Compensation systems and methods for display oled degradation
AssigneeIgnis Innovation Inc.
InventorsShuenn-Jiun Tang, Junhu He
Life of this patent
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Abstract
What is disclosed are systems and methods for compensating for display OLED degradation. Correction factors k for OLED degradation of each sub-pixel is modelled and tracked based on grey level, temperature, and time, and used to correct image data provided to an OLED display.
Claims21
A method for compensating for degradation of sub-pixels of an emissive display panel of a host device, each sub-pixel having a light-emitting device, the method comprising:
- storing for each sub-pixel a correction factor representing a degradation of the sub-pixel in non-volatile memory;
- during operation of the display panel, sampling grey level data of the image data for each sub-pixel, and temperature data corresponding to said sub-pixel;
- determining an updated correction factor for each sub-pixel as a function of the sampled grey level data and temperature data for each sub-pixel;
- and
- applying the correction factor for each sub-pixel to the image data for the sub-pixel, generating corrected image data for display by the emissive display panel.
A degradation compensation system for compensating for degradation of sub-pixels of an emissive display panel of a host device, each sub-pixel having a light-emitting device, the system comprising:
- an image data block;
- a non-volatile memory;
- the emissive display panel;
- and
- a processing unit for:
- storing for each sub-pixel a correction factor representing a degradation of the sub-pixel in non-volatile memory;
- during operation of the display panel, sampling grey level data of the image data received from the image block for each sub-pixel, and temperature data corresponding to said sub-pixel received from the emissive display panel;
- and
- determining an updated correction factor for each sub-pixel as a function of the sampled grey level data and temperature data for each sub-pixel;
- and
- a compensation block for applying the correction factor for each sub-pixel to the image data for the sub-pixel received from the image data block, generating corrected image data for display by the emissive display panel.
Dependencies are inferred from the claim text.