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
CN112185314BActive Publication Date: 2022-04-01TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Publication Date
2022-04-01

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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.
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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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