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：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：US11594196B2

公开(公告)日：2023-02-28

申请号：US17132936

申请日：2020-12-23

Applicant: Samsung Display Co., Ltd.

Inventor： Dong Beom Cho ,  Hee Bum Park ,  Dae Sik Lee ,  Song Yi Han

IPC: G09G3/3266 ,  G09G5/00 ,  G09G3/20 ,  G09G5/18 ,  G09G3/36

Abstract: A display device includes a display panel including a plurality of pixels which are connected to a plurality of gate lines and a plurality of data lines and display a plurality of consecutive frames of images, a data driver driving the data lines, a gate driver driving the gate lines, a clock generator outputting a gate clock signal, which drives the gate driver and swings between a gate-on voltage and a gate-off voltage, and a signal controller outputting a gate pulse signal which drives the clock generator and a data control signal which controls the data driver. The clock generator includes a voltage maintainer maintaining the gate clock signal at a reference voltage that has a fixed value between the gate-on voltage and the gate-off voltage for a predetermined time.

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：US12189238B2

公开(公告)日：2025-01-07

申请号：US17626259

申请日：2020-04-07

Applicant: Samsung Display Co., LTD.

Inventor： Dae Sik Lee ,  Sung Chul Hong ,  Jun Pyo Lee ,  Ji Eun Lee ,  Song Yi Han

IPC: G02F1/1335 ,  G02F1/13357

Abstract: A backlight unit includes a substrate comprising a first area having light source blocks and a second area having light source blocks, and a light source driver disposed on at least one side of the substrate and electrically connected to the light source blocks of each of the first and second areas through each of first and second sensing lines. The first sensing lines electrically connected to the light source blocks of the first area have a first resistance value, and the second sensing lines electrically connected to the light source blocks of the second area have a second resistance value.

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.