公开(公告)号：US20180144719A1

公开(公告)日：2018-05-24

申请号：US15820684

申请日：2017-11-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： EUNHO LEE ,  Hyundae Lee ,  Hynseuk Yoo ,  Hyungjin Kim

IPC: G09G5/10 ,  G09G5/02

CPC classification number: G09G5/10 ,  G09G3/006 ,  G09G5/02 ,  G09G5/06 ,  G09G2300/0452 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/029 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2360/16

Abstract: A display device and a method of compensating a luminance of the display device enhance display quality and reducing storage capacity of a memory, the display device including: a display panel including a plurality of pixels arranged in a matrix form; a storage unit storing a gray level compensation value of a reference pixel defined by at least one pixel; a compensation circuit receiving a gray level datum and generating a compensated gray level datum by applying the gray level compensation value; and a data driving circuit receiving the compensated gray level datum to generate a data voltage and outputting the data voltage to the display panel. The display panel includes a first compensation area and a second compensation area. The reference pixel in the first compensation area is defined by one pixel and the reference pixel in the second compensation area is defined by m×n pixels, m and n being natural numbers greater than 1.

公开(公告)号：US20220059034A1

公开(公告)日：2022-02-24

申请号：US17515742

申请日：2021-11-01

Applicant: Samsung Display Co., Ltd.

Inventor： HYOJIN LEE ,  Sehyuk PARK ,  Jinyoung ROH ,  Geunjeong PARK ,  EUNHO LEE ,  Hui NAM ,  BONGHYUN YOU

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display device including: a display panel including a pixel connected to a first scan line, second scan line, and data line, the pixel including: a first switch connected to the first scan line; a second switch connected to the second scan line; and a light emitting element; a low-frequency driving controller to output a power control signal having a first level in a first mode and a second power control signal having a second level in a second mode; a scan driver including first and second scan drivers to drive the first and second scan lines, wherein one of the first and second scan drivers operates in the second mode; and a data driver to operate in the second mode in response to the power control signal having the second level, wherein the data driver operates at a frequency lower than a reference frequency in the second mode.

公开(公告)号：US20200243008A1

公开(公告)日：2020-07-30

申请号：US16739875

申请日：2020-01-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： HYOJIN LEE ,  EUNHO LEE ,  JINYOUNG ROH ,  SEHYUK PARK ,  BONG HYUN YOU

IPC: G09G3/3233 ,  H01L29/786 ,  G09G3/3258

Abstract: A display apparatus includes a display panel displaying an image based on input image data, a driving controller determining a low frequency driving mode and a normal driving mode based on the input image data, a gate driver outputting a gate signal, a data driver outputting a data voltage, and a power voltage generator outputting power voltages. The driving controller is configured to generate a writing frame in which data is written in a pixel of the display panel and a holding frame in which the written data is maintained without writing data in the pixel in the low frequency driving mode. The driving controller is configured to operate at least one of the driving controller, the data driver, and the power voltage generator in a power reducing mode during the holding frame.