JP6134965B2 - Touch panel device - Google Patents

Description

  The present invention relates to a touch panel device.

  Various configurations of a touch panel device for detecting an input position have been conventionally studied. As an example, a capacitive touch panel device is known. For example, the touch panel devices disclosed in Patent Document 1 and Patent Document 2 each include a touch panel configured with a dielectric layer interposed between a pair of substrates each including a plurality of conductors each having a predetermined pattern shape. doing. Further, in the touch panel, a lead-out wiring connected to one end is formed on each of the end portions of the plurality of conductors formed on each substrate, and is shown in the touch panel exploded perspective view of FIG. As described above, the other ends 101 and 102 of the respective lead wires are arranged so as to be gathered together at predetermined positions on the side edge portions 103 and 104 of the respective substrates. The other ends 101 and 102 of each lead-out wiring are perpendicular to the side edge 105 of the touch panel that is collected and arranged as a whole, as shown in the enlarged plan view of the main part of the touch panel in FIG. It is formed as follows. Such a touch panel device guides a touch signal to an external touch position determination circuit by electrically connecting the terminals of the flexible wiring board to the other ends 101 and 102 of the lead wires arranged together. The touch position can be detected.

  In such a touch panel device, in order to set a large ratio of the touch area to the entire touch panel, it is desired that the peripheral area of the touch panel in which the lead-out wiring is arranged be made as narrow as possible (narrow frame). In order to realize such a demand, it is necessary to reduce the connection area (overlapping area) between the terminal of the flexible wiring board and the other end of each lead-out wiring, and accordingly, the flexible wiring arranged at the side edge of the touch panel The board terminals also need to be miniaturized. In addition, slimming of the main body portion of the flexible wiring board (portion pulled out to the side of the touch panel; flexible wiring main body) is also desired.

  Therefore, in the past, in order to reduce the frame length of the touch panel by minimizing the insertion length of the terminal connected at one end of the flexible wiring body to the touch panel, the flexible wiring body is also narrowed. 11, a terminal 112 connected at one end of a flexible wiring main body 111 formed in a narrow width is formed to have a shape protruding to the side of the main body 111. The terminal 112 is formed so that the front end edge thereof is parallel to the side edge of the side edge portion of the touch panel to be attached. Further, in the vicinity of the terminals of the flexible wiring board 110, when the flexible wiring board 110 is installed on the touch panel 100 as shown in FIG. 13, a substantially triangular protruding portion 113 (one point in the figure) protrudes outside the touch panel 100. A portion surrounded by a chain line) is formed, and the conductor wire 115 led to the protruding portion 112a of the terminal 112 is arranged in the protruding portion 113.

JP2003-173238A (FIGS. 1 and 5) International Publication Number WO2011 / 111748

  The touch panel device described above is used with the touch panel mounted on the surface of a liquid crystal display device, a CRT, or the like. At that time, the flexible wiring board is bent and connected to the touch position determination circuit. As the flexible wiring board is bent, a force that causes the terminal to peel off occurs at the connection point between the terminal of the flexible wiring board and the touch panel, and the terminal of the flexible wiring board fixed on the lead-out wiring easily peels off. was there. In such a case, it becomes difficult to maintain a stable conduction state between the flexible wiring board and the lead-out wiring, and it becomes difficult to detect the touch position.

  In addition, a substantially triangular protruding part that protrudes outside the touch panel is formed in the vicinity of the terminal of the flexible wiring board, so that it is not compact, and the touch panel device is mounted on the surface of a liquid crystal display device or CRT. In this case, there is a problem that the protruding portion becomes an obstacle to restrict the product design or to reduce the workability of the mounting work.

  The present invention has been made to solve such a problem, and it is an object of the present invention to provide a touch panel device in which a flexible wiring board fixed on a lead-out wiring is difficult to peel off and the compactness can be improved. .

The above object of the present invention is to provide a touch panel having a first conductor layer disposed on one side of a dielectric layer, a second conductor layer disposed on the other side of the dielectric layer, and the first A touch panel device including a first conductive layer and a flexible wiring board connected to the second conductive layer, wherein the first conductive layer includes a plurality of first electrode portions arranged at intervals, and A plurality of first lead wires individually connected at one end to each first electrode portion, and the second conductor layer includes a plurality of second electrode portions disposed at intervals, and the second electrode layers. A plurality of second lead wires individually connected at one end to the electrode portion, and in plan view, the other ends of the plurality of first lead wires are integrated together on one side edge of the touch panel. First wiring integrated portion and the other ends of the plurality of second lead wirings The second wiring integrated part integrated in a lump is disposed adjacent to each other, and the flexible wiring board has terminals electrically connected to the first wiring integrated part and the second wiring integrated part A flexible wiring body that is pulled out from the side of the touch panel, and the terminal is integrally connected to the flexible wiring body at one end of the flexible wiring body, and is connected to the first wiring integrated portion. A first terminal portion arranged in an overlapping manner, and connected to the side of the first terminal portion and projecting outward from a side edge of the flexible wiring body, and is arranged to overlap the second wiring integrated portion. A second terminal portion, and the second terminal portion is connected to a side edge of the flexible wiring body, and a side edge of one side edge portion of the touch panel on which the second wiring integrated portion is disposed. A flat side edge that is substantially flush with the flat side edge, and an inclined side edge that is disposed so as to be opposed to the flat side edge and that is inclined so that an interval between the flat side edge becomes narrower toward a protruding direction of the second terminal portion. The other end of each second lead-out wiring is arranged at a predetermined interval, and the second terminal portion corresponds to the other end of each second lead-out wiring. A plurality of conductor lines having a tip portion superimposed on the other end, and the second wiring integrated portion is formed at the other end of the second lead wiring and the tip portion of the conductor line. This is achieved by a touch panel device configured to be inclined with respect to a side edge at one side edge of the touch panel.

  Moreover, in each combination with the other end of each said 2nd lead-out wiring and the front-end | tip part of each said conductor wire corresponding to the said each other end, each said combination is along the extending direction of the said 2nd terminal part. It is preferable that the second terminal portion is formed so as to be substantially perpendicular to the inclined side edge.

  ADVANTAGE OF THE INVENTION According to this invention, the flexible wiring board fixed on a drawer | drawing-out wiring is hard to peel, and the touch panel apparatus which can improve compactness can be provided.

1 is a schematic cross-sectional schematic diagram of a capacitive touch panel device according to an embodiment of the present invention. (A) is a top view which shows a part of electrostatic capacitance type touch panel shown in FIG. 1, (b) is a top view which shows another part of the electrostatic capacitance type touch panel shown in FIG. . (A) (b) is a schematic cross-sectional schematic diagram which shows the modification of FIG. (A) is a top view which shows the modification of Fig.2 (a), (b) is a top view which shows the modification of FIG.2 (b). It is a principal part enlarged plan view of a touch panel. It is a top view which shows the flexible wiring board which the touchscreen apparatus which concerns on this invention has. It is a principal part enlarged plan view which shows the state which installed the terminal of the flexible wiring board in the touch panel. It is a schematic diagram for demonstrating the example of inclination-angle calculation of the inclination side edge in a 2nd terminal part. It is a top view which shows the modification of the flexible wiring board which the touchscreen apparatus which concerns on this invention has. It is a disassembled perspective view explaining the conventional touch panel structure. It is a principal part enlarged plan view of the conventional touch panel. It is a top view of the conventional flexible wiring board connected to a touch panel. It is a principal part enlarged plan view which shows the state which installed the flexible wiring board in the touchscreen.

  Hereinafter, actual forms of the present invention will be described with reference to the accompanying drawings. In each drawing, each component is partially enlarged or reduced rather than an actual size ratio in order to facilitate understanding of the configuration.

  FIG. 1 is a schematic cross-sectional schematic diagram of 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 that is used by being attached to a display device such as a personal computer, a bank terminal (cash dispenser), a ticket machine, an OA device, an electronic notebook, a PDA, or a mobile phone. A touch panel 10 having a first conductor layer 1 disposed on one side of the dielectric layer 3 and a second conductor layer 2 disposed on the other side of the dielectric layer 3, and a first conductor And a flexible wiring board 9 connected to the layer 1 and the second conductor layer 2.

  In the configuration of the touch panel device 100 according to the present embodiment, the first conductor layer 1 is formed on one surface side of the first substrate Z1, as shown in the cross-sectional view of FIG. 1 and the plan view of FIG. A plurality of strip-shaped first electrode portions 11 that are arranged in parallel with each other and a plurality of first lead wirings 12 whose one ends are electrically connected to the first electrode portions 11 individually. Further, as shown in the cross-sectional view of FIG. 1 and the plan view of FIG. 2B, a plurality of second conductor layers 2 are arranged in parallel at a predetermined interval on one surface side of the second substrate Z2. And a plurality of second lead wires 22 having one end individually electrically connected to each second electrode portion.

  The first conductor layer 1 and the second conductor layer 2 are disposed and stacked such that the longitudinal directions of the first electrode portion 11 and the second electrode portion 21 intersect in plan view (this book) In the embodiment, the first electrode portion 11 and the second electrode portion 21 are stacked such that the longitudinal directions thereof are orthogonal to each other in plan view. Further, as shown in FIG. 1, the first conductor layer 1 and the second conductor layer 2 are the second electrode portion 21 and the other surface side of the first substrate Z1 (the surface on which the first electrode portion 11 is not formed). Are attached via the adhesive layer 4 so that the side faces are spaced apart from each other. Here, in the touch panel device 100 shown in FIG. 1, the laminated structure of the adhesive layer 4 and the first substrate Z <b> 1 is configured to form the dielectric layer 3. The pressure-sensitive adhesive layer 4 can be made of a general transparent adhesive such as epoxy or acrylic, and may include a core material made of a polyester resin transparent film. Moreover, the adhesive layer 4 may be formed by superimposing a plurality of sheet-like adhesive materials, and may be formed by superposing a plurality of types of sheet-like adhesive materials. The thickness of the pressure-sensitive adhesive layer 4 is not particularly specified, but is practically preferably 20 μm to 500 μm.

  In the configuration of the touch panel device 100 in FIG. 1, the first conductor layer 1 and the second conductor layer 2 are formed on the other electrode side of the second electrode portion 21 and the first substrate Z1 (the first electrode portion 11 is formed). Are not attached to such a form. For example, as shown in FIG. 3A, the first electrode portion 11 and the second electrode are attached. The portions 21 may be attached via the adhesive layer 4a so as to face each other. In the case of such a configuration, the adhesive layer 4 a constitutes the dielectric layer 3. 3B, the first conductor layer 1 may be formed on one side of the transparent substrate Z and the second conductor layer 2 may be formed on the other side. Good. In the case of such a configuration, the transparent substrate Z constitutes the dielectric layer 3.

  When the touch panel device 100 is attached to a display device such as a bank terminal, a ticket machine, or a personal computer, for example, as shown in FIG. 1, one surface side of the first substrate Z1 (the surface on which the first electrode portion 11 is formed). And a display device through the transparent adhesive layer 7 so that the exposed surface of the film body 5 becomes a touch surface. 8 is attached.

  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), polyimide (PI), polyethylene naphthalate (PEN). ), Polyethersulfone (PES), polyetheretherketone (PEEK), polycarbonate (PC), polypropylene (PP), polyamide (PA), polyacryl (PAC), acrylic, amorphous polyolefin resin, cyclic polyolefin Flexible film such as thermoplastic resin, aliphatic cyclic polyolefin, norbornene-based thermoplastic transparent resin, or a laminate of two or more thereof, or glass plates such as soda glass, alkali-free glass, borosilicate glass, quartz glass, etc. Can be mentioned. The thickness of the first substrate Z1 and the second substrate Z2 is preferably about 20 to 500 μm. In addition, on one side or both sides of the first substrate Z1 and the second substrate Z2, when a pen or a finger may come into contact with the surface, the transparency, scratch resistance, wear resistance, non-glare property, etc. are improved. Therefore, you may give a hard coat process.

  Moreover, when forming the 1st board | substrate Z1 and the 2nd board | substrate Z2 from the material which has flexibility, in order to provide rigidity to the said 1st board | substrate Z1 and the 2nd board | substrate Z2, a support body and a cover body are stuck. Also good. Examples of the support and cover include a glass plate and a resin material having a hardness similar to that of glass, and the thickness is preferably 100 μm or more, and is 0.2 mm to 2.0 mm. More preferred.

  Moreover, when forming the 1st board | substrate Z1 and the 2nd board | substrate Z2, transparency, adhesiveness, etc. on the surface (one surface side; the surface side in which the 1st conductor layer 1 and the 2nd conductor layer 2 are formed) previously. The first substrate Z1 and the second substrate Z2 may be configured so as to provide an undercoat layer for improving the above. Examples of the material for the undercoat layer include metal oxides such as silicon oxide, titanium oxide, and tin oxide. An undercoat layer is formed by forming a thin film layer made of such a metal oxide on the surfaces of the first substrate Z1 and the second substrate Z2 by sputtering, resistance vapor deposition, or electron beam vapor deposition. be able to. The undercoat layer can also be constituted by laminating two or more thin film layers having different optical refractive indexes. In particular, when an undercoat layer having an index matching function as described in Japanese Patent Application Laid-Open No. 2010-208169 is used, a difference in optical characteristics between a portion with the transparent conductive film (electrode portions 11 and 21) and a portion without the transparent conductive film is small. Therefore, the visibility is further improved.

  As shown in FIGS. 2A and 2B, 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, have a predetermined interval. Although it is formed in a strip shape so as to extend in parallel with each other, the pattern shape of the first electrode portion 11 and the second electrode portion 21 is not limited to that of this embodiment, and a contact point such as a finger can be detected. As long as it is, it can be made into an arbitrary shape. For example, as the shapes of the first electrode portion 11 and the second electrode portion 21, as shown in FIGS. 4A and 4B, a plurality of rhombus-shaped electrode bodies can be linearly connected. When such a configuration is adopted, the connecting directions of the rhombic electrode portions in the first electrode portion 11 and the second electrode portion 21 are orthogonal to each other, and the upper and lower rhombic electrode portions do not overlap in plan view. Deploy. Regarding the operation performance such as the resolution of the touch panel, when the first conductor layer 1 and the second conductor layer 2 are overlaid, the configuration in which the area where the first electrode portion 11 and the second electrode portion 21 do not exist is reduced. It is better to adopt From such a viewpoint, the pattern shape of the first electrode portion 11 and the second electrode portion 21 is preferably a configuration in which a plurality of rhomboidal electrode bodies are connected in a straight line rather than a rectangular configuration. However, the present invention is not limited to this embodiment, and an appropriate pattern shape can be selected.

  As materials for the first electrode portion 11 and the second electrode portion 21, indium tin oxide (ITO), indium oxide, antimony-added tin oxide, fluorine-added tin oxide, aluminum-added zinc oxide, gallium-added zinc oxide, silicon-added oxide Transparent conductive materials such as zinc, zinc oxide-tin oxide, indium oxide-tin oxide, zinc oxide-indium oxide-magnesium oxide, zinc oxide, tin oxide film, or tin, copper, aluminum, nickel, chromium Examples thereof include metal materials such as metal oxide materials, and may be formed by combining two or more of these materials. In addition, a simple metal weak against acid or alkali can be used as a conductive material.

  In addition, a composite material in which ultrafine conductive carbon fibers such as carbon nanotubes, carbon nanohorns, carbon nanowires, carbon nanofibers, and graphite fibrils, or ultrafine conductive fibers made of a silver material are dispersed in a polymer material that functions as a binder is used for the first electrode portion 11. It can also be used as a material for the second electrode portion 21. Here, a conductive polymer such as polyaniline, polypyrrole, polyacetylene, polythiophene, polyphenylene vinylene, polyphenylene sulfide, poly p-phenylene, polyheterocyclic vinylene, PEDOT: poly (3,4-ethylenedioxythiophene) should be adopted as the polymer material. Can do. In addition, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethersulfone (PES), polyetheretherketone (PEEK), polycarbonate (PC), polypropylene (PP), polyamide (PA), acrylic, polyimide, Non-conductive polymers such as epoxy resins, phenol resins, aliphatic cyclic polyolefins, norbornene-based thermoplastic transparent resins can be employed.

  Examples of the method of forming the first electrode portion 11 and the second electrode portion 21 include PVD methods such as sputtering, vacuum deposition, and ion plating, CVD, coating, and printing. In addition, the thickness of the first electrode portion 11 and the second electrode portion 21 is preferably 5 nm or more, preferably 60 nm or less, for example, when the ITO film is formed by sputtering, and from the viewpoint of visibility. More preferably, it is 40 nm or less. Note that when the film thickness is 5 nm or less, it is difficult to form a continuous film, and it is difficult to form a stable conductive layer.

  The patterning of the first electrode portion 11 and the second electrode portion 21 is performed by forming a mask portion having a desired pattern shape on the surface of the ITO film or the like formed on the first substrate Z1 and the second substrate Z2. Is removed by etching with an acid solution or the like, and then the mask portion is dissolved with an alkali solution or the like.

  The first lead wire 12 electrically connected to the first electrode portion 11 and the second lead wire 22 electrically connected to the second electrode portion 21 were detected by the first electrode portion 11 and the second electrode portion 21. This is for guiding the touch signal to a touch position determining circuit (not shown) disposed outside via the flexible wiring board 9. As shown in the plan view of FIG. 2A, one end 121 of each first lead-out wiring 12 is individually connected to the end of each first electrode portion 11, and the other end 122 is connected to the first substrate Z1. It is arranged on one side edge. A region portion 123 between one end 121 and the other end 122 of each first lead wiring 12 is formed so as to be routed along the periphery of the first substrate Z1. The other ends 122 of the first lead wires 12 arranged on one side edge portion of the first substrate Z1 are integrated together at a predetermined interval, and the first ends of the terminals 91 of the flexible wiring board 9 to be described later. The first wiring integrated unit 12a connected to the terminal unit 91a is configured. The first lead wires 12 are formed so as to be parallel to each other at a predetermined interval.

  Similarly, as shown in the plan view of FIG. 2B, one end 221 of each second lead-out wiring 22 is individually connected to the end of each second electrode portion 21, and the other end 222 is connected to the second end. It arrange | positions at the one side edge part of the board | substrate Z2. A region portion 223 between one end 221 and the other end 222 of each second lead wiring 22 is formed by being routed along the periphery of the second substrate Z2. The other ends 222 of the second lead wires 22 arranged on one side edge of the second substrate Z2 are integrated together at a predetermined interval, and the second ends of the terminals 91 of the flexible wiring board 9 to be described later. The second wiring integrated unit 22a connected to the terminal unit 91b is configured. Each of the second lead wires 22 is formed to be parallel to each other with a predetermined interval.

  The first wiring integrated unit 12a and the second wiring integrated unit 22a overlap the first substrate Z1 on which the first conductive layer 11 is formed and the second substrate Z2 on which the second conductive layer 21 is formed. When the touch panel 10 is formed, as shown in the enlarged view of the main part in FIG. 5, the same one side edge T of the touch panel is disposed adjacent to each other in the plan view of the touch panel. It is configured.

  The first lead-out wiring 12 and the second lead-out wiring 22 are formed by (A) screen printing a conductive paste containing conductive particles of metal such as silver on the first and second substrates Z1 and Z2, B) A method of laminating a metal foil such as copper on the first and second substrates Z1 and Z2, forming a resist pattern on the metal foil, and etching the metal foil (see JP 2008-32884 A). It is done. The first and second lead wires 12 and 22 may be formed of the same material (indium tin oxide (ITO), conductive polymer, etc.) as the first electrode portion 11 and the second electrode portion 21 described above. . When the first and second lead wires 12 and 22 are formed of the same material as the first electrode portion 11 and the second electrode portion 21, the same method as the patterning method of the first electrode portion 11 and the second electrode portion 21, The formation method of (B), the method of removing an unnecessary area | region by laser irradiation, etc. are employable.

Examples of the conductive particles in the forming method (A) include fine particles containing silver as a main component. Further, for example, fine particles mainly containing any one of gold, silver, copper, an alloy of gold and silver, an alloy of gold and copper, an alloy of silver and copper, and an alloy of gold, silver, and copper may be used. In addition, indium tin oxide (ITO), conductive oxide in which zinc oxide is mixed with indium oxide (IZO [indium
zinc oxide]), or fine particles mainly composed of conductive oxide (ITSO) in which silicon oxide is mixed with indium oxide.

  Moreover, the formation method of the 1st and 2nd extraction wirings 12 and 22 is not limited to the formation method of said (A) (B), Printing methods other than said (A), such as gravure printing, and said ( Photolithography or ink jet other than B) may be used.

  The flexible wiring board 9 is a film-like, flexible, and freely bendable wiring board, and is electrically connected to the first conductor layer 1 and the second conductor layer 2 in the touch panel, and the first electrode This is for guiding the touch signal detected by the unit 11 and the second electrode unit 21 to a touch position determining circuit (not shown) arranged outside. As shown in FIG. 6, the flexible wiring board 9 in the present embodiment has a terminal 91 electrically connected to the first wiring integrated portion 12a and the second wiring integrated portion 22a, and a length that is pulled out from the side of the touch panel to the outside. And a flexible flexible wire main body 92.

  The terminal 91 is integrally connected to the flexible wiring main body 92 at one end of the flexible wiring main body 92, and is arranged to overlap the first wiring integrated portion 12a, and the first terminal portion 91a has a first terminal portion 91a. A second terminal portion 91b is provided that is connected to the side and projects outward from the side edge of the flexible wiring main body 92, and is disposed to overlap the second wiring integrated portion 22a. A slit 91c having a predetermined shape is formed at the tip of the first terminal portion 91a in the vicinity of the boundary with the second terminal portion 91b, and the first terminal Z1 is sandwiched between the slits 91c so as to sandwich the first terminal Z1. It is attached so that the portion 91a and the first wiring integrated portion 12a overlap, and the second terminal portion 91b and the second wiring integrated portion 22a overlap. The first terminal portion 91a and the second terminal portion 91b are respectively connected to the first wiring integrated portion 12a and the second terminal portion via an anisotropic conductive adhesive in which conductive particles are uniformly dispersed in a highly insulating adhesive. It is connected to the wiring integrated part 22a. The anisotropic conductive adhesive may be, for example, a liquid or a sheet.

  Here, as shown in FIG. 6 and an enlarged plan view of the main part of FIG. 7 showing a state in which the terminal 91 of the flexible wiring board 9 is installed on the touch panel, the leading edge of the first terminal portion 91a is the first terminal portion. It is comprised so that it may become substantially parallel with the side edge T in the one side edge part of the touchscreen in which 91a is installed. In addition, the first terminal portion 91a is provided with the leading end portions 93a of the plurality of conductor wires 93 that are superimposed on the other end 122 corresponding to the other end 122 of each first lead-out wiring 12. The tip end portion 93a of the conductor wire 93 in the terminal portion 91a is configured to be substantially perpendicular to the side edge T at one side edge portion of the touch panel on which the first wiring integrated portion 12a is formed. In addition, since the other end 122 of each 1st lead-out wiring 12 is overlapped with the front-end | tip part 93a of each conductor wire 93 in the corresponding 1st terminal part 91a, each conductor wire in the corresponding 1st terminal part 91a is overlapped. It is comprised so that it may become parallel to the front-end | tip part of 93.

  Further, the shape of the second terminal portion 91b will be described. As shown in FIG. 6 and an enlarged view of a main part of FIG. 7 showing a state in which the terminal 91 of the flexible wiring board 9 is installed on the touch panel, , And an inclined side edge 95 disposed to face the flush side edge 94. The flush side edge 94 is connected to the side edge 92a of the flexible wiring body 92, and is configured to be substantially flush with the side edge T at one side edge portion of the touch panel on which the second wiring integrated portion 22a is disposed. ing. The inclined side edge 95 is arranged on the inner side of the touch panel 10 so that the distance from the flush side edge 94 becomes narrower toward the protruding direction of the second terminal portion 91b (the right side direction in FIGS. 6 and 7). Inclined.

  The second terminal portion 91b is formed with a plurality of conductor lines 96 each having a distal end portion 96a that is superimposed on the other end 222 corresponding to the other end 222 of each second lead-out wiring 22. The distal end portion 96a of the conductor wire 96 in the second terminal portion 91b is configured to be inclined with respect to the side edge T in one side edge portion of the touch panel on which the second wiring integrated portion 22a is formed. In addition, since the other end 222 of each second lead-out wiring 22 is overlapped with the leading end portion 96a of each conductor line 96 in the corresponding second terminal portion 91b, each conductor wire in the corresponding second terminal portion 91b. It is comprised so that it may become parallel with the front-end | tip part 96a of 96. In the present embodiment, in each combination of the other end 222 of each second lead wire 22 and the tip end portion 96a of each conductor wire 96 in the second terminal portion 91b corresponding to each other end 222, Each combination is arranged along the protruding direction of the second terminal portion 91b (the right side direction in FIGS. 6 and 7) and is formed to be substantially perpendicular to the inclined side edge 95 in the second terminal portion 91b. Has been. When the second terminal portion 91 b is perpendicular to the inclined side edge 95, the width for overlapping and joining the other end 222 of each second lead wire 22 and the tip end portion 96 a of each conductor wire 96 is the largest. It is preferable because it can be widely used.

  In addition, the inclined side edge 95 formed so as to be inclined so that the distance from the flush side edge 94 becomes narrower toward the extending direction of the second terminal portion 91b (the right side direction in FIGS. 6 and 7). The inclination angle of the one side edge portion with respect to the side edge T can be appropriately set. For example, the wiring pitch of the conductor wire 96 in the second terminal portion 91b and the pitch of the tip end portion 96a of each conductor wire 96 are set. It is preferable to determine from the relationship. That is, as shown in the schematic diagram of FIG. 8, when the wiring pitch of the conductor wire 96 in the second terminal portion 91b is A μm and the pitch of the tip end portion 96a of each conductor wire 96 is Bmm, the inclined side edge 95 is inclined. It is preferable to set the inclination angle θ so that the angle (corresponding to θ in FIG. 8) satisfies the relational expression sin (θ) = A / B. In addition, it is preferable to set the wiring pitch of the conductor wire 96 in the 2nd terminal part 91b to the range of 80 micrometers-300 micrometers, for example. Moreover, it is preferable to set the pitch of the front-end | tip part 96a of each conductor wire 96 to the range of 0.3 mm-2.0 mm, for example.

  In the touch panel device 100 having the above configuration, the touch position detection method is the same as that of the conventional electrostatic capacitance type touch panel device, and an arbitrary position on the front surface side (exposed surface side) of the first substrate Z1 is set to a finger or the like The first electrode unit 11 and the second electrode unit 21 are grounded via the capacitance of the human body at the contact position, and the value of the current flowing through the first electrode unit 11 and the second electrode unit 21 is detected by touching with The coordinates of the contact position are calculated.

  In the touch panel device 100 according to the present invention, the terminal 91 of the flexible wiring board 9 connected to the touch panel 10 is connected to the side edge 92a of the flexible wiring body 92, and one of the touch panels 10 in which the second wiring integrated portion 22a is disposed. The surface side edge 94 that is substantially flush with the side edge T at the side edge portion is disposed opposite to the surface side edge 94, and the distance from the surface side edge 94 increases as it extends in the projecting direction of the second terminal portion 91b. The second terminal portion 91b is provided with an inclined side edge 95 that is inclined so as to be narrow. With such a configuration, the insertion length of the second terminal portion 91b with respect to the touch panel can be increased without enlarging the peripheral area where the lead-out wirings 12 and 22 are arranged on the touch panel. That is, the bonding area between the second terminal portion 91b and the touch panel 10 can be increased. As a result, the bonding state between the second terminal portion 91b and the touch panel 10 can be improved, and the flexible wiring board can be obtained. By bending 9, even if a force that peels the terminal 91 is generated in the joint portion between the second terminal portion 91 b and the touch panel 10, it is possible to effectively prevent the terminal 91 from peeling.

  In addition, as a result of being able to increase the insertion length of the second terminal portion 91b to the touch panel, for example, even when the bonding area between the second terminal portion 91b and the touch panel 10 is the same as the conventional area, The joint portion between the second terminal portion 91b and the touch panel 10 can be further arranged on the inner side of the touch panel 10 than when a conventional flexible wiring board is used. That is, the distance between the joint portion of the second terminal 91b and the touch panel 10 and the flexible wiring board 9 can be increased. Thereby, the influence (the influence of the force which peels the terminal 91) by the bending of the flexible wiring board 9 with respect to the junction part of the 2nd terminal part 91b and the touch panel 10 can be made small, and that the terminal 91 peels. It can be effectively prevented.

  Further, as shown in FIGS. 6 and 7, the conductor wire 96 provided on the second terminal portion 91b (the overhang portion) to overlap the other end 222 of the second lead wiring 22 in the second wiring integrated portion 22a, Since the intermediate portion 96c disposed between the distal end portion 96a and the main body portion 96b disposed on the flexible wiring main body 92 can be disposed inside the second terminal portion 91b, the conventional flexible wiring board 9 is provided. The triangular protruding portion thus formed can be formed, and the flexible wiring board 9 can be slimmed. In addition, since the triangular protruding portion is not formed, the influence of bending when the flexible wiring board 9 is bent propagates to the second terminal portion 91b (the protruding portion) via the triangular protruding portion. Therefore, it is possible to more effectively prevent the second terminal portion 91b from peeling from the touch panel.

  In addition, a tape-like pressure-sensitive adhesive that is adhered across the front and back surfaces of the touch panel on both sides of the base portion of the flexible wiring body 92 that is drawn out from the side of the touch panel by being configured so that no triangular protrusion is formed. It is possible to provide a reinforcing tape such as. Since the reinforcing tape is provided in the vicinity of the base portion of the second terminal portion 91b projecting from the side of the first terminal portion 91a, the terminal 91 is effectively prevented from being lifted with respect to the touch panel, and the terminal 91 is peeled off from the touch panel. This can be effectively prevented.

  In the present embodiment, the other end 222 of each second lead-out wiring 22 is arranged at a predetermined interval, and the second terminal portion 91b is connected to the other end 222 of each second lead-out wiring 22. Corresponding to each, a plurality of conductor lines 96 having tip portions 96 a superimposed on the other end 222 are formed. The other end 222 of the second lead-out wiring 22 and the other end 222 of the second lead-out wiring 22 are formed. The leading end portion 96a of the conductor wire 96 that is overlaid on the side is configured to be inclined with respect to the side edge T at one side edge portion of the touch panel 10 on which the second wiring integrated portion 22a is formed. In the case of adopting such a configuration, for example, the conductor line 96 superimposed on the other end 222 corresponding to each of the other end 222 of the second lead wiring 22 and the other end 222 of each second lead wiring 22. Compared to the case where the front end portion 96a is configured to be substantially perpendicular to the side edge T of one side edge portion of the touch panel on which the second wiring integrated portion 22a is formed, the overlapping dimension is set longer. It is possible to increase the bonding area between the other end 222 of the second lead-out wiring 22 and the tip end portion 96a of the conductor wire 96 corresponding to each of the other end 222. It can be certain. In the present invention, the other end 222 of the second lead-out wiring 22 and the tip end portion 96a of the conductor wire 96 superimposed on the other end 222 corresponding to the other end 222 of each second lead-out wiring 22, respectively. However, it does not exclude a configuration in which the second wiring integrated portion 22a is formed so as to be substantially perpendicular to the side edge T at one side edge portion of the touch panel 10 where the second wiring integrated portion 22a is formed. Also good.

  As mentioned above, although one Embodiment of this invention was described, the specific aspect of this invention is not limited to the said embodiment. In the above-described embodiment, the terminal 91 is connected to the first terminal portion 91a integrally connected to the flexible wiring main body 92 at one end of the flexible wiring main body 92 and one side of the first terminal portion 91a. The second terminal portion 91b extends outward from the side edge of the flexible wiring main body 92. For example, as shown in FIG. 9, the second terminal portion 91b extends outward from the side edge 92a of the flexible wiring main body 92. You may comprise so that the 2nd terminal part 91b to take out may be provided in the both sides of the 1st terminal part 91a.

  In the present embodiment, the capacitive touch panel device 100 is configured by attaching the first conductor layer 1 and the second conductor layer 2 via the adhesive layer. In this way, a resistive film type touch panel can be configured. That is, a resistive film type touch panel can be configured by disposing the first conductor layer 1 and the second conductor so as to face each other at a predetermined interval via a spacer.

  The detection method of the touch position in this resistive film type touch panel is the same as that of the conventional resistive film type touch panel, and the first electrode unit is formed by pressing an arbitrary position on the surface side of the first substrate Z1 with a finger or the like. 11 and the second electrode portion 21 are in contact with each other, and the coordinates of the contact position are calculated by measuring the resistance value of the contact in the horizontal and vertical directions in a time-sharing manner.

DESCRIPTION OF SYMBOLS 100 Touch panel apparatus 10 Touch panel T Side edge Z1 in one side edge part of a touch panel 1st transparent substrate 1 1st conductor layer 11 1st electrode part 12 1st extraction wiring 12a 1st wiring integrated part 122 The other of 1st extraction wiring End Z2 Second transparent substrate 2 Second conductor layer 21 Second electrode portion 22 Second lead wire 22a Second wire integrated portion 222 The other end of the second lead wire 3 Dielectric layer 4 Adhesive layer 9 Flexible wiring board 91 Terminal 91a 1st terminal part 91b 2nd terminal part 92 Flexible wiring main body

Claims (2)

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; the first conductor layer and the first conductor layer; A touch panel device comprising a flexible wiring board connected to two conductor layers,
The first conductor layer includes a plurality of first electrode portions arranged at intervals, and a plurality of first lead wirings whose one ends are individually connected to 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 individually connected at one end to the second electrode portions,
In a plan view, one side edge portion of the touch panel has a first wiring integrated portion in which the other ends of the plurality of first lead wires are integrated together and the other end of the plurality of second lead wires. The second wiring integrated parts integrated together are arranged adjacent to each other,
The flexible wiring board includes a terminal that is electrically connected to the first wiring integrated unit and the second wiring integrated unit, and a flexible wiring main body that is pulled out from the side of the touch panel.
The terminal is integrally connected to the flexible wiring body at one end of the flexible wiring body, and is arranged to overlap the first wiring integrated part, and to the side of the first terminal part. A second terminal portion that is connected to the outer side of the flexible wiring main body and protrudes outward from the side edge of the flexible wiring main body, and is superimposed on the second wiring integrated portion.
The second terminal portion is connected to a side edge of the flexible wiring body, and has a flush side edge substantially flush with a side edge of one side edge portion of the touch panel on which the second wiring integrated portion is disposed. And an inclined side edge that is disposed so as to face the one side edge and is inclined so that a distance from the one side edge becomes narrower as it goes in a projecting direction of the second terminal portion .
The other ends of the second lead wires are arranged at predetermined intervals, respectively.
In the second terminal portion, a plurality of conductor wires having tip portions that are superimposed on the other ends corresponding to the other ends of the second lead wires are formed,
The other end of the second lead wiring and the tip of the conductor line are configured to be inclined with respect to a side edge of one side edge of the touch panel on which the second wiring integrated part is formed. and it has a touch panel device. In each combination of the other end of each of the second lead wires and the leading end of each of the conductor wires corresponding to the other end, the combinations are arranged along the extending direction of the second terminal portion. The touch panel device according to claim 1, wherein the touch panel device is formed to be substantially perpendicular to the inclined side edge of the second terminal portion.

Images