公开(公告)号：US12165611B2

公开(公告)日：2024-12-10

申请号：US17333678

申请日：2021-05-28

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Byung Ki Chun ,  Hyeonmin Kim ,  Youngwook Yoo ,  Jungyu Lee ,  Hyunjun Lim

IPC: G09G5/10 ,  G09G3/32

Abstract: The present disclosure provides a display device with a display panel and driver. The driver includes a logo compensator to generate a logo map data with respect to a logo area through which the logo image is displayed and compensates for a brightness of the logo area using the logo map data. The logo compensator includes an extractor, a logo calculator, a logo determination unit, and a brightness compensation block. The extractor extracts logo area data. The logo calculator calculates the logo map data with first data corresponding to a first image recognized as the logo image and second data corresponding to a second image recognized as a logo background image. The logo determination unit sets a boundary area and determining whether a first area corresponding to the first image overlaps the boundary area to output determination data. The brightness compensation block compensates for the brightness of the logo area.

公开(公告)号：US11682335B2

公开(公告)日：2023-06-20

申请号：US16941451

申请日：2020-07-28

Applicant: Samsung Display Co., Ltd.

Inventor： Kuk-Hwan Ahn ,  Youngwook Yoo ,  Jungyu Lee ,  Hyunjun Lim ,  Byung Ki Chun

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/3275 ,  G09G3/3266

CPC classification number: G09G3/2044 ,  G09G3/3233 ,  G09G3/3275 ,  G09G3/3266 ,  G09G2320/02

Abstract: A display device includes a display panel, a memory, a dithering processor, and a panel driver. The display panel includes a display surface, and the memory stores dither patterns with respect to at least one spot area included in the display surface. The dithering processor selects a dither pattern among the dither patterns in a predetermined time unit and outputs a compensation image signal corresponding to the dither pattern. The panel driver outputs a data signal corresponding to the spot area based on the compensation image signal. Each of the dither patterns includes a first grayscale area having a first grayscale value higher than a first target grayscale value of the spot area and a second grayscale area having a second grayscale value lower than the first target grayscale value.

公开(公告)号：US11386643B2

公开(公告)日：2022-07-12

申请号：US16891981

申请日：2020-06-03

Applicant: Samsung Display Co., Ltd.

Inventor： Byung Ki Chun ,  Kuk-Hwan Ahn ,  Young Wook Yoo ,  Jungyu Lee ,  Hyunjun Lim

IPC: G06V10/75 ,  G06F16/535 ,  G06K9/62 ,  G06V20/62 ,  G09G5/36 ,  G09G5/22 ,  G09G3/20

Abstract: A driving controller includes a logo detector. The logo detector includes a histogram extractor which receives input image data and extracts a first histogram from logo area data of the input image data, a first histogram regenerator electrically connected to the histogram extractor and configured to receive the first histogram from the histogram extractor to generate a second histogram based on the first histogram and a logo map determiner electrically connected to the histogram extractor and the first histogram regenerator, and configure to select one of the first histogram and the second histogram to generate a first logo map. The driving controller is configured to compensate the logo area data of the input image data using the first logo map.

公开(公告)号：US11127335B2

公开(公告)日：2021-09-21

申请号：US16893326

申请日：2020-06-04

Applicant: Samsung Display Co., Ltd.

Inventor： Kuk-Hwan Ahn ,  HongSoo Kim ,  Junheyung Jung ,  Youngwook Yoo ,  Jungyu Lee ,  Hyunjun Lim ,  Byung Ki Chun

IPC: G09G3/20 ,  G09G5/18 ,  G06T1/20

Abstract: A driving controller of a display device includes a driving frequency controller for receiving an image signal, determining a driving frequency based on the image signal, and outputting a masking enable signal corresponding to the driving frequency, and an image processor for converting the image signal into a data signal and outputting the data signal, wherein the image processor sequentially converts, based on the masking enable signal being at an active level, a part of bits of the image signal into the data signal corresponding to a plurality of dither patterns.