Invention Grant
- Patent Title: Liquid crystal display device and driving method therefor
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Application No.: US18141908Application Date: 2023-05-01
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Publication No.: US11967294B2Publication Date: 2024-04-23
- Inventor: Masaki Uehata , Yasuki Mori , Kohji Saitoh , Takayuki Mizunaga , Kazuya Kondoh , Takashi Nojima , Kazuhisa Yoshimoto , Kosuke Kawamoto , Hiroyuki Kito , Kazuki Nakamichi
- Applicant: Sharp Display Technology Corporation
- Applicant Address: JP Kameyama
- Assignee: Sharp Display Technology Corporation
- Current Assignee: Sharp Display Technology Corporation
- Current Assignee Address: JP Kameyama
- Agency: ScienBiziP, P.C.
- Priority: JP 22081459 2022.05.18
- Main IPC: G09G3/36
- IPC: G09G3/36

Abstract:
A common electrode driver includes an inverting amplifier including a first resistor, a second resistor, and an operational amplifier, and a resistance ratio adjustment circuit that adjusts, in accordance with a length of one horizontal scan period, a resistance ratio being a ratio of a resistance value of the second resistor to a resistance value of the first resistor. A feedback voltage is provided to one end of the first resistor. The resistance ratio adjustment circuit sets the resistance ratio when second driving is performed, in which a length of one horizontal scan period is a second time longer than a first time, to be smaller than the resistance ratio when first driving is performed, in which a length of one horizontal scan period is the first time.
Public/Granted literature
- US20240005885A1 LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD THEREFOR Public/Granted day:2024-01-04
Information query
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