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1.发明授权公开(公告)号：US11615752B2
公开(公告)日：2023-03-28
申请号：US17244369
申请日：2021-04-29
发明人： Changju Lee , Yongil Kwon , Yoon-Kyung Choi , Junho Huh
摘要： A backlight device includes LED elements divided into dimming groups; a panel driver configured to output a reference current for driving the LED elements; and pixel circuits, each of which is connected to the panel driver through a common line and is respectively configured to drive first LED elements comprised in a corresponding dimming group. Each of the pixel circuits is configured to: in a first period of a frame period, obtain a reference voltage based on the reference current and store the reference voltage, in a second period of the frame period, obtain luminance data of an image displayed by the corresponding dimming group, and in a third period of the frame period, drive the first LED elements during a light emitting time corresponding to the luminance data obtained in the second period using the reference voltage stored in the first period.
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公开(公告)号：US11942024B2
公开(公告)日：2024-03-26
申请号：US17748380
申请日：2022-05-19
发明人： Yilho Lee , Yongil Kwon , Sugyeung Kang , Taehyeon Kwon , Kangjoo Kim , Sunkwon Kim , Hyunsang Park
CPC分类号： G09G3/32 , G09G3/035 , G09G3/2088 , G09G3/28 , G09G3/30 , G09G3/3208 , G09G3/3611 , G09G2300/0857 , G09G2310/0286 , G09G2310/0289 , G09G2310/0297 , G09G2310/08 , G09G2330/08
摘要： A display device includes: a cell matrix including a first cell line and a second cell line, wherein the first cell line includes first cells sharing first row lines, and the second cell line includes second cells sharing second row lines; a redundancy integrated circuit including a redundancy cell line including redundancy cells, wherein the redundancy cells share a third row line and are connected to the first and second cells through a plurality of column lines and a plurality of connection lines; and a display driver integrated circuit (DDI) configured to replace the first cell line or the second cell line with the redundancy cell line through the first row lines, the second row lines, and the third row line based on whether the first and second cell lines include a bad cell.
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3.发明申请公开(公告)号：US20210350754A1
公开(公告)日：2021-11-11
申请号：US17244369
申请日：2021-04-29
发明人： Changju Lee , Yongil Kwon , Yoon-Kyung Choi , Junho Huh
摘要： A backlight device includes LED elements divided into dimming groups; a panel driver configured to output a reference current for driving the LED elements; and pixel circuits, each of which is connected to the panel driver through a common line and is respectively configured to drive first LED elements comprised in a corresponding dimming group. Each of the pixel circuits is configured to: in a first period of a frame period, obtain a reference voltage based on the reference current and store the reference voltage, in a second period of the frame period, obtain luminance data of an image displayed by the corresponding dimming group, and in a third period of the frame period, drive the first LED elements during a light emitting time corresponding to the luminance data obtained in the second period using the reference voltage stored in the first period.
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公开(公告)号：US12008969B2
公开(公告)日：2024-06-11
申请号：US17958835
申请日：2022-10-03
发明人： Kangjoo Kim , Sugyeung Kang , Yongsik Kwak , Yongil Kwon , Sunkwon Kim , Uijong Song , Sewoong Ahn
IPC分类号： G09G3/34
CPC分类号： G09G3/3426 , G09G2310/0286 , G09G2310/0294 , G09G2320/0233
摘要： A backlight system includes a backlight and a master driving circuit. The backlight includes a plurality of slave driving circuits and a plurality of light sources driven by the plurality of slave driving circuits, wherein the plurality of slave driving circuits are arranged in a matrix of driving rows and driving columns such that first through m-th slave driving circuits, where m is a positive integer greater than one, are arranged in each driving row of the driving rows, and the first through m-th slave driving circuits are connected in a daisy chain structure. The master driving circuit is configured to generate a plurality of input data signals, wherein each input data signal of the plurality of input data signals corresponds to the each driving row, and the each input data signal includes first through m-th packets including luminance data corresponding to the first through m-th slave driving circuits.
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公开(公告)号：US11900865B2
公开(公告)日：2024-02-13
申请号：US18056406
申请日：2022-11-17
发明人： Yongsik Kwak , Sunkwon Kim , Yongil Kwon , Uijong Song , Moonsuk Jeong , Youngkil Choi
CPC分类号： G09G3/32 , G09G3/2007 , G09G2300/0828 , G09G2300/0852 , G09G2310/0291 , G09G2330/021
摘要： A light-emitting diode (LED) driving circuit for driving an LED channel including a plurality of LED elements includes a switch-capacitor amplifier circuit configured to sample received input current and amplify an input voltage corresponding to the input current, a replica circuit configured to connect to the switch-capacitor amplifier circuit in a first period to define a first feedback loop, and an output circuit configured to connect to the switch-capacitor amplifier in a second period to define a second feedback loop. The second period is after the first period, and the output circuit is configured to generate output current according to an output voltage of the switch-capacitor amplifier circuit and provide the output current to the LED.
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公开(公告)号：US12033551B2
公开(公告)日：2024-07-09
申请号：US18212981
申请日：2023-06-22
发明人： Yilho Lee , Yongil Kwon , Sugyeung Kang , Tae-Hyeon Kwon , Sunkwon Kim , Hyunsang Park , Uijong Song
CPC分类号： G09G3/006 , G09G3/32 , G09G2330/12
摘要： Disclosed is integrated circuit panel which detects fault of a driving circuit. The integrated circuit panel includes: a driving circuit array including first and second driving circuits; a data driver configured to output first and second input data signals through first and second data lines, respectively; a switch driver configured to output a switching signal through a switch line; and an error detection driver configured to receive first and second output data signals through first and second test lines, respectively, wherein, in response to the switching signal, the first and second driving circuits are configured to output the first and second output data signals, which are based on the first and second input data signal, through the first and second test lines, respectively, and the error detection driver is configured to detect a fault of the first or second driving circuit based on the first or second output data signal.
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公开(公告)号：US20240127764A1
公开(公告)日：2024-04-18
申请号：US18208543
申请日：2023-06-12
发明人： Junil PARK , Sugyeung KANG , Yongil Kwon , Kang Joo KIM , Alan Kyongho KIM , Sunkwon KIM , Yong-Yun PARK , Jung-Pil LIM , Hyunwook LIM
CPC分类号： G09G3/3426 , G09G5/008
摘要： In a backlight apparatus, a master driving circuit generates a transmission frame including a training period including a clock training pattern and a data period including a plurality of data packets respectively corresponding to the plurality of blocks. A plurality of slave driving circuits correspond to the plurality of blocks, respectively, and are connected to the master driving circuit in a daisy chain structure. Each slave driving circuit receives the transmission frame through the daisy chain structure, recovers a clock based on the clock training pattern, and drives the plurality of light emitting elements included in a corresponding block among the plurality of blocks based on its own data packet among a plurality of data packets.
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公开(公告)号：US11488548B2
公开(公告)日：2022-11-01
申请号：US17373092
申请日：2021-07-12
发明人： Kangjoo Kim , Sugyeung Kang , Yongsik Kwak , Yongil Kwon , Sunkwon Kim , Uijong Song , Sewoong Ahn
IPC分类号： G09G3/34
摘要： A backlight system includes a backlight and a master driving circuit. The backlight includes a plurality of slave driving circuits and a plurality of light sources driven by the plurality of slave driving circuits, wherein the plurality of slave driving circuits are arranged in a matrix of driving rows and driving columns such that first through m-th slave driving circuits, where m is a positive integer greater than one, are arranged in each driving row of the driving rows, and the first through m-th slave driving circuits are connected in a daisy chain structure. The master driving circuit is configured to generate a plurality of input data signals, wherein each input data signal of the plurality of input data signals corresponds to the each driving row, and the each input data signal includes first through m-th packets including luminance data corresponding to the first through m-th slave driving circuits.
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公开(公告)号：US12132491B2
公开(公告)日：2024-10-29
申请号：US18074775
申请日：2022-12-05
发明人： Kyungho Ryu , Yongil Kwon , Kilhoon Lee , Jung-Pil Lim , Hyunwook Lim
CPC分类号： H03L7/091 , G06F1/10 , G11C7/222 , H04L7/0037 , H04L7/0087 , H04L7/033
摘要： The present disclosure provides methods and apparatuses for correcting skew. In some embodiments, a skew correcting device includes a plurality of samplers configured to sample first data based on a plurality of data clock signals with different phases, and a plurality of edge selectors configured to determine to switch at least one data clock signal of the plurality of data clock signals to an edge clock signal according to a sampling result of the plurality of samplers.
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公开(公告)号：US12073773B2
公开(公告)日：2024-08-27
申请号：US17520890
申请日：2021-11-08
发明人： Taehyeon Kwon , Yongil Kwon , Sugyeung Kang , Kangjoo Kim , Sunkwon Kim , Hyunsang Park , Yilho Lee
IPC分类号： G09G3/32
CPC分类号： G09G3/32 , G09G2300/0842 , G09G2310/0267 , G09G2310/0286 , G09G2310/0289 , G09G2310/0297 , G09G2310/08
摘要： A device includes a pixel array, a row driver configured to, generate a plurality of control signals, drive a plurality of rows of the pixel array using the plurality of control signals, and generate a plurality of clock signals, a row multiplexer configured to receive the plurality of clock signals, and transmit one clock signal of the plurality of clock signals, a data driver configured to transmit a plurality of data signals to the pixel array by column units, each pixel of the plurality of pixels includes, a light emitting device, a shift register configured to receive the selectively transmitted clock signal from the row multiplexer, and generate a width adjusted pulse width modulation (PWM) signal based on a desired brightness level of the light emitting device, and a transistor configured to transmit a driving current to the light emitting device based on the PWM signal.
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