CN211956441U

CN211956441U - Flexible touch panel

Info

Publication number: CN211956441U
Application number: CN202020884685.1U
Authority: CN
Inventors: 基亮亮; 周小红; 赵云龙
Original assignee: Weiyeda Technology Jiangsu Co ltd; Ivtouch Co ltd
Current assignee: Suzhou Weiyeda Technology Co ltd; Weiyeda Technology Jiangsu Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-11-17
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses a flexible touch panel, including touch-control unit, bond line, light shield layer and flexible protective layer, the bond line bonds respectively the touch-control unit with flexible protective layer, the light shield layer directly sets up flexible protective layer side surface edge all around, just the light shield layer with the bond line contact, the touch-control unit with the surface of flexible protective layer is plane or curvature radius is 30 ~ 600 mm's curved surface. Through the structure, the touch unit can be directly attached to the flexible protective layer provided with the shielding layer, the structure is simple, and the cost is low; and has better flexible effect.

Description

Flexible touch panel

Technical Field

The utility model relates to a touch-control technical field especially relates to a flexible touch panel.

Background

Curved and flexible displays have started to market in recent years. At present, a touch panel used in the market is a glass screen with a surface layer, a touch layer is arranged at a bottom layer, most of the touch panel is made of Polyethylene terephthalate (Polyethylene terephthalate) printed with Indium Tin Oxide (ITO), and semi-cured or fully-cured Optical Clear Adhesive (OCA) is adopted in the middle for processing and attaching; the non-bendable property of glass and the fragile bending of ITO material make the touch screen structure no longer flexible and conformable for curved display applications.

The foregoing description is provided for general background information and is not admitted to be prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible touch panel that flexible effect is good.

The utility model provides a flexible touch panel, including touch-control unit, bond line, light shield layer and flexible protective layer, the bond line bonds respectively the touch-control unit with flexible protective layer, the light shield layer adopts the mode of printing directly to set up flexible protective layer side surface edge all around, just the light shield layer with the bond line contact, the touch-control unit with flexible protective layer's surface is plane or curvature radius is 30 ~ 600 mm's curved surface.

In one embodiment, the touch unit comprises a substrate, a photosensitive resin unit and a nano conductive unit, the nano conductive unit is embedded into the photosensitive resin unit, the photosensitive resin unit is arranged on the surface of the substrate, and the surface of the photosensitive resin unit, which is far away from one side of the substrate, is attached to the flexible protective layer through the adhesive layer.

In one embodiment, the photosensitive resin unit includes a first photosensitive resin layer and a second photosensitive resin layer, the nano conductive unit includes a first conductive layer and a second conductive layer, the first conductive layer is embedded into the first photosensitive resin layer to form a first touch layer, the second conductive layer is embedded into the second photosensitive resin layer to form a second touch layer, and the first touch layer is disposed on the surface of the substrate.

In one embodiment, the first photosensitive resin layer is provided with a first grid groove, the first grid groove is filled with a conductive material to form the first conductive layer, the second photosensitive resin layer is provided with a second grid groove, and the second grid groove is filled with a conductive material to form the second conductive layer.

In one embodiment, the thickness of the first conductive layer and the second conductive layer is 6-20 μm.

In one embodiment, an insulating support layer is disposed between the first touch layer and the second touch layer.

In one embodiment, the thickness of the insulating support layer is 6 to 20 μm.

In one embodiment, the substrate has a thickness of 50 to 200 μm, and the flexible protection layer has a thickness of 30 to 2000 μm.

The utility model provides a flexible touch panel, the light shield layer sets up in the edge around flexible protective layer one side surface, and the touch unit directly laminates with the flexible protective layer that is equipped with the shield layer, simple structure, the cost is lower; and has better flexible effect.

Drawings

Fig. 1 is a schematic structural diagram of a flexible touch panel according to an embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1, the embodiment of the present invention provides a flexible touch panel, which includes a touch unit, an adhesive layer 5, a light shielding layer 6 and a flexible protection layer 7. The bonding layer 5 is respectively bonded with the touch unit and the flexible protection layer 7, the light shielding layer 6 is directly arranged on the periphery of the surface of one side of the flexible protection layer 7, and the light shielding layer 6 is in contact with the bonding layer 5. The surfaces of the touch unit and the flexible protection layer 7 are planes or curved surfaces with the curvature radius of 30-600 mm. For example, the radius of curvature is 50 mm.

The touch unit includes a substrate 1, a photosensitive resin unit, and a nano conductive unit. When the surface of the touch unit is required to be a curved surface, the planar touch unit can be bent to obtain the curved surface with the curvature radius of 30-600 mm.

The nano conductive unit is embedded into the photosensitive resin unit, the photosensitive resin unit is arranged on the surface of the substrate 1, and the surface of the nano conductive unit, which is far away from the side of the substrate 1, is in contact with the bonding layer 5.

The material of the substrate 1 is PET (Polyethylene terephthalate), PC (Polycarbonate), or PMMA (Polymethyl methacrylate); the thickness of the substrate 1 is 50 to 200 μm.

The photosensitive resin unit includes a first photosensitive resin layer 21 and a second photosensitive resin layer 41; the nano-conductive cells comprise a first conductive layer 22 and a second conductive layer 42. The first conductive layer 22 is embedded in the first photosensitive resin layer 21 to form a first touch layer 2; the second conductive layer 42 is embedded in the second photosensitive resin layer 41 to form the second touch layer 4. The first touch layer 2 is disposed on the surface of the substrate 1. Specifically, the first photosensitive resin layer 21 is provided with a first grid groove 211, a conductive material is filled in the first grid groove 211 to form a first conductive layer 22, and the thickness of the first conductive layer 22 is 6 to 20 μm; the second photosensitive resin layer 41 is provided with a second grid groove 411, the second grid groove 411 is filled with a conductive material to form a second conductive layer 42, and the thickness of the first conductive layer 22 is 6-20 μm.

The touch unit further comprises an insulating support layer 3, and the thickness of the insulating support layer 3 is 6-20 micrometers. The insulating support layer 3 is disposed between the first touch layer 2 and the second touch layer 4 to prevent short circuit caused by contact between the second conductive layer 42 and the first conductive layer 22 due to bubbles of the second photosensitive resin.

The material of the bonding layer 5 is OCA optical cement.

The flexible protection layer 7 is made of PET, PC or PMMA, the thickness of the flexible protection layer 7 is 30-2000 mu m, and when the surface of the flexible protection layer 7 is required to be a curved surface, the planar flexible protection layer 7 can be bent to obtain the curved surface with the curvature radius of 30-600 mm; the shading layer is made of a material with good flexibility, for example, the shading layer is made of nano ink and used for shading a lead wire area of the conducting layer, and the buckling resistance performance is good.

A hardened layer 8 is further arranged on the surface of one side, away from the light shielding layer, of the flexible protective layer 7; the hardening layer 8 is a UV hardening resin layer, an aluminum layer or a nano ceramic resin layer coated and cured on the second surface of the substrate 2, and has a thickness of 1-5 μm.

The actual fabrication process is as follows.

A first photosensitive resin layer 21 is formed by applying a photosensitive resin material on a substrate 1, a first grid groove 211 is formed on the first photosensitive resin layer 21 by imprinting, and then a first conductive layer 22 is formed by filling a conductive material into the first grid groove 211. And coating UV glue on the first conductive layer 22, and curing to form the insulating support layer 3. A photosensitive resin material is coated on the surface of the insulating support layer 3 on the side far away from the first conductive layer 22, a second grid groove 411 is formed on the second photosensitive resin layer 41 in an embossing mode, and then a conductive material is filled into the second grid groove 411 to form the second conductive layer 42. Thus, the touch control unit is manufactured. By adopting the design, the touch unit is flexible and bending-resistant, high in stability, high in production yield and low in cost.

A black ink layer is brushed on the periphery of one side surface of the flexible protection layer 7 to form a shading layer 6, and the shading layer 6 is used for shading the lead wire area of the conductive layer. And coating a hardening layer on the other side surface of the flexible protective layer 7.

And coating a layer of OCA optical cement on the surface of the second conductive layer 42 far away from the insulating support layer 3 to form the bonding layer 5, or coating a layer of OCA optical cement on the surface of the flexible protection layer 7 with black ink to form the bonding layer 5, wherein the thickness of the bonding layer is 25-250 μm, for example, 50 μm.

And then the touch unit and the flexible protective layer 7 are attached together to form the flexible touch panel. The flexible touch panel can be used for curved surface display screens and flexible display screens. The curvature radius of the flexible touch panel is 30-600 mm, for example, the curvature radius is 50 mm.

In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. It will be understood that when an element such as a layer, region or substrate is referred to as being "formed on," "disposed on" or "located on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly formed on" or "directly disposed on" another element, there are no intervening elements present.

In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the sake of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.

As used herein, the ordinal adjectives "first", "second", etc., used to describe an element are merely to distinguish between similar elements and do not imply that the elements so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.

As used herein, the meaning of "a plurality" or "a plurality" is two or more unless otherwise specified.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a flexible touch panel, its characterized in that includes touch-control unit, bond line, light shield layer and flexible protective layer, the bond line bonds respectively the touch-control unit with flexible protective layer, the light shield layer adopts the mode of printing directly to set up flexible protective layer side surface edge all around, just the light shield layer with the bond line contact, the touch-control unit with flexible protective layer's surface is plane or curvature radius is 30 ~ 600 mm's curved surface.

2. The flexible touch panel according to claim 1, wherein the touch unit comprises a substrate, a photosensitive resin unit and a nano conductive unit, the nano conductive unit is embedded in the photosensitive resin unit, the photosensitive resin unit is disposed on the surface of the substrate, and the surface of the photosensitive resin unit on the side away from the substrate is attached to the flexible protective layer through the adhesive layer.

3. The flexible touch panel of claim 2, wherein the photosensitive resin unit comprises a first photosensitive resin layer and a second photosensitive resin layer, the nano conductive unit comprises a first conductive layer and a second conductive layer, the first conductive layer is embedded in the first photosensitive resin layer to form a first touch layer, the second conductive layer is embedded in the second photosensitive resin layer to form a second touch layer, and the first touch layer is disposed on the substrate surface.

4. The flexible touch panel according to claim 3, wherein the first photosensitive resin layer is provided with a first grid groove filled with a conductive material to form the first conductive layer, the second photosensitive resin layer is provided with a second grid groove filled with a conductive material to form the second conductive layer.

5. The flexible touch panel according to claim 4, wherein the first conductive layer and the second conductive layer each have a thickness of 6 to 20 μm.

6. The flexible touch panel of claim 3, wherein an insulating support layer is disposed between the first touch layer and the second touch layer.

7. The flexible touch panel according to claim 6, wherein the thickness of the insulating support layer is 6 to 20 μm.

8. The flexible touch panel according to claim 2, wherein the substrate has a thickness of 50 to 200 μm, and the flexible protective layer has a thickness of 30 to 2000 μm.