公开(公告)号：US11984086B2

公开(公告)日：2024-05-14

申请号：US18124609

申请日：2023-03-22

Applicant: Samsung Display Co., Ltd.

Inventor： Tae Hyeong An ,  Jae Hoon Lee ,  Byung Ki Chun

IPC: G09G3/3291 ,  G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/32 ,  G09G2320/0257 ,  G09G2320/041

Abstract: Provided is a display device comprising at least one sensing pixel including a sensing pixel circuit, a sensing unit including sensing circuit, and a temperature output unit to calculate a temperature of the display panel based on the sensing data. The sensing data is generated from a sensing pixel including a driving transistor in which a current generated according to temperature varies, and a temperature is measured from the sensing data.

公开(公告)号：US11823615B2

公开(公告)日：2023-11-21

申请号：US17590535

申请日：2022-02-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Hoon Lee

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0267 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0214

Abstract: A scan driver includes a plurality of stages. A n-th stage among the plurality of stages includes a first input unit controlling a voltage of a first node in response to a previous carry signal, a scan output unit outputting a current scan signal corresponding to a scan clock signal in response to the voltage of the first node, a first switching unit controlling a voltage of a second node in response to the previous carry signal, a sensing output unit outputting a current sensing signal corresponding to a sensing clock signal in response to the voltage of the second node, a carry output unit outputting a current carry signal corresponding to a carry clock signal in response to the voltage of the second node, and a second switching unit controlling the voltage of the second node in response to the sensing clock signal or the carry clock signal.

公开(公告)号：US11682362B2

公开(公告)日：2023-06-20

申请号：US17402439

申请日：2021-08-13

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon Lee ,  Seung Ho Park ,  Hee Sook Park ,  Kyoung Ho Lim

IPC: G09G5/10 ,  G09G3/36

CPC classification number: G09G3/3662 ,  G09G2320/0257 ,  G09G2320/045

Abstract: An afterimage compensator and a display device having the same are disclosed, and the afterimage compensator includes an image analyzer configured to determine an amount of image variation based on a change of image data, and an image shifter configured to adjust a shift interval, which is an interval between time points at which an image is shifted, according to the amount of image variation.

公开(公告)号：US11450260B2

公开(公告)日：2022-09-20

申请号：US17479306

申请日：2021-09-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hee Sook Park ,  Kyoung Ho Lim ,  Seung Ho Park ,  Jae Hoon Lee

IPC: G09G3/20 ,  G09G3/32

Abstract: A display device includes a set period setting unit for setting, as a set time, a time for which a set period elapses from a time at which a first area included in an input image is detected as a still area, and a gain generator for gradually decreasing an initial level of a gain value down to a saturation level having a lowest value of the gain value from the set time. The set period setting unit differently sets the saturation level of the gain value and a final level of the gain value, corresponding to grayscale values of the first area and a load value of the input image. The load value is an average value of grayscale values of an entirety of an area of the input image.

公开(公告)号：US11355042B2

公开(公告)日：2022-06-07

申请号：US17171505

申请日：2021-02-09

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon Lee ,  Jong Wook Kim ,  Kyoung Ho Lim

IPC: G09G3/32 ,  G09G3/00 ,  G09G3/20 ,  G09G3/3208

Abstract: A display device and a method of driving the same are provided. The method of driving the display includes a display area to display an image. The method includes performing a first pixel shift driving by shifting an image by a first range in the display area without loss of image information due to enlargement or reduction of the image, checking whether a change of a block grayscale value is greater than or equal to a threshold in an interest area in the display area, and performing second pixel shift driving by shifting an image having the loss of image information.

公开(公告)号：US20210210000A1

公开(公告)日：2021-07-08

申请号：US17017259

申请日：2020-09-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Hoon Lee ,  Sang Myeon Han ,  Jong Wook Kim ,  Byoung Kwan An

IPC: G09G3/32

Abstract: There are provided a display device, driving method and sensing unit thereof, where a display device includes a display unit having pixels connected to signal lines; a sensing unit including at least one current sensor connected to at least one of the signal lines; and a compensator connected between the sensing unit and the display unit, wherein the compensator is configured to: calculate degradation weights for positions of the pixels, based on a sensing current measured by the sensing unit and a predetermined reference current value, update degradation accumulated values for the positions whenever the sensing current is measured, by accumulating degradation degrees in which the degradation weights are reflected, generate compensated grayscale values by compensating input grayscale values based on the updated degradation accumulated values, and output the compensated grayscale values to the pixels.

公开(公告)号：US11056053B2

公开(公告)日：2021-07-06

申请号：US16412663

申请日：2019-05-15

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon Lee ,  Dong Hak Pyo ,  Seung Ho Park ,  Kyoung Ho Lim ,  Sang Myeon Han

IPC: G09G3/3225 ,  G09G3/36

Abstract: A display device and a method of driving the same. The display device includes a display panel including a plurality of pixels, a degradation compensator configured to output compensation data based on age values of the plurality of pixels and an input grayscale value of input image data, a scan driver configured to supply a scan signal to the display panel, and a data driver configured to supply a data signal corresponding to the compensation data to the display panel. The degradation compensator includes a first compensation unit configured to generate a first compensation grayscale value with reference to the input grayscale value and a first age value, and a second compensation unit configured to generate a second compensation grayscale value with reference to the first compensation grayscale value and the first age value.

公开(公告)号：US10950181B2

公开(公告)日：2021-03-16

申请号：US16453192

申请日：2019-06-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Myeon Han ,  Seung Ho Park ,  Jae Hoon Lee

IPC: G09G3/20 ,  G09G3/3275

Abstract: Systems and methods are described for displaying an image during an initial driving period. An exemplary display device includes a timing controller configured to reconstruct compensation reference data from a first memory into a plurality of transmission data, sequentially transmit the plurality of transmission data to a second memory, and display an image on the display panel when partial transmission data of the plurality of transmission data are transmitted and stored to the second memory during the initial driving period.

公开(公告)号：US10803807B2

公开(公告)日：2020-10-13

申请号：US16402125

申请日：2019-05-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon Lee ,  Seokha Hong

IPC: G09G3/30 ,  G09G3/3258 ,  G09G3/3233 ,  H01L27/32 ,  H01L51/52

Abstract: A display device includes a display panel having a plurality of first and second scan lines, a plurality of data lines, a plurality of sensing lines, and a plurality of pixels, a data driver to apply a reference data voltage to the data lines and change the voltage level of the reference data voltage based on a compensating data, a scan driver to apply a first scan voltage to the first scan lines and a second scan voltage to the second scan lines, a timing controller to generate control signals that control the data driver and the scan driver, and a charging ratio compensator to sense a target voltage charged in a first pixel of the plurality of pixels to which the reference data voltage is provided during a predetermined target time, sense a charging voltage charged in the first pixel to which the reference data voltage is provided during a charging time, and output the compensating data that changes a voltage level of the reference data voltage applied to the pixel during the charging time until the difference between the target voltage and the charging voltage is substantially equal to or less than a predetermined reference value.

公开(公告)号：US10424264B2

公开(公告)日：2019-09-24

申请号：US15826020

申请日：2017-11-29

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yeon-Sun Na ,  Bo-Ram Kang ,  Jeong Hun Go ,  Jae Hoon Lee

IPC: G06F1/32 ,  G09G3/36 ,  H01L35/30 ,  G09G3/20 ,  G06F1/3234

Abstract: A display device and method of operation that provides self-generated power. The device includes: a display portion including a plurality of pixels; a data driver applying a data signal to data lines connected to the plurality of pixels; a signal controller transmitting an image data signal for generation of the data signal to the data driver; a power supply generating a driving voltage for operation of the signal controller and the data driver; a thermoelectric generation portion generating electrical energy by using heat generated by at least one of the signal controller, the power supply, and the data driver; and a converter generating an auxiliary driving voltage that is the same as the driving voltage by using the electrical energy.