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：US20190079325A1

公开(公告)日：2019-03-14

申请号：US15962304

申请日：2018-04-25

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dong Beom Cho ,  Dong Won Park ,  Song Yi Han

IPC: G02F1/1343 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1362

Abstract: A display device includes a substrate; and a red pixel electrode, a green pixel electrode, and a blue pixel electrode disposed on the substrate. Each of the red pixel electrode, the green pixel electrode, and the blue pixel electrode includes a transverse stem portion, a longitudinal stem portion, and a fine branch portion. An angle between the transverse stem portion and the fine branch portion of the red pixel electrode, an angle between the transverse stem portion and the fine branch portion of the green pixel electrode, and an angle between the transverse stem portion and the fine branch portion of the blue pixel electrode are different from each other.

公开(公告)号：US10825398B2

公开(公告)日：2020-11-03

申请号：US16571487

申请日：2019-09-16

Applicant: Samsung Display Co., Ltd.

Inventor： Keunoh Kang ,  Dae-Sik Lee ,  Kihyun Pyun ,  Song Yi Han

IPC: G06F3/046 ,  G09G3/3266 ,  G09G3/3225 ,  G09G3/36 ,  G09G3/3275

Abstract: A display device includes a display panel including scan lines, data lines, and a plurality of pixels coupled to the scan lines and the data lines, a voltage generator configured to generate an on-voltage and an off-voltage, a scan controller configured to generate a scan start signal based on the on-voltage, the off-voltage, and a vertical start signal, and a scan driver configured to generate a scan signal based on the scan start signal and to provide the scan signal to a scan line of the scan lines. The scan controller is configured to detect a voltage level of the scan start signal and to output a shutdown signal based on the voltage level of the scan start signal during an over current detecting period.

公开(公告)号：US09370066B2

公开(公告)日：2016-06-14

申请号：US14255108

申请日：2014-04-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Song Yi Han ,  Tae Gon Im

IPC: H05B37/00 ,  H05B33/08

CPC classification number: H05B33/0827 ,  H05B33/0812 ,  Y02B20/345

Abstract: A light emitting device includes a light emitting unit and a constant current controller. The light emitting unit includes at least one LED string. The constant current controller is connected to a cathode terminal of the LED string and controls a driving current flowing through the LED string. The constant current controller includes a transistor connected to the cathode terminal of the LED string. A switching unit and a sensing resistor are connected to the transistor. The switching unit connects and disconnects between the sensing resistor and the transistor.

Abstract translation: 发光器件包括发光单元和恒流控制器。 发光单元包括至少一个LED串。 恒流控制器连接到LED串的阴极端子，并控制流过LED串的驱动电流。 恒流控制器包括连接到LED串的阴极端子的晶体管。 开关单元和感测电阻器连接到晶体管。 开关单元连接和断开感测电阻和晶体管之间的连接。

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：US11314131B2

公开(公告)日：2022-04-26

申请号：US15962304

申请日：2018-04-25

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dong Beom Cho ,  Dong Won Park ,  Song Yi Han

IPC: G02F1/1343 ,  G02F1/1337 ,  G02F1/1362 ,  G02F1/1335

Abstract: A display device includes a substrate; and a red pixel electrode, a green pixel electrode, and a blue pixel electrode disposed on the substrate. Each of the red pixel electrode, the green pixel electrode, and the blue pixel electrode includes a transverse stem portion, a longitudinal stem portion, and a fine branch portion. An angle between the transverse stem portion and the fine branch portion of the red pixel electrode, an angle between the transverse stem portion and the fine branch portion of the green pixel electrode, and an angle between the transverse stem portion and the fine branch portion of the blue pixel electrode are different from each other.

公开(公告)号：US10650747B2

公开(公告)日：2020-05-12

申请号：US15827461

申请日：2017-11-30

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/30 ,  G09G3/3258 ,  G09G3/3233 ,  G09G3/36

Abstract: A display device includes: a timing controller to provide data including a pre-emphasis value and an image data value; a gamma reference voltage supplier to selectively supply one of a first gamma reference voltage and a second gamma reference voltage different from the first gamma reference voltage; and a data driver to supply a pre-emphasis voltage, that is generated based on the pre-emphasis value and the first gamma reference voltage, to data lines during a first period of a horizontal period, and to supply a data voltage, that is generated based on the image data value and the second gamma reference voltage, to the data lines during a second period of the horizontal period. The timing controller is to control the gamma reference voltage supplier to supply the first gamma reference voltage during the first period and to supply the second gamma reference voltage during the second period.

公开(公告)号：US09830869B2

公开(公告)日：2017-11-28

申请号：US14524535

申请日：2014-10-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Tae Gon Im ,  Song Yi Han ,  Young Sup Kwon ,  Eun Chul Shin

IPC: G09G3/36 ,  G09G3/34 ,  H05B33/08

CPC classification number: G09G3/3607 ,  G09G3/3406 ,  G09G2300/0809 ,  G09G2310/027 ,  G09G2320/0626 ,  H05B33/086

Abstract: A light unit includes a DC/DC converter. A plurality of unit light emitting diode columns receive a voltage applied from the DC/DC converter. A plurality of transistors, respectively, are connected to the plurality of unit light emitting diode columns. A current deviation compensating unit compensates for deviations between currents respectively flowing through the plurality of unit light emitting diode columns by a pulse current width modulation average current control method. A connection switch sequentially connects the current deviation compensating unit with the plurality of transistors. A resistor is connected to output terminals of the plurality of transistors. A switch controller controls connection between the connection switch and the current deviation compensating unit based on a signal applied to the resistor.