公开(公告)号：US12094427B2

公开(公告)日：2024-09-17

申请号：US18479683

申请日：2023-10-02

Applicant: SILICON WORKS CO., LTD.

Inventor： Hyun Kyu Jeon ,  Ji Won Lee ,  Jung Eun Baek ,  Xin Cui ,  Do Hoon Lee

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/064 ,  G09G2320/0646

Abstract: An embodiment enables natural and smooth change in the brightness of a backlight unit and is able to reduce flicker by changing a dimming value between frames through a mixed function including a plurality of functions having different characteristics.

公开(公告)号：US11810523B2

公开(公告)日：2023-11-07

申请号：US17235049

申请日：2021-04-20

Applicant: SILICON WORKS CO., LTD.

Inventor： Hyun Kyu Jeon ,  Ji Won Lee ,  Jung Eun Baek ,  Xin Cui ,  Do Hoon Lee

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/064 ,  G09G2320/0646

Abstract: An embodiment enables natural and smooth change in the brightness of a backlight unit and is able to reduce flicker by changing a dimming value between frames through a mixed function including a plurality of functions having different characteristics.

公开(公告)号：US11361718B2

公开(公告)日：2022-06-14

申请号：US17122344

申请日：2020-12-15

Applicant: SILICON WORKS CO., LTD.

Inventor： Ji Won Lee ,  Jung Eun Baek ,  Xin Cui ,  Do Hoon Lee

IPC: G09G3/34 ,  G06T7/11

Abstract: An image processing device reduces power consumption of a backlight by lowering a dimming value through brightness distribution for pixels. The image data processing device includes: an image analyzing circuit configured to analyze original image data on a video image divided into a plurality of regions and calculate a representative brightness value for each region; a dimming value calculating circuit configured to calculate a dimming value for each region in order to adjust the brightness of a backlight according to the representative brightness value; a pixel analyzing circuit configured to analyze brightness distribution for a plurality of pixels in each region; a dimming control circuit configured to re-adjust the dimming value for one region according to the brightness distribution; and a dimming output circuit configured to output, to a backlight driving device, a dimming control signal for driving the backlight according to the dimming value.

公开(公告)号：US12057040B2

公开(公告)日：2024-08-06

申请号：US17478566

申请日：2021-09-17

Applicant: Silicon Works Co., Ltd.

Inventor： Min Ji Lee ,  Jun Young Park ,  Ji Won Lee ,  Suk Ju Kang ,  Yu Lim Seo ,  Jung Hyun Kim

IPC: G09G3/00 ,  G06T7/00 ,  G09G3/20

CPC classification number: G09G3/006 ,  G06T7/0002 ,  G09G3/2007 ,  G06T2207/20076 ,  G06T2207/30168 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2360/16 ,  G09G2370/10

Abstract: Disclosed are an apparatus and method for evaluating the degradation of a display panel, for evaluating a degradation state of a display panel, such as mura. The method of evaluating the degradation of a display panel may be implemented by generating mutual information by using a first histogram distribution vector of a reference frame having a target grayscale level and a second histogram distribution vector of an evaluation frame displayed on a display panel in response to the target grayscale level, generating normalized mutual information of the mutual information, providing a weight into which a cognitive characteristic of a distribution of grayscales of pixels of the evaluation frame is incorporated, and outputting an evaluation value obtained by multiplying the normalized mutual information and the weight.

公开(公告)号：US11594166B2

公开(公告)日：2023-02-28

申请号：US17132030

申请日：2020-12-23

Applicant: Silicon Works Co., Ltd.

Inventor： Jun Young Park ,  Ji Won Lee

IPC: G09G3/20

Abstract: Provided are a mura compensation circuit and a driving apparatus for a display applying the same. The mura compensation circuit includes a data remapping unit configured to remap display data of a pixel having mura so that an original gray scale range of the display data has a changed gray scale range and to provide the display data having the gray scale range in which the highest gray scale of the original gray scale range is lowered to a first gray scale of the gray scale range and the lowest gray scale of the original gray scale range is raised to a second gray scale by the remapping, and a mura compensation unit configured to perform mura compensations on the display data having the changed gray scale range and to provide the display data on which the mura compensations have been performed.

公开(公告)号：US12033595B2

公开(公告)日：2024-07-09

申请号：US17193662

申请日：2021-03-05

Applicant: SILICON WORKS CO., LTD.

Inventor： Yong Hee Kim ,  Jung Eun Baek ,  Jin Woo Park ,  Ji Won Lee ,  Do Seok Kim ,  Young Gi Kim

IPC: G09G3/36

CPC classification number: G09G3/3607 ,  G09G3/3648 ,  G09G3/3674 ,  G09G3/3685 ,  G09G2300/043 ,  G09G2300/0443 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0252

Abstract: An embodiment is able to improve the pure-color brightness ratio by compensating for image data of a current pixel on the basis of a result of comparing image data of a current pixel with image data of a previous pixel.

公开(公告)号：US11749215B2

公开(公告)日：2023-09-05

申请号：US17317385

申请日：2021-05-11

Applicant: SILICON WORKS CO., LTD.

Inventor： Do Hoon Lee ,  Jung Eun Baek ,  Chan Yung Kim ,  Hyun Kyu Jeon ,  Ji Won Lee

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2360/16

Abstract: A display driving device for improving the definition of an image according to one aspect of the present invention includes a brightness calculator for calculating first brightness data corresponding to a first resolution and second brightness data corresponding to a second resolution less than the first resolution using input image data, an offset calculator for calculating an offset on the basis of the first brightness data and the second brightness data, an input image converter for converting the input image data into input image data to which the calculated offset has been applied, a first data output unit for generating output image data for a first panel using the converted input image data and outputting the generated output image data, and a second data output unit for generating output brightness data for a second panel using the second brightness data and outputting the generated output brightness data.

公开(公告)号：US20210358426A1

公开(公告)日：2021-11-18

申请号：US17317385

申请日：2021-05-11

Applicant: SILICON WORKS CO., LTD.

Inventor： Do Hoon Lee ,  Jung Eun Baek ,  Chan Yung Kim ,  Hyun Kyu Jeon ,  Ji Won Lee

IPC: G09G3/34

Abstract: A display driving device for improving the definition of an image according to one aspect of the present invention includes a brightness calculator for calculating first brightness data corresponding to a first resolution and second brightness data corresponding to a second resolution less than the first resolution using input image data, an offset calculator for calculating an offset on the basis of the first brightness data and the second brightness data, an input image converter for converting the input image data into input image data to which the calculated offset has been applied, a first data output unit for generating output image data for a first panel using the converted input image data and outputting the generated output image data, and a second data output unit for generating output brightness data for a second panel using the second brightness data and outputting the generated output brightness data.

公开(公告)号：US20210201745A1

公开(公告)日：2021-07-01

申请号：US17132030

申请日：2020-12-23

Applicant: Silicon Works Co., Ltd.

Inventor： Jun Young Park ,  Ji Won Lee

IPC: G09G3/20

Abstract: Provided are a mura compensation circuit and a driving apparatus for a display applying the same. The mura compensation circuit includes a data remapping unit configured to remap display data of a pixel having mura so that an original gray scale range of the display data has a changed gray scale range and to provide the display data having the gray scale range in which the highest gray scale of the original gray scale range is lowered to a first gray scale of the gray scale range and the lowest gray scale of the original gray scale range is raised to a second gray scale by the remapping, and a mura compensation unit configured to perform mura compensations on the display data having the changed gray scale range and to provide the display data on which the mura compensations have been performed.