Voltage conversion circuit and display equipment

A voltage conversion circuit and display device technology, applied in static indicators, instruments, etc., can solve the problem of shutdown afterimage, residual charge cannot be released, etc., and achieve the effect of eliminating shutdown afterimage.

Active Publication Date: 2021-01-05
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 equipment
  • Voltage conversion circuit and display equipment
  • Voltage conversion circuit and display equipment

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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 display equipment. The voltage conversion circuit comprises a phase inverting unit and a conversion unit; the phase inverting unit is used foroutputting a low-potential phase inverting signal according to a first reference signal pulled up to the high potential, a time sequence signal and a low-potential second reference signal when the display equipment is shut down; and the conversion unit is used for outputting a high-potential third reference signal to a GOA unit according to the low-potential inverting signal, the first reference signal pulled up to the high potential, the time sequence signal and the low-potential second reference signal, so that the GOA unit controls a pixel driving unit to be conducted and releases residualcharges on a pixel electrode. Shutdown afterimage are eliminated.

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 Applications(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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