Touch display device and driving method thereof

A technology of a touch display device and a driving method, which is applied in control/adjustment systems, optics, instruments, etc., and can solve problems such as abnormal display of special-shaped touch display substrates

Active Publication Date: 2018-11-27
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention at least partly solves the problem of abnormal display caused by the inconsistent common voltage on the common electrode block in the existing special-shaped touch display substrate, and provides a touch display substrate and a driving method thereof

Method used

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  • Touch display device and driving method thereof
  • Touch display device and driving method thereof

Examples

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Embodiment 1

[0025] This embodiment provides a touch display device, including a touch display substrate 10 and a drive circuit 20 having a plurality of touch terminals P21 and at least one common voltage output terminal P22; the touch display substrate 10 includes a plurality of mutually insulated and complex Common electrode blocks used as touch electrodes, each common electrode block is connected to a touch terminal P21 through a touch line L; the common electrode block includes a plurality of non-special-shaped common electrode blocks 11 of the same shape, and at least one non-special-shaped Common electrode blocks with different shapes of special-shaped common electrode blocks 12, the number of non-special-shaped common electrode blocks 11 is greater than or equal to the number of the same type of special-shaped common electrode blocks 12; the touch display device also includes:

[0026] At least one switch unit 30, each switch unit 30 corresponds to at least one special-shaped common ...

Embodiment 2

[0047] This embodiment provides a driving method for a touch display device, the driving method is applied to the touch display device provided in Embodiment 1, and the driving method includes:

[0048] In the display stage, control the common voltage output terminal P22 to output the common voltage and control each switch unit 30 to connect the common electrode blocks controlled by it to the corresponding common voltage output terminal P22;

[0049] In the touch stage, the control switch unit 30 disconnects the common electrode blocks controlled by it from each other and from the corresponding common voltage output terminal P22.

[0050] That is, in the display stage, at least one common electrode block 12 with special shape and part of common electrode blocks 11 without special shape are driven by the same common voltage output terminal P22, and the consistency of the common voltages actually applied to them is improved.

[0051] In the touch stage, all the common electrode ...

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PUM

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Abstract

The invention provides a touch display device and a driving method thereof, belonging to the technical field of touch display, which can at least partially solve the problem that a common voltage of acommon electrode block in an existing touch display substrate is inconsistent in a display stage. The touch display substrate of the present invention includes at least one switching unit, At least one abnormal common electrode block and at least a part of non-abnormal common electrode block are correspond to each of that switching unit, and the switching unit is used for disconnecting each common electrode block correspond thereto from each other and from the common voltage output terminal, or turning on each common electrode block corresponding thereto and connecting the common electrode blocks to the same common voltage output terminal in common.

Description

technical field [0001] The invention belongs to the technical field of touch display, and in particular relates to a touch display device and a driving method of the touch display device. Background technique [0002] In an existing type of touch display substrate, a plurality of common electrode blocks insulated from each other are provided. The corresponding driving circuit is provided with multiple touch terminals, and each touch terminal is connected to a common electrode block. In the touch stage, these touch terminals output touch detection signals or receive touch sensing signals, so that the common electrode blocks are used as touch electrodes to realize touch control; in the display stage, these touch terminals output common voltages, so that the common electrodes The block acts as a common electrode to realize the display. Touch phases alternate with display phases. [0003] With the rise of special-shaped display screens, the shape of the display screen becomes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G02F1/1333G02F1/1343
CPCG02F1/13338G02F1/134309G06F3/0412G05F1/56G06F3/04166G06F3/044G06F3/0416
Inventor 宗少雷王洁琼孙继刚单伟星
Owner BOE TECH GRP CO LTD
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