公开(公告)号：US11694596B2

公开(公告)日：2023-07-04

申请号：US16972891

申请日：2020-10-22

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

Inventor： Wenfang Li ,  Yuhua Chang

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2310/08 ,  G09G2330/021

Abstract: An electronic equipment and a display driving system are provided. The display driving system includes a power management circuit and a timing circuit electrically connected to the power management circuit. The power management circuit receives an input voltage and output a working voltage according to the input voltage. The timing circuit receives the working voltage and output a predetermined command to the power management circuit. The power management circuit is further configured to select a predetermined working mode according to the predetermined command such that the power management circuit works in the predetermined working mode.

公开(公告)号：US11315476B2

公开(公告)日：2022-04-26

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

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.