公开(公告)号：US11967294B2

公开(公告)日：2024-04-23

申请号：US18141908

申请日：2023-05-01

申请人： Sharp Display Technology Corporation

发明人： Masaki Uehata ,  Yasuki Mori ,  Kohji Saitoh ,  Takayuki Mizunaga ,  Kazuya Kondoh ,  Takashi Nojima ,  Kazuhisa Yoshimoto ,  Kosuke Kawamoto ,  Hiroyuki Kito ,  Kazuki Nakamichi

IPC分类号： G09G3/36

CPC分类号： G09G3/36 ,  G09G2310/0202 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0209 ,  G09G2320/0247 ,  G09G2330/021

摘要： 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.