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US 2020/0027394 A1Published application
Compensation systems and methods for oled display degradation
AssigneeIgnis Innovation Inc.
InventorsShuenn-Jiun Tang, Junhu He, Tong Liu, Gabriel Franklin Yano de Sousa
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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.
Claims20
A method of compensating for degradation in pixels of a display panel module mounted in a host device, each pixel including a light-emitting device, the method comprising:
- during operation of the display panel module, sampling grey level data of image data for each pixel, and sampling temperature data corresponding to each pixel;
- determining an updated correction factor for each pixel as a function of the grey level data and the temperature data for each pixel;
- and
- applying the correction factor for each pixel to the image data for the pixel, generating corrected image data for display by the display panel module.
1 more element
A device comprising:
- a display panel module comprising:
- a display panel including a plurality of pixels, each pixel including a light-emitting device;
- a display processing unit;
- display non-volatile memory;
- and
- display volatile memory;
- an image data block for providing image data to the display panel;
- a host processing unit including:
- host non-volatile memory;
- and
- host volatile memory;
- the host processing unit configured for:
- storing, for each pixel, a correction factor representing a degradation of the pixel in the host non-volatile memory;
- during operation of the display panel, sampling grey level data of the image data received from the image block for each pixel, and temperature data corresponding to the pixel received from the display panel;
- and
- determining an updated correction factor for each pixel as a function of the sampled grey level data and temperature data for each pixel;
- and
- a compensation block for applying the updated correction factor for each pixel to the image data for the pixel received from the image data block, and generating corrected image data for display by the display panel.
15 more elements
Dependencies are inferred from the claim text.