CN203102228U

CN203102228U - Capacitive touch screen for mobile phone

Info

Publication number: CN203102228U
Application number: CN 201320016049
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: 2013-01-11
Filing date: 2013-01-11
Publication date: 2013-07-31
Anticipated expiration: 2023-01-11

Abstract

The utility model discloses a capacitive touch screen for a mobile phone. The capacitive touch screen for the mobile phone comprises a glass substrate layer, a first plastic thin film layer with an ITO sensing electrode layer, a second plastic thin film layer and a liquid crystal display (LCD), wherein the second plastic thin film layer is glued to the first plastic thin film layer through first OCA optical glue, the upper surface of the second plastic thin film layer is glued to the glass substrate layer through second OCA optical glue, an ink layer covers the surface, contacted with the first OCA optical glue, of the second plastic thin film layer, the ink layer is located on the edge area of the second plastic thin film layer, and thus a display area is formed in the central area of the second plastic thin film layer. The capacitive touch screen for the mobile phone reduces the using amount of the OCA optical glue, and avoids generation of bubbles.

Description

The mobile phone capacitance touch screen

Technical field

The utility model relates to a kind of capacitance touch screen, relates in particular to a kind of mobile phone 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, mobile phone often all need embed in the corresponding electronic product with capacitance touch screen, existing mobile phone is to be printed on the glass-based flaggy with ink lay in the capacitance touch screen, the thickness of ink lay that causes being positioned at the edge is thicker, and the OCA optical cement 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 optical cement that also needs to fill ink lay of lower floor, thereby cause OCA optical cement 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 optical cement, 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 mobile phone capacitance touch screen, and this mobile phone has reduced the use amount of OCA optical cement with capacitance touch screen, has avoided the generation of bubble, simultaneously, also enhances productivity and yield.

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

Surface coverage one ink lay that described second plastic film layers contacts with an OCA optical cement, 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, second plastic film layers are PET film, polypropylene film, polyethylene film or polyvinyl chloride film.

2. in the such scheme, described OCA optical cement (a 4) thickness is 25 ~ 200 microns.

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

The utility model mobile phone capacitance touch screen, bonding between its second plastic film layers and first plastic film layers by an OCA optical cement, the upper surface of second plastic film layers is bonding by the 2nd OCA optical cement and glass-based flaggy, surface coverage one ink lay that second plastic film layers contacts with an OCA optical cement, 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 optical cement, avoided the generation of bubble, simultaneously, also enhance productivity and yield.

Description of drawings

Accompanying drawing 1 is the utility model mobile phone electric capacity touch screen structure synoptic diagram.

In the above accompanying drawing: 1, second plastic film layers; 2, first plastic film layers; 3, LCD liquid crystal display; 4, an OCA optical cement; 5, the 2nd OCA optical cement; 6, glass-based flaggy; 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 mobile phone capacitance touch screen, comprise glass-based flaggy 6, have first plastic film layers 2, second plastic film layers 1 and the LCD liquid crystal display 3 of ITO sensing electrode layer, bonding by an OCA optical cement 4 between described second plastic film layers 1 and first plastic film layers 2, the upper surface of described second plastic film layers 1 is bonding with glass-based flaggy 6 by the 2nd OCA optical cement 5;

Surface coverage one ink lay 7 that described second plastic film layers 1 contacts with an OCA optical cement 4, this ink lay 7 is positioned at the fringe region of second plastic film layers 1, thereby forms viewing area 8 at described second plastic film layers, 1 middle section; A described OCA optical cement 4 thickness are 25 ~ 200 microns.

Above-mentioned first plastic film layers 2 is polypropylene film PP; Above-mentioned second plastic film layers 1 is PET film PET.

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

Above-mentioned first plastic film layers 2 is PET film PET; Above-mentioned second plastic film layers 1 is polypropylene film PP.

When adopting above-mentioned mobile phone to use capacitance touch screen, bonding between its second plastic film layers and first plastic film layers by an OCA optical cement, the upper surface of second plastic film layers is bonding by the 2nd OCA optical cement and glass-based flaggy, surface coverage one ink lay that second plastic film layers contacts with an OCA optical cement, 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 optical cement, 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. mobile phone capacitance touch screen, it is characterized in that: comprise glass-based flaggy (6), have first plastic film layers (2), second plastic film layers (1) and the LCD liquid crystal display (3) of ITO sensing electrode layer, bonding by an OCA optical cement (4) between described second plastic film layers (1) and first plastic film layers (2), the upper surface of described second plastic film layers (1) is bonding by the 2nd OCA optical cement (5) and glass-based flaggy (6);

Surface coverage one ink lay (7) that described second plastic film layers (1) contacts with an OCA optical cement (4), this ink lay (7) is positioned at the fringe region of second plastic film layers (1), thereby forms viewing area (8) at described second plastic film layers (1) middle section.

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

3. mobile phone capacitance touch screen according to claim 1 is characterized in that: described OCA optical cement (a 4) thickness is 25 ~ 200 microns.