公开(公告)号：US20230419873A1

公开(公告)日：2023-12-28

申请号：US18199372

申请日：2023-05-19

Applicant: Samsung Display Co., Ltd.

Inventor： Byung Ki CHUN ,  Jae Hoon LEE ,  Tae Hyeong AN

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2007 ,  G09G3/3233 ,  G09G3/2096 ,  G09G2300/0842 ,  G09G2300/0413 ,  G09G2330/12 ,  G09G2330/08 ,  G09G2320/048 ,  G09G2320/0276

Abstract: Provided is a display device comprising pixel circuits included in the display area, the pixel circuits including light emitting elements with grayscales corresponding to data input from the outside, a dummy pixel circuit included in the non-display area, the dummy pixel circuit including a dummy light emitting element and a dummy driving transistor, a sensing unit for inputting to the dummy pixel circuit, a test data signal for sensing an output signal corresponding to predetermined test data for each predetermined time, and then performing an operation of generating compensation information for compensating for degradation according to a driving time of at least one of the light emitting element and the driving transistor based on the output signal output from the dummy pixel circuit, and a timing controller for accumulating and storing the compensation information, and generating compensated data by compensating for the data input from the outside.

公开(公告)号：US20230410755A1

公开(公告)日：2023-12-21

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：US20230317019A1

公开(公告)日：2023-10-05

申请号：US18327827

申请日：2023-06-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Hoon LEE ,  Hyun Bo BYUN ,  Kyoung Ho LIM

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2310/027

Abstract: A display device includes a display panel including a first data line, a second data line, and a pixel, the pixel including a first sub-pixel coupled to the first data line, and a second sub-pixel coupled to the second data line, a light stress compensator configured to generate a first data voltage control signal for the first sub-pixel based on a second data value of input image data for the second sub-pixel, in response to a first data value of input image data for the first sub-pixel being equal to or less than a first reference value, and a data driver configured to generate a first data signal based on the first data value for the first sub-pixel, to provide a first data voltage to the first data line, and to vary the first data voltage based on the first data voltage control signal.

公开(公告)号：US20220301473A1

公开(公告)日：2022-09-22

申请号：US17833767

申请日：2022-06-06

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Hoon LEE ,  Jong Wook KIM ,  Kyoung Ho LIM

IPC: 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 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：US20220208149A1

公开(公告)日：2022-06-30

申请号：US17499051

申请日：2021-10-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Hoon LEE ,  Kyoung Ho Lim

IPC: G09G5/38 ,  G09G5/373

Abstract: A display device includes a shift controller which generates an output image by shifting an input image within a shift range; and pixels which displays the output image. The shift controller sets the shift range to a first range when the input image is a moving image, and sets the shift range to a second range smaller than the first range when the input image is a still image.

公开(公告)号：US20200020277A1

公开(公告)日：2020-01-16

申请号：US16402125

申请日：2019-05-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon LEE ,  Seokha HONG

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

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：US20180130435A1

公开(公告)日：2018-05-10

申请号：US15801951

申请日：2017-11-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon LEE ,  Soo-Yeon LEE ,  Seok Ha HONG ,  Bong Hyun YOU ,  Jai-Hyun KOH

IPC: G09G3/36

Abstract: A stage of a gate driving circuit includes: a first control transistor diode-connected between a first input end of the stage and a first node, biased by a first input signal, and back-biased by a second input signal; a second control transistor including a control end which receives a third input signal, a first end connected to the first node, and a second end connected to a first voltage, and back-biased by a fourth input signal; a first output transistor including a control end connected to the first node, a first end connected to a clock input end of the stage, and a second end connected to a first output end of the stage; and a capacitor connected between the control and second ends of the first output transistor. The second input signal and the fourth input signal have enable levels during different periods.