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公开(公告)号：US11942868B2
公开(公告)日：2024-03-26
申请号：US18153132
申请日：2023-01-11
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Yoon Young Lee , Sung Chun Park
CPC classification number: H02M3/1584 , G09G3/3233 , H02M1/0009 , H02M1/088 , G09G2300/0819 , G09G2300/0842 , G09G2320/0247 , G09G2330/021 , G09G2330/028 , H02M3/156 , H02M3/1586 , H02M3/33507
Abstract: A power provider includes: first, second, and third inductors; a first transistor connected to the second inductor; a second transistor connected to the third inductor; and a power integrated chip (IC) including input terminals connected to the first, second, and third inductors, and an output terminal connected to a power line. The power provider may supply the power voltage using the first inductor and the power IC when power current is less than a first reference value, supply the power voltage using the second inductor, the first transistor, and the power IC when the power current is greater than the first reference value and less than a second reference value, and supply the power voltage using the second and third inductors, the first and second transistors, and the power IC when the power current is greater than the second reference value.
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2.发明授权公开(公告)号：US11620941B2
公开(公告)日：2023-04-04
申请号：US17012755
申请日：2020-09-04
Applicant: Samsung Display Co., Ltd.
Inventor： Yoon Young Lee , Sung Chun Park , Chang Seok Chae
IPC: G09G3/3208 , H02M3/158 , H02M1/084
Abstract: A DC-DC includes a sensor, a determiner, a reference voltage controller and an output voltage controller. The sensor is configured to sense an output voltage to generate a sensed signal. The determiner is electrically connected to the sensor and is configured to determine a difference between the sensed signal and a first protection level for generating a determiner output. The reference voltage controller is electrically connected to the determiner and is configured to generate a second reference voltage based on a first reference voltage and a value of the determiner output. The output voltage controller is electrically connected to the sensor and is configured to output the output voltage based on an input voltage, a feedback voltage of the output voltage, and the second reference voltage.
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公开(公告)号：US11437912B2
公开(公告)日：2022-09-06
申请号：US17236542
申请日：2021-04-21
Applicant: Samsung Display Co., Ltd.
Inventor： Sung Chun Park
Abstract: A DC-DC converter including a first power supply including a first converter outputting a first power voltage, a first sensor detecting a panel current from an output of the first converter; and a first output group including a plurality of inverting converters outputting a second power voltage based on the panel current; a second power supply including a second converter outputting the first power voltage, and a second output group including a plurality of inverting converters outputting the second power voltage based on the panel current; and a first phase controller controlling operations of the inverting converters included in each of the first and second output groups based on the detected panel current. The second power supply operates when the panel current exceeds a predetermined enable value.
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公开(公告)号：US11308835B2
公开(公告)日：2022-04-19
申请号：US16667208
申请日：2019-10-29
Applicant: Samsung Display Co., Ltd.
Inventor： Yoon Young Lee , Sung Chun Park
IPC: G09G3/20
Abstract: A display device includes a display panel to display an image, a data driver to supply a data signal to the display panel, and a power supply to supply a driving voltage to the display panel through a power supply line and to supply a data driving voltage to the data driver, in which the power supply is configured to detect a voltage of the power supply line during an initial driving period during which the data driving voltage is supplied to the data driver, to supply a ground voltage to the display panel when the voltage detected from the power supply line is different from a reference voltage, and to supply the driving voltage to the power supply line after the initial driving period.
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公开(公告)号：US11270653B2
公开(公告)日：2022-03-08
申请号：US17161489
申请日：2021-01-28
Applicant: Samsung Display Co., Ltd.
Inventor： Hyun Chang Kim , Sung Chun Park , Dong Kwan Han
IPC: G06F1/00 , G09G3/3275
Abstract: A display device includes the following elements: a display panel comprising pixels; a data driver supplying data signals to the plurality of pixels; a driving voltage supply supplying a first driving voltage to the data driver; a power supply supplying a first input driving voltage to the driving voltage supply; and a timing controller providing control signals to the data driver, the driving voltage supply, and the power supply and providing luminance information and per-second frame rate information of the display panel to the driving voltage supply. The driving voltage supply comprises an input driving voltage adjuster which adjusts the first input driving voltage to a second input driving voltage based on the luminance information and the per-second frame rate information.
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Patent Agency Ranking
公开(公告)号：US11250762B2
公开(公告)日：2022-02-15
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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公开(公告)号：US11087664B2
公开(公告)日：2021-08-10
申请号：US16895510
申请日：2020-06-08
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sung Chun Park , Yoon Young Lee
Abstract: A direct current-to-direct current (“DC-DC”) converter includes: a first converter which outputs a first power voltage in a normal mode or a power saving mode based on a inductor current generated therein, where the first converter operates in a first driving manner in the normal mode, and operates in a second driving manner in the power saving mode; a second converter which outputs a second power voltage based on a inductor current generated therein, where the second converter operates in a third driving manner in the power saving mode, and a magnitude of the second power voltage in the power saving mode is different from that in the normal mode; and a mode selector which supplies a mode control signal to the first and second converters, where the first and second converters are driven in the normal mode or the power saving mode based on the mode control signal.
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公开(公告)号：US12165555B2
公开(公告)日：2024-12-10
申请号：US18382139
申请日：2023-10-20
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sung Chun Park , Yoon Young Lee
Abstract: A direct current-to-direct current (“DC-DC”) converter includes: a first converter which outputs a first power voltage in a normal mode or a power saving mode based on a inductor current generated therein, where the first converter operates in a first driving manner in the normal mode, and operates in a second driving manner in the power saving mode; a second converter which outputs a second power voltage based on a inductor current generated therein, where the second converter operates in a third driving manner in the power saving mode, and a magnitude of the second power voltage in the power saving mode is different from that in the normal mode; and a mode selector which supplies a mode control signal to the first and second converters, where the first and second converters are driven in the normal mode or the power saving mode based on the mode control signal.
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公开(公告)号：US12027961B2
公开(公告)日：2024-07-02
申请号：US17825825
申请日：2022-05-26
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Yang Uk Nam , Sung Chun Park
IPC: G09G5/00 , G06F1/3206 , G06F1/3234 , G06F1/3296 , H02M1/00 , 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：US11632049B2
公开(公告)日：2023-04-18
申请号：US17901393
申请日：2022-09-01
Applicant: Samsung Display Co., Ltd.
Inventor： Sung Chun Park
Abstract: A DC-DC converter including a first power supply including a first converter outputting a first power voltage, a first sensor detecting a panel current from an output of the first converter; and a first output group including a plurality of inverting converters outputting a second power voltage based on the panel current; a second power supply including a second converter outputting the first power voltage, and a second output group including a plurality of inverting converters outputting the second power voltage based on the panel current; and a first phase controller controlling operations of the inverting converters included in each of the first and second output groups based on the detected panel current. The second power supply operates when the panel current exceeds a predetermined enable value.
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