公开(公告)号：US20210366337A1

公开(公告)日：2021-11-25

申请号：US16619473

申请日：2019-11-14

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

Inventor： Wenfang LI ,  Dan CAO

IPC: G09G3/20 ,  G11C5/14

Abstract: The present disclosure proposes a power management chip, a driving method, and a driving system. The power management chip includes a register, a signal receiving circuit configured to receive a second voltage data, and a processing circuit configured to examine the first voltage data and the second voltage data and write the second voltage data into the register when the first voltage data and the second voltage data are different. After the signal receiving circuit receives the second voltage data, the processing circuit examines the first voltage data and the second voltage data to prevent the first voltage data from being modified. This prevents the abnormality of the display and solves the above-mentioned problem of a conventional power management chip, whose data may be modified such that the display panel abnormally displays.

公开(公告)号：US20210358353A1

公开(公告)日：2021-11-18

申请号：US16626332

申请日：2019-11-22

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

Inventor： Wenfang LI ,  Dan CAO

IPC: G09G3/00

Abstract: An electrical level shifting chip and a display device are provided. The electrical level shifting chip includes an electrical level shifting module, an overcurrent protecting module, and a controlling module. The control module is configured to detect whether the electrical level shifting chip is in an electrostatic discharge test mode and to disable the overcurrent protecting module when the electrical level shifting chip is in the electrostatic discharge test mode. Avoid the overcurrent protecting module from being disturbed and causing malfunction during an electrostatic discharge test.

公开(公告)号：US20210335205A1

公开(公告)日：2021-10-28

申请号：US16627379

申请日：2019-12-11

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

Inventor： Wenfang LI ,  Dan CAO ,  Xianming ZHANG

IPC: G09G3/20

Abstract: The present application provides a display panel driving system and a display device. The display panel driving system includes a memory, a timing control integrated circuit (IC), and a panel driving IC. The memory is configured to store driving data. The timing control IC is configured to download the driving data from the memory during a startup phase, and send the driving data to the panel driving IC. Therefore, multiple ICs can share a single memory, which reduces costs.

公开(公告)号：US20210166596A1

公开(公告)日：2021-06-03

申请号：US16627303

申请日：2019-12-16

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

Inventor： Fengcheng XU ,  Dan CAO ,  Mingjong JOU

IPC: G09G3/20 ,  G09G5/18

Abstract: A signal processing method of a display panel and a device using same are provided. The method includes obtaining a bit error rate of each adjusted data to obtain multiple initial bit error rates; and selecting one of the initial bit error rates from the multiple initial bit error rates. The bit error rate is used as a feedback bit error rate; when the feedback bit error rate falls within a preset range, a current pre-emphasis coefficient is used as a target pre-emphasis coefficient, and a video signal is compensated according to the target pre-emphasis coefficient.