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Gate drive circuit and touch display device

A gate drive circuit and a drive circuit technology are applied in the field of gate drive circuits, touch display screens, and gate drive circuit units

Active Publication Date: 2019-08-16
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present application provides a gate drive circuit unit, a gate drive circuit, a display screen and a display device, which solves the problem that each group of gate drive circuits must have an initial pulse signal when the TDM working mode is applicable, and reduces The benefits of reducing the number of peripheral ICs and their connection lines, reducing the frame of the display module, and reducing manufacturing costs

Method used

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  • Gate drive circuit and touch display device
  • Gate drive circuit and touch display device
  • Gate drive circuit and touch display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Please refer to image 3 , image 3 It is a schematic structural diagram of a gate driving circuit unit provided by an embodiment of the present application, which includes a touch storage part 01 , a driving part 02 and a low level maintaining part 03 , which will be described in detail below. The touch storage part 01 is used to respond to a first synchronous signal TP1, receive and store an initial voltage signal in the scanning sampling phase, maintain the initial voltage signal in the touch sensing phase, and respond to a second synchronous signal TP2, The starting voltage signal is sent out during the charge transfer phase. The driving part 02 is used to receive the initial voltage signal during the charge transfer phase, so as to raise the gate potential of the driving part 02 to a high level, and respond to the first clock signal CK1 to pull up Phase output scan signal G N , where the scan signal G N It can be fed back to the gate potential of the driving pa...

Embodiment 2

[0091] The present application provides a gate drive circuit, including N-level cascaded gate drive circuit units as described above, a first clock line, a second clock line, a third clock line, a first synchronization signal line, a second synchronization A signal line and a start signal line; where N is a positive number greater than 0, and n is a positive integer greater than 0 and less than N; the start signal line is used to provide an initial voltage signal for the first-level gate drive circuit unit, so The first clock line, the second clock line and the third clock line are respectively used to provide the gate drive circuit unit with a first clock signal CK1, a second clock signal CK2 and a third clock signal CK3; The first synchronization signal line is used to provide the first synchronization signal TP1 for the gate drive circuit unit; the second synchronization signal line is used to provide the second synchronization signal TP2 for the gate drive circuit unit; the...

Embodiment 3

[0095] The present application provides a touch display screen, including the gate driving circuit described in any one of the embodiments herein.

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Abstract

The invention discloses a gate drive circuit unit, a gate drive circuit, a display screen and a display device. The gate drive circuit unit comprises a touch control storage part which is used for responding to a first synchronous signal TP1, receiving and storing an initial voltage signal at a scanning sampling stage, keeping an initial voltage signal at a touch control induction stage and responding to a second synchronous signal TP2 to send out the initial voltage signal; a driving part which is used for receiving an initial voltage signal so as to raise the grid potential to a high level,responding to a first clock signal CK1, outputing a scanning signal GN, feeding back the scanning signal GN to the grid potential, and booting and pulling up the grid potential so as to accelerate theoutput of the scanning signal GN; a low level maintaining part which is used for responding to a third clock signal CK3, pulling down the scanning signal GN and maintaining the scanning signal GN ata low level and is used for responding to a starting signal, pulling down the scanning signal GN and maintaining the scanning signal GN at the low level, wherein the starting signal is generated by coupling the high level of the first clock signal CK1 to an internal node PN of the low level maintaining part through the touch control storage part.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a gate drive circuit unit, a gate drive circuit and a touch display screen. Background technique [0002] In recent years, since the gate drive circuit integrated with thin-film transistor (TFT) can reduce the number of peripheral ICs and their connection lines, reduce the frame of the display module, and reduce the manufacturing cost, the gate drive circuit integrated with thin film transistor is widely used. applied to mobile displays. Although TFT was considered unsuitable for the design of integrated circuits for a long time in the past, this is because the commonly used TFT is a single conductivity type device, the conduction current is low and the stability of the device is poor; but when multiple clock signals are used, using After the voltage bootstrap circuit structure and dynamic circuit design, a high-performance TFT integrated gate drive circuit can be rea...

Claims

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Application Information

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IPC IPC(8): G09G3/20G06F3/041G06F3/044
CPCG09G3/20G06F3/0416G06F3/044
Inventor 张盛东廖聪维黄杰雷腾腾杨激文
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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