JP2014174738A - 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 the possibility of reducing the detection accuracy.SOLUTION: The input device X1 includes: a substrate 2 having a second principal surface 2B; a first light blocking layer 3 disposed on the second principal surface 2B of the substrate 2; a first detection electrode 5a that is disposed on the second principal surface 2B of the substrate 2 and whose a part 5c is located on the first light blocking layer 3; and wiring 8 for detection that is disposed on the first light blocking layer 3 and connected to the first detection electrode 5a. At least one of the part 5c of the first detection electrode 5a and the first light blocking layer 3 corresponding to the part 5c has an opening 5d.

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 (see, for example, Patent Document 1). A part of the detection electrode is located on the light shielding layer, and is connected to the detection wiring on the light shielding layer.

JP 2011-90443 A

  By the way, in the input device described above, a part of the detection electrode and the light shielding layer are overlapped in plan view. Here, the light shielding layer includes, for example, a coloring material. The coloring material includes, for example, a conductive material. For this reason, an impedance is generated in a part of the detection electrode due to the influence of the light shielding layer, and there is a possibility that the detection accuracy is lowered.

  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 includes a base having a main surface, a first light-shielding layer provided on the main surface of the base, and provided on the main surface of the base. Comprises a detection electrode located on the first light shielding layer, a detection wiring provided on the first light shielding layer and connected to the detection electrode, the part of the detection electrode, and At least one of the first light shielding layers corresponding to the part is provided with an opening.

  One aspect of the input device of the present invention includes a base having a main surface, a first light-shielding layer provided on the main surface of the base, and provided on the main surface of the base. Is provided on the main surface of the substrate, and a part thereof is located on the first light shielding layer, and the first detection electrode is disposed on the first light shielding layer. A second detection electrode adjacent to each other; and a plurality of detection wirings provided on the first light shielding layer and connected to the first detection electrode and the second detection electrode, In one light shielding layer, an opening is provided between the part of the first detection electrode and the part of the second detection electrode in plan view.

  One aspect of the display device of the present invention includes the input device according to the present invention, a display panel disposed to face the input device, and a housing in which the display panel is accommodated.

  One embodiment of the electronic device of the present invention includes the display device according to the present invention.

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 the figure which showed the other example of the input device which concerns on this embodiment, Comprising: It is the figure which showed the same part as FIG. 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. 9 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. 12 was expanded. 10 is a plan view illustrating a schematic configuration of an input device according to Modification 3. FIG. It is 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. 15 was expanded. 10 is a plan view showing a schematic configuration of an input device according to Modification 4. FIG. It is the VII-VII sectional view taken on the line shown in FIG. It is the top view to which area | region A5 enclosed with the dashed-dotted line shown in FIG. 18 was expanded. 10 is a plan view illustrating a schematic configuration of an input device according to Modification Example 5. FIG. It is the VIII-VIII sectional view taken on the line shown in FIG. It is the top view to which area | region A6 enclosed with the dashed-dotted line shown in FIG. 21 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 FIG. 1, the input device X1 according to the present embodiment is a projected capacitive touch panel, and has an input area E1 and a non-input area E2. 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. In the present embodiment, the non-input area E2 refers to the entire area where the first light shielding layer 3 is located in plan view. In the present embodiment, the non-input area E2 is located outside the input area E1 so as to surround the input area E1, but is not limited thereto, and may be located in the input area E1.

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

As shown in FIGS. 1 to 5, the input device X1 includes a base 2, a first light shielding layer 3, a first protective layer 4, a first detection electrode pattern 5, a second detection electrode pattern 6, an insulator 7, and a detection device. The wiring 8, the second protective layer 9, and the protective sheet 10 are provided. In FIG. 1, the insulator 7 is not shown for convenience of explanation. 5 shows only the first light shielding layer 3, the first detection electrode pattern 5, and the second detection electrode pattern 6 for convenience of explanation.

  The base 2 has a role of supporting each member described above. The base 2 has a first main surface 2A, a second main surface 2B, and an end surface 2C. 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. The end surface 2C is located between the first main surface 2A and the second main surface 2B. In the present embodiment, the base body 2 has a substantially rectangular shape in plan view. For this reason, there are four end faces 2C corresponding to the four sides of the base 2 in plan view. In addition, the base | substrate 2 may be elliptical shape or polygonal shape in planar view, for example, and the shape is arbitrary.

  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 light shielding layer 3 has a role of shielding the non-input area E2. For this reason, the 1st light shielding layer 3 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 3 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2. Specifically, the first light shielding layer 3 is positioned so as to surround the input region E1 in plan view. Examples of the constituent material of the first light shielding layer 3 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. Note that the first light shielding layer 3 may have a hue other than black. Examples of the method for forming the first light shielding layer 3 include a screen printing method, a sputtering method, a CVD (Chemical Vapor Deposition) method, and a vapor deposition method.

  The first protective layer 4 has a role of protecting the first light shielding layer 3. Here, as a role of protecting the first light shielding layer 3, for example, a role of protecting the first light shielding layer 3 from corrosion due to moisture absorption, or a possibility that the material of the first light shielding layer 3 is altered. The role to reduce is mentioned. The first protective layer 4 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2, and covers the first light shielding layer 3. Examples of the constituent material of the first protective layer 4 include a transparent resin material. Examples of the transparent resin material include acrylic resins, silicone resins, rubber resins, and urethane resins. Examples of the method for forming the first protective layer 4 include a transfer printing method, a spin coating method, and a slit coating method.

  The first detection electrode pattern 5 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 the long side of the base 2 in plan view. It has a role of detecting the input position in the direction (Y direction in FIG. 1). A plurality of first detection electrode patterns 5 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 5 includes a plurality of first detection electrodes 5a and a plurality of first connection wirings 5b.

The 1st detection electrode 5a has a role which generate | occur | produces an electrostatic capacitance between user's fingers F1. A plurality of first detection electrodes 5a are provided side by side in the short side direction (X direction in FIG. 1) of the base 2 in plan view. In the present embodiment, the first detection electrode 5a has a substantially rhombus shape in plan view. First
The connection wiring 5b has a role of electrically connecting the first detection electrodes 5a. The first connection wiring 5 b is provided between the first detection electrodes 5 a adjacent to each other in the first detection electrode pattern 5.

  Here, among the plurality of first detection electrodes 5 a included in the first detection electrode pattern 5, the first detection electrode 5 a located on one end side (left side in FIG. 1) is located on the first light shielding layer 3. Part 5c. Specifically, the first detection electrode 5 a located on one end side is provided from the input region E <b> 1 to the non-input region E <b> 2 and is located on the first protective layer 4. That is, a part 5c of the first detection electrode 5a overlaps the first light shielding layer 3 in plan view. In the present embodiment, among the plurality of first detection electrodes 5a included in the first detection electrode pattern 5, only the first detection electrode 5a located on one end side is located from the input area E1 to the non-input area E2. However, it is not limited to this. Among the plurality of first detection electrodes 5a included in the first detection electrode pattern 5, the first detection electrode 5a located on the other end side (the right side in FIG. 1) extends from the input area E1 to the non-input area E2. The first light shielding layer 3 may partially overlap in plan view.

  An opening 5d is provided in a part 5c of the first detection electrode 5a. In the present embodiment, the opening 5d is provided in a substantially triangular shape so as to be along the outer edge of the part 5c in plan view, but is not limited thereto. The arrangement position, the plan view shape, and the number of the openings 5d can be changed as appropriate within the scope of the effects of the present invention. The reason why the opening 5d is provided will be described later.

  The second detection electrode pattern 6 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 X direction. Have A plurality of second detection electrode patterns 6 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 6 includes a second detection electrode 6a and a second connection wiring 6b.

  The second detection electrode 6a has a role of generating a capacitance with the user's finger F1. A plurality of second detection electrodes 6a are provided side by side in the Y direction. In the present embodiment, the second detection electrode 6a has a substantially rhombus shape in plan view. The second connection wiring 6b has a role of electrically connecting the second detection electrodes 6a. The second connection wiring 6b is provided on the insulator 7 across the insulator 7 so as to be electrically insulated from the first connection wiring 5b between the second detection electrodes 6a adjacent to each other. Here, the insulator 7 is provided on the second main surface 2B of the base 2 so as to cover the first connection wiring 5b. Examples of the constituent material of the insulator 7 include transparent resins such as acrylic resin, epoxy resin, silicone resin, silicon dioxide, or silicon nitride.

  In the present embodiment, the plurality of second detection electrodes 6a included in the second detection electrode pattern 6 are all located on the second main surface 2B of the base 2 corresponding to the input region E1, but this is not limitative. Absent. Among the second detection electrodes 6a included in the second detection electrode pattern 6, for example, the second detection electrode 6a located at one end (the lower side in the drawing in FIG. 1) or the other end (the upper side in the drawing in FIG. 1) , A part may be located on the first light shielding layer 3 corresponding to the non-input area E2. In such a case, it is preferable that an opening is provided in the part as in the part of the first detection electrode 5a.

  As a constituent material of the first detection electrode pattern 5 and the second detection electrode pattern 6, a conductive member having translucency can be used. 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 of forming the first detection electrode pattern 5 and the second detection electrode pattern 6, for example,
Sputtering, vapor deposition, or CVD (Chemical Vapor Deposition)
) Method to form a film on the second main surface 2B of the substrate 2. And the photosensitive resin is apply | coated to the surface of this film | membrane, the 1st detection electrode pattern 5 and the 2nd detection electrode pattern 6 are formed by patterning a film | membrane through an exposure, image development, and an etching process.

  The detection wiring 8 has a role of detecting a change in capacitance generated between the first detection electrode pattern 5 and the second detection electrode pattern 6 and the finger F1. A plurality of detection wirings 8 are provided on the first protective layer 4. The detection wiring 8 overlaps the first light shielding layer 3 in plan view. For this reason, possibility that the wiring 8 for a detection will be visually recognized by a user can be reduced. The plurality of detection wirings 8 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 5, 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 6 and the other end positioned in the external conduction region G1. The detection wiring 8 is electrically connected to a position detection driver (not shown) via a flexible printed wiring board (not shown) or the like in the external conduction region G1.

  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.

  Thus, in the input device X1, the part 5c of the first detection electrode 5a is located on the first light shielding layer 3, and is connected to the detection wiring 8 on the first light shielding layer 3. . In addition, an opening 5d is provided in a part 5c of the first detection electrode 5a. For this reason, possibility that detection accuracy will fall can be reduced.

  Specifically, a part of the first detection electrode is generated, for example, to relatively increase the connection area with the detection wiring or between the second main surface 2B of the base and the first light shielding layer. In order to reduce the possibility that the first detection electrode pattern is disconnected due to the step, the first detection electrode pattern is located on the first light shielding layer. 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 in a part of the first detection electrode due to the influence of the first light shielding layer. Here, in the input device, for example, an input operation position in the user is detected by measuring a current value when a predetermined voltage is applied to the first detection electrode pattern. If impedance occurs in a part of the first detection electrode, the current value cannot be measured accurately, and the detection accuracy may be reduced.

  Therefore, in the input device X1, an opening 5d is provided in a part 5c of the first detection electrode 5a. For this reason, the area of a region where the first detection electrode 5a part 5c and the first light shielding layer 3 overlap can be relatively reduced in plan view. Therefore, it is possible to reduce the possibility that impedance is generated in the part 5c of the first detection electrode 5a.

Note that, as in the present embodiment, it is preferable that the entire opening 5d is located at a part 5c of the first detection electrode 5a. Specifically, the entire opening 5d is preferably located in a region where a part 5c of the first detection electrode 5a and the first light shielding layer 3 overlap in plan view. If the entire opening 5d is positioned at a part 5c of the first detection electrode 5a, the opening 5d is not positioned at the boundary between the input area E1 and the non-input area E2. For this reason, the planar view width | variety of the 1st detection electrode 5a located on the said boundary can be made relatively large. Therefore, the possibility of disconnection in the first detection electrode pattern 5 due to the step generated between the second main surface 2B of the base 2 and the first light shielding layer 3 can be reduced.

  Further, as in this embodiment, the distance D1 between the outer edge of the opening 5d and the outer edge of the part 5c of the first detection electrode 5a in plan view is larger than the width D2 of the first connection wiring 5b. Is preferred. When the separation distance D1 is larger than the width D2, it is possible to reduce the possibility that the resistance value is partially increased in the part 5c of the first detection electrode 5a. For this reason, when static electricity mixes in the detection wiring 8 connected to the first detection electrode pattern 5, for example, the possibility that the part 5c of the first detection electrode 5a is burned out can be reduced. The “separation distance D1” can be, for example, the shortest distance between the outer edge of the opening 5d in plan view and the outer edge of the part 5c of the first detection electrode 5a. The “width D2” can be, for example, the shortest width of the first connection wiring 5b in plan view.

  In the present embodiment, the detection wiring 8 is connected to a part 5c of the first detection electrode 5a. Specifically, since the first detection electrode 5a has a substantially rectangular shape in plan view, it has four corners. The detection wiring 8 is connected to a corner included in a part 5c of the first detection electrode 5a. Here, as shown in FIG. 6, a part 5c of the first detection electrode 5a may be formed in a substantially rectangular shape in plan view. In such a case, the detection wiring 8 can be connected to one side of the part 5c of the first detection electrode 5a in plan view. For this reason, the connection width between the part 5c of the first detection electrode 5a and the detection wiring 8 in a plan view can be relatively increased. Therefore, it is possible to reduce the possibility of disconnection between the part 5c of the first detection electrode 5a and the detection wiring 8.

  The second protective layer 9 has a role of protecting the detection wiring 8. As a role of protecting the detection wiring 8, for example, a role of protecting against corrosion due to moisture absorption, or a role of preventing malfunction due to mixing of static electricity. The second protective layer 9 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2. Specifically, the second protective layer 9 is located on the first protective layer 4 and covers the detection wiring 8. The second protective layer 9 covers a part 5c of the first detection electrode 5a. Note that the second protective layer 9 is not provided in the external conduction region G1. As a constituent material and a forming method of the second protective layer 9, the same materials as those of the first protective layer 4 can be used.

  Note that, as in the present embodiment, the second protective layer 9 is preferably located also in the opening 5d. Specifically, it is preferable that the second protective layer 9 is partially embedded in the opening 5d. If the second protective layer 9 is also located in the opening 5d, the possibility that the second protective layer 9 is peeled off from the first protective layer 4 due to the anchor effect can be reduced.

  The protective sheet 10 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 protective sheet 10 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 protective sheet 10 may not be provided over the entire surface of the base 2 on the first main surface 2A. That is, the protective sheet 10 may or may not be provided only on the first main surface 2A of the base 2 corresponding to the input area E1. Examples of the constituent material of the protective sheet 10 include glass or plastic.

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

The position detection driver is electrically connected to the detection wiring 8 via a flexible printed wiring board or the like. 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 5 and the second detection electrode pattern 6 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 protective sheet 10, the finger F1 and the first detection electrode pattern 5 and A capacitance is generated between the second detection electrode pattern 6 and the second detection electrode pattern 6. When capacitance is generated in the first detection electrode pattern 5 and the second detection electrode pattern 6, 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 based on a combination of the first detection electrode pattern 5 and the second detection electrode pattern 6 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, the display device Y1 including the input device X1 will be described with reference to FIG.

  As illustrated in FIG. 7, 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 casing 100 has a role of supporting the input device X1 and 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. 8 is a perspective view of the portable terminal Z1 including the display device Y1.

  As shown in FIG. 8, 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. 9 is a plan view illustrating a schematic configuration of the input device X2 according to the first modification. FIG. 10 is a cross-sectional view taken along the line IV-IV shown in FIG. FIG. 11 is an enlarged view of a region A2 surrounded by a one-dot chain line shown in FIG. 9 to 11, 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. 9 to 11, the input device X2 includes a first detection electrode pattern 21 and a first light shielding layer 22 instead of the first detection electrode pattern 5 and the first light shielding layer 3 included in the input device X1. Yes.

  The first detection electrode pattern 21 has the same function as the first detection electrode pattern 5. A plurality of first detection electrode patterns 21 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 21 includes a plurality of first detection electrodes 21a and a plurality of first connection wirings 21b.

  A plurality of first detection electrodes 21a are provided side by side in the X direction in plan view. In the first modification, the first detection electrode 21a has a substantially rhombus shape in plan view. The first connection wiring 21b has a role of electrically connecting the first detection electrodes 21a. The first connection wiring 21 b is provided between the first detection electrodes 21 a adjacent to each other in the first detection electrode pattern 21.

  Among the plurality of first detection electrodes 21 a included in the first detection electrode pattern 21, the first detection electrode 21 a located on one end side (left side in FIG. 9) is a part located on the first light shielding layer 22. 21c. Specifically, the first detection electrode 21 a located on one end side is provided from the input region E <b> 1 to the non-input region E <b> 2 and is located on the first protective layer 4. That is, a part 21c of the first detection electrode 21a overlaps the first light shielding layer 22 in plan view.

  The first light shielding layer 22 has the same function as the first light shielding layer 3. The first light shielding layer 22 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2. Specifically, the first light shielding layer 22 is positioned so as to surround the input region E1 in plan view.

  Here, an opening 22a is provided in a portion of the first light shielding layer 22 corresponding to a part 21c of the first detection electrode 21a. Specifically, the opening 22a is provided in the first light shielding layer 22 that overlaps a part 21c of the first detection electrode 21a in plan view. For this reason, even if it is a case where the opening part is not provided in the part 21c of the 1st detection electrode 21a, possibility that an impedance will arise in the part 21c of the 1st detection electrode 21a can be reduced. In the first modification, the opening 22a is provided in a substantially triangular shape so as to follow the outer edge of the part 21c in plan view, but the present invention is not limited to this. The arrangement position, the plan view shape, and the number of the openings 22a can be changed as appropriate without departing from the spirit of the present invention.

  As in the present embodiment, it is preferable that the first protective layer 4 is also located in the opening 22a. Specifically, it is preferable that the first protective layer 4 is partially embedded in the opening 22a. When the first protective layer 4 is also located in the opening 22a, the possibility that the first protective layer 4 is peeled off from the second main surface 2B of the base 2 due to the anchor effect can be reduced.

[Modification 2]
FIG. 12 is a plan view illustrating a schematic configuration of the input device X3 according to the second modification. FIG. 13 is a cross-sectional view taken along line VV shown in FIG. FIG. 14 is an enlarged plan view of a region A3 surrounded by a one-dot chain line shown in FIG. 12 to 14, the same reference numerals are given to configurations having the same functions as those in FIGS. 9 to 11, and detailed descriptions thereof are omitted.

  As illustrated in FIGS. 12 to 14, the input device X3 further includes a second light shielding layer 31 in addition to the input device X2.

  The second light shielding layer 31 is provided on the second protective layer 9 corresponding to the non-input area E2. In the second modification, the second light shielding layer 31 has substantially the same shape as the first light shielding layer 3 in plan view. The second light shielding layer 31 is positioned so as to overlap the detection wiring 8 in plan view. Therefore, when the input device X3 is incorporated in the display device Y1 instead of the input device X1, even if the amount of light incident on the detection wiring 8 from the backlight 300 becomes relatively large, the detection device The possibility that the wiring 8 is visually recognized by the user can be reduced.

  Here, the second light shielding layer 31 is positioned so as to overlap the opening 22a 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 22a can be reduced.

  The second light shielding layer 31 may be located on the first main surface 2A of the base 2.

[Modification 3]
FIG. 15 is a plan view illustrating a schematic configuration of the input device X4 according to the third modification. 16 is a cross-sectional view taken along the line VI-VI shown in FIG. FIG. 17 is an enlarged plan view of a region A4 surrounded by a one-dot chain line shown in FIG. 15 to 17, components having the same functions as those in FIGS. 12 to 14 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As illustrated in FIGS. 15 to 17, the input device X4 includes a first light shielding layer 41 instead of the first light shielding layer 22 in the input device X3.

  The first light shielding layer 41 has the same function as the first light shielding layer 22. The first light shielding layer 41 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2. Specifically, the first light shielding layer 41 is positioned so as to surround the input area E1 in plan view.

  Here, an opening 41a is provided in a portion of the first light shielding layer 41 corresponding to a part 21c of the first detection electrode 21a. Specifically, the opening 41a is provided in the first light shielding layer 41 that overlaps a part 21c of the first detection electrode 21a in plan view. A plurality of openings 41a are provided along the outer edge of the first light shielding layer 41 in plan view. In addition, the plurality of openings 41 a are positioned so as to overlap the second light shielding layer 31 in plan view. Therefore, a portion of the first light shielding layer 41 that overlaps with a part 21c of the first detection electrode 21a functions as a gradation pattern whose color changes as the distance from the outer edge of the first light shielding layer 41 increases. Therefore, when the boundary of the 1st light shielding layer 41 and the 2nd light shielding layer 31 visually recognized from the opening part 41a is conspicuous in planar view, possibility that the design property will fall can be reduced.

In the third modification, the plurality of openings 41a are substantially circular in plan view, but are not limited thereto, and may be substantially elliptical or substantially polygonal. Moreover, in the modification 3, although the several opening part 41a is located in a line with planar view, it may be substantially meandering shape not only in this but may be arrange | positioned at random. . That is, when the plurality of openings 41a are arranged along the outer edge of the first light shielding layer 41 in plan view, a portion of the first light shielding layer 41 that overlaps a part 21c of the first detection electrode 21a is a gradation pattern. As long as it functions.

[Modification 4]
FIG. 18 is a plan view illustrating a schematic configuration of the input device X5 according to the fourth modification. FIG. 19 is a cross-sectional view taken along line VII-VII shown in FIG. FIG. 20 is an enlarged plan view of a region A5 surrounded by a one-dot chain line shown in FIG. 18 to 20, components having the same functions as those in FIGS. 1, 4, and 5 are given the same reference numerals, and detailed descriptions thereof are omitted.

  As shown in FIGS. 18 to 20, the input device X5 includes a first detection electrode pattern 51 and a first light shielding layer 52 instead of the first detection electrode pattern 5 and the first light shielding layer 3 in the input device X1. .

  The first detection electrode pattern 51 has the same function as the first detection electrode pattern 5. A plurality of first detection electrode patterns 51 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 51 includes a plurality of first detection electrodes 51a and a plurality of first connection wirings 51b.

  A plurality of first detection electrodes 51a are provided side by side in the X direction in plan view. In the first modification, the first detection electrode 51a has a substantially rhombus shape in plan view. The first connection wiring 51b has a role of electrically connecting the first detection electrodes 51a. The first connection wiring 51b is provided between the first detection electrodes 51a adjacent to each other in the first detection electrode pattern 51.

  Among the plurality of first detection electrodes 51 a included in the first detection electrode pattern 51, the first detection electrode 51 a located on one end side (the left side in FIG. 18) is a part located on the first light shielding layer 52. 51c. Specifically, the first detection electrode 51 a located on one end side is provided from the input region E <b> 1 to the non-input region E <b> 2 and is located on the first protective layer 4. That is, a part 51c of the first detection electrode 51a overlaps the first light shielding layer 52 in plan view. A first opening 51d is provided in a part 51c of the first detection electrode 51a.

  The first light shielding layer 52 has the same function as the first light shielding layer 3. The first light shielding layer 52 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2. Specifically, the first light shielding layer 52 is positioned so as to surround the input area E1 in plan view. A second opening 52a is provided in a portion of the first light shielding layer 52 corresponding to a part 51c of the first detection electrode 51a. Specifically, the second opening 52a is provided in the first light shielding layer 22 that overlaps a part 51c of the first detection electrode 51a in plan view.

  Here, in the input device X5, the first opening 51d and the second opening 52a do not overlap in plan view. For this reason, the region where the part 51c of the first detection electrode 51a and the first light shielding layer 52 overlap can be reduced, and therefore, the possibility that an impedance is generated in the part 51c of the first detection electrode 51a is further reduced. be able to. Further, since the opening area of the first opening 51d can be made relatively small, there is a possibility that the connection area between the part 51c of the first detection electrode 51a and the detection wiring 8 becomes relatively small. Can be reduced. Further, since the opening area of the second opening 52a can be made relatively small, when the input device X5 is incorporated in the display device Y1 instead of the input device X1, the display device is provided via the second opening 52a. The possibility that the inside of Y1 will be visually recognized can be reduced.

In addition, the arrangement position, the planar view shape, and the number of the first opening 51d and the second opening 52a can be changed as appropriate without departing from the spirit of the present invention.

[Modification 5]
FIG. 21 is a plan view illustrating a schematic configuration of the input device X6 according to the fifth modification. 22 is a cross-sectional view taken along line VIII-VIII shown in FIG. FIG. 20 is an enlarged plan view of a region A5 surrounded by a one-dot chain line shown in FIG. 18 to 20, components having the same functions as those in FIGS. 1, 4, and 5 are given the same reference numerals, and detailed descriptions thereof are omitted.

  As shown in FIGS. 18 to 20, the input device X6 includes a first light shielding layer 61, a first light shielding layer 61, a first detection electrode pattern 5, and a second detection electrode pattern 6 instead of the first light shielding layer 3, the first detection electrode pattern 5 and the second detection electrode pattern 6. A first detection electrode 62 and a second detection electrode 63 are provided.

  The first light shielding layer 61 has the same function as the first light shielding layer 3. The first light shielding layer 61 is provided on the second main surface 2B of the base 2 corresponding to the non-input area E2. Specifically, the first light shielding layer 61 is positioned so as to surround the input region E1 in plan view. The second light shielding layer 61 is provided with an opening 61a.

  The first detection electrode pattern 62 has the same function as the first detection electrode pattern 5. A plurality of first detection electrode patterns 62 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 62 includes a plurality of first detection electrodes 62a and a plurality of first connection wirings 62b.

  A plurality of first detection electrodes 62a are provided side by side in the X direction in plan view. In Modification 5, the first detection electrode 62a has a substantially rhombus shape in plan view, but the first detection electrodes 62a located on one end side and the other end side of the first detection electrode pattern 62 are in plan view. It is substantially triangular. The first connection wiring 62b has a role of electrically connecting the first detection electrodes 62a. The first connection wiring 62 b is provided between the first detection electrodes 62 a adjacent to each other in the first detection electrode pattern 62.

  Of the plurality of first detection electrodes 62 a, the first detection electrode 62 a located on the side close to the end surface 2 </ b> C of the base 2 has a part 62 c located on the first light shielding layer 61. Specifically, the first detection electrode 62a located on the side close to the end surface 2C of the base 2 is provided from the input region E1 to the non-input region E2, and at least a part 62c is on the first protective layer 4. Is located. That is, a part 62c of the first detection electrode 62a overlaps the first light shielding layer 61 in plan view.

  The second detection electrode pattern 63 has the same function as the second detection electrode pattern 6. A plurality of second detection electrode patterns 63 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 63 includes a plurality of second detection electrodes 63a and a plurality of second connection wirings 63b.

  A plurality of second detection electrodes 63a are provided side by side in the Y direction in plan view. In Modification 5, the second detection electrode 63a has a substantially rhombus shape in plan view, but the second detection electrodes 63a located on one end side and the other end side of the second detection electrode pattern 63 are in plan view. It is substantially triangular. The second connection wiring 63b has a role of electrically connecting the second detection electrodes 63a. The second connection wiring 63b extends across the insulator 7 so as to be electrically insulated from the first connection wiring 62b between the second detection electrodes 63a adjacent to each other in the second detection electrode pattern 63. It is provided on the body 7.

2nd detection electrode 6 located in the side close | similar to the end surface 2C of the base | substrate 2 among several 2nd detection electrode 63a.
3 a has a part 63 c located on the first light shielding layer 61. Specifically, the second detection electrode 63a located on the side close to the end face 2C of the base 2 is provided from the input region E1 to the non-input region E2, and at least a portion 63c is on the first protective layer 4. Is located. That is, a part 63c of the second detection electrode 63a overlaps the first light shielding layer 61 in plan view. Further, the second detection electrode 63a having the part 63c is positioned adjacent to the first detection electrode 62a having the part 62a in plan view.

  Here, the opening 61a is provided between a part 62c of the first detection electrode 62a and a part 63c of the second detection electrode 63a in plan view. For this reason, it is possible to reduce a possibility that an impedance is generated via the first light shielding layer 61 between the part 62c of the first detection electrode 62a and the part 63c of the second detection electrode 63a. Therefore, it is possible to reduce the possibility that the detection accuracy of the input device X6 is lowered due to the influence of the first light shielding layer 61.

  In Modification 5, as shown in FIG. 23, the opening 61c is positioned so as to surround a part 63c of the second detection electrode 63a in plan view. For this reason, possibility that an impedance will arise via the 1st light shielding layer 61 between the part 62c of the 1st detection electrode 62a and the part 63c of the 2nd detection electrode 63a can be reduced more.

[Modification 6]
In addition, although this specification specifically demonstrated each of said embodiment and the modifications 1-5, it is not restricted to this, The matter separately described in said embodiment and the modifications 1-5 is suitably used. Combination examples are also described. That is, the input device according to the present invention is not limited to the input devices X1 to X6, and includes an input device that appropriately combines the matters individually described in the above embodiment and the first to fifth 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-X6. 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-X6.

X1 to X6 Input device Y1 Display device Z1 Mobile terminal (electronic device)
2 Base body 2B 2nd main surface 5a, 21a, 51a, 62a 1st detection electrode (detection electrode)
5b, 21b, 51b, 62b First connection wiring (connection wiring)
5c, 21c, 51c, 62c First detection electrode part 5d First detection electrode opening part 51d First detection electrode first opening part 63a Second detection electrode 63c Second detection electrode part part 3, 22, 41 , 52, 61 First light shielding layers 22a, 41a, 61a Second detection electrode opening 52a Second detection electrode second opening 8 Detection wiring 9 Second protective layer (protective layer)
31 2nd light shielding layer 100 1st housing (casing)
200 Display panel

Claims (12)

A substrate having a main surface;
A first light-shielding layer provided on the main surface of the substrate;
A detection electrode which is provided on the main surface of the substrate and a part of which is located on the first light shielding layer;
A detection wiring provided on the first light shielding layer and connected to the detection electrode;
An input device, wherein an opening is provided in at least one of the part of the detection electrode and the first light shielding layer corresponding to the part.   The input device according to claim 1, wherein all of the openings are provided in the part of the detection electrode. The opening is provided in the part of the detection electrode;
A protective layer that covers the detection wiring and is provided on the first light shielding layer;
The input device according to claim 1, wherein the protective layer is also located in the opening. The opening is provided in the first light shielding layer corresponding to the part of the detection electrode,
A protective layer covering the part of the detection electrode and provided on the first light shielding layer;
A second light shielding layer provided on the protective layer,
The input device according to claim 1, wherein the second light shielding layer overlaps the opening in a plan view.   The input device according to claim 4, wherein a plurality of the openings are provided along the outer edge of the first light shielding layer in a plan view. The opening is provided in the part of the detection electrode;
Provided on the main surface of the substrate corresponding to a region where the first light shielding layer is not located in a plan view, further comprising a connection wiring connected to the detection electrode;
The input device according to any one of claims 1 to 3, wherein a distance between an outer edge of the opening and the partial outer edge of the detection electrode is larger than a width of the connection wiring in a plan view. . The opening is provided in each of the part of the detection electrode and the first light shielding layer corresponding to the part,
The opening provided in the first part of the detection electrode and the opening provided in the first light shielding layer located below the part do not overlap in plan view. The input apparatus as described in any one of -6. The detection electrode is made of a transparent conductive material,
The input device according to claim 1, wherein the detection wiring is made of a metal material having a light shielding property larger than that of the detection electrode. The first light shielding layer has a coloring material,
The input device according to claim 1, wherein the coloring material contains carbon, titanium, or chromium. A substrate having a main surface;
A first light-shielding layer provided on the main surface of the substrate;
A first detection electrode which is provided on the main surface of the base and a part of which is located on the first light shielding layer;
A second detection electrode provided on the main surface of the substrate, a part of which is located on the first light shielding layer and adjacent to the first detection electrode;
A plurality of detection wirings provided on the first light shielding layer and connected to the first detection electrode and the second detection electrode;
The input device, wherein the first light shielding layer is provided with an opening between the part of the first detection electrode and the part of the second detection electrode in plan view. The input device according to any one of claims 1 to 10,
A display panel disposed opposite the input device;
And a housing containing the display panel.   An electronic apparatus comprising the display device according to claim 11.