公开(公告)号：US20220061149A1

公开(公告)日：2022-02-24

申请号：US16616454

申请日：2019-07-03

Applicant: TCL China Star Optoelectronics Technology Co., Ltd.

Inventor： Jianfeng XIAO

IPC: H05K1/02

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.

公开(公告)号：US20210367575A1

公开(公告)日：2021-11-25

申请号：US16627368

申请日：2019-12-26

Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD

Inventor： Jianfeng XIAO

IPC: H03H7/01

Abstract: A filter circuit and an electronic equipment are provided. The filter circuit, electrically connected between a power module and an integrated circuit control module, includes a capacitor unit, a ferrite bead component, and a filter capacitor. The capacitor unit is electrically connected to a first node of the power module. The ferrite bead component is electrically connected to a second node of the integrated circuit control module and the first node of the power module. The filter capacitor is electrically connected to the second node of the integrated circuit control module. The ferrite bead component has a zero resistance. This reduces the ripple of the power signal, outputted by the power module, after the power signal passes through the ferrite bead component, solving the above-mentioned EMI issue, and improving the performance of the IC.

公开(公告)号：US20240021123A1

公开(公告)日：2024-01-18

申请号：US17608138

申请日：2021-08-24

Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Haoran LI ,  Jianfeng XIAO

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2330/021 ,  G09G2320/043 ,  G09G2320/041 ,  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.

公开(公告)号：US20220415229A1

公开(公告)日：2022-12-29

申请号：US17429337

申请日：2021-07-27

Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Haoran LI ,  Jianfeng XIAO

IPC: G09G3/20

Abstract: Please replace Abstract with the following amended 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.

公开(公告)号：US20210165260A1

公开(公告)日：2021-06-03

申请号：US16626267

申请日：2019-12-12

Applicant: TCL China Star Optoelectronics Technology Co., Ltd.

Inventor： Jianfeng XIAO

IPC: G02F1/133 ,  G02F1/1362 ,  G09G3/36

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.