ACTIVE SILICON CMOS ADDRESSING MATRICES FOR LIGHT-VALVE PROJECTION DISPLAYS

In the second part of this three-paper series, the design and the fabr ication of monolithic active matrices for addressing metallized viscoe lastic light-valve control layers are described together with the requ ired external electronics. The active matrices were fabricated by mean s of standard silicon CMOS technology. Special matrix features are sig nal-handling capabilities of 30 V, optimized surface planarity and ext remely low light sensitivity. The on-chip addressing circuitry exceeds HDTV speed requirements. Three identical matrix samples coated with m etallized viscoelastic control layers were successfully demonstrated a s spatial light modulators for the read-out light from a xenon are lam p in a full-colour schlieren-optical dark-field projection system. Res ults obtained with medium-sized active matrices are presented; larger matrix versions were already fabricated in small numbers, but not yet tested.