Circuit and method for common voltage feedback compensation and liquid crystal display device

  • US 11,062,665 B2
  • Filed: 09/29/2018
  • Issued: 07/13/2021
  • Est. Priority Date: 07/17/2018
  • Status: Active Grant
First Claim
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1. A circuit for common voltage feedback compensation, comprising:

  • a timing controller and a power management circuit, the timing controller and the power management circuit being electrically connected;

    the timing controller providing a feedback compensation value to the power management circuit under different images;

    the power management circuit comprising a common voltage compensation circuit and an adder, and the adder integrating the feedback compensation value and a feedback common voltage returned from a feedback point in a display panel that displays the different images through addition to provide an integration result, the common voltage compensation circuit obtaining a common voltage compensation signal based on the integration result and providing the common voltage compensation signal to the display panel,wherein the feedback compensation value is determined according to the feedback common voltage returned from the display panel.

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