TW201512939A - Touch panel sensor sheet module and method for manufacturing touch panel system module - Google Patents

Abstract

The present invention achieves relatively high flexibility and easy management of overall thickness without an increase in the number of processes, ensures high reliability of connection between a transparent sheet having a conductive film formed thereon and a flexible printed circuit (FPC) board, and suppresses the occurrence of problems such as peeling of the FPC board at the time of assembling after the board is joined. Flexible printed circuit (FPC) boards (7, 7A) are respectively covered with a transparent adhesive sheet (reinforcement member) (8) in the width directions thereof in order to reinforce the joint parts of the FPC boards (7, 7A). Consequently, high reliability of connection between transparent sheets (3, 4), on which conductive films (3a, 4a) are respectively formed and the FPC boards (7, 7A) can be ensured, and the problem of the FPC boards (7, 7A) peeling off after being joined to the transparent sheets (3, 4) can be prevented or suppressed. In addition, by using a transparent adhesive sheet (reinforcement member) (8) in which an optical clear adhesive (OCA) sheet is superimposed on a transparent sheet (PET) that is also used in one member of a touch panel sensor sheet module (1), the risks associated with procuring new materials can be reduced.

Description

Touch panel sensor sheet module and touch panel system module manufacturing method

The invention relates to a touch panel sensor sheet module and a manufacturing method of a touch panel system module using the same, the touch panel sensor sheet module is used for an electrostatic capacitance touch panel. The capacitive touch panel is mounted on a display screen of a display device such as a liquid crystal display device, and the pointing position is detected by an instruction operation of the pointer in accordance with the display content, and can be used for a personal computer (PC, Personal Computer). ), tablet terminals, digital signage, and electronic blackboards can be used for multiple touches.

The manufacturing method of the previous touch panel system module is a transparent sheet in which a conductive film is laminated and laminated via an adhesive sheet called OCA (Optical Clear Adhesive), and the cover glass is also OCA. Fit and modularize. Regarding the material of the transparent sheet, PET (Polyethylene terephthalate) material is the mainstream, and the conductive film thereon has Cu, Ag, Au, which has a low conductor resistance for the purpose of improving the reaction speed and the like. Al is used as a conductor. The touch panel system module determines the indication position of the touch coordinate according to the change of the electrostatic capacitance of the transparent sheet.

An FPC (Flexible Print Circuit Board) is bonded to the external connection electrode wiring formed on the outer peripheral portion of the transparent sheet on which the conductive film is formed, and the opposite side of the FPC is connected to the control substrate or the like. The connection between the transparent sheet and the FPC is performed by interposing an anisotropic conductive film such as an ACF (anisotropic conductive film) between the two and heating and pressurizing them.

Touch panel sensor sheets used in previous touch panel system modules Since the transparent sheet is made of PET as the mainstream, if the film is heated to 180 degrees Celsius to 200 degrees Celsius in the same manner as the liquid crystal module, the transparent sheet may be deformed or melted. Therefore, an anisotropic conductive film for low temperature connection of 150 degrees Celsius or less is used. Thereafter, the electrode terminal (input terminal) on the opposite side of the transparent sheet from the bonded FPC is inserted into the slot to be connected to the control substrate, thereby constituting the previous touch panel system module.

Fig. 14 is a perspective view showing an example of an FPC joint portion of a conventional touch panel sensor sheet module.

In FIG. 14, the previous touch panel sensor sheet module 90 has a cover glass 91, a transparent sheet 92 formed on the cover glass 91, and a plurality of conductive films formed on the upper surface; a sheet 93 formed on the transparent sheet 92 and having a plurality of conductive films formed on the upper surface thereof; a protective film 94 disposed on the plurality of conductive films 93a of the transparent sheet 93; an anisotropic conductive film 95, The exposed portion of the upper surface of the transparent sheet 92 is exposed, and the upper surface of the exposed end portion is disposed on a plurality of electrode lead portions of any one of the plurality of sensing lines and the plurality of driving lines; and the FPC 96 A plurality of conductive films are disposed via the anisotropic conductive film 95 so as to correspond to a plurality of electrode lead portions.

On the bonding side of the transparent sheet of the FPC 96, a plurality of electrode lead portions of the transparent sheet 92 and a plurality of conductive films of the FPC 96 are heated by a state in which the anisotropic conductive film 95 is interposed therebetween. Pressure and electrical engagement. The opposite side of the FPC 96 is connected to a control board on which a controller IC (indicating controller) is mounted.

The plurality of electrode lead portions of the transparent sheet 92 of the previous touch panel sensor sheet module 90 and the plurality of conductive films of the FPC 96 are heated-pressure bonded only via the anisotropic conductive film 95, and the transparent sheet The plurality of electrode lead portions of the material 92 and the plurality of conductive films of the FPC 96 are held in engagement only by the adhesion strength to the anisotropic conductive film 95.

In this case, an ACF of the anisotropic conductive film 95, although developed by a material manufacturer, can ensure strength to some extent even under low temperature bonding, according to the anisotropy of the transparent sheet 92 and the FPC 96. The surface state (contamination, etc.) of the attachment portion of the conductive film 95, There is a reduction in strength.

When assembling a module in which the transparent sheet 92 and the FPC 96 are joined by other assembly manufacturers or factories other than the FPC bonding manufacturer as the touch panel sensor sheet module 90, when the FPC 96 is to be used When the electrode terminal (input terminal) is incorporated into the slot of the control board or the like, a large load may be applied to the joint portion thereof, causing the joint portion to be peeled off from the FPC 96 bonded to the transparent sheet 92, which may also result in The multi-touch function has a bad condition.

In the following Patent Document 1, an example in which a joint portion is reinforced by a protective layer containing a polyoxymethylene resin is proposed in order to prevent this.

15 is a plan view of a prior touch panel sensor sheet module disclosed in Patent Document 1. Figure 16 is a cross-sectional view taken along line A-A of Figure 15.

In the previous touch panel sensor sheet module 100 of FIG. 15, the first transparent surface including ITO (Indium Tin Oxide) is formed on the entire upper surface side of the first transparent substrate 101. Conductive film 102. A dot spacer 103 having a small size formed of an insulating epoxy resin is provided on the first transparent conductive film 102 at a specific pitch.

On the other hand, on the lower surface of the second transparent substrate 104 including the biaxially-oriented polyethylene terephthalate film having a thickness of 188 μm, the second transparent conductive film 105 containing ITO was formed over the entire surface.

The first transparent substrate 101 and the second transparent substrate 104 are attached to the outer side of the visible region boundary 106, and are inside the visible region boundary 106 of the touch panel, and the first transparent conductive film 102 and the second transparent conductive film 105 are The way to maintain the insulation state at intervals of about 20 to 500 μm is opposite.

In order to protect the second transparent substrate 104 so as not to cause scratches or the like which are likely to occur when the pointer is operated, a hard coat having an acrylic hardness of 3 H including an acrylic resin is provided on the upper surface side of the second transparent substrate 104. Layer 107.

In the subsequent portion of the first transparent substrate 101 and the second transparent substrate 104, silver powder is dispersed in a specific pattern on the outer side of the visible region boundary 106 on the first transparent substrate 101 side. Wiring formed by a printed dry film of a conductive paint formed in a resin, and electrode 108 (hereinafter referred to as a wiring-electrode pattern) for supplying a voltage to the transparent conductive film, an insulating primer 109 or a surface coating resist The etchant 110 and the adhesive layer 111 which is fixed to the first transparent substrate 101 and the second transparent substrate 104 are similarly formed on the second transparent substrate 104 side, and the wiring and the electrode pattern 112 are formed on the outer side of the visible region boundary 106. The insulating undercoat resist 113 or the surface resist 114 or the like.

The flexible wiring board 115 (hereinafter referred to as FPC) transmits the derived signals from the first and second transparent conductive films 102 and 105 to an external circuit. In the FPC 115, the material of the base film 116 is polyimine, and the wiring pattern 117 in which a plurality of specific patterns are arranged on one side is composed of a gold-plated copper foil, and the FPC 115 has a cover film 117 which does not need to be exposed. A portion of the cover layer 118 of the polyimide.

The FPC 115 is thermally bonded to the outer peripheral end portion of the upper surface of the first transparent substrate 101 via an anisotropic conductive film 119 mainly composed of an epoxy resin and gold-plated resin beads, and is then fixed, and the tail portion is connected to an external circuit. (not shown).

At this time, in the fixed state of the FPC 115, the end portions of the respective wiring patterns 117 are electrically connected to the wiring and the electrode pattern 108 via the anisotropic conductive film 119.

The protective resin layers 120 and 121 coated on the periphery of the crimping portion of the first transparent substrate 101 of the FPC 115 and containing the moisture-curable polyoxyl resin are used to enhance the adhesion of the FPC 115 and prevent the first transparent substrate. The wiring of the electrode-electrode pattern 108 or the wiring pattern 107 of the FPC 115, the purpose of the displacement, etc., are formed by coating with a dispenser or the like, and are disposed above the upper surface side of the first transparent substrate 101. The protective resin layer 120 on the side is configured to be cured without being in contact with the second transparent substrate 104.

Prior technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2005-115728 (Patent No. 4356416)

In the above-described touch panel sensor module 90, the anisotropic conductive film such as ACF is connected to the wiring terminal group of each transparent sheet 92 and the wiring terminal group on one end side of the FPC 96. After the bonding is performed by thermocompression bonding by heating and pressurization, the electrode terminal (input terminal) on the opposite side of the bonded FPC 96 from the transparent sheet 92 is inserted into the control substrate side of the controller IC. When the socket is connected and the FPC 96 is bent and twisted or stretched, the electrode terminal (input terminal) of the FPC 96 is peeled off.

In summary, when the touch panel system module is assembled using the above-described previous touch panel sensor sheet module 90, sometimes when the electrode wiring (input side) is incorporated into the slot of the control substrate, etc., sometimes When a large load (tensile force and twisting force) is applied to the FPC 96, the electrode wiring of the FPC 96 bonded to the electrode wiring of the transparent sheet 92 is peeled off from the electrode wiring of the transparent sheet 92, which may cause a plurality of points. The touch function has a bad condition.

In order to prevent this, in the above-described previous touch panel sensor sheet module 100 disclosed in Patent Document 1, it is proposed to use the surface of the joint portion of the protective resin layer 120, 121 containing the polyoxyl resin. And the case where the back side is reinforced, but the flexibility of the FPC 115 is impaired, and the overall thickness management is difficult (for example, the height of the protective resin layer 120 cannot exceed the height of the hard coat layer 107), and if the protective resin layer 120, 121 is utilized. When the surface and the back surface of the joint portion are reinforced, the hardening takes time, resulting in an increase in man-hours.

The present invention is directed to solving the above problems, and an object thereof is to provide a method for manufacturing a touch panel sensor sheet module and a touch panel system module using the same: flexibility is relatively good, and overall thickness is not required The management and the increase in the number of new working hours are also small, and the high connection reliability of the transparent sheet having the conductive film and the FPC can be ensured, thereby preventing or suppressing the occurrence of defects such as peeling during assembly after FPC bonding.

The touch panel sensor sheet module of the present invention comprises: a plurality of electrical conductors disposed on the flat panel to form a position information signal; and a first electrode coupled to the electrical conductor and disposed on the plane And a flexible wiring board provided with a second electrode connected to the first electrode and a wiring connected to the second electrode; and including at least a boundary portion between the flexible wiring substrate and the planar plate The reinforcing material is attached; thereby, the above object can be achieved.

The touch panel sensor sheet module of the present invention has: a first transparent sheet having a plurality of electric conductors formed on a surface of the touch panel sensor module of the present invention. And a second transparent sheet having a plurality of conductors arranged on the other of the planar plates different from the planar plate; the second transparent sheet intersecting the first transparent sheet with the electrical conductor The surface of the conductor is laminated on the first transparent sheet; and the first electrode is disposed on each of the first transparent sheet and the second transparent sheet, and the anisotropic conductive film is used The second electrode is connected.

The reinforcing material is attached to the end of the flexible wiring board including the connection portion between the first electrode and the second electrode by the reinforcing material in the touch panel sensor sheet module of the present invention.

The reinforcing material in the touch panel sensor sheet module of the present invention is attached to the boundary portion and is provided in two locations corresponding to the width direction of the flexible wiring board.

The reinforcing material in the touch panel sensor sheet module of the present invention is interposed and attached between the flexible wiring substrate and the flat plate.

The touch panel sensor sheet module of the present invention comprises: a plurality of electrical conductors disposed on the flat panel to produce a position information signal; a first electrode coupled to the electrical conductor and disposed on the planar panel And a flexible wiring board provided with a second electrode connected to the first electrode by an anisotropic conductive film and a wiring connected to the second electrode; and the flexible wiring substrate has a first outer shape a width portion and a second outer width portion connected to the first outer width portion, wherein the first outer width portion includes a connection portion between the first electrode and the second electrode And a region that is joined to the planar plate by the anisotropic conductive film outside the region of the connecting portion, and the outer shape width is a width that is bilaterally symmetrical with respect to the second outer width portion; The above purpose can be achieved.

The touch panel sensor sheet module of the present invention has: a first transparent sheet having a plurality of electric conductors formed on a surface of the touch panel sensor module of the present invention. And a second transparent sheet having a plurality of conductors arranged on another planar plate different from the planar plate, and the second transparent sheet is formed by intersecting the first transparent sheet with the electrical conductor The surface of the conductor is laminated on the first transparent sheet; and the first electrode is disposed on each of the first transparent sheet and the second transparent sheet.

In the touch panel sensor sheet module of the present invention, at least one of the conductors connected to the first electrode is joined to a region of the flat plate by the first outer width portion.

In the touch panel sensor sheet module of the present invention, a reinforcing material is attached so as to include at least a boundary portion between the flexible wiring board and the flat plate.

Further, the connections indicate connections, the connections indicate electrical connections, and the connections indicate subsequent and not electrical connections.

The touch panel sensor sheet module of the present invention has: a first transparent sheet having a plurality of conductive films arranged on a surface thereof; and a second transparent sheet laminated on the first transparent sheet And a plurality of conductive films are arranged on the surface thereof so as to intersect the plurality of conductive films arranged thereon; and the first transparent sheet and the second layer are respectively respectively formed via the respective anisotropic conductive films The plurality of electrode wires in which the plurality of conductive films are arranged in the transparent sheet are bonded to the electrode wires of the flexible wiring boards, and the first transparent sheet and the second transparent sheet are arranged for the arrangement. A plurality of electrode wires having a plurality of conductive films and reinforcing electrode wiring portions of the electrode wires of the flexible wiring boards are respectively reinforced from at least two sides of each of the flexible wiring boards The first transparent sheet and the second transparent sheet are respectively attached with transparent adhesive sheets of specific width dimensions. The material can be achieved by this.

Moreover, it is preferable that the transparent adhesive sheet in the touch panel sensor sheet module of the present invention is attached to the entire width direction or both sides of the flexible wiring board.

Furthermore, it is preferable that the transparent adhesive sheet in the touch panel sensor sheet module of the present invention is deposited and attached between one of the flexible wiring boards and the first transparent sheet. And the other of the flexible wiring boards and the second transparent sheet.

Furthermore, it is preferable that each of the flexible wiring boards in the touch panel sensor sheet module of the present invention protrudes to the sheet side of the first transparent sheet and the second transparent sheet. One side is 2mm~20mm.

Further, it is preferable that the thickness of the transparent adhesive sheet in the touch panel sensor sheet module of the present invention is 0.1 mm to 3 mm.

Further, it is preferable that the flexible wiring board including the region joined and then connected via the anisotropic conductive film in the touch panel sensor sheet module of the present invention has an outer width wider than the outer width of the flexible wiring board In terms of the width of the left and right symmetry.

The touch panel sensor sheet module of the present invention has: a first transparent sheet having a plurality of conductive films arranged on a surface thereof; and a second transparent sheet laminated on the first transparent sheet And a plurality of conductive films are arranged on the surface thereof so as to intersect the plurality of conductive films arranged thereon; and the first transparent sheet and the second layer are respectively respectively formed via the respective anisotropic conductive films a plurality of electrode wires in which a plurality of conductive films are arranged in a transparent sheet, and electrode wirings of the respective flexible wiring boards are bonded to each other, and the flexible wiring is bonded to and bonded to the region via the anisotropic conductive film The outer width of the plate is a width that is bilaterally symmetrical with respect to the width of the outer shape connected thereto; thereby, the above object can be achieved.

Further, it is preferable that a wide flexible wiring board portion which is bilaterally symmetrical in the touch panel sensor sheet module of the present invention is provided as an effective wiring through the anisotropic conductive film. Each electrode wiring.

Furthermore, it is preferable to change the touch panel sensor module of the present invention. The first transparent sheet and the second transparent sheet are arranged such that the arrangement of the electrode wirings of at least one of the conductive films on each of the plurality of conductive films is arranged in the width of the flexible wiring board. In this direction, the arrangement direction of the electrode wirings of at least one of the conductive films on each of the plurality of conductive films is changed, and the electrode wirings are disposed in the respective flexible wiring boards. The width direction of the flexible wiring board is joined to each other.

Furthermore, it is preferable that the flexible wiring board in the touch panel sensor sheet module of the present invention has a shape other than the front side boundary line including the width direction of the anisotropic conductive film along the protrusion width direction thereof. In the area, it becomes a form of a wide portion that bulges, and protrudes toward both sides.

Further, it is preferable that the wide-width symmetrical width of the touch panel sensor sheet module of the present invention is 1 mm to 30 mm wide on one side.

Further, it is preferable that the flexible wiring board in the touch panel sensor sheet module of the present invention has an outer width of a width of 0.1 mm to 15 mm with respect to the outer width of the connecting panel, and has a R (Radius) And connected by curves.

Furthermore, in the touch panel sensor sheet module of the present invention, in the first transparent sheet and the second transparent sheet, a plurality of conductive films are arranged in the plurality of conductive films. The electrode wiring and the bonding electrode wiring portion of the electrode wiring of each of the flexible wiring boards are reinforced, and the first transparent sheet and the second surface are respectively formed from at least two sides of the flexible wiring board in the width direction. The transparent sheets are respectively attached with transparent adhesive sheets of respective specific width dimensions.

The manufacturing method of the touch panel system module of the present invention comprises the steps of: manufacturing the above touch panel sensor sheet module of the present invention; and flexible wiring of the touch panel sensor sheet module The electrode terminal group on the control substrate side on the opposite side of the board is inserted into the slot, and the electrode terminal group is connected to the electrode terminal group of the control board. This achieves the above object.

With the above configuration, the action of the present invention will be described below.

In the present invention, the touch panel sensor sheet module has: a first transparent sheet having a plurality of conductive films arranged on its surface; and a second transparent sheet laminated on the first transparent sheet And a plurality of conductive films are arranged on the surface thereof so as to intersect the plurality of conductive films; and the first transparent sheet and the second transparent sheet are respectively formed via the respective anisotropic conductive films. Each of the plurality of electrode wires in which the plurality of conductive films are arranged is bonded to the electrode wires of the flexible wiring boards, and the plurality of conductive sheets are arranged in the first transparent sheet and the second transparent sheet. The plurality of electrode wirings of the film and the bonding electrode wiring portions of the electrode wirings of the flexible wiring boards are reinforced by the first transparent sheet and the second side from the width direction of each of the flexible wiring boards. The transparent sheets are respectively attached with transparent adhesive sheets of respective specific width dimensions.

Thereby, the flexibility is relatively good, and the overall thickness management is not required, and the increase in the number of new working hours is also small, and the high connection reliability of the transparent sheet formed with the conductive film and the FPC can be ensured, thereby preventing or suppressing the FPC bonding. The occurrence of defects such as peeling during assembly.

According to the present invention, the flexibility is relatively good, the overall thickness management is relatively easy, the man-hour is not increased, and the high reliability of the transparent sheet formed with the conductive film and the FPC can be ensured, thereby preventing It is also possible to suppress the occurrence of defects such as peeling during assembly after FPC bonding.

1, 1B~1H‧‧‧Touch panel sensor sheet module

2‧‧‧ Covering glass

3, 4‧‧‧Transparent sheet

3a, 4a‧‧‧Transparent sheet of conductive film (electrode wiring)

3a1‧‧‧Electrical film

5‧‧‧Protective film

6, 6D ~ 6F‧‧‧ anisotropic conductive film

7, 7A, 7A, 7D~7F‧‧‧FPC (Flexible Printed Wiring Substrate)

7a, 7Aa, 7A'a, 7Da~7Fa‧‧‧FPC transparent sheet joint side (output side)

7A'd, 7Dd, 7Ed‧‧‧ wide section

7b, 7Ab, 7A'b, 7Db~7Fb‧‧‧FPC control board connection side (input side)

7c‧‧‧FPC conductive film

7c1‧‧‧ conductive film

7Fd‧‧‧Protruding wide section

8, 8B, 8C, 8G, 8H‧‧‧transparent adhesive sheets (reinforcing materials)

9‧‧‧Sensor part (conductive film part)

91‧‧‧ Covering glass

92‧‧‧Transparent sheet

93‧‧‧Transparent sheet

93a‧‧‧Electrical film

94‧‧‧Protective film

95‧‧‧ Anisotropic conductive film

96‧‧‧FPC

100‧‧‧Touch panel sensor sheet module

101‧‧‧1st transparent substrate

102‧‧‧1st transparent conductive film

103‧‧‧ point spacer

104‧‧‧2nd transparent substrate

105‧‧‧2nd transparent conductive film

106‧‧‧visible area boundaries

107‧‧‧hard coating

108‧‧‧Wiring-electrode pattern

109‧‧‧ Primer resist

110‧‧‧Surface resist

111‧‧‧Adhesive layer

112‧‧‧Wiring and electrode pattern

113‧‧‧ primer coating

114‧‧‧Surface resist

115‧‧‧Flexible wiring board

116‧‧‧Substrate film

117‧‧‧Wiring pattern

118‧‧‧ Coverage

119‧‧‧ Anisotropic conductive film

120, 121‧‧‧Protective resin layer

A-a'‧‧‧FPC outline width of input and output traction wiring

B-b'‧‧‧FPC outline width on the output electrode wiring side

W‧‧‧Width

Fig. 1 is a plan view showing a touch panel sensor sheet module in the first embodiment of the present invention.

Fig. 2 is a perspective view showing a fixing example of an FPC joint portion of the touch panel sensor sheet module of Fig. 1.

Figure 3 is a cross-sectional view taken along line B-B of Figure 2.

Figure 4 is a cross-sectional view taken along line C-C of Figure 2.

Fig. 5 is a perspective view showing another fixing example of the FPC joint portion in the touch panel sensor sheet module according to the second embodiment of the present invention.

Fig. 6 is a perspective view showing still another fixing example of the FPC joint portion in the touch panel sensor sheet module according to the third embodiment of the present invention.

Figure 7 is a cross-sectional view taken along line D-D of Figure 6.

Fig. 8 is a plan view showing an example of a touch panel sensor sheet module in the fourth embodiment of the present invention.

Fig. 9 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module of Fig. 8.

Fig. 10 is a perspective view showing a fixing example of an FPC joint portion in the touch panel sensor sheet module according to the fifth embodiment of the present invention.

Fig. 11 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module according to the sixth embodiment of the present invention.

Fig. 12 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module according to the seventh embodiment of the present invention.

Fig. 13 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module according to the eighth embodiment of the present invention.

Fig. 14 is a perspective view showing an example of an FPC joint portion of a conventional touch panel sensor sheet module.

15 is a plan view of a prior touch panel sensor sheet module disclosed in Patent Document 1.

Figure 16 is a cross-sectional view taken along line A-A of Figure 15.

Hereinafter, embodiments 1 to 8 of the touch panel sensor sheet module of the present invention and a method of manufacturing the touch panel system module incorporating the same will be described in detail with reference to the drawings. Furthermore, in terms of the production of the drawings, each of the constituent members in each of the figures The thickness, length, and the like of the person are not limited to the illustrated configuration. Further, Embodiments 1 to 8 of the touch panel sensor sheet module of the present invention and the method of manufacturing the touch panel system module incorporating the same can be performed within the scope of the claims of the present application. Various changes. In other words, an embodiment obtained by combining the technical means appropriately changed within the scope of the claims of the present application is also included in the technical scope of the present invention.

(Embodiment 1)

Fig. 1 is a plan view showing a touch panel sensor sheet module in the first embodiment of the present invention.

In FIG. 1, the touch panel sensor sheet module 1 of the first embodiment is configured by attaching a sensor sheet to a cover glass which is a transparent substrate (not shown). The transparent sheet 3 as the first transparent sheet on which the plurality of conductive films are formed is bonded and laminated to the transparent sheet 4 as the second transparent sheet by the adhesive sheet, and is used as the sensor sheet. material. For the purpose of increasing the reaction rate and the like, each of the plurality of conductive films 3a and 4a of each of the transparent sheets 3 and 4 uses a metal such as Cu, Ag, Au, Al or the like having a low conductor resistance as a conductor. The touch panel sensor sheet module 1 determines the position of the pointing coordinate (touching coordinates) based on the change in the electrostatic capacitance of the transparent sheets 3, 4. In summary, the sensor surface 9 (sensor sheet surface) of a plurality of conductive films 4a (for example, driving lines) including a plurality of longitudinal conductive films 3a (for example, sensing lines) and a direction orthogonal thereto is used. The pointing operation is performed by a pointer such as a touch pen or a finger, and the touch position is calculated and detected by a controller IC (not shown).

The touch panel sensor sheet module 1 of the first embodiment includes a control board on which a controller IC is mounted, and constitutes a touch panel system module according to the first embodiment.

Each of the outer peripheral portions of the transparent sheet 3 on which the plurality of conductive films 3a are formed and the transparent sheet 4 on which the plurality of conductive films 4a are formed are respectively formed with external electrode wiring groups for external connection, and the electrode wiring groups are bonded to the respective electrode wiring groups. FPC 7, 7A as a flexible wiring board. The bonded FPCs 7 and 7A are electrically connected to a control board on which a controller IC (not shown) is mounted. The connection between each transparent sheet 3, 4 and each of the FPCs 7 and 7A is via ACF (anisotropic) The anisotropic conductive film 6 described later is electrically bonded by heat-pressure bonding (pressure: about 10 N/cm) by heating and pressurization.

For the operation of the manufacturing step or the transfer of the electrode terminal group (input terminal) of the transparent sheet joining side 7a of the FPCs 7 and 7A of the flexible wiring board and the lead electrode group of the transparent sheets 3 and 4 When it is not peeled off during operation, the strips are attached to the FPC 7 and 7A in the width direction, and a strip-shaped and transparent adhesive sheet 8 is attached from the top in a strip shape, and the two ends are respectively attached to the transparent sheet. On sheets 3, 4. The attachment region of the transparent adhesive sheet 8 includes an arrangement region of the anisotropic conductive film 6.

The manufacturing method of the touch panel system module of the first embodiment has the following steps: a manufacturing step of touching the panel sensor sheet module 1, which includes attaching the present embodiment across the width directions of the FPCs 7 and 7A. The transparent adhesive sheet 8 of the form 1 is fixed to the transparent sheets 3, 4, respectively; and the electrode terminal group of the opposite side of the FPC 7, 7A of the touch panel sensor sheet module 1 is inserted into the slot And the step of connecting the electrode terminal group to the electrode terminal group of the control substrate.

The touch panel sensor sheet module 1 of the first embodiment described above will be described in more detail with reference to Figs. 2 to 4 .

Fig. 2 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module 1 of Fig. 1. Figure 3 is a cross-sectional view taken along line B-B of Figure 2. Figure 4 is a cross-sectional view taken along line C-C of Figure 2.

As shown in FIG. 2 to FIG. 4, focusing on the FPC 7, the touch panel sensor sheet module 1 of the first embodiment has a cover glass 2, and a transparent sheet 3 formed thereon. Covering the glass 2, and forming a plurality of conductive films 3a (for example, sensing lines) parallel to each other on the upper surface; a transparent sheet 4 formed on the transparent sheet 3, and having a plurality of parallel lines formed on the upper surface a conductive film 4a (for example, a driving line); a protective film 5 disposed on the plurality of conductive films 4a of the transparent sheet 4 for surface protection; and an anisotropic conductive film 6 which makes the upper surface of the transparent sheet 3 Only a specific area of the end is exposed and above the exposed end The surface is disposed on a plurality of electrode lead portions (connection electrode groups) of the plurality of conductive films 3a (a plurality of sensing lines); and the FPC 7 (flexible wiring substrate) is configured to correspond to the plurality of electrode lead portions The anisotropic conductive film 6 is disposed with a plurality of conductive films 7c as a connection electrode group; and a strip-shaped and strip-shaped transparent adhesive sheet 8 which protrudes only a certain distance from the width direction of the FPC 7 at both ends The way to cover the top of the FPC 7 with a certain width. The FPC joint portion is reinforced by the transparent adhesive sheet 8.

On the transparent sheet joining side 7a of the FPC 7, a plurality of electrode lead portions (connecting electrode groups) respectively connected to the plurality of conductive films 3a of the transparent sheet 3 and a plurality of conductive films 7c (connecting electrode groups) of the FPC 7 The alignment is performed, and the mutually connected electrode group is electrically joined by thermal stress in a state in which the anisotropic conductive film 6 is interposed therebetween. The control board side 7b of the FPC 7 is connected to the connection electrode group on which the control board of the controller IC is mounted.

In the external connection electrode wiring (connection electrode group) on the outer peripheral portion of the transparent sheet 3 on which the plurality of conductive films 3a are formed, the connection electrode wiring of the FPC 7 is bonded via the anisotropic conductive film 6 (connection Electrode group; output terminal).

In the anisotropic conductive film 6, ACF (film type), ACP (Anisotropic Conductive Paste) (paste type), or the like can be used, and conductive particles are selected according to the distance between the connection electrode wirings (connected electrode groups). The appropriate component such as the size of (gold particles). Basically, the anisotropic conductive film 6 has a width which is substantially the same as the outer width of the FPCs 7 and 7A (so-called width direction, which is the lateral direction in the drawing) on the outer peripheral portions of the transparent sheets 3 and 4 or The FPCs 7 and 7A have a width that is slightly larger than the width of the outer shape, and the anisotropic conductive film 6 is a region that covers the connection electrode terminal portion (connecting electrode group) from the one end portion to the other end portion. Only the conductive particles (gold particles) of the ACF existing between the upper and lower connection electrode terminals are crushed by thermocompression bonding, so that the upper and lower connection electrode terminals are turned on, and the upper and lower connection electrode terminals are not connected. The conductive particles (gold particles) of the ACF are surrounded by the insulating material, so they remain non-conductive. status. In this way, the connection electrode wiring (output terminal) of the FPC 7 is bonded to the external connection electrode wiring on the outer peripheral portion of the transparent sheet 3 via the anisotropic conductive film 6.

The transparent adhesive sheet 8 (reinforcing material) is attached in a form covering the upper surface of the joint corresponding to the FPC 7. The transparent sheets 3 and 4 mainly use a PET material, and the conductive films 3a and 4a are formed via the subsequent layers. In the first embodiment, the bonding portion of the FPCs 7 and 7A is used as a peeling reinforcement measure, and is also used as a transparent adhesive for the adhesive layer of the transparent sheets 3 and 4 of the touch panel sensor sheet module 1. The sheets 8 (reinforcing materials) are respectively attached to the FPCs 7 and 7A corresponding to the region of the electrode terminal portion for connection, and are respectively fixed to the FPCs 7 and 7A.

In the touch panel sensor sheet module 1, since the transparent sheets 3 and 4 are made of PET, the transparent sheet 3 is heated to about 180 degrees Celsius to about 200 degrees Celsius in the same manner as the liquid crystal module. 4 will deform or melt. Therefore, in the touch panel sensor sheet module 1, an anisotropic conductive film 6 for low temperature connection of 150 degrees Celsius or less is used.

In this manner, the anisotropic conductive film 6 for low-temperature connection of about 150 degrees Celsius or less is used, and the electrode terminal group (input terminal) of the transparent sheet joining side 7a of the FPCs 7 and 7A and the transparent sheets 3 and 4 are as described above. The lead electrode group is joined, and the electrode terminal group (input terminal) of the control board side 7b on the opposite side of the FPCs 7 and 7A is inserted into the slot, and is connected to the electrode terminal group (input terminal) of the control board. The FPC 7, 7A is bent toward the opposite side of the cover glass 2 side (the upper side in Fig. 2) to assemble the touch panel system module. By touching the cover glass 2 side, the control substrate is used to calculate and detect the touch position.

In order to ensure high connection reliability of the transparent sheet 3 and the FPC 7 in which the plurality of conductive films 3a are formed, it is preferable that the anisotropic conductive film 6 is a member having low temperature bonding and high adhesion, and this cannot be achieved. In the case of the case, the high adhesion reliability of the transparent sheet 3 on which the conductive film 3a is formed and the FPC 7 can be ensured by attaching the transparent adhesive sheet 8 (reinforcing material), thereby preventing or suppressing the FPC 7 from being joined. The transparent adhesive sheet 8 is also used to touch the transparent sheet (PET) of the panel sensor sheet module 1 and the like. For OCA (Optical Clear Adhesive) double-sided adhesive sheets are overlapped.

The transparent adhesive sheet 8 (reinforcing material) is composed of a sheet obtained by laminating a double-sided adhesive OCA on a film-like PET material. Regarding the size of the transparent adhesive sheet 8 (reinforcing material) extending from the FPC 7, it is preferable that the one side and the transparent sheet 3 extend only 2 to 20 mm from the electrode terminal group of the FPC 7 (outside the FPC 7). size. If the protrusion amount of one side of the transparent adhesive sheet 8 is less than 2 mm, the peeling prevention effect cannot be exhibited when the peeling stress of the FPC 7 is applied, and the FPC 7 is easily peeled off. On the contrary, if the transparent adhesive sheet 8 is from the FPC 7 When the protruding size is 20 mm, the peeling strength can be sufficiently ensured. Therefore, if the protruding size of the transparent adhesive sheet 8 from the FPC 7 exceeds 20 mm, the size of the transparent adhesive sheet 8 (reinforcing material) becomes large, and the transparent adhesive sheet 8 is in a state of sufficient peeling strength. (Reinforcement) The material cost of itself increases.

Further, the thickness of the transparent adhesive sheet 8 (reinforcing material) is preferably 0.1 to 3 mm. If the thickness of the transparent adhesive sheet 8 (reinforcing material) is less than 0.1 mm, the peeling strength of the FPC 7 cannot be ensured, and the FPC 7 is easily peeled off. If the thickness of the transparent adhesive sheet 8 (reinforcing material) is 3 mm or more, With a few millimeters against the bend of the FPC 7, the FPC 7 is difficult to bend at this time, and in terms of the module, the thickness of the attachment portion of the transparent adhesive sheet 8 (reinforcing material) is also thickened to the thickness of the casing. It also has an impact.

By such enhancement by the transparent adhesive sheet 8, it is possible to prevent or suppress the problem of peeling of the FPC 7, 7A when the module is incorporated. The transparent adhesive sheet 8 (reinforcing material) is particularly effective for stresses in which the FPCs 7 and 7A are twisted and peeled off from the ends.

As described above, according to the first embodiment, the bonded portions of the FPCs 7 and 7A are reinforced by covering the upper portions of the FPCs 7 and 7A in the width direction of the FPCs 7 and 7A by the transparent adhesive sheet 8 (reinforcing material). Thereby, the high connection reliability of the transparent sheets 3, 4 formed with the conductive films 3a, 4a and the FPCs 7, 7A can be ensured, so that FPC 7 and 7A can be prevented or suppressed from being bonded to the transparent sheets 3, 4, and FPC 7, the occurrence of the 7A stripping of the bad situation. Moreover, the transparent sheet (PET) used as a member of the touch panel sensor sheet module 1 is overlapped with the OCA as a transparent adhesive. The use of the sheet 8 (reinforcing material) can also reduce the risk caused by the new material arrangement, and can also use the transparent sheet (PET) and the OCA member trimmed in a large form, thereby The effective use of components can also be achieved. There is also an advantage that since the transparent adhesive sheet 8 (reinforcing material) is transparent, the state of the joint portion of the FPCs 7 and 7A can be confirmed after the transparent adhesive sheet 8 (reinforcing material) is attached.

Thereby, the flexibility is relatively good, and the overall thickness management is not required, and the increase in the number of man-hours as in the prior art is less, and the transparent sheets 3, 4 and the FPCs 7 and 7A in which the conductive films 3a, 4a are formed can be ensured. High connection reliability prevents the occurrence of defects such as peeling of the FPCs 7 and 7A during assembly after FPC bonding.

Further, in the first embodiment, although not specifically described, the transparent adhesive sheet 8 (reinforcing material) is not fixed to the short-line shape of the figure as shown in the figure, and various shapes are also conceivable (for example, The circular or elliptical shape, etc., is also described in the embodiments described later. In this regard, an example thereof is shown in the following second embodiment.

(Embodiment 2)

In the first embodiment, each of the FPCs 7 and 7A is covered in the width direction by the strip-shaped transparent adhesive sheet 8 (reinforcing material), and attached to the transparent sheets 3 and 4, respectively. Although the case where the FPCs 7 and 7A are fixed has been described, in the second embodiment, the following description will be given: two transparent adhesive sheets 8B which are divided into two portions and which are wing-shaped as described later (reinforcing material) The FPCs 7 and 7A are respectively fixed to the transparent sheets 3 and 4 from the respective ends in the width direction above the FPCs 7 and 7A.

Fig. 5 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module 1B according to the second embodiment of the present invention. In FIG. 5, the same components as those of the components of FIGS. 1 and 2 are denoted by the same reference numerals, and their description will be omitted.

In FIG. 5, in the touch panel sensor sheet module 1B of the second embodiment, the FPC joint portions of the FPCs 7 and 7A are reinforced by the both ends of the joint portion in the width direction of the FPC 7. Two sheets of transparent adhesive sheet 8B (reinforcing material) are respectively attached to the transparent sheet 3 Upper, thereby fixing the FPC joint of the FPC 7. Further, similarly, the FPC joint portions of the FPC 7A are fixed to the transparent sheets 4 from the both end portions of the joint portion in the width direction of the FPC 7A. Here, only the two transparent adhesive sheets 8B (reinforcing materials) having wings are attached to the portions where the FPCs 7 and 7A are peeled off. The planar shape of the two transparent adhesive sheets 8B is configured such that the width of the FPC 7 and 7A sides is wide, and the width of the transparent sheets 3 and 4 is narrow, although the width is narrowed from the narrow side to the wide side. Side, but can also be connected with a curve with a specific radius of R. Further, the planar shape of the two transparent adhesive sheets 8B may be formed in an L shape or an inverted L shape, and one side of the L shape is attached to the FPC 7, 7A side, and the L shape is not bent. The outside of the side is located on the side of the sensor portion 9 in an opposing manner. The outer shape of one side of the bent portion is formed by a curved line or a diagonal line so that the bent portion between the one side and the other side of the L-shaped or inverted L-shape becomes a wide width.

With respect to the transparent adhesive sheet 8B (reinforcing material), it is not necessary to cover the entire upper surface of the electrode terminal portion (electrode terminal group) corresponding to the FPC 7 in the width direction of the FPC 7 as in the transparent adhesive sheet 8 of the above-described first embodiment. It is possible to cover a partial region of both ends of the electrode terminal portion region of the FPC 7 with the transparent adhesive sheet 8B and a wing-shaped reinforcing material divided into two portions above the transparent sheet 3. The wing-shaped transparent adhesive sheet 8B has a wide width on the FPC 7 side and a narrow width on the side of the transparent sheet 3, and the reinforcing adhesive sheet 8B has a stronger reinforcing strength in terms of reinforcing strength. In terms of the stress of twisting, the joint of the FPC 7 is also not easily peeled off. Regarding the wing-shaped transparent adhesive sheet 8B, although the width and the narrow width are connected in a straight line on only one side, the width and the narrow width may be connected in a straight line on both sides, and R is provided on one side or both sides and is connected between the wide and narrow sides by a curve.

The transparent adhesive sheet 8B (reinforcing material) is a sheet made of a transparent sheet of PET material bonded to a double-sided adhesive OCA, and the attachment area is preferably as a single side and a transparent sheet 3 from FPC 7 The electrode wiring portion extends in a size of 2 to 20 mm. If the protrusion amount on one side of the FPCs 7 and 7A is less than 2 mm, the effect is not obtained when the FPC 7 and 7A are subjected to the peeling stress, and the peeling is easy. On the contrary, if the protrusion of the FPC 7 and 7A is on one side, Up to 20mm, it can be charged Separate to ensure peel strength. If the protrusion amount on one side of the FPCs 7 and 7A exceeds 20 mm, the size of the transparent adhesive sheet 8B (reinforcing material) becomes large, and the material cost of the transparent adhesive sheet 8B (reinforced material) itself also increases.

Further, the thickness of the transparent adhesive sheet 8B (reinforcing material) is preferably 0.1 to 3 mm. If the thickness of the transparent adhesive sheet 8B (reinforcing material) is less than 0.1 mm, the peeling strength of the FPC 7 and 7A cannot be ensured, and the peeling strength is easily obtained. If the thickness of the transparent adhesive sheet 8B (reinforcing material) is 3 mm or more, With a few millimeters against the curved portion of the FPC 7, 7A, it is difficult to bend at this time, and in terms of the module, the thickness of the attachment portion of the transparent adhesive sheet 8B (reinforcing material) is also thickened to the thickness of the casing. It also has an impact.

The transparent adhesive sheet 8B of the second embodiment is different from the transparent adhesive sheet 8 of the first embodiment in that the transparent adhesive sheet (reinforcing material) is not covered as shown in Fig. 1 in the width direction to correspond to the FPC connection. One transparent adhesive sheet 8 (reinforcing material) on the entire upper surface of the electrode wiring, and the transparent adhesive sheet 8B (reinforcing material) are divided into two pieces, so that the FPC 7 and the 7A side have a wider wing shape to the FPC 7 Enhancement on both sides of 7A. Although the transparent adhesive sheet 8B (reinforcing material) causes an increase in the attachment work time, the overall size of the transparent adhesive sheet 8B (reinforcing material) can be reduced. The area above the FPCs 7 and 7A corresponding to the electrode wiring for FPC connection in the width direction is preferably about 1 to 5 mm. If it is less than the range, the fixing effect is insufficient, and when it is larger than the range, only the fixed effect is excessive, and the material cost is also consumed.

According to the second embodiment, the two sheets of the wing-shaped transparent adhesive sheet 8B (reinforcing material) having a small size can prevent or inhibit the application of a load such as when the module is incorporated, resulting in the FPC 7, 7A. Disadvantages of stripping. The transparent adhesive sheet 8B (reinforcing material) is particularly effective for stresses in which the FPCs 7 and 7A are twisted and peeled off from the ends.

Thereby, the flexibility is relatively good, and the overall thickness management is not required, and the increase in the number of man-hours as in the prior art is less, and the transparent sheets 3, 4 and the FPCs 7 and 7A in which the conductive films 3a, 4a are formed can be ensured. High connection reliability to prevent or inhibit assembly after FPC bonding At the time, the occurrence of defects such as the peeling of FPC 7, 7A.

(Embodiment 3)

In the first and second embodiments, the transparent adhesive sheets 8 and 8B (reinforcing materials) having a strip shape and a wing shape in plan view as a single-sided adhesive fixing material have been described. However, in the third embodiment, The two transparent adhesive sheets 8C (reinforcing materials) described later are respectively disposed outside the joint portions of the widthwise direction and the transparent sheets 3 and 4 except for the joint portions of the FPCs 7 and 7A. The case where the FPCs 7 and 7A are attached and fixed to the transparent sheets 3 and 4, respectively, will be described.

Fig. 6 is a perspective view showing another fixing example of the FPC joint portion in the touch panel sensor sheet module 1C according to the third embodiment of the present invention. In FIG. 6, the same components as those of the components of FIGS. 1 and 2 are denoted by the same reference numerals, and their description will be omitted.

In the touch panel sensor sheet module 1C of the third embodiment, a double-sided adhesive transparent adhesive sheet is attached to the joint surface (back surface) of the FPC 7 and the anisotropic conductive film 6 in FIG. Material 8C (reinforcing material) as a countermeasure against reinforcement.

The transparent adhesive sheet 8C (reinforcing material) does not require a PET material of a transparent sheet material, so that the OCA of the double-sided adhesive sheet is interposed between the FPC 7, 7A and the adhesive sheets 3 and 4 as a double-sided tape. Attach the two separately. The attachment area of the transparent adhesive sheet 8C (reinforcing material) is set to be both sides of the FPC 7 in which a plurality of conductive films 7c are not formed as shown in FIG. 7, and there is no problem as long as the effective terminal is not covered (the dummy terminal can be covered) ). The arrangement of the transparent adhesive sheet 8C is preferably a width W within a range of 2 mm width or more and 5 mm width (FPC width direction) which is no effective terminal from the FPC outline end. If the width W of the transparent adhesive sheet 8C is less than 2 mm, the degree of reinforcement is weak in terms of strength. If the width W of the transparent adhesive sheet 8C exceeds 5 mm, the effective terminal arranged in the center is covered. The safety standard for the peeling of the thermocompression bonding portion is a stress of 5 N (Newton) / cm, and the safety standard of the peeling of the reinforcing portion is also set to withstand a stress of 5 N/cm. Here, to bear the total Set the stress of 10N/cm.

The thickness of the transparent adhesive sheet 8C (reinforcing material) is preferably 0.1 to 0.3 mm. If the thickness of the transparent adhesive sheet 8C (reinforcing material) is less than 0.1 mm, the peeling strength cannot be ensured, and the FPC 7, 7A is easily peeled off. If the thickness of the transparent adhesive sheet 8C (reinforcing material) exceeds 0.3 mm, there is concern about adhesion. The agent overflows and the pressure unevenness of the crimping tool when the thermocompression bonding of the anisotropic conductive film 6 is performed.

As described above, according to the third embodiment, the double-sided adhesive transparent adhesive sheet 8C (reinforcing material) is provided on both sides of the FPCs 7 and 7A and between the FPCs 7 and 7A and the adhesive sheets 3 and 4. Therefore, even when stress is applied to the FPCs 7 and 7A at the time of module assembly or the like, it is possible to prevent or suppress the peeling of the FPCs 7 and 7A. The transparent adhesive sheet 8C (reinforcing material) is particularly effective for stresses in which the FPCs 7 and 7A are twisted and peeled off from the ends.

Thereby, the flexibility is relatively good, and the overall thickness management is not required, and the increase in the number of man-hours as in the prior art is less, and the transparent sheets 3, 4 and the FPCs 7 and 7A in which the conductive films 3a, 4a are formed can be ensured. High connection reliability prevents the occurrence of defects such as peeling of the FPCs 7 and 7A during assembly after FPC bonding.

Further, in the third embodiment, the case where two transparent adhesive sheets 8C (reinforcing materials) are interposed on both sides of the joint portion of the FPCs 7 and 7A and the transparent sheets 3 and 4 are described. The FPCs 7 and 7A are respectively attached and fixed to the transparent sheets 3 and 4 between the two side regions of the joint portion. However, the present invention is not limited thereto, and may be combined with the transparent adhesive sheet 8 of the above-described Embodiment 1 or 2. This embodiment is used together with 8B.

(Embodiment 4)

In the above-described first to third embodiments, the case where the peeling structures of the FPCs 7 and 7A are formed by using the transparent adhesive sheets 8, 8B or 8C of the reinforcing sheets has been described. However, in the following embodiments 4 to 6, A description will be given of a case where an anti-peeling structure is formed by the shape of the FPC 7, 7A itself without using a separate member such as the transparent adhesive sheet 8, 8B or 8C.

8 is a view showing a touch panel sensor sheet module in Embodiment 4 of the present invention; A top view of an example. Fig. 9 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module 1D of Fig. 8. In addition, in FIGS. 8 and 9, the same components as those of the components of FIGS. 1 and 2 are denoted by the same reference numerals, and their description is omitted.

In the touch panel sensor sheet module 1D of the fourth embodiment, the outer peripheral portions of the transparent sheets 3 and 4 which are mutually orthogonal to the conductive films 3a and 4a are formed in Figs. 8 and 9 respectively. The FPC connection electrode wiring (output side) is bonded to the external connection electrode wiring via the anisotropic conductive film 6D. The transparent sheets 3 and 4 mainly use a PET material, and the transparent sheet 3 is formed with a conductive film 3a via an adhesive layer, and the transparent sheet 4 thereon is formed with a conductive film 4a via an adhesive layer. As the anisotropic conductive film 6D, ACF, ACP or the like can be used, and an appropriate member such as the size of the conductive particles can be selected in accordance with the distance between the electrode wirings for connection. Basically, the anisotropic conductive film 6D has substantially the same width as the outer width of the FPC 7D on the outer peripheral portion of the transparent sheets 3 and 4 (the so-called width direction, which is the left-right lateral direction on the drawing), and the minimum is The shape of the electrode wiring portion for connection is covered. Since the FPC joint portion uses a PET material instead of glass as a liquid crystal module, especially when the heating is performed at 180 degrees Celsius to 200 degrees Celsius, the substrate is deformed and melted together with the transparent sheets 3 and 4. Therefore, in the touch panel sensor sheet module 1D, an anisotropic conductive film 6D for low temperature connection which can be joined at 150 degrees Celsius or less is used.

In the fourth embodiment, the FPC outer shape (output electrode wiring side 7Da) width b-b' of the joined portion is wider than the FPC outer shape width a-a' of the portion drawn toward the input electrode wiring side 7Db. Here, the wide portion 7Dd "(b-b')-(a-a')" protruding outward is not provided with the effective wiring and the dummy wiring. The wide portion 7Dd on the left and right sides of the FPC 7D and the transparent sheet 3 are firmly bonded by the adhesive resin material of the anisotropic conductive film 6D.

The FPC outer shape (output electrode wiring side) width b-b' of the portion joined by the anisotropic conductive film 6D is preferably wider than the FPC outer shape width a-a' of the portion pulled toward the input electrode wiring side 7Db. ~30mm. If it is a single side of the left and right wide portions 7Dd, it is 2.5 to 15 mm wide. If the width of the left and right wide sections 7Dd is less than 2.5 on one side In the case of mm, the effect of improving the joint strength is small. On the other hand, if the one side of the wide-width portion 7Dd which is widely protruded is 15 mm, the effect of improving the joint strength is sufficient, and the wide-width portion 7Dd which is broadly protruded When the one side exceeds 15 mm, the size of the FPC 7D becomes undesirably large, and the metal tool for pressure bonding at the time of heat and pressure bonding also becomes large, and other problems such as securing the joint uniformity are also caused.

Further, it is preferable that the FPC outer shape of the portion joined by the anisotropic conductive film 6D (the output electrode wiring side of the transparent sheet joining side 7Da) has a width b-b' that is wider than the portion that is pulled toward the input electrode wiring side 7Db. The FPC has a width a-a' widened profile with a radius of 0.5 to 15 mm. In short, the width (b) of the FPC (the output electrode wiring side of the transparent sheet joining side 7Da) of the FPC (the radius R0.5 mm to the radius R15 mm) is widened to a width of a narrow width FPC. -a' shape and shape. The purpose of preventing the following is to incorporate the electrode wiring group (the input electrode wiring side of the control substrate connection side 7Db) into the slot of the control substrate when assembled as the touch panel sensor sheet module 1D. At the same time, a large load is sometimes applied, especially when a force for twisting and pulling is applied to the joint portion through the anisotropic conductive film 6D, and if there is no R, the base of the FPC 7D itself is also present. The tear of the material.

Thus, the FPC 7D having a wide FPC outline (output electrode wiring side) width b-b' and a transparent sheet 3 are formed by using the anisotropic conductive film 6D of the FPC 7D length or longer than the FPC 7D. The connection electrode group at the front end of the plurality of conductors 3a is joined, and the area of the left and right wide portions 7Dd is increased, whereby the joint strength can be enhanced, thereby ensuring high connection reliability.

In the characteristic configuration of the fourth embodiment, the FPC outer shape (output electrode wiring side) of the portion joined to the transparent sheets 3 and 4 is wider than the FPC outer shape width a-a of the portion pulled toward the input electrode wiring side 7Db. 'The ground is widened. The FPC outer shape width connected by a connector or the like is not particularly limited. Regarding the shape of the FPC wide portion, it is not fixed to the shape as shown in the figure, and the FPC outer shape can also assume various shapes, which will be described later. It is also described in the form 5 of the application.

As described above, according to the fourth embodiment, the FPC 7D outer shape width b- including the joint portion and the joint portion and the entire portion (or a portion of the region, here, the entire region) joined via the anisotropic conductive film 6D is included. The b' is symmetrically wide in the form of a wide width portion 7Dd which is bilaterally symmetrically wider than the outer width a-a'.

Thereby, the wide portion 7Dd of the left and right sides of the FPC 7D and the transparent sheet 3 are attached by the anisotropic conductive film 6D, and the wide portion 7A'd of the FPC 7A' and the transparent sheet 4 are used. The anisotropic conductive film 6D is bonded and then bonded, whereby the joint portion is reinforced, whereby the flexibility is relatively good, and the overall thickness management is also easy, as in the prior art, the man-hour is not increased, and the conductive film is formed. The high connection reliability of the transparent sheets 3 and 4 of 3a and 4a and the FPC 7D can suppress the occurrence of defects such as peeling of the FPC 7D at the time of assembly after FPC bonding.

(Embodiment 5)

In the above-described fourth embodiment, the FPC outer shape (output electrode wiring side 7Da) is wider than the FPC outer shape width of the portion drawn toward the input electrode wiring side 7Db, and protrudes in the outer direction. In the fifth embodiment, the length of the anisotropic conductive film 6D is long and the area of the anisotropic conductive film 6D is widened. However, in the fifth embodiment, the case where the FPC has a wide width is also provided in the connection electrode portion. The web is protruded in the two outer directions, but at least one of the two sides of the plurality of conductive films 7c in the FPC 7E is bent toward the outer direction, and is disposed at the front end. Accordingly, the plural of the transparent sheet 3 is used. At least one of the two sides of the strip conductive film 3a is disposed to be curved inwardly, and the anisotropic conductive film 6E is interposed therebetween to be bonded to each other.

FIG. 10 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module 1E according to the fifth embodiment of the present invention. In addition, in FIG. 10, the same components as those of the components of FIGS. 8 and 9 are denoted by the same reference numerals, and their description is omitted.

In the touch panel sensor sheet module 1E of the fifth embodiment, as in the fourth embodiment, the FPC outer shape of the portion joined to the transparent sheets 3 and 4 (transparent sheet joining side 7Ea) The output electrode wiring side width b-b' is wider than the FPC outer shape width a-a' of the portion drawn toward the input electrode wiring side of the control substrate connection side 7Eb. The touch panel sensor sheet module 1E of the fifth embodiment differs from the above-described fourth embodiment in the FPC portion "(b-b')-(a-a')" which is widened in width. Each of the effect wirings for bonding the left and right lateral transparent sheets 3 to the FPC 7E is provided. In other words, the FPC 7E has the same width as the FPC 7E, and the two sides of the plurality of conductive films 7c in the FPC 7E are the same as those in the above-described fourth embodiment. Each of at least one (here, two) conductive films 7c1 is bent in the outer direction and disposed at the front end. Accordingly, at least one of the two sides of the plurality of conductive films 3a of the transparent sheet 3 is provided. Here, the conductive film 3a1 is bent inwardly and disposed in the lateral direction, and the wide portion 7Dd of the lateral FPC 7D and the transparent sheet 3 are bonded by the anisotropic conductive film 6D, thereby being applied to the conductive film 7c1. An anisotropic conductive film 6E is interposed between the conductive film 3a1 and the two are bonded to each other. Thereby, the deviation of the arrangement due to the narrow pitch and thermal contraction between the plurality of effective wirings can be alleviated.

The FPC outer shape (output electrode wiring side) width b-b' of the portion joined by the anisotropic conductive film 6E is preferably wider than the FPC outer width of the portion drawn toward the input electrode wiring side in the range of 5 mm to 30 mm. A-a'. Further, it is preferable that the FPC outer shape (output electrode wiring side) width b-b' is wider than the FPC outer shape width a-a' of the portion drawn toward the input electrode wiring side of the control substrate connection side 7Eb. R from 0.5mm to 15mm. This case is the same as the case of the above-described first embodiment.

If a laterally effective wiring (here, two sides on each side) is provided in a portion of the front end of the FPC 7E, the electrode wirings of the transparent sheets 3 and 4 correspond to the anisotropic conductive film 6E. The electrode wirings of the transparent sheets 3, 4 are extended in such a manner as to join the two sides of the FPC profile. The advantage of this case is that the electrode wiring pitch (the same output number) of the transparent sheets 3, 4 side can be increased, and the electrode wiring is led out from both sides of the FPC profile. Therefore, it is also possible to suppress the variation in the cumulative pitch of the conductive wiring with respect to the extension of the direction of the crimping tool with respect to the heat-and-pressure bonding. Further, the electrode wiring on the transparent sheets 3 and 4 is covered with the anisotropic conductive film 6E or the protective insulating material (PET or the like), whereby the short circuit of the wiring can be prevented. Thereby, with this form, the touch panel sensor sheet module 1E with high connection reliability and effective for wiring design can be realized.

As described above, according to the fifth embodiment, each of the electrode wirings joined as the effective wiring is provided via the anisotropic conductive film 6E in the wide FPC portion which is bilaterally symmetrical. That is, the alignment direction of the electrode wirings of at least one (here, two) conductive films 3a and 4a of each of the plurality of conductive films 3a and 4a in which the transparent sheets 3 and 4 are arranged is changed. In the width direction of the FPCs 7E and 7A', at least one (here, two) of each of the plurality of conductive films 3a and 4a in which the FPCs 7E and 7A' are arranged is electrically conductive. The electrode wires 3a and 4a are arranged in the direction in which the electrode wires are arranged, and the electrode wires are disposed in the width direction of each of the FPCs 7E and 7A' to be joined to each other.

Thereby, the flexibility is relatively good, and the overall thickness management is also relatively easy. As in the prior art, the man-hour is not increased, and the high reliability of the transparent sheet formed with the conductive film and the FPC is ensured, thereby suppressing the FPC. The occurrence of defects such as peeling during assembly after joining.

(Embodiment 6)

In the above-described fourth embodiment, the FPC outer shape (output electrode wiring side 7Da) is wider than the FPC outer shape width of the portion drawn toward the input electrode wiring side 7Db, and protrudes in the outer direction. In the sixth embodiment, the length of the anisotropic conductive film 6D is long and the area of the anisotropic conductive film 6D is widened. However, in the sixth embodiment, the case where the anisotropic conductive film 6F is included is described. The outer shape of the FPC on the region in the width direction near the front side boundary line (the portion where the peeling force is first applied) is in the form of a projecting wide portion 7Fd which is a projection-shaped wide FPC portion, and protrudes from the joint portion toward both outer sides.

Fig. 11 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module 1F according to the sixth embodiment of the present invention. It is to be noted that the same components as those of the components of FIGS. 8 and 9 are denoted by the same reference numerals, and their description will be omitted.

In the touch panel sensor sheet module 1F of the sixth embodiment, the FPC outer shape of the portion joined to the transparent sheets 3 and 4 (the output of the transparent sheet joining side 7Fa) is characteristic. The electrode wiring side) width b-b' is wider than the FPC outer shape width a-a' of the portion drawn toward the input electrode wiring side of the control substrate connection side 7Fb, but not all the joint portions are wide, and the system will include each The FPC shape on the region of the near-front boundary line (the portion where the peeling force is initially applied) in the graph of the anisotropic conductive film 6F bulges toward the wide portion 7Fd of the projection-like wide FPC portion. In the projecting wide portion 7Fd "(b-b')-(a-a')") which is a projection-shaped wide FPC portion, neither the effective wiring nor the dummy wiring is provided.

It is preferable that the FPC outer shape (output electrode wiring side) width b-b' of the joint portion joined by the anisotropic conductive film 6F is set to be wider than the FPC outer shape width a-a' of the portion drawn toward the input electrode wiring side. 1~15mm. Further, it is preferable that the FPC outer shape (output electrode wiring side) width b-b' is wider than the FPC outer shape width a-a' of the portion drawn toward the input electrode wiring side with a shape R of a radius of 0.1 to 5 mm. The effect of improving the FPC bonding strength is less than that of the above-described fourth and fifth embodiments. However, if the protruding portion of the bulging degree is too wide, the transparent sheet is passed through the anisotropic conductive film 6F. At the time of joining, there is a problem that the protruding portion is bent to cause a problem of joining, and the two wide portions 7Fd which are bulged are provided in order to reduce the problem of joining.

As described above, according to the sixth embodiment, the FPC 7F has a shape other than the wide portion 7Fd which is bulged in a region including the front side boundary line in the width direction of the anisotropic conductive film 6F in the width direction thereof. Protruding toward both sides.

Thereby, the flexibility is relatively good, the overall thickness management is also relatively easy, as in the prior art, the working time is not increased, and the transparent sheet forming the conductive film and the FPC are ensured. High connection reliability makes it possible to suppress the occurrence of defects such as peeling during assembly after FPC bonding.

(Embodiment 7)

In the seventh embodiment, the transparent adhesive sheet 8G is attached to the wide portion 7D which protrudes from the second embodiment of the fourth embodiment, as shown in Fig. 2 of the first embodiment. The transparent adhesive sheet 8G has a short strip shape and covers the upper portion of the wide portion with a specific width so that both ends extend only a certain distance from the width direction of the FPC 7D. In summary, the content of the above-described first embodiment is combined with the above-described fourth embodiment as the seventh embodiment.

Fig. 12 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module 1G according to the seventh embodiment of the present invention. In FIG. 12, the same components as those of the components of FIGS. 2 and 9 are denoted by the same reference numerals, and their description is omitted.

In the touch panel sensor sheet module 1F of the sixth embodiment, a wide portion 7Dd is provided, and the wide portion 7Dd includes a joint portion joined via the anisotropic conductive film 6D. The FPC 7D outer shape width b-b' of all the regions is symmetrically wider than the outer shape width a-a'. Further, similarly, the wide portion 7A'd is provided, and the wide portion 7A'd is formed to have an outer width b-b' of the FPC 7A' including all the regions of the joint portion joined via the anisotropic conductive film 6D. The left and right sides are symmetrically wider than the outer shape width a-a'.

In the touch panel sensor sheet module 1F of the sixth embodiment, a plurality of electrodes of the conductive films 3a and 4a which are arranged in the exposed portions of the peripheral surfaces of the transparent sheets 3 and 4 which are stacked one on another are arranged. The wiring and the bonding electrode wiring portions of the electrode wirings of the plurality of conductive films 7c arranged in the FPC 7D and 7A' are further fixed to the transparent sheet 3 from one of the FPCs 7D and 7A' (FPC 7D). And a transparent adhesive sheet 8G of each specific size is attached to the transparent sheet 4 from the other of the FPCs 7D and 7A' (FPC 7A').

With the above, according to the seventh embodiment, by covering the wide portion 7Dd of the FPC 7D The square transparent adhesive sheet 8G and the transparent adhesive sheet 8G covering the upper portion 7A'd of the FPC 7A' can securely fix the joint portion as compared with each of the first and fourth embodiments. The peeling of the FPC 7D, 7A' can be more reliably prevented.

(Embodiment 8)

In the eighth embodiment, a case will be described in which the wide portion 7Dd which protrudes in Fig. 9 of the above-described fourth embodiment and the transparent sheet 3 are deposited as shown in Fig. 6 of the third embodiment. A double-sided adhesive transparent adhesive sheet 8H (reinforcing material) is attached to the double-sided adhesive transparent adhesive sheet 8C (reinforcing material). In summary, the content of the above-described third embodiment is combined with the above-described fourth embodiment as the eighth embodiment.

Fig. 13 is a perspective view showing a fixing example of the FPC joint portion in the touch panel sensor sheet module 1H according to the eighth embodiment of the present invention. It is to be noted that the same components as those of the components of FIGS. 6 and 9 are denoted by the same reference numerals, and their description will be omitted.

In the touch panel sensor sheet module 1H of the eighth embodiment, a wide portion 7Dd is provided which protrudes toward both sides, and the wide portion 7Dd is included in the transparent sheet 3 via the transparent sheet 3 The FPC 7D outer shape width b-b' of the entire region of the joined portion of the anisotropic conductive film 6D is symmetrically wider than the outer shape width a-a'. Further, similarly, the wide portion 7A'd is provided to protrude toward both sides, and the wide portion 7A'd is an entire area of the joint portion which is joined to the transparent sheet 4 via the anisotropic conductive film 6D. The FPC 7A' outer shape width b-b' is symmetrically wider than the outer shape width a-a' attached thereto.

In the touch panel sensor sheet module 1F of the eighth embodiment, a plurality of electrodes of the conductive films 3a and 4a which are arranged in the exposed portions of the peripheral surfaces of the transparent sheets 3 and 4 which are stacked one on another are arranged. The wiring and the bonding electrode wiring portions of the electrode wirings of the plurality of conductive films 7c arranged in the FPC 7D and 7A' are further fixed to the wide portions 7Dd and the transparent sheets 3 which are protruded toward both sides of the FPC 7D. A double-sided adhesive transparent adhesive sheet 8H (reinforcing material) is interposed therebetween, and the wide portion 7A'd protruding toward both sides of the FPC 7A' is attached. A double-sided adhesive transparent adhesive sheet 8H (reinforcing material) is interposed between the transparent sheet 4 and attached thereto.

As described above, according to the seventh embodiment, the anisotropic conductive film 6D and the transparent adhesive sheet 8H are interposed between the transparent sheet 3 and the wide portion 7Dd of the FPC 7D to be attached, and the transparent sheet is attached. The anisotropic conductive film 6D and the transparent adhesive sheet 8H are interposed between the material 4 and the wide portion 7A'd of the FPC 7A', and are attached to each other, thereby being compared with each of the above-described third and fourth embodiments. The joint can be fixed more firmly, so that the peeling of the FPC 7D, 7A' can be more reliably prevented.

Further, the first to eighth embodiments of the present invention can be variously modified within the scope of the claims. In other words, the embodiment obtained by combining the technical means appropriately changed within the scope of the claims of the present application is also included in the technical scope of the present invention. Further, at least two embodiments of the above-described first to eighth embodiments may be combined.

As described above, the present invention has been exemplified using preferred embodiments 1 to 8 of the present invention, but the present invention is not limited to the embodiments 1 to 8. It should be understood that the present invention should be understood only by the scope of the claims. It is to be understood that those skilled in the art can, in accordance with the description of the preferred embodiments of the present invention, and the equivalent of It is to be understood that the contents of the patents, patent applications, and documents cited in the present specification are specifically described in the present specification, and the contents thereof are hereby incorporated by reference.

[Industrial availability]

In the field of the capacitive touch panel sensor module and the manufacturing method of the touch panel system module using the same, the flexibility is relatively good, and the overall thickness management is relatively easy and will not The working time is increased, and the high connection reliability between the transparent sheet on which the conductive film is formed and the FPC can be ensured, and the occurrence of defects such as peeling during assembly after FPC bonding can be suppressed, and the capacitive touch panel is sensed. Slice module It is mounted on the display screen of a display device such as a liquid crystal display device, and detects the pointed position by the instruction operation of the pointer corresponding to the display content, and can be used for personal computers (PCs), tablet terminals, digital signage, and electronic blackboards. In the middle, multiple touches can be achieved.

1‧‧‧Touch panel sensor sheet module

2‧‧‧ Covering glass

3, 4‧‧‧Transparent sheet

3a, 4a‧‧‧Transparent sheet of conductive film (electrode wiring)

5‧‧‧Protective film

6‧‧‧Anisotropic conductive film

7‧‧‧FPC (Flexible Printed Wiring Substrate)

7a‧‧‧FPC transparent sheet joint side (output side)

7b‧‧‧FPC control board connection side (input side)

7c‧‧‧FPC conductive film

8‧‧‧Transparent adhesive sheet (reinforced material)

9‧‧‧Sensor part (conductive film part)

Claims (6)

A touch panel sensor sheet module comprising: a plurality of electrical conductors disposed on a flat panel to produce a position information signal; a first electrode coupled to the electrical conductor and disposed on the plane And a flexible wiring board provided with a second electrode connected to the first electrode and a wiring connected to the second electrode; and attached to at least a boundary portion between the flexible wiring substrate and the planar plate Reinforced materials are included. The touch panel sensor sheet module of claim 1, comprising: a first transparent sheet having a plurality of electric conductors arranged on the flat surface; and a second transparent sheet having a surface Forming a plurality of conductors arranged on another planar plate different from the planar plate, and the second transparent sheet is laminated on the conductive body so as to intersect the conductive body formed on the surface of the first transparent sheet The first transparent electrode is placed on each of the first transparent sheet and the second transparent sheet, and is connected to the second electrode by an anisotropic conductive film. The touch panel sensor module according to claim 1 or 2, wherein the reinforcing material covers the end of the connecting portion of the flexible wiring board including the first electrode and the second electrode This reinforcement is attached. The touch panel sensor module according to claim 1 or 2, wherein the reinforcing material is attached to the boundary portion and is located at two locations corresponding to a width direction of the flexible wiring board. The touch panel sensor module of claim 1 or 2, wherein the reinforcing material is interposed and attached between the flexible wiring substrate and the flat plate. A manufacturing method of a touch panel system module, comprising the steps of: manufacturing a touch panel sensor sheet module according to claim 1 or 2; and the touch panel sensor sheet module The electrode terminal group on the opposite side of the flexible wiring board is electrically connected to the electrode terminal group of the control board.