Title :
Liquid-crystal-on-silicon XGA projection display using mixed-mode twisted nematics
Author :
Huang, H.C. ; Kwok, H.S. ; Kwok, S.K. ; Li, C.S.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong
Abstract :
We have developed a highly integrated liquid-crystal-on-silicon display for three-panel color projector. The silicon panel was designed and fabricated by a custom 0.5 μm 3-metal CMOS technology with a spatial resolution of 1024×768 pixels. The pixel pitch was 13.8 μm and the fill factor was 91%. 6-bit digital data drivers and gamma-correction resistor network were integrated within the silicon panel for true gray scale and full color image representation. The display was made with an optimized mixed twisted nematic and birefringence cell configuration for high contrast ratio at CMOS compatible voltage. Contrast ratio was 70:1 at 3.5 Vrms. With a compact optical projector, vivid image and good color saturation were demonstrated
Keywords :
birefringence; colour displays; driver circuits; image resolution; light valves; liquid crystal displays; optical projectors; 1024 pixel; 768 pixel; CMOS technology; Si; birefringence cell configuration; color saturation; compact optical projector; digital data drivers; full color image representation; gamma-correction resistor network; high contrast ratio; highly integrated display; light valve; liquid-crystal-on-Si XGA projection display; mixed-mode twisted nematics; reflective LCD modes; spatial resolution; three-panel color projector; trichroic prism assembly; true gray scale; Birefringence; CMOS technology; Color; Liquid crystal displays; Optical saturation; Pixel; Resistors; Silicon; Spatial resolution; Voltage;
Conference_Titel :
Information Display, 1999. ASID '99. Proceedings of the 5th Asian Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
957-97347-9-8
DOI :
10.1109/ASID.1999.762710
