Vertical Bargraph Display.
Abstract
The program was divided into three separate technical efforts, (1) the mechanical packaging, (2) the electronic circuitry and (3) the liquid crystal plates. The packaging and circuitry efforts proceeded quite smoothly. There were some modifications in both areas due to the desire for interchangeability of L.C. panels for evaluation purposes and variations in lighting schemes but the basic packaging and circuitry concepts proved satisfactory. The liquid crystal plates proved a difficult matter. Because of the subjective evaluation required of the L.C. panel, it was impossible to ascertain the best L.C. cosmetic arrangement. Rather, a series of various combinations of L.C. materials, backplates and lighting systems were assembled and tried. Parallax-face scales combined with effective glass seals also required extensive experimentation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1974
- Accession Number
- ADA002695
Entities
People
- Glen F. Ingle