Accession Number:

ADA048198

Title:

Liquid Crystal Airborne Display

Descriptive Note:

Final technical rept. Mar 1973-Dec 1976

Corporate Author:

HUGHES AIRCRAFT CO CULVER CITY CA DISPLAY SYSTEMS LAB

Report Date:

1977-08-01

Pagination or Media Count:

260.0

Abstract:

A solid-state liquid crystal television display panel is described. This display has been developed as a replacement for the cathode-ray tube in direct-view and head-up display applications for tactical aircraft. Its key advantages are 1 high contrast in small and large areas, 2 gray shade capability under all levels of illumination including direct-sunlight, 3 uniform high resolution over the entire display area, 4 interface similar to CRT TV display and 5 low power, weight, volume. Cockpit installations have been designed for the display which permit viewing under day and night conditions. Measurements have confirmed that the display brightness and contrast remain superior to the CRT for all single-place cockpit viewing positions under anticipated in-flight illumination conditions. The presentation of gray scale television images under direct sunlight illumination has been demonstrated. The display is built using silicon LSI circuit technology to form the metal-oxide semiconductor addressing circuits which define a matrix of electrodes used to directly activate a liquid crystal film. The present display is 2 in. square and consists of 40,000 elements arranged in a 200 x 200 array. Techniques have been successfully illustrated for increasing the size of the display by assembling a mosaic array of modules that are electrically interconnected.

Subject Categories:

  • Electrical and Electronic Equipment
  • Test Facilities, Equipment and Methods
  • Solid State Physics
  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE