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Power management circuit

A power management and power circuit technology, applied in the direction of instruments, static indicators, etc., can solve the problem that the residual charge of the display panel cannot be completely released, and the shutdown afterimage cannot be completely eliminated, so as to prolong the shutdown afterimage elimination time and solve the shutdown afterimage. Incomplete shadow removal effect

Active Publication Date: 2015-07-15
KUSN INFOVISION OPTOELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention includes providing a power management circuit to solve the problem in the prior art that when the display panel is turned off, the residual charge in the display panel cannot be completely released, so that the afterimage after shutdown cannot be completely eliminated

Method used

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Embodiment Construction

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose, the specific implementation methods, methods, steps, structures, features and features of the power management circuit proposed according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. Efficacy, detailed as follows.

[0022] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the preferred embodiments with reference to the drawings. Through the description of specific implementation methods, the technical means and effects of the present invention to achieve the intended purpose can be understood more deeply and specifically, but the attached drawings are only for reference and description, and are not used to explain the present invention limit.

[0023] Please r...

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Abstract

The invention provides a power management circuit. The power management circuit comprises a power end, a low level output circuit, a feedback circuit, a power circuit and an output end, wherein the low level output circuit is connected to the feedback circuit through the output end; the power circuit is connected with the power end and the feedback circuit; the feedback circuit comprises a Schmitt trigger, an inverter and a first transistor; the input end of the Schmitt trigger is connected to the output end of the power management circuit; the output end of the Schmitt trigger is connected with the control end of the first transistor through the inverter; one path end of the first transistor is grounded; the other path end of the first transistor is connected to the output end of the power management circuit. The power management circuit provided by the invention can solve the problem that after shutdown, a ghosting effect of a display panel cannot be completely eliminated.

Description

technical field [0001] The invention relates to a power management circuit, in particular to a power management circuit of a display panel. Background technique [0002] The liquid crystal display mainly includes a display panel and a printed circuit board (PCBA) that provides various working signals for the display panel. The display panel includes a gate driving circuit, a source driving circuit and a pixel array. A pixel array is formed by a plurality of pixel units intersected by a plurality of scanning lines and a plurality of data lines. Generally speaking, a pixel unit mainly includes a thin film transistor, a storage capacitor and a liquid crystal capacitor. The output end of the gate driving circuit is coupled to a plurality of scan lines for turning on or off a plurality of thin film transistors connected to the corresponding scan lines. The source driving circuit is connected with a plurality of data lines, and when the plurality of thin film transistors are turn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 吴二平许晓飞
Owner KUSN INFOVISION OPTOELECTRONICS
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