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1. (WO2018010221) VOLTAGE CONVERSION CIRCUIT AND LIQUID CRYSTAL DISPLAY CHIP

Pub. No.:    WO/2018/010221    International Application No.:    PCT/CN2016/092324
Publication Date: Fri Jan 19 00:59:59 CET 2018 International Filing Date: Sat Jul 30 01:59:59 CEST 2016
IPC: H02M 3/07
G09G 3/36
Applicants: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD
武汉华星光电技术有限公司
Inventors: JI, Feilin
纪飞林
TAN, Xiaoping
谭小平
Title: VOLTAGE CONVERSION CIRCUIT AND LIQUID CRYSTAL DISPLAY CHIP
Abstract:
Provided is a voltage conversion circuit, comprising a voltage conversion module (110) and a control module (130); the voltage conversion module (110) comprises an input terminal (111), a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a fourth capacitor (C4), a first switch to a thirteenth switch (S1 to S13), and an output terminal (113), the input terminal (111) being used for connecting to an input power source (Vin), the control module (130) being connected to the voltage conversion module (110) and being used for controlling the connection or disconnection of the first switch to the thirteenth switch (S1 to S13), and the voltage conversion module (110), under the action of the charge or release of the first capacitor (C1), the second capacitor (C2), the first capacitor (C3), and the fourth capacitor (C4), being used for converting the voltage of the input power source (Vin) into an output voltage of a different magnification and outputting same from the output terminal (113). Also provided is a liquid crystal display drive chip using said voltage conversion circuit. The present voltage conversion circuit can output voltages of multiple magnifications, improving voltage conversion efficiency.