公开(公告)号：US20220122295A1

公开(公告)日：2022-04-21

申请号：US17506361

申请日：2021-10-20

申请人： LX Semicon Co., Ltd.

发明人： Jun Young PARK ,  Min Ji LEE ,  Ji Won LEE ,  Suk Ju KANG ,  Joo Sung CHOI

IPC分类号： G06T9/00 ,  G06T11/60 ,  G06T7/00

摘要： The present disclosure discloses an apparatus and method for compressing coefficient values of a compensation equation for compensating for a defect in an image and a circuit for compensating for display data using compression values compressed by the apparatus and method. The apparatus for compressing coefficient values of a compensation equation includes a coefficient value provision unit configured to provide coefficient values of a coefficient of a compensation equation for compensating for a defect in an image and location information for each pixel and a coefficient value compression unit configured to provide a first compression bitmap and a second compression bitmap by sequentially performing first compression and second compression on the coefficient value.

公开(公告)号：US20240071278A1

公开(公告)日：2024-02-29

申请号：US18383581

申请日：2023-10-25

申请人： LX SEMICON CO., LTD.

发明人： Jun Young PARK ,  Min Ji LEE ,  Gang Won LEE ,  Young Kyun KIM ,  Ji Won LEE ,  Jung Hyun KIM ,  Suk Ju KANG ,  Sung In CHO

IPC分类号： G09G3/20

CPC分类号： G09G3/2007 ,  G09G2320/0233 ,  G09G2360/16

摘要： A display apparatus having a mura compensation function includes a mura memory in which compensation data corresponding to coefficient values of a mura compensation equation is stored; and a mura compensation circuit configured to perform mura compensations on display data by using the mura compensation equation to which the compensation data has been applied, wherein the coefficient values are set so that the mura compensation equation has been fit to have a curve that satisfies known difference values of selected gray levels, a first estimation difference value of a first estimation gray level higher than the selected gray levels, and a second estimation difference value of a second estimation gray level lower than the selected gray levels, and wherein the compensation data comprises the coefficient values of the mura compensation equation in which all of the known difference values of the selected gray levels, the first estimation difference value, and the second estimation difference value have a difference within a preset error range.

公开(公告)号：US20230118591A1

公开(公告)日：2023-04-20

申请号：US17964678

申请日：2022-10-12

申请人： LX Semicon Co., Ltd.

发明人： Jun Young PARK ,  Min Ji LEE ,  Gang Won LEE ,  Young Kyun KIM ,  Ji Won LEE ,  Jung Hyun KIM ,  Suk Ju KANG ,  Sung In CHO

IPC分类号： G09G3/20

摘要： The present disclosure discloses a display driving apparatus having a mura compensation function and a method of compensating for mura of the same. To this end, the display driving apparatus may include a mura memory in which compensation data corresponding to coefficient values of a mura compensation equation is stored, and a mura compensation circuit configured to perform mura compensations on display data by using the mura compensation equation to which the compensation data has been applied.

公开(公告)号：US20230073179A1

公开(公告)日：2023-03-09

申请号：US17903955

申请日：2022-09-06

申请人： LX Semicon Co., Ltd.

发明人： Jun Young PARK ,  Min Ji LEE ,  Gang Won LEE ,  Young Kyun KIM ,  Ji Won LEE ,  Suk Ju KANG ,  Joo Sung CHOI

IPC分类号： G09G5/00

摘要： The present disclosure discloses an apparatus and method for providing compensation information, which compress the compensation information for demura and a display driving apparatus for solving a defect in a screen by using compressed compensation information. The apparatus for providing compensation information includes a compensation value provision unit configured to provide compensation values of pixels and a compression unit configured to perform compression on the compensation values for each block of a screen.