Unlock instant, AI-driven research and patent intelligence for your innovation.

GOA circuit, TFT substrate and display device

A circuit and high-voltage technology, which is applied in the field of TFT substrates and display devices, and GOA circuits, can solve problems such as instability of GOA circuits, and achieve the effect of improving stability

Active Publication Date: 2019-07-05
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a GOA circuit, a TFT substrate and a display device to solve the problem of instability of the existing GOA circuit

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • GOA circuit, TFT substrate and display device
  • GOA circuit, TFT substrate and display device
  • GOA circuit, TFT substrate and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are only for reference The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the figures, structurally similar elements are denoted by the same reference numerals.

[0032] see figure 2 , is a schematic structural diagram of the GOA circuit provided by the embodiment of the present invention.

[0033] The GOA circuit provided by the embodiment of the present invention includes a plurality of cascaded GOA units, and the nth level GOA unit includes a pull-up control module 21, a pull-up module 22, a bootstrap module 23, a download ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a GOA (Gate Driver on Array) circuit, a TFT (Thin Film Transistor) substrate and a display device. The GOA circuit comprises a plurality of cascaded GOA units; the nth GOA unitcomprises a pull-up control module used for inputting direct-current high voltage and adjusting the conduction voltage to output a stable pull up control signal when the n-4th-level level transmission signal is at a high potential, wherein the n is greater than 4; a pull-up module which is used for outputting a scanning signal of the level according to the pull-up control signal and the clock signal; a bootstrap module which is used for maintaining the pull-up control signal at a high potential during the output period of the scanning signal of the stage; a downloading module which is used for outputting a stage transmission signal according to the clock signal and the low-potential signal; a pull-down module which is used for pulling down the pull-up control signal to a low potential according to the scanning signal of the current stage and the (n + 4) th stage of scanning signal; and a pull-down maintaining module which is used for maintaining the pull-up control signal at a low potential so as to improve the stability of the GOA circuit.

Description

technical field [0001] The invention relates to the technical field of display panels, in particular to a GOA circuit, a TFT substrate and a display device. Background technique [0002] Gate Driver On Array, referred to as GOA, is to use the existing thin film transistor liquid crystal display array process to manufacture the gate row scanning drive signal circuit on the array substrate to realize the driving method of progressive scanning of the gate. [0003] Since GOA technology has the advantages of saving gate chips and realizing narrow edges, and GOA technology has been widely used in panel design, it is particularly necessary to continuously optimize the GOA circuit to make GOA performance more stable. However, if figure 1 As shown, the gate of the thin film transistor T11 in the pull-up control module 11 is connected to the n-4th level scan signal G(n-4), and the drain is connected to the n-4th level transmission signal ST(n-4), When G(n-4) is at a high potential,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3677
Inventor 奚苏萍王添鸿
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD