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GOA unit and driving method thereof

A driving method and control unit technology, applied to instruments, static indicators, etc., can solve problems such as crosstalk images, grid pulse signal distortion, poor panel quality, etc., and achieve the effect of reducing volume and cost

Inactive Publication Date: 2018-12-18
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, for the GOA circuit installed in a large-size LCD panel model, due to the heavy resistance and capacitance load (RC Loading) of the gate line (Gate Line), the distortion (Distortion) of the gate pulse signal (Gate Pulse) is very serious. Seriously, the variance of the superposition process leads to particularly poor uniformity of the voltage Vft; since the common electrode Com is set to a fixed value, it cannot cover (Cover) every position of the panel
This leads to poor quality of the panel, such as crosstalk (Crosstalk) and screen flicker (Flicker)

Method used

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  • GOA unit and driving method thereof

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Embodiment Construction

[0023] 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.

[0024] Please refer to figure 1Shown is a schematic diagram of a structure of a preferred embodiment of the GOA unit of the present invention. The GOA circuit of the present invention includes a plurality of cascaded GOA units, wherein the nth level GOA unit controls the charging of the nth level horizo...

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Abstract

The invention discloses a GOA unit and a driving method thereof. The GOA unit comprises a pull-up control unit, a pull-up unit, a pull-down unit, a pull-down maintaining unit and a bootstrap capacitor. Electricity hedging is formed by a third thin film transistor of the pull-up unit and a hedging thin film transistor, so as to adjust the electricity hedging ratio of the third thin film transistorand the hedging thin film transistor, and an output waveform with different tangent voltages is output, so that a tangent function of the gate pulse is achieved.

Description

technical field [0001] The present invention relates to a GOA unit and its driving method, in particular to a GOA unit and its driving method for improving the corner cutting voltage. Background technique [0002] Liquid crystal display panel (Liquid Crystal Display, LCD), referred to as LCD panel, has many advantages such as thin body, power saving, no radiation, etc., and has been widely used, such as: LCD TV, smart phone, digital camera, tablet computer, computer screens, or laptop screens, etc., dominate the field of flat panel displays. [0003] 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3648G09G3/3677G09G2310/0286
Inventor 朱静
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD