CN201126506Y

CN201126506Y - LCD display screen embedded with touch control circuit

Info

Publication number: CN201126506Y
Application number: CNU2007200597944U
Authority: CN
Inventors: 王嘉华
Original assignee: ZHONGSHAN MATRIX CRYSTAL CO Ltd
Current assignee: ZHONGSHAN MATRIX CRYSTAL CO Ltd
Priority date: 2007-11-13
Filing date: 2007-11-13
Publication date: 2008-10-01
Anticipated expiration: 2017-11-13

Abstract

The utility model discloses a liquid crystal display screen with a built-in touch control circuit, comprising an upper glass sheet and a lower glass sheet, wherein, the lower surface of the upper glass sheet and the upper surface of the lower glass sheet are plated with an indium oxide tin circuit which includes a display circuit and a touch control circuit, the display circuit is thread-engraved on the lower surface of the upper glass sheet and the upper surface of the lower glass sheet, the indium oxide tin touch control circuit is thread-engraved on the upper surface of the upper glass sheet and/or the lower glass sheet, the touch control circuit and the display circuit are in a same layer, thereby effectively using the space, increasing the application flexibility of the touch control technology, and compensating the fault of a resistor-type touch screen. The liquid crystal display screen with the built-in touch control circuit according to the utility model has advantages of no-abrasion of the touch control circuit, long service life, thin thickness, low cost, easy operation, hommization design, and wide market, thereby the liquid crystal display screen is capable of replacing traditional control keys and sliding bars.

Description

A kind of LCDs of embedded touch control circuit

Technical field

The utility model relates to the LCDs of a kind of display screen, particularly a kind of embedded touch control circuit.

Background technology

Along with the develop rapidly of liquid crystal industry, liquid crystal display device has infiltrated all trades and professions.When people need control the interface, often just need to use keyboard or button, and this moment, touch technology just rises thereupon, traditional resistive touch screen because serviceable life weak point, can not adapt to the application of household electrical appliances, vehicle-mounted and other industrial instrumentation.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides that a kind of thin thickness, cost are low, the LCDs of the embedded touch control circuit that is easy to control.

The technical scheme that its technical matters that solves the utility model adopts is:

A kind of LCDs of embedded touch control circuit, comprise upper glass plate and lower-glass sheet, upper glass plate lower surface and lower-glass sheet upper surface are coated with the tin indium oxide circuit, accompany between upper glass plate and the lower-glass sheet and reverse liquid crystal, and the edge that the tin indium oxide circuit is extended down to glass forms indium-tin oxide electrode; The upper glass plate upper surface is fitted with the face polaroid, and lower-glass sheet lower surface is fitted with end polaroid.

As further improvement of the utility model, described tin indium oxide circuit comprises display circuit that is used for LCD Controller and the touch-control circuit that is used to touch control, touch-control circuit comprises and is plated in the indium oxide block tin with certain area and capacitive reactance characteristic on glass that the edge that display circuit and touch-control circuit are extended down to glass forms indium-tin oxide electrode; Described display circuit silk is engraved in upper glass plate lower surface and lower-glass sheet upper surface; Described tin indium oxide touch-control circuit silk is engraved in upper glass plate lower surface and/or lower-glass sheet upper surface; Be coated with polyimide on the described tin indium oxide circuit.

The beneficial effects of the utility model are: the utility model comprises upper glass plate and lower-glass sheet, upper glass plate lower surface and lower-glass sheet upper surface are coated with the tin indium oxide circuit, the tin indium oxide circuit comprises display circuit and touch-control circuit, and the display circuit silk is engraved in upper glass plate lower surface and lower-glass sheet upper surface; Tin indium oxide touch-control circuit silk is engraved under the upper glass plate and/or lower-glass sheet upper surface, and touch-control circuit and display circuit have not only effectively utilized the space in same aspect, have also strengthened the touch technology application flexibility, have remedied the defective of resistive touch screen.The touch-control circuit of the LCDs of the utility model embedded touch control circuit does not have wearing and tearing, long service life, and thin thickness, cost are low, can substitute traditional control button, draw runner, are easy to control, and design more humanely, have vast market prospect.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a three-dimensional broken away view of the present utility model;

Fig. 2 is the utility model embodiment upper glass plate tin indium oxide line layer planimetric map;

Fig. 3 is the utility model embodiment lower-glass sheet tin indium oxide line layer planimetric map;

Fig. 4 is the utility model embodiment synoptic diagram.

Embodiment

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of LCDs of embedded touch control circuit, comprise upper glass plate 2 and lower-glass sheet 6, upper glass plate 2 lower surfaces and lower-glass sheet 6 upper surfaces are coated with tin indium oxide circuit 3, accompany between upper glass plate 2 and the lower-glass sheet 6 and reverse liquid crystal 5, the edge that tin indium oxide circuit 3 is extended down to glass forms indium-tin oxide electrode 9; Upper glass plate 2 upper surfaces are fitted with face polaroid 1, and lower-glass sheet 6 lower surfaces are fitted with end polaroid 7.

As further improvement of the utility model, described tin indium oxide circuit 3 comprises display circuit 31 that is used for LCD Controller and the touch-control circuit 32 that is used to touch control, touch-control circuit 32 comprises and is plated in the indium oxide block tin 321 with certain area and capacitive reactance characteristic on glass that display circuit 31 forms indium-tin oxide electrode with the edge that touch-control circuit 32 is extended down to glass; 31 of described display circuits are engraved in upper glass plate 2 lower surfaces and lower-glass sheet 6 upper surfaces; 32 on described tin indium oxide electric shock road is engraved in upper glass plate 2 lower surfaces and/or lower-glass sheet 6 upper surfaces; Special circumstances can increase silk-screen at last sheet glass 2, and the function of touch-control circuit is done some signs, also can carve the integrated circuit pin at upper glass plate 2 lower surfaces and/or lower-glass sheet 6 upper surface silks.

Indium-tin oxide electrode 9 can be connected to outside control class single-chip microcomputer by flexible circuit board 10 (being called for short FPC) or metal needle, and integrated circuit and the outside control class single-chip microcomputer that drives liquid crystal display coupled together.When conductor was approaching, the capacitive reactance characteristic of indium oxide block tin 321 will change, and this variation just can be passed to outside control class single-chip microcomputer by the tin indium oxide circuit, and control class single-chip microcomputer is made corresponding action, reaches the purpose of touch-control.

Be coated with polyimide 4 on the described tin indium oxide circuit 3; polyimide 4 is a kind of clear films (being called for short PI); polyimide 4 directly is coated on the tin indium oxide circuit, is used to protect the tin indium oxide circuit not to be corroded, and guarantees the consistance of liquid crystal 5 thickness of clamping between layer glass.

Light can be extracted out line source by the inclined to one side sheet 1 of face, line source sees through last sheet glass 2, and when tin indium oxide display circuit layer did not have making alive up and down, liquid crystal can produce deflection to the polarization direction of light, the direction of polarization is consistent with the angle of end polaroid, and light just can directly pass down sheet; And when when up and down the tin indium oxide circuit adds certain voltage, liquid crystal has lost the function to light deflection, and light is end polaroid only thoroughly just, shows and the function that does not show thereby reach.

About tin indium oxide touch-control circuit part, with a following example with explanation.Shown in accompanying drawing 2 to 5, it is the control interface of an air-conditioning remote controller, square indium

oxide block tin

321 and 321 liang of classes of serrate indium oxide block tin are arranged, square indium oxide block tin has enough big area, they have certain capacitive reactance characteristic, as conductor or finger when the indium oxide block tin 321, variation has taken place in the capacitive reactance characteristic on the indium oxide block tin 321, when external control class single-chip microcomputer is passed in this variation, single-chip microcomputer is just made corresponding action, for example, and when finger during near the square indium oxide block tin 321 below " light " character, just can be used for controlling the on and off of light, so just replace traditional button.For display serrate indium oxide block tin 321, when finger or conductor when sliding near their, the capacitive reactance variation of serrate indium oxide block tin 321 presents regularity, this regularity passes to external microcontroller, cooperates software control, can realize the adjusting that quantizes, the display sawtooth indium oxide block tin 321 below the displays temperature character for example, when finger slides in the above, just can realize the adjusting of temperature, replaced traditional slide block control.

Claims

1, a kind of LCDs of embedded touch control circuit, comprise upper glass plate (2) and lower-glass sheet (6), it is characterized in that upper glass plate (2) lower surface and lower-glass sheet (6) upper surface all are coated with tin indium oxide circuit (3), accompany between upper glass plate (2) and the lower-glass sheet (6) and reverse liquid crystal (5), the edge that tin indium oxide circuit (3) is extended down to glass forms indium-tin oxide electrode (9), upper glass plate (2) upper surface is fitted with face polaroid (1), and lower-glass sheet (6) lower surface is fitted with end polaroid (7).

2, the LCDs of a kind of embedded touch control circuit according to claim 1 is characterized in that described tin indium oxide circuit (3) comprises display circuit (31) that is used for LCD Controller and the touch-control circuit (32) that is used to touch control; Touch-control circuit (32) comprises and is plated in the indium oxide block tin (321) with certain area and capacitive reactance characteristic on glass that display circuit (31) forms indium-tin oxide electrode (9) with the edge that touch-control circuit (32) is extended down to glass.

3, the LCDs of a kind of embedded touch control circuit according to claim 2 is characterized in that described display circuit (31) silk is engraved in upper glass plate (2) lower surface and lower-glass sheet (6) upper surface.

4, the LCDs of a kind of embedded touch control circuit according to claim 2 is characterized in that described tin indium oxide touch-control circuit (32) silk is engraved in upper glass plate (2) lower surface and/or lower-glass sheet (6) upper surface.

5,, it is characterized in that being coated with on the described tin indium oxide circuit (3) polyimide (4) according to the LCDs of the arbitrary described a kind of embedded touch control circuit of claim 1 to 4.