CN203102218U

CN203102218U - Capacitive touch screen

Info

Publication number: CN203102218U
Application number: CN 201220747405
Authority: CN
Inventors: 金闯; 金殿松; 谢洪涛
Original assignee: Suzhou Sidike New Material Science and Technology Co Ltd
Current assignee: Jiangsu Sidike New Materials Science and Technology Co Ltd
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2013-07-31
Anticipated expiration: 2022-12-31

Abstract

The utility model discloses a capacitive touch screen. The capacitive touch screen comprises a glass substrate layer, a first plastic film layer with an ITO sensing electrode layer and a liquid crystal display (LCD), wherein the glass substrate layer and the first plastic film layer are bonded through a first OCA optical adhesive layer, the upper surface of the glass substrate layer and a second plastic film layer are bonded through a second OCA optical adhesive layer, the surface, in contact with the second OCA optical adhesive layer, of the second plastic film layer is coated with a printing ink layer, and the printing ink layer is located on an edge area of the second plastic film layer so that a display area is formed in the central area of the second plastic film layer. The capacitive touch screen has the advantages that usage amount of the OCA optical adhesive layers is reduced, production of bubbles is avoided, and meanwhile production efficiency and defect-free rate are improved.

Description

Capacitance touch screen

Technical field

The utility model relates to a kind of capacitance touch screen, relates in particular to a kind of capacitance touch screen.

Background technology

Capacitive touch screen is four layers of compound glass screen; the inside surface of glass screen and interlayer respectively scribble one deck ITO, and outermost layer is a skim silicon soil glassivation, and interlayer ITO coating is as workplace; draw four electrodes on four angles, internal layer ITO is that screen layer is to guarantee good working environment.When finger touch was on metal level, because people's bulk electric field, user and touch screen surface formed with a coupling capacitance, and for high-frequency current, electric capacity is direct conductor, so finger siphons away a very little electric current from contact point.This electric current divides the electrode on from touch-screen four jiaos and flows out, and the electric current of these four electrodes of flowing through is directly proportional with the distance of pointing four jiaos, and controller passes through the accurate Calculation to these four current ratios, draws touch point position.Form from the capacitive touch screen structure, its glass substrate occupies very big proportion; And during practical application, capacitance touch screen often all need embed in the corresponding electronic product, ink lay is to be printed on the glass-based flaggy in the existing capacitance touch screen, the thickness of ink lay that causes being positioned at the edge is thicker, and the OCA optics glue-line that the middle section that is positioned at ink lay needs should cost an arm and a leg with bonding middle section and the OCA optics glue-line that also needs to fill ink lay of lower floor, thereby cause OCA optical cement layer thickness thicker, and be easy to generate bubble, so cost has increased greatly; Secondly, the glass-based flaggy prints and adhesion technique simultaneously, is unfavorable for the raising of production efficiency and yield.Therefore how to reduce the use amount of OCA optics glue-line, avoid the generation of bubble, simultaneously, enhance productivity and yield, become the direction that those skilled in the art make great efforts.

Summary of the invention

The utility model provides a kind of capacitance touch screen, and this capacitance touch screen has reduced the use amount of OCA optics glue-line, has avoided the generation of bubble; Simultaneously, also enhance productivity and yield.

For achieving the above object, the technical solution adopted in the utility model is: a kind of capacitance touch screen, comprise the glass-based flaggy, have first plastic film layers and the LCD liquid crystal display of ITO sensing electrode layer, bonding by an OCA optics glue-line between the described glass-based flaggy and first plastic film layers, the upper surface of described glass-based flaggy is bonding by the 2nd OCA optics glue-line and second plastic film layers;

Surface coverage one ink lay that described second plastic film layers contacts with the 2nd OCA optics glue-line, this ink lay is positioned at the fringe region of second plastic film layers, thereby forms the viewing area at the described second plastic film layers middle section.

Further improved technical scheme is as follows in the technique scheme:

1. in the such scheme, described first plastic film layers is PET film, polypropylene film, polyethylene film or polyvinyl chloride film.

2. in the such scheme, described second plastic film layers is PET film, polypropylene film, polyethylene film or polyvinyl chloride film.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

The utility model capacitance touch screen, the upper surface of its glass-based flaggy is bonding by the 2nd OCA optics glue-line and second plastic film layers, surface coverage one ink lay that second plastic film layers contacts with the 2nd OCA optics glue-line, this ink lay is positioned at the fringe region of second plastic film layers, thereby form the viewing area at the described second plastic film layers middle section, thereby reduced the use amount of OCA optics glue-line, avoided the generation of bubble, simultaneously, also enhance productivity and yield.

Description of drawings

Accompanying drawing 1 is the utility model capacitance touch screen structural representation.

In the above accompanying drawing: 1, glass-based flaggy; 2, first plastic film layers; 3, LCD liquid crystal display; 4, an OCA optics glue-line; 5, the 2nd OCA optics glue-line; 6, second plastic film layers; 7, ink lay; 8, viewing area.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment 1: a kind of capacitance touch screen, comprise glass-based flaggy 1, have first plastic film layers 2 and the LCD liquid crystal display 3 of ITO sensing electrode layer, bonding by an OCA optics glue-line 4 between the described glass-based flaggy 1 and first plastic film layers 2, the upper surface of described glass-based flaggy 1 is bonding by the 2nd OCA optics glue-line 5 and second plastic film layers 6;

Surface coverage one ink lay 7 that described second plastic film layers 6 contacts with the 2nd OCA optics glue-line 5, this ink lay 7 is positioned at the fringe region of second plastic film layers 6, thereby forms viewing area 8 at described second plastic film layers, 6 middle sections.

Above-mentioned first plastic film layers 2 is for being PET film (PET), polypropylene film (PP), polyethylene film (PE) or polyvinyl chloride film (PVC).

Above-mentioned second plastic film layers 6 is PET film PET, polypropylene film PP, polyethylene film PE or polyvinyl chloride film PVC.

Embodiment 2: a kind of capacitance touch screen, comprise glass-based flaggy 1, have first plastic film layers 2 and the LCD liquid crystal display 3 of ITO sensing electrode layer, bonding by an OCA optics glue-line 4 between the described glass-based flaggy 1 and first plastic film layers 2, the upper surface of described glass-based flaggy 1 is bonding by the 2nd OCA optics glue-line 5 and second plastic film layers 6;

Above-mentioned first plastic film layers 2 is PET film PET; Above-mentioned second plastic film layers 6 is polypropylene film PP.

When adopting above-mentioned capacitance touch screen, the upper surface of its glass-based flaggy is bonding by the 2nd OCA optics glue-line and second plastic film layers, surface coverage one ink lay that second plastic film layers contacts with the 2nd OCA optics glue-line, this ink lay is positioned at the fringe region of second plastic film layers, thereby form the viewing area at the described second plastic film layers middle section, thereby reduced the use amount of OCA optics glue-line, avoided the generation of bubble, simultaneously, also enhance productivity and yield.

The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims

1. capacitance touch screen, it is characterized in that: comprise glass-based flaggy (1), have first plastic film layers (2) and the LCD liquid crystal display (3) of ITO sensing electrode layer, bonding by an OCA optics glue-line (4) between described glass-based flaggy (1) and first plastic film layers (2), the upper surface of described glass-based flaggy (1) is bonding by the 2nd OCA optics glue-line (5) and second plastic film layers (6);

Surface coverage one ink lay (7) that described second plastic film layers (6) contacts with the 2nd OCA optics glue-line (5), this ink lay (7) is positioned at the fringe region of second plastic film layers (6), thereby forms viewing area (8) at described second plastic film layers (6) middle section.

2. capacitance touch screen according to claim 1 is characterized in that: described first plastic film layers (2) is PET film, polypropylene film, polyethylene film or polyvinyl chloride film.

3. capacitance touch screen according to claim 1 is characterized in that: described second plastic film layers (6) is PET film, polypropylene film, polyethylene film or polyvinyl chloride film.