TW202129475A - Transparent conductive sheet, touch sensor, image display device, and manufacturing method therefor - Google Patents

Abstract

A first transparent conductive sheet has: a display area where an image display member is to be disposed; and a margin area continuing from the display area. In the display area, a base sheet, a release layer, a transfer layer, and a transparent conductive layer are arranged in said order toward one side in the thickness direction. In the margin area, the base sheet, the transfer layer, and the transparent conductive layer are arranged in said order toward the one side in the thickness direction.

Description

Transparent conductive sheet, touch sensor, image display device and manufacturing method thereof

The invention relates to a transparent conductive sheet, a touch sensor, an image display device and a manufacturing method thereof.

In the past, a touch panel sensor has been known as a transparent conductive sheet including a base sheet, a transparent electrode and a winding wiring arranged on the base sheet.

For example, a document has already proposed a touch panel sensor including a transparent conductive sheet, an optical member covering a transparent electrode, and an FPC electrically connected to a winding wire (for example, refer to Patent Document 1 below). Prior art literature Patent literature

Patent Document 1: Japanese Patent Laid-Open No. 2015-133693

The problem to be solved by the invention However, for the purpose of thinning the touch panel sensor, attempts have been made to peel off the substrate sheet from the transparent electrode and/or the wire-wound wiring.

However, at the boundary between the FPC and the optical component that are adjacent to each other, since the stress tends to concentrate on the transparent electrode and/or the wire and the transparent electrode and/or the wire is extremely thin, the boundary between the FPC and the optical member is transparent. The electrodes and/or winding wires may be easily damaged.

The present invention provides a transparent conductive sheet, a touch sensor, an image display device, and a manufacturing method thereof that are thinner and can suppress damage to the transparent conductive layer.

Means to solve the problem The present invention (1) includes a transparent conductive sheet having a display area for arranging an image display member and a marginal area continuous with the display area; in the display area, bases are sequentially arranged toward one side in the thickness direction The material sheet, the release layer, the transfer layer, and the transparent conductive layer; and in the margin area, the substrate sheet, the transfer layer, and the transparent conductive layer are sequentially arranged toward one side in the thickness direction.

In the marginal area of the transparent conductive sheet, since there is no peeling layer between the base sheet and the transfer layer, the transparent conductive layer can be reinforced by the base sheet. As a result, damage to the transparent conductive layer in the marginal area can be suppressed.

On the other hand, in the display area, the base sheet and the release layer can be peeled from the transfer layer, so that the display area can be thinned.

The present invention (2) includes a transparent conductive sheet having a display area for arranging image display members and a marginal area continuous with the display area; in the display area, the length of the display area is arranged in sequence toward the thickness direction side Strips of the substrate sheet, release layer, transfer layer and transparent conductive layer; and in the marginal area, the strips of the substrate sheet, the transfer layer and the transparent conductive layer are sequentially arranged toward one side in the thickness direction Layer; and the aforementioned marginal area is continuous in the aforementioned longitudinal direction.

In the marginal area of the transparent conductive sheet, since there is no peeling layer between the base sheet and the transfer layer, the transparent conductive layer can be reinforced by the base sheet. As a result, damage to the transparent conductive layer in the marginal area can be suppressed.

On the other hand, in the display area, the base sheet and the release layer can be peeled from the transfer layer, so that the display area can be thinned.

In addition, the continuous marginal area in the strip direction and the corresponding display area are cut into the size of the touch sensor or image display device along the strip direction. A plurality of transparent conductive sheets of the size corresponding to the sensor or the image display device. Therefore, the manufacturing efficiency of the transparent conductive sheet can be improved.

The present invention (3) includes a touch sensor having a display area for arranging image display members and a marginal area continuous with the aforementioned display area; in the aforementioned display area, transfers are sequentially arranged toward one side in the thickness direction Layer, transparent electrode, and optical member; in the marginal area, the substrate sheet, the transfer layer, the wiring wiring, and the adjacent optical member and the wiring circuit board are arranged in order toward one side in the thickness direction; When projecting in the thickness direction, the boundary between the optical member and the printed circuit board is included in the marginal area.

In the touch sensor, the boundary between the optical member and the wiring circuit board is included in the marginal area. Therefore, the base material sheet in the marginal area can reinforce the winding wiring corresponding to the boundary. As a result, damage to the winding wiring can be suppressed.

In addition, since there is no base sheet and release layer in the display area, it is possible to reduce the thickness of the display area.

The present invention (4) includes the touch sensor as described in (3), wherein the boundary is a gap separating the optical member and the printed circuit board.

If there is a gap between the optical member and the printed circuit board, the strength of the winding wiring corresponding to the gap will decrease. When the peeling layer is disposed in both the display area and the marginal area, the step of peeling the peeling layer from the transfer layer will cause a large load on the winding wiring corresponding to the gap, and the winding wiring may be easily damaged.

However, the marginal area of the touch sensor is not provided with a peeling layer, and the marginal area includes a gap. Therefore, the substrate sheet in the marginal area can reinforce the winding wiring corresponding to the gap. Therefore, damage to the winding wiring can be suppressed.

The present invention (5) includes the touch sensor described in (3) or (4), wherein the marginal area has a folded back portion that folds back to the display area.

In the touch sensor, the back-folding part can be reinforced by the base material sheet in the marginal area. Therefore, the strength of the turn-back portion is improved. As a result, even if the margin area is folded back to the display area at the folded-back portion, damage to the folded-back portion can be suppressed.

The present invention (6) includes an image display device including the touch sensor as described in any one of (3) to (5), and the image display arranged in the display area of the touch sensor member.

The image display device may be provided with a touch sensor that has suppressed damage to the transparent conductive layer.

The present invention (7) includes a method of manufacturing an image display device, which includes the following steps: preparing a transparent conductive sheet as described in (1); forming transparent electrodes and winding wires from the transparent conductive layer; and covering the aforementioned optical member Arrangement of the display area and the part of the border area adjacent to the display area, and arrange the wiring circuit board in the part of the border area that is on the opposite side to the part in the border area so as to be adjacent to the optical member; from the transfer The layer peels off the peeling layer in the display area, and removes the peeling layer in the display area and the base sheet corresponding to it; disposing the image display member in the display area after removing the peeling layer and the base sheet On the transfer layer of the material; and fold back the marginal area to the display area toward the image display member side.

In this manufacturing method, the wire-wound wiring can be reinforced with a base material sheet corresponding to the boundary between the optical member and the wiring circuit board. Therefore, damage to the winding wiring can be suppressed.

In addition, even if the image display member is arranged in the display area, the image display device corresponding to the display area can be thinned.

In addition, since the marginal area is folded back toward the image display member side to the display area, when projecting in the aforementioned thickness direction, the marginal area and the wiring circuit board arranged therein can overlap the display area. Therefore, the marginal area of the image display device can be narrowed. As a result, the area ratio of the display area of the image display device can be increased.

The present invention (8) includes the method for manufacturing an image display device as described in (7), wherein in the step of arranging the optical member and the wiring circuit board, a gap is provided between the optical member and the wiring circuit board.

In the step of arranging the optical member and the wiring circuit board, the winding wiring can be reinforced by the optical member and the base material sheet corresponding to the gap of the wiring circuit board. Therefore, damage to the winding wiring can be suppressed.

Invention effect With the transparent conductive sheet of the present invention, thickness reduction can be achieved and damage to the transparent conductive layer can be suppressed.

The transparent conductive sheet of the present invention can improve manufacturing efficiency.

With the touch sensor of the present invention, damage to the transparent conductive layer can be suppressed.

According to the image display device and the manufacturing method thereof of the present invention, the image display device can be provided with a touch sensor that has suppressed damage to the transparent conductive layer.

The form used to implement the invention <One embodiment> [First transparent conductive sheet] The first transparent conductive sheet of one embodiment of the transparent conductive sheet of the present invention will be described with reference to FIGS. 1 to 2B.

Fig. 1 is a cross-sectional view taken along line X-X of Fig. 2A to Fig. 2B. The thickness, length, etc. of each layer in Figure 1 have been appropriately exaggerated to clearly show the layer structure.

In FIGS. 2A to 2B, the marginal area 4 (described later) is drawn with hatching to clearly show its configuration and shape.

As shown in FIGS. 1 to 2A, the first transparent conductive sheet 1 has a shape extending in a plane direction orthogonal to the thickness direction. The first transparent conductive sheet 1 has, for example, a substantially rectangular shape in a plan view (synonymous with the projection surface projected in the thickness direction). The first transparent conductive sheet 1 has a display area 3 and a margin area 4 continuously.

The display area 3 is an area for arranging the image display member 9 described later. The display area 3 is the main area of the first transparent conductive sheet 1 except for the marginal area 4 to be described later. In addition, the display area 3 is an area including the sensor display portion 31 (see FIGS. 7B and 8D) of the image display device 30 described later. The area ratio of the display region 3 of the first transparent conductive sheet 1 is, for example, 80% or more, preferably 90% or more; for example, 99% or less.

The margin area 4 and the display area 3 are continuous. The margin area 4 is a blank area (non-display area) where the image display member 9 is not provided. In addition, the marginal area 4 is an area where a printed wiring board 13 (refer to FIGS. 7A and 8B) described later is joined. In detail, the marginal area 4 is an area in which an end portion (one end portion) is provided along one side when the first transparent conductive sheet 1 has a substantially rectangular shape.

As shown in FIG. 1, the first transparent conductive sheet 1 includes a base sheet 5, a release layer 6, a transfer layer 7, and a transparent conductive layer 8 in this order toward one side in the thickness direction. The first transparent conductive sheet 1 may include only the base sheet 5, the release layer 6, the transfer layer 7, and the transparent conductive layer 8, or it may be sandwiched between the transfer layer 7 and the transparent conductive layer 8. The functional layer (optical adjustment layer) and so on. The configuration of the functional layer is not limited to the above.

The base sheet 5 forms the other surface of the first transparent conductive sheet 1 in the thickness direction. The base sheet 5 has the same outer shape as the first transparent conductive sheet 1.

The material of the base sheet 5 includes, for example, a resin (including a polymer). Examples of the resin include polyester resins such as polyethylene terephthalate (PET), polybutylene terephthalate, and polyethylene naphthalate, such as (meth)acrylic resins such as polymethacrylate. (Acrylic resin and/or methacrylic resin), such as polyethylene, polypropylene, cycloolefin polymer (COP) and other olefin resins, such as polycarbonate resins, such as polyether sulfonic acid resins, such as polyarylate resins, such as Melamine resins, such as polyamide resins, such as polyimide resins, such as cellulose resins, such as polystyrene resins, such as norbornene resins, and the like. From the viewpoint of strength and bending characteristics, a polyester resin is preferable, and PET is preferable.

The tensile strength of the substrate sheet 5 at 25°C is, for example, 10 MPa or more, and preferably 25 MPa or more, more preferably 35 MPa or more, and 100 MPa or less. As long as the tensile strength of the base sheet 5 is at least the above lower limit, the transfer layer 7 and the transparent conductive layer 8 (winding wiring 12) corresponding to the gap 19 described later can be sufficiently reinforced. The tensile strength is determined in accordance with JIS R7608 (2004). In addition, the tensile strength of the following members can also be obtained by the same method as above.

The yield strain of the substrate sheet 5 at 25° C. is, for example, 0.5% or more, preferably 1% or more, more preferably 2% or more; for example, 20% or less. As long as the yield strain of the base sheet 5 is greater than or equal to the above-mentioned lower limit, the folded-back portion 21 described later can be reliably folded. Yield strain can be obtained according to JIS K7161 (2012). In addition, the yield strain of the following components can also be obtained by the same method as described above.

The thickness of the substrate sheet 5 is, for example, 1 μm or more, preferably 10 μm or more; for example, it is 100 μm or less, preferably 75 μm or less.

The release layer 6 is arranged on one surface of the base sheet 5 in the display area 3 in the thickness direction. Specifically, the release layer 6 contacts the entire surface of one surface in the thickness direction of the base sheet 5 of the display area 3.

In addition, in the first transparent conductive sheet 1, the release layer 6 (and the base sheet 5) is in contact with (adhered to) the transfer layer 7.

That is, the first transparent conductive sheet 1 includes the peeling layer 6 in the display area 3 and does not include the peeling layer 6 in the marginal area 4.

Examples of the material of the release layer 6 include fluororesin, silicone resin, and oil.

The thickness of the peeling layer 6 is, for example, 0.01 μm or more, preferably 0.5 μm or more; for example, it is 10 μm or less, preferably 5 μm or less.

The peeling force of the peeling layer 6 to the base sheet 5 can be adjusted to be higher than the peeling force of the peeling layer 6 to the transfer layer 7.

The transfer layer 7 is a layer for transferring the transparent electrode 11 and the winding wire 12 (see FIG. 8A) formed of the transparent conductive layer 8 described later to the optical member 35 (see FIG. 8B). In addition, the transfer layer 7 is also a layer that transfers itself to the optical member 35. In addition, the transfer layer 7 can function as a hard coat layer.

The transfer layer 7 is arranged on one surface in the thickness direction of the peeling layer 6 in the display area 3 and one surface in the thickness direction of the base material sheet 5 in the margin area 4. The transfer layer 7 contacts one surface in the thickness direction of the release layer 6 in the display area 3 and one surface in the thickness direction of the base material sheet 5 in the margin area 4.

In addition, the transfer layer 7 covers one side end surface of the peeling layer 6. In addition, the other surface in the thickness direction of the transfer layer 7 in the margin area 4 is the same plane as the other surface in the thickness direction of the release layer 6 in the display area 3. In addition, one surface in the thickness direction of the transfer layer 7 is a flat surface along the surface direction.

The material of the transfer layer 7 can be, for example, a transparent composition containing a transparent resin such as acrylic resin. The resin composition is described in detail in, for example, Japanese Patent Application Laid-Open No. 2018-192710 and the like. The yield strain of the transfer layer 7 at 25° C. is, for example, 0.5% or more, preferably 1% or more, more preferably 2% or more; for example, 20% or less.

The thickness of the transfer layer 7 is, for example, 0.1 μm or more, preferably 0.5 μm or more; for example, it is 50 μm or less, preferably 25 μm or less, and more preferably 10 μm or less. The ratio of the thickness of the transfer layer 7 to the base sheet 5 is, for example, 0.5 or less, preferably 0.1 or less, more preferably 0.01 or less; for example, 0.0001 or more.

The transparent conductive layer 8 forms one surface of the first transparent conductive sheet 1 in the thickness direction. The transparent conductive layer 8 is disposed on one surface of the transfer layer 7 in the thickness direction. Specifically, the transparent conductive layer 8 contacts the entire surface of the transfer layer 7 in the thickness direction. In addition, the transparent conductive layer 8 is not patterned like the transparent electrode 11 and the wire wiring 12 (see FIG. 8A) in the touch sensor 20 described later, that is, the entire surface of the other side of the transparent conductive layer 8 in the thickness direction It is in contact with the entire surface of the transfer layer 7 in the thickness direction.

Examples of the material of the transparent conductive layer 8 include metal oxides, metal nanowires, and the like. The metal oxide may include, for example, at least one metal selected from the group consisting of In, Sn, Zn, Ga, Sb, Ti, Si, Zr, Mg, Al, Au, Ag, Cu, Pd, and W The metal oxides are preferably indium-containing oxides such as indium tin oxide (ITO: Indium Tin Oxide), antimony-containing tin oxide, and the like. The metal oxide can also be further doped with metal atoms shown in the above group as required. The transparent conductive layer 8 may also be a conductive pattern made of metal oxide or metal. The shape of the conductive pattern may be striped, square, grid, etc., but is not limited to these.

The surface resistance of the transparent conductive layer 8 is, for example, 150Ω/□ or less, for example, 1Ω/□ or more.

The total light transmittance of the transparent conductive layer 8 is, for example, 80% or more, preferably 85% or more, more preferably 90% or more; for example, 100% or less.

The thickness of the transparent conductive layer 8 is, for example, 10 nm or more; and, for example, is 200 nm or less, preferably 100 nm or less, and more preferably 75 nm or less. The ratio of the thickness of the transparent conductive layer 8 to the thickness of the base sheet 5 is, for example, 10 ^-2 or less, preferably 10 ^-3 or less, more preferably 10 ^-4 or less; for example, 10 ^-6 or more.

In addition, the ratio of the total thickness of the transfer layer 7 and the transparent conductive layer 8 to the thickness of the base sheet 5 is, for example, 0.5 or less, preferably 0.1 or less, more preferably 0.01 or less; for example, 0.0001 or more.

Then, in the display area 3 of the first transparent conductive sheet 1, the base sheet 5, the release layer 6, the transfer layer 7, and the transparent conductive layer 8 are arranged in this order toward one side in the thickness direction. Specifically, the display area 3 is composed of a base sheet 5, a release layer 6 arranged on one side in the thickness direction, a transfer layer 7 arranged on one side in the thickness direction, and a transparent conductive layer 8 arranged on one side in the thickness direction. constitute. That is, in the display area 3, the release layer 6 is sandwiched between the base sheet 5 and the transfer layer 7.

In addition, in the marginal region 4, the base sheet 5, the transfer layer 7, and the transparent conductive layer 8 are arranged in this order toward one side in the thickness direction. Specifically, the marginal region 4 is composed of a base sheet 5, a transfer layer 7 arranged on one surface in the thickness direction, and a transparent conductive layer 8 arranged on one surface in the thickness direction. That is, in the marginal area 4, the release layer 6 is not sandwiched between the base sheet 5 and the transfer layer 7, that is, the base sheet 5 (one side in the thickness direction) and the transfer layer 7 (the thickness The other side of the direction) touch each other. In short, in the first transparent conductive sheet 1, the marginal region 4 is a region where the peeling layer 6 is not arranged.

In addition, the shape of each of the display area 3 and the marginal area 4 of the first transparent conductive sheet 1 is not particularly limited. For example, as shown in FIG. 2A, the display area 3 and the margin area 4 each have a substantially rectangular shape in plan view. Specifically, the display area 3 and the margin area 4 have a substantially rectangular shape in plan view with one side in common. In detail, all of one end edge of the display area 3 is shared by all of the other end edge of the marginal area 4.

Alternatively, as shown in FIG. 2B, a part of one end edge of the display area 3 may also be shared by all the other end edges of the margin area 4. At this time, the marginal area 4 has a shape that protrudes outward from a part of one end edge of the display area 3, for example. Specifically, the first transparent conductive sheet 1 has a substantially L-shaped shape (crocheted needle shape) in a plan view.

In order to obtain this first transparent conductive sheet 1, first, a base sheet 5 is prepared, and then a release layer 6, a transfer layer 7, and a transparent conductive layer 8 are sequentially laminated thereon.

For example, the release layer 6 is formed only on the display area 3 on one side of the base sheet 5 in the thickness direction by coating (screen printing or the like). Then, for example, the paint of the resin composition is applied to the thickness direction of the release layer 6 in the display area 3 and the thickness direction of the base material sheet 5 in the margin area 4, and then heat and dry to form a transfer Layer 7. Then, the transparent conductive layer 8 is formed on the entire surface of the transfer layer 7 in the thickness direction by, for example, sputtering or the like.

Thereby, the first transparent conductive sheet 1 can be produced, which has the display area 3 corresponding to the size of the image display member 9 (refer to FIG. 8C).

In addition, the first transparent conductive sheet 1 shown in FIG. 2A is manufactured, and then the outer shape processing is performed, specifically, a part of the marginal area 4 (cutting process) is removed, and a portion remains, and the manufacturing shown in FIG. 2B The first transparent conductive sheet 1 shown.

The size of the first transparent conductive sheet 1 shown in FIGS. 2A to 2B can be appropriately set according to the size of the image display member 9 (see FIG. 8C) arranged in the display area 3, for example.

The ratio of the planar area of the marginal region 4 in the planar area of the first transparent conductive sheet 1 is, for example, 20% or less, preferably 10% or less, more preferably 5% or less; for example, 0.1% or more.

The thickness of the first transparent conductive sheet 1 is the total thickness of the base sheet 5, the release layer 6, the transfer layer 7, and the transparent conductive layer 8. Specifically, it is 10 µm or more; and, for example, 2000 µm or less. It is 1000 µm or less, more preferably 500 µm or less.

In addition, the first transparent conductive sheet 1 has not yet provided the optical member 35 and the printed wiring board 13 (see FIG. 8B ), and is not the touch sensor 20 provided with the optical member 35 and the printed wiring board 13. In addition, the first transparent conductive sheet 1 has not yet provided the image display member 9 (see FIG. 8C ), nor has the image display device 30 provided with the image display member 9. The first transparent conductive sheet 1 is used to manufacture an intermediate part (intermediate member) of the touch sensor 20 or the image display device 30, and is an industrially available device.

[Second transparent conductive sheet] As shown in FIGS. 3A to 6, it is also possible to cut out a plurality of first transparent conductive sheets 1 from the second transparent conductive sheet 2 having the shape of a long sheet (refer to the thick dotted line) to obtain A plurality of first transparent conductive sheets 1.

For example, the second transparent conductive sheet 2 is wound into a roll shape. The second transparent conductive sheet 2 can be manufactured by the roll to roll method. It is wound around the base material sheet 5 between two rollers, and is transported in the longitudinal direction between the rollers. The peeling layer 6, the transfer layer 7, and the transparent conductive layer 8 are sequentially formed. The length in the longitudinal direction of the second transparent conductive sheet 2 is, for example, 5 m or more, preferably 10 m or more, more preferably 100 m or more, for example, 10,000 m or less.

As shown in FIG. 3B, the second transparent conductive sheet 2 includes the aforementioned base sheet 5, a release layer 6, a transfer layer 7, and a transparent conductive layer 8.

The second transparent conductive sheet 2 shown in FIGS. 3A to 3B has, for example, two display areas 3 arranged on both sides of the width direction orthogonal to the longitudinal direction and the thickness direction; and A marginal area 4 in between. Two display areas 3 and a marginal area 4 are each continuous in the longitudinal direction.

Therefore, on both sides (display area 3) of the second transparent conductive sheet 2 in the width direction, the release layer 6, the transfer layer 7, and the transparent conductive layer 8 are sequentially laminated on the long base sheet 5 . On the other hand, in the middle portion (margin region 4) of the second transparent conductive sheet 2 in the width direction, the transfer layer 7 and the transparent conductive layer 8 are laminated on the base sheet 5 in this order.

To prepare a plurality of first transparent conductive sheets 1 from one second transparent conductive sheet 2, as shown by the dashed line of thickness 1 in FIG. 3A, cut one of the marginal regions 4 along the longitudinal direction. In the middle part of the width direction, two display areas 3 and one margin area 4 are cut along the width direction. In this modified example, as shown in FIG. 3B, two first transparent conductive sheets 1 can be produced from one second transparent conductive sheet 2 in a cross-sectional view in the width direction.

The second transparent conductive sheet 2 shown in FIG. 4 has three marginal regions 4 arranged at both ends in the width direction and the center in the width direction, and two display regions 3. 3 arranged between them The marginal regions 4 are each continuous in the longitudinal direction. The two display areas 3 are each continuous in the longitudinal direction.

In this modification, in a cross-sectional view in the width direction (not shown), four first transparent conductive sheets 1 can be produced from one second transparent conductive sheet 2.

In addition, although in one embodiment, the widthwise middle portion of the marginal area 4 is cut, for example, as shown in FIG. 5A, the boundary between the display area 3 and the marginal area 4 may also be cut.

Moreover, as shown in FIG. 5B, instead of cutting the second transparent conductive sheet 2 in the longitudinal direction, only the second transparent conductive sheet 2 may be cut in the width direction.

In addition, as shown in FIG. 6, a plurality of marginal regions 4 may be arranged in a striped pattern at intervals in the longitudinal direction. At this time, the display area 3 is arranged between the plurality of marginal areas 4. [Manufacturing method of touch sensor, image display device, etc.] Next, a method of manufacturing a touch sensor from the first transparent conductive sheet shown in FIG. 2B and a method of manufacturing an image display device from the touch sensor will be described with reference to FIGS. 1, 2B, and 7A to 8D. .

The manufacturing method of the image display device 30 includes the following steps: preparing the first transparent conductive sheet 1; forming the transparent electrode 11 and the winding wiring 12; arranging the printed wiring board 13 as an example of the optical member 35 and the wiring circuit board; and peeling off The layer 6 is peeled from the transfer layer 7; the image display member 9 is arranged in the display area 3; and the margin area 4 is folded back.

In the manufacturing method of the image display device 30, first, the first transparent conductive sheet 1 shown in FIGS. 1 and 2B is prepared by the above-mentioned method.

Next, in the manufacturing method of the image display device 30, as shown in FIG. 8A, the transparent electrode 11 and the winding wiring 12 are formed from the transparent conductive layer 8. For example, the transparent conductive layer 8 is patterned into the transparent electrode 11 and the winding wire 12 by etching or the like.

The transparent electrode 11 is formed in an area closer to the inner side than the peripheral end of the display area 3. The transparent electrode 11 forms a pattern in the touch sensor 20 that can detect the position and movement (movement of the surface direction) of the user's finger. For example, a plurality of transparent electrodes 11 are arranged at intervals in the plane direction.

The winding wire 12 is formed at the peripheral end of the display area 3 and the margin area 4. One end of the winding wire 12 is connected to the ends (not shown) of the plurality of transparent electrodes 11, and the other end has a pattern that can be connected to a terminal 26 (described later) of the printed wiring board 13 described later. The winding wiring 12 is an electrical wiring electrically connected to the transparent electrode 11 and the printed wiring board 13.

In addition, the winding wiring 12 may be formed of a transparent wiring portion and a metal wiring portion 41, and the transparent wiring portion is composed of a transparent conductive layer 8, and the metal wiring portion 41 is composed of a metal layer 40 laminated on the transparent wiring portion. Posed (refer to the imaginary line in Figure 8A). At this time, first, the metal layer 40 is laminated on one of the surfaces in the thickness direction of the transparent conductive layer 8 in the peripheral end and the margin area of the display area 3, and the metal layer 40 and the corresponding transparent conductive layer 8 are etched to form a winding Wire 12.

Next, in the manufacturing method of the image display device 30, as shown in FIGS. 7A and 8B, the optical member 35 is arranged so as to cover the base end portion 24 of the display area 3 and the margin area 4. In addition, the printed wiring board 13 is arranged in the free end portion 25 of the margin area 4.

The base end portion 24 is a portion (area) adjacent to the display area 3 in the margin area 4.

The optical member 35 has a shape corresponding to the base end portion 24 of the display area 3 and the margin area 4. The optical member 35 has a shape that overlaps with the base end portion 24 of the display area 3 and the margin area 4 but does not overlap with the free end portion 25 in a plan view.

For example, the optical member 35 includes a first adhesive layer 14, a polarizing plate 15, a second adhesive layer 16, a concealing layer 18, and a transparent protective member 17 in this order toward one side in the thickness direction.

The first adhesive layer 14 has the same outer shape as the optical member 35 in a plan view. The first adhesive layer 14 covers the transparent electrode 11 and the winding wire 12 on one side in the thickness direction of the transfer layer 7. Specifically, the first adhesive layer 14 is disposed on the transparent electrode 11, the side surface and the thickness direction surface of the winding wire 12, and the thickness direction surface of the transfer layer 7 exposed from the transparent electrode 11 and the winding wire 12. The material of the first adhesive layer 14 includes a transparent adhesive (specifically, a pressure-sensitive adhesive). The total light transmittance of the first adhesive layer 14 is, for example, 80% or more, preferably 85% or more, more preferably 90% or more; for example, 100% or less. The thickness of the first adhesive layer 1 is, for example, 5 μm or more, and for example, 100 μm or less.

The polarizing plate 15 has a shape extending in the surface direction. The polarizing plate 15 has the same outer shape as the first adhesive layer 14 in a plan view. The polarizing plate 15 is arranged on one surface in the thickness direction of the first adhesive layer 14. Specifically, the polarizing plate 15 contacts the entire surface of the first adhesive layer 14 in the thickness direction. The total light transmittance of the polarizer 15 is, for example, 30% or more, preferably 35% or more, more preferably 40% or more; for example, 50% or less. The thickness of the polarizing plate 15 is, for example, 1 μm or more, for example, 100 μm or less.

The second adhesive layer 16 has an outer shape corresponding to the polarizing plate 15 in a plan view, and specifically has a size slightly smaller than that of the polarizing plate 15. Specifically, one end surface of the second adhesive layer 16 of the base end portion 24 is arranged closer to the display area 3 side (retreated) than one end surface of the polarizing plate 15 of the base end portion 24. In addition, the second adhesive layer 16 of the base end portion 24 is not included in the folded-back portion 21 described later (refer to the dotted line of thickness 1 in FIG. 8C).

The second adhesive layer 16 is arranged on one surface of the polarizing plate 15 in the thickness direction. The second adhesive layer 16 contacts one surface of the polarizing plate 15 in the thickness direction. The material, total light transmittance, and thickness of the second adhesive layer 16 are the same as those of the first adhesive layer 14 described above.

The transparent protective member 17 has a shape extending in the surface direction. The transparent protective member 17 is arranged on one surface in the thickness direction of the second adhesive layer 16. The transparent protective member 17 contacts one surface of the second adhesive layer 16 in the thickness direction. The outer peripheral edge of the transparent protective member 17 has a size slightly smaller than the size of the polarizing plate 15 in a plan view. The transparent protective member 17 is not particularly limited as long as it has transparency and excellent mechanical strength, and examples thereof include a glass plate, a resin plate (for example, a transparent polyimide, an acrylic plate, etc.). The total light transmittance of the transparent protective member 17 is, for example, 80% or more, preferably 85% or more, more preferably 90% or more; and, for example, 100% or less. The thickness of the transparent protective member 17 is, for example, 10 μm or more and, for example, 200 μm or less.

The shielding layer 18 has a pattern including the winding wiring 12 in a plan view. That is, the shielding layer 18 is disposed on the peripheral end of the display area 3 and the marginal area 4. In addition, the shielding layer 18 is formed on the surface of the transparent protective member 17 on the second adhesive layer 16 side. The shielding layer 18 is printed on the above-mentioned surface of the transparent protective member 17. The material of the shielding layer 18 may include, for example, a composition containing a black component and resin. The shielding layer 18 is a layer in the touch sensor 20 that prevents the user from viewing the winding wiring 12 from one side in the thickness direction. The total light transmittance of the shielding layer 18 is, for example, 10% or less, preferably 5% or less; for example, 0.0001% or more. The thickness of the shielding layer 18 is, for example, 0.5 μm or more, and for example, 50 μm or less.

The mechanical strength of the optical member 35 is relatively high.

As shown in FIG. 8B, in the marginal area 4, a part of the base sheet 5, the transfer layer 7, the winding wire 12, and the optical member 35 (specifically, the first adhesive layer 14 and the polarizing plate 15) The overlapping portion in the thickness direction is the folded-back portion 21 (described later) that allows the free end portion 25 to be folded back to the display area 3.

As shown in FIGS. 7A and 8B, the printed wiring board 13 has a substantially rectangular plate shape elongated in the direction in which the marginal region 4 protrudes from the display region 3 (synonymous with the adjacent direction of the display region 3 and the marginal region 4). The printed wiring board 13 is provided with the terminal 26, which is arrange|positioned under the one end part of a longitudinal direction. The printed wiring board 13 is joined to the free end portion 25 of the marginal area 4 in such a manner that the terminal 26 and the other end of the winding wire 12 are electrically connected.

There is a gap 19 between the printed wiring board 13 and the optical member 35.

When the printed wiring board 13 and the optical member 35 are arranged in the marginal area 4 so as to be adjacent to each other, a gap 19 is inevitably formed.

The gap 19 is an example of the boundary between the printed wiring board 13 and the optical member 35. The gap 19 is formed between the side end surface of the optical member 35 and the side end surface of the printed wiring board 13. As shown in FIG. 7A, the gap 19 extends in a direction orthogonal to the protruding direction and the thickness direction of the marginal area 4 (a direction along a side shared by the display area 3 and the marginal area 4).

In a plan view, although the strength of the transfer layer 7 and the winding wiring 12 overlapping the gap 19 is low, they can be reinforced by the base material sheet 5 overlapping the gap 19. The tensile strength of the portion of the marginal region 4 corresponding to the gap 19 is, for example, 10 MPa or more, preferably 25 MPa or more, more preferably 35 MPa or more, and 100 MPa or less.

The width of the gap 19 is the distance between the optical member 35 and the printed wiring board 13, and is not particularly limited. The width of the gap 19 is, for example, 100 μm or more, even more 500 μm; for example, it is 10,000 μm or less.

The tensile strength of the printed wiring board 13 is, for example, 10 MPa or more, preferably 25 MPa or more, more preferably 35 MPa or more, and 100 MPa or less.

Next, in the method of manufacturing the image display device 30, as shown by the imaginary line in FIG. 8B, the peeling layer 6 of the display area 3 is peeled from the transfer layer 7, and the peeling layer 6 of the display area 3 and its corresponding Substrate sheet 5.

Specifically, for example, grab the other end of the peeling layer 6 of the display area 3 and move it to the other side of the thickness direction (or the side of the margin area 4), and at the same time, the peeling layer 6 is moved along with the base material of the display area 3. The sheet 5 peeled off.

Next, a cut 27 is formed in the portion of the base sheet 5 corresponding to one end edge of the release layer 6. For example, a cutting device 28 such as a cutter is used to form a cut 27 in the peeling layer 6.

After that, the base sheet 5 of the display area 3 is cut (separated) from the base sheet 5 of the margin area 4 along the cut 27.

In addition, after the cut 27 is formed in the base sheet 5, the base sheet 5 and the peeling layer 6 in the display area 3 may be removed.

By the removal (peeling) of the base material sheet 5 and the release layer 6, the other side in the thickness direction of the transfer layer 7 of the display area 3 is exposed on the other side in the thickness direction.

Thereby, a touch sensor 20 can be obtained, which has a display area 3 and a margin area 4, and the display area 3 is sequentially arranged with a transfer layer 7, a transparent electrode 11 and an optical member 35 toward one side in the thickness direction. In the marginal area 4, the base sheet 5, the transfer layer 7, the winding wiring 12, the optical member 35, and the printed wiring board 13 are sequentially arranged toward one side in the thickness direction. The marginal area 4 includes a gap 19.

In addition, in the display area 3 of the touch sensor 20, the image display member 9 has not been disposed yet (see FIG. 8C). Therefore, the touch sensor 20 is used to manufacture an intermediate part (intermediate member) of the image display device 30 provided with the image display member 9. The touch sensor 20 is also a device available in the industry.

Next, as shown in FIG. 8C, in the method of manufacturing the image display device 30, the image display member 9 is arranged on the other side of the transfer layer 7 in the thickness direction, and the base material of the display area 3 of the touch sensor 20 has been removed. Sheet 5 and peeling layer 6.

The image display member 9 has the same shape and size as the display area 3 (the peeling layer 6) in a plan view.

Specifically, the image display member 9 includes, for example, an organic EL (electroluminescence) display device (OLED), a liquid crystal display device (LCD), and the like. In addition, the image display member 9 may also include a conventional adhesive layer 51 disposed on one side of the above-mentioned device in the thickness direction. The adhesive layer 51 is the transfer layer 7 that pressure-sensitively adheres the above-mentioned device to the display area 3.

In addition, one end surface of the image display member 9 is in contact with an end surface on the upstream side of the base sheet 5 in the margin area 4 in the projecting direction.

The thickness of the image display member 9 is, for example, 1 μm or more, and for example, 100 μm or less.

Thereby, an image display device 30 can be manufactured, which is provided with: a touch sensor 20 having a display area 3 with a removed substrate sheet 5 and a peeling layer 6, arranged on the removed substrate sheet 5 and peeling The image display member 9 of the display area 3 of the layer 6. In addition, the image display device 30, as the image display device 30 that can be folded by the folding portion 21, is also an industrially available device.

Next, in the manufacturing method of the image display device 30, as shown by the arrows in FIGS. 7B and 8C and FIG. 8D, the marginal area 4 is folded back toward the image display member 9 against the display area 3.

Specifically, the free end portion 25 of the marginal region 4 is folded back toward the image display member 9 in such a manner that the folded-back portion 21 is bent. Specifically, the folded-back portion 21 is bent so that one surface of the polarizing plate 15 is convex in the thickness direction and the other surface of the base material sheet 5 in the marginal region 4 is concave in the thickness direction.

Furthermore, the free end portion 25 is folded back together with the printed wiring board 13. Thereby, the printed wiring board 13 partially overlaps the image display member 9 on the projection surface projected in the thickness direction. That is, the printed wiring board 13 with an interval on the side of the optical member 35 moves to the other side in the thickness direction of the image display member 9 due to the above-mentioned bending. Although the image display member 9 after bending can be seen through the bottom view, it cannot be seen through the top view.

Thereby, the image display device 30 can be manufactured, which includes the touch sensor 20 and the image display member 9, and the free end portion 25 and the printed wiring board 13 are folded back by the folded portion 21.

The image display device 30 includes a sensor display portion 31 and a frame portion 32 in a plan view.

The sensor display portion 31 is included in the display area 3, specifically an area corresponding to the transparent electrode 11. In the sensor display portion 31, while detecting the movement of the user's finger, an image based on the driving of the image display member 9 is displayed.

The edge area 32 is an area corresponding to the peripheral end of the display area 3 and the margin area 4 after bending, specifically, the area corresponding to the shielding layer 18 (the winding wiring 12). In the frame portion 32, the electrical signal detected by the transparent electrode 11 is transmitted to the printed wiring board 13 through the winding wiring 12 shielded by the shielding layer 18.

In this image display device 30, since the marginal region 4 is bent, the plane area ratio of the frame portion 32 of the image display device 30 can be set to be small. Specifically, the plane area ratio of the frame portion 32 of the image display device 30 is, for example, 10% or less, preferably 5% or less, more preferably 3% or less, more preferably 1% or less; and for example, 0.01% or more.

The image display device 30 is housed (installed) in a frame not shown in the figure in a bent state, and can be used as a tablet terminal, a smart phone, etc., for example.

Then, as shown in FIG. 8A, in the marginal region 4 of the first transparent conductive sheet 1, since there is no release layer 6 between the base sheet 5 and the transfer layer 7, the base sheet 5 can be used Reinforce the transparent conductive layer 8. As a result, damage to the transparent conductive layer 8 (winding wiring 12) in the marginal region 4 can be suppressed.

On the other hand, in the display area 3, the base sheet 5 and the release layer 6 can be peeled from the transfer layer 7, so that the display area 3 can be thinned. The display area 3 can be made thinner.

And, as shown in FIGS. 3A to 5A, in the second transparent conductive sheet 2, the marginal area 4 that is continuous in the longitudinal direction and the display area 3 corresponding to it will be cut into touches along the longitudinal direction. By controlling the size of the sensor 20 or the image display device 30, a plurality of first transparent conductive sheets having the size (width direction length) corresponding to the touch sensor 20 or the image display device 30 can be easily manufactured 1. Therefore, the production efficiency of the first transparent conductive sheet 1 can be improved.

In contrast, the marginal area 4 of the modified example shown in FIG. 6A is not continuous in the longitudinal direction. Therefore, from the viewpoint of improving manufacturing efficiency, one embodiment of the first transparent conductive sheet 1 and the first transparent conductive sheet 1 shown in FIGS. 3 to 5B can be cut along the longitudinal direction. The modification shown in 6A is suitable.

Moreover, as shown in FIG. 8B, in the touch sensor 20, the gap 19 between the optical member 35 and the printed wiring board 13 is included in the display area 3.

If the gap 19 between the optical member 35 and the printed wiring board 13 exists, the strength of the winding wiring 12 corresponding to the gap 19 will be reduced. When the peeling layer 6 is disposed in both the display area 3 and the marginal area 4, the step of peeling the peeling layer 6 from the transfer layer 7 places a great load on the winding wiring 12 corresponding to the gap 19, and The winding wire 12 is easily damaged. In particular, when the size of the gap 19 is larger, the above-mentioned damage of the winding wiring 12 is more likely to occur.

However, the marginal area 4 of the touch sensor 20 is not provided with the peeling layer 6, and the marginal area 4 includes a gap 19. Therefore, the base material sheet 5 in the marginal area 4 can reinforce the winding wiring 12 (transparent conductive layer 8) corresponding to the gap 19. Therefore, even if the size of the gap 19 is large, damage to the winding wiring 12 (transparent conductive layer 8) of the gap 19 can be suppressed.

As shown in FIG. 8C, in the touch sensor 20, the base material sheet 5 can be used to reinforce the folded-back portion 21 in the marginal area 4. Therefore, the strength of the folded-back portion 21 can be improved. As a result, as shown in FIG. 8D, even if the free end portion 25 of the marginal region 4 is folded back to the display area 3 at the folded-back portion 21, damage to the folded-back portion 21 can be suppressed.

Moreover, when the free end portion 25 of the marginal area 4 is folded back to the display area 3 and projected in the aforementioned thickness direction, the printed wiring board 13 and the free end 25 of the marginal area 4 can be arranged to overlap the display area 3. Therefore, the planar area of the marginal area 4 of the touch sensor 20 can be reduced. As a result, the image display device 30 having the narrowed marginal region 4 can be manufactured.

The image display device 30 may include a touch sensor 20 that has suppressed damage to the transparent conductive layer 8.

In the manufacturing method of the image display device 30, as shown in FIGS. 7A and 8B, the gap 19 is provided in the marginal area 4 in the step of arranging the optical member 35 and the printed wiring board 13. Therefore, even if the peeling layer 6 of the display area 3 is peeled from the transfer layer 7, the reinforcement of the base sheet 5 of the margin area 4 can suppress the damage of the winding wiring 12.

Furthermore, even if the image display member 9 is arranged in the display area 3, the image display device 30 corresponding to the display area 3 can be made thinner.

In addition, since the free end portion 25 of the marginal area 4 is folded back toward the display area 3 toward the image display member 9, when projecting in the aforementioned thickness direction, the printed wiring board 13 and the marginal area 4 can be arranged The free end portion 25 of the printed wiring board 13 overlaps the display area 3. The plane area of the marginal area 4 of the image display device 30 can be reduced. As a result, the marginal area 4 (frame portion 32) can be narrowed in the image display device 30.

<Modifications> In each of the following modifications, the same reference numerals are attached to the same members and steps as in the above-mentioned embodiment, and detailed descriptions thereof are omitted. In addition, each modification example can exhibit the same effect as that of the first embodiment, except for the special description. In addition, an embodiment and its modification examples can be combined as appropriate.

In one embodiment, when the polarizing plate 15 is included in the folded-back portion 21 in the optical member 35 and the base end portion 24 is folded back, the polarizing plate 15 is bent.

In this modification, as shown in FIG. 9C, the polarizing plate 15 is not included in the folded-back portion 21, and the polarizing plate 15 is not bent when the base end portion 24 is folded back, and only the base material 5 and the transfer layer 7 and the winding wire 12 are bent.

As shown in FIG. 9A, one end surface of the first adhesive layer 14, the polarizing plate 15, and the second adhesive layer 16 in the marginal area 4 are in the same plane.

The folded-back portion 21 includes the base sheet 5, the transfer layer 7 and the winding wiring 12, but does not include the optical member 35. It is preferable that the folded-back portion 21 only includes the base material sheet 5, the transfer layer 7 and the winding wiring 12.

In one embodiment, a gap 19 is provided between the optical member 35 and the printed wiring board 13. However, for example, as shown in FIG. 10A, these may be closely adhered (contacted without gaps). As shown in FIG. 10A, the boundary 29 of the optical member 35 and the printed wiring board 13 is included in the marginal area 4.

In the touch sensor 20 shown in FIG. 10A and the image display device 30 shown in FIG. 10C, the boundary 29 between the optical member 35 and the printed wiring board 13 is included in the marginal area 4. Therefore, the base sheet 5 of the marginal area 4 can reinforce the winding wiring 12 corresponding to the boundary 29. As a result, damage to the winding wire 12 can be suppressed.

In addition, although the above-mentioned invention is provided as an exemplary embodiment of the present invention, it is only a mere exemplification and is not interpreted as a limitation. Modifications of the present invention that are obvious to those skilled in the art in this technical field are included in the scope of the following description.

Industrial availability The transparent conductive sheet is equipped in the image display device.

1: The first transparent conductive sheet 2: The second transparent conductive sheet 3: display area 4: marginal area 5: Substrate sheet 6: peeling layer 7: Transfer layer 8: Transparent conductive layer 9: Image display component 11: Transparent electrode 12: Winding wiring 13: Printed wiring board 14: The first adhesive layer 15: Polarizing plate 16: The second adhesive layer 17: Transparent protective member 18: hidden layer 19: gap 20: Touch sensor 21: Turn-back section 24: basal part 25: Free end part 26: Terminal 27: incision 28: Cutting device 29: Border 30: Video display device 31: Sensor display 32: Frame part 35: Optical components

Fig. 1 is a cross-sectional view of an embodiment of the transparent conductive sheet of the present invention. In Fig. 2, Figs. 2A~2B are top views of the transparent conductive sheet of Fig. 1; Fig. 2A shows a state shared by all the edges of one end of the region by all the other edges of the marginal region, and Fig. 2B is the display region A state in which a part of one edge is shared by all the other edges of the marginal area. In Fig. 3, Figs. 3A to 3B are diagrams of the second transparent conductive sheet used to make a plurality of first transparent conductive sheets; Fig. 3A is a top view, and Fig. 3B is a cross-section taken along line YY in Fig. 3A picture. Fig. 4 is a cross-sectional view of a modification of the second transparent conductive sheet shown in Fig. 3A (a modification in which three margin regions and two display regions are provided). In Fig. 5, Figs. 5A to 5B are top views of a modification of the second transparent conductive sheet shown in Fig. 3A; Fig. 5A is a state in which the first transparent conductive sheet is cut along the boundary between the display area and the marginal area In this way, FIG. 5B is a state in which only the first transparent conductive sheet is cut in the width direction. Fig. 6 is a cross-sectional view of a modification of the second transparent conductive sheet shown in Fig. 3A (a modification in which the marginal area is striped in the longitudinal direction). In Fig. 7, Figs. 7A-7B are top views of a touch sensor and an image display device made using the first transparent conductive sheet shown in Fig. 2B; Fig. 7A shows the touch sensor, and Fig. 7B shows Image display device. In Fig. 8, Figs. 8A to 8D are diagrams of the manufacturing steps of the image display device shown in Fig. 7B; Fig. 8A shows the steps of forming transparent electrodes and winding wiring from the transparent conductive layer, and Fig. 8B shows the arrangement of optical members with a gap therebetween. 8C shows the step of arranging the image display member, and FIG. 8D shows the step of bending the free end portion of the display area. In Fig. 9, Figs. 9A to 9C are step diagrams of a modification of the manufacturing method shown in Figs. 8A to 8D (a modification in which the folded part does not include an optical member); Fig. 9A corresponds to Fig. 8B, showing the arrangement of optical components and printed wiring Fig. 9B corresponds to Fig. 8C, showing the step of disposing the image display member; Fig. 9C corresponds to Fig. 8D, showing the step of bending the free end portion of the display area. In FIG. 10, FIGS. 10A to 10C are step diagrams of a modification of the manufacturing method shown in FIGS. 8A to 8D (modification of printed wiring board and optical member contact); FIG. 10A corresponds to FIG. 8B, showing the optical member and printing The wiring board is arranged adjacently and the peeling layer of the display area is peeled from the transfer layer; Fig. 10B corresponds to Fig. 8C, showing the step of disposing the image display member; Fig. 10C corresponds to Fig. 8D, showing the step of bending the free end portion of the display area .

1: The first transparent conductive sheet

3: display area

4: marginal area

5: Substrate sheet

6: peeling layer

7: Transfer layer

8: Transparent conductive layer

Claims (9)

A transparent conductive sheet, characterized in that: Have a display area for arranging image display components and a marginal area continuous with the aforementioned display area; In the aforementioned display area, a substrate sheet, a release layer, a transfer layer, and a transparent conductive layer are sequentially arranged toward one side in the thickness direction; and In the marginal region, the base sheet, the transfer layer, and the transparent conductive layer are sequentially arranged toward one side in the thickness direction. A transparent conductive sheet, characterized in that: Have a display area for arranging image display components and a marginal area continuous with the aforementioned display area; In the aforementioned display area, a long substrate sheet, a release layer, a transfer layer, and a transparent conductive layer are sequentially arranged toward one side in the thickness direction; and In the marginal area, the elongated substrate sheet, the transfer layer, and the transparent conductive layer are sequentially arranged toward one side in the thickness direction; and The aforementioned marginal area is continuous in the aforementioned longitudinal direction. A touch sensor, characterized in that: Have a display area for arranging image display components and a marginal area continuous with the aforementioned display area; In the aforementioned display area, the transfer layer, the transparent electrode, and the optical member are sequentially arranged toward one side in the thickness direction; and In the marginal area, the substrate sheet, the transfer layer, the winding wiring, and the optical member and the wiring circuit board adjacent to each other are sequentially arranged toward one side in the thickness direction; When projecting in the thickness direction, the boundary between the optical member and the printed circuit board is included in the marginal area. The touch sensor of claim 3, wherein the aforementioned boundary is a gap separating the aforementioned optical member and the aforementioned printed circuit board. Such as the touch sensor of claim 3 or 4, wherein the marginal area has a folded back portion that folds back to the display area. An image display device characterized by having: Such as the touch sensor of request item 3 or 4, and The image display member arranged in the display area of the touch sensor. An image display device characterized by having: Such as the touch sensor of request 5, and The image display member arranged in the display area of the touch sensor. A method for manufacturing an image display device, characterized by having the following steps: Prepare the transparent conductive sheet as in claim 1; Forming transparent electrodes and winding wires from the aforementioned transparent conductive layer; The optical member is arranged to cover the portion adjacent to the display area in the display area and the marginal area, and the wiring circuit board is arranged in the marginal area to be adjacent to the optical member on the opposite side of the aforementioned portion part; Peeling off the peeling layer in the display area from the transfer layer, and removing the peeling layer in the display area and the substrate sheet corresponding thereto; Disposing the image display member on the transfer layer from which the release layer and the base material sheet are removed in the display area; and Fold the marginal area back to the display area toward the image display member side. The method for manufacturing an image display device according to claim 8, wherein in the step of arranging the optical member and the wiring circuit board, a gap is provided between the optical member and the wiring circuit board.

Images