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Level conversion device for display panel, control method thereof, and display panel

A display panel and conversion device technology, applied to static indicators, instruments, etc., can solve problems such as black screen at startup, black screen at startup of display panel, etc., and achieve the effect of avoiding black screen at startup

Active Publication Date: 2021-10-08
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The display panel in the related art occasionally has a black screen when starting up, but the related technology does not provide an effective means to solve the problem of the black screen when starting up

Method used

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  • Level conversion device for display panel, control method thereof, and display panel
  • Level conversion device for display panel, control method thereof, and display panel
  • Level conversion device for display panel, control method thereof, and display panel

Examples

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Embodiment Construction

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0030] Before describing the level shifting device of the display panel and its control method and the display panel according to the embodiments of the present invention with reference to the accompanying drawings, first refer to the attached figure 2 Let's introduce the level conversion device of the display panel in the related art.

[0031] In the related art, the display panel may occasionally have a black screen after booting. The inventor of the present application found through research that: before the sequence control...

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PUM

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Abstract

The present invention proposes a level shifting device for a display panel, a control method thereof, and a display panel, wherein the device includes: a plurality of level shifting modules, wherein each level shifting module includes: a level shifter, a level shifter The input end of the device is electrically connected to the corresponding signal output end in the timing control chip. When the power end of the level shifter is connected to the first power supply, the level shifter receives the signal to be converted outputted by the corresponding signal output end and is to be converted The signal is converted and amplified; and the control circuit is electrically connected to the power supply terminal of the level shifter and the first power supply respectively, and the control circuit is used to control the level shifter when the reset completion signal of the timing control chip is obtained. The power supply terminal is connected to the first power supply. In this way, before the reset of the timing control chip is completed, the phenomenon that multiple signals to be converted are pulled high at the same time due to the unstable state of the GPO port can be avoided, and the bad phenomenon of black screen at startup caused by PMIC load protection can be avoided.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a level conversion device for a display panel, a display panel, and a control method for the level conversion device for a display panel. Background technique [0002] As an output device capable of visually displaying electronic information, a display panel is widely used in various occasions such as homes and workplaces. The display panel in the related art may occasionally have a black screen when starting up, but the related art does not provide an effective means to solve the problem of the black screen when starting up. Contents of the invention [0003] The inventor of the present application has found through research that: before the timing control chip completes the program download, some GPO (General-purpose output, general-purpose output) ports are in an unknown state, that is, the GPO port may output a high level or a low power output. flat. When several...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/3696
Inventor 许炜泽赖意强吴汉
Owner BOE TECH GRP CO LTD
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