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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：US20170170726A1
公开(公告)日：2017-06-15
申请号：US15183934
申请日：2016-06-16
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Seok Hwan LEE , Jong Jae LEE , Yang Uk NAM , Se Young HEO , Jun Ki HONG
CPC classification number: H02M3/156 , G09G3/2092 , G09G2310/0267 , G09G2310/0275 , G09G2310/08 , G09G2330/028 , H02M1/08 , H02M2001/0006 , H02M2001/0025
Abstract: A power supply includes a voltage converter circuit which converts an input voltage into an output voltage and outputs the output voltage, a voltage controller which controls the voltage converter circuit in response to a first feedback voltage or a second feedback voltage, a feedback terminal which supplies the first feedback voltage, an internal voltage divider circuit which supplies the second feedback voltage, and a switch unit which transfers the first feedback voltage or the second feedback voltage to the voltage controller.
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3.发明申请公开(公告)号：US20170032758A1
公开(公告)日：2017-02-02
申请号：US15158542
申请日：2016-05-18
Applicant: Samsung Display Co., Ltd.
Inventor： Min Ho PARK , Kyun Ho KIM , Sung In KANG , Yang Uk NAM , Yoon Sik PARK
CPC classification number: G09G3/3688 , G09G3/2003 , G09G3/3696 , G09G2300/0426 , G09G2310/0291 , G09G2310/08 , G09G2320/0276 , G09G2320/0673
Abstract: A gamma reference voltage generator includes first and second resistors between a base voltage source and an input node, a third resistor coupled to a first node between the first resistor and the second resistor, a first transistor coupled to the input node and coupled to a first output node, a fourth resistor coupled between the first transistor and the input node, an operational amplifier coupled to the first node and coupled to a second terminal of the third resistor, a second transistor coupled to the first transistor, coupled to the second terminal of the third resistor and a second output node, and coupled to an output terminal of the operational amplifier, a fifth resistor and a first capacitor coupled in parallel between the second output node and the base voltage source, and a plurality of resistors coupled between the first output node and the second output node.
Abstract translation: 伽马参考电压发生器包括在基极电压源和输入节点之间的第一和第二电阻器，耦合到第一电阻器和第二电阻器之间的第一节点的第三电阻器，耦合到输入节点并耦合到第一电阻器 输出节点，耦合在第一晶体管和输入节点之间的第四电阻器，耦合到第一节点并耦合到第三电阻器的第二端子的运算放大器，耦合到第一晶体管的第二晶体管，耦合到第一晶体管的第二端子 第三电阻器和第二输出节点，并且耦合到运算放大器的输出端子，并联在第二输出节点和基极电压源之间的第五电阻器和第一电容器，以及耦合在第一和第二电阻器之间的多个电阻器 输出节点和第二输出节点。
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公开(公告)号：US20230006553A1
公开(公告)日：2023-01-05
申请号：US17930527
申请日：2022-09-08
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Yang Uk NAM
Abstract: A DC-DC converter may include: a first converter for converting an input voltage to generate a first power supply voltage; a duty ratio controller configured generate a duty ratio control signal for controlling a duty ratio of a switching pulse of the first converter; a switching frequency controller configured to generate a switching frequency control signal for controlling a driving frequency of the first converter corresponding to a switching frequency of the switching pulse; and a current sensor configured to sense current flowing through the first converter. The first converter is driven at a switching frequency of a first frequency in a first mode, based on the switching frequency control signal, and generates the first power supply voltage of a first level, based on the duty ratio control signal. The switching frequency controller determines whether to turn off the current sensor.
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公开(公告)号：US20170098424A1
公开(公告)日：2017-04-06
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
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.
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Patent Agency Ranking
公开(公告)号：US20150115826A1
公开(公告)日：2015-04-30
申请号：US14329635
申请日：2014-07-11
Applicant: Samsung Display Co., Ltd.
Inventor： Bon-Sung KOO , Jong Jae LEE , Eui-Dong HWANG , Jun Dal KIM , Yang Uk NAM
CPC classification number: G09G3/3266 , G09G2320/041
Abstract: Provided is a display device, including: a plurality of pixels; a scan driver connected to a plurality of scanning lines connected to the plurality of pixels; and a gate signal generator configured to determine a level of a gate-on voltage according to ambient temperature and to supply the gate-on voltage to the scan driver, wherein the gate signal generator is further configured to apply a hysteresis characteristic to a thermistor voltage to vary according to the ambient temperature.
Abstract translation: 提供了一种显示装置，包括：多个像素; 连接到连接到所述多个像素的多条扫描线的扫描驱动器; 以及栅极信号发生器，被配置为根据环境温度确定栅极导通电压的电平并且向所述扫描驱动器提供所述栅极导通电压，其中所述栅极信号发生器还被配置为向热敏电阻电压施加滞后特性 根据环境温度而变化。
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公开(公告)号：US20240322665A1
公开(公告)日：2024-09-26
申请号：US18734366
申请日：2024-06-05
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Yang Uk NAM , Sung Chun PARK
IPC: H02M1/00 , G06F1/3206 , G06F1/3234 , G06F1/3296 , H02M3/158
CPC classification number: H02M1/0032 , G06F1/3206 , G06F1/3265 , G06F1/3296 , H02M3/1582
Abstract: A DC-DC converter includes a first converter outputting a first power voltage in a first driving method of generating an inductor current by alternately turning on transistors in a normal mode and outputting the first power voltage in a second driving method of generating the inductor current with the number of turn-on times less than that of the first driving method in a power saving mode, a second converter outputting a second power voltage in a third driving method of generating the inductor current with the number of turn-on times less than that of the second driving method in the power saving mode and determining differently magnitudes of the second power voltage in the power saving mode and the second power voltage in the normal mode, and a mode selector supplying a mode control signal to the converters to drive the converters according to one of the modes.
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公开(公告)号：US20240203346A1
公开(公告)日：2024-06-20
申请号：US18372333
申请日：2023-09-25
Applicant: Samsung Display Co., LTD.
Inventor： Yang Uk NAM
IPC: G09G3/3233
CPC classification number: G09G3/3233 , G09G2300/0819 , G09G2300/0842 , G09G2310/08 , G09G2320/0247 , G09G2330/021 , G09G2330/028
Abstract: A display device includes: pixels, each of which is connected to a first power line and a second power line; and a power supply which, in a first display mode, supplies a first power voltage to the first power line and supplies a second power voltage to the second power line. The power supply includes: a first power supply which generates the first power voltage; a second power supply which generates the second power voltage; and a shut-down determiner which shuts down the first power supply and the second power supply in a case where the first power voltage is greater than a first reference voltage at a first time point, and the second power voltage is greater than a second reference voltage at a second time point.
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公开(公告)号：US20220149730A1
公开(公告)日：2022-05-12
申请号：US17332073
申请日：2021-05-27
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Yang Uk NAM
Abstract: A DC-DC converter may include: a first converter for converting an input voltage to generate a first power supply voltage; a duty ratio controller configured generate a duty ratio control signal for controlling a duty ratio of a switching pulse of the first converter; a switching frequency controller configured to generate a switching frequency control signal for controlling a driving frequency of the first converter corresponding to a switching frequency of the switching pulse; and a current sensor configured to sense current flowing through the first converter. The first converter is driven at a switching frequency of a first frequency in a first mode, based on the switching frequency control signal, and generates the first power supply voltage of a first level, based on the duty ratio control signal. The switching frequency controller determines whether to turn off the current sensor.
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公开(公告)号：US20210280121A1
公开(公告)日：2021-09-09
申请号：US17016998
申请日：2020-09-10
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Yang Uk NAM , Sung Chun PARK
Abstract: A display device includes a display panel including a plurality of pixels and a power line, and displaying an image in a normal mode or a power saving mode, a data driver which provides a data signal to the pixels, and a power supply which supplies a source driving voltage to the data driver and supplies a first power voltage to the power line in the normal mode. The data driver supplies a first auxiliary power voltage to the power line in the power saving mode, and the power supply outputs the first power voltage by decreasing a voltage level of the first power voltage to a first power saving voltage level in a vertical blank period in which the pixels do not display an image during a first switching period changing from the normal mode to the power saving mode.
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