CN201812112U

CN201812112U - Capacitive touch screen

Info

Publication number: CN201812112U
Application number: CN2010202391365U
Authority: CN
Inventors: 姜苓秀
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-25
Filing date: 2010-06-25
Publication date: 2011-04-27
Anticipated expiration: 2020-06-25

Abstract

The utility model discloses a capacitive touch screen. The touch screen comprises a transparent glass substrate and a liquid crystal cell, wherein, a bottom polarizer is arranged on the back surface of the liquid crystal cell; the liquid crystal cell is manufactured by adopting a standard process, that is, liquid crystal is poured between two transparent glass plates before the transparent glass plates are sealed, and transparent conducting layers are arranged on the inner surfaces of the two transparent glass plates; a transparent conducting layer is arranged on one surface of the transparent glass substrate; the surface of the liquid crystal cell without the polarizer is bonded with the glass substrate; and a surface polarizer is arranged on the outer surface of the transparent glass substrate after the transparent glass substrate is bonded with the liquid crystal cell. By adopting the structure, one-time masking and film coating is reduced, that is, two silica insulating layers, one-time indium tin oxide (ITO) film coating, and one-time metal layer film coating are not needed; two-time overlay processes are reduced, thereby saving costs; and since grounding electrode pins are arranged on the edges of the transparent glass substrate, the touch screen effectively performs a noise reduction function.

Description

Capacitance touch screen

Technical field

The utility model relates to a kind of display screen accessory, is specifically related to a kind of capacitance touch screen.

Background technology

ITO, promptly tin indium oxide is widely used on the touch-screen.At present, capacitance touch screen is used for products such as the display screen, toy display screen of LCD TV, mobile phone, integral computer, household electrical appliance in a large number, and the manufacturing process that this series products adopts is generally:

1, on glass substrate, plates silicon dioxide (protective seam, what have does not have) and plate tin indium oxide (ITO) glass substrate again;

2, (1) material is carried out photoengraving pattern (carving needed pattern and backguy) with the film;

3, to mask plating layer of silicon dioxide (insulation course) above the ITO after (2) photoetching, plate indium oxide layer tin (ITO) again;

4, the thick material of (3) plated film is carried out photoetching, (carving needed pattern and backguy) again;

5,, make lead-in wire and electrode PIN thereof again by lithography to plating molybdenum aluminium molybdenum (metal level, resistance is little) on the material after (4) photoetching again;

6, to mask plating layer of silicon dioxide (protective seam) above the material after (5) photoetching;

7, lead-in wire FPC (flexible circuit board) links to each other with the electrode PIN of touch-screen with ACF hot pressing, makes touch-screen.The touch-screen complex process, complex structure, the cost height that adopt aforesaid way to make.

The utility model content

Given this, the purpose of this utility model is to provide a kind of technology simple, simple in structure and cost is lower, the capacitance touch screen of decrease of noise functions is arranged.

In order to achieve the above object, the technical scheme that the utility model adopted is, a kind of capacitance touch screen, comprise transparent glass substrate, liquid crystal cell, the back side of described liquid crystal cell is provided with end polaroid, and described liquid crystal cell adopts standard technology to make, and promptly the perfusion liquid crystal seals then between two transparency glass plates, and be provided with transparency conducting layer on the inside surface of two transparency glass plates, described transparent glass substrate one surface is provided with transparency conducting layer; Surface and glass substrate that liquid crystal cell is not established polaroid fit together, and the outside surface of the transparent glass substrate after the two applying is provided with the face polaroid.

Further, described transparency conducting layer is located on the transparent glass substrate, and between face polaroid and transparent glass substrate.

Further, described transparency conducting layer is located on the transparent glass substrate, and between liquid crystal cell and transparent glass substrate.

Further, described end polaroid is reflection or semi-transparent or full-transparency type.

Further, the edge of described transparent glass substrate is provided with and draws ground electrode pin, i.e. grounding electrode pin.

Further, described transparent glass substrate and the liquid crystal cell back of fitting is connected with controller by metal PIN pin or conductive adhesive tape or zebra paper.

The utility model beneficial effect is: adopt said structure, reduced the mask plated film one time, promptly do not need silicon dioxide insulating layer, once oxidation indium tin plated film, a metal level plated film.Reduced alignment process twice, saved cost,, played the noise reduction effect effectively because be provided with grounding electrode pin at the edge of transparent glass substrate.

Description of drawings

Fig. 1 is a floor map of the present utility model;

Fig. 2 is the first enforcement illustration of the present utility model;

Fig. 2 a is the partial enlarged drawing of Fig. 2;

Fig. 3 is the second enforcement illustration of the present utility model.

Embodiment

In order to make those skilled in the art better understand the utility model, now conjunction with figs. elaborates, please refer to shown in Figure 1, the utility model discloses a kind of capacitance touch screen, a kind of capacitance touch screen, comprise transparent glass substrate 1, liquid crystal cell 2, the back side of described liquid crystal cell 2 is provided with end polaroid 3, described liquid crystal cell 2 adopts standard technology to make, promptly the perfusion liquid crystal seals then between two transparency glass plates 21,22, and on the inside surface of two transparency glass plates 21,22, be provided with transparency conducting layer 2a, wherein:

Described transparent glass substrate 1 one surfaces are provided with transparency conducting layer 4; Surface and transparent glass substrate 1 that liquid crystal cell 2 is not established end polaroid 3 fit together, and the outside surface of the transparent glass substrate 1 after the two applying is provided with face polaroid 5.

According to different requirements, polaroid of the described end 3 is reflection or semi-transparent or full-transparency type.

Adopt photoetching process on the transparency conducting layer 4 of being located at transparent glass substrate 1, to etch button 4a and ground-electrode 4b, described button 4a is connected with the button electrode leading foot 4a ' that is located at transparent glass substrate 1 edge, ground-electrode 4b and described transparent glass substrate 1 edge draw ground electrode pin 4b ', promptly grounding electrode pin is connected.

Please refer to shown in Figure 2ly, be first embodiment of the present utility model, described transparency conducting layer 4 is located on the transparent glass substrate 1, and between face polaroid 5 and transparent glass substrate 1.

Please refer to shown in Figure 3ly, described transparency conducting layer 4 is located on the transparent glass substrate 1, and between liquid crystal cell 2 and transparent glass substrate 1.

Described

transparency conducting layer

4,2a adopt ITO, i.e. tin indium oxide or IZO, i.e. indium zinc oxide.

Described transparent glass substrate 1 and liquid crystal cell 2 back of fitting is connected with controller by metal PIN pin or conductive adhesive tape or zebra paper.

The utility model adopts following technology to make:

1, the standard technology by liquid crystal display produces the liquid crystal cell 2 that filling has liquid crystal;

2, end polaroid 3 is attached to the back side of the described liquid crystal cell 2 of step 1;

3, polaroid is not pasted in liquid crystal cell 2 fronts;

4, adopt the method for photoetching to manufacture on the transparent glass substrate 1 that has ITO conductive layer (being described transparency conducting layer) as the figure and the circuit (ground-electrode) of touch key-press;

5, liquid crystal display is used face polaroid 5 is attached to above the described material of step 4;

6, face polaroid 5 can be attached to any one side of the described material of step 4;

7, face polaroid 5 is put superficies at transparent glass substrate 1;

8, the touch-screen (transparent glass substrate 1 that promptly has transparency conducting layer 4) that will not have the liquid crystal cell 2 of face polaroid 5 and have a face polaroid 5 fits together;

9, the input of liquid crystal cell 2 and touch-screen is connected modes such as employing metal PIN pin, conductive adhesive tape, zebra paper and is connected with controller.

The utility model that adopts above-mentioned technology to make, simple in structure, manufacture craft is simple, and cost is low, has the effect of noise reduction.

Claims

1. a capacitance touch screen comprises transparent glass substrate, liquid crystal cell, and the back side of described liquid crystal cell is provided with end polaroid, it is characterized in that, a described transparent glass substrate wherein surface is provided with transparency conducting layer; Surface and glass substrate that liquid crystal cell is not established polaroid fit together, and the outside surface of the transparent glass substrate after the two applying is provided with the face polaroid.

2. a kind of capacitance touch screen as claimed in claim 1 is characterized in that described transparency conducting layer is located on the transparent glass substrate, and between face polaroid and transparent glass substrate.

3. a kind of capacitance touch screen as claimed in claim 1 or 2 is characterized in that described transparency conducting layer is located on the transparent glass substrate, and between liquid crystal cell and transparent glass substrate.

4. a kind of capacitance touch screen as claimed in claim 1 is characterized in that, polaroid of the described end is reflection or semi-transparent or full-transparency type.

5. a kind of capacitance touch screen as claimed in claim 1 is characterized in that, the edge of described transparent glass substrate is provided with draws the ground electrode pin.

6. a kind of capacitance touch screen as claimed in claim 1 is characterized in that, described transparent glass substrate and the liquid crystal cell back of fitting is connected with controller by metal PIN pin or conductive adhesive tape or zebra paper.