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Touch display device

A touch display device, a technology for displaying touch, applied in static indicators, optics, instruments, etc., can solve the problems of poor anti-interference performance, complex manufacturing process, low scanning frame rate, etc., to reduce thickness and weight, and save materials. , the effect of improving the signal-to-noise ratio

Inactive Publication Date: 2013-09-04
FOCALTECH ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing capacitive touch screens generally have problems such as poor anti-interference performance, low scanning frame rate, large volume and complicated manufacturing process.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1 of the present disclosure provides a touch display device, including:

[0053] A display touch screen, the display touch screen includes a first substrate 11, a second substrate 13, a liquid crystal layer 15 disposed between the first substrate and the second substrate, and a plurality of pixel units, the display touch screen also includes a plurality of a common electrode 17, and the plurality of common electrodes are arranged in a two-dimensional array; and

[0054] A display touch control circuit, the display touch control circuit includes a display control circuit and a touch control circuit, the display touch control circuit is connected to the plurality of common electrodes through wires in the following manner: in the display stage, the plurality of common electrodes connected to the common level provided to the display control circuit; in the touch sensing phase, each of the plurality of common electrodes is respectively connected to the touch contr...

Embodiment 2

[0078] FIG. 2( a ) is a schematic side view of an example of a touch display device according to Embodiment 2 of the present disclosure.

[0079] As shown in Figure 2(a), the touch display device includes a first substrate 21, a second substrate 23, a liquid crystal layer 25 sandwiched between the two substrates, a common electrode layer 27, a thin film transistor layer and a color filter (CF )Floor. The common electrode layer is placed on the same side of the thin film transistor layer as opposed to the liquid crystal layer. Optionally, the touch display device further includes a second polarizing layer, a first polarizing layer and a protective layer (COVER LENS). As an example, the touch display device has an IPS structure. The touch display device in this embodiment may also have an FFS structure.

[0080] A plurality of pixel units are formed on the thin film transistor layer.

[0081] A plurality of common electrodes are formed on the common electrode layer, and the ...

Embodiment 3

[0094] The touch display device according to this embodiment also has an IPS structure or an FFS structure. The difference between this embodiment and the second embodiment lies in the position of wire wiring. Figure 4 An example of wire wiring according to Embodiment 3 of the present disclosure is shown, and wires 501 - 503 are arranged on another layer for the common electrodes. Specifically, the wires are arranged on the same layer as the pixel electrodes, and the wires can be respectively connected to the common electrodes through through holes.

[0095] The material of the wires 501-503 can be metal oxide, such as indium tin oxide (ITO) or graphene, or metal. Preferably, the wires 501-503 are arranged directly under the black matrix. Arranging the wires under the black matrix can avoid the traces of ITO etching and the possible reflection of the metal wires.

[0096] For the description of other parts of this embodiment, please refer to Embodiment 2, which will not be...

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Abstract

An embodiment of the invention discloses a touch display device which comprises a displaying touch screen and a displaying touch control circuit. The displaying touch screen comprises a first substrate, a second substrate, a liquid crystal layer and a plurality of pixel units and further comprises a plurality of public electrodes, wherein the liquid crystal layer is arranged between the first substrate and the second substrate, and the plurality of public electrodes are distributed to form a two-dimensional array. The displaying touch control circuit comprises a displaying control circuit and a touch control circuit. The displaying touch control circuit is connected with the plurality of public electrodes through leads in the following modes: in the displaying stage, the plurality of public electrodes are connected onto a public level supplied to the displaying control circuit; in the touch sensing stage, each of the plurality of public electrodes are connected onto the touch control circuit respectively to serve as touch sensing electrodes. By means of the touch display device, the thickness and the weight of the touch display screen can be reduced, optical loss is decreased, and noises are lowered.

Description

technical field [0001] The present invention relates to the field of touch technology, in particular to a touch display device. Background technique [0002] At present, capacitive touch screens are widely used in various electronic products, and have gradually penetrated into various fields of people's work and life. The size of capacitive touch screens is increasing day by day, from 3 inches to 6.1 inches for smart phones, to about 10 inches for tablet computers, and the application fields of capacitive touch screens can be extended to smart TVs. However, existing capacitive touch screens generally have problems such as poor anti-interference performance, low scanning frame rate, large volume, and complicated manufacturing process. Contents of the invention [0003] In view of this, an embodiment of the present disclosure provides a touch display device capable of solving at least one of the above problems. [0004] The touch display device provided by the embodiment o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG02F1/13338G02F1/134309G02F1/134363G02F2201/121G06F3/0412G09G3/36G06F3/04164G06F3/04166G06F3/0443G06F3/0446G06F3/04184G06F3/0445
Inventor 莫良华欧阳广
Owner FOCALTECH ELECTRONICS
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