公开(公告)号：US20230395011A1

公开(公告)日：2023-12-07

申请号：US18237252

申请日：2023-08-23

申请人： LX Semicon Co., Ltd.

发明人： Jun Young PARK ,  Min Ji LEE ,  Gang Won LEE ,  Young Kyun KIM ,  Ju Hyoung LIM ,  Ji Won LEE

IPC分类号： G09G3/20

CPC分类号： G09G3/2007 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2360/145 ,  G09G2360/16

摘要： A voltage drop compensation system and a display driving device for compensating for a voltage drop of a display panel. The voltage drop compensation system generates a voltage drop compensation value for each of a plurality of regions into which a test image of a panel is divided, and the display driving device compensates for a voltage drop for each region of image data using the voltage drop compensation value.

公开(公告)号：US20220415240A1

公开(公告)日：2022-12-29

申请号：US17851472

申请日：2022-06-28

申请人： LX Semicon Co., Ltd.

发明人： Jun Young PARK ,  Min Ji LEE ,  Gang Won LEE ,  Young Kyun KIM ,  Ju Hyoung LIM ,  Ji Won LEE

IPC分类号： G09G3/20

摘要： A voltage drop compensation system and a display driving device for compensating for a voltage drop of a display panel. The voltage drop compensation system generates a voltage drop compensation value for each of a plurality of regions into which a test image of a panel is divided, and the display driving device compensates for a voltage drop for each region of image data using the voltage drop compensation 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.

公开(公告)号：US20220180788A1

公开(公告)日：2022-06-09

申请号：US17643010

申请日：2021-12-07

申请人： LX Semicon Co., Ltd.

发明人： Do Yeon KIM ,  Jun Young PARK ,  Min Ji LEE ,  Gang Won LEE ,  Young Kyun KIM ,  Ji Won LEE

IPC分类号： G09G3/20

摘要： A Mura compensation data generation apparatus for compensating for Mura, and a Mura compensation apparatus of a display using Mura compensation data. The Mura compensation data generation apparatus includes an image representative value generation circuit configured to generate a representative value representing an entire gray of an image; a difference value extraction circuit configured to extract difference values between the representative value and gray values for a plurality of preset positions on the image; a distribution range determination circuit configured to determine a distribution range of the difference values by checking a maximum value and a minimum value of the difference values; and a Mura compensation data generation circuit configured to generate Mura compensation data having a preset number of bits corresponding to the difference values.