CN213601193U

CN213601193U - Touch screen with damage-proof keys

Info

Publication number: CN213601193U
Application number: CN202022834703.8U
Authority: CN
Inventors: 龙文
Original assignee: Lengshuijiang Jingke Electronic Technology Co ltd
Current assignee: Lengshuijiang Jingke Electronic Technology Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-07-02
Anticipated expiration: 2030-12-01

Abstract

The utility model provides a touch-sensitive screen of button damage prevention. The touch screen with the keys prevented from being damaged comprises two stacked film layers, the upper end of each film layer is coated with an ITO layer, at least two key areas are arranged on the two ITO layers or the ITO layer positioned on the lower layer, and the key areas are arranged close to the bottom of the touch screen; the key area comprises a plurality of blocks, the blocks are sequentially butted to form the key area, and an insulating layer is covered on the blocks; one end of each block is connected in series by a silver paste line. Compared with the prior art, the touch screen with the damage-proof keys provided by the utility model does not affect the use of the keys even if one or more blocks are damaged; the transparent layer covers the key area, so that a better protection effect can be achieved; the problem of weakness of the key area is effectively solved, and the qualification rate of the touch screen is improved.

Description

Touch screen with damage-proof keys

Technical Field

The utility model relates to a touch-sensitive screen of button damage prevention.

Background

With the wide application of touch, at present, more and more electronic products and household appliances are equipped with a touch screen function of preventing damage of keys, and the structure generally uses a double-layer GFF (glass-fiber filter) which is a touch screen with double-film capacitive keys for preventing damage and comprises two film layers and a glass layer, wherein the two film layers are used as ITOsensor to realize touch control, and ITO (indium tin oxide) is nano indium tin metal oxide. The double-layer performance is stable, and multi-point touch and sensitive touch keys can be realized.

Touch screens have a variety of material structures, and usually an ITO glass is used as a substrate, or an ITO FILM is used as a substrate. It is well known that ITO glass is harder than ITO FILM, and the function of ITO glass is not affected by external extrusion force, but ITO FILM is softer, and the touch function area is slightly bent, extruded and collided to damage ITO, resulting in loss of touch function. Because the ITO FILM is thinner and lighter than ITO glass, the ITO FILM is generally selected as a substrate. Therefore, how to make the touch key of the ITO FILM substrate hard and not easy to be damaged becomes a research focus.

The touch screen area with the existing keys capable of preventing damage adopts a corresponding ITO square block pattern, and is connected and led to an FPC (flexible printed circuit) binding area by silver paste lines in a lap joint mode. Because ITO FILM substrate structure is fragile, the button district in addition generally designs in the below of window, and near the edge, personnel are in the operation in-process of taking, and the finger or utensil extremely easily contact, collide the button district, easily cause the fish tail and the damage in button district.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a touch-sensitive screen of button damage prevention has prevented effectively that the button district ITO avoids outside extrusion and loses the function.

The technical scheme of the utility model is that: a touch screen with damage prevention function for keys comprises two stacked film layers, wherein the upper end of each film layer is coated with an ITO (indium tin oxide) layer, at least two key areas are arranged on the two ITO layers or the ITO layer positioned on the lower layer, each key area comprises a plurality of blocks, the blocks are sequentially butted to form the key area, and an insulating layer is covered on the blocks; one end of each block is connected in series by a silver paste line.

In the scheme, the key area is divided into a plurality of blocks, and the plurality of blocks are adhered into a whole by the insulating layer, so that the use of the key is not influenced even if one or more blocks are damaged.

Preferably, the insulating layer is a transparent structure.

Preferably, a plurality of the blocks have equal areas.

Preferably, the area of the insulating layer is larger than that of the key area.

Preferably, the key area is of a rectangular structure, and the block is of a long rectangular structure matched with the key area.

Preferably, the film layer on the lower layer and the film layer on the upper layer are glued by using OCA.

Compared with the prior art, the beneficial effects of the utility model are that: the key area is divided into a plurality of blocks, and the blocks are adhered into a whole by using the insulating layer, so that the use of the key is not influenced even if one or more blocks are damaged; the transparent layer covers the key area, so that a better protection effect can be achieved, and the ITO can not be damaged even if the transparent layer is extruded from the outside; the problem of weakness of the key area is effectively solved, and the qualification rate of the touch screen is improved.

Drawings

Fig. 1 is a schematic cross-sectional structure view of a touch screen with damage-proof keys provided by the present invention;

fig. 2 is the utility model provides a structural schematic diagram of button in touch-sensitive screen of button damage prevention.

In the drawings: 1-film layer, 2-ITO layer, 3-OCA, 21-key area, 22-block and 23-insulating layer.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

As shown in fig. 1, the touch screen with the damage-proof key provided by this embodiment includes two stacked film layers 1, and a layer of ITO layer 2 is coated on the upper end of each film layer 1. The upper end of the film layer on the lower layer is glued with the lower end of the film layer on the upper layer by OCA (optical clear adhesive) to form a double layer.

As shown in fig. 2, at least two key regions 21 are disposed on the two ITO layers or the ITO layer located at the lower layer. In the present embodiment, there are two key regions 21 on the ITO layer 2, and the key regions are disposed on the lower ITO layer 2. The key area 21 is arranged adjacent to the bottom of the touch screen. A key hole 4 is arranged between the two key areas 21.

The key area 21 has a rectangular structure. The key area 21 includes a plurality of blocks 22, and the blocks are long rectangular structures 22 matched with the key area 21. A plurality of the blocks 22 are equal in area. The blocks 22 are sequentially connected in the key area 21. One end of the blocks 22 is connected in series by silver paste lines 5. The silver paste line 5 is silver paste and plays a role of a lead and a lead.

A plurality of the blocks 22 are covered with an insulating layer 23. The insulating layer 23 is an ins (insulation) transparent layer. The area of the insulating layer 23 is larger than that of the key area 21, so that the insulating layer completely covers the key area 21 and the part connected with the silver paste line 5 in series, even if the ITO in the key area is scratched or damaged by 1-3 blocks 22, the touch function can still be ensured, and in addition, the insulating layer 23 is covered, so that the protection effect can be achieved.

The utility model provides a processing method of touch-sensitive screen's of button damage prevention is:

designing the size of the block according to the size of the key pattern, and requiring the block to completely contain the key pattern;

connecting a plurality of blocks of the key area in series by using a silver paste line, so that each block is communicated with each other;

finally, covering a transparent INS insulating layer, wherein the size of the INS insulating layer is required to completely cover the serial connection position of the block and the silver paste line;

and finishing the manufacture of the key.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A touch screen with damage-proof keys comprises two stacked film layers, wherein the upper end of each film layer is coated with an ITO layer, and the touch screen is characterized in that at least two key areas are arranged on the two ITO layers or the ITO layer positioned at the lower layer, and the key areas are arranged near the bottom of the touch screen; the key area comprises a plurality of blocks, the blocks are sequentially butted to form the key area, and an insulating layer is covered on the blocks; one end of each block is connected in series by a silver paste line.

2. The touch screen of claim 1, wherein the insulating layer is a transparent structure.

3. The touch screen of claim 1, wherein the plurality of blocks are equal in area.

4. The touch screen of claim 1, wherein the area of the insulating layer is larger than the area of the key region.

5. The touch screen of claim 1, wherein the key region has a rectangular structure, and the blocks have long rectangular structures matching the key region.

6. The touch screen of claim 1, wherein the film layer on the lower layer and the film layer on the upper layer are glued by OCA.