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1.发明公开公开(公告)号：US20240161707A1
公开(公告)日：2024-05-16
申请号：US18423321
申请日：2024-01-26
发明人： Kiwon LEE , Jihoon PARK , Youngjin LIM , Chenghui YAN
IPC分类号： G09G3/34
CPC分类号： G09G3/3406 , G09G2320/0626
摘要： The present disclosure provides a backlight compensation method, device and system, and a storage medium. The method is used to compensate brightness of a plurality of mini-LEDs in a backlight unit, where the plurality of mini-LEDs include M rows and N columns, and both M and N are positive integers greater than 1, and the method includes: acquiring a control signal for controlling the brightness of the backlight unit, and acquiring a row compensation value corresponding to mini-LEDs in each row and a column compensation value corresponding to mini-LEDs in each column; compensating the mini-LEDs in each row and the mini-LEDs in each column according to the row compensation value and the column compensation value, to obtain a compensated control signal; and controlling the brightness of the backlight unit according to the compensated control signal.
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公开(公告)号：US20240096290A1
公开(公告)日：2024-03-21
申请号：US18265651
申请日：2021-10-19
发明人： Kiwon LEE , Youngjin LIM , Chenghui YAN
CPC分类号： G09G3/3406 , G09G3/36 , G09G2320/041 , G09G2320/0626 , G09G2330/021
摘要： A control method for a backlight circuit includes: obtaining a plurality of pieces of dimming data in a preset period of time; determining total accumulated electric energy received by the backlight source according to the plurality of pieces of dimming data in the preset period of time; and generating a first voltage control signal when the total accumulated electric energy reaches a preset electric energy threshold. The dimming data is used to control a backlight source to emit light. The preset period of time is from an initial moment of continuous light emission of the backlight source to a current moment. The first voltage control signal is used to reduce the working voltage of the backlight source. When the total accumulated electric energy reaches the preset electric energy threshold, reducing the working voltage of the backlight source does not affect a light emitting brightness of the backlight source.
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公开(公告)号：US20230142268A1
公开(公告)日：2023-05-11
申请号：US18094336
申请日：2023-01-06
发明人： Jong Dae KIM , Youngjin LIM , Chenghui YAN
摘要： Provided are an LED control system, a device, a method and a storage medium. The system includes: a controller and a plurality of cascaded LED drivers, where the controller is configured to: send a data signal to the plurality of cascaded LED drivers, the data signal includes data packets corresponding to the plurality of LED drivers arranged in sequence, and each LED driver corresponds to a data packet that includes control data and an end bit corresponding to the LED driver. The LED driver is configured to: acquire control data of a preset length from the controller or a previous LED driver, and detect whether the end bit is a preset value; if the end bit is the preset value and there is a next LED driver, transmit a data signal after the end bit to the next driver.
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公开(公告)号：US20240349414A1
公开(公告)日：2024-10-17
申请号：US18757417
申请日：2024-06-27
发明人： Kiwon LEE , Jong Dae KIM , Youngjin LIM , Chenghui YAN
IPC分类号： H05B47/24 , G02F1/13357
CPC分类号： H05B47/24 , G02F1/1336
摘要： A control method, a dimming controller, and a display device, the method including: acquiring a voltage state of each output channel of any number of drive units, where the voltage state includes an undervoltage state, an overvoltage state, and a steady state, and a voltage state of an output channel of each drive unit is determined by the drive unit according to a voltage of the output channel within preset time and a steady operation voltage range; and adjusting, according to the voltage state of each output channel of the any number of drive units, voltages of power supply terminals of all light-emitting units in the back light unit. This solution can reduce power loss of the display device and ensure display of pictures.
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公开(公告)号：US20240304157A1
公开(公告)日：2024-09-12
申请号：US18665581
申请日：2024-05-16
发明人： Honam YIM , Youngjin LIM , Chenghui YAN
CPC分类号： G09G3/342 , G09G3/36 , G09G2320/0257 , G09G2320/064
摘要： Provided are a backlight control method, a device, and a storage medium, where the method includes: acquiring a dimming image corresponding to a display frame sent by a controller, the dimming image matching a display image on a liquid crystal panel; splitting, according to the dimming image, one display frame into a plurality of dimming control frames to control LEDs in a backlight module; where an image corresponding to each dimming control frame is composed of a black image and a partial dimming image which are spliced, and in the plurality of dimming control frames, positions of black images move in a preset direction.
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公开(公告)号：US12027127B2
公开(公告)日：2024-07-02
申请号：US18265651
申请日：2021-10-19
发明人： Kiwon Lee , Youngjin Lim , Chenghui Yan
CPC分类号： G09G3/3406 , G09G3/36 , G09G2320/041 , G09G2320/0626 , G09G2330/021
摘要： A control method for a backlight circuit includes: obtaining a plurality of pieces of dimming data in a preset period of time; determining total accumulated electric energy received by the backlight source according to the plurality of pieces of dimming data in the preset period of time; and generating a first voltage control signal when the total accumulated electric energy reaches a preset electric energy threshold. The dimming data is used to control a backlight source to emit light. The preset period of time is from an initial moment of continuous light emission of the backlight source to a current moment. The first voltage control signal is used to reduce the working voltage of the backlight source. When the total accumulated electric energy reaches the preset electric energy threshold, reducing the working voltage of the backlight source does not affect a light emitting brightness of the backlight source.
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