CN201307280Y

CN201307280Y - Touch screen

Info

Publication number: CN201307280Y
Application number: CNU2008202139682U
Authority: CN
Inventors: 廉健; 张磊; 梁爱军
Original assignee: SHENZHEN DPT-TOUCH Co Ltd
Current assignee: Ganzhou DPT Technology Co., Ltd.
Priority date: 2008-11-28
Filing date: 2008-11-28
Publication date: 2009-09-09
Anticipated expiration: 2018-11-28

Abstract

The utility model discloses a touch screen, comprising an upline conducting layer with a conducting surface, a downline conducting layer with a conducting surface and a circuit layer, the circuit layer is arranged on a flexible printed wiring board, and the flexible printed wiring board is positioned between the upline conducting layer and the downline conducting layer, and the conducting surfaces of the upline conducting layer and the downline conducting layer are respectively adhered to the upper surface an the lower surface of the circuit layer. The utility model avoids complex processes of a printed circuit on the conducting surfaces of the upline conducting layer and the downline conducting layer, improves the production efficiency, and reduces the fraction defective and costs brought by the complex processes.

Description

Touch-screen

Technical field

The utility model design touch-screen field relates in particular to the simple touch-screen of a kind of manufacture craft.

Background technology

Touch-screen is the input equipment that can finish corresponding operating under the institute visual interface touches, and it can make simple to operate, visual, directly perceived to system.With reference to figure 1, this figure is the structural representation of an embodiment of touch-screen of prior art, as shown in the figure, the circuit layer of touch-screen be printed on the conductive layer of reaching the standard grade (ito thin film) 11 respectively and the conducting surface of line conductive layer 12 (glass) that rolls off the production line on and draw flexible printer circuit (FPC) lead-in wire 13 from the touch-screen edge.

Because at the process complexity of the conducting surface layer printed circuit board of described ito glass (G) and ito thin film (FILM), cause that its production efficiency is low, fraction defective is high, cost is high.

The utility model content

Technical problem to be solved in the utility model is: a kind of touch-screen is provided, and this touch-screen can realize by simple manufacture craft, and the production efficiency height, fraction defective is low, cost is low.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of touch-screen, include the conductive layer of reaching the standard grade that has conducting surface, conductive layer and circuit layer roll off the production line, described circuit layer is arranged on the flexible printed wiring board, and described flexible printed wiring board is positioned at the conducting surface of described the reach the standard grade conductive layer and middle, the described upper and lower line conductive layer of conductive layer that rolls off the production line and fits with the upper and lower surface of circuit layer respectively.

The beneficial effects of the utility model are:

Embodiment of the present utility model is by being arranged on circuit layer on the FPC, thereby avoided the complicated technology of P.e.c. on the conducting surface of upper and lower line conductive layer, improved production efficiency, reduced the fraction defective and the cost that bring because of complicated technology.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Description of drawings

Fig. 1 is the structural representation of the touch-screen of prior art.

Fig. 2 is the three-dimensional exploded view of the embodiment of touch-screen that provides of the utility model.

Fig. 3 is the vertical view of the embodiment of touch-screen that provides of the utility model.

Fig. 4 is the side view of the embodiment of touch-screen that provides of the utility model.

Fig. 5 is the upward view of the embodiment of touch-screen that provides of the utility model.

Fig. 6 is the vertical view of FPC among embodiment of touch-screen of providing of the utility model.

Fig. 7 is the side view of FPC among embodiment of touch-screen of providing of the utility model.

Fig. 8 is the upward view of FPC among embodiment of touch-screen of providing of the utility model.

Embodiment

With reference to figure 1, this figure is the three-dimensional exploded view of the embodiment of touch-screen that provides of the utility model; As shown in the figure, the main body of present embodiment mainly is made of three-decker, promptly the conductive layer 21 of reaching the standard grade from top to down, flexible printed wiring board (FPC) 23, conductive layer 22 rolls off the production line.

During specific implementation, respectively available double faced adhesive tape 24 is fitted between the conducting surface of described flexible printed wiring board and described upper and lower line conductive layer.

In addition, in order to protect FPC plate 23,24 can also be provided with one deck coverlay 25 respectively between the double faced adhesive tape of this FPC plate 23 and described upper and lower line conductive layer.

During specific implementation, the described conductive layer of reaching the standard grade can adopt ito thin film common in the prior art; The described conductive layer that rolls off the production line also can adopt ito glass common in the prior art, ITO polycarbonate (PC) or ITO polymethylmethacrylate (PMMA) material etc.

The key distinction of present embodiment and prior art is, is different from the prior art circuit layer is printed on respectively on the described upper and lower line conductive layer, draws the FPC lead-in wire again from the edge of touch-screen; But circuit layer is set directly on the FPC, the conducting surface of its conductive layer of reaching the standard grade without any need for printing treatment, directly make reach the standard grade conductive layer and FPC combination by applying, its conductive layer that rolls off the production line only need with FPC pressing mutually, just have been finished the FEOL of touch-screen through behind the insulating point silk screen printing process; And directly carrying out moulding to the touch screen base plate that posts, last part technology gets final product.The circuit typography of FPC has directly comprised the circuit layer printing of touch-screen in the present embodiment.When pressing, conducting resinl on the FPC by hot pressing make in the conducting resinl gold goal with on the roll off the production line conducting surface of conductive layer fully contact, and then realized the conducting of touch-screen, and this kind contact is comparatively tight, with linear value, contact resistance value and the loop resistance value that has guaranteed touch-screen.

Manufacturing process of the present utility model compared with prior art, owing to adopted the FPC circuit structure, thereby the 20 road typographies of layer printed circuit board on upper and lower line conductive layer by prior art shorten to 2 road typographies of layer printed circuit board on FPC, thus the function and the bad order phenomenon that have caused in the process of P.e.c. on having avoided on upper and lower line conductive layer and reduced because the bad phenomenon that the people causes for operation; In addition, the aging technology of conductive layer (ito thin film) because manufacturing process of the present utility model has been avoided reaching the standard grade, and then avoided it because of aging check surface, the anti-blue light phenomenon that causes, improve the quality that touch-screen is produced greatly, and reduced production cost.

The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.

Claims

1, a kind of touch-screen includes the conductive layer of reaching the standard grade that has conducting surface, roll off the production line conductive layer and circuit layer, it is characterized in that:

Described circuit layer is arranged on the flexible printed wiring board, and described flexible printed wiring board is positioned at the conducting surface of described the reach the standard grade conductive layer and middle, the described upper and lower line conductive layer of conductive layer that rolls off the production line and fits with the upper and lower surface of circuit layer respectively.

2, touch-screen as claimed in claim 1 is characterized in that: fit with double faced adhesive tape respectively between the conducting surface of described flexible printed wiring board and described upper and lower line conductive layer.

3, touch-screen as claimed in claim 2 is characterized in that: also be respectively arranged with one deck coverlay between the double faced adhesive tape of described flexible printed wiring board and described upper and lower line conductive layer.

4, as each described touch-screen among the claim 1-3, it is characterized in that: the described conductive layer of reaching the standard grade is an ito thin film.

5, as each described touch-screen among the claim 1-3, it is characterized in that: the described conductive layer that rolls off the production line is ito glass, ITO polycarbonate or ITO polymethylmethacrylate.