公开(公告)号：US11562696B2

公开(公告)日：2023-01-24

申请号：US17021430

申请日：2020-09-15

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Hyun Lee ,  Si Duk Sung ,  Dae Sik Lee

IPC: G09G3/3275 ,  G09G3/3266 ,  G09G3/3233

Abstract: A display device includes a display unit including gate lines and pixels electrically coupled to the gate lines; a timing controller configured to generate an on-clock signal, an off-clock signal, an enable signal, and a common signal; a clock generator configured to generate a plurality of clock signals having different phases based on the on-clock signal and the off-clock signal, when the enable signal has a first voltage level, wherein the clock generator is to insert a common pulse into each of the plurality of clock signals based on the common signal, when the enable signal has a second voltage level different from the first voltage level; and a gate driver configured to generate gate signals based on the plurality of clock signals, and to sequentially provide the gate signals to the gate lines.

公开(公告)号：US11355066B2

公开(公告)日：2022-06-07

申请号：US16940788

申请日：2020-07-28

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dae Sik Lee ,  Si Duk Sung ,  Sang Hyun Lee

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275

Abstract: A power management driver and a display device having the power management driver are provided, including a first power supply configured to supply a first voltage to a first driving power terminal of a pixel through a power line during a sensing period, and supply a second voltage to the first driving power terminal of the pixel through the power line during a display period; a controller configured to control timing at which the first voltage is output and timing at which the second voltage is output during a transition period between the display period and the sensing period in response to a sensing control signal; and a fault detector configured to detect a fault in the power line based on a current flowing through an output terminal during the sensing period.

公开(公告)号：US12131686B2

公开(公告)日：2024-10-29

申请号：US16898439

申请日：2020-06-11

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Hyun Lee ,  Si Duk Sung ,  Dae-Sik Lee

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0205 ,  G09G2310/066

Abstract: The current disclosure relates to a display device including a display panel including a plurality of pixels, and a plurality of gate lines and a plurality of data lines connected to the plurality of pixels, a gate driver applying a gate signal to the plurality of gate lines, a data driver applying a data signal to the plurality of data lines, and a voltage provider configured to generate a gate-on voltage that is gradually changed in one frame and a kickback voltage that is gradually changed in one frame to transmit the gate-on voltage and the kickback voltage to the gate driver.

公开(公告)号：US11620927B2

公开(公告)日：2023-04-04

申请号：US17460779

申请日：2021-08-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Si Duk Sung ,  Dae Sik Lee ,  Sang Hyun Lee ,  Myeong Su Kim

IPC: G09G3/20

Abstract: A display device includes a scale factor provider, a grayscale converter, and pixels. The scale factor provider calculates an n-th scale factor based on n-th input grayscales received during an n-th frame period. The grayscale converter calculates (n+p)th output grayscales by applying the n-th scale factor to (n+p)th input grayscales received during an (n+p)th frame period in a first mode. The pixels output light to display an image based on the (n+p)th output grayscales, where n is an integer greater than 0 and p is an integer greater than 1.

公开(公告)号：US11043156B2

公开(公告)日：2021-06-22

申请号：US16861926

申请日：2020-04-29

Applicant: Samsung Display Co., Ltd.

Inventor： Si Duk Sung ,  Sang Hyun Lee ,  Bo Yeon Kim

IPC: G09G3/20

Abstract: A display device includes a display panel, a power supply, a signal controller configured to generate first and second clock signals having a period, a clock signal generator configured to generate a gate clock signal that is raised to a high level voltage in synchronization with the first clock signal, and that falls to a low level voltage in synchronization with the second clock signal, generate a panel separation signal by comparing a voltage of the gate clock signal with a first reference voltage during a falling period during which the gate clock signal falls, and transfer the panel separation signal to the power supply or the signal controller, and a gate driver configured to sequentially apply a gate signal by using the gate clock signal, wherein the power supply or the signal controller is configured to stop outputting depending on the panel separation signal.

公开(公告)号：US12198625B2

公开(公告)日：2025-01-14

申请号：US18137485

申请日：2023-04-21

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Hyun Lee ,  Dae Sik Lee ,  Keun Oh Kang ,  Si Duk Sung ,  Song Yi Han

IPC: G09G3/3233

Abstract: The present inventive concept provides a display device including a pixel unit which includes pixels, a sensing unit connected to the pixels through sensing lines, a first power voltage generator connected to the pixels through a first power line and generating a first power voltage for driving the pixels, a second power voltage generator connected to the pixels through the first power line and generating a second power voltage for sensing the pixels, and a timing controller selectively controlling operations of the first power voltage generator and the second power voltage generator according to a driving method of the pixel unit, and a method driving the same.

公开(公告)号：US20240071292A1

公开(公告)日：2024-02-29

申请号：US18111887

申请日：2023-02-21

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Oh KANG ,  Dae Sik Lee ,  Si Duk Sung ,  Sang Hyun Lee ,  Song Yi Han

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/08 ,  G09G2330/045

Abstract: A display device includes: a display panel; a driving voltage generator; a power voltage generator; an input voltage generator; and a timing controller. The display panel is provided with a pixel configured to emit light by using a driving voltage. The driving voltage generator is configured to supply the driving voltage to the pixel. The power voltage generator is configured to generate power voltages for driving of the display panel by using an input voltage, and generating an input voltage sensing value by sensing the input voltage. The input voltage generator is configured to supply the input voltage to the power voltage generator. The timing controller is configured to control an operation of at least one of the driving voltage generator, the power voltage generator, and the input voltage generator according to the input voltage sensing value.

公开(公告)号：US11837131B2

公开(公告)日：2023-12-05

申请号：US17081427

申请日：2020-10-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Si Duk Sung ,  Dae Sik Lee ,  Sang Hyun Lee

IPC: G09G3/3208 ,  G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/043 ,  G09G2300/0842 ,  G09G2310/06 ,  G09G2330/022

Abstract: A display device includes a display panel including a plurality of pixels, a scan driver which supplies scan signals and sensing control signals to scan lines and sensing control lines, based on a clock signal, a power manager which applies initialization power to initialization lines, a sensor which senses threshold voltages of driving transistors, a detector which detects an error of the initialization lines and outputs line information indicating an initialization line having the error, a timing controller which changes a sensed threshold voltage using the initialization line having the error and generates image data with reference to a changed threshold voltage, and a data driver which supplies a data signal corresponding to the image data to data lines.

公开(公告)号：US12080245B2

公开(公告)日：2024-09-03

申请号：US18158349

申请日：2023-01-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Hyun Lee ,  Si Duk Sung ,  Dae Sik Lee

IPC: G09G3/3266 ,  G09G3/3275 ,  G09G3/3233

CPC classification number: G09G3/3266 ,  G09G3/3275 ,  G09G3/3233 ,  G09G2310/0202 ,  G09G2310/0254 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2330/02

Abstract: A display device includes a display unit including gate lines and pixels electrically coupled to the gate lines; a timing controller configured to generate an on-clock signal, an off-clock signal, an enable signal, and a common signal; a clock generator configured to generate a plurality of clock signals having different phases based on the on-clock signal and the off-clock signal, when the enable signal has a first voltage level, wherein the clock generator is to insert a common pulse into each of the plurality of clock signals based on the common signal, when the enable signal has a second voltage level different from the first voltage level; and a gate driver configured to generate gate signals based on the plurality of clock signals, and to sequentially provide the gate signals to the gate lines.

公开(公告)号：US11862094B2

公开(公告)日：2024-01-02

申请号：US17832179

申请日：2022-06-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dae Sik Lee ,  Si Duk Sung ,  Sang Hyun Lee

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2330/12

Abstract: A power management driver and a display device having the power management driver are provided, including a first power supply configured to supply a first voltage to a first driving power terminal of a pixel through a power line during a sensing period, and supply a second voltage to the first driving power terminal of the pixel through the power line during a display period; a controller configured to control timing at which the first voltage is output and timing at which the second voltage is output during a transition period between the display period and the sensing period in response to a sensing control signal; and a fault detector configured to detect a fault in the power line based on a current flowing through an output terminal during the sensing period.