公开(公告)号：US11605353B2

公开(公告)日：2023-03-14

申请号：US17401196

申请日：2021-08-12

Applicant: LG Display Co., Ltd.

Inventor： WooKyu Sang ,  HyoungSik Kim ,  Dongkyu Lee

IPC: G09G3/3275 ,  G09G3/3266 ,  G09G3/3233

Abstract: The present disclosure relates to a display driver and a display device using the same. The display device according to the embodiment improves an effect of preventing leakage current of a data supply transistor by adaptively controlling and supplying, on the basis of a luminance value of an input data, a parking voltage which is applied in order to prevent the leakage current of the data supply transistor. The display driver comprises a controller which provides a clock signal swinging between a high level and a low level during a refresh frame in which a data voltage is written in a pixel, and provides a clock signal having a direct current voltage during a hold frame in which the data voltage written in the pixel is maintained; a data driver which supplies the data voltage to the pixel during the refresh frame in accordance with a data control signal of the controller; and a power supplier which supplies a parking voltage to the pixel during the hold frame.

公开(公告)号：US20220059036A1

公开(公告)日：2022-02-24

申请号：US17401196

申请日：2021-08-12

Applicant: LG Display Co., Ltd.

Inventor： WooKyu Sang ,  HyoungSik Kim ,  Dongkyu Lee

IPC: G09G3/3275 ,  G09G3/3266 ,  G09G3/3233

Abstract: The present disclosure relates to a display driver and a display device using the same. The display device according to the embodiment improves an effect of preventing leakage current of a data supply transistor by adaptively controlling and supplying, on the basis of a luminance value of an input data, a parking voltage which is applied in order to prevent the leakage current of the data supply transistor. The display driver comprises a controller which provides a clock signal swinging between a high level and a low level during a refresh frame in which a data voltage is written in a pixel, and provides a clock signal having a direct current voltage during a hold frame in which the data voltage written in the pixel is maintained; a data driver which supplies the data voltage to the pixel during the refresh frame in accordance with a data control signal of the controller; and a power supplier which supplies a parking voltage to the pixel during the hold frame.