公开(公告)号：US20240087541A1

公开(公告)日：2024-03-14

申请号：US18233910

申请日：2023-08-15

Applicant: Sharp Display Technology Corporation

Inventor： Takashi NOJIMA

IPC: G09G3/36

CPC classification number: G09G3/3648 ,  G09G2310/08

Abstract: A liquid crystal display device includes a liquid crystal display panel including a plurality of gate bus lines, and a control device. The control device includes a first gate driver connected to one end of each of the plurality of gate bus lines and a second gate driver connected to another end of each of the plurality of gate bus lines. The control device receives an image signal, generates a gate signal based on the image signal, and inputs the gate signal to only the first gate driver or to the first gate driver and the second gate driver, in accordance with a refresh rate of the image signal.

公开(公告)号：US20240005885A1

公开(公告)日：2024-01-04

申请号：US18141908

申请日：2023-05-01

Applicant: Sharp Display Technology Corporation

Inventor： Masaki UEHATA ,  Yasuki MORI ,  Kohji SAITOH ,  Takayuki MIZUNAGA ,  Kazuya KONDOH ,  Takashi NOJIMA ,  Kazuhisa YOSHIMOTO ,  Kosuke KAWAMOTO ,  Hiroyuki KITO ,  Kazuki NAKAMICHI

IPC: G09G3/36

CPC classification number: G09G3/36 ,  G09G2310/0202 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2320/0209 ,  G09G2320/0247

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.