Patent ID: 11915635
Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A dimming method of a display panel, comprising:
obtaining a grayscale value of a pending displayed frame, and determining a light-emitting stage of the display panel;
when the light-emitting stage is a first dimming stage, controlling the display panel to emit light by superposing a control signal in a light-emitting signal, wherein the light-emitting signal and the control signal are determined according to the grayscale value of the pending displayed frame; and
when the light-emitting stage is a second dimming stage, controlling the display panel to emit light by the light-emitting signal,
wherein the control signal and the light-emitting signal are synchronously inputted, a frequency of the control signal and a frequency of the light-emitting signal are same, an amplitude of the control signal is less than an amplitude of the light-emitting signal, and a polarity of the amplitude of the control signal is opposite to a polarity of the amplitude of the light-emitting signal,
wherein the first dimming stage is a light-emitting stage when the grayscale value of the pending displayed frame does not exceed a grayscale threshold, the second dimming stage is a light-emitting stage when the grayscale value of the pending displayed frame exceeds the grayscale threshold, and the grayscale threshold is 8%-21% of a maximum grayscale value of the display panel.