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公开(公告)号：US20200036288A1
公开(公告)日：2020-01-30
申请号：US16437572
申请日：2019-06-11
Applicant: Samsung Display Co., Ltd.
Inventor： Ki Hyun PYUN , Seung Woon SHIN , Jong Young YUN
Abstract: A driving voltage provider includes: a PLL circuit for generating clock signals with different phases according to a divider value; a DC-DC converter for generating a PWM signal according to the frequency of a first clock signal, and providing a driving voltage based on the duty ratio of the PWM signal; a first tuning circuit for outputting a first tuning signal having a first logic level when the logic levels of first and second sampling signals obtained by sampling the PWM signal at transition times of different clock signals are different, and outputting the first tuning signal having a second logic level when the first and second sampling signals have the same logic level; and a divider value determiner for decreasing the divider value when the logic level of the first tuning signal is the first logic level.
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公开(公告)号：US20240203347A1
公开(公告)日：2024-06-20
申请号：US18404523
申请日：2024-01-04
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Ki Hyun PYUN , Hee Sook PARK
IPC: G09G3/3233 , G09G3/00 , H10K50/115
CPC classification number: G09G3/3233 , G09G3/006 , H10K50/115 , G09G2310/08 , G09G2320/041 , G09G2330/12 , G09G2340/045
Abstract: A display device includes a display panel including a plurality of pixels and partitioned into a plurality of blocks including at least one of the pixels, a timing controller configured to receive input image data from an outside source and generate scaled image data by scaling the input image data using a scale factor, a data driver configured to generate a data signal corresponding to the scaled image data and supply the data signal to the pixels, and a logic circuit configured to generate the scale factor based on the input image data, first weight data, and second weight data different from the first weight data.
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公开(公告)号：US20230126165A1
公开(公告)日：2023-04-27
申请号：US18088435
申请日：2022-12-23
Applicant: Samsung Display Co., Ltd.
Inventor： Ki Hyun PYUN , Min Young PARK , Jong Min SHIM
Abstract: A clock data recovery circuit includes the following elements: a phase detector for outputting a phase adjustment signal by comparing a clock signal of a first node and an input signal; a charge pump for adjusting a charge amount of a second node according to the phase adjustment signal; a first switch including one end coupled to the second node and including another end coupled to a third node; a second switch including one end which receives a bias voltage and including another end coupled to the third node; a capacitor including a first electrode coupled to the third node; third switches; and voltage control oscillators including control terminals coupled to the third node and including output terminals coupled to the first node through the third switches.
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公开(公告)号：US20220277687A1
公开(公告)日：2022-09-01
申请号：US17663345
申请日：2022-05-13
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Ki Hyun PYUN , Jang Mi LEE , Eun Jin CHOI
Abstract: A display device includes a pixel unit including pixels, a timing controller configured to generate image data based on input image data, a data driver configured to generate a data signal corresponding to the image data and supply the data signal to the pixels, a power supply configured to supply a power voltage to the pixel unit, and a power controller configured to calculate a load value and a peak grayscale value based on the input image data, and to generate a power control signal to change a voltage level of the power voltage based on the load value and the peak grayscale value.
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公开(公告)号：US20220215803A1
公开(公告)日：2022-07-07
申请号：US17646547
申请日：2021-12-30
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Ki Hyun PYUN , Hee Sook Park
IPC: G09G3/3258 , G09G3/00
Abstract: A display device includes: a display panel including pixels; a timing controller configured to generate image data based on input image data; a data driver configured to generate a data signal corresponding to the image data and supplying the data signal to the pixels; a power supply configured to supply a first power supply voltage to the display panel; and a power controller configured to calculate a load value and a peak grayscale of the entire display panel based on the input image data, receive feedback voltages of the first power supply voltage from relatively lower quality areas in which IR drop of the first power supply voltage occurs relatively more frequently, and generate a power control signal for changing the level of the first power supply voltage based on the load value, the peak grayscale, and the feedback voltages.
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Patent Agency Ranking
公开(公告)号：US20220157225A1
公开(公告)日：2022-05-19
申请号：US17459554
申请日：2021-08-27
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Eun Jin CHOI , Won Jin SEO , Ki Hyun PYUN
IPC: G09G3/32
Abstract: A display device includes a pixel unit including pixels, a compensator which generate compensation image data by scaling grayscale values of input image data based on temperature data corresponding to an ambient temperature of the pixel unit, a timing controller which generates image data based on the compensation image data, and a data driver which generates a data signal corresponding to the image data and supply the data signal to the pixels. The compensator scales the grayscale values of the input image data in a way such that the grayscale values of the input image data decrease when the ambient temperature is greater than a reference temperature. The compensator scales the grayscale values of the input image data in a way such that the grayscale values of the input image data increase when the ambient temperature is less than the reference temperature.
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公开(公告)号：US20220139299A1
公开(公告)日：2022-05-05
申请号：US17375850
申请日：2021-07-14
Applicant: Samsung Display Co., LTD.
Inventor： Ki Hyun PYUN , Myoung Seop SONG
Abstract: A display device includes: a display panel including a plurality of pixels; a first flexible printed circuit board attached to the display panel and electrically connected thereto; a first printed circuit board attached to the first flexible printed circuit board and electrically connected thereto; a data driver which applies a data voltage to the plurality of pixels, receives a voltage flowing to the plurality of pixels and generates mobility sensing information based on the voltage flowing to the plurality of pixels; and a timing controller which detects a first misalignment between the first printed circuit board and the first flexible printed circuit board, and a second misalignment between the display panel and the first flexible printed circuit board, based on the mobility sensing information.
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28.发明申请公开(公告)号：US20220139289A1
公开(公告)日：2022-05-05
申请号：US17579955
申请日：2022-01-20
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Ki Hyun PYUN , Hee Sook PARK
IPC: G09G3/20
Abstract: A display device includes a display panel having a plurality of pixels, a controller configured to determine a peak luminance based on a target luminance and a black duty ratio that is a ratio of a black insertion period to a sum of an image display period and the black insertion period, to determine gray-luminance information representing a plurality of luminances respectively corresponding to a plurality of gray levels based on the peak luminance and a target gamma value, and to generate gray-voltage information representing a plurality of voltage levels respectively corresponding to the plurality of gray levels based on a target white color coordinate and the gray-luminance information, a gray voltage generator configured to generate a plurality of gray voltages having the plurality of voltage levels based on the gray-voltage information, and a data driver configured to provide the plurality of gray voltages corresponding to output image data as data voltages to the plurality of pixels in the image display period, and to provide a black data voltage to the plurality of pixels in the black insertion period.
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公开(公告)号：US20210350764A1
公开(公告)日：2021-11-11
申请号：US17133207
申请日：2020-12-23
Applicant: Samsung Display Co., Ltd.
Inventor： Ki Hyun PYUN , Eun Jin CHOI
IPC: G09G5/10
Abstract: A display device comprises a display area including a plurality of pixels, a peak driving determination part determining peak driving based on an input image signal, a normal driving compensation part including a first luminance lookup table having a first luminance as a peak luminance, a peak driving compensation part including a second luminance lookup table having a second luminance higher than the first luminance as a peak luminance, a compensation adjusting part that generates a peak driving gamma curve by smoothing a first and second luminance gamma curves corresponding to the first and second luminance lookup tables and generates a peak driving lookup table according to the peak driving gamma curve, and a signal controller generating an image data signal by applying one normal driving lookup table to a portion of the display area and applying the peak driving lookup table to an other portion of the display area.
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公开(公告)号：US20210264843A1
公开(公告)日：2021-08-26
申请号：US17024608
申请日：2020-09-17
Applicant: Samsung Display Co., Ltd.
Inventor： Ki Hyun PYUN , Won Jin SEO , Eun Jin CHOI
IPC: G09G3/20
Abstract: A display device includes a plurality of pixels grouped into blocks divided into block rows extending in a first direction and arranged in a second direction, wherein each block includes two or more pixels connected to a first power source line, and each pixel is assigned with a grayscale value in a range of grayscale values that is divided into a plurality of grayscale sections; and a first power source voltage adjuster selecting a reference block row, and determining a magnitude of a first power source voltage supplied to the first power source line based on a number of blocks in the reference block row having a grayscale section that is same as a maximum grayscale section of the reference block row. The maximum grayscale section corresponds to a grayscale section that includes a largest grayscale value having a grayscale value ratio greater than a minimum ratio.
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