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公开(公告)号:US20240127757A1
公开(公告)日:2024-04-18
申请号:US18397128
申请日:2023-12-27
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.
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公开(公告)号:US20210225291A1
公开(公告)日:2021-07-22
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: G09G3/3266 , G09G3/3275
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.
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公开(公告)号:US20220277680A1
公开(公告)日:2022-09-01
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.
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公开(公告)号:US20180197446A1
公开(公告)日:2018-07-12
申请号:US15791479
申请日:2017-10-24
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor: Dae Sik LEE , Jong Jae LEE , Su Jin KIM , Yang Uk NAM
CPC classification number: G09G3/006 , G09G3/3677 , G09G3/3688 , G09G3/3696 , G09G2330/021 , G09G2330/08 , G09G2330/12
Abstract: A display device includes a display unit, a driving voltage supply unit which supplies a driving voltage to the display unit, a ripple detection circuit which detects the number of times a ripple of the driving voltage is generated, and a controller which controls the driving voltage supply unit so as to change the driving voltage based on the number of times the ripple is generated.
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公开(公告)号:US20160078821A1
公开(公告)日:2016-03-17
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
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。
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公开(公告)号:US20240395217A1
公开(公告)日:2024-11-28
申请号:US18791092
申请日:2024-07-31
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor: Sang Hyun LEE , Si Duk SUNG , Dae Sik LEE
IPC: G09G3/3266 , G09G3/3233 , G09G3/3275
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.
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公开(公告)号:US20240282264A1
公开(公告)日:2024-08-22
申请号:US18496970
申请日:2023-10-30
Applicant: Samsung Display Co., Ltd.
Inventor: Ki Hyun PYUN , Dae Sik LEE , Sung Mo YANG
IPC: G09G3/3241
CPC classification number: G09G3/3241 , G09G2330/025 , G09G2330/04
Abstract: A display device according to embodiments of the present inventive concept includes pixels connected to scan lines, data lines, sensing lines, a first power line, and a second power line; and a power supply unit supplying at least one of a first driving power source, a second driving power source, and a third driving power source to the second power line as a second power source, and the power supply unit supplies voltages of the first driving power source and the third driving power source to the second power line during a normal driving period in which the pixels emit light.
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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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公开(公告)号:US20210201792A1
公开(公告)日:2021-07-01
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 , G09G3/3266 , G09G3/3275 , G09G3/3233
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.
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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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