Scalable One-Panel LCoS System for 4k2k and 8k4k Resolutions

ABSTRACT: Current HMD systems fall short of the desired 20/20 visual acuity due to resolution limitations of the microdisplays utilized. A high-performance, low-cost microdisplay system is proposed, based on a 4096 x 2240 resolution (4.5um pixel pitch) mixed-signal LCoS backplane developed for Digital Cinema Initiative (DCI) applications, capable of nominal 240 fps (80fps/color) operation and beyond. Digitally-controlled analog pixel signal architecture allows for system-specific color performance varying from 10-18 bit, without overloading the interface bandwidth between the driver board and the backplane, which limit all-digital microdisplays beyond 1080p resolution. Phase I will implement conventional DisplayPort architecture to support deep-color 4k2k content inputs, utilizing the experience with 3-D 1080p consumer product (ST1080) release. Firmware and support software development for frame-buffering, color correction, and basic OSD (On Screen Display) features for system implementations will be completed. Phase I will also address the feasibility of further pixel reduction to 3.6 um pitch based on an innovative pixel architecture for 8k4k (33 Mpx) microdisplays for next-generation visual acuity and FOV HMD applications. BENEFIT: A glass-type wearable prototype evaluation consisting of 4k2k resolution microdisplay for each eye will be fabricated, establishing a solid foundation for a highly-scalable microdisplay system comprised of microdisplay, driver board hardware/firmware, and mixed-signal high-bandwidth cabling for Phase II effort where customizable flexible microdisplay system for specific high-resolution military (HMD) and commercial (medical, industrial, cinema, etc.) applications will be fine-tuned and prototyped.