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Voltage conversion circuit and display device

A technology of voltage conversion circuit and display equipment, which is applied to static indicators, instruments, etc., can solve the problems of power-off afterimage and residual charge that cannot be released, and achieve the effect of eliminating power-off afterimage

Active Publication Date: 2022-04-01
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a voltage conversion circuit and a display panel to solve the problem of afterimage after shutdown caused by residual charges that cannot be released in the prior art

Method used

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  • Voltage conversion circuit and display device
  • Voltage conversion circuit and display device
  • Voltage conversion circuit and display device

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Embodiment Construction

[0033] Specific structural and functional details disclosed herein are representative only and are for purposes of describing example embodiments of the present application. This application may, however, be embodied in many alternative forms and should not be construed as limited to only the embodiments set forth herein.

[0034] In the description of this application, it should be understood that the terms "central", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device Or elements must have a certain orientation, be constructed and operate in a certain orientation, and thus should not be construed as limiting the application. In addition...

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PUM

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Abstract

The invention discloses a voltage conversion circuit and a display device. The voltage converting circuit includes an inverting unit and a converting unit; the inverting unit is used to output a low voltage according to the first reference signal pulled up to a high potential, the timing signal and the second reference signal of a low potential when the display device is turned off. an inversion signal of a potential; the conversion unit is configured to, according to the inversion signal of a low potential, the first reference signal pulled up to a high potential, the timing signal, and the second reference signal of a low potential, to The GOA unit outputs a high-potential third reference signal, so that the GOA unit controls the pixel drive unit to be turned on, and releases the residual charge on the pixel electrode, thereby eliminating after-image after power-off.

Description

technical field [0001] The invention relates to the technical field of display panels, in particular to a voltage conversion circuit and a display device. Background technique [0002] At present, due to the difference in the design structure of the LCD panel, a new negative voltage VSSQ signal is added to the GOA (Gate Driver On Array, gate drive circuit) signal to improve the leakage of the pixel drive transistor and improve the reliability of the GOA circuit. [0003] However, the original IC does not support discharge output of multiple VSS signals (multiple VSS signals include VSSG signal and VSSQ signal). The GOA circuit cannot drive the pixel drive transistor to turn on, and the residual charge on the pixel electrode cannot be released, which leads to afterimage after shutdown. Contents of the invention [0004] Embodiments of the present invention provide a voltage conversion circuit and a display panel, so as to solve the problem of afterimage after power-off cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/36G09G3/3674G09G2320/0257
Inventor 刘汉先钟云肖
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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