JP2008287670A - Protection panel with touch input function for electronic apparatus display window - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protection panel with touch input function for an electronic apparatus display window, which can narrow a frame size. <P>SOLUTION: In the protection panel with touch input function for the electronic apparatus display window, an inside edge of a frame-like pasting material for use in adhesion between an upper electrode sheet and a lower electrode panel is partially or entirely brought close to an active area securing the input function, except corner parts. Consequently, the active area (input area) securing the input function is easily widened in the case that external dimensions of the protection panel with touch input function have been determined, and an external shape of the protection panel with touch input function is easily miniaturized in the case that dimensions of the input area have been determined. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is used for applications such as PDAs, handheld terminals and other portable information terminals, copiers, facsimiles and other office equipment, smartphones, mobile phones, portable game machines, electronic dictionaries, car navigation systems, small PCs, various home appliances, etc. The present invention relates to a protective panel with a touch input function that can be easily framed.

  A casing in an electronic device such as a mobile phone or a smartphone is generally configured by combining a front casing and a rear casing made of synthetic resin. Specifically, a protective panel is fixed to the surface of the front casing by fusion or the like in order to protect the display window of the display 20 such as an LCD. Conventionally, a colorless and transparent resin panel has been used as the protective panel. However, with the trend toward fashion of electronic devices, decoration such as bordering has been given by printing.

  In recent years, a cellular phone is expected to have an input device function on the protective panel as shown in FIG. 15 as the next interface, and is disclosed in, for example, Patent Document 1.

  The protection panel 1 with a touch input function of the electronic device display window will be described in more detail with reference to the exploded view of FIG. In the figure, a protection panel 100 with a touch input function for an electronic device display window includes a lower transparent electrode 5 and a lower circuit 7a provided around the lower transparent electrode 5 on the upper surface of a non-flexible protection panel body 3a. 7b, an upper transparent electrode 4 provided at a position facing the lower transparent electrode 5 on the lower surface of the flexible transparent insulating film, and an upper portion provided around the upper transparent electrode 4 An upper electrode sheet 102a having circuits 6a, 6b, 7a, 7b, and having a gap between the lower electrode panel 103 and the electrodes 4, 5 formed by a frame-like paste material 108 (not shown) and bonded at the periphery. And a decorative sheet 102b having a decorative layer for concealing the lower circuits 7a and 7b and the upper circuits 6a and 6b with a pattern 17 to form a transparent window 18 on a flexible transparent insulating film. Tama It has become.

  On the inner surfaces of the upper electrode sheet 102a and the lower electrode panel 103, ITO (indium oxide / tin) or the like is formed in a rectangular shape as the transparent electrodes 4 and 5 by sputtering or vacuum deposition. A strip-shaped bus bar made of a silver paste connected to the transparent electrode 4 is formed in parallel on the upper electrode sheet 102a, and a silver paste connected to the transparent electrode 5 in a direction perpendicular to the bus bar is formed on the lower electrode panel 3. A band-shaped bus bar is formed. Each bus bar has a circuit extending to a connecting portion provided at an edge of the upper electrode sheet 102a and is gathered at one place.

  The decorative sheet 102b is bonded to the entire front surface of the upper electrode sheet 102a with a transparent paste (not shown) (the upper electrode sheet and the entire sheet laminated on the surface thereof are referred to as a movable sheet), and a finger or pen When the surface of the decorative sheet 102b is pressed with, for example, the movable sheet 102 is integrally bent downward, and as a result, the transparent electrodes 4 and 5 formed on the inner surfaces of the upper electrode sheet 102a and the lower electrode panel 103 are The input position is detected by contact.

International Publication No. 2005/064451 Pamphlet

  FIG. 17 shows the relationship between the active area 15 that guarantees the input function of the protection panel 100 with a touch input function in the prior art and the frame-shaped paste material 108. In the protection panel 100 with a touch input function, the frame-like paste material 108 that bonds the lower electrode panel 103 and the upper electrode sheet 102a at the peripheral edge by forming a gap between the electrodes 4 and 5, The distance from the rectangular inner edge of the adhesive material 108 to the active area (input area) 15 that guarantees the input function is ensured anywhere over a certain distance. The distance to be secured is about 2 mm to 10 mm.

  As described above, when the surface of the decorative sheet 102b is pressed with a finger or a pen, the movable sheet 102 is integrally bent downward, and as a result, is formed on the inner surfaces of the upper electrode sheet 102a and the lower electrode panel 103. The input position is detected by the contact of each transparent electrode 4, 5, but the input load by this finger, pen, etc. becomes heavy near the inner edge of the glue material 108, so that the active contact with the electrodes 4, 5 reliably The distance is necessary between the area 15 and the inner edge of the paste material 108.

  However, it has been difficult to narrow the frame unless the distance from the rectangular inner edge of the glue material to the input area has to be secured at a certain level or more as in the prior art. In other words, when the external dimensions of the protective panel with touch input function are fixed, it is difficult to expand the active area (input area) that guarantees the input function, and when the input area is fixed It has been difficult to reduce the outer shape of the protection panel with a touch input function.

  The present invention provides a protection panel with a touch input function for an electronic device display window that can be easily narrowed in view of the above-described problems of the prior art.

The present invention comprises a lower electrode panel having a rectangular lower transparent electrode and a lower circuit provided around the lower transparent electrode on the upper surface of a non-flexible protective panel body,
It has a rectangular upper transparent electrode and an upper circuit provided around the upper transparent electrode on the lower surface of the flexible transparent insulating film, and a gap between the lower electrode panel and the electrode is formed by a frame-shaped paste material. An upper electrode sheet formed and bonded at the periphery;
A decorative sheet that has a decorative layer that conceals the lower circuit and the upper circuit to form a transparent window portion on at least one surface of a flexible transparent insulating film, and is bonded to the upper surface of the upper electrode sheet; ,
A terminal for extracting an electrical signal from the upper circuit and the lower circuit,
A display that is configured to be fitted and held in a panel fitting portion of a casing having an opening without gap so that its outer surface forms the same plane, and is disposed on the lower side so as to be visible from the outside through the transparent window portion. A protection panel with a touch input function of an electronic device display window for protecting the device,
The inner edge of the frame-like paste material is configured to be partially or totally close to the active area that guarantees the input function, except for the corners.

  In the above-described configuration, the active area is a quadrangle, and the inner edge of the frame-shaped paste material is close to the corner except for the four corners.

  Each said structure WHEREIN: It comprised so that the inner edge corresponding to the said corner part of the said frame-shaped paste material might draw the arc.

  According to the present invention, the inner edge of the frame-shaped glue material is partially or entirely close to the active area that guarantees the input function, except for the corners for securing a light input load. It is easy to narrow the frame. In other words, when the external dimensions of the protective panel with touch input function are determined, it is easy to expand the active area (input area) that guarantees the input function, and when the area of the input area is determined It is easy to reduce the outer shape of the protection panel with a touch input function.

  Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.

  As shown in FIG. 15, the protective panel 1 with a touch input function for an electronic device display window according to the present invention is fitted and held in a panel fitting portion of a casing 19 having an opening without a gap so that the outer surface thereof forms the same plane. In addition to being configured, the display 20 disposed on the lower side of the transparent window can be protected from the outside through the transparent window.

  FIG. 1 is an exploded perspective view showing an embodiment of a configuration of a protection panel with a touch input function of an electronic device display window according to the present invention.

  In the figure, a protection panel 1 with a touch input function for an electronic device display window includes a rectangular lower transparent electrode 5 on a top surface of a non-flexible protection panel body 3a and a lower circuit provided around the lower transparent electrode 5. An upper electrode having a lower electrode panel 3 having 7a and 7b, a rectangular upper transparent electrode 4 on the lower surface of a flexible transparent insulating film, and upper circuits 6a and 6b provided around the upper transparent electrode 4; A sheet 2a and a decorative sheet 2b having a decorative layer that conceals the lower circuit and the upper circuit to form a transparent window 18 on at least one surface of a flexible transparent insulating film. . The upper electrode sheet 2a and the decorative sheet 2b are bonded together to form the movable sheet 2, as will be described later.

  The upper electrode sheet 2a and the lower electrode panel 3 form a gap (air layer) between the electrodes 4 and 5, and are bonded by a frame-like paste material 8 in FIG. It is bonded to the upper surface of the upper electrode sheet 2a with a transparent adhesive (not shown).

  As described in the section of [Problems to be Solved by the Invention], the input load by a finger, a pen or the like becomes heavy near the inner edge of the glue material 8, and the present inventors analyzed this in further detail. However, it has been found that the input load near the corner of the active area (input area) 15 that guarantees the input function is extremely heavy compared to the others. Therefore, in the present invention, as shown in FIG. 1, the frame-shaped glue material 8 has a shape in which the inner edge is close to the active area (input area) 15 that guarantees the input function except for the corners. . In the case of this figure, since the active area 15 is a quadrangle, the inner edge of the frame-shaped paste material 8 is close to the active area 15 except for the four corners. With this configuration, it is easy to narrow the frame. That is, when the outer dimensions of the protection panel 1 with a touch input function are determined, it is easy to widen the active area 15 that guarantees the input function (see FIG. 2), and the width of the active area 15 is determined. In this case, it is easy to reduce the outer shape of the protection panel with a touch input function (see FIG. 3). Reference numeral 108 in FIG. 3 denotes a conventional glue material 8.

  The inner edge of the frame-shaped glue material 8 may be partly close to the active area that guarantees the input function except for the corners, or as shown in FIGS. It may be close to. As a mode of approaching the former partly, for example, the inner edge of the frame-shaped paste material 8 can be configured to approach only a pair of opposing two sides of the square active area 15 except for the four corners. .

  The inner edge corresponding to the corner of the frame-shaped paste material 8 can be configured to draw an arc as shown in FIGS. In this case, since the inner edge corresponding to the corner of the frame-shaped paste material 8 does not have an intersection of two straight lines that form a corner, an advantage that an appearance defect hardly occurs with time even if repeated input is performed. There is. More specifically, when there is an intersection of two straight lines that form the corner, the movable sheet having a depression starting from this intersection is likely to be deformed at the time of input. In addition, there is a risk that deformation marks remain on the surface of the movable sheet. However, if the inner edge corresponding to the corner is configured to draw an arc, even if the movable sheet is deformed, it will not always be a dent starting from a specific location, so that the deformation marks on the movable sheet surface over time. Hard to remain.

  In the claims and the present specification, the inner edge shape of the frame-shaped glue material is defined as being partially or entirely close to the active area that guarantees the input function, except for the corners. However, this does not exclude from the technical scope until the inner edge corresponding to the corner is slightly closer to the active area as a result of the inner edge corresponding to the corner being drawn. The reason why the inner edge corresponding to the corner is drawn in an arc is to keep the input load in the vicinity of the corner low and to prevent the appearance defect over time due to repeated input.

  Moreover, various variations can be considered as the shape of the frame-shaped paste material 8 according to the present invention. An example is shown in FIGS.

  The results of measuring what changes are seen in the input load by devising the glue width of the frame-like glue material 8 as in the present invention are shown below. In FIG. 12, with respect to one side of the inner edge of the frame-shaped glue material 8, the glue width is changed so that the active area that guarantees the input function is closest to the active area that guarantees the input function, except for the corner of the inner edge. It is a sample for measurement (glue width A). FIG. 13 is a measurement sample (glue width B) in which one of the inner edges of the frame-shaped glue material 8 has a uniform glue width in accordance with the maximum width of the glue width A. When the input load at the measurement locations 1 to 12 was measured for the protection panel with a touch input function manufactured using each sample, results as shown in the graph of FIG. 14 were obtained. In other words, the glue load A has a reduced input load in the vicinity of the corner of the frame-like glue material 8 compared to the glue width B.

  In addition, the width | variety of the inner edge and outer edge corresponding to the said corner part of the said frame-shaped paste material 8 shall be 1 mm or more. When the width is narrowed beyond this, it becomes difficult to reliably obtain the airtightness of the air layer portion surrounded by the frame-shaped paste material 8. If the airtightness is not obtained, dust or the like is mixed in the air layer portion, the visibility of the transparent window 18 is lowered, or the air in the air layer escapes to the outside and the upper electrode sheet 2a is bent. As a result, Newton rings and insulation failure may occur.

  A spacer is usually provided between the upper electrode sheet 2a and the lower electrode panel 3 so that the electrodes 4 and 5 provided on the respective opposing surfaces do not erroneously contact each other. The spacer 9 can be obtained by forming a transparent photocurable resin into fine dots by a photo process. Also, the spacer 9 can be formed by forming a large number of fine dots by a printing method.

  As the material of the inflexible protective panel main body 3a of the lower electrode panel 3, a material that has excellent transparency and can protect the display 20 such as a liquid crystal panel or an organic EL panel from being damaged is used. For example, methacrylic resin (PMMA), acrylonitrile-styrene copolymer resin (AS), acrylonitrile-butadiene-styrene copolymer resin (ABS), cellulose propine auto resin, polycarbonate resin (PC), polystyrene resin (PS) ), Plastic plates such as polyester resin and polyethylene resin, and the like can be used. In particular, methacrylate (PMMA) is excellent in transparency. Further, a glass plate may be used. In the present invention, a polycarbonate resin is particularly preferable in terms of processability.

  Further, on the surface on which the lower transparent electrode 5 of these plates is formed, a film of engineering plastic such as polycarbonate, polyamide, or polyether ketone, acrylic, polyethylene terephthalate, or polybutylene terephthalate is used. The lower transparent electrode 5 may be bonded to the lower electrode panel 3 through the film.

  Examples of the material of the flexible transparent insulating film of the upper electrode sheet 2a include engineering plastics such as polycarbonate, polyamide, or polyether ketone, acrylic, polyethylene terephthalate, or polybutylene. A terephthalate film or the like can be used.

  The transparent electrodes 4 and 5 are mainly composed of metal oxide films such as tin oxide, indium oxide, antimony oxide, zinc oxide, cadmium oxide, or indium tin oxide (ITO), or these metal oxides. Not required after a composite film or a metal film such as gold, silver, copper, tin, nickel, aluminum, or palladium is formed on a transparent conductive film by vacuum deposition, sputtering, ion plating, or CVD. These portions are removed by etching to form a rectangular shape. For etching, after forming a resist on the part that you want to leave as an electrode by photolithography or screen printing, immerse it in an etching solution such as hydrochloric acid or spray the etching solution to remove the transparent conductive film in the part where the resist is not formed. By removing the resist and then immersing it in a solvent, the resist is removed or dissolved to be removed. Etching with a laser is also possible.

  In the upper electrode sheet 2a and the lower electrode panel 3, upper circuits 6a and 6b and lower circuits 7a having predetermined patterns such as bus bars and lead lines on the same surface as the upper transparent electrode 4 and the lower transparent electrode 5 are provided. 7b is formed, and is output to the outside by terminals for taking out electrical signals from the upper circuits 6a and 6b and the lower circuits 7a and 7b. As a method for taking out an electric signal, a back terminal, for example, an FPC 10 with a pin as shown in FIG. 1, is provided through through holes 9a, 9b, 9c, 9d provided in the lower electrode panel 3 by a drill or a press. Output to the outside. In addition, as long as the formation pattern of a lead wire is connected to a terminal, it may be formed in any way. Further, the back terminal is not limited to the FPC 10 with a pin, and may be only a pin inserted into the through holes 9a, 9b, 9c, 9d, for example. Furthermore, as a method for taking out an electric signal, in addition to taking out from the back surface of the lower electrode panel 3, a commercially available method can be used from the side between the upper electrode sheet 2a and the lower electrode panel 3 as is usually done with a touch panel. It can also be output to the outside by inserting an FPC.

  The material of the upper circuit and the lower circuit is made of a metal such as gold, silver, copper, or nickel, or a conductive paste such as carbon, and is composed of screen printing, offset printing, gravure printing, or flexographic printing. It can be formed by a printing method such as printing, a photoresist method, or a brush coating method.

  The decorative sheet 2b is a flexible transparent insulating film, such as polycarbonate, polyamide, or polyether ketone engineering plastic, acrylic, polyethylene terephthal, or polybutylene terephthal. A decorative layer is formed with a pattern 17 on one side of the film so as to conceal the periphery of the transparent window 18, that is, the upper circuits 6a and 6b and the lower circuits 7a and 7b.

The decorative layer is made of a resin such as polyvinyl resin, polyamide resin, polyester resin, polyacrylic resin, polyurethane resin, polyvinyl acetal resin, polyester urethane resin, or alkyd resin as a binder. Colored inks containing various color pigments or dyes as colorants may be used. As a method for forming the decorative layer, a normal printing method such as screen printing, offset printing, gravure printing, or flexographic printing may be used. In particular, the offset printing method and the gravure printing method are suitable for performing multicolor printing and gradation expression.

  The decorative layer may be composed of a metal thin film layer or a combination of a pattern printing layer and a metal thin film layer. The metal thin film layer expresses metallic luster as the decorative layer, and is formed by a vacuum deposition method, a sputtering method, an ion plating method, a plating method, or the like. In this case, a metal such as aluminum, nickel, gold, platinum, chromium iron, copper, tin, indium, silver, titanium, lead, or zinc, or an alloy or compound thereof is used depending on the metallic luster color to be expressed. use. The film thickness of the metal thin film layer is generally about 0.05 μm. Moreover, when providing a metal thin film layer, in order to improve adhesiveness with another layer, you may provide a front anchor layer and a rear anchor layer.

  A hard coat film may be bonded to the surface of the decorative sheet 2b.

  As the frame-like paste material 8, a double-sided adhesive tape punched into a frame shape, or an insulating transparent adhesive made of acrylic resin, epoxy resin, phenol resin, vinyl resin or the like is used. As a method for forming the frame-shaped paste material 8 when a transparent adhesive is used, a normal printing method such as screen printing, offset printing, gravure printing, or flexographic printing may be used.

  By configuring as described above, the protection panel 1 has a touch input function on the front surface of the protection panel body 3a, and the protection panel 1 has an opening of an electronic device such as a mobile phone as shown in FIG. By fitting in the panel fitting part of the casing 19, the input in the outer surface of an electronic device is possible.

<Example 1>
An ITO film having a thickness of 20 nm is formed on the entire surface of a transparent insulating film made of a polycarbonate (PC) film having a thickness of 100 μm by sputtering, and an unnecessary ITO film is removed by etching to remove a rectangular shape. A lower transparent electrode was formed. Next, a fine dod-like spacer was formed on the entire surface of the lower transparent electrode by screen printing using an epoxy acrylate thermosetting resin. Further, a lower bus bar disposed on two sides facing the vertical direction of the lower transparent electrode and a lead line for outputting to the outside from the lower bus bar were formed by screen printing silver paste as a lower circuit. Next, a number of fine dots were formed by screen printing to form spacers. Finally, the shield layer was screen-printed so as to protect the insulation of the lower circuit, and then cut into a sheet of 490 mm long × 510 mm wide.

  Also, a polycarbonate plate having the same dimensions as the PC film and a thickness of 1.0 mm is bonded to the surface of the PC film opposite to the surface on which the lower transparent electrode is formed with a transparent adhesive made of PSA having a thickness of 0.025 mm. After that, through-holes with a diameter of 1 mm for inserting the pin shaft of the FPC with pin, which is a back surface terminal, were arranged in a row at the edge portion, and were drilled in a row, thereby obtaining a lower electrode panel.

  Moreover, a flexible transparent insulating film made of a polyethylene terephthalate (PET) film having a thickness of 188 μm is used, and an ITO film having a thickness of 20 nm is formed on the entire surface by sputtering, and the length and width are the same as those of the lower electrode panel. After cutting into a sheet having a size, an unnecessary transparent ITO film was removed by etching to form a rectangular upper transparent electrode. In addition, an upper bus bar arranged on two sides facing the lateral direction of the upper transparent electrode and a lead line for outputting to the outside from the upper bus bar are formed by screen printing silver paste as an upper circuit, An electrode sheet was obtained.

Furthermore, using a flexible transparent insulating film made of a roll-shaped PET film having a thickness of 125 μm, an ultraviolet curable acrylic hard coat was applied to one side by gravure printing to obtain a PET film with a single-side hard coat. In addition, a flexible transparent insulating film made of a PET film with a thickness of 50 μm is used, and a transparent window portion of 65 mm length × 40 mm width is screen-printed with colored ink in which a pigment is dispersed in a polyester resin on one side. A decorative layer was formed to obtain a decorative film. Furthermore, after pasting the PET film with a single-sided hard coat and the decorative film over the entire surface using a transparent adhesive made of PSA, the length and width are cut into a sheet shape having the same dimensions as the upper electrode sheet, and a hard coat is attached. A decorative sheet was obtained.

  Next, the decorative layer side surface of the decorative sheet is bonded to the surface opposite to the upper transparent electrode side of the upper electrode sheet with a transparent adhesive made of PSA having a thickness of 0.025 mm, and the lower electrode panel The emulsion in which the upper electrode sheet is disposed to face each other so as to separate the electrodes formed therein, and a hole for forming a gap between the electrodes and a hole for connecting to the back surface terminal (FPC with pin) are formed. It was pasted from the paste printing. The frame-shaped gap forming hole closes the inner edge of the frame-shaped glue layer to a distance of 1 mm except for a corner to a rectangular active area of 64 mm × 39 mm which guarantees the input function. The inner edge corresponding to the corner of the frame-like glue layer describes an arc. The minimum width between the inner edge and the outer edge corresponding to the corner of the frame-shaped paste material is 1 mm.

  Then, after injecting the conductive adhesive ink into the through-hole formed in the lower electrode panel with a dispenser, the metal pin of the back terminal is placed along the entrance of the through-hole, and an ultrasonic insert device is used to insert the metal pin. Forming the wall surface of the through hole in which each shaft portion of the metal pin is drilled in the lower electrode panel by press-fitting the shaft portion of the metal pin into the through hole while applying ultrasonic vibration and pressure to the head The melted resin was inserted while melting to obtain a protective panel with a narrow frame.

  It is to be noted that, by appropriately combining any of the various embodiments, the effects possessed by them can be produced. Although the present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as included within the scope of the present invention as long as they do not depart from the scope of the present invention.

It is a disassembled perspective view which shows one Example of a structure of the protection panel with a touch input function of the electronic device display window which concerns on this invention. It is a figure which shows the relationship between the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on this invention, and the active area which guarantees an input function. It is a figure which shows the relationship between the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on this invention, and the active area which guarantees an input function. It is a partial top view which shows one Example of the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on this invention. It is a partial top view which shows one Example of the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on this invention. It is a partial top view which shows one Example of the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on this invention. It is a partial top view which shows one Example of the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on this invention. It is a partial top view which shows one Example of the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on this invention. It is a partial top view which shows one Example of the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on this invention. It is a partial top view which shows one Example of the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on this invention. It is a partial top view which shows one Example of the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on this invention. It is a top view which shows the sample for a measurement of the frame-shaped paste material used for the input load measurement of the protection panel with a touch input function of an electronic device display window. It is a top view which shows the sample for a measurement of the frame-shaped paste material used for the input load measurement of the protection panel with a touch input function of an electronic device display window. It is a graph which shows the result of having measured the input load of the protection panel with a touch input function of an electronic device display window. It is a perspective view which shows the usage example of the protection panel with a touch input function of an electronic device display window. It is a disassembled perspective view which shows an example of a structure of the protection panel with a touch input function of the electronic device display window which concerns on a prior art. It is a figure which shows the relationship between the frame-shaped paste material in the protection panel with a touch input function of the electronic device display window which concerns on a prior art, and the active area which guarantees an input function.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Protective panel with touch input function of electronic device display window 2 Movable sheet 2a Upper electrode sheet 2b Decorating sheet 3 Lower electrode panel 3a Protective panel 4 Upper transparent electrode 5 Lower transparent electrode 6a, 6b Upper circuit 7a, 7b Lower circuit 8 Glue Material 9a, 9b, 9c, 9d Through hole 10 FPC with pin
11, 12, 13, 14 Pin 15 Active area (input area)
17 Pattern 18 Transparent window 19 Product (casing)
DESCRIPTION OF SYMBOLS 20 Display 100 Protection panel with touch input function of electronic device display window 102 Movable sheet 102a Upper electrode sheet 102b Decorating sheet 103 Lower electrode panel 103a Protection panel 108 Adhesive material

Claims (3)

A lower electrode panel having a rectangular lower transparent electrode and a lower circuit provided around the lower transparent electrode on the upper surface of the inflexible protective panel body;
It has a rectangular upper transparent electrode and an upper circuit provided around the upper transparent electrode on the lower surface of the flexible transparent insulating film, and a gap between the lower electrode panel and the electrode is formed by a frame-shaped paste material. An upper electrode sheet formed and bonded at the periphery;
A decorative sheet that has a decorative layer that conceals the lower circuit and the upper circuit to form a transparent window portion on at least one surface of a flexible transparent insulating film, and is bonded to the upper surface of the upper electrode sheet; ,
A terminal for extracting an electrical signal from the upper circuit and the lower circuit,
A display that is configured to be fitted and held in a panel fitting portion of a casing having an opening without gap so that its outer surface forms the same plane, and is disposed on the lower side so as to be visible from the outside through the transparent window portion. A protection panel with a touch input function of an electronic device display window for protecting the device,
A protective panel with a touch input function for an electronic device display window, characterized in that an inner edge of the frame-shaped glue material is partially or entirely close to an active area that guarantees an input function, except for a corner. . 2. The protection panel with a touch input function for an electronic device display window according to claim 1, wherein the active area is a quadrangle, and an inner edge of the frame-shaped paste material is made close except for the four corners. The protection panel with a touch input function of the electronic device display window according to claim 1, wherein an inner edge corresponding to the corner portion of the frame-shaped paste material draws an arc.

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