Method and device for compensating brightness of AMOLED display panel
AssigneeShenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorsYufan Deng, Shen-Sian Syu
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Abstract
A method and a device for compensating brightness of an AMOLED display panel are provided. The method is simple, and the device is simple in structure and is easy to operate. By performing an aging experiment on the display panel in advance, an attenuation law that the brightness of sub-pixels varies with time and gray levels is obtained, and a compensation data is computed and a dynamic compensation table is generated. A correcting module corrects the inputted original gray levels based on the dynamic compensation table and the brightness of sub-pixels are compensated such that the display panel can display images normally.
Claims13
A method for compensating brightness of an active-matrix organic light-emitting diode (AMOLED) display panel, comprising:
- utilizing a compensation circuit cooperating with the AMOLED display panel to compensate the brightness of the AMOLED display panel by performing steps of:
- converting a video signal into gray levels;
- correcting the gray levels according to a dynamic compensation table;
- enabling an image displayed with the corrected gray levels;
- and
- computing an attenuation law according to the corrected gray levels and modifying the dynamic compensation table over time based on the attenuation law,
- utilizing the AMOLED display panel to display the image with the corrected gray levels.
A system for compensating brightness of an active-matrix organic light-emitting diode (AMOLED) display panel, comprising:
- a compensation circuit cooperating with the AMOLED display panel to compensate the brightness of the AMOLED display panel, the compensation circuit configured to:
- convert a video signal into gray levels;
- correct the gray levels according to a dynamic compensation table;
- enable an image displayed with the corrected gray levels;
- and
- compute an attenuation law according to the corrected gray levels and modify the dynamic compensation table over time based on the attenuation law,
- the AMOLED display panel, configured to display the image with the corrected gray levels,
- wherein a one-to-one correspondence exists between a compensation data and at least one of a gray-level electric current, time, and a pixel brightness decline in the dynamic compensation table.
A system for compensating brightness of an active-matrix organic light-emitting diode (AMOLED) display panel, comprising:
- a compensation circuit cooperating with the AMOLED display panel to compensate the brightness of the AMOLED display panel, the compensation circuit configured to:
- convert a video signal into gray levels;
- correct the gray levels according to a dynamic compensation table;
- enable an image displayed with the corrected gray levels;
- and
- compute an attenuation law according to the corrected gray levels and modify the dynamic compensation table over time based on the attenuation law,
- the AMOLED display panel, configured to display the image with the corrected gray levels.
Dependencies are inferred from the claim text.