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公开(公告)号：US12230640B2
公开(公告)日：2025-02-18
申请号：US17600327
申请日：2020-12-16
Inventor： Jinfeng Liu
IPC: H01L27/12
Abstract: The present disclosure provides a display device and an electronic device. The display device includes a display panel and a source driving chip. The display panel includes a plurality of traces in a fan-shaped distribution. A plurality of signal output terminals and a plurality of compensation traces are disposed in the source driving chip. The compensation traces are configured to reduce a resistance difference among the plurality of traces in a fan-shaped distribution, and each signal output terminal is electrically connected to a corresponding one of the traces in a fan-shaped distribution using one corresponding compensation trace.
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公开(公告)号：US12112676B2
公开(公告)日：2024-10-08
申请号：US17618406
申请日：2021-11-03
Applicant: HUIZHOU CHINA STAR OPTOELECTRONICS DISPLAY CO., LTD. , TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Inventor： Jinfeng Liu , Yue Fan
IPC: G09G3/20 , G09G3/3208 , G09G3/36
CPC classification number: G09G3/2007 , G09G3/3208 , G09G3/36 , G09G2320/0233
Abstract: A demura method for a display panel includes the steps: obtaining brightness data of a display image at a gray scale value; calculating the brightness data of the display image to obtain demura data of the pixel; dividing bits of the demura data of the pixel into first bits and second bits according to a bit length of the pixel, setting an integer gray scale value of the pixel according to the first bits, and setting a mixed gray scale value of the pixel according to the second bits.
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公开(公告)号：US12057382B2
公开(公告)日：2024-08-06
申请号：US17294842
申请日：2021-04-28
Inventor： Jinfeng Liu
IPC: H01L23/498 , G02F1/1345 , H01L23/13 , H01L23/538 , H10K59/82
CPC classification number: H01L23/49838 , G02F1/13452 , G02F1/13458 , H01L23/13 , H01L23/5386 , H10K59/82 , H01L23/4985 , H01L23/5387
Abstract: A chip on film assembly, a display panel, and a display module are disclosed. The chip on film assembly includes a substrate, an input terminal disposed on a first end of the substrate, a plurality of output terminals disposed on a second end of the substrate, wherein the second end is opposite to the first end, and a plurality of driving chips disposed on a surface of the substrate. The driving chips are electrically connected to the input terminal and are electrically connected to the output terminals by one to one, so space utilization of chip on films (COFs) can be improved, and a problem of insufficient COF bonding spaces for high-resolution products can be solved.
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公开(公告)号：US11997295B2
公开(公告)日：2024-05-28
申请号：US17428302
申请日：2021-05-28
Inventor： Jinfeng Liu
IPC: H04N19/186 , H04N19/182
CPC classification number: H04N19/186 , H04N19/182
Abstract: An image compression method includes: obtaining a grayscale pixel information of an original image, wherein the grayscale pixel information comprises a plurality of sub-grayscale pixel information; scanning the plurality of sub-grayscale pixel information according to a preset first scanning sequence to obtain a first target grayscale pixel information; dividing the first target grayscale pixel information into a plurality of first grayscale areas according to a preset first grayscale difference threshold to generate a first area information; and compressing the sub-grayscale pixel information of each first grayscale area according to the first minimum grayscale pixel value, the first area label, and the plurality of sub-grayscale pixel information, to obtain a first compressed data of the original image. An image compression device, a computer device, and a computer readable storage medium are also provided.
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公开(公告)号：US11978408B2
公开(公告)日：2024-05-07
申请号：US16960556
申请日：2020-06-05
Inventor： Fuyi Wang , Fengcheng Xu , Qingsheng Lan , Jinfeng Liu
CPC classification number: G09G3/342 , G09G3/2022 , G09G3/36 , G09G2320/064
Abstract: A backlight unit, a control method thereof, and a liquid crystal display device are provided. The control method includes following steps: obtaining backlight data corresponding to each of the partitions, the backlight data including multiple bits of data; dividing a frame of a lighting process of each light-emitting unit of the partitions into a plurality of sub-fields having different durations, wherein each of the sub-fields corresponds to one of the bits of data; and outputting the sub-fields having different durations corresponding to each of the partitions in a preset order.
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Patent Agency Ranking
公开(公告)号：US20240029676A1
公开(公告)日：2024-01-25
申请号：US17622809
申请日：2021-12-16
Inventor： Jinfeng Liu
CPC classification number: G09G3/36 , G09G3/3406 , G09G2320/0626 , G09G2330/021
Abstract: The present application provides a backlight driving circuit and a display device. The backlight driving circuit includes a light-emitting module, a light-emitting control module, and a constant current source. Wherein the light-emitting module includes a first light-emitting unit for receiving a first power supply signal and a second light-emitting unit for receiving a second power supply signal. A first connection terminal of the light-emitting control module is electrically connected to the first light-emitting unit, and a second connection terminal is electrically connected to the second light-emitting unit to control the first light-emitting unit and the second light-emitting unit to emit light in a time-division manner.
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公开(公告)号：US11830452B2
公开(公告)日：2023-11-28
申请号：US17600209
申请日：2021-09-09
Inventor： Jinfeng Liu , Fengcheng Xu
IPC: G09G3/36
CPC classification number: G09G3/3648 , G09G3/3677 , G09G3/3688 , G09G2310/0286 , G09G2310/0291 , G09G2310/08 , G09G2320/0233
Abstract: A display panel, a display panel driving method, and an electronic device are provided. The electronic device includes a display panel. The display panel includes a display region, source drive circuits, and a gate drive circuit. The display region includes a plurality of sub-pixels. By reducing the charging time of the sub-pixels close to the gate drive circuit and increasing the charging time of the sub-pixels away from the gate drive circuit, the voltage difference between the sub-pixels in different regions is reduced, thereby solving the problem of uneven brightness of the display panel.
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公开(公告)号：US11694593B2
公开(公告)日：2023-07-04
申请号：US17252402
申请日：2020-11-30
Inventor： Jinfeng Liu
IPC: G09G3/20
CPC classification number: G09G3/2007 , G09G2300/0828 , G09G2310/027 , G09G2310/0286 , G09G2310/0289 , G09G2310/0291 , G09G2310/08 , G09G2330/06
Abstract: The present disclosure provides a display panel and a display device. The display panel includes source driver chips. The source driver chips include charging compensation modules, and each of the charging compensation modules includes: a plurality of shift registers cascadely connected and configured to time-divisionally output a plurality of pulse signals, and a plurality of level shift circuits time-divisionally conducted in response to the plurality of the pulse signals to prevent the plurality of the level shift circuits in the source driver chips from outputting and generating a plurality electron currents at a same time, which would result in a superposition of current peaks and cause electromagnetic interference problems.
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公开(公告)号：US11682356B2
公开(公告)日：2023-06-20
申请号：US17413979
申请日：2021-04-30
Applicant: HUIZHOU CHINA STAR OPTOELECTRONICS DISPLAY CO., LTD. , TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Inventor： Jinfeng Liu
CPC classification number: G09G3/3406 , G09G3/2022
Abstract: The present disclosure discloses a driving method, a driving circuit, and a display device. The driving method includes: acquiring driving data that includes N-bit data; dividing the N-bit data into M groups of sub-bit data in sequence, wherein each group of the sub-bit data includes (N/M)-bit data, M is a positive divisor of N, and M is not 1 or N; and driving, by adopting a corresponding driving voltage and corresponding driving time, a corresponding light-emitting unit to emit light, according to each group of the sub-bit data.
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公开(公告)号：US20230093242A1
公开(公告)日：2023-03-23
申请号：US17440145
申请日：2020-12-29
Inventor： Jinfeng Liu
Abstract: A DC transformer circuit is provided. A first end of an energy storage inductor in the DC transformer circuit is connected with a module output pin in a DC transformer module, and a second end of the energy storage inductor is connected to a grounded terminal. Using the DC transformer circuit can thus generate a negative voltage for a display device. Compared to a DC buck-boost circuit adopted in the existing arts, the DC transformer circuit has an advantage of low cost.
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