CN216286615U

CN216286615U - Touch structure and touch screen

Info

Publication number: CN216286615U
Application number: CN202122226181.8U
Authority: CN
Inventors: 陈仕超; 林汉良
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-04-12
Anticipated expiration: 2031-09-14

Abstract

The utility model discloses a touch structure which comprises upper ITO glass, lower ITO glass and an optical adhesive layer, wherein the optical adhesive layer is attached to the upper ITO glass and the lower ITO glass, the upper ITO glass consists of an upper glass substrate and an upper ITO functional layer positioned on the surface of the upper glass substrate, the lower ITO glass consists of a lower glass substrate and a lower ITO functional layer positioned on the surface of the lower glass substrate, a layered stacking structure sequentially comprises an upper glass substrate, an upper ITO functional layer, an optical adhesive layer, a lower ITO functional layer and a lower glass substrate from top to bottom, the upper ITO functional layer and the lower ITO functional layer are Sensor ITO pattern layers, and the upper glass substrate is a protective glass cover plate. According to the utility model, the touch control functional layer of the touch screen is arranged between the two pieces of glass and is isolated by the optical adhesive layer, the optical adhesive layer not only has an insulating effect, but also has a protective effect, so that an insulating process can be saved, and the reliability of the product is improved.

Description

Touch structure and touch screen

Technical Field

The utility model belongs to the technical field of touch control, and particularly relates to a touch control structure and a touch screen.

Background

At present, the common touch screen structure on an automobile is provided with a G + G bridging structure and an OGS bridging structure, but because the structure needs to be provided with bridging wiring and the bridge points in a visual area need to be made very small, the common touch screen structure is applied to some projects with high antistatic capability and strict reliability test requirements, the situation that the test cannot meet the requirements often occurs, and the other G + G single-layer glass double-sided ITO structure is not used as the bridging structure, but the problem that the reliability test cannot be met due to insufficient protection on one side without optical cement coverage exists. Therefore, it is a problem to be solved at present to develop a new touch structure for meeting some items with high requirements on static electricity resistance and strict reliability.

SUMMERY OF THE UTILITY MODEL

The utility model provides a touch structure and a touch screen with high antistatic capability and high reliability.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a touch structure, touch structure includes ITO glass, lower ITO glass and pastes ITO glass and lower ITO glass's optical cement layer, goes up ITO glass by last glass substrate and lie in the last ITO functional layer on glass substrate surface and constitute, and lower ITO glass comprises lower glass substrate and the lower ITO functional layer that lies in glass substrate surface down, and its stratiform stacked structure is from last to last glass substrate, last ITO functional layer, optical cement layer, lower ITO functional layer and lower glass substrate down in proper order, it is Sensor ITO pattern layer with lower ITO functional layer to go up the ITO functional layer, it is the cover plate of protection glass to go up the glass substrate.

Furthermore, the size of one side of the lower glass substrate in the length direction or the size of one side of the lower glass substrate in the width direction exceeds the glass substrate, the exceeding area is a binding area, binding pins are arranged on the binding area and used for binding an FPC (flexible printed circuit), and the binding pins are connected with a Sensor ITO (indium tin oxide) pattern layer through routing wires.

Furthermore, the wiring is positioned on the upper surface of the lower ITO functional layer, the Sensor ITO pattern on the lower ITO functional layer is directly electrically connected with the binding pin through the wiring, and the Sensor ITO pattern on the upper ITO functional layer is electrically connected with the wiring through the anisotropic conductive adhesive and then electrically connected with the binding pin through the wiring.

Furthermore, the whole area of the upper ITO glass and the whole area of the lower ITO glass consist of a visible area and a non-visual area at the periphery of the visible area, and the routing is located in the non-visual area.

Furthermore, the end part of the Sensor ITO pattern of the upper ITO functional layer is directly arranged in the non-visual area, and the end part of the Sensor ITO pattern is electrically connected with the routing wire through the anisotropic conductive adhesive positioned in the non-visual area.

Preferably, the wire is a silver paste wire.

Preferably, the anisotropic conductive adhesive is a conductive epoxy resin.

Further, the optical adhesive layer covers all the regions except the bonding region and the conductive epoxy adhesive region.

Further, the optical adhesive layer is an OCA optical adhesive layer.

A touch screen adopts a touch structure of any one of the above technical schemes.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

according to the utility model, the touch control functional layer of the touch screen is arranged between the two pieces of glass and is isolated by the optical adhesive layer, the optical adhesive layer not only plays an insulating role, but also has a protective role, so that an insulating process can be saved, the reliability of a product is improved, and the upper ITO functional layer is electrically connected to the binding pins through the conductive epoxy resin, so that the conductive function is realized, and the touch control functional layer is protected.

Drawings

FIG. 1 is a schematic front view of the present invention 1;

FIG. 2 is a schematic front view of the present invention, FIG. 2;

FIG. 3 is a schematic front view of the present invention in FIG. 3;

FIG. 4 is a schematic side sectional view of the present invention in FIG. 1;

FIG. 5 is a schematic side sectional view of the present invention FIG. 2;

wherein: 1. visible area, 2, non-visual area, 3, anisotropic conductive adhesive, 4, binding pin, 5, binding area, 6, routing, 7, optical adhesive layer, 8, lower ITO functional layer, 9, lower glass substrate, 10, upper glass substrate, 11, upper ITO functional layer.

Detailed Description

The utility model is described in further detail below with reference to the attached drawings:

the utility model relates to a novel touch structure and a touch screen scheme, which are suitable for projects with high requirements on reliability test and antistatic property of the touch screen.

Example 1

As shown in fig. 1 to 5, the touch structure of the present invention includes an upper ITO glass, a lower ITO glass, and an optical adhesive layer adhering the upper ITO glass and the lower ITO glass, where the upper ITO glass is composed of an upper glass substrate 10 and an upper ITO functional layer 11 located on the surface of the upper glass substrate, the lower ITO glass is composed of a lower glass substrate 9 and a lower ITO functional layer 8 located on the surface of the lower glass substrate, and the layered stacked structure sequentially includes, from top to bottom, the upper glass substrate 10, the upper ITO functional layer 11, the optical adhesive layer 7, the lower ITO functional layer 8, and the lower glass substrate 9, where the upper ITO functional layer and the lower ITO functional layer are Sensor ITO pattern layers, and the upper glass substrate is a protective glass cover plate.

The touch structure of the utility model also needs to be bound with an FPC (flexible printed circuit) so as to be connected with a driving circuit. For this embodiment, the dimension of the lower glass substrate on one side in the length direction or the dimension of the lower glass substrate on one side in the width direction exceeds the glass substrate, and the portion of the exceeding area is the binding area, through which the FPC can be bound. The bonding pins are arranged in the area of the embodiment and used for bonding the FPC, and the bonding pins are connected with the Sensor ITO pattern layer (namely the upper ITO functional layer and the lower ITO functional layer) through routing wires.

In order to facilitate the design of the routing and the processing, and reduce the manufacturing process, the routing is located on the upper surface of the lower ITO functional layer, based on the design, the Sensor ITO pattern on the lower ITO functional layer is directly electrically connected with the binding pin through the routing, and the Sensor ITO pattern on the upper ITO functional layer is electrically connected with the routing through the anisotropic conductive adhesive and then electrically connected with the binding pin through the routing.

For the embodiment, the routing is preferably silver paste routing. The anisotropic conductive adhesive preferably adopts conductive epoxy resin. The optical adhesive layer is preferably an OCA optical adhesive layer (i.e. a solid optical adhesive layer).

The embodiment also provides a touch screen, and the touch structure adopting the technical scheme is adopted.

Example 2

This example differs from example 1 in that: the whole area of the upper ITO glass and the whole area of the lower ITO glass both consist of a visible area and a non-visible area on the periphery of the visible area, the projection area of the visible area and the non-visible area on the upper ITO glass on the lower ITO glass are basically overlapped with the visible area and the non-visible area on the lower ITO glass, and in order to guarantee the visual effect of the touch screen, the wiring is located in the non-visible area. Based on the structure, the end part of the Sensor ITO pattern of the upper ITO functional layer is directly arranged on the non-visual area, and the end part of the Sensor ITO pattern is electrically connected with the routing wire through the anisotropic conductive adhesive positioned on the non-visual area. Similarly, the end of the Sensor ITO pattern of the lower ITO functional layer is also arranged in the non-visual area.

In order to further improve the antistatic capability and the product reliability, the optical adhesive layer described in this embodiment covers all the regions except the bonding region and the conductive epoxy region, that is, covers the trace and the touch Sensor as much as possible.

Claims

1. A touch structure is characterized in that: touch-control structure includes ITO glass, lower ITO glass and pastes ITO glass and lower ITO glass's optical cement layer, goes up ITO glass and comprises last glass substrate and the last ITO functional layer that is located glass substrate surface, and lower ITO glass comprises lower glass substrate and the lower ITO functional layer that is located glass substrate surface down, and its stratiform stacked structure is from last to last glass substrate, last ITO functional layer, optical cement layer, lower ITO functional layer and lower glass substrate down in proper order, go up the ITO functional layer and be Sensor ITO pattern layer with lower ITO functional layer, it is the cover plate for protecting glass to go up the glass substrate.

2. The touch structure of claim 1, wherein: the size of one side of the lower glass substrate in the length direction or the size of one side of the lower glass substrate in the width direction exceeds the glass substrate, the exceeding area is a binding area, binding pins are arranged on the binding area and used for binding FPC, and the binding pins are connected with a Sensor ITO pattern layer through wiring.

3. The touch structure of claim 2, wherein: the wiring is located on the upper surface of the lower ITO functional layer, the Sensor ITO pattern on the lower ITO functional layer is directly electrically connected with the binding pins through the wiring, and the Sensor ITO pattern on the upper ITO functional layer is electrically connected with the wiring through anisotropic conductive adhesive and then electrically connected with the binding pins through the wiring.

4. The touch structure of claim 3, wherein: the whole area of the upper ITO glass and the whole area of the lower ITO glass consist of a visible area and a non-visual area on the periphery of the visible area, and the routing is located in the non-visual area.

5. The touch structure of claim 4, wherein: the end part of the Sensor ITO pattern of the upper ITO functional layer is directly arranged in the non-visual area, and the end part of the Sensor ITO pattern is electrically connected with the routing wire through the anisotropic conductive adhesive positioned in the non-visual area.

6. The touch structure of any one of claims 2-5, wherein: the routing is silver paste routing.

7. The touch structure of any one of claims 3-5, wherein: the anisotropic conductive adhesive is conductive epoxy resin.

8. The touch structure of any one of claims 1-5, wherein: the optical adhesive layer covers all the areas except the binding area and the conductive epoxy adhesive area.

9. The touch structure of claim 8, wherein: the optical adhesive layer is an OCA optical adhesive layer.

10. A touch screen, characterized by: comprising a touch structure according to any one of claims 1-9.