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公开(公告)号：US20150116382A1
公开(公告)日：2015-04-30
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
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.
Abstract translation: 灯单元包括DC / DC转换器。 多个单位发光二极管列接收从DC / DC转换器施加的电压。 多个晶体管分别连接到多个单位发光二极管列。 电流偏差补偿单元通过脉冲电流宽度调制平均电流控制方法来补偿分别流过多个单位发光二极管列的电流之间的偏差。 连接开关顺序地将电流偏差补偿单元与多个晶体管连接。 电阻器连接到多个晶体管的输出端子。 开关控制器基于施加到电阻器的信号来控制连接开关和电流偏差补偿单元之间的连接。
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公开(公告)号：US20210065648A1
公开(公告)日：2021-03-04
申请号：US16889666
申请日：2020-06-01
Applicant: Samsung Display Co., Ltd.
Inventor： Sungsoo CHOI , Song Yi HAN , Gwangsoo AHN
IPC: G09G3/36
Abstract: A display apparatus includes a display panel, a gate driver, a data driver, and a power voltage generator. The power voltage generator provides a power voltage to at least one of the display panel, the gate driver, and the data driver. The power voltage generator generates a gate-on voltage, a gate-off voltage, and a gate clock signal toggling between the gate-on voltage and the gate-off voltage. The power voltage generator detects a voltage level of the gate clock signal before toggling the gate clock signal and after turning on the display apparatus and changes a supply pattern of the power voltage based on the gate clock signal having a first abnormal voltage level out of a first predetermined normal range.
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公开(公告)号：US20180211602A1
公开(公告)日：2018-07-26
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: G09G3/3258 , G09G3/36
CPC classification number: G09G3/3258 , G09G3/3233 , G09G3/3607 , G09G2310/0248 , G09G2310/0264 , G09G2310/08
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.
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公开(公告)号：US20240046868A1
公开(公告)日：2024-02-08
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
CPC classification number: G09G3/3233 , G09G2310/08 , G09G2330/028 , G09G2330/04 , G09G2330/021
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.
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Patent Agency Ranking
公开(公告)号：US20180233105A1
公开(公告)日：2018-08-16
申请号：US15786118
申请日：2017-10-17
Applicant: Samsung Display Co. Ltd.
Inventor： Dong Beom CHO , Hee Bum PARK , Dae Sik LEE , Song Yi HAN
CPC classification number: G09G5/008 , G09G3/2003 , G09G3/204 , G09G3/2096 , G09G3/3266 , G09G3/3677 , G09G3/3696 , G09G5/18 , G09G2300/0426 , G09G2310/0267 , G09G2310/0272 , G09G2310/0289 , G09G2370/08
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.
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公开(公告)号：US20230169934A1
公开(公告)日：2023-06-01
申请号：US18100971
申请日：2023-01-24
Applicant: Samsung Display Co., Ltd.
Inventor： Dong Beom CHO , Hee Bum PARK , Dae Sik LEE , Song Yi HAN
CPC classification number: G09G5/008 , G09G3/204 , G09G3/2003 , G09G3/2096 , G09G3/3696 , G09G5/18 , G09G3/3266 , G09G2300/0426 , G09G2310/0267 , G09G2310/0272 , G09G2310/0289 , G09G2370/08
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.
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公开(公告)号：US20220276533A1
公开(公告)日：2022-09-01
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.
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公开(公告)号：US20210118402A1
公开(公告)日：2021-04-22
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
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.
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公开(公告)号：US20200118495A1
公开(公告)日：2020-04-16
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: G09G3/3266 , G09G3/3225 , G09G3/3275 , G09G3/36
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.
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