公开(公告)号：US20210166610A1

公开(公告)日：2021-06-03

申请号：US16960574

申请日：2019-09-23

Applicant: Beijing BOE Display Technology Co., Ltd. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yan YANG ,  Ching Hua HUNG ,  Rui LIU ,  Wei SUN ,  Ming CHEN ,  Qibing GU ,  Xiangyi CHEN

IPC: G09G3/20

Abstract: A source driving circuit includes a buffer amplifier configured to generate a driving signal from an original driving signal. The buffer amplifier includes a first amplifier and a second amplifier. A high-level terminal of the first amplifier is coupled to the first power signal terminal, a low-level terminal is coupled to the second power signal terminal, and an output terminal is configured to output a positive polarity driving signal. A high-level terminal of the second amplifier is coupled to the third power signal terminal, a low-level terminal is coupled to the fourth power signal terminal, and an output terminal is configured to output a negative polarity driving signal. The voltage of the second power signal terminal is less than the voltage of the third power signal terminal.

公开(公告)号：US20190181631A1

公开(公告)日：2019-06-13

申请号：US16122320

申请日：2018-09-05

Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Qibing GU ,  Bo GAO ,  Wei SUN ,  Lingyun SHI ,  Hao ZHANG ,  Guangquan WANG ,  Ming CHEN ,  Xue DONG

IPC: H02H3/20 ,  G02F1/1335 ,  H05B33/08

Abstract: A method for driving a backlight module, a driving device and a display apparatus are provided. The backlight module is divided into a plurality of light-emitting areas, each of the light-emitting areas including a plurality of lines of point sources, and the driving device includes a controller and a driving component, the driving component is connected to the controller and is configured to output a time series of voltage signal to the controller, and the controller is connected to all the plurality of lines of point sources in each of the light-emitting areas and is configured to drive the lines of point sources in the light-emitting area to emit light respectively at different periods based on the time series of voltage signal.

公开(公告)号：US20190180700A1

公开(公告)日：2019-06-13

申请号：US16048782

申请日：2018-07-30

Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Qibing GU ,  Bo GAO ,  Wei SUN ,  Lingyun SHI ,  Hao ZHANG ,  Guangquan WANG ,  Ming CHEN ,  Xue DONG

IPC: G09G3/34 ,  G09G3/36

Abstract: The present disclosure relates to a backlight driving circuit, a backlight driving method, a backlight device and a display device. A backlight driving circuit for driving a light source array, comprising: a control sub-circuit for outputting a control signal and different timing voltage signals; a driving sub-circuit for providing data signals to the light source array according to the control signal; and a selection sub-circuit that corresponds to rows in the light source array, wherein the selection sub-circuit is configured to control the turning-on of light sources of the corresponding rows in the light source array according to the timing voltage signals outputted by the control sub-circuit.