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goa circuit structure

A circuit structure and circuit technology, applied to static indicators, instruments, etc., can solve problems affecting output waveforms, etc.

Active Publication Date: 2020-05-22
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual situations, the GOA circuit includes many resistors and capacitors, and the stage signal output terminal ST(N-4) and the gate will be caused by the resistor and capacitor delay (RC delay). The signal output terminal G(N-4) will not drop from a high potential to a low potential instantaneously, but will become a slowly falling voltage. During this process, the thin film transistor T11 is still slightly turned on, which will cause the gate The potential drop of the pole signal point Q(n) affects the turn-on of the thin film transistor T21 of the pull-up unit 12, thereby affecting the output waveform of the gate signal output terminal G(n) of the nth-level GOA circuit

Method used

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Embodiment Construction

[0022] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. Furthermore, the directional terms mentioned in the present invention are, for example, up, down, top, bottom, front, back, left, right, inside, outside, side, surrounding, central, horizontal, transverse, vertical, longitudinal, axial, The radial direction, the uppermost layer or the lowermost layer, etc. are only directions referring to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0023] Please refer to image 3 Shown is a schematic diagram of a preferred embodiment of the GOA circuit structure of the present invention. The GOA circuit structure of the present invention is a plurality of cascaded GOA circuits, wherein the nth level GOA circuit controls the charging of the nth lev...

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Abstract

The invention discloses a GOA circuit structure. The GOA circuit structure includes a pull-up control unit, a pull-up unit, a transmission unit, a pull-down unit, a pull-up maintenance unit and an additional thin film transistor. By arranging the additional thin film transistor and electrically connecting a control signal terminal to the gate of the additional thin film transistor, the interference with the output waveform of the gate signal output terminal of the GOA circuit structure can be reduced.

Description

technical field [0001] The present invention relates to a GOA circuit structure, in particular to a GOA circuit structure for improving signal point Q(n) waveform. Background technique [0002] The working principle of the liquid crystal panel is to pour liquid crystal molecules between the thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate) and the color filter substrate (Color Filter, CF), and apply a driving voltage on the two substrates to Control the rotation direction of the liquid crystal molecules, and refract the light from the backlight module to produce a picture. [0003] There are multiple pixels arranged in an array in the liquid crystal panel, and 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 vertical direction. The data line, the drain (Drain) is conne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/3677G09G2310/0264G09G2310/0286
Inventor 陈帅
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD