Title :
A 640 x 480 pixel computer display using pin diodes with device redundancy
Author :
Yaniv, Z. ; Cannella, V. ; Baron, Y. ; McGill, J. ; Vijan, M.
Author_Institution :
Ovonic Imaging Syst., Troy, MI, USA
Abstract :
A report is presented of the successful development of a (640*480)-pixel computer monitor display with a 6 in.*8 in. viewing area using pin diode switches with complete device redundancy. This active matrix liquid-crystal display has an area contrast ratio greater than 20:1 near normal viewing, and greater than 3:1 for horizontal viewing angles of +or-70 degrees . The display can be configured as reflective, transmissive, or transflective. Because of the device redundancy, the absence of crossing lines, the simple diode structure, and the use of a large area projection stepper in processing, the displays show very high yield despite the large size. This high yield makes it ideal for high-volume production as a laptop-computer display.<>
Keywords :
computer graphic equipment; liquid crystal displays; semiconductor diodes; semiconductor switches; 307200 pixel; 480 pixel; 6 inch; 640 pixel; 8 inch; active matrix liquid-crystal display; computer display; device redundancy; high-volume production; horizontal viewing angles; laptop-computer display; large area projection stepper; normal viewing; pin diodes; reflective display; transflective display; transmissive display; Active matrix liquid crystal displays; Active matrix organic light emitting diodes; Amorphous silicon; Computer displays; Contacts; Dielectric substrates; Liquid crystal devices; Liquid crystal displays; Pixel; Switches;
Conference_Titel :
Display Research Conference, 1988., Conference Record of the 1988 International
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/DISPL.1988.11297
