Title:
CIRCUIT, SWITCHING POWER SUPPLY CIRCUIT, AND LIQUID CRYSTAL DISPLAY DRIVE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/054044
Kind Code:
A1
Abstract:
An absorption circuit, comprising: a switching power supply voltage spike suppression circuit (302), used for changing a switching power supply voltage spike into an expected voltage spike; an energy storage circuit (304), connected to the switching power supply voltage spike suppression circuit, and used for storing a suppressed spike voltage; and a release circuit (306), connected to the energy storage circuit, and used for releasing energy, which is stored by the energy storage circuit and higher than an output voltage (Vout) of the switching power supply, to an output end of the switching power supply when the voltage stored by the energy storage circuit is higher than the output voltage. A switching power supply circuit (802) comprises the absorption circuit. A liquid crystal display drive circuit (800) comprises the switching power supply circuit.
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Inventors:
PENG XIAOFEI (CN)
HUANG JIACHENG (CN)
MA SHENGFEI (CN)
HUANG JIACHENG (CN)
MA SHENGFEI (CN)
Application Number:
PCT/CN2017/080581
Publication Date:
March 29, 2018
Filing Date:
April 14, 2017
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
HEFEI BOE OPTOELECTRONICS TECH (CN)
HEFEI BOE OPTOELECTRONICS TECH (CN)
International Classes:
G09G3/36; H02M1/34; H02M1/44
Foreign References:
| CN106230246A | 2016-12-14 | |||
| CN203562942U | 2014-04-23 | |||
| CN103378739A | 2013-10-30 | |||
| US20060262577A1 | 2006-11-23 |
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
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