Title :
True color 1024×768 microdisplay with analog in-pixel pulsewidth modulation and retinal averaging offset correction
Author :
Blalock, Travis N. ; Gaddis, Neela B. ; Nishimura, Ken A. ; Knotts, Thomas A.
Author_Institution :
Agilent Labs., Palo Alto, CA, USA
fDate :
5/1/2001 12:00:00 AM
Abstract :
A liquid-crystal-on-silicon microdisplay based on a 1024×768 two-dimensional pixel array fabricated in a digital 0.35-μm CMOS process displays images with a color depth of 8 bits per color. The pixel pitch is 12 μm and the total chip area is 214 mm2. Pixel brightness is controlled by modulating the pulsewidth of the pixel voltage drive signal with an in-pixel analog pulsewidth modulation (PWM) circuit which utilizes human optic nerve spatio-temporal averaging to eliminate comparator offset. The 16 million transistor chip displays images at a maximum rate of 85 Hz and has a power dissipation of 200 mW from a single 3.3-V supply
Keywords :
CMOS integrated circuits; colour displays; liquid crystal displays; pulse width modulation; 0.35 micron; 1024 pixel; 200 mW; 3.3 V; 768 pixel; 85 Hz; Si; analog in-pixel pulsewidth modulation circuit; brightness; color liquid-crystal-on-silicon microdisplay; digital CMOS process; retinal averaging offset correction; two-dimensional pixel array; CMOS process; Color; Liquid crystal displays; Microdisplays; Optical pulses; Pixel; Pulse circuits; Pulse width modulation; Space vector pulse width modulation; Two dimensional displays;
Journal_Title :
Solid-State Circuits, IEEE Journal of
