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：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.

公开(公告)号：US11270641B1

公开(公告)日：2022-03-08

申请号：US17236481

申请日：2021-04-21

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G3/3233

Abstract: A display device includes a first power source, a timing controller, and pixels. The timing controller is connected to the first power source through a main line, an auxiliary line, and a detection line. The pixels are commonly connected to the first power source through a first power line. The first power source includes: a main power source connected to the first power line and the main line; an auxiliary power source connected to the auxiliary line; a rectifier connected between the auxiliary power source and the first power line; and a comparator comparing a voltage of the first power line and providing its output to the detection line.

公开(公告)号：US09934753B2

公开(公告)日：2018-04-03

申请号：US15132519

申请日：2016-04-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yang Uk Nam ,  Jong Jae Lee ,  Su Jin Kim ,  Dae Sik Lee

IPC: G09G5/00 ,  G09G3/36 ,  G01K1/20 ,  G01K7/22 ,  G01K13/00 ,  G06F1/26 ,  G06F1/32

CPC classification number: G09G3/3696 ,  G01K1/20 ,  G01K7/22 ,  G01K13/00 ,  G06F1/263 ,  G06F1/3206 ,  G09G3/3677 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/041 ,  G09G2330/021 ,  G09G2330/045

Abstract: A display device includes a scan driver which supplies a gate-on voltage or a gate-off voltage to scan lines, and a power supply unit which supplies the gate-off voltage to the scan driver, and includes a temperature sensor which generates a sensing voltage of which voltage value is changed corresponding to a temperature of a panel or an ambient temperature, a first voltage limiter which limits a minimum voltage value of the sensing voltage, and a second voltage limiter which limits a maximum voltage value of the sensing voltage.

公开(公告)号：US09514689B2

公开(公告)日：2016-12-06

申请号：US14643465

申请日：2015-03-10

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Hwan Lee ,  Seung Young Choi ,  Byung Kyou Min ,  Dae Sik Lee

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G3/3426 ,  G09G2320/0247 ,  G09G2320/062 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2360/16

Abstract: A display device includes at least one light source array configured to provide a display panel with light, a dimming signal generating unit configured to receive an image data signal and generate a dimming signal, a first comparator configured to receive the dimming signal output from the dimming signal generating unit and a preset critical value and generate a comparison signal, a dimming modulating unit configured to receive the comparison signal output from the first comparator and the dimming signal output from the dimming signal generating unit and modulate the dimming signal, a constant current controller configured to receive the dimming signal output from the dimming modulating unit and a voltage from a sensor node, and to control a light driving current driving the light source array, and a resistor controller configured to change resistors connected to the sensor node by the comparison signal output from the first comparator.

Abstract translation: 显示装置包括被配置为向显示面板提供光的至少一个光源阵列，调光信号产生单元，被配置为接收图像数据信号并产生调光信号;第一比较器，被配置为接收从调光输出的调光信号 信号生成单元和预设临界值，并生成比较信号;调光调制单元，被配置为接收从第一比较器输出的比较信号和从调光信号生成单元输出的调光信号，并调制调光信号;恒流控制器 被配置为接收从调光单元输出的调光信号和来自传感器节点的电压，并且控制驱动光源阵列的光驱动电流;以及电阻控制器，被配置为通过比较信号来改变连接到传感器节点的电阻器 从第一比较器输出。

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.