TWI528238B - Touch panel device - Google Patents

Description

Touch panel device

The present invention relates to a touch panel device.

Various studies have been made on the structure of a touch panel device for detecting an input position. As an example, a capacitive touch panel device is known. For example, the touch panel device disclosed in Patent Document 1 and Patent Document 2 has a touch panel which is formed by providing a dielectric layer between a pair of substrates, each of which has a predetermined A plurality of conductors in the shape of a pattern. In addition, as shown in the exploded perspective view of the touch panel of FIG. 10, in the touch panel, in each end portion of the plurality of electrical conductors formed on each substrate, a lead wire connected at one end is formed on the substrate. In the peripheral portion, the other ends 101 and 102 of the lead wires are arranged in a bundle at a predetermined portion of the side edge portions 103 and 104 of the respective substrates. As shown in the enlarged plan view of the main part of the touch panel of FIG. 11 , in the top view of the touch panel, the other ends 101 , 102 of the lead wires are formed perpendicular to the side edges 105 of the touch panel, and the touch panel is The side edge 105 is a side edge of the touch panel in which the other ends 101 and 102 of the respective lead wires are arranged in a bundle. In the touch panel device, by electrically connecting the terminals of the flexible wiring board to the other ends 101 and 102 of the lead wires arranged in a bundle, the touch signals can be guided to the external touch position determining circuit. To detect the touch position.

In such a touch panel device, in order to increase the ratio of the touch area to the entire area of the touch panel, it is desirable to make the peripheral portion of the touch panel in which the lead is disposed as narrow as possible (narrow frame). In order to achieve the above-described expectation, it is necessary to reduce the connection area (coincidence area) between the terminal of the flexible wiring board and the other end of each lead wiring, and accordingly, a flexible wiring board which needs to be disposed at the side edge portion of the touch panel is also generated. Terminal The need for miniaturization. Further, it is preferable that the main portion of the flexible wiring board (the portion that is drawn toward the side of the touch panel; the flexible wiring main body) is thinned.

Therefore, conventionally, the narrow frame of the touch panel is realized by minimizing the insertion length of the terminal connected to one end of the flexible wiring main body to the touch panel, and the width of the flexible wiring main body is also narrowed. As shown in FIG. 12, the terminal 112 connected to one end of the flexible wiring main body 111 whose width is formed to have a narrow width is formed in a shape that protrudes toward the side of the main body 111. The front end edge of the terminal 112 is formed in parallel to the side edge of the side edge portion of the touch panel to which the terminal 112 is mounted. Further, when the flexible wiring board 110 is placed on the touch panel 100 as shown in FIG. 13, a substantially triangular-shaped protruding portion 113 protruding toward the outer side of the touch panel 100 is formed in a portion near the terminal of the flexible wiring board 110. (the portion which is drawn by a single dot in the drawing), the wire 115 guided to the extending portion 112a of the terminal 112 is disposed on the protruding portion 113.

Prior art literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2003-173238 (Fig. 1, Fig. 5)

Patent Document 2: International Publication No. WO2011/111748

The touch panel device is used in such a manner that the touch panel is mounted on a surface of a liquid crystal display device, a CRT, or the like. At this time, the flexible wiring board is bent and connected to the touch position determining circuit. Along with the bending of the flexible wiring board, there is a problem that the terminal is peeled off at the connection portion between the terminal of the flexible wiring board and the touch panel, and the terminal of the flexible wiring board fixed to the lead wiring is easily peeled off. At this time, it is difficult to maintain a stable conduction state of the flexible wiring board and the lead wiring, and detection of the touch position becomes difficult.

Further, since a portion near the terminal of the flexible wiring board is formed with a substantially triangular-shaped protruding portion that protrudes to the outside of the touch panel, compactness is lacking, and further, there is a problem that when the touch panel device is mounted to In the case of a liquid crystal display device or a surface of a CRT or the like, the protruding portion becomes an obstacle and becomes a restriction on product design, so that The operability of the mounting operation is reduced.

The present invention has been made to solve the above problems, and an object thereof is to provide a touch panel device in which a flexible wiring board fixed to an outlet wiring is difficult to be peeled off and compactness can be improved.

The present invention provides a touch panel device, including: a touch panel, having: a first conductor layer disposed on one side of the dielectric layer; and a second conductor layer disposed on the dielectric layer The other surface side; and a flexible wiring board connected to the first conductor layer and the second conductor layer, the first conductor layer having: a plurality of first electrode portions arranged at intervals; and a plurality of a lead-out wiring, one end of which is independently connected to each of the first electrode portions, the second conductor layer includes: a plurality of second electrode portions arranged at intervals; and a plurality of second lead wires, one end and each second The electrode portions are independently connected, and the first wiring collecting portion and the second wiring collecting portion are disposed adjacent to each other at one side edge portion of the touch panel, and the other ends of the plurality of first lead wires are bundled to obtain the first a wiring collecting portion, the other ends of the plurality of second lead wires are bundled to obtain the second wiring collecting portion, and the flexible wiring board includes: a terminal, and the The wiring collecting portion and the second wiring collecting portion are electrically connected; and the flexible wiring main body is taken out from a side direction of the touch panel, the terminal comprising: a first terminal portion at one end of the flexible wiring main body The flexible wiring main body is integrally connected to be disposed to overlap the first wiring collecting portion; and the second terminal portion is connected to a side of the first terminal portion to be closer to a side edge of the flexible wiring main body Further extending outwardly and disposed to overlap the second wiring collecting portion, the second terminal portion having a side edge formed in a plane, connected to a side edge of the flexible wiring body, and disposed a side edge of one side edge portion of the touch panel of the second wiring collecting portion is substantially a plane; and an inclined side edge is disposed opposite to the side edge of the flat surface to face the second terminal portion The extending direction is inclined in such a manner that the interval between the side edges of the plane is narrowed.

Further, in the touch panel device, it is preferable that the other end of each of the second lead wires is disposed at a predetermined interval, and the plurality of wires are formed in the second terminal portion, and the plurality of wires have The other end of the second lead-out wiring and the front end portion of the lead wire are formed with respect to the second wiring formed at a front end portion overlapping the other end of the second lead-out wiring The side edges of one side edge portion of the touch panel of the portion are inclined.

Further, preferably, in each combination of the other end of each of the second lead wires and the tip end portion of each of the wires corresponding to the other end of each of the second lead wires, the respective combinations extend along the second terminal portion It is disposed in the outward direction and is formed to be substantially perpendicular to the inclined side edge of the second terminal portion.

According to the present invention, it is possible to provide a touch panel device in which the flexible wiring board fixed to the lead wiring is difficult to be peeled off and the compactness can be improved.

1‧‧‧First conductor layer

2‧‧‧Second conductor layer

3‧‧‧ dielectric layer

4‧‧‧Adhesive layer

5‧‧‧membrane body

6‧‧‧Adhesive layer

7‧‧‧Adhesive layer

8‧‧‧ display device

9‧‧‧Flexible wiring board

10‧‧‧Touch panel

11‧‧‧First electrode section

12‧‧‧First lead wiring

21‧‧‧Second electrode section

22‧‧‧Second lead wiring

91‧‧‧terminal

92‧‧‧Flexible wiring body

93‧‧‧Wire

94‧‧‧lateral edge

95‧‧‧ sloping side edges

96‧‧‧ front end

100‧‧‧Touch panel device

101‧‧‧Learn the other end of the wiring

102‧‧‧Learn the other end of the wiring

103‧‧‧lateral edge

104‧‧‧lateral edge

105‧‧‧lateral edge

110‧‧‧Flexible wiring board

111‧‧‧ Subject

112‧‧‧terminal

113‧‧‧Protruding

115‧‧‧ wire

121‧‧‧End

122‧‧‧The other end of the first lead-out wiring

123‧‧‧Regional section

221‧‧‧ one end

222‧‧‧The other end of the second lead-out wiring

223‧‧‧Regional section

112a‧‧‧Outreach

12a‧‧‧First wiring collection department

22a‧‧‧Second wiring collection department

4a‧‧‧Adhesive layer

91a‧‧‧First terminal

91b‧‧‧second terminal

91c‧‧‧ gap

92a‧‧‧lateral edge

93a‧‧‧ front end

96a‧‧‧ front end

96b‧‧‧ Main body

96c‧‧‧Intermediate

Z1‧‧‧ touch the first substrate

Z2‧‧‧Second transparent substrate

1 is a schematic cross-sectional view showing a capacitive touch panel device according to an embodiment of the present invention.

2(a) is a plan view showing a part of the capacitive touch panel shown in FIG. 1, and FIG. 2(b) is a plan view showing another part of the capacitive touch panel shown in FIG. 1.

3(a) and 3(b) are schematic cross-sectional views showing a modification of Fig. 1.

Fig. 4 (a) is a plan view showing a modification of Fig. 2 (a), and Fig. 4 (b) is a plan view showing a modification of Fig. 2 (b).

FIG. 5 is an enlarged plan view of a main part of the touch panel.

6 is a plan view showing a flexible wiring board included in the touch panel device of the present invention.

FIG. 7 is an enlarged plan view showing a main part of a state in which a terminal of a flexible wiring board is provided on a touch panel.

8 is a view for explaining an example of calculation of an inclination angle of an inclined side edge of a second terminal portion; schematic diagram.

FIG. 9 is a plan view showing a modification of the flexible wiring board included in the touch panel device of the present invention.

FIG. 10 is an exploded perspective view illustrating a structure of a conventional touch panel.

11 is an enlarged plan view of a main part of a conventional touch panel.

12 is a plan view of a conventional flexible wiring board connected to a touch panel.

FIG. 13 is an enlarged plan view showing a main part of a state in which a flexible wiring board is provided on a touch panel.

Embodiments of the present invention will be described below with reference to the drawings. Further, in order to easily understand the structure, each constituent element in each drawing is partially enlarged or reduced in size instead of the actual size.

1 is a schematic cross-sectional view showing a touch panel device according to an embodiment of the present invention. The touch panel device 100 is, for example, a capacitive touch panel device mounted on a display device such as a personal computer, a bank terminal (a cash dispenser), a ticket vending machine, an OA device, an electronic notebook, a PDA, a mobile phone, or the like. The panel device 100 includes a touch panel 10 having a first conductor layer 1 disposed on one surface side of the dielectric layer 3 and a second conductor layer 2 disposed on the other surface side of the dielectric layer 3, and a flexible wiring board 9, It is connected to the first conductor layer 1 and the second conductor layer 2.

In the configuration of the touch panel device 100 of the present embodiment, as shown in the cross-sectional view of FIG. 1 and the top view of FIG. 2( a ), the first conductor layer 1 includes a plurality of strip-shaped first electrode portions. 11. Arranged side by side at a predetermined interval on one surface side of the first substrate Z1; and a plurality of first lead wires 12, one end of which is electrically connected to each of the first electrode portions 11 independently. Further, as shown in the cross-sectional view of FIG. 1 and the top view of FIG. 2(b), the second conductor layer 2 includes a plurality of strip-shaped second electrode portions 21 which are arranged side by side at a predetermined interval on the second substrate. One surface side of Z2; and a plurality of second lead wires 22, one end of which is independently connected to each of the second electrode portions.

The first conductor layer 1 and the second conductor layer 2 are first electrode portion 11 and second electrode The respective longitudinal directions of the pole portions 21 are stacked in a plan view in the plan view (in the present embodiment, the respective longitudinal directions of the first electrode portion 11 and the second electrode portion 21 are stacked so as to be perpendicular to each other in plan view). Further, as shown in FIG. 1, the first conductor layer 1 and the second conductor layer 2 are separated from each other by the second electrode portion 21 and the other surface side of the first substrate Z1 (the surface side on which the first electrode portion 11 is not formed) In the opposite way, the adhesive layer 4 is adhered. Here, in the touch panel device 100 shown in FIG. 1, the laminated structure of the adhesive layer 4 and the first substrate Z1 forms the dielectric layer 3. Further, the adhesive layer 4 may be a usual transparent adhesive such as an epoxy resin or an acrylic resin, or may be an adhesive layer containing a core material composed of a transparent film of a polyester resin. Further, the adhesive layer 4 may be formed by laminating a plurality of sheet-like adhesive materials, and a plurality of types of sheet-like adhesive materials may be stacked to form the adhesive layer 4. Although the thickness of the adhesive layer 4 is not particularly specified, it is preferably 20 μm to 500 μm in practical use.

In addition, in the structure of the touch panel device 100 of FIG. 1 , the first conductor layer 1 and the second conductor layer 2 have the second electrode portion 21 and the other surface side of the first substrate Z1 (the first electrode is not formed) The surface side of the portion 11 is adhered to each other, but is not limited thereto. For example, as shown in (a) of FIG. 3, the first electrode portion 11 and the second electrode portion 21 may pass through each other. The adhesive layer 4a is bonded. In the case of such a structure, the adhesive layer 4a constitutes the dielectric layer 3. Further, as shown in (b) of FIG. 3, the first conductor layer 1 may be formed on one surface side of the transparent substrate Z, and the second conductor layer 2 may be formed on the other surface side. In the case of such a structure, the transparent substrate Z constitutes the dielectric layer 3.

For example, as shown in FIG. 1, when the touch panel device 100 is mounted on a display device such as a bank terminal, a ticket vending machine, or a personal computer, a film body 5 such as an anti-fouling sheet is superposed on one of the first substrates Z1 through a transparent adhesive layer 6. The surface side (the surface side on which the first electrode portion 11 is formed) is placed on the display device 8 through the transparent adhesive layer 7 so that the exposed surface of the film body 5 becomes the touch surface.

The first substrate Z1 and the second substrate Z2 are preferably made of a material having a high dielectric constant and high transparency, and specifically, polyethylene terephthalate (PET), polyimine (PI), polyethylene naphthalate (PEN), polyether oxime (PES), polyetheretherketone (PEEK), polycarbonate (PC), polypropylene (PP) a flexible film such as polyamine (PA), polyacrylic acid (PAC), acrylic acid, amorphous polyolefin resin, cyclic polyolefin resin, aliphatic cyclic polyolefin, norbornene-based thermoplastic transparent resin, A laminate of two or more types of flexible films, or a glass plate such as soda glass, alkali-free glass, borosilicate glass, or quartz glass. The thickness of the first substrate Z1 and the second substrate Z2 is preferably about 20 to 500 μm. Further, in the case where there is a pen or a finger in contact with the surface, in order to improve transparency, scratch resistance, abrasion resistance, glare-freeness, etc., one side of the first substrate Z1 and the second substrate Z2 may be Hard coating processing on both sides.

Further, when the first substrate Z1 and the second substrate Z2 are formed of a material having flexibility, in order to impart rigidity to the first substrate Z1 and the second substrate Z2, adhesion may be performed on the first substrate Z1 and the second substrate Z2. Body or protector. The support and the protective body may, for example, be a glass plate and a resin material having a quasi-glass hardness, and the thickness of the support and the protective body is preferably 100 μm or more, and more preferably 0.2 mm to 2.0 mm.

Further, when the first substrate Z1 and the second substrate Z2 are formed, an undercoat layer may be provided in advance on the surface (one surface side; the surface side on which the first conductor layer 1 or the second conductor layer 2 is formed) to improve transparency. And the adhesion and the like, thereby constituting the first substrate Z1 and the second substrate Z2. The material of the undercoat layer may, for example, be a metal oxide such as cerium oxide, titanium oxide or tin oxide. The undercoat layer can be formed by forming a thin film layer made of the above-described metal oxide on the surfaces of the first substrate Z1 and the second substrate Z2 by a sputtering method, a resistance vapor deposition method, an electron beam evaporation method, or the like. Further, the undercoat layer may be formed by laminating two or more thin film layers having different refractive indices. In particular, when the undercoat layer having the refractive index matching function described in Japanese Laid-Open Patent Publication No. 2010-208169 or the like is provided, the portion having the transparent conductive film (electrode portions 11, 21) and the portion having no transparent conductive film are provided. The difference in the optical characteristics of the portion becomes small, so the definition (visibility) is further improved.

As shown in (a) of FIG. 2 and (b) of FIG. 2, the first electrode portion 11 and the second electrode portion 21 formed on one main surface of the first substrate Z1 and the second substrate Z2, respectively, are formed as separate The strip shape of the first electrode portion 11 and the second electrode portion 21 is not limited to the pattern shape of the present embodiment, and may be any shape as long as it can detect a contact point of a finger or the like. shape. For example, as shown in FIG. 4( a ) and FIG. 4( b ), the shape of the first electrode portion 11 and the second electrode portion 21 may be a structure in which a plurality of rhombic electrode bodies are connected in a straight line. . When such a configuration is employed, the connection directions of the rhombic electrode portions of the first electrode portion 11 and the second electrode portion 21 are perpendicular to each other, and the rhombic electrode portions of the upper and lower sides are not overlapped in plan view. In the case of the operational performance such as the resolution of the touch panel, a configuration in which the region where the first electrode portion 11 and the second electrode portion 21 are not present is reduced when the first conductor layer 1 and the second conductor layer 2 are overlapped is preferable. of. From this point of view, the pattern shape of the first electrode portion 11 and the second electrode portion 21 is preferably a structure in which a plurality of rhombic electrode bodies are connected in a straight line shape as compared with a rectangular structure. However, it is not limited to the configuration of the present embodiment, and an appropriate pattern shape can be selected.

The material of the first electrode portion 11 and the second electrode portion 21 may, for example, be indium tin oxide (ITO), indium oxide, antimony-doped tin oxide, fluorine-doped tin oxide, aluminum-doped zinc oxide, gallium-doped zinc oxide, or antimony-doped Transparent conductive materials such as zinc oxide, zinc oxide-tin oxide, indium oxide-tin oxide, zinc oxide-indium oxide-magnesia, zinc oxide, tin oxide film, or metals such as tin, copper, aluminum, nickel, and chromium The material or the metal oxide material may be a material formed by combining the two or more types described above. In addition, a simple metal element which is weak in acid or alkali can also be used as a conductive material.

Further, a composite material may be used as a material for forming the first electrode portion 11 and the second electrode portion 21 by using carbon nanotubes, carbon nanohorns, carbon nanowires, carbon nanofibers, graphite fibers, and the like. A very fine conductive fiber composed of a very fine conductive carbon fiber or a silver material is dispersed in a polymer material functioning as a binder. Here, as the polymer material, polyaniline, polypyrrole, and polyethylene can be used. Alkyne, polythiophene, polyparaphenylene acetylene, polyphenylene sulfide, polyparaphenylene, polyheteroethylene, PEDOT (poly(3,4-ethylenedioxythiophene)) Isometric polymer. In addition, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyether oxime (PES), polyetheretherketone (PEEK), polycarbonate (PC) can be used. Non-conductive polymers such as polypropylene (PP), polyamine (PA), acrylic acid, polyimide, epoxy resin, phenol resin, aliphatic cyclic polyolefin, norbornene-based thermoplastic transparent resin.

The method of forming the first electrode portion 11 and the second electrode portion 21 may, for example, be a PVD method such as a sputtering method, a vacuum deposition method, or an ion plating method, a CVD method, a coating method, a printing method, or the like. Further, when the thickness of the first electrode portion 11 and the second electrode portion 21 is, for example, an ITO film formed by a sputtering method, it is preferably 5 nm or more and 60 nm or less, and more preferably 40 nm or less from the viewpoint of sharpness. Further, when the film thickness is 5 nm or less, it is difficult to form a film continuously, and it is difficult to form a stable conductive layer.

A mask portion having a desired pattern shape is formed on the surface of the ITO film or the like formed on the first substrate Z1 and the second substrate Z2, and the exposed portion is removed by etching with an acid solution or the like, and then masked with an alkali solution or the like. The mold portion is dissolved, whereby the pattern of the first electrode portion 11 and the second electrode portion 21 can be formed.

The first lead wiring 12 electrically connected to the first electrode portion 11 and the second lead wiring 22 electrically connected to the second electrode portion 21 are used to detect the first electrode portion 11 and the second electrode portion 21 through the flexible wiring board 9. The touch signal is guided to a touch position determining circuit (not shown) that is externally configured. As shown in the plan view of Fig. 2(a), one end 121 of each of the first lead wires 12 is independently connected to the end of each of the first electrode portions 11, and the other end 122 of each of the first lead wires 12 is disposed at the first end. One side edge portion of the substrate Z1. A region portion 123 between the one end 121 and the other end 122 of each of the first lead wires 12 is formed to be circumferentially formed along the circumference of the first substrate Z1. The other end 122 of each of the first lead wires 12 disposed on one side edge portion of the first substrate Z1 is bundled at a predetermined interval to form a first wiring collecting portion 12a, and a flexible wiring to be described later. The first terminal portion 91a of the terminal 91 of the board 9 is connected to the first wiring collecting portion 12a. Further, each of the first lead wires 12 is formed to be parallel to each other at a predetermined interval.

Similarly, as shown in the plan view of FIG. 2( b ), one end 221 of each of the second lead wires 22 is independently connected to the end of each of the second electrode portions 21 , and the other end 222 of each of the second lead wires 22 is disposed. On one side edge portion of the second substrate Z2. A region portion 223 between the one end 221 and the other end 222 of each of the second lead wires 22 is formed to be circumferentially formed along the circumference of the second substrate Z2. The other end 222 of each of the second lead wires 22 disposed on one side edge portion of the second substrate Z2 is bundled at a predetermined interval to form a second wire collecting portion 22a, and the terminal 91 of the flexible wiring board 9 to be described later The two terminal portions 91b are connected to the second wiring collecting portion 22a. Further, each of the second lead wires 22 is formed to be parallel to each other at a predetermined interval.

When the touch panel 10 is formed by overlapping the first substrate Z1 on which the first conductor layer 11 is formed and the second substrate Z2 on which the second conductor layer 21 is formed, as shown in an enlarged view of a main portion of FIG. 5, In the plan view of the touch panel, the first wiring collecting portion 12a and the second wiring collecting portion 22a are disposed adjacent to each other at the same side edge portion T of the touch panel.

The method of forming the first lead wiring 12 and the second lead wiring 22 is exemplified by the following method: (A) Conductive printing of conductive particles containing a metal such as silver on the first substrate Z1 and the second substrate Z2, respectively (B) a method of laminating a metal foil such as copper on the first substrate Z1 and the second substrate Z2, forming a resist pattern on the metal foil, and etching the metal foil (refer to Japanese Patent Laid-Open Publication) 2008-32884, etc.). Further, the first extraction wiring 12 and the second extraction wiring 22 may be formed of the same material (indium tin oxide (ITO), conductive polymer, or the like) as the first electrode portion 11 and the second electrode portion 21 described above. When the first extraction wiring 12 and the second extraction wiring 22 are formed of the same material as the first electrode portion 11 and the second electrode portion 21, the pattern formation method of the first electrode portion 11 and the second electrode portion 21 can be employed. Method, the formation method of the (B), and removing unnecessary regions by irradiation of laser light Domain methods, etc.

The conductive particles in the formation method of the above (A) include fine particles containing silver as a main component. Further, as the conductive particles in the forming method of the above (A), for example, an alloy of gold, silver, copper, gold, and silver, an alloy of gold and copper, an alloy of silver and copper, an alloy of gold and silver, and copper may be used. Any of the particles as a main component. Further, the conductive particles in the formation method of the above (A) may be an indium zinc oxide obtained by mixing zinc oxide with indium tin oxide (ITO) or indium oxide. Or a fine particle containing a conductive oxide (ITSO) obtained by mixing cerium oxide into indium oxide as a main component.

Further, the method of forming the first lead wiring 12 and the second lead wiring 22 is not limited to the method of forming the above (A) and (B), and a printing method such as gravure printing other than the above (A) may be used. Photolithography other than (B), inkjet printing, and the like.

The flexible wiring board 9 is a film-like, flexible, and freely bendable wiring board electrically connected to the first conductor layer 1 and the second conductor layer 2 of the touch panel for using the first electrode portion 11 and the second electrode portion The touch signal detected by the electrode unit 21 is guided to a touch position determining circuit (not shown) disposed outside. As shown in FIG. 6, the flexible wiring board 9 of the present embodiment includes a terminal 91 electrically connected to the first wiring collecting portion 12a and the second wiring collecting portion 22a, and an elongated flexible wiring main body 92 from the touch panel. The side direction is externally led out.

The terminal 91 includes a first terminal portion 91a that is integrally connected to the flexible wiring main body 92 at one end of the flexible wiring main body 92, and is disposed to overlap the first wiring collecting portion 12a, and a second terminal portion 91b and the first terminal portion. The side connection of 91a protrudes outward from the side edge of the flexible wiring main body 92, and is disposed to overlap the second wiring collecting portion 22a. A slit 91c having a predetermined shape is formed at a tip end portion of the first terminal portion 91a near the boundary between the first terminal portion 91a and the second terminal portion 91b, and the first substrate Z1 is sandwiched between the slit 91c and is first The terminal portion 91a and the first wiring collecting portion 12a are overlapped, and the second terminal portion 91b is attached to the second wiring collecting portion 22a. In addition, the first terminal portion 91a and the second terminal portion 91b pass conductive The anisotropic conductive adhesive obtained by uniformly dispersing the particles in a highly insulating adhesive is connected to the first wiring collecting portion 12a and the second wiring collecting portion 22a. The anisotropic conductive adhesive may be, for example, a liquid or a sheet structure.

Here, as shown in FIG. 6 and an enlarged plan view showing a state in which the terminal 91 of the flexible wiring board 9 is provided on the touch panel, the front end edge of the first terminal portion 91a is provided with the above-described The side edges T of one side edge portion of the touch panel of one terminal portion 91a are substantially parallel. Further, the front end portion 93a of the lead wire 93 of the first terminal portion 91a is substantially perpendicular to the side edge T of one side edge portion of the touch panel on which the first wiring collecting portion 12a is formed, and the first terminal portion 91a is disposed with each The other ends 122 of the first lead wires 12 respectively correspond to the front end portions 93a of the plurality of wires 93 overlapping the other ends 122. Further, since the other end 122 of each of the first lead wires 12 overlaps with the tip end portion 93a of each of the wires 93 of the corresponding first terminal portion 91a, the other end 122 of each of the first lead wires 12 and the corresponding first terminal portion 91a are provided. The leading ends of the respective wires 93 are parallel.

In addition, the shape of the second terminal portion 91b will be described, and as shown in FIG. 6 and the enlarged view of the main portion of FIG. 7 in which the terminal 91 of the flexible wiring board 9 is provided on the touch panel, the second terminal portion is shown. 91b includes a planar side edge 94 and an angled side edge 95 opposite the planar side edge 94. The side edge 94 which is formed in a plane is connected to the side edge 92a of the flexible wiring main body 92, and is substantially flush with the side edge T of one side edge portion of the touch panel on which the second wiring collecting portion 22a is disposed. The inclined side edge 95 is disposed on the inner side of the touch panel 10 to narrow the interval between the protruding direction toward the second terminal portion 91b (the right direction in FIGS. 6 and 7) and the side edge 94 of the plane. The way to tilt.

Further, the second terminal portion 91b is formed with a plurality of wires 96 having a front end portion 96a corresponding to the other end 222 of each of the second lead wires 22 and overlapping the other end 222. The front end portion 96a of the lead wire 96 of the second terminal portion 91b is inclined with respect to the side edge T of one side edge portion of the touch panel on which the second wiring collecting portion 22a is formed. In addition, the other end 222 of each of the second lead wires 22 is composed of Since it overlaps with the front end portion 96a of each of the lead wires 96 of the corresponding second terminal portion 91b, it is parallel to the distal end portion 96a of each of the lead wires 96 of the corresponding second terminal portion 91b. Further, in the present embodiment, each of the other end 222 of each of the second lead wires 22 and the tip end portion 96a of each of the wires 96 of the second terminal portion 91b corresponding to the other end 222 of each of the second lead wires 22 In combination, the respective combinations are disposed along the extending direction of the second terminal portion 91b (the right direction in FIGS. 6 and 7), and are substantially perpendicular to the inclined side edge 95 of the second terminal portion 91b. When each combination is perpendicular to the inclined side edge 95 of the second terminal portion 91b, the width for overlapping the other end 222 of each of the second lead wires 22 with the tip end portion 96a of each of the lead wires 96 can be maximized. Preferred.

Further, the inclined side edge 95 is inclined in such a manner as to become narrower from the extending direction of the second terminal portion 91b (the right direction in FIGS. 6 and 7) and the side edge 94 of the plane which is inclined, the inclined side edge The inclination angle of the side edge T of one side edge portion of the touch panel of 95 can be appropriately set. For example, it is preferable that the wiring pitch of the wire 96 of the second terminal portion 91b and the front end portion 96a of each of the wires 96 are used. The relationship of the pitch determines the inclination angle of the inclined side edge 95 with respect to the side edge T of one side edge portion of the touch panel. That is, as shown in the schematic view of Fig. 8, when the wiring pitch of the wires 96 of the second terminal portion 91b is A μm and the pitch of the tip end portions 96a of the respective wires 96 is Bmm, it is preferable to make the inclined side edges 95. The inclination angle θ of the inclined side edge 95 is set such that the inclination angle (corresponding to θ in FIG. 8) satisfies the relationship of sin(θ)=A/B. Further, the wiring pitch of the wires 96 of the second terminal portion 91b is preferably set to, for example, a range of 80 μm to 300 μm. Further, the pitch of the tip end portion 96a of each of the wires 96 is preferably set to, for example, a range of 0.3 mm to 2.0 mm.

In the touch panel device 100 having the above configuration, the touch position detecting method is the same as that of the conventional capacitive touch panel device, and if a finger or the like touches any position on the surface side (exposed surface side) of the first substrate Z1, The first electrode portion 11 and the second electrode portion 21 are grounded by the human body capacitance at the contact position, and the coordinates of the contact position are calculated by detecting the current values flowing through the first electrode portion 11 and the second electrode portion 21.

The terminal 91 of the flexible wiring board 9 connected to the touch panel 10 of the touch panel device 100 of the present invention has a second terminal portion 91b, and the second terminal portion 91b includes a side edge 94 formed in a plane, and flexible wiring The side edge 92a of the main body 92 is connected to be in a plane with the side edge T of one side edge portion of the touch panel 10 on which the second wiring collecting portion 22a is disposed; and the inclined side edge 95 is opposed to the side edge 94 which is formed in a plane. It is inclined so as to become narrower as the distance from the extending direction toward the second terminal portion 91b and the side edge 94 of the plane becomes narrow. With this configuration, the insertion length of the second terminal portion 91b into the touch panel can be increased without enlarging the peripheral portion region where the lead wires 12 and 22 are disposed in the touch panel. In other words, the bonding area between the second terminal portion 91b and the touch panel 10 can be increased, and as a result, the bonding state of the second terminal portion 91b and the touch panel 10 can be made good, and even if the flexible wiring board 9 is bent, the first The joint portion of the two terminal portions 91b and the touch panel 10 generates a force for peeling off the terminal 91, and the terminal 91 can be effectively prevented from being peeled off.

Further, as a result of increasing the insertion length of the second terminal portion 91b into the touch panel, for example, even if the joint area of the second terminal portion 91b and the touch panel 10 is the same as the existing joint area, it is used. In the case of the conventional flexible wiring board, the joint portion of the second terminal portion 91b and the touch panel 10 may be further disposed on the inner side of the touch panel 10. In other words, the distance between the joint portion of the second terminal 91b and the touch panel 10 and the portion where the flexible wiring board 9 is bent can be increased. Thereby, it is possible to reduce the influence of the bending of the flexible wiring board 9 on the joint portion of the second terminal portion 91b and the touch panel 10 (the influence of the force for peeling off the terminal 91), and it is possible to effectively prevent the terminal 91 from being peeled off.

Further, as shown in FIG. 6 and FIG. 7, the lead wire 96 provided in the second terminal portion 91b (projecting portion) for overlapping with the other end 222 of the second lead-out wiring 22 of the second wiring collecting portion 22a is Since the intermediate portion 96c is disposed inside the second terminal portion 91b, the triangular protruding portion of the conventional flexible wiring board 9 can be formed, and the flexible wiring board 9 can be made thinner, and the intermediate portion 96c can be disposed. The front end portion 96a of the wire 96 and the main body portion disposed on the flexible wiring main body 92 Between 96b. Further, since the triangular protruding portion can be formed without being formed, the influence of the bending when the flexible wiring board 9 is bent is not transmitted to the second terminal portion 91b (projecting portion) by the triangular protruding portion, so that it can be further The second terminal portion 91b is effectively prevented from being peeled off from the touch panel.

Further, by being able to form the protruding portion without the triangular shape, it is possible to provide a strip-shaped adhesive that is adhered across the surface and the back surface of the touch panel on both sides of the root portion of the flexible wiring main body 92 drawn from the side of the touch panel. Reinforce the belt. Since the reinforcing tape is disposed at a position near the base of the second terminal portion 91b that protrudes from the side of the first terminal portion 91a, it is possible to effectively suppress the floating of the terminal 91 with respect to the touch panel, thereby effectively preventing the terminal 91 peeled off from the touch panel.

Further, in the present embodiment, the other ends 222 of the respective second lead wires 22 are arranged at predetermined intervals, and a plurality of wires 96 are formed in the second terminal portion 91b, and the plurality of wires 96 have a tip end portion 96a and a front end. The portion 96a corresponds to the other end 222 of each of the second lead wires 22 and overlaps the other end 222, and the other end 222 of the second lead wire 22 and the tip end portion of the wire 96 overlapping the other end 222 of the second lead wire 22 are formed. 96a is inclined with respect to the side edge T of one side edge portion of the touch panel 10 on which the second wiring collecting portion 22a is formed. In the case of such a configuration, for example, the front end portion 96a of the wire 96 corresponding to the other end 222 of the second lead wire 22 and the other end 222 of each of the second lead wires 22 respectively overlapping the other end 222 is When the side edge T of one side edge portion of the touch panel in which the second wiring collecting portion 22a is formed is formed to be substantially perpendicular to the side edge T of the touch panel, the overlapping size can be lengthened, and the other end 222 of the second lead wiring 22 can be The joint region of the tip end portion 96a of the wire 96 corresponding to the other end 222 is widened, so that the joining of the both can be further ensured. Further, in the present invention, the other end 222 of the second lead-out wiring 22 and the front end portion 96a of the wire 96 respectively corresponding to the other end 222 of each of the second lead wires 22 and overlapping the other end 222 are not removed. This aspect may be adopted in such a manner that the side edge T of one side edge portion of the touch panel 10 in which the second wiring collecting portion 22a is formed is substantially perpendicular.

One embodiment of the present invention has been described above, but the specific mode of the present invention is not limited to the embodiment. In the embodiment, the terminal 91 includes: a first terminal portion 91a integrally connected to the flexible wiring main body 92 at one end of the flexible wiring main body 92; and a second terminal portion 91b, and the first One side of the terminal portion 91a is connected to extend outward from the side edge of the flexible wiring main body 92. However, as shown in FIG. 9, for example, the terminal portion 91a may protrude further outward than the side edge 92a of the flexible wiring main body 92. The second terminal portion 91b is provided on both sides of the first terminal portion 91a.

Further, in the present embodiment, the capacitive touch panel device 100 is configured by bonding the first conductor layer 1 and the second conductor layer 2 with an adhesive layer. However, the resistive touch panel may be configured as follows. In other words, the first conductor layer 1 and the second conductor are disposed to face each other with a predetermined interval therebetween by a spacer, thereby forming a resistive touch panel.

The method for detecting the touch position of the resistive touch panel is the same as that of the conventional resistive touch panel, and the first electrode portion 11 is pressed by pressing any position on the surface side of the first substrate Z1 with a finger or the like. The second electrode portion 21 is in contact, and the coordinates of the contact position are calculated by measuring the resistance values of the contact points in the lateral direction and the longitudinal direction.

10‧‧‧Touch panel

92‧‧‧Flexible wiring body

93‧‧‧Wire

94‧‧‧lateral edge

95‧‧‧ sloping side edges

96‧‧‧ front end

122‧‧‧The other end of the first lead-out wiring

222‧‧‧The other end of the second lead-out wiring

91a‧‧‧First terminal

91b‧‧‧second terminal

92a‧‧‧lateral edge

93a‧‧‧ front end

96a‧‧‧ front end

Claims (3)

A touch panel device comprising: a touch panel having: a first conductor layer disposed on one side of the dielectric layer; and a second conductor layer disposed on the other side of the dielectric layer; and a flexible wiring board Connecting the first conductor layer and the second conductor layer; the first conductor layer is provided with: a plurality of first electrode portions arranged at intervals; and a plurality of first lead wires, one end and each One electrode portion is independently connected; the second conductor layer includes: a plurality of second electrode portions arranged at intervals; and a plurality of second lead wires, one end of which is independently connected to each of the second electrode portions; the first wiring The collecting portion and the second wiring collecting portion are disposed adjacent to each other at one side edge portion of the touch panel, and the other ends of the plurality of first lead wires are bundled to obtain the first wiring collecting portion, the plurality of The other end of the second lead-out wiring is bundled to obtain the second wiring collecting portion; the flexible wiring board includes: a terminal, and the first wiring collecting portion and the second wiring a portion of the electrical connection; and a flexible wiring body that is externally drawn from a side of the touch panel; the terminal includes: a first terminal portion integrally connected to the flexible wiring body at one end of the flexible wiring body Arranging so as to overlap with the first wiring collecting portion; and the second terminal portion is connected to the side of the first terminal portion and protrudes outward from the side edge of the flexible wiring main body to The second terminal assembly portion is disposed to overlap with each other; the second terminal portion includes a side edge that is formed in a plane, and is connected to a side edge of the flexible wiring main body, and is configured to be in contact with the second wiring collecting portion a side edge of one side edge portion of the control panel is substantially in a plane; and an inclined side edge is disposed opposite to the side edge of the flat surface to be in a plane with the protruding direction toward the second terminal portion The side edges are inclined in such a manner that the interval is narrowed. The touch panel device according to claim 1, wherein the other ends of the second lead wires are respectively arranged at a predetermined interval; and the plurality of wires are formed in the second terminal portion, the plurality of wires having a front end portion overlapping the other end of each of the second lead wires, and a tip end portion of the second lead wire and a front end portion of the lead wire with respect to the second wiring collecting portion The side edges of one side edge portion of the touch panel are inclined. The touch panel device according to claim 2, wherein each combination of the other end of each of the second lead wires and the tip end portion of each of the wires corresponding to the other end of each of the second lead wires The second terminal portion is disposed in an extending direction and is formed to be substantially perpendicular to the inclined side edge of the second terminal portion.