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A touch display screen and its time-sharing driving method

A touch display, time-sharing driving technology, applied in the field of circuits, can solve the problems of horizontal stripes on the touch display, and achieve the effect of solving the horizontal stripes

Active Publication Date: 2017-02-15
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a touch screen and its time-sharing driving method, which can effectively solve the problem in the prior art that horizontal stripes will appear on the touch screen during the display process due to the long touch phase.

Method used

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  • A touch display screen and its time-sharing driving method
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  • A touch display screen and its time-sharing driving method

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Embodiment Construction

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the touch display screen provided by the present invention and its time-sharing driving method will be described in detail below with reference to the accompanying drawings.

[0032] figure 1 It is a schematic diagram of the driving timing corresponding to two consecutive driving cycles of the touch display screen in the prior art and the signals in the corresponding gate lines and touch scanning electrodes, as shown in FIG. figure 1 Shown, T 11 and T 12 Respectively represent the previous driving cycle T 1 of the display phase and the touch phase, T 21 and T 22 Respectively represent the latter driving cycle T 2 CLK and CLKB respectively represent the first clock signal and the second clock signal. The first clock signal CLK and the second clock signal CLKB are two signals with opposite timing, which are used to control the gate drive circuit. The out...

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PUM

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Abstract

The invention discloses a touch display screen and a time-sharing drive method thereof. The touch display screen comprises a grid drive circuit, a touch scanning drive circuit and a touch signal transmission circuit, and the touch signal transmission circuit, the grid drive circuit and the touch scanning drive circuit are connected. The drive period of the touch display screen comprises a display stage and touch stage, and the touch scanning drive circuit outputs a first touch scanning signal to a touch scanning electrode in the touch display screen and outputs a second touch scanning signal to the touch signal transmission circuit in the touch stage. In the touch stage, the touch signal transmission circuit transmits the received second touch scanning signal to pull-up nodes of shifting registers on the next stage of N cascaded shifting registers, so that the pull-up nodes are changed, and voltage of the pull-up nodes is maintained. According to the technical scheme of the touch display screen and the time-sharing drive method of the touch display screen, horizontal strips can be effectively avoided in the display process of the touch display screen.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a touch display screen and a time-sharing driving method thereof. Background technique [0002] With the popularization of smart phones, touch display screens have also been widely used. When driving the touch display screen, it is usually necessary to perform time-sharing driving on the touch display screen. Specifically, each driving cycle of the touch screen includes a display phase and a touch phase. During the display phase, the gate drive circuit of the touch screen provides display scan signals for the gate lines of the touch screen for The touch display screen realizes the display function; in the touch stage, the touch scan driving circuit of the touch screen provides the first touch scan signal for the touch scan electrodes of the touch screen, so that the touch screen can realize touch control. control function. Contents of the invention [0003] The present inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20
Inventor 董向丹龙跃王杨
Owner BOE TECH GRP CO LTD