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公开(公告)号：US20210335307A1
公开(公告)日：2021-10-28
申请号：US16617100
申请日：2019-09-30
Inventor： Jianfeng Xiao
IPC: G09G3/36
Abstract: A driving method for a liquid crystal display panel is provided. The driving method in a first stage of the N+1th frame makes the first to the mth scan lines respectively control the first row to the mth row of subpixels to be sequentially turned on to make the m+1th to the 2mth of the scan lines respectively control the m+1th row to the 2mth row of the subpixels to be sequentially turned on, and transmits the overdrive voltage corresponded to the overdrive grayscale value to the subpixel during each subpixel being turned on; and in a second stage of the N+1th frame, does same as the first stage before transmits the overdrive voltage, and then transmits the driving voltage corresponded to the second grayscale value to the subpixel during each subpixel being turned on. Furthermore, the nth scan line and the n+mth scan line are simultaneously turned on.
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公开(公告)号：US11158276B1
公开(公告)日：2021-10-26
申请号：US16617100
申请日：2019-09-30
Inventor： Jianfeng Xiao
IPC: G09G3/36
Abstract: A driving method for a liquid crystal display panel is provided. The driving method in a first stage of the N+1th frame makes the first to the mth scan lines respectively control the first row to the mth row of subpixels to be sequentially turned on to make the m+1th to the 2mth of the scan lines respectively control the m+1th row to the 2mth row of the subpixels to be sequentially turned on, and transmits the overdrive voltage corresponded to the overdrive grayscale value to the subpixel during each subpixel being turned on; and in a second stage of the N+1th frame, does same as the first stage before transmits the overdrive voltage, and then transmits the driving voltage corresponded to the second grayscale value to the subpixel during each subpixel being turned on. Furthermore, the nth scan line and the n+mth scan line are simultaneously turned on.
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Patent Agency Ranking
公开(公告)号：US11310906B2
公开(公告)日：2022-04-19
申请号：US16616454
申请日：2019-07-03
Inventor： Jianfeng Xiao
Abstract: A printed circuit board and a display device are provided. A second wiring layer of the PCB includes a trace group, a system ground and an output pin group that includes power supply pins and a reference ground pin. One end of the power trace of the trace group is connected to one power supply pin, and another end of the power trace extends toward the system ground line. The insulating layer has a via hole corresponding to an overlapping portion of the power trace and the positive power supply signal line. The reference ground trace is disposed between the two power traces. The reference ground trace is between the reference ground pin and the system ground line. Voltage on the reference ground pin is stable to provide a stable power supply voltage. The ripple of the power supply voltage is reduced. The electromagnetic interference resistance is strong.
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公开(公告)号：US11042053B1
公开(公告)日：2021-06-22
申请号：US16626267
申请日：2019-12-12
Inventor： Jianfeng Xiao
IPC: G02F1/133 , G02F1/1362 , G09G3/36 , G02F1/1333
Abstract: The present invention provides a light modulating method, a light modulating device and a storage medium. The method is applied to a display device and includes: acquiring a light modulating instruction; according to the light modulating instruction, partitioning a displaying region of the display device to form a plurality of light modulating regions; and disposing a light modulating signal in each of the light modulating regions; wherein first electrical level duty ratios of the light modulating signals disposed in the light modulating regions are staggered.
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公开(公告)号：US20240036392A1
公开(公告)日：2024-02-01
申请号：US17622781
申请日：2021-12-10
Inventor： Jinfeng Liu , Youngil Ban , Jianfeng Xiao
IPC: G02F1/13357 , G09G3/34 , G09G3/32
CPC classification number: G02F1/133603 , G09G3/3406 , G09G3/32
Abstract: A backlight driving circuit and a display device are provided. The backlight driving circuit includes a light-emitting unit, a detection module, a power supply chip, and a voltage regulating module. The detection module receives a preset voltage and is electrically connected to a second electrode of the light-emitting unit to output a control voltage. The power supply chip is configured to output a reference voltage. The voltage regulating module receives the control voltage and the reference voltage, and is electrically connected to a first electrode of the light-emitting unit and a ground terminal to output a power supply voltage to the first electrode of the light-emitting unit.
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公开(公告)号：US12087193B2
公开(公告)日：2024-09-10
申请号：US17608138
申请日：2021-08-24
Inventor： Haoran Li , Jianfeng Xiao
IPC: G09G3/20
CPC classification number: G09G3/20 , G09G2320/041 , G09G2320/043 , G09G2330/021 , G09G2330/08
Abstract: A driving circuit is provided and includes a first transistor electrically connected to a first control terminal, a first voltage terminal and a first node; and a second transistor electrically connected to a second control terminal, the first node and a ground terminal; and an inductor, a first terminal thereof is electrically connected to the first node, and a second terminal thereof is electrically connected to a second voltage terminal; and a shunt module electrically connected to the first node and the ground terminal, and the shunt module is configured to provide a current loop to shunt a current flowing through the second transistor.
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公开(公告)号：US11538386B1
公开(公告)日：2022-12-27
申请号：US17429337
申请日：2021-07-27
Inventor： Haoran Li , Jianfeng Xiao
IPC: G09G3/20
Abstract: A reference voltage generation circuit is provided. The reference voltage generation circuit reduces a potential difference between a reference voltage less than a first data driving voltage and a data driving voltage, namely, the potential difference between a lower reference voltage and the data driving voltage is reduced. Therefore, the power loss of a voltage dividing module is reduced to prevent the problems of reduced reliability and reduced service life of a drive circuit board due to excessive internal temperature.
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