WO2022163158A1 - タッチパネル用導電部材、タッチパネル、タッチパネル表示装置およびタッチパネル用導電部材の製造方法 - Google Patents
タッチパネル用導電部材、タッチパネル、タッチパネル表示装置およびタッチパネル用導電部材の製造方法 Download PDFInfo
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- WO2022163158A1 WO2022163158A1 PCT/JP2021/045296 JP2021045296W WO2022163158A1 WO 2022163158 A1 WO2022163158 A1 WO 2022163158A1 JP 2021045296 W JP2021045296 W JP 2021045296W WO 2022163158 A1 WO2022163158 A1 WO 2022163158A1
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- anchor
- electrode portion
- conductive layer
- wiring
- electrically connected
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Definitions
- the present invention relates to a touch panel conductive member used as an electrode for detecting a touch operation.
- the present invention also relates to a touch panel including the touch panel conductive member.
- the present invention also relates to a touch panel display device including a touch panel.
- the present invention also relates to a method for manufacturing a conductive member for a touch panel.
- touch panels that enable input operations to electronic devices by so-called touch operations, such as touching or approaching the screen with a finger, stylus pen, etc.
- a display device is used.
- Such a touch panel display device has a conductive member formed with a detection section for detecting a touch operation.
- the detection section may be made of a transparent conductive oxide such as ITO (Indium Tin Oxide), but other than the transparent conductive oxide, it may also be made of an opaque conductive material such as metal.
- Opaque conductive materials such as metals have advantages over the above-described transparent conductive oxides, such as easier patterning, superior flexibility, and lower resistance.
- a first electrode layer is laminated on one surface of a substrate made of glass, an insulating layer is laminated on the first electrode layer, and a second electrode layer is laminated on the insulating layer.
- a conductive member is described.
- the first electrode layer includes a detection electrode portion for detecting a touch operation, a lead wire drawn out from the detection electrode portion, and an anchor electrode portion connected to the lead wire and electrically connected to an external electric circuit. and
- the anchor electrode portion has one end portion connected to the lead wire and the other end portion exposed from the insulating layer. are arranged. This prevents the anchor electrode portion from being damaged during the manufacturing process.
- Patent Document 1 a glass base material is used, but in some cases it is desired to use a flexible base material formed of resin or the like instead of the glass base material in order to improve the convenience of the conductive member. .
- a flexible base material when the flexible base material is used, when the flexible base material is bent, the stress acting on the interface between the anchor electrode part and the connection terminal part tends to separate the connection terminal part from the anchor electrode part. There was a problem of becoming
- the present invention has been made to solve such conventional problems, and provides a conductive member for a touch panel that can suppress peeling of a connection terminal portion while using a flexible base material. With the goal. Another object of the present invention is to provide a touch panel including this conductive member for a touch panel. Another object of the present invention is to provide a touch panel display device including this touch panel. Another object of the present invention is to provide a method for manufacturing a touch panel conductive member.
- a conductive member for a touch panel comprises a flexible base material, a first conductive layer disposed on one surface of the flexible base material, and an insulating layer disposed on the first conductive layer. and a second conductive layer disposed on the insulating layer and the first conductive layer, and the flexible base includes, in plan view, a visible area, a peripheral wiring area located outside the visible area, and a connection wiring region positioned outside the peripheral wiring region in a predetermined direction, the first conductive layer comprising a first detection electrode portion arranged in the visible region; and an anchor electrode portion disposed in the connection wiring region and electrically connected to the first lead wiring portion, wherein the second conductive layer is the visible region.
- the first connection terminal has a region, the first connection terminal covers the anchor electrode in the exposed region, is electrically connected to the anchor electrode, and has a shape pattern of the portion of the anchor electrode covered by the first connection terminal. is characterized in that the sum Y1 of the lengths of the components orthogonal to the defined direction is greater than or equal to the sum X1 of the lengths of the components parallel to the defined direction.
- a conductive member for a touch panel comprises a flexible base material, a first conductive layer disposed on one surface of the flexible base material, and an insulating layer disposed on the first conductive layer. and a second conductive layer disposed on the insulating layer and the first conductive layer, and the flexible base includes, in plan view, a visible area, a peripheral wiring area located outside the visible area, and a connection wiring region positioned outside the peripheral wiring region in a predetermined direction, the first conductive layer comprising a first detection electrode portion arranged in the visible region; and an anchor electrode portion disposed in the connection wiring region and at least partially electrically connected to the first lead wiring portion, the second conductive layer includes a second detection electrode portion arranged in the visible region, a second extraction wiring portion arranged in the peripheral wiring region and electrically connected to the second detection electrode portion, and a second detection electrode portion arranged in the connection wiring region and a second connection terminal portion electrically connected to the lead-out wiring portion; and a first connection terminal portion connected to the first lead
- the independent anchor portion can have a plurality of unit anchor portions spaced apart from each other.
- the ratio of the area of the anchor electrode portion in the exposed region to the area of the first connection terminal portion in the exposed region is preferably 50% or less.
- the first conductive layer and the second conductive layer can be formed from the same metallic material.
- the touch panel in the present invention is arranged on the second conductive layer via the conductive member for the touch panel, the circuit board electrically connected to the first connection terminal portion and the second connection terminal portion, and the adhesive. and a cover member.
- a touch panel display device is characterized by comprising the touch panel described above and a display module having a display surface and having the display surface bonded to the other surface of a flexible substrate via an adhesive. .
- the circuit board may have one end connected to the first connection terminal portion and the second connection terminal portion, and the other end may be folded back so as to face the surface of the display module opposite to the display surface.
- the connection wiring region may be folded so that its end faces the surface of the display module opposite to the display surface.
- a method for manufacturing a conductive member for a touch panel includes a first step of forming a first conductive layer on one surface of a flexible base material, and forming an insulating layer on the first conductive layer. a second step; and a third step of forming a second conductive layer on the insulating layer and the first conductive layer, wherein the flexible base includes a visible area and peripheral wiring located outside the visible area.
- the first conductive layer comprising: a first detection electrode portion arranged in the visible region; a first lead wire portion electrically connected to the first electrode portion; and an anchor electrode portion disposed in the connection wire region and electrically connected to the first lead wire portion; , a second detection electrode portion arranged in the visible region, a second lead wiring portion arranged in the peripheral wiring region and electrically connected to the second detection electrode portion, and a second lead wire portion arranged in the connection wiring region and a second connection terminal portion electrically connected to the wiring portion; a second connection terminal portion disposed in the connection wiring region;
- the anchor electrode part forms a shape pattern in which the surface of the flexible base material is partially exposed in a plan view, and at least a part of the anchor electrode part is covered with an insulating layer.
- the first connection terminal portion covers the anchor electrode portion in the exposed region and is electrically connected to the anchor electrode portion, and the portion of the anchor electrode portion covered by the first connection terminal portion is covered by the first connection terminal portion.
- the contour line of the shape pattern is characterized in that the sum of the lengths of the components orthogonal to the determined direction is greater than or equal to the sum of the lengths of the components parallel to the determined direction.
- a method for manufacturing a conductive member for a touch panel includes a first step of forming a first conductive layer on one surface of a flexible base material, and forming an insulating layer on the first conductive layer.
- the first conductive layer comprising: a first detection electrode portion arranged in the visible region; a first lead wire portion electrically connected to the first electrode portion; and an anchor electrode portion disposed in the connection wire region and electrically connected to the first lead wire portion; , a second detection electrode portion arranged in the visible region, a second lead wiring portion arranged in the peripheral wiring region and electrically connected to the second detection electrode portion, and a second lead wire portion arranged in the connection wiring region and a second connection terminal portion electrically connected to the wiring portion; a second connection terminal portion disposed in the connection wiring region; a first connection terminal portion connected to the anchor electrode portion; and the anchor electrode portion is independent and spaced apart in a predetermined direction with respect to the connection anchor portion connected to the first lead-out wiring portion and the connection anchor portion.
- the connecting anchor portion and the independent anchor portion have an exposed region where the insulating layer does not cover the first connecting terminal portion, the first connecting terminal portion covering the anchor electrode portion and the anchor electrode portion in the exposed region. It is characterized by being electrically connected to the part.
- connection terminal portion peeling of the connection terminal portion can be suppressed while using a flexible base material.
- FIG. 1 is a partial cross-sectional view of a touch panel conductive member according to Embodiment 1 of the present invention.
- FIG. 2 is a plan view showing a part of the touch panel conductive member according to Embodiment 1.
- FIG. FIG. 4 is a diagram showing an anchor electrode section according to Embodiment 1; 2 is a partial cross-sectional view of the touch panel display device according to Embodiment 1.
- FIG. 4 is a diagram showing a state in the middle of manufacturing the touch panel conductive member according to Embodiment 1; 3 is a partial cross-sectional view showing another example of the touch panel display device according to Embodiment 1.
- FIG. FIG. 5 is a diagram showing a modification of the anchor electrode section in Embodiment 1;
- FIG. 10 is a diagram showing an anchor electrode section according to Embodiment 2;
- FIG. 10 is a diagram showing a first modification of the anchor electrode portion according to Embodiment 2;
- FIG. 10 is a diagram showing a second modification of the anchor electrode section in Embodiment 2;
- FIG. 10 is a diagram showing a third modification of the anchor electrode section in Embodiment 2;
- the term “transparent” means that the light transmittance in the visible light wavelength range of 400 nm to 800 nm is at least 40% or more, preferably 75% or more, more preferably 80% or more, and even more preferably More than 90%.
- the light transmittance is measured using "Plastics-Determination of Total Light Transmittance and Total Light Reflectance-" defined in JIS K 7375:2008.
- FIG. 1 shows the configuration of a touch panel conductive member 1 according to Embodiment 1 of the present invention.
- the touch panel conductive member 1 includes a flexible base material 2, a first conductive layer 3 disposed on one surface of the flexible base material 2, and an insulating layer 4 disposed on the first conductive layer 3. and a second conductive layer 5 disposed on the insulating layer 4 and the first conductive layer 3 .
- An anchor electrode portion 11 exposed from the insulating layer 4 is formed at the end of the first conductive layer 3 .
- the second conductive layer 5 has a second conductive layer main body 21 laminated on the insulating layer 4 and a first connection terminal portion 22 laminated on the anchor electrode portion 11 exposed from the insulating layer 4 . .
- the second conductive layer body 21 and the first connection terminal portion 22 are spaced apart from each other and electrically insulated from each other.
- the first conductive layer 3 is preferably in direct contact with one surface of the flexible base material 2
- the insulating layer 4 is preferably in direct contact with the first conductive layer 3
- the second conductive layer 5 is It is preferably in direct contact with the first conductive layer 3 and the insulating layer 4 .
- the second conductive layer main body 21 is preferably in direct contact with the insulating layer 4
- the first connection terminal portion 22 is preferably in direct contact with the anchor electrode portion 11 .
- the touch panel conductive member 1 has a cover member (not shown) adhered to the surface on the second conductive layer 5 side, and a display module (not shown) adhered to the surface on the flexible substrate 2 side to form a touch panel display device.
- a cover member adhered to the surface on the second conductive layer 5 side
- a display module adhered to the surface on the flexible substrate 2 side to form a touch panel display device.
- FIG. 2 shows a plan view showing a part of the touch panel conductive member 1.
- the flexible base material 2 has a visible region S1 which is visually recognized by the user and for detecting a touch operation with a finger, a stylus pen, or the like, a peripheral wiring region S2 located outside the visible region S1, and a connection wiring region S3 located outside the peripheral wiring region S2 in a predetermined direction (also referred to as a first direction).
- the determined direction is the direction in which a circuit board (not shown) is connected to the touch panel conductive member 1
- the determined direction is the X direction
- the direction orthogonal to the determined direction (also referred to as the second direction) is the Y direction.
- the first conductive layer 3 disposed on the flexible base material 2 includes a first detection electrode portion 12 extending along the X direction and for detecting a touch operation, and electrically connecting the first detection electrode portion 12 to the first detection electrode portion 12 . It has a connected first lead-out wiring portion 13 and an anchor electrode portion 11 electrically connected to the first lead-out wiring portion 13 .
- the first detection electrode portion 12 is composed of a plurality of first fine metal wires M1 that intersect each other in a mesh shape, and is arranged in the visual recognition area S1. Further, the first extraction wiring portion 13 is arranged in the peripheral wiring region S2, and the anchor electrode portion 11 is arranged in the connection wiring region S3. In addition, although the first detection electrode portion 12 and the first lead-out wiring portion 13 are covered with the insulating layer 4, the anchor electrode portion 11 has an exposed region R1 at least a part of which is not covered with the insulating layer 4. ing. In FIG. 2, the exposed region R1 is indicated by hatching.
- the second conductive layer 5 arranged at a position relatively distant from the flexible base material 2 is the second conductive layer main body arranged on the insulating layer 4. 21 and a first connection terminal portion 22 which is isolated from the second conductive layer main body 21 and arranged so as to cover the periphery of the anchor electrode portion 11 .
- the exposed region R ⁇ b>1 of the anchor electrode portion 11 is covered with the first connection terminal portion 22 and electrically connected to the first connection terminal portion 22 .
- the second conductive layer main body 21 includes a second detection electrode portion 23 extending along the Y direction and for detecting a touch operation, and a second extraction wiring portion 24 electrically connected to the second detection electrode portion 23 . , and a second connection terminal portion 25 electrically connected to the second lead-out wiring portion 24 .
- the second detection electrode portion 23 is composed of a plurality of second fine metal wires M2 that intersect each other in a mesh shape, and is arranged in the visual recognition area S1. Further, the second extraction wiring portion 24 is arranged in the peripheral wiring region S2, and the second connection terminal portion 25 is arranged in the connection wiring region S3.
- the first conductive layer 3 includes a plurality of first detection electrode portions 12 extending along the X direction and arranged in the Y direction, and a plurality of first detection electrode portions 12 . 12 and a plurality of anchor electrode portions 11 electrically connected to the first lead wiring portions 13 .
- the second conductive layer 5 includes a plurality of second detection electrode portions 23 extending along the Y direction and arranged in the X direction, and a plurality of electrodes electrically connected to the plurality of second detection electrode portions 23 . and a plurality of second connection terminal portions 25 electrically connected to the plurality of second lead-out wiring portions 24 .
- the plurality of anchor electrode portions 11 of the first conductive layer 3 and the plurality of second connection terminal portions 25 of the second conductive layer 5 are arranged in the connection wiring region S3 while being arranged in the Y direction.
- the first detection electrode portion 12 may extend along the X direction in which the anchor electrode portion 11 extends, and the second detection electrode portion 23 may extend in the Y direction orthogonal to the X direction in which the anchor electrode portion 11 extends.
- the direction in which the first detection electrode portion 12 extends is not limited to the X direction, and the second detection electrode portion 23 is not limited to the Y direction.
- FIG. 3 shows a plan view of the anchor electrode portion 11.
- the anchor electrode portion 11 has a rectangular outer shape with long sides along the X direction and short sides along the Y direction in plan view, and has long sides along the Y direction and short sides along the X direction.
- a plurality of rectangular openings A1 having sides are formed so as to be arranged at intervals in the X direction.
- the plurality of openings A1 are arranged in the exposed region R1 of the anchor electrode portion 11 . That is, the anchor electrode portion 11 forms a shape pattern such that the surface of the underlying flexible base material 2 is partially exposed through the plurality of openings A1.
- the total length Y1 is set to be greater than or equal to the total length X1 of the components parallel to the X direction.
- the outline of the anchor electrode portion 11 extends along the defined direction, ie, the X direction, or the direction orthogonal to the defined direction, ie, the Y direction, the X direction and the Y direction are described. It may extend along a direction that intersects the direction.
- cos ⁇ is the cosine function of angle ⁇
- sin ⁇ is the sine function of angle ⁇ .
- the total value X1 of the lengths of the components of the contour line parallel to the X direction in the anchor electrode portion 11 is the length of the component of the contour line parallel to the X direction calculated using the formula (1). It is obtained as the sum of the values calculated over all 11 contour lines.
- the total value Y1 of the lengths of the components of the contour line parallel to the Y direction in the anchor electrode portion 11 is the length of the component of the contour line parallel to the Y direction calculated using the equation (2). It is obtained as the sum of the values calculated over all contour lines of the electrode part 11 .
- the shape of the anchor electrode portion 11 an example in which a plurality of openings A1 are formed as shown in FIG.
- the shape of the anchor electrode part 11 is not limited to that shown in FIG.
- the first connection terminal portion 22 and the second connection terminal portion 25 arranged in the connection wiring region S3 are connected to, for example, a flexible circuit board (not shown) and is electrically connected to an external electrical circuit.
- the flexible circuit board is arranged so as to protrude from the flexible base material 2 in the X direction. 22, a stress in the X direction and a stress in the Z direction orthogonal to the XY plane are generated.
- Such stress causes separation between the first connection terminal portion 22 and the anchor electrode portion 11, but the total value Y1 of the lengths parallel to the Y direction of the outline of the anchor electrode portion 11 is Since the total length of the components parallel to the X-direction is equal to or greater than X1, the first connection terminal portion 22 can resist the stress directed in the X-direction. detachment between is suppressed.
- the anchor electrode portion 11 is the total length of the component parallel to the Y direction of the edge portion of the anchor electrode portion 11 in plan view. Since the pattern is formed such that the value Y1 is equal to or greater than the total value X1 of the lengths of the components parallel to the X direction, peeling between the first connection terminal portion 22 and the anchor electrode portion 11 can be suppressed. .
- the anchor electrode portion 11B includes a mesh-shaped portion E1 formed with a plurality of openings A2 arranged in two directions perpendicular to each other, a long side along the Y direction, and an opening along the X direction. It can also be formed in a pattern having a rectangular portion E2 with a short side.
- the anchor electrode portion 11B forms a shape pattern such that the surface of the underlying flexible base material 2 is partially exposed through the plurality of openings A2. Even when the anchor electrode portions 11B are formed in the pattern shown in FIG. 7, the total value Y1 of the lengths of the outlines of the anchor electrode portions 11B parallel to the Y direction is the sum of the lengths of the components parallel to the X direction. Since it is equal to or greater than the value X1, the stress acting on the interface between the first connection terminal portion 22 and the anchor electrode portion 11B can be resisted, and peeling between the first connection terminal portion 22 and the anchor electrode portion 11B is suppressed. .
- the ratio of the area of the anchor electrode portion 11 in the exposed region R1 to the area of the first connection terminal portion 22 in the exposed region R1 is preferably 50% or less.
- the area ratio to fall within this range, the stress acting on the first connection terminal portion 22 and the anchor electrode portion 11 can be further alleviated, and the first connection terminal portion 22 and the flexible base material 2 can be further relieved.
- the adhesion between the first connection terminal portion 22 and the anchor electrode portion 11B can be further suppressed.
- the ratio of the area of the anchor electrode portion 11 in the exposed region R1 to the area of the first connection terminal portion 22 in the exposed region R1 is more preferably 45% or less, and most preferably 40% or less.
- the ratio of the area of the anchor electrode portion 11 in the exposed region R1 to the area of the first connection terminal portion 22 in the exposed region R1 is preferably 10% or more, more preferably 20% or less.
- a touch panel 6 is configured by bonding a transparent cover member 8 onto the second conductive layer 5 of the touch panel conductive member 1 of Embodiment 1 with a transparent adhesive B1. can do.
- the cover member 8 protects the touch panel conductive member 1 and forms a touch surface on which a touch operation is performed by a user's finger, a stylus pen, or the like.
- the decorative printed portion D is opaque, and includes the first detection electrode portion 12 of the first conductive layer 3, the first lead wire portion 13, the anchor electrode portion 11, the second detection electrode portion 23 of the second conductive layer 5, the second It plays a role of covering and concealing the second lead wiring portion 24 , the first connection terminal portion 22 and the second connection terminal portion 25 .
- One end of a flexible circuit board C which is electrically connected to an external electric circuit (not shown), is connected to the surface of the first connection terminal portion 22 on the side of the cover member 8 .
- one end of the flexible circuit board C is similarly connected to the second connection terminal portion 25 of the second conductive layer 5 as well.
- a display module 9 for displaying an image is attached to the surface of the flexible base material 2 opposite to the first conductive layer 3 with a transparent adhesive B2, whereby the touch panel A display device 7 may be configured.
- the display module 9 includes a display surface such as a liquid crystal display, a controller for controlling image display on the display surface, and the like. A user of the touch panel display device 7 visually recognizes an image displayed on the display module 9 through the touch panel 6 and performs a touch operation through the touch panel 6 based on the visually recognized image.
- the flexible circuit board C has one end connected to the first connection terminal portion 22 and the second connection terminal portion 25 , and the other end thereof is opposite to the display surface of the display module 9 . is folded so as to face the face of the Since the touch panel display device 7 includes the touch panel conductive member 1 of Embodiment 1 of the present invention, the risk of failure due to the separation between the first connection terminal portion 22 and the anchor electrode portion 11 is suppressed. obtain.
- the flexible circuit board C connected to the first connection terminal portion 22 and the second connection terminal portion 25 is connected to the surface of the display module 9 opposite to the display surface. Although they are folded to face each other, for example, as shown in FIG. may be folded back so as to face the opposite surface, and the flexible circuit board C may be connected to the first connection terminal portion 22A and the second connection terminal portion 25 at the ends thereof.
- the anchor electrode portion 11A similarly to the anchor electrode portion 11 shown in FIG. 3, the total value Y1 of the lengths of the components parallel to the Y direction of the outline of the anchor electrode portion 11A is equal to the length of the components parallel to the X direction. It is assumed that it is set to be equal to or greater than the total value X1 of the height.
- each member constituting the touch panel conductive member 1 and the touch panel 6 of Embodiment 1 will be described below. It should be noted that each member constituting the touch panel conductive member of Embodiment 2, which will be described later, also conforms to each member constituting the touch panel conductive member 1 of Embodiment 1.
- FIG. 1 Each member constituting the touch panel conductive member 1 and the touch panel 6 of Embodiment 1 will be described below. It should be noted that each member constituting the touch panel conductive member of Embodiment 2, which will be described later, also conforms to each member constituting the touch panel conductive member 1 of Embodiment 1. FIG.
- the flexible base material 2 is not particularly limited as long as it is transparent, electrically insulating, and flexible.
- a resin base material or the like is used. More specifically, examples of materials constituting the flexible base material 2 include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), cyclo-olefin polymer (COP), Cyclic olefin copolymer (COC), polycarbonate (PC), acrylic resin, polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC) chloride), polyvinylidene chloride (PVDC), triacetyl cellulose (TAC) and the like can be used.
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- COP cyclo-olefin polymer
- COC Cyclic olefin copolymer
- PC polycarbonate
- acrylic resin polyethylene
- PE polyethylene
- PP polypropylene
- the thickness of the flexible base material 2 is, for example, preferably 20 ⁇ m to 1100 ⁇ m, more preferably 20 ⁇ m to 500 ⁇ m.
- the thickness is preferably 20 ⁇ m to 200 ⁇ m, more preferably 30 ⁇ m to 100 ⁇ m.
- the total light transmittance of the flexible base material 2 is preferably 40% to 100%.
- the total light transmittance is measured using, for example, "Plastics - Determination of total light transmittance and total light reflectance" defined in JIS K 7375:2008.
- One preferred embodiment of the flexible substrate 2 is a treated substrate that has been subjected to at least one treatment selected from the group consisting of atmospheric pressure plasma treatment, corona discharge treatment and ultraviolet irradiation treatment.
- a hydrophilic group such as an OH group is introduced to the surface of the treated flexible substrate 2, and the adhesion between the flexible substrate 2 and the first conductive layer 3 is improved. improves.
- the atmospheric pressure plasma treatment is preferable in terms of further improving the adhesion between the flexible base material 2 and the first conductive layer 3 .
- the first conductive layer 3 and the second conductive layer 5 can be made of, for example, silver, copper, gold, aluminum, nickel, chromium, molybdenum, or tungsten, using a metal or alloy as a forming material.
- the first conductive layer 3 and the second conductive layer 5 preferably contain copper, but may contain metals other than copper, such as gold and silver.
- the first conductive layer 3 and the second conductive layer 5 may contain metallic silver and a polymer binder such as gelatin or acrylic/styrene latex suitable for forming a mesh pattern. Other preferred metals are aluminum, silver, molybdenum, titanium and alloys thereof.
- a laminated structure of these may be used, and for example, a thin metal wire having a laminated structure such as molybdenum/copper/molybdenum or molybdenum/aluminum/molybdenum can be used.
- first conductive layer 3 and the second conductive layer 5 include, for example, metal oxide particles, metal pastes such as silver paste and copper paste, and metal nanowire particles such as silver nanowires and copper nanowires. good too.
- the first conductive layer and the second conductive layer are preferably made of the same metal material.
- the first conductive layer 3 and the second conductive layer 5 can be formed by forming a copper foil layer by sputtering and forming copper wiring from the copper foil layer by a photolithography method.
- the copper foil layer can also be formed by so-called vapor deposition instead of sputtering.
- Electrolytic copper foil can be used for the copper foil layer in addition to sputtered copper foil or vapor-deposited copper foil. More specifically, the process of forming a copper wiring described in JP-A-2014-29614 can be used.
- the first conductive layer 3 and the second conductive layer 5 can be configured using a metal plating film formed on the underlying layer by applying electroless plating to the underlying layer.
- the first conductive layer 3 and the second conductive layer 5 are formed by patterning a catalyst ink containing at least metal fine particles on a substrate, and then immersing the substrate in an electroless plating bath to form a metal plating film. is formed by forming More specifically, the method for producing a metal coated base material described in JP-A-2014-159620 can be used.
- the first conductive layer 3 and the second conductive layer 5 are formed by patterning a resin composition having a functional group capable of interacting with at least a metal catalyst precursor on a substrate, and then adding a catalyst or a catalyst precursor. and immersing the substrate in an electroless plating bath to form a metal plating film. More specifically, the method for producing a metal coating substrate described in JP-A-2012-144761 can be applied.
- a method of forming the first conductive layer 3 and the second conductive layer 5 by the silver salt method will be described.
- a silver salt emulsion layer containing silver halide is subjected to an exposure process using an exposure pattern for forming the first conductive layer 3 and the second conductive layer 5, and then a development process is performed to obtain the first conductive layer 3. and a second conductive layer 5 can be formed.
- JP 2012-6377, JP 2014-112512, JP 2014-209332, JP 2015-22397, JP 2016-192200 and International Publication No. 2016 /157585 can be used.
- a method of forming the first conductive layer 3 and the second conductive layer 5 by printing will be described.
- a conductive paste containing conductive powder is applied to the substrate in the same pattern as the first conductive layer 3 and the second conductive layer 5, and then heat-treated to form the first conductive layer 3 and the second conductive layer 5.
- Two conductive layers 5 can be formed. Pattern formation using a conductive paste is performed by, for example, an inkjet method or a screen printing method.
- the conductive paste more specifically, the conductive paste described in JP-A-2011-28985 can be used.
- ⁇ Cover member> As the material of the cover member 8, tempered glass, polycarbonate, polyethylene terephthalate, polymethyl methacrylate (PMMA), etc. can be used, and the thickness of the cover member 8 is preferably 0.1 mm to 1.5 mm. .
- ⁇ Adhesive> As the adhesive B1 for adhering the touch panel conductive member 1 and the cover member 8 to each other and the adhesive B2 for adhering the touch panel conductive member 1 and the display module 9 to each other, an optical clear adhesive sheet (OCA) or An optically transparent adhesive resin (OCR: Optical Clear Resin) can be used, and the preferred film thickness is 10 ⁇ m or more and 200 ⁇ m or less.
- OCA optical clear adhesive sheet
- OCR optically transparent adhesive resin
- the optically transparent adhesive sheet for example, 8146 series manufactured by 3M can be used.
- FIG. 8 shows an anchor electrode portion 11C according to the second embodiment.
- the anchor electrode portion 11C has a rectangular connection anchor portion E3 electrically connected to the first lead wire portion 13, and an independent anchor portion E4 spaced from the connection anchor portion E3 in the X direction. is doing. Further, the anchor electrode portion 11C has an exposed region R1 that is not covered with the insulating layer 4, and at least part of the connection anchor portion E3 and the independent anchor portion E4 are arranged in the exposed region R1.
- the independent anchor portion E4 has a plurality of unit anchor portions F4 arranged at intervals in the X direction.
- Each unit anchor portion F4 has a long side along the Y direction and a long side along the X direction. It has the shape of a rectangle with short sides.
- the first connection terminal portion 22 of the second conductive layer 5 is formed on the anchor electrode portion 11C and the flexible base material 2 so as to electrically connect the connection anchor portion E3 and the independent anchor portion E4.
- FIG. 4 when the flexible circuit board connected to the first connection terminal portion 22 and the second connection terminal portion 25 is folded back, or as shown in FIG.
- the anchor electrode portion 11C When the laminate composed of the anchor electrode portion 11A and the first connection terminal portion 22A is folded back, stress acts on the interface between the anchor electrode portion 11C and the first connection terminal portion 22, but the anchor electrode portion 11C is Since the independent anchor portion E4 is arranged at intervals in the X direction from the connection anchor portion E3 and is composed of a plurality of unit anchor portions F4, the stress is dispersed by the independent anchor portion E4 without being concentrated, Peeling between the first connection terminal portion 22 and the anchor electrode portion 11C can be suppressed.
- the first connection terminal portion 22 and the anchor electrode Separation from the portion 11C can be suppressed.
- the independent anchor portion E4 has a plurality of unit anchor portions F4.
- the stress acting on the first connection terminal portion 22 is dispersed, and peeling between the anchor electrode portion 11C and the first connection terminal portion 22 can be suppressed.
- the independent anchor portion E4 preferably has two or more unit anchor portions F4.
- the shape of the anchor electrode portion 11C is not particularly limited to the shape shown in FIG.
- the anchor electrode portion 11D can have an independent anchor portion E5 in which a plurality of rectangular unit anchor portions F5 are arranged in the X direction and the Y direction.
- the connection anchor portion E3 and the independent anchor portion E5 are arranged in the exposed region R1.
- the shape of this unit anchor portion F5 is not limited to a rectangle, and can be designed in any shape such as a rhombus, a circle, and a polygon, for example.
- the anchor electrode portion 11E shown in FIG. 10 has a long side along the X direction and a short side along the Y direction, and one end of each of a plurality of rectangular portions G1 arranged in the Y direction. has a connecting anchor portion E6 and an independent anchor portion E7.
- Each independent anchor portion E7 has a rectangular shape with long sides along the Y direction and short sides along the X direction, and has a plurality of unit anchor portions F7 arranged in the X direction.
- at least part of the connection anchor portion E6 and the independent anchor portion E7 are arranged in the exposed region R1.
- the anchor electrode portion 11F shown in FIG. 11 has a substantially rectangular connecting anchor portion E8 and an independent anchor portion E9. It has a plurality of rectangular unit anchor portions F9 having short sides along the . Also in the anchor electrode portion 11F, at least part of the connection anchor portion E8 and the independent anchor portion E9 are arranged in the exposed region R1. The independent anchor portions E9 are arranged such that a plurality of unit anchor portions F9 are staggered in the Y direction.
- the touch panel conductive member of Embodiment 2 can have the same configuration as the touch panel conductive member of Embodiment 1 described above except for the above-described anchor electrode portion.
- a method for manufacturing the touch panel conductive member 1 according to Embodiment 1 of the present invention will be described.
- the flexible base material 2 is prepared, and the first detection electrode part 12, the first lead-out wiring part 13 and the anchor electrode part 11 are patterned on the flexible base material 2, and the first conductive layer 3 is formed.
- the insulating layer 4 is patterned so that the exposed regions R1 of the anchor electrode portions 11 are exposed, and the insulating layer 4 is formed on the first conductive layer 3 as shown in FIG.
- the second conductive layer main body 21 including the second detection electrode portion 23, the second lead-out wiring portion 24 and the second connection terminal portion 25 is patterned on the insulating layer 4, and at the same time, the anchor electrode portion 11 is covered.
- the second conductive layer 5 is formed by patterning the first connection terminal portion 22 so as to be spaced apart from the second conductive layer main body 21 .
- the touch panel conductive member 1 is manufactured.
- the anchor electrode portion 11 is covered with the first connection terminal portion 22, the risk of damage during the manufacturing process of the touch panel conductive member 1 is reduced. Moreover, since the second conductive layer main body 21 and the first connection terminal portion 22 are formed at the same time, the touch panel conductive member 1 can be manufactured in a small number of steps.
- the method for manufacturing the conductive member 2 for a touch panel according to the second embodiment is also based on the method for manufacturing the conductive member 1 for a touch panel according to the first embodiment.
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Abstract
Description
また、本発明は、タッチパネル用導電部材を含むタッチパネルにも関する。
また、本発明は、タッチパネルを含むタッチパネル表示装置にも関する。
さらに、本発明は、タッチパネル用導電部材の製造方法にも関する。
検出部は、ITO(Indium Tin Oxide)等の透明導電性酸化物で形成されることがあるが、透明導電性酸化物以外に金属等の不透明な導電材料でも形成される。金属等の不透明な導電材料は上述の透明導電性酸化物に比べて、パターニングがしやすく、屈曲性に優れ、抵抗がより低い等の利点がある。
また、本発明は、このタッチパネル用導電部材を含むタッチパネルを提供することも目的とする。
また、本発明は、このタッチパネルを含むタッチパネル表示装置を提供することも目的とする。
さらに、本発明は、タッチパネル用導電部材を製造するタッチパネル用導電部材の製造方法を提供することも目的とする。
平面視において、露出領域における第1接続端子部の面積に対する露出領域におけるアンカー電極部の面積の比率は50%以下であることが好ましい。
第1導電層および第2導電層は、同一の金属材料から形成することができる。
接続配線領域は、その端部が表示モジュールの表示面とは反対側の面と対向するように折り返されていてもよい。
なお、以下において、数値範囲を示す表記「~」は、両側に記載された数値を含むものとする。例えば、「sが数値t1~数値t2である」とは、sの範囲は数値t1と数値t2を含む範囲であり、数学記号で示せばt1≦s≦t2である。
「直交」および「平行」等を含め角度は、特に記載がなければ、技術分野で一般的に許容される誤差範囲を含むものとする。
「透明」とは、光透過率が、波長400nm~800nmの可視光波長域において、少なくとも40%以上のことであり、好ましくは75%以上であり、より好ましくは80%以上、さらにより好ましくは90%以上のことである。光透過率は、JIS K 7375:2008に規定される「プラスチック-全光線透過率および全光線反射率の求め方-」を用いて測定されるものである。
図1に、本発明の実施の形態1に係るタッチパネル用導電部材1の構成を示す。
タッチパネル用導電部材1は、可撓性基材2と、可撓性基材2の一方の面上に配置された第1導電層3と、第1導電層3上に配置された絶縁層4と、絶縁層4上および第1導電層3上に配置された第2導電層5を備えている。第1導電層3には、その端部に、絶縁層4から露出したアンカー電極部11が形成されている。第2導電層5は、絶縁層4上に積層された第2導電層本体21と、絶縁層4から露出したアンカー電極部11上に積層された第1接続端子部22とを有している。第2導電層本体21と第1接続端子部22とは、互いに間隔を隔てて配置されており、互いに電気的に絶縁されている。
第1導電層3は可撓性基材2の一方の面に直接接していることが好ましく、絶縁層4は第1導電層3に直接接していることが好ましく、第2導電層5は、第1導電層3および絶縁層4に直接接していることが好ましい。第2導電層本体21は絶縁層4に直接接していることが好ましく、第1接続端子部22はアンカー電極部11に直接接していることが好ましい。
可撓性基材2は、平面視において、使用者により視認され且つ指およびスタイラスペン等によるタッチ操作を検出するための視認領域S1と、視認領域S1の外側に位置する周辺配線領域S2と、定められた方向(第1の方向ともいう)における周辺配線領域S2の外側に位置する接続配線領域S3とを有している。ここで、定められた方向とは、タッチパネル用導電部材1に回路基板(図示しない)が接続される方向であり、定められた方向をX方向とし、定められた方向に対して直交する方向(第2の方向ともいう)をY方向とする。
第2検出電極部23は、互いにメッシュ状に交差した複数の第2金属細線M2からなり、視認領域S1に配置されている。また、第2引き出し配線部24は周辺配線領域S2に配置され、第2接続端子部25は接続配線領域S3に配置されている。
また、第1導電層3の複数のアンカー電極部11と第2導電層5の複数の第2接続端子部25は、Y方向に配列された状態で、接続配線領域S3に配置されている。
アンカー電極部11は、平面視において、X方向に沿った長辺とY方向に沿った短辺を有する長方形の外形を有し、また、Y方向に沿った長辺とX方向に沿った短辺を有する複数の長方形の開口部A1が、X方向に間隔を隔てて配列されるように形成されている。これら複数の開口部A1は、アンカー電極部11の露出領域R1に配置されている。すなわち、アンカー電極部11は、複数の開口部A1を通して下層の可撓性基材2の表面が部分的に露出するような形状パターンを形成している。複数の長方形の開口部A1の存在により、アンカー電極部11の輪郭線、すなわち、アンカー電極部11の長方形の外形の縁部と複数の開口部A1の縁部の、Y方向に平行な成分の長さの合計値Y1は、X方向に平行な成分の長さの合計値X1以上となるように設定されている。
(輪郭線のX方向に平行な成分の長さ)=(輪郭線の長さ)×cosθ・・・(1)
(輪郭線のY方向に平行な成分の長さ)=(輪郭線の長さ)×sinθ・・・(2)
(ただし、0°≦θ≦90°)の関係により算出できる。ここで、cosθは角度θの余弦関数であり、sinθは角度θの正弦関数である。
露出領域R1における第1接続端子部22の面積に対する、露出領域R1におけるアンカー電極部11の面積の比率は45%以下であることが更に好ましく、40%以下であることが最も好ましい。露出領域R1における第1接続端子部22の面積に対する、露出領域R1におけるアンカー電極部11の面積の比率は10%以上であることが好ましく、20%以下であることが更に好ましい。
タッチパネル表示装置7は、本発明の実施の形態1のタッチパネル用導電部材1を備えているため、第1接続端子部22とアンカー電極部11との間の剥離に起因する故障のリスクが抑制され得る。
可撓性基材2は、透明で電気絶縁性を有し、可撓性を有していれば、特に限定されるものではないが、例えば、樹脂基材等が用いられる。より具体的に、可撓性基材2を構成する材料として、例えば、ポリエチレンテレフタレート(PET:polyethylene terephthalate)、ポリエチレンナフタレート(PEN:polyethylene naphthalate)、シクロオレフィンポリマー(COP:cyclo-olefin polymer)、環状オレフィン・コポリマー(COC:cyclic olefin copolymer)、ポリカーボネート(PC:polycarbonate)、アクリル樹脂、ポリエチレン(PE:polyethylene)、ポリプロピレン(PP:polypropylene)、ポリスチレン(PS:polystylene)、ポリ塩化ビニル(PVC:polyvinyl chloride)、ポリ塩化ビニリデン(PVDC:polyvinylidene chloride)、トリアセチルセルロース(TAC:cellulose triacetate)等を使用することができる。可撓性基材2の厚みは、例えば、20μm~1100μmが好ましく、20μm~500μmがより好ましい。特に、PETのような有機樹脂基板の場合は、厚み20μm~200μmであることが好ましく、30μm~100μmであることがより好ましい。
第1導電層3および第2導電層5は、金属または合金を形成材料として、例えば、銀、銅、金、アルミニウム、ニッケル、クロム、モリブデンまたはタングステンから形成することができる。第1導電層3および第2導電層5には、銅が含まれることが好ましいが、銅以外の金属、例えば、金、銀等が含まれていてもよい。また、第1導電層3および第2導電層5は、メッシュパターンの形成に好適な、金属銀およびゼラチンまたはアクリル・スチレン系ラテックス等の高分子バインダーが含有されたものでもよい。その他の好ましいものとして、アルミニウム、銀、モリブデン、チタンの金属およびその合金である。また、これらの積層構造であってもよく、例えば、モリブデン/銅/モリブデン、モリブデン/アルミニウム/モリブデン等の積層構造の金属細線が使用できる。
スパッタ法による第1導電層3および第2導電層5の形成方法について説明する。まず、スパッタにより、銅箔層を形成し、フォトリソグラフィの方法により銅箔層から銅配線を形成することにより、第1導電層3および第2導電層5を形成することができる。なお、スパッタの代わりに、いわゆる蒸着により銅箔層を形成することもできる。銅箔層は、スパッタ銅箔または蒸着銅箔以外にも、電解銅箔が利用可能である。より具体的には、特開2014-29614号公報に記載の銅配線を形成する工程を利用することができる。
カバー部材8の材質としては、強化ガラス、ポリカーボネート、ポリエチレンテレフタレート、ポリメタクリル酸メチル樹脂(PMMA:polymethyl methacrylate)等を使用することができ、カバー部材8の厚みは0.1mm~1.5mmが好ましい。
<粘着剤>
タッチパネル用導電部材1とカバー部材8とを互いに接着させる粘着剤B1およびタッチパネル用導電部材1と表示モジュール9とを互いに接着させる粘着剤B2としては、光学透明粘着シート(OCA:Optical Clear Adhesive)または光学透明粘着樹脂(OCR:Optical Clear Resin)を使用することができ、好ましい膜厚は、10μm以上200μm以下である。光学透明粘着シートとしては、例えば、3M社製の8146シリーズの使用が可能である。
図8に、実施の形態2におけるアンカー電極部11Cを示す。
アンカー電極部11Cは、第1引き出し配線部13に電気的に接続された矩形状の接続アンカー部E3と、接続アンカー部E3からX方向に間隔を隔てて配置された独立アンカー部E4とを有している。また、アンカー電極部11Cは、絶縁層4により被覆されていない露出領域R1を有しており、接続アンカー部E3の少なくとも一部と独立アンカー部E4は、露出領域R1に配置されている。
ここで、図4に示すように、第1接続端子部22および第2接続端子部25に接続されたフレキシブル回路基板が折り返される際、または、図6に示すように、可撓性基材2Aとアンカー電極部11Aと第1接続端子部22Aからなる積層体が折り返される際等には、アンカー電極部11Cおよび第1接続端子部22の界面に応力が作用するが、アンカー電極部11Cは、接続アンカー部E3からX方向に間隔を隔てて配置され且つ複数の単位アンカー部F4からなる独立アンカー部E4を有しているため、応力が集中することなく、独立アンカー部E4により分散されて、第1接続端子部22とアンカー電極部11Cとの間の剥離が抑制され得る。
例えば、図9に示すように、アンカー電極部11Dは、X方向およびY方向に複数の矩形の単位アンカー部F5が配列された独立アンカー部E5を有することもできる。アンカー電極部11Dにおいても、接続アンカー部E3の少なくとも一部と独立アンカー部E5は、露出領域R1に配置されている。
この単位アンカー部F5の形状は、矩形に限定されず、例えば、ひし形、円形および多角形等の任意の形状に設計され得る。
なお、実施の形態2のタッチパネル用導電部材は、上述アンカー電極部以外については、上述の実施の形態1のタッチパネル用導電部材と同様の構成とすることができる。
まず、可撓性基材2を用意し、この可撓性基材2上に、第1検出電極部12、第1引き出し配線部13およびアンカー電極部11をパターニングして、第1導電層3を形成する。
次に、アンカー電極部11の露出領域R1が露出するように絶縁層4をパターニングして、図5に示すように、第1導電層3上に絶縁層4を形成する。
このようにして、タッチパネル用導電部材1が製造される。
なお、実施の形態2に係るタッチパネル用導電部材2の製造方法についても、実施の形態1に係るタッチパネル用導電部材1の製造方法に準ずるものとする。
Claims (11)
- 可撓性基材と、
前記可撓性基材の一方の表面上に配置された第1導電層と、
前記第1導電層上に配置された絶縁層と、
前記絶縁層上および前記第1導電層上に配置された第2導電層とを備え、
前記可撓性基材は、平面視において、視認領域と、前記視認領域の外側に位置する周辺配線領域と、定められた方向における前記周辺配線領域の外側に位置する接続配線領域とを有し、
前記第1導電層は、
前記視認領域に配置された第1検出電極部と、
前記周辺配線領域に配置され且つ前記第1電極部と電気的に接続された第1引き出し配線部と、
前記接続配線領域に配置され且つ前記第1引き出し配線部と電気的に接続されたアンカー電極部とを有し、
前記第2導電層は、
前記視認領域に配置された第2検出電極部と、
前記周辺配線領域に配置され且つ前記第2検出電極部と電気的に接続された第2引き出し配線部と、
前記接続配線領域に配置され且つ前記第2引き出し配線部と電気的に接続された第2接続端子部と、
前記接続配線領域に配置され、前記第2引き出し配線部とは電気的に絶縁され且つ前記アンカー電極部を被覆して前記アンカー電極部に電気的に接続された第1接続端子部とを有し、
前記アンカー電極部は、平面視において、部分的に前記可撓性基材の表面が露出する形状パターンを形成し且つ少なくとも一部が前記絶縁層により被覆されていない露出領域を有し、
前記第1接続端子部は、前記露出領域において前記アンカー電極部を被覆し且つ前記アンカー電極部と電気的に接続され、
前記第1接続端子部により被覆されている部分の前記アンカー電極部の前記形状パターンの輪郭線は、前記定められた方向に直交する成分の長さの合計値Y1が、前記定められた方向に平行な成分の長さの合計値X1以上である、
タッチパネル用導電部材。 - 可撓性基材と、
前記可撓性基材の一方の表面上に配置された第1導電層と、
前記第1導電層上に配置された絶縁層と、
前記絶縁層上および前記第1導電層上に配置された第2導電層とを備え、
前記可撓性基材は、平面視において、視認領域と、前記視認領域の外側に位置する周辺配線領域と、定められた方向における前記周辺配線領域の外側に位置する接続配線領域とを有し、
前記第1導電層は、
前記視認領域に配置された第1検出電極部と、
前記周辺配線領域に配置され且つ前記第1電極部と電気的に接続された第1引き出し配線部と、
前記接続配線領域に配置され且つ少なくとも一部が前記第1引き出し配線部と電気的に接続されたアンカー電極部とを有し、
前記第2導電層は、
前記視認領域に配置された第2検出電極部と、
前記周辺配線領域に配置され且つ前記第2検出電極部と電気的に接続された第2引き出し配線部と、
前記接続配線領域に配置され且つ前記第2引き出し配線部と電気的に接続された第2接続端子部と、
前記接続配線領域に配置され、前記第2引き出し配線部とは電気的に絶縁され且つ前記アンカー電極部を被覆して前記アンカー電極部に電気的に接続された第1接続端子部とを有し、
前記アンカー電極部は、前記第1引き出し配線部に接続された接続アンカー部と前記接続アンカー部に対して前記定められた方向に間隔を隔てて配置された独立アンカー部とを含み且つ前記接続アンカー部の少なくとも一部と前記独立アンカー部が前記絶縁層により被覆されていない露出領域を有し、
前記第1接続端子部は、前記露出領域において前記アンカー電極部を被覆し且つ前記アンカー電極部と電気的に接続している、
タッチパネル用導電部材。 - 前記独立アンカー部は、互いに間隔を隔てて配置された複数の単位アンカー部を有する請求項2に記載のタッチパネル用導電部材。
- 平面視において、前記露出領域における前記第1接続端子部の面積に対する前記露出領域における前記アンカー電極部の面積の比率は50%以下である請求項1~3のいずれか一項に記載のタッチパネル用導電部材。
- 前記第1導電層および前記第2導電層は、同一の金属材料で形成される請求項1~4のいずれか一項に記載のタッチパネル用導電部材。
- 請求項1~5のいずれか一項に記載のタッチパネル用導電部材と、
前記第1接続端子部および前記第2接続端子部と電気的に接続された回路基板と、
粘着剤を介して前記第2導電層上に配置されたカバー部材とを備える、
タッチパネル。 - 請求項6に記載のタッチパネルと、
表示面を備え且つ前記表示面が前記可撓性基材の他方の表面上に粘着剤を介して接合された表示モジュールとを備える、
タッチパネル表示装置。 - 前記回路基板は、一端に前記第1接続端子部および前記第2接続端子部が接続され、他端が前記表示モジュールの前記表示面とは反対側の面と対向するように折り返されている請求項7に記載のタッチパネル表示装置。
- 前記接続配線領域は、その端部が前記表示モジュールの前記表示面とは反対側の面と対向するように折り返されている請求項7に記載のタッチパネル表示装置。
- 請求項1に記載のタッチパネル用導電部材を製造する方法であって、
可撓性基材の一方の表面上に、第1導電層を形成する第1工程と、
前記第1導電層上に、絶縁層を形成する第2工程と、
前記絶縁層上と前記第1導電層上に第2導電層を形成する第3工程とを有し、
前記可撓性基材は、視認領域と、前記視認領域の外側に位置する周辺配線領域と、定められた方向における前記周辺配線領域の外側に位置する接続配線領域とを有し、
前記第1導電層は、
前記視認領域に配置された第1検出電極部と、
前記周辺配線領域に配置され且つ前記第1電極部と電気的に接続された第1引き出し配線部と、
前記接続配線領域に配置され且つ前記第1引き出し配線部と電気的に接続されたアンカー電極部とを有し、
前記第2導電層は、
前記視認領域に配置された第2検出電極部と、
前記周辺配線領域に配置され且つ前記第2検出電極部と電気的に接続された第2引き出し配線部と、
前記接続配線領域に配置され且つ前記第2引き出し配線部と電気的に接続された第2接続端子部と、
前記接続配線領域に配置され、前記第2引き出し配線部とは電気的に絶縁され且つ前記アンカー電極部を被覆して前記アンカー電極部と電気的に接続された第1接続端子部とを有し、
前記アンカー電極部は、平面視において、部分的に前記可撓性基材の表面が露出する形状パターンを形成し且つ少なくとも一部が前記絶縁層により被覆されていない露出領域を有し、
前記第1接続端子部は、前記露出領域において前記アンカー電極部を被覆し且つ前記アンカー電極部と電気的に接続され、
前記第1接続端子部により被覆されている部分の前記アンカー電極部の前記形状パターンの輪郭線は、前記定められた方向に直交する成分の長さの合計値が、前記定められた方向に平行な成分の長さの合計値以上である、
タッチパネル用導電部材の製造方法。 - 請求項2に記載のタッチパネル用導電部材を製造する方法であって、
可撓性基材の一方の表面上に、第1導電層を形成する第1工程と、
前記第1導電層上に、絶縁層を形成する第2工程と、
前記絶縁層上と前記第1導電層上に第2導電層を形成する第3工程とを有し、
前記可撓性基材は、視認領域と、前記視認領域の外側に位置する周辺配線領域と、定められた方向における前記周辺配線領域の外側に位置する接続配線領域とを有し、
前記第1導電層は、
前記視認領域に配置された第1検出電極部と、
前記周辺配線領域に配置され且つ前記第1電極部と電気的に接続された第1引き出し配線部と、
前記接続配線領域に配置され且つ前記第1引き出し配線部と電気的に接続されたアンカー電極部とを有し、
前記第2導電層は、
前記視認領域に配置された第2検出電極部と、
前記周辺配線領域に配置され且つ前記第2検出電極部と電気的に接続された第2引き出し配線部と、
前記接続配線領域に配置され且つ前記第2引き出し配線部と電気的に接続された第2接続端子部と、
前記接続配線領域に配置され、前記第2引き出し配線部とは電気的に絶縁され且つ前記アンカー電極部を被覆して前記アンカー電極部に電気的に接続された第1接続端子部とを有し、
前記アンカー電極部は、前記第1引き出し配線部に接続された接続アンカー部と前記接続アンカー部に対して前記定められた方向に間隔を隔てて配置された独立アンカー部とを含み且つ前記接続アンカー部の少なくとも一部と前記独立アンカー部が前記絶縁層により被覆されていない露出領域を有し、
前記第1接続端子部は、前記露出領域において前記アンカー電極部を被覆し且つ前記アンカー電極部と電気的に接続している、
タッチパネル用導電部材の製造方法。
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JP2016170264A (ja) * | 2015-03-12 | 2016-09-23 | 株式会社ジャパンディスプレイ | 表示装置の製造方法 |
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