JP6370873B2 - Touch sensor and display panel with touch sensor - Google Patents

Description

  In the present invention, a touch sensing portion made of a transparent conductive layer is provided at the center of the base sheet, and there is no frame portion on the outer peripheral side, and a routing circuit layer electrically connected to the transparent conductive layer is formed only on the remaining outer peripheral side. The present invention relates to a touch sensor having a frame portion.

  Conventionally, a touch sensing unit made of a transparent conductive layer is provided in the center of the base sheet, and there are no frame parts on the outer periphery, and a frame in which a routing circuit is formed that is electrically connected to the transparent conductive layer only on the other outer periphery. As an invention of a touch sensor having a portion, there is an invention of Patent Document 1.

JP2015-143964A

  A touch sensor having no frame portion as in Patent Document 1 has a user-friendly advantage that a touch sensing input screen can be maximized while maintaining a compact outer dimension in an electronic input terminal such as a smartphone or a tablet.

  However, even though there is no frame part, it is only for the three outer sides of the touch sensing unit, and the other side must form a routing circuit layer for transmitting the signal detected by the touch sensing unit to the control circuit. In fact, a frame is absolutely necessary. As a result, there has been a problem that the external dimensions have to be increased in order to form the remaining one side frame portion.

  The present invention has been made in order to solve the above-mentioned problem. Although the frame portion of the remaining side itself is formed, the frame portion is routed and bent at the position of the circuit layer, so that the frame portion is substantially formed. The purpose is to eliminate almost all of them or make them very small. And it aims at providing the touch sensor for electronic input terminals which can be folded by arrange | positioning the frame part of the remaining one side in the place different from a crease | fold.

  In order to achieve the above object, according to a first aspect of the present invention, a touch sensing unit comprising a transparent conductive layer is provided at the center of a base sheet, and the outer peripheral three sides have no frame portion and the remaining outer peripheral side only has a transparent conductive layer. The touch sensor has a frame portion in which a routing circuit layer electrically connected to the frame is formed, and the frame portion on the other side has a convex shape.

  According to this invention, the frame portion has a convex shape instead of a rectangle, and it is easy to bend at the convex step. In addition, the bent circuit layer is more flexible than the transparent conductive layer. Therefore, there is an effect that the electrical connection can be maintained with reliability even if it is bent.

  According to a second aspect of the present invention, there is provided a touch sensing unit comprising a transparent conductive layer at the center of the base sheet, and there is no frame portion on the outer peripheral side, and the routing circuit layer is electrically connected to the transparent conductive layer only on the remaining outer peripheral side. Is a touch sensor having a frame portion formed with a half cut formed in the frame portion on the other side.

  According to the present invention, the frame portion is easily bent at the half cut. In addition, the bent circuit layer is more flexible than the transparent conductive layer. Therefore, there is an effect that the electrical connection can be maintained with reliability even if it is bent.

  A third invention is the touch sensor according to the first or second invention, wherein the width of the outer peripheral frame portion on the other side is 0.7 to 3 mm. According to the present invention, since the width of the bent frame portion is less than 3 mm, the frame portion is hardly bulky and can be used even in a small electronic input terminal having a limited space.

  A fourth invention is a touch sensor according to any one of the first to third inventions, wherein the touch sensor is bent by a routing circuit layer in a frame portion. According to this invention, the area of the outer peripheral frame portion on the remaining one side can be greatly reduced. As a result, there is an effect that it is possible to obtain a touch sensor in which the frame portion is substantially eliminated or very small.

  A fifth invention is the touch sensor according to any one of the first to fourth inventions, wherein the transparent conductive layer is independently formed in parallel with a linear gap of 0.01 to 2.0 mm as a boundary. . According to the present invention, a plurality of transparent conductive layers independently formed in parallel are divided from the beginning with the above-mentioned linear gap as a boundary, and the linear gap is folded or bent at the crease. In addition, there is an effect that an electric signal can be detected by the touch sensing unit of the transparent conductive layer.

  A sixth invention is a touch sensor according to the fifth invention, wherein two transparent conductive layers are formed independently in parallel, and the patterns of the two transparent conductive pattern layers are substantially the same. According to the present invention, there is an effect that the size of the touch sensor can be efficiently folded in half by folding the linear gap.

  A seventh invention is the touch sensor according to the sixth invention, wherein the routing circuit layer is formed only on the side opposite to the side having the linear gap of each transparent conductive layer. According to the present invention, the area of the frame portion can be greatly reduced by folding the routing circuit layer, and the size of the touch sensor can be folded in half by folding the linear gap. .

  An eighth invention of the present invention is a display panel with a touch sensor in which the touch sensor according to the fifth to seventh inventions and a display panel are stacked and can be folded by folding a linear gap. According to the present invention, it is possible to obtain an electronic input terminal with a display that has a display almost on the entire surface and can be folded.

  According to the present invention, although the frame part of the remaining one side of the touch sensing unit is formed, the frame part is substantially eliminated by bending the frame part and bending it at the circuit layer. Can be small. And the touch sensor for electronic input terminals which can be folded can be provided by arrange | positioning the frame part of the remaining one side in the place different from a crease | fold.

It is sectional drawing which shows an example of the touch sensor of this embodiment. It is a top view of the touch sensor of FIG. It is a top view which shows an example which bent the frame part of the touch sensor of FIG. It is a top view which shows another example of the convex shape of the touch sensor of FIG. It is a top view which shows another example of the convex shape of the touch sensor of FIG. It is a top view which shows another example of the convex shape of the touch sensor of FIG. It is a top view which shows another example of the convex shape of the touch sensor of FIG. It is sectional drawing which shows the problem of the position shift of the conventional touch sensor. It is a top view which shows another example of the touch sensor of this embodiment. FIG. 10 is a cross-sectional view of the touch sensor of FIG. 9. It is sectional drawing which shows another example of the touch sensor of this embodiment, and is sectional drawing which shows an example in which two transparent conductive film layers are formed. It is a top view which shows an example which bent the frame part of the touch sensor of this embodiment, and is an upper view which shows an example which can be folded in two. It is a top view which shows an example which bent the frame part of the touch sensor of this embodiment, and is a top view which shows an example which can be folded in four. It is sectional drawing which shows an example of the display panel with a touch sensor which laminated | stacked the touch sensor and display panel which can be folded in two of this embodiment. It is a top view which shows an example of the touch sensor provided with the half cut of this embodiment.

  Embodiments according to the present invention will be described below with reference to the drawings. In the touch sensor 1000 according to the embodiment of the present invention, the touch sensing unit 4 including a circuit of the transparent conductive film layer 3 is provided in the central part 2 of the base sheet 1, and the outer peripheral three sides have no frame part and the remaining outer peripheral side. The touch sensor includes only a frame portion 6 on which a routing circuit layer 5 electrically connected to the transparent conductive layer 3 is formed, and the frame portion 6 on the other side has a convex shape when viewed from above. Touch sensor (FIGS. 1 and 2).

  The routing circuit layer 5 is a layer for transmitting an electrical signal detected by the touch sensing unit 4 to the control circuit, and is formed on the frame portion 6 for electrical connection with the transparent conductive layer 3. The present invention also obtains electrical reliability by folding the convex stepped portion 10 of the frame portion 6 and folding it around the circuit layer 5, and greatly reduces the area of the frame portion 6 when viewed from above. (Fig. 3).

  The reason for bending the lead-out circuit layer 5 is that the material used for the transparent conductive film layer 3 is generally a metal oxide composed of indium tin oxide, zinc oxide, tin oxide, indium oxide, and the like. Since objects and the like are often brittle and do not have resistance to bending, if only the transparent conductive film layer 3 is brought to the stepped portion 10, the electric resistance value is greatly increased or time-lapsed when bent. This is because there is a concern such as disconnection. In that respect, such a concern does not arise if the routing circuit layer 5 is made of a material such as copper, aluminum, nickel, silver, tin, palladium, gold, or carbon that is more flexible than a metal oxide.

  Actually, using a method of bending 180 degrees along a mandrel rod having an inner diameter of 2 mm (radius 1 mm) in accordance with the winding method standard 6.2 of JIS Z 2248: 2006, indium having a thickness of 50 nm is formed on a 125 μm-thick cycloolefin film. Electrical resistance measured by applying a tester to both ends of each circuit line with a test piece in which a transparent conductive film layer 3 made of tin oxide and a routing circuit layer 5 made of copper having a thickness of 10 μm were formed in a pattern having a width of 1 mm and a length of 10 mm. The value was verified by evaluating how much the bending increased by% compared to before. As a result, in the former transparent conductive film layer 3, there was a test piece in which the electrical resistance value increased by 10% or more when cracking occurred when repeated bending 10 times, whereas in the latter routing circuit layer 5, the electrical resistance value However, cracks did not occur at less than 10%.

  The shape of the frame portion 6 is not a rectangular shape having the same length, but is preferably a convex shape with a slightly different stepped length, and the convex stepped portion 10 is folded to provide a routing circuit layer. 5 makes it easy to bend (FIG. 2). The convex shape is not limited to the stepped 90 degree as shown in FIG. 2, but may be a more gentle angle as shown in FIG. 4, and conversely, a more acute angle as shown in FIG. It may be of a shape that contains. Or the shape of only one side like FIG. 6 may be sufficient, and the shape where the center part is concave shape and multiple convex parts are formed like FIG. 7 may be sufficient. In terms of ease of folding, it is better to have a shape with a cut at an acute angle as shown in FIG. 5. However, if there is a lot of circuit lines in the routing circuit layer 5 and there is not enough space, the shape as shown in FIG. A gentle angle is recommended.

  And the frame part when it is visually recognized from the upper part after bending by making the width W of the longer one of the convex shape of the frame part 6 (that is, the side on the touch sensing unit 4 side) as small as possible. The area of 6 is made significantly smaller. As a result, the touch sensor 100 after being bent becomes a four-side frame-less touch sensor having substantially no frame portion 6 or very small (FIG. 3).

  In addition, you may provide the half cut 7 in the base sheet 1 of the frame part 6 (FIG. 15). Half cuts may be formed on both sides or on one side. Or you may form only in a very small part. By making the shape of the frame portion 6 convex and forming the half cut 7, it becomes easier to bend. However, when it is difficult to make the shape of the frame portion 6 convex, only the half cut 7 may be formed. For example, when the outer shape of the touch sensor 1000 is punched with a punching blade, the half cut 7 is efficiently formed by half cutting together.

  The transparent conductive film layer 3 is made of a metal oxide having a thickness of several tens to several hundreds of nanometers formed by a method such as sputtering, ion plating, or vapor deposition, and a method such as etching after forming a resist on the surface. Therefore, it is good to pattern. The transparent conductive film layer 3 may be a single layer or a multilayer of two or more layers. When forming two or more layers, a plurality of substrate sheets 1 each provided with a transparent conductive film layer 3 may be laminated, or a plurality of transparent conductive film layers 3 may be provided on one side of the substrate sheet 1, The transparent conductive film layer 3 may be provided on both surfaces of the base sheet 1. A combination thereof may also be used. However, when two or more layers are formed, each of the transparent conductive layers 3 is not provided with a routing circuit layer 5 but any of the transparent conductive layers 3 is electrically connected to the routing circuit layer 5 on the same plane. It is preferable to do so.

  The reason for this is that, for example, when the routing circuit layers 5 and 500 are provided in the two transparent conductive film layers 3 and 300, respectively, the transparent conductive film layer 3 and the routing circuit layer 5 and the transparent conductive film layer 30 and the routing circuit layer 50 are provided. When a pattern is formed, a positional deviation 8 occurs during pattern formation. Further, when the routing circuit layers 5 and 500 are formed on different base sheets 1 and 100 and bonded to each other, a positional deviation 9 is also caused. (FIG. 8).

  These misalignment 8 and misalignment 9 are directly reflected in the width W of the longer convex shape of the frame portion 6 (that is, the side closer to the touch sensing unit 4), and W is substantially large. Therefore, as a result, it is impossible to obtain a touch sensor having substantially no or very small frame portion 6 that is the object of the present invention.

  In that respect, if any of the transparent conductive layers 3 and 300 is formed so as to be electrically connected to the routing circuit layer 5 formed on the same plane, the above-described misalignment 8 and misalignment 9 do not occur. The end 40 of the routing circuit layer 5 on the touch sensing unit 4 side is patterned so as to be arranged in parallel with the convex stepped portion 10, and the distance (ie, W) between the end 40 and the stepped portion 10 is minimized. By doing so, the area of the frame portion 6 when viewed from the top after folding is minimized. As a result, the touch sensor 1000 after bending can be a four-side frame-less touch sensor that has substantially no frame portion 6 or is very small.

  Any method and structure may be used so that the transparent conductive layers 3 and 300 are electrically connected to the routing circuit layer 5 formed on the same plane, and are not particularly limited. As specific examples, there are structures and methods as shown in FIGS. That is, the transparent conductive film layer 300 is formed on the base sheet 1, the insulating film layer 20 is formed thereon, and the transparent conductive film layer 3 and the routing circuit layer 5 are provided on the surface of the insulating film layer 20. The routing circuit layer 5 is simultaneously formed on the transparent conductive layer 3, the stepped portion of the insulating film layer 20 and the base sheet 1.

  That is, the transparent conductive layer 3 is electrically connected to the routing circuit layer 5A on the surface of the substrate sheet 1, and the transparent conductive layer 300 is electrically connected to the routing circuit layer 5B on the surface of the substrate sheet 1, and is connected to the routing circuit layer 5A. 5B are formed simultaneously on the same plane of the base sheet 1 in parallel, and the routing circuit layer 5A and the end 40 of the routing circuit layer 5B on the side of the touch sensing unit 4 are convex steps when viewed from above. 10 so as to be aligned in parallel with the plate. Then, the distance (ie, W) between the end portion 40 and the stepped portion 10 is minimized as much as possible (FIGS. 9 and 10).

  The routing circuit layer 5A has a level difference corresponding to the thickness of the insulating film layer 20 as compared with the routing circuit layer 5B, and is difficult to form by printing or the like, but can be formed sufficiently simultaneously by using a method such as plating.

  For the base sheet 1, a resin film of polyethylene terephthalate, cycloolefin, polycarbonate, acrylic, triacetyl cellulose, or the like can be used. The thickness of the film substrate is preferably about 30 to 500 μm. In addition, it tested using the method bent 180 degree | times along the mandrel stick | rod of the internal diameter 2mm (radius 1mm) based on the standard 6.2 of the winding method of JISZ2248: 2006 with a film base material here. At this time, any material other than the above resin film may be used as long as it does not crack or whiten, and examples thereof include a glass substrate such as non-alkali borosilicate glass having a thickness of about 50 to 300 μm.

  The insulating film layer 20 is made of a transparent resin ink having a binder of polyvinyl resin, polyamide resin, polyester resin, polyacrylic resin, polyurethane resin, polyvinyl acetal resin, polyester urethane resin, alkyd resin, or the like. Can be mentioned. As a forming method, a normal printing method such as screen printing, offset printing, gravure printing, flexographic printing, or the like may be used. The thickness of the printing layer is generally about 0.5 to 10 μm. The insulating film layer 20 may be a resin film such as polyethylene terephthalate, cycloolefin, polycarbonate, acrylic, or triacetyl cellulose, or a glass substrate. In that case, for example, the base sheet 1 may be replaced with the insulating film layer 20 and the transparent conductive layer 3 and the transparent conductive layer 300 may be provided on both sides of the base sheet 1.

  There is no particular limitation on the method in which the convex stepped portion 10 is folded and bent by the routing circuit layer 5. The folds of the stepped portion 10 may be made and bent by hand, or may be bent using a machine with a contact. What is important is that the routing circuit layer 5 bends and that the end 40 of each routing circuit layer 5 has the same distance (ie, W) from the step portion 10 and is minimized. is there. That is, W is at least 0.01 to 1.5 mm, preferably 0.01 to 0.6 mm.

  The width of the frame portion 6 is preferably 0.7 to 3 mm. Since the width of the frame portion 6 excluding W wraps around the side surface after being bent, the width of the frame portion 6 can be much larger than 3 mm. However, there are as many small electronic input terminals as possible in a narrow space in recent years. This is to prevent the frame portion 6 wrapping around the side surface from becoming bulky and becoming an obstacle when other electronic components are mounted.

  The pattern of the transparent conductive layer 3 (or the transparent conductive layers 3 and 300) has a routing circuit layer 5 (or routing circuit layers 5 and 500) that has no frame on the three outer sides and is electrically connected only to the remaining one side. As long as it is formed, it may be other than FIG. 2 and FIG. 10, and is not particularly limited.

  In addition, taking advantage of the fact that there are no frame parts on the three sides of the outer periphery, a plurality of patterns of the transparent conductive layer 3 (or transparent conductive layer 3, 300) and the routing circuit layer 5 may be independently formed in parallel. By forming the transparent conductive layer 3 (or the transparent conductive layers 3 and 300) so as to be fragile and not resistant to bending, it is possible to bend the touch for an electronic input terminal. The sensor 1000 can be used.

  That is, the touch sensing portions 4A and 4B made of the transparent conductive layer 3 (or the transparent conductive layers 3 and 300) are independently formed in parallel on the base sheet 1 with the linear gap 70 as a boundary. The touch sensing units 4A and 4B are formed with substantially the same pattern. If formed in this way, no matter how many times the linear gap 70 is bent and bent, the touch sensing parts 4A and 4B will not be damaged, and the transparent conductive layer 3 (or the transparent conductive layers 3 and 300) will not be damaged. Even if it is made of a metal oxide or the like that is brittle and has no resistance to bending, it can be folded and used (FIG. 11). The substantially identical pattern includes not only the completely identical pattern but also a pattern that exhibits the same functional effect even if it is a completely different pattern.

  If the linear gap 70 is set to a minimum necessary width as a crease, the touch panel 1000 can be input on the entire surface without discomfort even in the open state. The width of the linear gap 70 is preferably 0.01 to 2.0 mm. This is because if the width is larger than 2.0 mm, there is a case where no input is made even if the surrounding area is touched in the open state. On the other hand, if the width is smaller than 0.01 mm, there is a concern that the crease will be applied.

  A dummy pattern having the same material and thickness as the transparent conductive layer 3 (or the transparent conductive layers 3 and 300) may be formed in the linear gap 70. Although the dummy pattern does not have the function of detecting the signal of the touch input, it has the same hue and light transmittance as the transparent conductive layer 3 (or the transparent conductive layers 3 and 300). This is because it becomes 1000.

  The routing circuit layer 5 to be electrically connected to the transparent conductive layer 3 (or the transparent conductive layers 3 and 300) may be provided on any outer periphery except for the linear gap 70. For example, both are provided on the same lower side. Alternatively, one may be provided on the lower side and the other on the upper side.

  However, since the person feels most psychologically uncomfortable when the width W of the frame portion 6 is on both sides in a spread state, the routing circuit layer 5 has a linear gap 70 between the touch sensing portions 4A and 4B. It is preferable that the side formed on the side opposite to the side, that is, the 4A routing circuit layer 5 is provided on the left side and the 4B routing circuit layer 5 is provided on the right side (FIG. 11). Then, by folding the routing circuit layer 5 on both sides, the area of the frame portion 6 becomes very small only at the interval (ie, W) between the end portion 40 and the stepped portion 10, and the linear gap 70 And the size of the touch sensor 1000 can be folded in half (FIG. 12).

  In the case of FIG. 12, two are folded, but it is also possible to fold three or more touch sensors 1000, for example, four, in which case the routing circuit layers 5 are all provided on the same lower side. However, it is preferable because a person feels the most uncomfortable feeling in a state where the person is wide open (FIG. 13).

  If the above touch sensor 1000 and the display panel 2000 that can have almost no frame are laminated, the display panel 3000 with a touch sensor that can be folded by folding the linear gap 70 can be manufactured. By using it and assembling with other parts, it is possible to obtain an electronic input terminal with a display that allows touch input, has a display almost entirely, and can be folded (FIG. 14).

  The display panel 2000 may be a commonly used liquid crystal display or the like, and is not particularly limited. However, in order to have almost no frame, an LED display such as an organic EL or inorganic EL formed from a resin film such as a bendable polyimide is preferable for the driving substrate of the display panel 2000. It is good to use in.

  In addition, although this embodiment has the big feature that it can apply even if the transparent conductive layer 3 is a brittle material like a metal oxide, the material of the transparent conductive layer 3 is not limited to a metal oxide. That is, transparent conductive films containing ultrafine conductor fibers (metal nanofibers or metal nanowires or carbon nanotubes) made of conductive metal or carbon, and conductive metals such as gold, silver, copper, tin, nickel, aluminum, and palladium Transparent conductive film that is formed by patterning or self-organizing with fine lines that cannot be visually confirmed, and transparent in appearance, and transparent conductive film made of thiophene-based conductive polymer such as PEDOT (polyethylenedioxythiophene) It does not matter.

  Further, the frame portion 6 may be provided with a decoration layer in order to hide the pattern such as the routing circuit layer 5. The decorative layer may be a printing ink film containing a pigment or a dye, or may be composed of a metal thin film layer or a combination of a metal thin film layer and the printing layer. Moreover, when each layer is laminated, an optical transparent pressure-sensitive adhesive layer, an optical transparent adhesive layer, an anchor layer, and the like may be appropriately provided between the layers in order to improve interlayer adhesion. Further, a cover glass film such as a thin tempered glass or sapphire glass or a cover film film with a hard coat may be laminated on the surface of the display panel with a touch sensor 3000.

  Four independent touch sensing parts consisting of a single transparent conductive layer having a thickness of 200 nm and containing zinc oxide as a main component by an ion plating method using a polyethylene terephthalate film having a thickness of 100 μm as a base sheet. A touch sensor formed in parallel was created. A linear gap having a width of 1 mm is formed between the patterns of these touch sensing parts, and each of the outer sides of the touch sensing part has no frame and the other side is a frame part having a width of 2 mm. In this case, a routing circuit layer having a thickness of 30 μm mainly composed of an ultraviolet curable silver paste film electrically connected to the transparent conductive layer was formed by a photolithography method. The base sheet was punched into a convex outer shape on both sides of the routing circuit layer, and a half cut was formed on the back surface of the transparent conductive layer forming surface.

When the base sheet was bent along the convex step and the half cut, the width of the frame portion on the remaining side decreased from 2 mm to 0.5 mm. Then, when this touch sensor and an organic EL display consisting of an RGB pixel panel are laminated, a display panel with a touch sensor having almost no frame portion in appearance can be produced. Even if the display panel with a touch sensor was bent 10,000 times with a linear gap having a width of 1 mm, no abnormality occurred in the electric signal detection function of the touch sensing unit.
When a cover glass made of sapphire glass with a thickness of 0.1 mm is affixed to this display panel with a touch sensor and applied to a 10-inch tablet terminal, the tablet terminal is folded into a bellows shape at a linear gap with a width of 1 mm. It was possible to downsize to about 5 inches.

  A touch sensing part consisting of two transparent conductive layers with a thickness of 100 nm mainly composed of indium tin oxide by sputtering is used as a base sheet of a cycloolefin film having a thickness of 70 μm. A touch sensor formed in parallel was created. A linear gap having a width of 0.6 mm is formed between the patterns of these touch sensing parts, and each of the outer sides of the touch sensing part has no frame and the other side has a width of 1.5 mm. In the frame portion, on one side of the base sheet, a routing circuit layer having a thickness of 30 μm mainly composed of a copper foil electrically connected to the transparent conductive layer was formed by a plating method. The base sheet was punched into a convex outer shape on both sides of the routing circuit layer.

When the base sheet was bent at this convex step, the width of the remaining frame portion was reduced from 1.5 mm to 0.3 mm. And when this touch sensor and the inorganic EL display which consists of a pixel panel of the whole surface RGB are laminated | stacked, the display panel with a touch sensor which has almost no frame part on the external appearance was able to be created. Even if this display panel with a touch sensor was bent 10,000 times with a linear gap having a width of 0.6 mm, no abnormality occurred in the electric signal detection function of the touch sensing unit. When a 0.15-mm thick cover film with a hard coat is pasted on this display panel with a touch sensor and applied to a 6-inch smartphone terminal, the tablet terminal is folded in two at a linear gap with a width of 1 mm. It was possible, and it was possible to make it compact to a size of about 3.5 inches.

DESCRIPTION OF SYMBOLS 1,100 Base sheet 2 Center part 3,300 Transparent conductive film layer 4, 4A, 4B, 4C, 4D Touch sensing part 5, 5A, 5B, 500 Routing circuit 6 Frame part 7 Half cut 8 Position shift at the time of pattern formation 9 Misalignment of bonding 10 Convex stepped portion 11 Decorative printing layer 20 Insulating film layer 40 End of touch circuit on touch sensing portion side 70 Linear gap 1000 Touch sensor 2000 Display panel 3000 Display panel with touch sensor W The distance between the end 40 on the touch sensing portion side of the routing circuit and the convex stepped portion 10

Claims (7)

A touch sensing unit made of a transparent conductive layer is provided in the center of the base sheet, and there are no frame parts on the outer periphery, and a frame in which a routing circuit layer electrically connected to the transparent conductive layer is formed only on the other outer periphery. A touch sensor having a portion, a convex portion for bending at a step portion is formed in the frame portion of the remaining side, and the convex step portion and the end of the routing circuit layer on the touch sensing portion side A touch sensor having an interval of 0.01 to 1.5 mm. The touch sensor according to claim 1, wherein the touch sensor is bent at the convex stepped portion. The transparent conductive film layer is formed in a plurality of layers through an insulating film layer, and the routing circuit layer electrically connected to the plurality of transparent conductive layers is formed on the same surface. The touch sensor described. A touch sensing unit made of a transparent conductive layer is provided in the center of the base sheet, and there are no frame parts on the outer periphery, and a frame in which a routing circuit layer electrically connected to the transparent conductive layer is formed only on the other outer periphery. A touch sensor having a portion, the frame portion of the remaining one side having a convex shape, and a plurality of the transparent conductive layers are independently arranged in parallel with a linear gap of 0.01 to 2.0 mm as a boundary. The formed touch sensor. The touch sensor according to claim 4, wherein the two transparent conductive layers independently formed in parallel are two, and the patterns of the two transparent conductive layers are substantially the same. The touch sensor according to claim 5, wherein the routing circuit layer is formed only on a side opposite to the side having the linear gap of each transparent conductive layer. A display panel with a touch sensor, wherein the touch sensor according to any one of claims 4 to 6 and a display panel are stacked, and can be folded by folding the linear gap.

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