Touch display circuit, driving method thereof, touch display panel and display device

A touch display and circuit technology, applied in static indicators, electrical digital data processing, cathode ray tube indicators, etc., can solve the problems of limiting the application of embedded technology, increasing wiring space, etc.

Active Publication Date: 2015-07-08
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the size of the display screen increases and the number of touch scanning lines Txn increases, the wiring for transmitting touch scanning signals to the touch scanning line Txn also increases accordingly, resulting in an increase in the space occupied by the wiring. , thus limiting the application of in-cell technology on large-size and narrow-frame displays

Method used

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  • Touch display circuit, driving method thereof, touch display panel and display device
  • Touch display circuit, driving method thereof, touch display panel and display device
  • Touch display circuit, driving method thereof, touch display panel and display device

Examples

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example 1

[0081] In the T1 phase of the touch phase, Input=1, Reset=0, CK=0, CKB=1, Change=0, Vref1=0. The second switching transistor M2 and the third switching transistor M3 are turned off. Since Input=1, the first switching transistor M1 is turned on, the potential of the pull-up node PU is pulled high, the fourth switching transistor M4 is turned on, and the turned-on fourth switching transistor M4 provides the signal of the first clock signal terminal CK to the touch signal output terminal Output, and because CKB=1, the fifth switch transistor M5 is turned on, and the turned-on fifth switch transistor M5 provides the signal of the first reference signal terminal Vref1 to the touch signal output terminal Output, so the touch The control signal output terminal Output outputs a low potential signal.

[0082] In the T2 phase of the touch phase, Input=0, Reset=0, CK=1, CKB=0, Change=0, Vref1=0. The first switching transistor M1, the second switching transistor M2 and the third switchi...

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PUM

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Abstract

The invention discloses a touch display circuit, a driving method thereof, a touch display panel and a display device. In the touch stage, a touch trigger module provides a signal at a signal trigger end for an upwards-pulled node, a first output module provides a signal of a first clock signal end for a touch signal output end, a reset module provides a signal of a first reference signal end for the upwards-pulled node, a second output module provides a signal of a second reference signal end for a touch signal output end, and therefore a touch function is achieved. In the display stage, a display switching module provides a signal of a public electrode signal end for the touch signal output end, and therefore a display function is achieved. Through the cooperation of all the modules, the time-share output of the touch signal and the public electrode signal is achieved at the touch signal output end, and therefore the touch display circuit simple in structure is obtained, and the narrow frame design of the touch display panel is facilitated.

Description

technical field [0001] The invention relates to the field of touch technology, in particular to a touch display circuit, a driving method thereof, a touch display panel and a display device. Background technique [0002] With the rapid development of display technology, touch screen panels (Touch Screen Panels) have gradually spread in people's lives. Currently, touch panels can be classified into: Add on Mode Touch Panel, On Cell Touch Panel, and In Cell Touch Panel according to their composition and structure. Among them, the plug-in touch screen is produced separately from the touch screen and the display screen, and then bonded together to form a display screen with touch function. The plug-in touch screen has disadvantages such as high production cost, low light transmittance, and thick modules. The embedded touch screen embeds the touch electrodes of the touch screen inside the display screen, which can reduce the overall thickness of the module and greatly reduce the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0412G06F3/04164G09G5/003G09G2300/0426G09G2310/08G11C11/02
Inventor 陈希
Owner BOE TECH GRP CO LTD
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