JP4896178B2 - Coordinate input device and image display device and electronic apparatus provided with the same - Google Patents

Description

  The present invention relates to a coordinate input device, an image display device including the coordinate input device, and an electronic apparatus, and more particularly, to a coordinate input device capable of inputting coordinates by scanning an operation surface with an indicator. The present invention relates to an image display device and an electronic apparatus including such an image display device.

In recent years, as a display unit of an electronic device such as a portable information terminal, a transparent tablet (touch panel) has been used as a liquid crystal display unit in order to directly operate an object such as a menu item displayed on the display unit with an indicator such as a finger or a pen. What is arrange | positioned at the front side of is known. FIG. 5 is a cross-sectional view showing an example of a liquid crystal display device including such a tablet.
The liquid crystal display device 100 shown in FIG. 5 has a configuration in which a tablet 130 is disposed on the front side of the liquid crystal display unit 120. The liquid crystal display unit 120 sandwiches a liquid crystal layer 123 sealed with a sealing material 124 between an upper substrate 121 and a lower substrate 122 that are arranged to face each other. A liquid crystal control layer 126 made of an electrode, an alignment film or the like is formed on the liquid crystal layer 123 side, and an inner surface side (liquid crystal layer 123 side) of the lower substrate 122 is made of a highly reflective metal thin film such as aluminum or silver. A reflective layer or a transflective layer 127 in which a through hole is formed in the metal thin film, and a liquid crystal control layer 128 made of an electrode, an alignment film, and the like are sequentially stacked on the lower substrate 122.

The tablet 130 has a configuration in which a transparent upper substrate 131 and a lower substrate 132 that are arranged to face each other are bonded and integrated by an adhesive layer 136. A first electrode layer 133 is formed on the inner surface side (upper substrate 131 side) of the lower substrate 132, and insulating spacers (not shown) are formed on the first transparent electrode layer 133 at intervals. ing. A second transparent electrode layer 134 is formed on the inner surface side (lower substrate 132 side) of the upper substrate 131.
A lower printed circuit 137 such as a lead circuit made of a conductive paste in which a conductive metal filler is dispersed in a resin and a connection electrode part connected to the lead circuit is formed on the peripheral portion on the inner surface side of the lower substrate 132. The first transparent electrode layer 133 is connected to the printed circuit 137. Further, an upper printed circuit 138 such as a lead circuit made of a conductive paste in which a conductive metal filler is dispersed in a resin or a connection electrode part connected to the lead circuit is formed on the peripheral portion on the inner surface side of the upper substrate 131. The second transparent electrode layer 134 is connected to the printed circuit 138.
Further, in such a type of tablet 130, since the upper substrate 131 is formed of a transparent base material, the printed circuits 137 and 138 are transparent from the operation surface side, so that a frame usually called a bezel is used. The body 145 is provided at the outer peripheral edge of the upper substrate 131 so as to cover the printed circuit formation region (see, for example, Patent Document 1).

The tablet 130 having the above configuration is a resistance contact type tablet, and the first and second transparent electrode layers 133 are separated by the formed film thickness of the adhesive layer 136 and the printed circuits 137 and 138 and the spacers when not operated. , 134 is pressed by the indicator 140 to bend the upper substrate 131, and the transparent electrode layers 133, 134 are brought into electrical contact with the pressed portion to input coordinates.
In actuality, the tablet 130 is fixed to the liquid crystal display unit 120 via the support member 139. When the tablet 130 is fixed, the tablet 130 and the liquid crystal display unit 120 are separated from each other with a predetermined interval. It has become so.

  According to the liquid crystal display device 100 configured as described above, it is possible to perform display using the liquid crystal display unit 120, and by scanning the upper surface of the tablet 130 with the indicator 140 (in the drawing, a pen-type indicator), Coordinate input can be performed. Therefore, for example, when an operation of selecting an object such as a menu item displayed on the liquid crystal display unit 120 is performed, the selection operation can be performed by pressing the display position of the object with the indicator 140.

JP-A-10-104374

However, in the liquid crystal display device 100 configured as described above, since the frame body 145 is provided on the outer peripheral side of the upper substrate 131 of the tablet 130, the liquid crystal display device 100 is, for example, a mobile phone 601 as shown in FIG. When the display unit 601e is mounted, there is a problem that the thickness of the mobile phone is increased, and the frame 145 is seen when the display unit is visually recognized, and the appearance is poor.
Further, if the above-described frame body 145 is provided on the upper surface of the tablet 130 (the outer surface of the upper substrate 131), there is a step portion between the operation surface (the outer surface of the upper substrate 131) and the frame body 145. When scanning the upper surface of the tablet 130, there is a problem that it is inconvenient, unusable, and dust or the like easily adheres to the stepped portion.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a coordinate input device that can improve appearance and easily input coordinates by scanning an operation surface with a pointer. To do.
In addition, the present invention includes the coordinate input device as described above, so that when mounted on a display unit of an electronic device such as a mobile phone, the thickness of the electronic device can be reduced, and the step portion between the frame and the operation surface. An object of the present invention is to provide an image display device that can prevent adhesion of dust and the like due to the above.
It is another object of the present invention to provide a thin electronic device that is provided with the image display device as described above, has good appearance and convenience, and can improve adhesion of dust and the like to the display portion. .

In order to solve the above problems, the present invention employs the following configuration.
In the coordinate input device of the present invention, the first light-transmitting substrate and the second light-transmitting substrate having flexibility in which one surface side is the operation surface side are arranged to face each other with an insulating layer interposed therebetween. A transparent conductive film is formed on the inner surface side of each translucent substrate, a printed circuit connected to the transparent conductive film is formed on the outer peripheral portion, and printing is performed on the first and second translucent substrates. A coordinate input device capable of detecting the coordinates of the pressed position by detecting the voltage output from the printed circuit to which the voltage is alternately applied to the circuit and the voltage is not applied,
A decorative printing sheet is formed on the outer surface of the second light-transmitting substrate, and a printed circuit formed on the outer peripheral portion of the first and second light-transmitting substrates is concealed by the decorative printing sheet, and It is installed so that it cannot be visually recognized from the operation surface side of the second translucent substrate , and the decorative print sheet is composed of a sheet-like film and a decorative print layer formed in a rectangular frame shape in plan view on the outer periphery thereof. The decorative printing sheet is attached to the outer surface of the second light-transmitting substrate via an adhesive layer provided so as to cover the lower surface side of the sheet-like film and the lower surface side of the decorative printing layer, The pressure-sensitive adhesive layer is attached to the outer surface of the second light-transmissive substrate corresponding to at least the entire surface corresponding to the operation surface of the second light-transmissive substrate, and the upper surface of the decorative print layer and the pressure-sensitive adhesive layer top is flush to wherein the sheet film is placed flat .

In the coordinate input device of the present invention, the decorative print sheet as described above is formed on the outer surface of the second light-transmitting substrate, so that the coordinate input device is operated on the operation surface side of the second light-transmitting substrate. The printed circuit is not visible during observation, and the decorative printed sheet is decorated with patterns, characters, marks, patterns, etc., so it looks good and has a good appearance. .
In addition, the decorative printing sheet is formed on the outer surface side of the second light-transmitting substrate, but since it is a sheet-like material, the thickness can be made very thin, so the outer surface of the second light-transmitting substrate. Can be a substantially flat surface, and does not get in the way when scanning the outer surface of the second light-transmitting substrate with an indicator or the like, and is easy to use. Further, since the outer surface of the second light-transmitting substrate can be a substantially flat surface, a hard coat layer having wear resistance can be provided on the outer surface of the second light-transmitting substrate. Thus, the second translucent substrate can be protected.

An image display device of the present invention is characterized in that the coordinate input device of the present invention having any one of the above configurations is provided on the front surface of an image display device such as a liquid crystal display device or an organic EL display device.
In the image display device of the present invention, the flatness of the outer surface side of the second translucent substrate is good, and the coordinate input device of the present invention having any one of the above-described configurations is a front surface of the image display device. Therefore, it is easy to input coordinates by scanning the operation surface of the coordinate input device with an indicator, and to smoothly select an object such as a menu item displayed on the image display device. In addition, the image display device can be thinned. In addition, since the coordinate input device of the present invention having good flatness on the outer surface side of the second translucent substrate is provided, an operation surface such as a conventional type tablet provided with a frame body such as a bezel on the outer surface; Since there is no step portion of the frame, it is possible to prevent adhesion of dust or the like due to such a step portion.
Moreover, since the coordinate input device of the present invention in which the printed circuit is concealed by the decorative printed sheet as described above is provided, the printed circuit is not seen and the appearance can be improved.

As described above, according to the present invention, it is possible to provide a coordinate input device that can improve appearance and easily input coordinates by scanning the operation surface with an indicator.
In addition, according to the image display device of the present invention, by providing the coordinate input device of the present invention, when mounted on a display unit of an electronic device such as a mobile phone, the thickness of the electronic device can be reduced, and the frame and operation It is possible to prevent adhesion of dust or the like due to the stepped portion with the surface.
Moreover, the electronic device of the present invention can provide a thin electronic device that can improve the appearance and usability of dust and the like from adhering to the display portion by including the image display device of the present invention.

FIG. 1 is a schematic sectional view showing an embodiment of a liquid crystal display device provided with a coordinate input device according to the present invention. FIG. 2 is a schematic cross-sectional view showing another embodiment of the coordinate input apparatus according to the present invention. FIG. 3 is a schematic cross-sectional view showing another embodiment of the coordinate input apparatus according to the present invention. FIG. 4 is a perspective view illustrating an example of an electronic apparatus including the liquid crystal display device according to the present invention. FIG. 5 is a cross-sectional view illustrating an example of a liquid crystal display device including a conventional tablet. FIG. 6 is a cross-sectional view illustrating an example of a mobile phone including a conventional liquid crystal display device in a display unit.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings below, the film thicknesses and dimensional ratios of the respective components are appropriately changed for easy understanding of the drawings.
(Embodiments of coordinate force device and image display device)
FIG. 1 is a schematic cross-sectional view of a liquid crystal display device which is a basic form of an image display device of the present invention. The liquid crystal display device 10 includes a liquid crystal display unit 20 and an analog resistive film type touch panel (coordinate input device) 30 according to an embodiment of the present invention disposed on the front surface thereof.
The liquid crystal display unit 20 sandwiches a liquid crystal layer 23 sealed with a sealing material 24 between an upper substrate 21 and a lower substrate 22 that are arranged to face each other. A liquid crystal control layer 26 made of an electrode, an alignment film, etc. is formed on the liquid crystal layer 23 side, and an inner surface side (liquid crystal layer 123 side) of the lower substrate 22 is made of a highly reflective metal thin film such as aluminum or silver. A reflective layer 27 and a liquid crystal control layer 28 made of an electrode, an alignment film, and the like are sequentially stacked on the lower substrate 22.
The liquid crystal display unit 20 is of a reflective type, and external light incident from the outside is reflected by the reflective layer 27 to perform display.

  The touch panel 30 includes an upper translucent substrate (second translucent substrate, operation-side substrate) 31 and a lower translucent substrate (first translucent substrate, fixed-side substrate) that are arranged to face each other. ) 32 are joined and integrated by a substantially annular adhesive layer 36, and a space is provided between the upper translucent substrate 31 and the lower translucent substrate 32. The upper translucent substrate 31 is made of a flexible material such as a transparent film. The lower translucent substrate 32 is made of a transparent glass substrate, a plastic substrate, or a plastic film.

A first transparent conductive film 33 is formed on the inner surface side (upper light transmissive substrate 31 side) of the lower light transmissive substrate 32, and an insulating layer (insulator) is formed on the first transparent conductive film 33. Spacers (not shown) are formed at intervals. The upper translucent substrate 31 and the lower translucent substrate 32 are arranged to face each other with the insulating layer interposed therebetween.
A lower printed circuit (such as a lead-out circuit made of a conductive paste in which a conductive metal filler is dispersed in a resin or a connection electrode part connected to the lead-out circuit is provided on the outer peripheral portion on the inner surface side of the lower translucent substrate 32. The first printed circuit 37) is formed, and the printed circuit 37 is connected to the first transparent conductive film 33.

A decorative print layer 41 is formed on the outer peripheral portion of the upper translucent substrate 31 on the inner surface side (lower translucent substrate 32 side). The decorative printing layer 41 has a very thin thickness formed by a printing method such as screen printing, gravure printing, and offset printing, a transfer method, or a vapor deposition method. The decorative print layer 41 is provided with a decoration such as a pattern, a character, a mark, a pattern, and coloring. The thickness of the decorative print layer 41 is, for example, about 0.01 to 100 μm.
The range in which the decorative print layer 41 is formed is an upper position of a lower print circuit (first print circuit) 37 and an upper print circuit (second print circuit) 38 to be described later. When viewed from the conductive substrate 31 side (the operation surface side of the second light-transmissive substrate), the lower printed circuit (first printed circuit) 37 and the upper printed circuit (second printed circuit) described later are The position is hidden by the decorative print 41 and cannot be viewed (visually confirmed).

  Since the decorative printing layer 41 is thin as described above, there is almost no step between the inner surface of the upper translucent substrate 31 and the decorative printing layer 41, but the inner surfaces of these upper translucent substrates 31. Further, the flatness is improved by covering the decorative print layer 41 with an overcoat layer 42 having transparency. Examples of the material of the overcoat layer 42 having transparency include an ultraviolet curable acrylic resin cured layer and a siliceous layer made of a compound derived from polysilazane. Further, as the material of the overcoat layer 42, a material having excellent adhesion with the decorative printing layer 41, a second transparent conductive film 34 described later, and the upper translucent substrate 31 can be used. It is preferable at the point which can improve the adhesiveness of the transparent conductive film 34 and the decorating printing layer 41. FIG. The overcoat layer 42 can be formed by an in-mold molding method described later in addition to the printing method, the transfer method, and the vapor deposition method.

A second transparent conductive film 33 is formed on the inner surface side of the overcoat layer 42. These first and second transparent conductive films 32 and 34 are both made of a transparent conductive material such as indium tin oxide (ITO).
Further, an upper printed circuit (such as a lead circuit made of a conductive paste in which a conductive metal filler is dispersed in a resin, or a connection electrode part connected to the lead circuit, is provided on the outer peripheral portion on the inner surface side of the upper translucent substrate 31. (Second printed circuit) 38 is formed, and the second transparent conductive film 34 is connected to the printed circuit 38.

  In order to form the overcoat layer 42 by an in-mold molding method, a transfer film comprising a support sheet and a decorative printing layer 41 formed on one surface of the support sheet is prepared, and the upper translucent layer is formed from the transfer film. After the decorative print layer 41 is transferred to the conductive substrate 31, it is placed in an injection mold, and then a resin having good adhesion to the substrate 31 or the like is injection molded into the mold. 42 can be formed.

The touch panel 30 is fixed to the liquid crystal display unit 20 via a support member 39. When the touch panel 30 is fixed, the touch panel 30 and the liquid crystal display unit 20 are separated from each other with a predetermined interval. It is like that.
The touch panel 30 having the above configuration is of a resistance contact type, and when not operated, the first and second transparent conductive films 33 separated by the formed film thickness of the adhesive layer 36 and the printed circuits 37 and 38 and the spacers. , 34 is pressed by the indicator 40 or the like to bend the upper light-transmitting substrate 31, and the first and second transparent conductive films 33 and 34 are brought into electrical contact with each other at the pressed portion. The coordinates of the pressed position can be detected by detecting the voltage output from the printing circuit to which the voltage is alternately applied to the printing circuits 37 and 38 and the voltage is not applied.

  According to the liquid crystal display device 10 having the above configuration, display using the liquid crystal display unit 20 can be performed, and the operation surface (upper translucency) of the touch panel 30 is indicated by the indicator 40 (pen-type indicator in the drawing). Coordinate input can be performed by scanning the surface of the substrate 31. Therefore, for example, when an operation for selecting an object such as a menu item displayed on the liquid crystal display unit 20 is performed, the selection operation can be performed by pressing the display position of the object with the indicator 40.

In the touch panel 30 configured as described above, the decorative print layer 41 is formed between the second transparent conductive film 34 formed on the inner surface side of the second light-transmitting substrate 31 and the second light-transmitting substrate 31. Since the printed circuits 37 and 38 formed on the outer peripheral portions of the first and second translucent substrates are concealed by the decorative print layer 41, the touch panel 30 is operated by the second translucent substrate. The first and second printed circuits 37 and 38 are not visible when viewed from the surface side (the upper surface side of the second translucent substrate), and the decorative printed layer 41 is decorated. Therefore, it looks good and the appearance is good.
Further, since the decorative printing layer 41 is formed on the inner surface side of the second light-transmitting substrate 31, the outer surface of the second light-transmitting substrate 31 can be a flat surface, and the bezel is placed on the outer surface of the tablet. There is no stepped portion with the operation surface as in the conventional type provided with a frame such as a frame, so that it does not get in the way when the operation surface is scanned with the indicator 40 or the like, and it is easy to use.

In addition, the decorative print layer 41 can be formed by the above printing method, transfer method, or vapor deposition method, so that the thickness can be very thin, and the step between the inner surface of the second translucent substrate 31 and the decorative print layer 41 can be reduced. Therefore, the touch panel 30 of this embodiment can be made thinner than a conventional type in which a frame body such as a bezel is provided on the outer surface of the tablet.
Further, in the touch panel 30 of the present embodiment, the overcoat layer 42 is formed between the transparent conductive film 34 formed on the inner surface side of the second translucent substrate 31 and the decorative print layer 41. The flatness on the inner surface side of the second translucent substrate 31 can be improved.

In the liquid crystal display device 10 of the present embodiment, the flatness of the outer surface side of the second light transmissive substrate 31 is good, and the thin touch panel 30 is provided on the front surface of the liquid crystal display unit 20. It is easy to input coordinates by scanning the operation surface with the indicator 40, etc., and an operation for selecting an object such as a menu item displayed on the liquid crystal display unit can be smoothly performed. A liquid crystal display device can be obtained. Further, since the touch panel 30 having good flatness on the outer surface side of the second translucent substrate 31 is provided, an operation surface and a frame body, such as a conventional type tablet, in which a frame body such as a bezel is provided on the outer surface. Since there is no step portion, it is possible to prevent adhesion of dust or the like due to such a step portion.
In addition, since the touch panel 30 in which the first and second printed circuits 37 and 38 are concealed by the decorative printed layer 41 is provided, the first and second printed circuits 37 and 38 are not visible and look good. Is good.

In the liquid crystal display device of the above embodiment, the case where the touch panel 30 as shown in FIG. 1 is provided on the front surface of the liquid crystal display unit 20 has been described. However, as the touch panel, the touch panel 30a as shown in FIG. A touch panel 30b as shown in FIG. 3 may be used.
The touch panel 30a shown in FIG. 2 is different from the touch panel 30 shown in FIG. 1 in that the decorative printing that conceals the first and second printed circuits 37 and 38 on the outer peripheral portion of the second translucent substrate 31 is performed. The sheet 41a is formed, and the second printed circuit 37 connected to the second transparent conductive film 33 is formed on the outer peripheral portion on the inner surface side of the second translucent substrate 31.
The decorative print sheet 41a is a decorative print of a pattern, characters, marks, patterns, etc. by a printing method such as screen printing, gravure printing, offset printing, a transfer method, or a vapor deposition method on a sheet-like film 44a having a rectangular frame shape in plan view. The layer 44b is formed, and the thickness is very thin. Further, an adhesive layer (not shown) is formed on the lower surface side of the decorative print layer 44b. The thickness of the decorative printing sheet 41a is, for example, about 0.015 mm to 0.3 mm.

The decorative printed sheet 41a before being provided on the outer surface of the second translucent substrate 31 has the adhesive layer side surface adhered to the support sheet, and after peeling the support sheet, the adhesive layer side surface is removed. The decorative print sheet 41a can be formed on the outer surface of the second light-transmitting substrate by being attached to the outer surface of the second light-transmitting substrate 31.
Since this decorative printing sheet 41a is formed on the outer surface side of the second light-transmitting substrate 31, it is not over the inner surface side of the second light-transmitting substrate 31 as provided by the touch panel 30 in FIG. The coat layer 42 is not formed.
Further, since the decorative printing sheet 41a is thin as described above, there is almost no step between the outer surface of the second translucent substrate 31 and the decorative printing sheet 41a. 30a can be made thin compared with the conventional type which provided frame bodies, such as a bezel, on the outer surface of a tablet.

The touch panel 30b shown in FIG. 3 is different from the touch panel 30 shown in FIG. 1 in that the decorative printing for concealing the first and second printed circuits 37 and 38 on the outer peripheral portion of the second translucent substrate 31 is performed. The sheet 41b is formed, and the second printed circuit 37 connected to the second transparent conductive film 33 is formed on the outer peripheral portion on the inner surface side of the second translucent substrate 31.
The decorative printed sheet 41b has a pattern, characters, marks, patterns, etc. on the outer periphery of a rectangular sheet-like film 44a 'by a printing method such as screen printing, gravure printing, offset printing, transfer method, or vapor deposition method. The decorative print layer 44b is formed in a rectangular frame shape in plan view, and is very thin. An adhesive layer 44c is formed on the lower surface side of the sheet-like film 44a ′ and the decorative print layer 44b. The decorative print sheet 41b is particularly different from the decorative print sheet 41b of FIG. 2 in that the shape of the sheet-like film is rectangular in plan view, and the adhesive layer 44c is decorated with the lower surface of the sheet-like film 44a ′. It is a point formed so as to cover the lower surface of the printing layer 44b. Therefore, it is desirable that the adhesive layer 44c is excellent in transparency and has good bubble removability at the time of attachment.
The thickness of the decorative printing sheet 41b is, for example, about 0.015 mm to 0.3 mm.

  The decorative printed sheet 41b before being provided on the outer surface of the second translucent substrate 31 has the adhesive layer side surface stuck to the support sheet, and after peeling the support sheet, the adhesive layer side surface is removed. The decorative print sheet 41b can be formed on the outer surface of the second light-transmitting substrate by being attached to the outer surface of the second light-transmitting substrate 31.

  In the touch panel shown in FIGS. 2 and 3, the decorative printing sheet as described above is formed on the outer surface of the second light-transmitting substrate 31, so that the touch panel is operated on the operation surface of the second light-transmitting substrate 31. When viewed from the side, the printed circuits 37 and 38 are not visible, and the decorative printed sheet is decorated, so that the appearance is good and the appearance is good.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. In the above embodiment, the case where the image display device of the present invention is applied to a reflective liquid crystal display device has been described. However, a front light (illumination device) may be provided between the coordinate input device and the liquid crystal display unit.

(Form of electronic equipment)
FIG. 4 is a perspective view showing an example of a mobile phone (electronic device) provided with the liquid crystal display device of the previous embodiment according to the present invention.
In a mobile phone 301 shown in FIG. 4, an upper housing 301a and a lower housing 301b are connected to each other by a hinge 301c so as to be unfolded, and a display portion 301e is provided on the operation surface 301d side of the upper housing 301a. The display unit 301e is provided with the liquid crystal display device 10 of the previous embodiment with the touch panel 30 side up. Further, an input keyboard 301k for performing a dial operation or the like is provided on the operation surface 301j of the lower housing 301b.
In the cellular phone 301 according to the present embodiment, the display unit 301e includes the liquid crystal display device 10 according to the previous embodiment, so that the appearance and the usability are improved, and the display unit is improved in terms of dust and the like. It can be a mobile phone.

DESCRIPTION OF SYMBOLS 10 ... Liquid crystal display device (image display device), 20 ... Liquid crystal display unit, 30, 30a, 30b ... Touch panel (coordinate input device), 31 ... Upper translucent board | substrate (2nd translucent board | substrate), 32 ... Lower Side translucent substrate (first translucent substrate), 33 ... first transparent conductive film, 34 ... second transparent conductive film, 37 ... lower printed circuit (first printed circuit), 38 ... upper side Print circuit (second print circuit), 41, 44b ... decorative print layer, 41a, 41b ... decorative print sheet, 42 ... overcoat layer, 44a ... sheet-like film, 44c ... adhesive layer, 301 ... mobile phone ( Electronic device), 301e... Display unit.

Claims (3)

A first light-transmitting substrate and a flexible second light-transmitting substrate whose one surface side is the operation surface side are disposed to face each other with an insulating layer interposed therebetween, and the inner surfaces of the respective light-transmitting substrates. the transparent conductive film is formed on the side, printed circuit connected to the transparent conductive film is formed on an outer peripheral portion, the first, a voltage is applied alternately to the printed circuit formed on the second light-transmitting substrate A coordinate input device capable of detecting coordinates of a pressed position by detecting a voltage output from a printed circuit to which no voltage is applied,
A decorative printing sheet is formed on the outer surface of the second light-transmitting substrate, and a printed circuit formed on the outer peripheral portion of the first and second light-transmitting substrates is concealed by the decorative printing sheet, and It is installed so that it cannot be seen from the operation surface side of the second translucent substrate ,
The decorative printing sheet is composed of a sheet-like film and a decorative printing layer formed in a rectangular frame shape on the outer periphery of the sheet-like film, and covers the lower surface side of the sheet-like film and the lower surface side of the decorative printing layer. The decorative printing sheet is attached to the outer surface of the second light-transmitting substrate through the adhesive layer provided on the
The pressure-sensitive adhesive layer is attached to the outer surface of the second light-transmissive substrate corresponding to at least the entire surface corresponding to the operation surface of the second light-transmissive substrate, and the upper surface of the decorative print layer and the pressure-sensitive adhesive layer A coordinate input device characterized in that the upper surface is flush and the sheet-like film is arranged flat . An image display device comprising the coordinate input device according to claim 1 on a front surface of the image display device. An electronic apparatus comprising the image display device according to claim 2 in a display unit.

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