Abstract
In micro light-emitting diode (uLED) and organic LED (OLED) displays, a high-frequency, random, pixel nonuniformity known as mura can occur due to material and process variations during fabrication. This disclosure describes techniques for correcting mura using an inkjet process, implemented on the display pixels of emissive displays. Following the measurement of mura, a corrective dimming map is calculated on a per-pixel, per-color basis. A resin with a composition tailored to achieve the target corrective dimming map is inkjetted over the pixels. The inkjetted material can be structured into droplets or into a diffractive surface to increase extraction efficiency and collimation of the uLED light. The techniques advantageously reduce the number of display pipeline bits required to demura, in turn relaxing the bandwidth and processing demands on the display. Greater bit depth is made available for display content leading to improved high dynamic range (HDR) performance, more accurate rendering of brightness and color, etc.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Hoekman, Thomas and Luo, Kang, "Inkjet-based Mura Correction for Emissive Displays", Technical Disclosure Commons, (May 15, 2024)
https://www.tdcommons.org/dpubs_series/7013