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Display panel power supply circuit, power supply method and display device

A display panel and power supply circuit technology, applied to static indicators, instruments, etc., can solve the problems of large ripple on the panel, screen flickering, etc., to avoid signal fluctuations and improve the effect of screen flickering

Pending Publication Date: 2021-11-26
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the display mode is switched, crosstalk occurs between the power supply signals of the power management chip and the driver chip, resulting in large ripples in the voltage of the positive and negative power supply terminals of the panel, causing the screen to flicker

Method used

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  • Display panel power supply circuit, power supply method and display device
  • Display panel power supply circuit, power supply method and display device
  • Display panel power supply circuit, power supply method and display device

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Embodiment Construction

[0027] The application describes a number of embodiments, but the description is illustrative rather than restrictive, and it will be obvious to those of ordinary skill in the art that within the scope of the embodiments described in the application, There are many more embodiments and implementations. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Except where expressly limited, any feature or element of any embodiment may be used in combination with, or substituted for, any other feature or element of any other embodiment.

[0028] This application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The disclosed embodiments, features and elements of this application can also be combined with any conventional feature or element to form unique inventive solutions as defined by the append...

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Abstract

A display panel power supply circuit comprises a panel driving module, a power management module, a first switching device and a second switching device, the first switching device is configured to conduct a current path between a first power port of the panel driving module and a first power end of the display panel in a second display mode stage and a stage of switching from the second display mode to the first display mode; a current path between the first power supply port and the first power supply end is disconnected in the first display mode stage and the stage of switching the first display mode to the second display mode; the second switching device is configured to conduct a current path between a second power supply port and the first power supply end of the power supply management module in a first display mode stage and a stage of switching from the first display mode to the second display mode; and a current path between the second power supply port and the first power supply port is disconnected in the second display mode stage and the stage of switching the second display mode to the first display mode. According to the scheme, screen flicker during mode switching can be improved.

Description

technical field [0001] The embodiments of the present application relate to the field of display technology, and in particular to a display panel power supply circuit, a power supply method, and a display device. Background technique [0002] Low power consumption has always been an important indicator for measuring product performance in the display industry (especially mobile phones and wearable devices, etc.), so the technology of using different power supplies to power the display panel (Panel) in different display modes has been introduced. [0003] In related technologies, Driver IC (driver chip) and PMIC (power management chip) are used as dual power supplies to supply power to the display panel, and the negative power supply terminal of the display panel, the negative power supply terminal of the power management chip and the negative power supply terminal of the driver chip are connected together. The positive power terminal of the display panel, the positive power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20
CPCG09G3/20G09G2330/00
Inventor 黄星维谢广发王仓鸿
Owner BOE TECH GRP CO LTD
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