公开(公告)号：US11942037B1

公开(公告)日：2024-03-26

申请号：US18318645

申请日：2023-05-16

Applicant: Novatek Microelectronics Corp.

Inventor： Zi-Yi Lian ,  Yen-Tao Liao

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2320/0247 ,  G09G2340/0435

Abstract: An organic light emitting diode (OLED) display control circuit and a control method thereof are provided. The OLED control circuit includes a counting unit, a judgment unit, a remainder calculation unit and a signal compensation unit. The counting unit counts display lines of a current frame according to a vertical synchronization signal to generate a first count value. The judgment unit compares the first count value and a second count value to generate a judgment result. The second count value represents the number of display lines of a previous frame preceding to the current frame. The remainder calculation unit calculates a remainder generated by dividing the first count value by a period of an emission control signal. The signal compensation unit adjusts the emission control signal to compensate for an incomplete period of the emission control signal occurring in the end of the current frame period.

公开(公告)号：US20250046240A1

公开(公告)日：2025-02-06

申请号：US18361937

申请日：2023-07-31

Applicant: Novatek Microelectronics Corp.

Inventor： Zi-Yi Lian ,  Yen-Tao Liao

IPC: G09G3/3208

Abstract: The invention provides a display device and a Mura compensation method thereof. The display device includes a display panel and a Mura compensation circuit. The Mura compensation circuit defines a compensation area in the display panel based on a curve equation corresponding to a current frame rate of the display panel. The Mura compensation circuit calculates a compensation weight in the compensation area based on the current frame rate and the curve equation. The Mura compensation circuit uses the compensation weight to compensate a pixel data in the compensation area so as to generate a compensated pixel data frame. The Mura compensation circuit provides the compensated pixel data frame to the display panel for displaying images.