公开(公告)号：US10354568B2

公开(公告)日：2019-07-16

申请号：US15411784

申请日：2017-01-20

Applicant: Samsung Display Co., Ltd.

Inventor： Il-Hun Jeong ,  Woo-Seok Jang

IPC: G09G3/00 ,  G09G3/3233 ,  G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a power supply transmitting driving power to the pixels via a power line and stopping transmission of the driving power in response to a crack signal, a panel driver provides a driving signal to the pixels, the driving signal for displaying a black image during a non-emission period of each frame period and displaying a valid image during an emission period of each frame period, and a crack detector senses a current flowing through the power line and conditionally generate the crack signal according to values of the current sensed over M successive frame periods, where M is an integer greater than 1.

公开(公告)号：US10096300B2

公开(公告)日：2018-10-09

申请号：US15408975

申请日：2017-01-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Man-Bok Cheon ,  So-Young Kim ,  Jin-Ho Lee ,  Woo-Seok Jang

IPC: G09G5/10 ,  G09G3/20

Abstract: A luminance compensator in a display device includes a temperature sensor that detects a temperature of a display panel, a temperature estimator that calculates an estimated temperature of each of a plurality of pixel blocks based on an average luminance of each pixel block and the temperature of the display panel, a first weight calculator that detects a displacement of the display panel and calculates a first temperature compensation weight for first compensation pixel blocks of the pixel blocks, the first compensation pixel blocks being adjacent to an upper side of an image pattern area displayed on a portion of the display panel, and a temperature compensator that calculates temperature compensation data by applying the first temperature compensation weight to the estimated temperature to compensate the average luminance, and outputs the temperature compensation data.

公开(公告)号：US09633628B2

公开(公告)日：2017-04-25

申请号：US14510337

申请日：2014-10-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung-Taek Kim ,  Kyoung-Ho Lim ,  Jae-Hoon Lee ,  Woo-Seok Jang

IPC: G09G5/36 ,  G09G5/18 ,  G09G5/393

CPC classification number: G09G5/18 ,  G09G5/393 ,  G09G2370/08

Abstract: A method of driving a display device includes a writing operation and a reading operation. The writing operation includes writing first to Mth frame data in a first frame memory during first to Mth frame periods. The reading operation includes reading (L−M)th and (L−M+1)th frame data among the first to Mth frame data from the first frame memory during an Lth frame period. M may be three or more, and L may be an integer ranging from (M+1) to (2M−1). The frame data read from the first frame memory corresponds to an image to be displayed. Reading and writing operations are further performed for remaining ones of the frame memories.

公开(公告)号：US10127857B2

公开(公告)日：2018-11-13

申请号：US15401697

申请日：2017-01-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jin-Ho Lee ,  So-Young Kim ,  Woo-Seok Jang ,  Man-Bok Cheon ,  Seung-Ho Park

IPC: G09G3/3208 ,  G09G3/20 ,  G01K13/00

Abstract: A temperature estimating apparatus includes an average data outputting circuit configured to output average data of image data displayed on a display panel. The temperature estimating apparatus further includes a change amount outputting circuit configured to determine a change amount of the average data, and to output an average data change amount. The temperature estimating apparatus additionally includes a luminance outputting circuit configured to convert the average data change amount to a luminance, and to output the luminance. The temperature estimating apparatus further includes a temperature sensor configured to sense an ambient temperature of the display panel, and to output the ambient temperature. The temperature estimating apparatus additionally includes a current temperature outputting circuit configured to determine a current temperature of the display panel based on a previous temperature of the display panel, the luminance and the ambient temperature.

公开(公告)号：US20170236490A1

公开(公告)日：2017-08-17

申请号：US15408975

申请日：2017-01-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Man-Bok Cheon ,  So-Young Kim ,  Jin-Ho Lee ,  Woo-Seok Jang

IPC: G09G5/10

CPC classification number: G09G5/10 ,  G09G3/20 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/041

Abstract: A luminance compensator in a display device includes a temperature sensor that detects a temperature of a display panel, a temperature estimator that calculates an estimated temperature of each of a plurality of pixel blocks based on an average luminance of each pixel block and the temperature of the display panel, a first weight calculator that detects a displacement of the display panel and calculates a first temperature compensation weight for first compensation pixel blocks of the pixel blocks, the first compensation pixel blocks being adjacent to an upper side of an image pattern area displayed on a portion of the display panel, and a temperature compensator that calculates temperature compensation data by applying the first temperature compensation weight to the estimated temperature to compensate the average luminance, and outputs the temperature compensation data.

公开(公告)号：US20170206834A1

公开(公告)日：2017-07-20

申请号：US15401697

申请日：2017-01-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jin-Ho Lee ,  So-Young Kim ,  Woo-Seok Jang ,  Man-Bok Cheon ,  Seung-Ho Park

IPC: G09G3/3208 ,  G01K13/00 ,  G09G3/20

CPC classification number: G09G3/3208 ,  G01K7/427 ,  G01K13/00 ,  G09G3/2018 ,  G09G3/3258 ,  G09G2320/0257 ,  G09G2320/041 ,  G09G2360/145 ,  G09G2360/16 ,  G09G2370/08

Abstract: A temperature estimating apparatus includes an average data outputting circuit configured to output average data of image data displayed on a display panel. The temperature estimating apparatus further includes a change amount outputting circuit configured to determine a change amount of the average data, and to output an average data change amount. The temperature estimating apparatus additionally includes a luminance outputting circuit configured to convert the average data change amount to a luminance, and to output the luminance. The temperature estimating apparatus further includes a temperature sensor configured to sense an ambient temperature of the display panel, and to output the ambient temperature. The temperature estimating apparatus additionally includes a current temperature outputting circuit configured to determine a current temperature of the display panel based on a previous temperature of the display panel, the luminance and the ambient temperature.