JP6475126B2 - Input device provided with capacitive touch panel and method of manufacturing input device - Google Patents

Description

  The present invention relates to an input device including a capacitive touch panel and a method for manufacturing the input device.

  The tablet described in Patent Document 1 is a resistive touch panel, and is provided on each of the upper and lower electrode plates, which are arranged to face each other with a predetermined gap, and on the surfaces facing each other. And an upper conductive film and a lower conductive film. On the lower electrode plate, a plurality of dot spacers are formed on one surface provided with the lower conductive film so as to protrude at a predetermined interval. In this tablet, by pressing the surface of the upper electrode plate with a finger or the like at a predetermined pressure or more, in addition to the upper conductive film contacting the dot spacer, the portion of the upper conductive film not contacting the dot spacer A part of the conductive film is partially conducted to the lower conductive film, whereby a desired character or the like can be input. The dot spacer has a small protruding height and a sufficient distance so that when the user presses with a pressure higher than a predetermined pressure, the upper conductive film reliably contacts and conducts with the lower conductive film. Has been placed.

  In recent years, with the widespread use of tablet PCs, smartphones, and other small input devices, capacitive touch panels capable of multipoint detection have been increasingly employed as touch panels used for these devices. Capacitive touch panel detects the position by detecting the change in capacitance between the finger and the conductive film of the touch panel without pressing the touch panel with a pressure higher than a certain level like a resistive touch panel. Can do. Therefore, it is not necessary to provide dot spacers on the conductive film unlike the resistive film type touch panel.

JP 2003-223281 A

  In the input device described above, there is a demand for high-definition display by a display device and thinning of a display device such as a liquid crystal device and a capacitive touch panel included in the input device.

  As for high definition, the display surface of the display is covered with a hard coat that is flat, high in hardness, and has no antireflection treatment so that the high definition display is not blurred. The capacitive touch panel is separated with a certain interval. As for thinning, it is required to reduce the distance between the capacitive touch panel and the display, in addition to thinning each layer constituting the capacitive touch panel.

  However, if the gap between the capacitive touch panel and the display becomes narrow, the bottom surface of the touch panel and the surface of the hard coat of the display may come into contact with each other depending on the pressure when the user presses the touch panel. There is. When the state where the lower surface of the touch panel and the surface of the display device are kept in contact with each other is maintained, there is a possibility that the display on the display portion may be blurred due to refraction of the emitted light from the display device.

  On the other hand, for example, even if the dot spacer as described in Patent Document 1 is provided on the lower surface of the touch panel, a deep recess is provided between the dots so that the upper conductive film is reliably in contact with the lower conductive film. Because of the shape and pattern, it is difficult to suppress display blur due to contact between the lower surface of the touch panel and the display surface.

  In view of the above, an object of the present invention is to provide an input device that can suppress blurring of display during operation of the touch panel, and can achieve a reduction in thickness and display.

In order to solve the above-described problems, an input device of the present invention includes a capacitive touch panel and a display device having a display surface disposed so as to face the lower surface of the capacitive touch panel. The bottom surface of the touch panel is formed so that a dot spacer group consisting of a plurality of protrusions having translucency and a flat end face shape protrudes toward the display, and the protrusions are capacitive touch panels. The maximum width L in the surface direction of the lower surface and the thickness H in the protruding direction satisfy the following formula (1).
0.02 ≦ H / L ≦ 0.1 (1)

  Here, the maximum width L is the diameter when the end face shape of the protrusion is circular, the long axis when it is an ellipse, and the longest diagonal line when it is a rectangle.

  Thereby, since several protrusion becomes a shape which spread in the surface direction of the lower surface of an electrostatic capacitance type touch panel, the dent between adjacent protrusions becomes shallow. Therefore, even when a plurality of protrusions come into contact with the surface of the display when the capacitive touch panel is pressed by the user, the surface layer of the display is less likely to enter between adjacent protrusions. Capacitive touch panel and display are easily separated. For this reason, generation | occurrence | production of the display blur by a user's operation can be suppressed, and a high-definition display can be implement | achieved.

  In the input device of the present invention, it is preferable that the display surface of the display device is flat and not subjected to antireflection treatment.

  Thereby, since the light emitted from the display device is not diffused or irregularly reflected, the occurrence of display blur can be suppressed.

The input device of the present invention is further characterized in that the plurality of protrusions are arranged at intervals of 0.1 mm or more and 0.4 mm or less .

  As a result, the capacitive touch panel and the display device can be easily separated immediately, thereby suppressing the occurrence of display blur due to the user's operation.

The input device of the present invention is further characterized in that the distance between the lower surface of the protrusion formed on the capacitive touch panel and the display surface of the display is 0.1 mm or more and 0.3 mm or less .

  Thereby, it is possible to achieve both reduction in thickness of the input device and ease of separation of the capacitive touch panel and the overcoat layer 32.

  In the input device of the present invention, the capacitive touch panel preferably functions as a proximity sensor that detects that the user has approached the upper surface of the capacitive touch panel.

  According to the present invention, it is possible to suppress display blur at the time of a touch panel operation, and it is possible to reduce the thickness and increase the display definition.

It is a top view which shows the structure of the input device which concerns on embodiment of this invention. It is a figure which shows the outline of the laminated constitution of the electrostatic capacitance type touch panel and display in embodiment of this invention, (A) is sectional drawing which shows the whole, (B) is a fragmentary sectional view. It is a figure which shows the manufacturing process of the input device which concerns on embodiment of this invention.

Hereinafter, an input device according to an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing transparent electrodes 131 and 132 and a wiring part 133 formed on the surface of the transparent base material layer 14 constituting the input device 100 (touch panel) in the present embodiment. FIG. 2A is a diagram illustrating an outline of a layer configuration of the capacitive touch panel 10 and the display 30 in the present embodiment. In FIG. 2A, the transparent electrodes 131 and 132 and the wiring part 133 are schematically shown as the electrode layer 13, and the circuit part 19 shows a part thereof. “Transparent” and “translucent” refer to a state where the visible light transmittance is 50% or more (preferably 80% or more), and the haze value is preferably 6 or less. The upper surface is the upper surface in the Z1 direction, and the lower surface is the lower surface in the Z2 direction.

  As illustrated in FIG. 2A, the input device 100 includes a capacitive touch panel 10 and a display 30. The display 30 is disposed so that the display surface 31 a and the overcoat layer 32 formed on the display surface 31 a face the lower surface 17 b of the lowermost shield layer 17 of the capacitive touch panel 10.

  The capacitive touch panel 10 includes a cover layer 11, an optical transparent adhesive layer 12, an electrode layer 13, a transparent base material layer 14, an optical transparent adhesive layer 15, and a transparent base material from the upper side to the lower side in the Z1 direction. The layer 16 and the shield layer 17 (conductive layer) are arranged in order. Further, a dot spacer group 18 and a circuit portion 19 are formed on the lower surface 17 b of the shield layer 17. The display device 30 is, for example, a liquid crystal display device or an organic EL device display device, and an overcoat layer 32 is formed on the display surface 31 a on the upper surface in the Z1 direction of the display device body 31. The capacitive touch panel 10 and the display 30 are fixed to each other by an insulating adhesive layer 20 formed on the outer edge portion in the X1-X2 direction. The capacitive touch panel 10 may have a configuration in which the optical transparent adhesive layer 15 and the transparent base material layer 16 are omitted, and the shield layer 17 is formed on the lower surface 14b of the transparent base material layer 14.

  The cover layer 11 is formed of, for example, a glass plate material or a plastic substrate. As the plastic substrate, acrylic resin (PMMA) or polycarbonate resin (PC) can be used. As shown in FIG. 1, the cover layer 11 has a frame-shaped decorative region 120 (non-display region), and the inside of the decorative region 120 is operated by a display region 110 (an operation body such as a finger). The area corresponding to the display screen of the display 30 can be performed). The display region 110 is formed of a transparent / translucent material, and the decoration region 120 is formed of an opaque / non-transparent material (for example, a material made opaque by dissolving opaque particles in PET). Yes.

  The optical transparent adhesive layers 12 and 15 (OCA; Optical Clear Adhesive) are, for example, acrylic adhesives. The optical transparent adhesive layer 12 is disposed so as to cover the upper surface 14a of the transparent substrate layer 14 and the upper surface 13a of the electrode layer 13 formed on the transparent substrate layer 14, and the cover layer 11 includes the electrode layer 13 and the transparent substrate. The layer 14 is bonded via the optical transparent adhesive layer 12.

  The transparent base material layers 14 and 16 are formed of, for example, a film-like base material such as PET or a glass base material having translucency. The transparent base material layer 16 is bonded to the transparent base material layer 14 via the optical transparent adhesive layer 15 disposed so as to cover the lower surface 14 b of the transparent base material layer 14.

Next, the electrode layer 13 will be described.
As shown in FIG. 1, a plurality of first transparent electrodes 131 and a plurality of second transparent electrodes are arranged on the upper surface 14 a of the transparent base material layer 14 in a range corresponding to the display area 110 of the cover layer 11. 132 is formed. Each of the transparent electrodes 131 and 132 is formed by sputtering a transparent conductive material such as ITO (Indium Tin Oxide).

  The first transparent electrodes 131 are connected to each other in the Y1-Y2 direction via an elongated connecting portion 131a. Further, the plurality of first transparent electrodes 131 connected in the Y1-Y2 direction are arranged in a plurality of rows at intervals in the X1-X2 direction.

  The second transparent electrodes 132 are connected to each other in the X1-X2 direction via an elongated bridge wiring 132a. The plurality of second transparent electrodes 132 connected in the X1-X2 direction are arranged in a plurality of rows at intervals in the Y1-Y2 direction.

  The plurality of first transparent electrodes 131 and the connecting portions 131a that connect them, the plurality of second transparent electrodes 132 and the bridge wiring 132a that connects them are insulated from each other by an insulating material (not shown). Further, the connecting portion 131a, the bridge wiring 132a, and the insulating material are all located in the display region 110, and are made of a transparent and translucent material like the transparent electrodes 131 and 132.

  The plurality of wiring portions 133 are drawn from the connection portion 131a and the bridge wiring 132a on the upper surface 14a of the transparent base material layer 14, for example, a metal material such as Cu, Cu alloy, CuNi alloy, Ni, Ag, Au, or the like. Formed. The plurality of wiring parts 133 are electrically connected to the circuit part 19 formed on the lower surface 17b of the shield layer 17 through the transparent base material layer 14, the optical transparent adhesive layer 15, the transparent base material layer 16, and the shield layer 17. ing. Since the plurality of wiring parts 133 and the circuit part 19 are provided in a range corresponding to the decoration region 120, they cannot be seen from the surface of the input device 100 (the upper surface 11a of the cover layer 11).

  The shield layer 17 is formed on the entire lower surface 16b of the transparent base material layer 16 by sputtering of a transparent conductive material such as ITO, and is electrically grounded. Thereby, the electromagnetic wave emitted from the indicator 30 can be shielded, and the detection by 13 can be ensured with high accuracy.

  On the lower surface 17b of the shield layer 17, an IC housing the circuit portion 19 and a dot spacer group 18 are formed.

  The IC containing the circuit unit 19 is provided in an insulated state with respect to the shield layer 17 by, for example, bonding via an insulating adhesive. The circuit unit 19 is configured such that the user's finger or the like is placed on the upper surface 11a (static) of the cover layer 11 based on signals from the transparent electrodes 131 and 132 that are input via the connecting unit 131a, the bridge wiring 132a, and the wiring unit 133. It is calculated which position on the upper surface of the capacitive touch panel 10 is close to or in contact with. In the input device 100 according to the present embodiment, when the user brings a finger or the like close to or in contact with the upper surface 11a of the cover layer 11, it is between the finger and the first transparent electrode 131 close to the finger and the second transparent electrode. A capacitance is generated between the electrode 132 and the electrode 132. Based on the capacitance change at this time, it is possible to calculate the contact position of the finger on the upper surface 11a of the cover layer 11. As for the position of the finger, the X coordinate is detected based on the capacitance change with the first transparent electrode 131, and the Y coordinate is detected based on the capacitance change with the second transparent electrode 132. (Self-capacitance detection type). A drive voltage is applied to one of the electrode array of the first transparent electrode 131 and the electrode array of 132, and a change in capacitance between the finger is detected by the other electrode array, and the Y position is determined by 132. And a mutual capacitance detection type in which the X position is detected by the first transparent electrode 131 may be used. The input device 100 executes a predetermined process based on the calculation result by the circuit unit 19 and the display content on the display 30.

  The dot spacer group 18 includes a plurality of protrusions 18a, 18b, 18c, 18d, 18e, 18f, 18g, 18h, 18i, 18j, and 18k formed so as to protrude from the lower surface 17b of the shield layer 17 toward the display device 30. Is provided. In FIG. 2A, only the protrusions 18a to 18k arranged in the X1-X2 direction are shown, but the plurality of protrusions of the dot spacer group 18 are also arranged in the Y1-Y2 direction, and at least display It is arranged in a range corresponding to the area 110. Hereinafter, among the plurality of protrusions provided on the lower surface 17b of the shield layer 17, the protrusions 18a to 18k illustrated in FIG. 2A will be described, but the same applies to protrusions other than the protrusions 18a to 18k.

As shown in FIG. 2B, each of the protrusions 18a to 18k has a flat shape on the end surface 181 which is a lower surface facing the Z2 direction, and is translucent, transparent, and hard. It is formed by photolithography using a material such as a resin such as acrylic or silicone. FIGS. 2A and 2B show schematic shapes, but each of these protrusions 18a to 18k is the most in the surface direction of the lower surface 17b of the shield layer 17 (the direction of the surface including the X1 and X2 directions). The thickness L in the direction protruding from the lower surface 17b of the shield layer 17 (Y2 direction) satisfies the following formula (1).
0.02 ≦ H / L ≦ 0.1 (1)

  As shown in FIG. 2B, the shape of the protrusions 18a to 18k is, for example, a substantially conical shape whose outer diameter decreases toward the lower side in the Z2 direction, and the thickness H is 1 to 3 μm. Furthermore, it is preferable that the planar shape of the end surface 181 is substantially circular with a radius R of 25 to 40 μm. Further, the plurality of protrusions 18a to 18k are arranged so that the interval W is 0.1 mm or more and 0.4 mm or less in a plane including the X1 and X2 directions. The plurality of protrusions of the dot spacer group 18 occupy 0.07% or more and 5.0% or less of the range corresponding to the display area 110 in the lower surface 17b of the shield layer 17 (lower surface of the capacitive touch panel 10). Is preferred.

  The fine shapes of the projections 18a to 18k as described above can be easily realized by forming by photolithography, and it is difficult to form the projections 18a to 18k having such a shape by screen printing or the like.

  The adhesive layer 20 is formed by printing so as to be thicker than the plurality of protrusions constituting the dot spacer group 18 in the range corresponding to the decorative region 120 on the lower surface 17b of the shield layer 17. The thickness of the adhesive layer 20 in the Z1-Z2 direction is formed by a predetermined amount (for example, 0.1 mm or more and 0.3 mm or less) thicker than the thickness of the protrusion of the dot spacer group 18.

  The display 30 has a configuration in which an overcoat layer 32 is formed on the entire display surface 31a that is the upper surface of the display body 31 in the Z1 direction. Here, the display surface 31a has a flat surface and is not subjected to antireflection processing such as non-glare processing. For this reason, the display surface 31a can display a high-definition image etc. without a display blur.

  The overcoat layer 32 is translucent and transparent, and is formed by printing a hard material, for example, a resin such as acrylic or silicone. By forming the overcoat layer 32 with such a hard material, the overcoat layer 32 becomes difficult to be deformed, so that the image displayed on the display main body 31 is prevented from being distorted and blurred. be able to. Further, even when the user presses the upper surface 11a of the cover layer 11 and the dot spacer group 18 comes into contact with the overcoat layer 32, it is difficult to deform due to the hardness of the overcoat layer 32. The display of accuracy can be maintained.

  The capacitive touch panel 10 and the display device 30 are joined to each other by the adhesive layer 20, and the distance between the end surface 181 of the protrusion of the dot spacer group 18 and the display surface 31 a of the display device 30 (for example, 0) depending on the thickness of the adhesive layer 20. .1 mm or more and 0.3 mm or less).

Here, the materials constituting the protrusions 18a to 18k and the overcoat layer 32 contacted each other when the user operated the capacitive touch panel 10 as a proximity sensor with a normal force (for example, 100 g / mm ² ). It is preferable to have hardness and rigidity so that the change in shape at the time is within a predetermined range, and materials other than acrylic and silicone may be used as long as they have such properties.

  Next, the manufacturing process of the input device 100 will be described with reference to FIG. FIG. 3 is a diagram illustrating a manufacturing process of the input device 100, and is a diagram illustrating an outline of a layer configuration of the capacitive touch panel 10 and the display device 30 as in FIG.

  The input device 100 of the present embodiment includes (1) a process for manufacturing the display device 30, (2) a process for manufacturing the capacitive touch panel 10, (3) a process for forming the dot spacer group 18, 4) Manufactured by the step of joining the display 30 and the capacitive touch panel 10 together.

  In the process of manufacturing the display 30, as the display main body 31, for example, a liquid crystal display or an organic EL element display is manufactured by an existing manufacturing method, and then the overcoat layer 32 is formed on the entire display surface 31 a of the display main body 31. Is formed by printing or the like.

  As a process of manufacturing the capacitive touch panel 10, for example, (a) after forming the electrode layer 13 on the upper surface 14a of the transparent base layer 14 by sputtering, (b) the upper surface 13a of the electrode layer 13 and the transparent substrate The optical transparent adhesive layer 12 is formed so as to cover the entire upper surface 14 a of the material layer 14, and the cover layer 11 is fixed to the entire upper surface of the optical transparent adhesive layer 12 by the adhesive force of the optical transparent adhesive layer 12. Thereafter, (c) the optical transparent adhesive layer 15 is formed on the entire lower surface 14b of the transparent substrate layer 14, and the transparent substrate layer 16 is formed on the entire lower surface of the optical transparent adhesive layer 15 by the adhesive force of the optical transparent adhesive layer 15. Fix it. Finally, (d) the shield layer 17 is formed on the entire lower surface 16b of the transparent base material layer 16 by sputtering. The capacitive touch panel 10 is formed by the above steps (a) to (d) (FIG. 3A).

  In addition, as a manufacturing process of the capacitive touch panel 10, in addition to the above order, for example, after the shield layer 17 is formed on the lower surface 16 b of the transparent base material layer 16, the optical transparency is formed on the upper surface of the transparent base material layer 16. You may form the adhesion layer 15, the transparent base material layer 14, the electrode layer 13, the optical transparent adhesion layer 12, and the cover layer 11 in order. Moreover, after forming the transparent base material layer 16 on the lower surface of the transparent base material layer 14 through the optical transparent adhesive layer 15 and further forming the shield layer 17, the electrode layer 13 and the optical transparent adhesive material are formed on the transparent base material layer 14. The layer 12 and the cover layer 11 may be formed in this order.

  In the step of forming the dot spacer group 18 (FIG. 3B), the dot spacer group 18 is formed on the lower surface 17b of the shield layer 17 by photolithography. Further, the circuit portion 19 is formed in a predetermined range where the dot spacer group 18 is not formed on the lower surface 17b of the shield layer 17. The IC housing the circuit unit 19 is fixed to the shield layer 17 by an insulating adhesive printed on the lower surface 17 b of the shield layer 17. Note that either the dot spacer group 18 or the circuit portion 19 may be formed first or simultaneously.

  In the process of bonding the display 30 and the capacitive touch panel 10 to each other, first, the adhesive layer 20 is formed on the shield layer 17 by printing (FIG. 3C). The adhesive layer 20 is formed in a range that does not overlap the dot spacer group 18. Although the adhesive layer 20 is disposed at a position covering the circuit portion 19 in FIGS. 2A and 3C, the adhesive layer 20 is not limited to this and need not cover the circuit portion 19. Next, the adhesive layer 20 is bonded to the overcoat layer 32 so that the shield layer 17 and the overcoat layer 32 face each other, thereby bonding the display 30 and the capacitive touch panel 10 to each other.

Next, examples of the present embodiment will be described.
<Example 1>
Each layer of the capacitive touch panel 10 and the overcoat layer 32 were configured as follows.
Cover layer 11: glass, thickness 550 μm
Optical transparent adhesive layer 12: acrylic adhesive, thickness 100 μm
-Electrode layer 13: ITO, thickness 0.05 μm
Transparent substrate layer 14: PET, thickness 50 μm
Optical transparent adhesive layer 15: acrylic adhesive, thickness 100 μm
Transparent substrate layer 16: PET, thickness 50 μm
Shield layer 17: ITO, thickness 0.05 μm
Protrusions constituting the dot spacer group 18: formed of acrylic, the height is 1.5 μm, and the end surface 181 (FIG. 2B) has a conical shape with a circle having a diameter (2 · R) of 30 μm.

According to this shape, the ratio between the thickness H of the protrusion and the maximum width L of the protrusion is 1.5 / 30 = 0.05.
-Adhesive layer 20: thickness 0.3 mm
-Overcoat layer 32: acrylic, thickness 3 μm
-The space | interval (pitch) of protrusion in the lower surface 17b of the shield layer 17: 0.1-0.7 mm

  In this configuration, the occupation ratio in which the plurality of protrusions occupy the lower surface 17b of the shield layer 17 is as follows.

Spacing between projections (unit: mm): Occupancy rate (unit:%)
0.1: 7.065
0.2: 1.76625
0.3: 0.78500
0.4: 0.44156
0.5: 0.28260
0.6: 0.19625
0.7: 0.14418
0.8: 0.11039
0.9: 0.08722
1.0: 0.07065

When the pressing force was released when the upper surface 11a of the cover layer 11 was pressed down to bring the protrusions into contact with the overcoat layer 32, the time until the protrusions separated from the overcoat layer 32 was measured. The results are as follows:
○ indicates that the protrusion has separated from the overcoat layer 32 in less than 0.1 second after the release of the cover layer 11 is released,
Δ indicates that the protrusion is separated from the overcoat layer 32 in 0.1 second or more and less than 1 second after the pressing of the cover layer 11 is stopped,
X indicates that the protrusions were kept in contact with the overcoat layer 32 for 1 second or more after releasing the depression.

Protrusion spacing (unit: mm): Evaluation 0.1, 0.2, 0.3, 0.4: ○
0.5: △
0.6, 0.7, 0.8, 0.9, 1.0: x

  From the above results, if the distance between the protrusions is in the range of 0.1 to 0.4 mm, the protrusions are immediately separated from the overcoat layer 32, so that the display on the display device 30 can be prevented from blurring.

<Example 2>
In Example 2, the protrusions constituting the dot spacer group 18 are made of acrylic, the height is 1.5 μm, and the end surface 181 (FIG. 2B) has a conical shape with a circle having a diameter (2 · R) of 50 μm. did.

  According to this shape, the ratio of the thickness H of the protrusion to the maximum length L of the protrusion is 1.5 / 50 = 0.03.

  The configurations of the layers other than the dot spacer group 18 and the overcoat layer 32 of the capacitive touch panel 10 are the same as those in the first embodiment.

  In this configuration, the occupation ratio in which the plurality of protrusions occupy the lower surface 17b of the shield layer 17 is as follows.

Spacing between projections (unit: mm): Occupancy rate (unit:%)
0.1: 19.625
0.2: 4.90625
0.3: 2.8056
0.4: 1.22656
0.5: 0.78500
0.6: 0.54514
0.7: 0.40051
0.8: 0.30664
0.9: 0.24228
1.0: 0.19625

When the same evaluation as in Example 1 was performed, the following results were obtained.
Protrusion spacing (unit: mm): Evaluation 0.1, 0.2, 0.3, 0.4: ○
0.5: △
0.6, 0.7, 0.8, 0.9, 1.0: x

  From the above results, if the distance between the protrusions is in the range of 0.1 to 0.4 mm, the protrusions are immediately separated from the overcoat layer 32, so that the display on the display device 30 can be prevented from blurring.

With the configuration described above, the following effects are achieved according to the above embodiment.
(1) For the protrusions 18a to 18k constituting the dot spacer group 18, the maximum width L in the X1-X2 direction (surface direction of the lower surface of the capacitive touch panel 10) and the thickness H in the Z2 direction (projection direction) are The following expression (1) is satisfied.
0.02 ≦ H / L ≦ 0.1 (1)

  According to this structure, since several protrusion 18a-18k becomes the shape which spread in the X1-X2 direction, the dent between adjacent protrusions is shallow. Therefore, even when the plurality of protrusions 18a to 18k come into contact with the overcoat layer 32 when the cover layer 11 is pressed by the user, the overcoat layer 32 is difficult to enter between adjacent protrusions. The coat layer 32 tends to be immediately separated from the protrusions 18 a to 18 k and the shield layer 17. For this reason, generation | occurrence | production of the blur of the display of the indicator 30 by a user's operation can be suppressed, and a high-definition display can be implement | achieved.

(2) Since the display surface 31a of the display device 30 is flat and not subjected to antireflection treatment, it does not diffuse or diffusely reflect the light emitted from the display device body 31. The occurrence of bleeding can be suppressed.

(3) Since the plurality of projections 18a to 18k are arranged at intervals (pitch) of 0.1 mm or more and 0.4 mm or less, even if the projections 18a to 18k contact the overcoat layer 32, the adjacent projections The overcoat layer 32 is difficult to enter. For this reason, the overcoat layer 32 is easily separated from the protrusions 18a to 18k and the shield layer 17 immediately, thereby suppressing the occurrence of blurring of the display on the display unit 30 by the user's operation.

(4) The plurality of protrusions 18 a to 18 k occupy 0.07% or more and 5.0% or less of the range corresponding to the display area 110 on the lower surface of the capacitive touch panel 10. Thus, since the ratio which the some protrusion 18a-18k occupies is small enough, even if the shield layer 17 and the overcoat layer 32 contact, it will be easy to isolate | separate immediately.

(5) Since the distance between the lower surfaces of the plurality of protrusions 18a to 18k and the display surface 31a of the display device 30 is set to 0.1 mm or more and 0.3 mm or less, the input device 100 is made thinner and the capacitive touch panel 10 is used. And ease of separation of the overcoat layer 32 can be achieved.

(6) By forming the plurality of protrusions 18a to 18k by photolithography, an end surface having a small diameter and a flat shape can be formed. It becomes possible to make it. In addition, since the flat end face can suppress the irregular reflection of the incident light from the display device 30, the display by the display device 30 can be prevented from being blurred or disturbed, and the high definition. Display can be realized.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and can be improved or changed within the scope of the purpose of the improvement or the idea of the present invention.

  As described above, the input device according to the present invention is useful for a thin and high-definition input device including a capacitive touch panel.

DESCRIPTION OF SYMBOLS 10 Capacitive touch panel 11 Cover layer 12, 15 Optical transparent adhesion layer 13 Electrode layer 14, 16 Transparent base material layer 17 Shield layer (conductive layer)
18 dot spacer group 18a, 18b, 18c, 18d, 18e, 18f, 18g, 18h, 18i, 18j, 18k Protrusion 19 Circuit part 20 Adhesive layer 30 Display 31 Display body 31a Display surface 32 Overcoat layer 100 Input device 110 Display area 120 Decoration area 181 End face

Claims (5)

A capacitive touch panel,
A display surface arranged to face the lower surface of the capacitive touch panel,
On the lower surface of the capacitive touch panel, a dot spacer group consisting of a plurality of protrusions having translucency and a flat end face shape is formed so as to protrude to the display side,
The projections are satisfied and the maximum width L of the lower surface of the surface direction of the capacitive touch panel, the thickness H in the protruding direction, but the following equation (1),
0.02 ≦ H / L ≦ 0.1 (1)
The input device , wherein the plurality of protrusions are arranged at intervals of 0.1 mm or more and 0.4 mm or less . A capacitive touch panel,
A display surface arranged to face the lower surface of the capacitive touch panel,
On the lower surface of the capacitive touch panel, a dot spacer group consisting of a plurality of protrusions having translucency and a flat end face shape is formed so as to protrude to the display side,
The protrusion has a maximum width L in the surface direction of the lower surface of the capacitive touch panel and a thickness H in the protruding direction satisfy the following formula (1):
0.02 ≦ H / L ≦ 0.1 (1)
Input device the distance between the display surface of the display and the lower surface of the projection, characterized in that at 0.1mm or 0.3mm or less. The input device according to claim 2 , wherein the plurality of protrusions are arranged at intervals of 0.1 mm to 0.4 mm. The input device according to claim 1, wherein a display surface of the display device is flat and is not subjected to antireflection treatment. The said capacitive touch panel functions as a proximity sensor which detects that the user approached the upper surface of the said capacitive touch panel, The any one of Claims 1-4 characterized by the above-mentioned. Input equipment.

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