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公开(公告)号：US20240046834A1
公开(公告)日：2024-02-08
申请号：US18382139
申请日：2023-10-20
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sung Chun PARK , Yoon Young LEE
CPC classification number: G09G3/20 , H02M3/158 , H02M1/32 , G09G2330/021 , G09G2330/028 , H02M1/0032
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：US20200302849A1
公开(公告)日：2020-09-24
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：US20200153344A1
公开(公告)日：2020-05-14
申请号：US16680945
申请日：2019-11-12
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：US20210375214A1
公开(公告)日：2021-12-02
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: 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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公开(公告)号：US20210366341A1
公开(公告)日：2021-11-25
申请号：US17397053
申请日：2021-08-09
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 to 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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Patent Agency Ranking
公开(公告)号：US20190172379A1
公开(公告)日：2019-06-06
申请号：US16132905
申请日：2018-09-17
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sung Chun PARK , Yoon Young LEE
CPC classification number: G09G3/20 , G09G2330/021 , G09G2330/028 , H02M1/32 , H02M3/158 , H02M2001/0032
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 to 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：US20230318458A1
公开(公告)日：2023-10-05
申请号：US18153132
申请日：2023-01-11
Applicant: SAMSUNG DISPLAY CO ., LTD.
Inventor： Yoon Young LEE , Sung Chun PARK
IPC: H02M3/158 , H02M1/00 , H02M1/088 , G09G3/3233
CPC classification number: H02M3/1584 , H02M1/0009 , H02M1/088 , G09G3/3233 , G09G2300/0842 , G09G2300/0819 , G09G2330/021 , G09G2330/028 , G09G2320/0247
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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公开(公告)号：US20230155474A1
公开(公告)日：2023-05-18
申请号：US17825825
申请日：2022-05-26
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Yang UK NAM , Sung Chun PARK
IPC: H02M1/00 , G06F1/3296 , G06F1/3206 , G06F1/3234 , H02M3/158
CPC classification number: H02M1/0032 , G06F1/3296 , G06F1/3206 , G06F1/3265 , 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：US20220093040A1
公开(公告)日：2022-03-24
申请号：US17321235
申请日：2021-05-14
Applicant: Samsung Display Co., Ltd.
Inventor： Dong Kwan HAN , Sung Chun PARK
IPC: G09G3/3225
Abstract: A display device and an operating method of the display device are provided. The display device may include: a first transistor controlled by a first control signal to connect an input terminal to which an input voltage is applied and a first node; a second transistor controlled by a second control signal to connect a second node to which a power supply voltage is outputted and the first node; an overcharge recognition circuit configured to receive a first reference voltage, a feedback voltage, and a second reference voltage, to determine whether it is overcharged, and to output an overcharge recognition signal; and a discharge circuit configured to provide a first discharge path for discharging the power supply voltage based on an enable signal generated depending on the overcharge recognition signal.
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公开(公告)号：US20210242782A1
公开(公告)日：2021-08-05
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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