Accession Number : ADA296842

Title :   A Simple Four-Domain Twisted Nematic Liquid Crystal Display,

Corporate Author : KENT STATE UNIV OH

Personal Author(s) : Chen, Jianmin ; Bos, Philip J. ; Bryant, Douglas R. ; Johnson, David L. ; Jamal, Syed H.

PDF Url : ADA296842

Report Date : 1994

Pagination or Media Count : 16

Abstract : A particularly simple four-domain(4-D) twisted nematic(TN) liquid crystal display(LCD) device is proposed, which is composed of two left handed TN and two right handed TN subpixels. One of each pair of same handedness subpixels is rotated 180 deg with respect to the other, resulting in four domains that mutually compensate one other optically to provide a wide angle of viewing with no gray scale inversion. The detailed fabrication process is presented for a double SiOx oblique evaporation technique used to realize this 4-D TN LCD. A reverse rubbed polyimide fabrication process has also been successfully used and will be presented in the full length article. We present here the first complete viewing angle and contrast ratio data for a simple and successful 4-D TN LCD cell. jg p.2

Descriptors :   *DISPLAY SYSTEMS, *LIQUID CRYSTALS, *POLYIMIDE RESINS, OPTICS, FABRICATION, OXIDES, LENGTH, SILICON, INVERSION, VISION, EVAPORATION, WIDE ANGLES, GRAY SCALE.

Subject Categories : Polymer Chemistry
      Inorganic Chemistry
      Plastics
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE