公开(公告)号：US20190122630A1

公开(公告)日：2019-04-25

申请号：US16166915

申请日：2018-10-22

Applicant: Samsung Display Co., Ltd.

Inventor： Sangan KWON ,  Junpyo LEE ,  Kyunho KIM ,  Sungjin KIM ,  Yong-jin SHIN ,  Neung-beom LEE ,  Kyung-hwa LIM ,  Myungbo SIM ,  Jinhyuk JANG

IPC: G09G3/36 ,  G02F1/1335

Abstract: A display device includes: a display panel comprising a display area configured to display an image, wherein the display area includes a measurement area including a plurality of sub-measurement areas, and each of the plurality of sub-measurement areas includes a plurality of pre-map areas; a data driver configured to provide data voltages to the display panel; a signal controller; and a common voltage generator configured to provide a common voltage to the display panel, wherein an afterimage reduction mode is driven to change a level of the common voltage provided by the common voltage generator when the determined pre-map areas are adjacent to each other.

公开(公告)号：US20190244580A1

公开(公告)日：2019-08-08

申请号：US16263257

申请日：2019-01-31

Applicant: Samsung Display Co., Ltd.

Inventor： Sangan KWON ,  Junpyo LEE ,  Kyunho KIM ,  Sungjin KIM ,  Yong-Jin SHIN ,  Neung-Beom LEE ,  Kyung-Hwa LIM ,  Jinhyuk JANG

IPC: G09G3/36 ,  G02F1/1362 ,  G02F1/1368 ,  G09G3/34

CPC classification number: G09G3/3696 ,  G02F1/136213 ,  G02F1/1368 ,  G02F2201/121 ,  G02F2201/123 ,  G09G3/3406 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2320/045 ,  G09G2320/048

Abstract: A method of driving a liquid crystal display panel is provided. The liquid crystal display panel includes: a liquid crystal display pixel including a liquid crystal structure including a pixel electrode, a liquid crystal layer, and a common electrode; a switching transistor connected between the pixel electrode of the liquid crystal structure and a data-line; and a storage capacitor connected to the pixel electrode of the liquid crystal structure. The method includes: calculating an accumulated driving time of the liquid crystal display panel by accumulating a driving time of the liquid crystal display panel; determining whether or not the accumulated driving time has reached a deterioration reference time; and when the accumulated driving time is determined to have reached the deterioration reference time, changing a gate-off voltage applied to a gate terminal of the switching transistor and a common voltage applied to the common electrode.