Title:
AMPLIFICATION CIRCUIT USED FOR LIQUID CRYSTAL DISPLAY AND LIQUID CRYSTAL DISPLAY
Document Type and Number:
WIPO Patent Application WO/2019/136783
Kind Code:
A1
Abstract:
Disclosed is an amplification circuit used for a liquid crystal display, comprising an operational amplification module (1) and an amplitude limiting module (2) connected to the operational amplification module; the operational amplification module (1) comprises an operational amplifier (OP), a first resistor (R1), a second resistor (R2), a capacitor (C1), a sampling voltage input terminal (ACOM_FB), a first reference voltage input terminal (Vcom_1), and a compensation voltage output terminal (ACOM); the amplitude limiting module (2) is connected between the capacitor (C1) and the second resistor (R2), and the amplitude limiting module (2) comprises a first Schottky diode (V1) and a second Schottky diode (V2) connected in parallel to each other, as well as a second reference voltage input terminal (Vcom_2) connected between the first Schottky diode (V1) and the second Schottky diode (V2); and a positive electrode of the first Schottky diode (V1) and a negative electrode of the second Schottky diode (V2) is connected between the capacitor (C1) and the second resistor (R2).
Inventors:
XIAO JIANFENG (CN)
Application Number:
PCT/CN2018/074624
Publication Date:
July 18, 2019
Filing Date:
January 30, 2018
Export Citation:
Assignee:
SHENZHEN CHINA STAR OPTOELECT (CN)
International Classes:
G09G3/36
Foreign References:
| CN103117050A | 2013-05-22 | |||
| CN102842295A | 2012-12-26 | |||
| CN1195785A | 1998-10-14 | |||
| CN105118468A | 2015-12-02 | |||
| KR20070014535A | 2007-02-01 |
Attorney, Agent or Firm:
MING & YUE INTELLECTUAL PROPERTY LAW FIRM (CN)
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