10 may cover the detection wiring 8 and may not cover the conductive layer 9. When the second coating layer 10 does not cover the conductive layer 9, static electricity easily enters the conductive layer 9. For this reason, it is possible to further reduce the possibility of malfunction in the input device X1 due to the influence of static electricity. Further, the second coating layer 10 is not provided in the external conduction region G1. As the constituent material and the forming method of the second coating layer 10, the same materials as those of the first coating layer 7 can be used.

  The first protective layer 11 has a role of protecting the first detection electrode pattern 3 and the second detection electrode pattern 4. Here, the role of protecting the first detection electrode pattern 3 and the second detection electrode pattern 4 includes, for example, the role of protecting from corrosion due to moisture absorption, or the role of preventing malfunction due to mixing of static electricity. The first protective layer 11 is provided on the second main surface 2B of the base 2 corresponding to a part of the input area E1 and the non-input area E2. The first protective layer 11 covers the first detection electrode pattern 3 and the second detection electrode pattern 4. Examples of the constituent material of the first protective layer 11 include an inorganic material having translucency. Examples of the light-transmitting inorganic material include silicon dioxide and silicon nitride. Examples of the method for forming the first protective layer 11 include a sputtering method, an ion plating method, a screen printing method, and an ink jet printing method.

  The second protective layer 12 has a role of protecting the first main surface 2A of the base 2 from being damaged by contact with the user's finger F1. The second protective layer 12 is provided over the entire surface on the first main surface 2A of the base 2 corresponding to the input area E1 and the non-input area E2 via an adhesive material (not shown). Note that the second protective layer 12 may not be provided over the entire surface of the base 2 on the first main surface 2A. That is, the second protective layer 12 may be provided only on the first main surface 2A of the base 2 corresponding to the input region E1. The second protective layer 12 has translucency. Examples of the constituent material of the second protective layer 12 include glass or plastic.

    Next, the detection principle of the input device X1 will be described.

A position detection driver (not shown) is electrically connected to the detection wiring 8 via, for example, a flexible printed wiring board. Further, the position detection driver includes a power supply device. The power supply device may be separate from the position detection driver. The power supply device supplies a voltage to the first detection electrode pattern 3 and the second detection electrode pattern 4 via the detection wiring 8. The position detection driver always detects a current value corresponding to the voltage supplied by the power supply device. Here, when the finger F1, which is a conductor, approaches, contacts, or presses the first main surface 2A of the base 2 corresponding to the input region E1 via the second protective layer 12, the finger F1 and the first detection electrode pattern A capacitance is generated between the third detection electrode pattern 3 and the second detection electrode pattern 4. When capacitance is generated between the finger F1 and the first detection electrode pattern 3 and the second detection electrode pattern 4, the current value detected by the position detection driver changes. The input device X1 detects an input position where the user has performed an input operation by a combination of the first detection electrode pattern 3 and the second detection electrode pattern 4 in which the current value detected by the position detection driver has reached a predetermined value. In this way, the input device X1 can detect the input position.

  As described above, the input device X1 can reduce the possibility that the detection accuracy is lowered.

  Next, a display device Y1 including the input device X1 will be described with reference to FIG.

  As illustrated in FIG. 6, the display device Y1 according to the present embodiment includes an input device X1, a first housing 100, a display panel 200, a backlight 300, and a circuit board 400.

  The first housing 100 has a role of supporting the input device X1. The first casing 100 has a role of accommodating the display panel 200, the backlight 300, and the circuit board 400. The first housing 100 has a first support portion 101. The first support portion 101 has a role of supporting the input device X1 from the second main surface 2B side of the base 2.

  Examples of the constituent material of the first housing 100 include a resin such as polycarbonate, or a metal such as stainless steel and aluminum.

  The display panel 200 has a role of displaying an image. The display panel 200 includes an upper substrate 201, a lower substrate 202, a liquid crystal layer 203, and a sealing member 204.

  The upper substrate 201 is disposed to face the second main surface 2B of the base 2 of the input device X1. Note that the input device X1 may be provided on the upper substrate 201 via a fixing member. Examples of the fixing member include a double-sided tape, a thermosetting resin, an ultraviolet curable resin, or a stopper such as a screw. The lower substrate 202 is disposed to face the upper substrate 201. Examples of the constituent material of the upper substrate 201 and the lower substrate 202 include a transparent resin material such as glass or plastic.

  The liquid crystal layer 203 is a display member layer for displaying an image, and is interposed between the upper substrate 201 and the lower substrate 202. Specifically, the liquid crystal layer 203 is sealed in a region between the upper substrate 201 and the lower substrate 202 by the upper substrate 201, the lower substrate 202, and the sealing member 204. The display panel 200 according to the present embodiment includes the liquid crystal layer 203 as a display member layer, but is not limited thereto. Instead of the liquid crystal layer 203, a plasma generation layer, an organic EL layer, or the like may be provided.

  The backlight 300 has a role of entering light over the entire lower surface of the display panel 200. The backlight 300 is disposed behind the display panel 200. The backlight 300 includes a light source 301 and a light guide plate 302. The light source 301 is a member that plays a role of emitting light toward the light guide plate 302, and is composed of an LED (Light Emitting Diode). Note that the light source 301 does not need to be configured by an LED, and may be configured by, for example, a cold cathode fluorescent lamp, a halogen lamp, a xenon lamp, or an EL (Electro-Luminescence). The light guide plate 302 is a member that plays a role of guiding light from the light source 301 substantially uniformly over the entire lower surface of the display panel 200. Note that in the case where a display panel using self-luminous elements is used instead of the display panel 200, the backlight 300 may not be provided.

  The circuit board 400 has a role of supporting electronic components such as a position detection driver of the input device X1, a control circuit that controls the display panel 200 and the backlight 300, a resistor, or a capacitor, for example. The circuit board 400 is disposed behind the backlight 300. The control circuit arranged on the circuit board 400 is electrically connected to the display panel 200 and the backlight 300 by a flexible printed wiring board (not shown).

  As described above, the display device Y1 can input various kinds of information by performing an input operation on the input region E1 of the input device X1 while seeing through the display panel 200 via the input device X1.

  Further, when inputting various types of information, the input device X1 may be provided with a function of presenting various tactile sensations such as a feeling of pressing, a feeling of tracing, and a feeling of touch to the user who has input the information. In this case, the base body 2 in the input device X1 includes one or more vibrating bodies (for example, piezoelectric elements), and when a predetermined input operation or a predetermined pressing load is detected, the vibrating body is detected at a predetermined frequency. It can be realized by vibrating.

  As described above, since the display device Y1 includes the input device X1, it is possible to reduce the possibility that the detection accuracy is lowered.

  Next, the mobile terminal Z1 including the display device Y1 will be described with reference to FIG. FIG. 7 is a perspective view of the portable terminal Z1 including the display device Y1.

  As shown in FIG. 7, the mobile terminal Z1 according to the present embodiment is a smartphone terminal. The mobile terminal Z1 is not limited to a smartphone terminal, and may be an electronic device such as a mobile phone, a tablet terminal, or a PDA (Personal Digital Assistant).

  The portable terminal Z1 includes a display device Y1, an audio input unit 501, an audio output unit 502, a key input unit 503, and a second housing 504.

  The voice input unit 501 has a role of inputting a user's voice and the like, and includes a microphone or the like. The audio output unit 502 has a role of outputting audio from the other party, and is configured by an electromagnetic speaker or a piezoelectric speaker. The key input unit 503 is composed of mechanical keys. The key input unit 503 may be an operation key displayed on the display screen. The second housing 504 has a role of accommodating the display device Y1, the audio input unit 501, the audio output unit 502, and the key input unit 503. As a constituent material of the second housing 504, the same material as that of the first housing 100 may be used. Note that the second housing 504 and the first housing 100 of the display device Y1 may be integrated.

  In addition, the mobile terminal Z1 may include a digital camera function unit, a one-segment broadcasting tuner, a short-range wireless communication unit such as an infrared communication function unit, a wireless LAN module, various interfaces, and the like according to necessary functions. However, illustration and description of these details are omitted.

  As described above, since the mobile terminal Z1 includes the display device Y1, it is possible to reduce the possibility that the detection accuracy is lowered.

  Here, the display device Y1 is not limited to the portable terminal Z1 described above, but includes various devices such as an electronic notebook, a personal computer, a copying machine, a game terminal device, a television, a digital camera, or a programmable display used for industrial applications. The electronic device may be provided.

  The above-described embodiment shows a specific example of the embodiment of the present invention, and various modifications are possible. Hereinafter, some main modifications will be described.

[Modification 1]
FIG. 8 is a plan view illustrating a schematic configuration of the input device X2 according to the first modification. 9 is a cross-sectional view taken along the line IV-IV shown in FIG. FIG. 10 is an enlarged plan view of a region A2 surrounded by a one-dot chain line shown in FIG. 8 to 10, components having the same functions as those in FIGS. 1, 4, and 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 8 to 10, the input device X <b> 2 includes a first light shielding layer 21 instead of the first light shielding layer 6 included in the input device X <b> 1.

  The first light shielding layer 21 has the same role as the first light shielding layer 6. The first light shielding layer 21 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2. The first light shielding layer 21 has a plurality of openings 21a. A part of the plurality of openings 21a is located between the conductive layer 9 and the detection wiring 8 located on the side closest to the conductive layer 9 in plan view. The remaining portions of the plurality of openings 21a are located between the detection wirings 8 adjacent to each other.

  Here, there is a possibility that an impedance may be generated between the detection wirings 8 adjacent to each other via the first light shielding layer 21. In Modification 1, since the opening 21a is located between the detection wirings 8 adjacent to each other in plan view, the possibility that an impedance is generated between the detection wirings 8 may be reduced. it can.

  Note that, as in the first modification, the planar view width D3 of the opening 21a located between the detection wirings 8 adjacent to each other is the detection wiring located on the side closest to the conductive layer 9 and the conductive layer 9. 8 is smaller than the planar view width D4 of the opening 21a located between the two. Here, the detection wiring 8 is located closer to the input region E1 than the conductive layer 9. That is, the opening 21a located between the detection wirings 8 adjacent to each other has an amount of light incident from the backlight 300 when the input device X2 is incorporated in the display device Y1 instead of the input device X1. It will be located in the vicinity of the relatively large input area E1. In this embodiment, since the planar view width D3 is smaller than the planar view width D4, the light may be visually recognized by the user through the opening 21a located between the detection wirings 8 adjacent to each other. Can be reduced.

[Modification 2]
FIG. 11 is a plan view illustrating a schematic configuration of the input device X3 according to the second modification. 12 is a cross-sectional view taken along line VV shown in FIG. FIG. 13 is an enlarged plan view of a region A3 surrounded by a one-dot chain line shown in FIG. 11 to 13, components having the same functions as those in FIGS. 1, 4, and 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 11 to 13, the input device X <b> 3 further includes a decoration layer 31.

  The decoration layer 31 has a role of decorating the non-input area E2. The decorative layer 31 is provided on the first main surface 2A of the base 2 corresponding to the non-input area E2. The decorative layer 31 is located between the second main surface 2 </ b> B of the base 2 and the second protective layer 12. In addition, the decoration layer 31 does not need to be located between the 2nd main surface 2B of the base | substrate 2, and the 2nd protective layer 12, and may be contained in the 2nd protective layer 12, for example. Examples of the constituent material of the decoration layer 31 include the same materials as those of the first light shielding layer 6. In addition, the decoration layer 31 may have a different color from the first light shielding layer.

  Here, the decoration layer 31 overlaps the opening 6a in plan view. For this reason, when the input device X3 is incorporated in the display device Y1 instead of the input device X1, the possibility that the inside of the display device Y1 is visually recognized through the opening 6a can be reduced.

[Modification 3]
FIG. 14 is a plan view illustrating a schematic configuration of the input device X4 according to the third modification. 15 is a cross-sectional view taken along the line VI-VI shown in FIG. FIG. 16 is an enlarged plan view of a region A4 surrounded by a one-dot chain line shown in FIG. 14 to 16, the same reference numerals are given to the components having the same functions as those in FIGS.

  As shown in FIGS. 14 to 16, the input device X <b> 4 further includes a second light shielding layer 41.

  The second light shielding layer 41 is provided on the second coating layer 10 corresponding to the non-input area E2. Specifically, the second light shielding layer 41 is provided on the detection wiring 8 and the conductive layer 9. The constituent material of the second light shielding layer 41 may be the same as that of the first light shielding layer 6.

  Here, the 2nd light shielding layer 41 has overlapped with the opening part 6a by planar view. For this reason, when the input device X4 is incorporated in the display device Y1 instead of the input device X1, the possibility that the inside of the display device Y1 is visually recognized through the opening 6a can be reduced.

  As in Modification 3, the distance D5 between the second light shielding layer 41 and the detection wiring 8 is preferably larger than the distance D6 between the first light shielding layer 6 and the detection wiring 8. When the separation distance D5 is larger than the separation distance D6, even if the coloring material contained in the second light shielding layer 41 has conductivity, the detection wiring 8 and the conductive layer 9 are interposed via the second light shielding layer 41. It is possible to reduce the possibility of impedance occurring between the two.

  The second light shielding layer 41 preferably has substantially the same color as the first light shielding layer 6. If the second light shielding layer 41 has substantially the same color as the first light shielding layer 6, the boundary between the region where the first light shielding layer 6 is located and the region where the opening 6a is located is viewed in plan view. The possibility can be reduced. For this reason, the designability improves. For example, in the Munsell color system, the hue symbols of the hue, lightness, and saturation have the same hue symbol, and the numerical values of the hue, lightness, and saturation are within one. Can be defined as

[Modification 4]
In addition, although this specification specifically explained about said embodiment and the modifications 1-3, not only this but the matter separately described in said embodiment and the modifications 1-3 was suitably mentioned. Combination examples are also described. In other words, the input device according to the present invention is not limited to the input devices X1 to X4, and includes an input device that appropriately combines the matters individually described in the above embodiment and the first to third modifications.

  Moreover, although this embodiment demonstrated the display apparatus Y1 provided with the input device X1, it may replace with the input device X1 and may employ | adopt input devices X2-X4. Moreover, although this embodiment demonstrated portable terminal Z1 provided with input device X1, it may replace with input device X1 and may employ input devices X2-X4.

X1 to X4 Input device Y1 Display device Z1 Portable terminal (electronic device)
2 Base body 2A First main surface 2A
2B 2nd main surface 2B
3a 1st detection electrode 4a 2nd detection electrode 6, 21 1st light shielding layer 6a, 21a Opening part 8 Detection wiring 9 Conductive layer 31 Decoration layer 41 2nd light shielding layer 200 Display panel 504 2nd housing | casing (housing)

Claims (13)

A substrate;
A detection electrode provided on the substrate;
A first light shielding layer provided on the substrate;
A detection wiring provided on the first light shielding layer and electrically connected to the detection electrode;
A conductive layer provided on the first light shielding layer and positioned away from the detection wiring;
The first light shielding layer is an input device in which an opening is provided in a portion located between the detection wiring and the conductive layer in plan view.   The input device according to claim 1, wherein the conductive layer is located on the opposite side of the detection electrode with the detection wiring interposed therebetween. A plurality of the detection wirings are provided,
The input device according to claim 1, wherein the opening is located between the conductive layer and the detection wiring located on a side closest to the conductive layer in a plan view.   The input device according to claim 3, wherein a separation distance between the conductive layer and the detection wiring located on a side closest to the conductive layer is larger than a separation distance between the detection wirings adjacent to each other.   The input device according to claim 3, wherein the opening is located between the detection wirings adjacent to each other in plan view. The base has a first main surface and a second main surface located on the opposite side of the first main surface;
A decorative layer provided on the first main surface;
The first light shielding layer, the detection electrode, the detection wiring, and the conductive layer are provided on the second main surface,
The input device according to any one of claims 1 to 5, wherein the decoration layer overlaps the opening in a plan view. A second light-shielding layer located on the detection wiring and the conductive layer and overlapping the opening in plan view;
The input device according to claim 1, wherein a separation distance between the second light shielding layer and the detection wiring is larger than a separation distance between the first light shielding layer and the detection wiring.   The input device according to claim 1, wherein the conductive layer is set to a reference potential.   The input device according to claim 1, wherein the first light shielding layer includes a conductive coloring material. The detection electrode is located in the input region;
The light shielding layer, the detection wiring, and the conductive layer are located in a non-input region located outside the input region,
The input device according to claim 1, wherein the conductive layer is positioned so as to surround the input region.   The input device according to claim 10, wherein the conductive layer is positioned so as to surround the detection wiring. An input device according to claims 1 to 11,
A display panel disposed opposite to the input device. A display device according to claim 12,
An electronic device comprising a housing in which the display device is accommodated.