Driver chip, display panel, and driving method thereof
AssigneeTcl China Star Optoelectronics Technology Co., Ltd.
InventorHaoran LI
Life of this patent
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Abstract
A driver chip, a display panel, and a driving method thereof are provided. The driver chip uses a pulse width modulation module and a pulse amplitude modulation module to control a waveform and a strength of a data signal respectively, which can obtain more display grayscales, a to-be-displayed brightness of a light emitting unit is larger, and a gradation level of the light-emitting unit is better. The pulse amplitude modulation module can modulate the strength of the data signal, can compensate the pixels, and improve the display quality of the display panel.
Claims20
A driver chip, comprising:
- a data signal input module connected to a transistor of a pixel for inputting a data signal into the transistor;
- a pulse width modulation module connected to the data signal input module for outputting a waveform corresponding to the data signal to the data signal input module according to a to-be-displayed brightness of the pixel;
- and
- a pulse amplitude modulation module connected to the data signal input module for outputting a strength corresponding to the data signal to the data signal input module according to a to-be-displayed brightness of the pixel;
- wherein the data signal input module is configured to process the waveform corresponding to the data signal and the strength corresponding to the data signal to obtain the data signal after receiving the waveform corresponding to the data signal and the strength corresponding to the data signal.
A display panel including a driver chip and pixels arranged in an array, wherein the driver chip comprises:
- a data signal input module connected to a transistor of one of the pixel for inputting a data signal into the transistor;
- a pulse width modulation module connected to the data signal input module for outputting a waveform corresponding to the data signal to the data signal input module according to a to-be-displayed brightness of the pixel;
- and
- a pulse amplitude modulation module connected to the data signal input module for outputting a strength corresponding to the data signal to the data signal input module according to a to-be-displayed brightness of the pixel;
- wherein the data signal input module is configured to process the waveform corresponding to the data signal and the strength corresponding to the data signal to obtain the data signal after receiving the waveform corresponding to the data signal and the strength corresponding to the data signal.
A driving method of display panel, comprising steps of:
- acquiring a to-be-displayed image of a display panel;
- determining a to-be-displayed brightness of each pixel according to the to-be-displayed image of the display panel;
- determining a display grayscale corresponding to the to-be-displayed brightness of each pixel according to the to-be-displayed brightness of each pixel;
- determining a data signal corresponding to the display grayscale according to the display grayscale corresponding to the to-be-displayed brightness of each pixel;
- determining a waveform and a strength corresponding to the data signal according to the data signal corresponding to the display grayscale;
- and
- actuating a pulse width modulation module and a pulse amplitude modulation module of the driver chip to output the waveform corresponding to the data signal and the strength corresponding to the data signal respectively for displaying the to-be-displayed image.
Dependencies are inferred from the claim text.