公开(公告)号：US11094259B2

公开(公告)日：2021-08-17

申请号：US16388785

申请日：2019-04-18

Applicant: Samsung Display Co., Ltd.

Inventor： Hun-Bae Kim ,  Hyun-Suk Kang ,  Jihoon Kim

IPC: G09G3/3258 ,  G09G3/3291

Abstract: A display device includes a display panel includes a plurality of pixels driven by a first power voltage and a second power voltage. A display panel driving circuit is configured to receive image data from an external device, output a first voltage control signal for generating an analog supply voltage based on an on-pixel ratio (OPR) of the image data, and output a second voltage control signal for generating the first power voltage and the second power voltage. A DC-DC conversion circuit is configured to generate the analog supply voltage based on the first voltage control signal and generate the first power voltage and the second power voltage based on the second voltage control signal.

公开(公告)号：US09773456B2

公开(公告)日：2017-09-26

申请号：US14677157

申请日：2015-04-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun-Suk Kang

IPC: G09G3/32 ,  G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/0673

Abstract: A data voltage compensation circuit includes a compensation information provider, a gamma register, and a compensation data voltage provider. The compensation information provider generates a test data voltage based on a test power supply voltage and a test reference voltage, and provides compensation information corresponding to the test data voltage. The gamma register provides a gamma value corresponding to display data. The compensation data voltage provider provides a compensation data voltage based on the gamma value, the compensation information, and a reference voltage. Changes in the reference voltage change a power supply voltage of a display panel.

公开(公告)号：US09653019B2

公开(公告)日：2017-05-16

申请号：US14730902

申请日：2015-06-04

Applicant: Samsung Display Co., Ltd.

Inventor： Hyun-Suk Kang

IPC: G09G3/30 ,  G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2300/0814 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/043

Abstract: A display device is disclosed. The device includes a display panel including a plurality of pixels including a first pixel electrically connected to a first data line and a second pixel electrically connected to a second data line. The display device also includes a current path switch configured to electrically connect the first pixel to the second pixel during a voltage drop test operation and electrically disconnect the first pixel from the second pixel during an image display operation. The display device further includes a voltage drop detector electrically connected to an end of the first data line and an end of the second data line, the voltage drop detector being configured to apply a test voltage to the end of the first data line and measure a dropped test voltage at the end of the second data line. The display device additionally includes a line resistance calculator.

公开(公告)号：US20160098958A1

公开(公告)日：2016-04-07

申请号：US14730902

申请日：2015-06-04

Applicant: Samsung Display Co., Ltd.

Inventor： Hyun-Suk Kang

IPC: G09G3/32

CPC classification number: G09G3/3208 ,  G09G2300/0814 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/043

Abstract: A display device is disclosed. The device includes a display panel including a plurality of pixels including a first pixel electrically connected to a first data line and a second pixel electrically connected to a second data line. The display device also includes a current path switch configured to electrically connect the first pixel to the second pixel during a voltage drop test operation and electrically disconnect the first pixel from the second pixel during an image display operation. The display device further includes a voltage drop detector electrically connected to an end of the first data line and an end of the second data line, the voltage drop detector being configured to apply a test voltage to the end of the first data line and measure a dropped test voltage at the end of the second data line. The display device additionally includes a line resistance calculator.

Abstract translation: 公开了一种显示装置。 该装置包括显示面板，其包括多个像素，其包括电连接到第一数据线的第一像素和与第二数据线电连接的第二像素。 显示装置还包括电流路径开关，其被配置为在压降测试操作期间将第一像素电连接到第二像素，并且在图像显示操作期间电连接第一像素与第二像素。 所述显示装置还包括电连接到所述第一数据线的端部和所述第二数据线的端部的电压降检测器，所述电压降检测器被配置为将测试电压施加到所述第一数据线的末端并测量 降低第二条数据线末端的测试电压。 显示装置还包括线电阻计算器。

公开(公告)号：US09265122B2

公开(公告)日：2016-02-16

申请号：US14169950

申请日：2014-01-31

Applicant: Samsung Display Co., LTD.

Inventor： Hyun-Suk Kang

IPC: H02H3/087 ,  H05B33/08 ,  H02H3/20 ,  H02H7/12 ,  G09G3/32

CPC classification number: H05B33/0896 ,  G09G3/3233 ,  G09G2330/02 ,  G09G2330/026 ,  G09G2330/028 ,  G09G2330/04 ,  G09G2330/12 ,  H02H3/202 ,  H02H7/1213

Abstract: A direct current-to-direct current converter includes: a buck-boost unit configured to receive an input power source supplied through an input power line, where the buck-boost unit outputs a first power source obtained by boosting the input power source and a second power source obtained by dropping the input power source; and a short-circuit sensing unit connected to the input power line and a control signal line, and configured to sense a short circuit between the input power line and the control signal line, where the short-circuit sensing unit turns off the buck-boost unit when the short circuit between the input power line and the control signal line occurs.

Abstract translation: 直流电流转换器包括：降压 - 升压单元，被配置为接收通过输入电力线提供的输入电源，其中降压 - 升压单元输出通过升压输入电源获得的第一电源和 通过放弃输入电源获得的第二电源; 以及连接到输入电力线和控制信号线的短路感测单元，并且被配置为感测输入电力线和控制信号线之间的短路，其中短路感测单元关闭降压 - 升压 发生输入电源线与控制信号线之间的短路时的单位。