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goa circuit and liquid crystal display

A liquid crystal display and circuit technology, which is applied in the field of liquid crystal display, can solve the problems of incomplete shutdown, low charging efficiency of scanning control signal nodes, etc., and achieve the effect of improving the effective charging rate

Active Publication Date: 2022-04-26
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present application provides a GOA circuit and a liquid crystal display, which can solve the charging efficiency of the scanning control signal node Q(n) caused by incomplete closing of the switching tubes related to the scanning control signal node Q(n) of each level in the prior art. Lowering and other issues

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0023] refer to figure 1 , figure 1 It is a schematic diagram of the structure of the GOA unit in the first embodiment of the GOA circuit in the present application. It can be understood that the GOA circuit in the present application includes a plurality of cascaded GOA units, wherein the N-level GOA units of the N-level horizontal scan line G in the display area (N) Charging.

[0024] Optionally, the N-level GOA unit includes an N-level pull-u...

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Abstract

The application discloses a GOA circuit and a liquid crystal display. The GOA circuit includes a cascaded GOA unit, and the N-level GOA unit charges the N-level horizontal scanning line G(N) of the display area, and the N-level GOA unit includes N Level pull-up control circuit, N-level pull-up circuit, N-level transmission circuit, N-level pull-down circuit and N-level pull-down maintenance circuit, N is a positive integer; the N-level pull-down maintenance circuit is in the N-4 level transmission circuit Under the control of the first stage transmission signal Cout(N-4) or the second stage transmission signal Cout2(N-4) and the second gate signal node QB(N), the first gate signal node Q(N ) and the potential of the Nth level horizontal scan line G(N) is maintained at the first DC low voltage ( VGL1 ). Through the above method, the present application can improve the effective charging rate of the first gate signal node Q(N).

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a GOA circuit and a liquid crystal display. Background technique [0002] A thin film crystal liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer screen, etc., occupy a dominant position in the field of flat panel display. [0003] Active matrix liquid crystal display is a commonly used display device, including multiple pixels, each pixel is electrically connected to a thin film transistor (TFT), the gate (Gate) of the thin film transistor (Gate) is connected to the horizontal scanning line, and the source (Source) is connected to The data line in the vertical direction is connected to the pixel electrode with the drain electrode (Drain). Applying sufficient...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/3688
Inventor 王宪韩佰祥
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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