公开(公告)号：US20170301279A1

公开(公告)日：2017-10-19

申请号：US15335210

申请日：2016-10-26

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Bonghyun You ,  Soo-yeon Lee ,  Seokha Hong

IPC: G09G3/20

CPC classification number: G09G3/3266 ,  G09G3/3677 ,  G09G2310/0286 ,  G11C19/28

Abstract: A gate driving circuit includes: a plurality of stages, a k-th stage from among the plurality of stages, the k-th stage including: an input circuit to receive a previous carry signal and to pre-charge a first node; a first output circuit to output a k-th gate signal; a second output circuit to output a k-th carry signal; a discharge hold circuit to transmit a clock signal to a second node, and to discharge the second node with a second low voltage; a first pull down circuit to discharge the k-th gate signal with a first low voltage, and to discharge the first node and the k-th carry signal with the second low voltage; and a discharge circuit for discharging the k-th carry signal with the second low voltage in response to the previous carry signal.

公开(公告)号：US20170116949A1

公开(公告)日：2017-04-27

申请号：US15215516

申请日：2016-07-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jaehoon Lee ,  Bonghyun You

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/3677 ,  G09G2310/0202 ,  G09G2310/0286 ,  G09G2310/0289 ,  G09G2310/08

Abstract: A gate driving circuit includes driving stages for providing gate signals to gate lines of a display panel. A k-th driving stage a k-th driving stage (k being equal to or greater than 2) among the driving stages includes a gate output unit configured to output a clock signal as a k-th gate signal in response to a voltage of a first node, a carry output unit configured to output the clock signal as a k-th carry signal in response to the voltage of the first node, a control unit configured to control a voltage level of the first node in response to a (k−1)th carry signal, a first discharge unit configured to discharge the k-th carry signal to a voltage level in response to the (k−1)th carry signal, and a second discharge unit configured to discharge the k-th carry signal to a voltage level in response to a discharge signal.

公开(公告)号：US20250104633A1

公开(公告)日：2025-03-27

申请号：US18891176

申请日：2024-09-20

Applicant: Samsung Display Co., Ltd.

Inventor： Sanghyun Kang ,  Ohchul Kwon ,  Byungkwan Song ,  Joosun Yoon ,  Sangmyoung Lee ,  Jaehoon Lee ,  Joon Huh

IPC: G09G3/3233

Abstract: A pixel includes a light-emitting element, a first transistor connected between a first voltage line and the light-emitting element, a second transistor connected between the first voltage line and the first transistor, a third transistor connected between the first transistor and the light-emitting element, and a fourth transistor connected between the light-emitting element and a second voltage line, wherein the pixel is configured to emit light in a plurality of emission periods between a plurality of non-emission periods during one frame, and the second transistor is turned off and the third transistor is turned on in even-numbered non-emission periods among the plurality of non-emission periods.

公开(公告)号：US12243484B2

公开(公告)日：2025-03-04

申请号：US18612223

申请日：2024-03-21

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Byunghyuk Shin ,  Joosun Yoon

IPC: G09G3/3233

Abstract: A display apparatus includes pixels, each of the pixels including a light-emitting diode, a first transistor connected to a driving voltage line and the light-emitting diode, a second transistor connected to the first transistor and the light-emitting diode, a third transistor connected to the second transistor and a first initialization voltage line, and a fourth transistor connected to the light-emitting diode and a second initialization voltage line. During a frame, each of the pixels operates in a first scan period and a second scan period. The first scan period includes a write-period in which a data signal is supplied and a first emission period in which the pixel is configured to emit light at a brightness corresponding to the data signal.

公开(公告)号：US12087237B2

公开(公告)日：2024-09-10

申请号：US18132904

申请日：2023-04-10

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Kyoungho Lim

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2310/0272 ,  G09G2320/046

Abstract: A display device including a display panel to display an image, a panel driver to drive the display panel, and a controller to control a driving of the panel driver. The controller includes a first circuit to receive frame data during an active period in synchronization with a vertical synchronization signal determining a start time point of a frame having the active period and a variable blank period, to shift a position of the frame data in response to a shift start signal to generate shift data, and to provide the shift data to the panel driver. A number of active periods of the vertical synchronization signal included in one period of the shift start signal differs from the number of active periods of the vertical synchronization signal included in another period of the shift start signal.

公开(公告)号：US11893947B2

公开(公告)日：2024-02-06

申请号：US18119299

申请日：2023-03-09

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Deokho Kang ,  Jong Wook Kim ,  Youngwoon Choi

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2320/0233 ,  G09G2330/021

Abstract: A display device includes a display panel including a plurality of pixels, an image data corrector configured to generate a corrected image data by adjusting an image data and a data driver providing data signals to the plurality of pixels based on the corrected image data. The image data corrector divides the display panel into a plurality of unit areas, and adjust the image data for a unit area among the plurality of unit areas by using a full image load for the entire display panel, a first image load for the unit area, and a second image load for peripheral unit areas surrounding the unit area among the plurality of unit areas.

公开(公告)号：US11887528B2

公开(公告)日：2024-01-30

申请号：US18079895

申请日：2022-12-13

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Jung-Taek Kim

IPC: G09G3/00 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0842 ,  G09G2330/02 ,  G09G2330/10 ,  G09G2330/12 ,  G09G2360/16

Abstract: A display device may include a display panel including a plurality of pixel rows, a power supply providing a power voltage to the display panel, and an overcurrent protector shutting down the power supply when at least one of the pixel rows is burnt. The overcurrent protector may include a sensing controller sensing a first current of at least one first pixel row of the display panel in a first frame period, and sensing a second current of the first pixel row in a second frame period after the first frame period when the first current is greater than or equal to a first threshold value. The overcurrent protector may further include a burnt determiner determining whether the first pixel row is burnt, and providing a shutdown signal to the power supply when the first pixel row is burnt.

公开(公告)号：US11657765B2

公开(公告)日：2023-05-23

申请号：US17377239

申请日：2021-07-15

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Kyoungho Lim

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2310/0272 ,  G09G2320/046

Abstract: A display device includes a display panel to display an image, a panel driver to drive the display panel, and a controller to control a driving of the panel driver. The controller includes a first circuit to receive frame data during an active period in synchronization with a vertical synchronization signal determining a start time point of a frame having the active period and a variable blank period, to shift a position of the frame data in response to a shift start signal to generate shift data, and to provide the shift data to the panel driver. A number of active periods of the vertical synchronization signal included in one period of the shift start signal differs from the number of active periods of the vertical synchronization signal included in another period of the shift start signal.

公开(公告)号：US11488532B2

公开(公告)日：2022-11-01

申请号：US17366889

申请日：2021-07-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Byoungkwan An

IPC: G09G3/3233 ,  G09G3/20 ,  G09G3/3291

Abstract: A display device includes a display panel including a plurality of pixels, a sensing circuit to measure a sensing current value of each of the pixels during a frame period, wherein the frame period includes an active period and a blank period following the active period, and a driving controller to calculate a deterioration weight based on the sensing current value and a reference current value, and to generate output image data by applying the deterioration weight to input image data.

公开(公告)号：US10909941B2

公开(公告)日：2021-02-02

申请号：US16235048

申请日：2018-12-28

Applicant: Samsung Display Co., LTD.

Inventor： Taehyeong An ,  KyoungHo Lim ,  Soo-Yeon Lee ,  Jaehoon Lee ,  Nam-Gon Choi

IPC: G09G3/36

Abstract: A liquid crystal display device and a driving method of the liquid crystal display device includes a display panel including a plurality of gate lines, a plurality of data lines crossing the gate lines, and a plurality of pixels coupled to the gate lines and the data lines, a gate driver configured to provide a gate signal to the pixels through the gate lines, a data driver configured to provide a data signal to the pixels through the data lines and a timing controller configured to receive an image data provided from an external device and generate control signals that control the gate driver and the data driver. The timing controller analyzes a pattern of the image data by every frame, and changes an inversion driving method and gamma voltages of the image data based on a pattern analyzing result from the analysis of the pattern of the image data.