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.

公开(公告)号：US10861360B2

公开(公告)日：2020-12-08

申请号：US16058225

申请日：2018-08-08

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Kyoungho Lim ,  Seokha Hong

IPC: G06F3/038 ,  G09G3/00 ,  G09G3/36

Abstract: A display device includes a pixel column including first to n-th pixels connected to a same data line and different gate lines from each other, a data driving chip which outputs a test data voltage in a test mode and outputs image data voltages in a normal mode, a sensing circuit which is electrically connected to the data line and the data driving chip in the test mode, senses a current output to the first pixel during a first period, and senses a current output to an i-th pixel during a second period, and a signal controller which compares a reference charge amount calculated based on the current sensed during the first period to a first charge amount calculated based on the current sensed during the second period and compensates for a level of an image data voltage applied to the i-th pixel among the image data voltages based on the compared result.

公开(公告)号：US10811638B2

公开(公告)日：2020-10-20

申请号：US15076576

申请日：2016-03-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Haegoo Jung ,  Jangseok Ma ,  Dohyung Ryu ,  Jaewoo Song ,  Jaehoon Lee

IPC: H01L51/52 ,  G02B5/30 ,  H01L27/12 ,  G02B1/14 ,  H01L27/32

Abstract: A display device includes a display panel having a display surface, and a polarizing unit on the display surface of the display panel, the polarizing unit including a linear polarizer that includes at least two portions having different transmittances from each other.

公开(公告)号：US10789687B2

公开(公告)日：2020-09-29

申请号：US16190463

申请日：2018-11-14

Applicant: Samsung Display Co., Ltd.

Inventor： Nam-Gon Choi ,  Namjae Lim ,  Moonshik Kang ,  Jinpil Kim ,  JaeSung Bae ,  Jaehoon Lee

IPC: G06T5/00 ,  G06T3/40

Abstract: In an image processing method that converts image data into output data by performing tone mapping, an edge of an image represented by the image data is determined, a first tone mapping operation is performed on first image data included in the image data, where the first image data represent a first portion of the image not including the edge, whether a gray level of second image data is within a predetermined gray range is determined, where the second image data represent a second portion of the image including the edge, a second tone mapping operation is performed on the second image data when the gray level of the second image data is within the gray range, and the first tone mapping operation is performed on the second image data when the gray level of the second image data is not within the gray range.