公开(公告)号：US09972281B2

公开(公告)日：2018-05-15

申请号：US14321623

申请日：2014-07-01

Applicant: Samsung Display Co., Ltd.

Inventor： Dong-Won Park ,  Yong-Jun Jang ,  Gi-Geun Kim ,  Won-Sik Oh ,  Eun-Ho Lee ,  Hyun-Dae Lee

IPC: G09G3/36 ,  G09G5/18 ,  G09G3/3225

CPC classification number: G09G5/18 ,  G09G3/3225 ,  G09G3/3648 ,  G09G2320/046 ,  G09G2360/16

Abstract: A method of compensating an image to be display on a display panel is disclosed. In one aspect, the method includes receiving a first input image and adjusting a contrast sensitivity of the first input image. The method also includes calculating a first derivative of luminance of a pixel included in the adjusted image, calculating a second derivative of the luminance of the pixel, and accumulating the first and second derivatives. The method further includes determining a burn-in causing boundary based at least in part on the accumulated first and second derivatives, receiving a second input image, and comparing the burn-in causing boundary to a boundary of the second input image to determine whether to apply burn-in compensation. The method finally includes compensating a portion of the second input image corresponding to the burn-in causing boundary based at least in part on an unsharpening filter.

公开(公告)号：US10127869B2

公开(公告)日：2018-11-13

申请号：US15041851

申请日：2016-02-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dong-Hwa Shin ,  Jung-Won Kim ,  Gi-Geun Kim ,  Jae-Sung Bae ,  Nam-Gon Choi ,  Bong-Gyun Kang

IPC: G09G3/36 ,  G09G3/34

Abstract: A timing controller for a display apparatus includes a polarity comparison part and a compensation part. The polarity comparison part compares a first polarity of a first data voltage with a second polarity of a second data voltage, the first data voltage corresponding to a first pixel in a first frame and generated based on a first gamma voltage, the second data voltage corresponding to the first pixel in a second frame and generated based on a second gamma voltage. The compensation part compensates the second data voltage based on a first look-up table, if the first polarity is the same as the second polarity, and compensates the second data voltage based on a second look-up table, if the first polarity is different from the second polarity.

公开(公告)号：US09607562B2

公开(公告)日：2017-03-28

申请号：US14594942

申请日：2015-01-12

Applicant: Samsung Display Co., LTD.

Inventor： Gi-Geun Kim ,  Jung-Won Kim ,  Ja-Kyoung Jin ,  Nam-Gon Choi

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G2320/0252 ,  G09G2330/021 ,  G09G2340/0435

Abstract: A method of driving a display panel is proposed. The method includes determining whether an input image data represents a video image or a static image, determining whether an image transition occurs in the input image data when the input image data represents the static image, and inserting a plurality of image sticking compensation frames between normal frames in a low frequency driving when the image transition occurs in the input image data between the normal frames. The number of the image sticking compensation frame may be properly adjusted during a cycle of low frequency driving.