JP2010061384A - Input device and portable information processor using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an input device and a portable information processor having a much wider valid display region in which any erroneous operation is hardly generated. <P>SOLUTION: An input device A1 includes: a transparent electrode layer 4 having a plurality of belt-like elements 41 extended to a direction x arranged in parallel with each other; a transparent electrode layer 5 having a plurality of belt-like elements 51 arranged in parallel with each other along a direction y different from the direction x, and insulated from and laminated on the electrode layer 4; and a control means for detecting the approach of a conductor according to the change in capacitance which generates when the conductor approaches from the electrode layer 4 side in the lamination direction z to the electrode layers 4 and 5. The second electrode layer 5 includes a plurality of wiring 52 extended from the end section in the direction y of each belt-like element 51, and conducted with the control means, and the electrode 4 includes a conductive layer 42 insulated from the plurality of belt-like elements 41, and formed so as to be overlapped with the plurality of wiring 52 when it is viewed from the x direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an input device that constitutes a so-called touch panel by being laminated with, for example, a liquid crystal display panel, and a portable information processing device using the same.

  FIG. 7 shows an example of a conventional input device. The input device X shown in the figure forms a so-called touch panel by being superimposed on the liquid crystal display panel Y. This touch panel is used as display means and operation means of the mobile phone Z. The input device X includes transmission plates 91 and 92 arranged in parallel. An electrode layer 93 is formed on the transmission plate 91, and an electrode layer 94 is formed on the transmission plate 92. The electrode layers 93 and 94 each have a plurality of strip-like elements arranged in parallel. The strip-shaped elements of the electrode layer 93 and the strip-shaped elements of the electrode layer 94 are arranged at right angles to each other. The plurality of strip-like elements in the electrode layer 93 are connected to an IC chip (not shown) via flexible substrates. The plurality of strip-like elements in the electrode layer 94 are connected to the flexible substrate via a plurality of metal wirings (not shown). The flexible substrate is connected to the IC chip (not shown). The plurality of metal wirings (not shown) are formed to extend along the outer edge of the electrode layer 94, for example.

  The mobile phone Z has a transparent cover 95 that constitutes a part of the housing. The input device X is joined to the transparent cover 95 by a transparent adhesive 96. Below the input device X, a liquid crystal display panel Y is arranged. When the user of the mobile phone Z operates the mobile phone Z, if the finger Fg is brought close to or in contact with the transparent cover 95, the electrostatic force is generated between the finger Fg and the belt-like elements of the electrode layers 93 and 94. Capacity is generated. By detecting the magnitude of this capacitance with the IC chip, it is possible to detect which position the finger Fg has approached in plan view.

  The input device X is handled as one component constituting the mobile phone Z. For this reason, prior to assembling the mobile phone Z, the input device X is assembled as a single unit, and a detection check operation is performed as a single unit. However, in the input device X, since a plurality of metal wirings are formed on the outer edge of the electrode layer 94, there is a possibility that even if there is a small amount between these metal wirings and the finger Fg, a capacitance may be generated. There was a possibility of causing the operation.

  In addition, a portable information processing terminal represented by the cellular phone Z is required to be downsized, but there is a strong demand for a large display screen. In the input device X, metal wiring is provided on the outer edge, and the effective display area is limited to the inside of the plurality of metal wirings. Therefore, it is difficult to increase the size of the screen while reducing the size of the entire device.

JP 2008-33777 A

  The present invention has been conceived under the circumstances described above, and it is an object of the present invention to provide an input device and a portable information processing device that are less likely to malfunction and that have a wider effective display area. To do.

  The input device provided by the first aspect of the present invention includes a transparent first electrode layer having a plurality of strip-like elements extending along a first direction arranged in parallel to each other, and the first direction. A transparent second electrode layer having a plurality of strip-like elements arranged in parallel to each other along different second directions, insulated and laminated with respect to the first electrode layer; and Control means for detecting the approach of the conductor by a change in capacitance generated when the conductor approaches from the first electrode layer side in the stacking direction with respect to the first and second electrode layers. In the input device, the second electrode layer includes a plurality of wires extending from ends in the second direction of the respective band-shaped elements included therein and electrically connected to the control means. The electrode layer is insulated against the plurality of strip-like elements contained therein, and And a conductor layer formed so as to overlap the plurality of wirings in plan view.

  According to such a configuration, since the conductor layer and the plurality of wires are blocked by the conductor layer, a change in capacitance between the conductor and the plurality of wires occurs. There is nothing. For this reason, the input device can prevent erroneous detection even when, for example, the widths of the plurality of wirings are increased.

  In a preferred embodiment of the present invention, the conductor layer is connected to a ground terminal or a power supply voltage terminal.

  In a preferred embodiment of the present invention, the plurality of wirings and the conductor layer are formed of a transparent conductive film. According to such a configuration, the effective display area of the input device extends to a portion where the plurality of wirings and the conductor layer are formed. Therefore, it is possible to widen the effective display area of the input device while maintaining the size of the entire input device.

  In a preferred embodiment of the present invention, the plurality of wirings are arranged so as to be separated from each other in the second direction, and each wiring is adjacent to the wiring in the second direction, A narrow width portion that overlaps with other wiring located closer to the plurality of strip elements than the wiring, and a wide width portion that does not overlap with the other wiring, and the width of the wide width portion is the narrow width portion. It is formed larger than the width of the width portion. According to such a configuration, the resistance of the plurality of wirings can be suppressed.

  In a preferred embodiment of the present invention, a first transmission plate having a front surface and a back surface, the surface of which is a contact surface in contact with the conductor, and the first electrode layer being formed on the back surface. It has. According to such a configuration, the conductor is in direct contact with the first transmission plate on which the first electrode layer is formed. For this reason, only the first transmission plate is interposed between the conductor and the first electrode layer. As a result, immediately after the input device is manufactured, if it is confirmed that the position of the conductor can be appropriately detected by the input device alone, the input device is incorporated into a portable information processing device such as a mobile phone. No such confirmation is necessary. Therefore, even after the assembly of the portable information processing apparatus is completed, the position of the conductor can be accurately detected.

  In a preferred embodiment of the present invention, a second transmission in which the second electrode layer is formed on the front surface of the first transmission plate facing the back surface and facing the back surface. With a plate. According to such a configuration, the distance between the second electrode layer and the first transmission plate is relatively small. Therefore, it is advantageous for accurately detecting the capacitance of the second electrode layer.

  In a preferred embodiment of the present invention, the back surface of the second transmission plate overlaps with the plurality of strip-like elements of the first and second electrode layers in a plan view, and has a conductive and transparent shielding layer. Is formed. The shield layer is connected to a ground terminal or a power supply voltage terminal. According to such a structure, it can suppress that the said some strip | belt-shaped element of the said 1st and 2nd electrode layer receives the influence of an external noise. In addition, the shield layer can be provided without significantly hindering the thinning of the input device.

  The portable information processing device provided by the second aspect of the present invention is disposed inside the housing with respect to the housing, the input device provided by the first aspect of the present invention, and the input device. A display panel, and the first transmission plate is exposed from an opening formed in the housing.

  According to such a configuration, the portable information processing apparatus can be reduced in size.

  In a preferred embodiment of the present invention, the display surface of the display panel, the conductor layer, and the plurality of wirings overlap each other in the stacking direction of the first and second electrode layers. According to such a configuration, it is possible to increase the size of the display surface of the display panel while reducing the size of the portable information processing apparatus.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

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

  1 to 3 show a first embodiment of an input device according to the present invention and a portable information processing device using the same. The input device A1 of the present embodiment includes transmission plates 1, 2, 3, electrode layers 4, 5, and a shield layer 6, and detects that a finger Fg as a conductor has approached by a change in capacitance. Is to do. The electrode layer 4 is a first electrode layer according to the present invention, and the electrode layer 5 is a second electrode layer according to the present invention. Also, the first direction according to the present invention is the x direction, the second direction is the y direction, and the direction in which the electrode layers 4 and 5 are laminated is the z direction. The input device A1 is formed in a long rectangular shape that extends long in the x direction when viewed in the z direction.

  The transmission plate 1 is selected from, for example, a single-layer resin body of a transparent resin such as polyethylene terephthalate (hereinafter referred to as PET), polyethylene naphthalate (hereinafter referred to as PEN), polycarbonate (hereinafter referred to as PC), or a transparent resin represented by these. Further, it is a laminated resin body made of two kinds of materials or a transparent plate made of glass, and has a contact surface 1a and a facing surface 1b. The contact surface 1a is a surface that contacts when the finger Fg approaches. For example, a coating layer (not shown) may be provided on the contact surface 1a. This coating layer functions to suppress deterioration of visibility due to reflection of extraneous light and to prevent the transmission plate 1 from being damaged. The facing surface 1b is a surface facing the transmission plate 2 in the z direction, and a plurality of wiring pads 11 and electrode layers 4 are formed thereon. The plurality of wiring pads 11 are made of, for example, a transparent conductive material such as ITO or IZO, or a metal such as Ag or Au, and are formed at both ends in the y direction of one end portion in the x direction of the facing surface 1b.

  The electrode layer 4 is obtained by patterning a thin film made of a transparent conductive material such as ITO or IZO. The electrode layer 4 has a plurality of strip-like elements 41 and a conductor layer 42. The plurality of strip elements 41 are arranged in parallel to each other. Each band-like element 41 has a shape in which a portion expanded in a substantially rhombus shape and a constricted portion are alternately arranged in the longitudinal direction. In addition, the strip | belt-shaped element 41 is not limited to what has the part expanded in the substantially rhombus shape, For example, you may have a polygonal expansion part other than round shape and a rhombus.

  As shown in FIG. 2, the conductor layer 42 is formed in a strip shape extending along both side edges in the y direction and the other end edge in the x direction of the facing surface 1b. The conductor layer 42 is separated from the plurality of strip-like elements 41 and the plurality of wiring pads 11 and is electrically insulated. The conductor layer 42 is connected to a ground terminal or a power supply voltage terminal by a wiring (not shown).

  The transmission plate 2 is, for example, a transparent resin single-layer resin body made of a transparent resin such as PET, PEN, or PC, or a laminated resin body made of two kinds of materials selected from transparent resins represented by these, or a transparent plate made of glass. And arranged parallel to the transmission plate 1 with a gap therebetween. The transmission plate 2 has a facing surface 2a. The facing surface 2 a is a surface facing the facing surface 1 b of the transmission plate 1. An electrode layer 5 is formed on the facing surface 2a.

  The electrode layer 5 is obtained by patterning a thin film made of a transparent conductive material such as ITO or IZO. The electrode layer 5 has a plurality of strip-like elements 51 and a plurality of wirings 52. The plurality of strip elements 51 are arranged in parallel to each other so as to be perpendicular to the plurality of strip elements 41. Each band-like element 51 has a shape in which portions expanded in a substantially rhombus shape and constricted portions are alternately arranged in the longitudinal direction. In addition, the strip | belt-shaped element 51 is not limited to what has the part expanded in the substantially rhombus shape, For example, you may have a polygonal expansion part other than round shape and a rhombus.

  Each of the plurality of wirings 52 extends from one of the end portions in the y direction of the plurality of strip-like elements 51. As shown in FIG. 3, when the wiring 52 extends from one end in the y direction on one of the strip elements 51 adjacent in the x direction, the other strip element 51 in the other side in the y direction A wiring 52 extends from the end on the side. The plurality of wirings 52 are bent and extend along the x direction, and are arranged in parallel to each other in the y direction. Further, the plurality of wirings 52 are arranged in a region overlapping with the conductor layer 42 when viewed in the z direction.

  Each wiring 52 includes a wide portion 52a and a narrow portion 52b. However, the wiring 52 in the vicinity of one end in the x direction has only a narrow width portion 52b. As shown in FIG. 3, the wide width portion 52 a is formed in a region where each wiring 52 does not overlap with another wiring 52 adjacent inward in the y direction. Each of the wide width portions 52a is formed in a rectangular shape as viewed in the z direction. On the other hand, the narrow width portion 52b is formed in a region where each wiring 52 overlaps with another wiring 52 adjacent inward in the y direction. One end portion in the x direction of each narrow width portion 52b is disposed so as to overlap each of the plurality of wiring pads 11 in the z direction view.

  A transparent insulating material 71 is interposed between the transmission plates 1 and 2. As the transparent insulating material 71, a material that transmits light well and can insulate the electrode layers 4 and 5 from each other may be used. In the present embodiment, the transparent insulating material 71 is formed by curing an epoxy or acrylic transparent adhesive applied between the transmission plates 1 and 2. In FIG. 2, the transparent insulating material 71 is omitted for convenience of understanding.

  A thin plate-like anisotropic conductive adhesive 73 extending in the y direction is provided between the transmission plates 1 and 2. In FIG. 3, the anisotropic conductive adhesive 73 is indicated by an imaginary line for convenience of understanding. The anisotropic conductive adhesive 73 is, for example, a material in which minute conductive particles are mixed in an insulating resin, and has a property of conducting electricity only in a direction in which the transmission plates 1 and 2 are pressed against each other. The anisotropic conductive adhesive 73 has an annular shape that overlaps one end in the x direction of the plurality of wiring pads 11 and the plurality of narrow width portions 52b and surrounds the plurality of strip-like elements 41 and 51 when viewed in the z direction. Is formed. The plurality of wirings 52 and the plurality of wiring pads 11 are electrically connected via the anisotropic conductive adhesive 73. The anisotropic conductive adhesive 73 functions to seal the transparent insulating material 71.

  As clearly shown in FIG. 3, the expanded portions of the plurality of strip-like elements 41 and 51 are arranged so as not to overlap each other when viewed in the z direction. Furthermore, it arrange | positions so that the said expansion | swelling part of the some strip | belt-shaped element 51 may fit in the clearance gap between the said expansion | swelling parts of the some strip | belt-shaped element 41. FIG.

  The transmission plate 3 is, for example, a transparent resin single-layer resin body made of a transparent resin such as PET, PEN, or PC, or a laminated resin body made of two types of materials selected from these transparent resins, or a transparent plate made of glass. And arranged parallel to the transmission plate 2 with a gap therebetween. The transmission plate 3 has a facing surface 3a. The facing surface 3 a is a surface facing the transmission plate 2. A shield layer 6 is formed on the facing surface 3a.

  The shield layer 6 is a thin film made of a transparent conductive material such as ITO or IZO, and is formed in a region overlapping the plurality of strip-like elements 41 and 51 of the electrode layers 4 and 5 in a plan view. The shield layer 6 is for preventing the electrode layers 4 and 5 from picking up external electromagnetic noise. Further, a parasitic capacitance is generated between the electrode layers 4 and 5 and the shield layer 6. Thereby, the electrostatic capacitance generated between the finger Fg and the electrodes 4 and 5 is less susceptible to changes due to the environment where the input device A1 is placed, and more accurate detection is possible. A transparent insulating material 72 made of, for example, epoxy or acrylic is interposed between the transmission plates 2 and 3. The shield layer 6 is connected to a ground terminal or a power supply voltage terminal by a wiring (not shown).

  Flexible wiring boards 75 and 76 extend from the transmission plates 1 and 3. The flexible wiring board 75 is connected to a plurality of strip elements 41 formed on the transmission plate 1 and a wiring pattern (not shown) extending from the plurality of wiring pads 11 that are electrically connected to the plurality of strip elements 51. The plurality of band-like elements 41 and the plurality of band-like elements 51 are connected to the IC chip 74 via the flexible wiring board 75. The IC chip 74 is configured to be able to independently and always detect the capacitance generated in each of the band-like elements 41 and 51. The shield layer 6 is connected to the flexible wiring board 76.

  The mobile phone C includes the input device A1, the liquid crystal display panel B, and the housing 81, and corresponds to an example of the mobile information processing device referred to in the present invention.

  The liquid crystal display panel B includes, for example, a transparent substrate and a TFT substrate facing each other, and a liquid crystal layer sandwiched between them, and has a function of displaying an operation menu screen used for the operation of the mobile phone C, an image, or the like. . The image displayed on the liquid crystal display panel B is visible through the input device A1. In the present embodiment, the display surface of the liquid crystal display panel B is configured to overlap the conductor layer 42 and the plurality of wirings 52 when viewed in the z direction.

  The casing 81 is, for example, a thin box shape made of resin, and accommodates the input device A1 and the liquid crystal display panel B. An opening 81 a is formed in the housing 81. The opening 81a is provided to expose the transmission plate 1 of the input device A1 so that an image displayed by the liquid crystal display panel B can be viewed. In particular, in this embodiment, the part surrounding the transmission plate 1 in the housing 81 and the transmission plate 1 are flush with each other.

  The operation of the mobile phone C is performed as follows.

  The liquid crystal display panel B displays, for example, an operation menu screen including icons that imitate buttons that perform various functions of the mobile phone C. In a state where the user does not perform any operation, the electrostatic capacity is hardly generated in each of the band-like elements 41 and 51. Next, the user touches the contact surface 1a of the transmission plate 1 with the finger Fg so as to touch the icon corresponding to the function to be selected. At this time, the distance between the belt-like elements 41 and 51 and the finger Fg is shortened. Thereby, an electrostatic capacity is generated in each of the belt-like elements 41 and 51. Among the plurality of strip elements 41 and 51, the closer the distance to the finger Fg, the larger the capacitance. That is, the position of the finger Fg in the direction in which the plurality of band-like elements 41 are arranged can be detected by comparing the capacitances of the plurality of band-like elements 41. Further, by comparing the electrostatic capacities of the plurality of strip-shaped elements 51, the position of the finger Fg in the direction in which the plurality of strip-shaped elements 51 are arranged can be detected. As a result, the position of the finger Fg in the z-direction view is determined, and the icon that the user is trying to touch is specified. The mobile phone C exhibits a function corresponding to this icon.

  Next, operations of the input device A1 and the mobile phone C will be described.

  According to the present embodiment, since both the conductor layer 42 and the plurality of wirings 52 are made of a transparent conductive material, the entire region in the y direction of the input device A1 is transparent. For this reason, the input device A1 has a wider effective display area in which the display surface of the liquid crystal display panel B can be visually recognized than the input device X of the same size in the prior art shown in FIG. For this reason, in the mobile phone C in which the input device A1 is incorporated, it is possible to use the liquid crystal display panel B having a display surface wider than the conventional one.

  Further, in the present embodiment, the plurality of wirings 52 have a wide width portion 52b having a wide width, and wiring resistance can be suppressed.

  Furthermore, in this embodiment, the conductor layer 42 insulated from the IC chip 74 is formed so as to block between the finger Fg and the plurality of wirings 52 in the z direction. For this reason, it is possible to prevent a capacitance from being generated in the plurality of wirings 52 due to the approach of the finger Fg. Therefore, the input device A1 can prevent a malfunction in which the IC chip 74 reacts due to the influence of the plurality of wirings 52.

  Furthermore, in this embodiment, since the some wiring 52 consists of the same electroconductive material as the some strip | belt-shaped element 51, the usage-amount of Ag and Au can be suppressed. For this reason, in the input device A1, the manufacturing process can be simplified and the cost can be reduced.

  Furthermore, according to the present embodiment, the finger Fg directly touches the transmission plate 1 on which the electrode layer 4 is formed. Therefore, for example, the transparent cover 95 and the transparent adhesive 96 in the prior art shown in FIG. 7 are not interposed between the finger Fg and the electrode layer 4. Further, only the transparent insulating material 71 is interposed between the electrode layer 5 and the electrode layer 4. Thus, immediately after the input device A1 is manufactured, if it is confirmed that the position of the finger Fg can be appropriately detected by the input device A1 alone, such confirmation after the input device A1 is incorporated into the mobile phone C No need at all. Therefore, even after the assembly of the mobile phone C is completed, the position of the finger Fg can be accurately detected, and the mobile phone C can be appropriately operated.

  By using the transmission plate 1 as a part of the exterior of the mobile phone C, it is not necessary to provide the transparent cover 95 in the prior art shown in FIG. This is advantageous in reducing the thickness of the mobile phone C. In addition, the detection accuracy can be increased as the distance between the finger Fg and the electrode layers 4 and 5 is shorter. Furthermore, since the transmission plate 1 and the casing 81 are flush with each other, the finger Fg can be reliably brought into contact with the vicinity of the end of the transmission plate 1. Therefore, it is possible to appropriately detect that the user has tried to touch, for example, an icon displayed near the end of the transmission plate 1.

  By providing the shield layer 6, malfunction of the input device A1 can be suitably prevented.

  FIG. 4 shows a second embodiment of an input device according to the present invention and a portable information processing device using the same. The input device A2 of this embodiment is different from the above-described embodiment in that the transmission device 3 is not provided. In the present embodiment, the shield layer 6 is provided on the back surface 2 b of the transmission plate 2. The shield layer 6 is covered with a transparent insulating material 72. The transparent insulating material 72 functions to prevent the shield layer 6 from being damaged when the input device A2 is transported or incorporated into the mobile phone C.

  According to such an embodiment, it is possible to reduce the thickness of the input device A2 by an amount corresponding to the transmission plate 3 as compared with the above-described embodiment. This is advantageous in reducing the thickness of the mobile phone C.

  5 and 6 show a third embodiment of the input device according to the present invention. In the input device A3 of the present embodiment, the shapes of the plurality of band-like elements 41 and 51 are different from those of the above-described embodiments. In the present embodiment, as shown in FIG. 5, each belt-like element 41 has a relatively narrow straight belt shape extending in the x direction. Three strip elements 41 are integrally formed. Moreover, as shown in FIG. 6, each strip | belt-shaped element 51 is made into the comparatively wide linear strip | belt shape extended in ay direction.

  Also in such an embodiment, as in the above-described embodiment, for example, an effective display area that can be viewed on the display surface of a liquid crystal display panel using the input device A3 can be increased.

  The input device and the portable information processing apparatus according to the present invention are not limited to the above-described embodiments. The specific configuration of each part of the input device and the portable information processing device according to the present invention can be varied in design in various ways. For example, in the above embodiment, the wirings 52 alternately extend from both ends of the plurality of strip-like elements 51, but the wirings 52 may extend only from one end.

It is principal part sectional drawing which shows the input device and mobile phone based on 1st Embodiment of this invention. It is the principal part top view seen from the plane in alignment with the II-II line of FIG. It is the principal part top view seen from the plane in alignment with the III-III line of FIG. It is principal part sectional drawing which shows the input device and mobile telephone based on 2nd Embodiment of this invention. It is a principal part top view which shows the input device based on 3rd Embodiment of this invention. It is a principal part top view which shows the input device based on 3rd Embodiment of this invention. It is principal part sectional drawing which shows an example of the conventional input device and a mobile telephone.

Explanation of symbols

A1, A2, A3 Input device B Liquid crystal display panel (display panel)
C Mobile phone Fg Finger (conductor)
x (first) direction y (second) direction z (stacking of electrode layers) direction 1 (first) transmission plate 1a contact surface (surface)
1b Opposite surface (back surface)
11 Wiring pad 2 (second) transmission plate 2a Opposing surface (surface)
3 Transmission plate 3a Opposing surface 4 (first) electrode layer 41 band-like element 42 conductor layer 5 (second) electrode layer 51 band-like element 52 wiring 6 shield layers 71 and 72 transparent insulating material 73 anisotropic conductive adhesive 74 IC chip (control means)
75, 76 Flexible wiring board 81 Housing 81a Opening

Claims (10)

A transparent first electrode layer having a plurality of strip-like elements extending in a first direction arranged parallel to each other;
A transparent second layer having a plurality of strip-like elements arranged in parallel to each other along a second direction different from the first direction, insulated from the first electrode layer and laminated. An electrode layer of
Control means for detecting the approach of the conductor by a change in capacitance generated when the conductor approaches from the first electrode layer side in the stacking direction with respect to the first and second electrode layers;
An input device comprising:
The second electrode layer has a plurality of wires extending from the end portions in the second direction of the respective band-shaped elements to be included and electrically connected to the control means,
The first electrode layer has a conductor layer formed so as to be insulated from a plurality of enveloping strip-like elements and to overlap with the plurality of wirings in a plan view. apparatus.   The input device according to claim 1, wherein the conductor layer is connected to a ground terminal or a power supply voltage terminal.   The input device according to claim 1, wherein the plurality of wirings and the conductor layer are formed of a transparent conductive film. The plurality of wirings are arranged so as to be separated from each other in the second direction,
Each wiring is adjacent to the wiring in the second direction, and has a narrow width portion that overlaps with other wiring at a position closer to the plurality of strip-like elements than the wiring, and a wide width that does not overlap with the other wiring And
The input device according to claim 3, wherein a width of the wide portion is formed larger than a width of the narrow portion.   Any one of Claims 1 thru | or 4 which has a 1st permeation | transmission board which has a front and back surface, the surface is made into the contact surface which the said conductor contact | connects, and the said 1st electrode layer is formed in the back surface. The input device according to the above.   The second transmission plate according to claim 5, further comprising a second transmission plate that is disposed to face the back surface of the first transmission plate and has the second electrode layer formed on a surface that faces the back surface. Input device.   The back surface of the second transmission plate is formed with a transparent shield layer that overlaps with the plurality of strip-like elements of the first and second electrode layers in a plan view and has conductivity. The input device described.   The input device according to claim 7, wherein the shield layer is connected to a ground terminal or a power supply voltage terminal. A housing and the input device according to any one of claims 5 to 8,
A display panel disposed inside the housing with respect to the input device,
The portable information processing apparatus, wherein the first transmission plate is exposed from an opening formed in the casing.   The portable information processing apparatus according to claim 9, wherein the display surface of the display panel, the conductor layer, and the plurality of wirings overlap in the stacking direction of the first and second electrode layers. .

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