Super twisted nematic liquid crystal display device having the standard deviation of the spherical grains being not more than 3% and the dispersion quantity of the spherical grains being 100-200 grains/mm.sup.2
US5044733A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1990 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Mar 5, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13392
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A super twisted nematic type liquid crystal display device includes two of substrates, at least one of which is made of a plastic film, transparent electrode films disposed on each inner face of the two of the substrates, a plurality of spacers dispersed between the two of the substrates for maintaining the two of the substrates at a predetermined space and a liquid crystal enclosed between said substrates. The spacers are of spherical grains, a standard deviation of a distribution with respect to diameters of the spherical grains is not more than 3.5% of an average diameter of the spherical grains, a dispersion quantity of the spherical grains between said substrates is 100 to 200 grains/mm.sup.2, and the liquid crystal has a twisted angle of 180.degree. to 270.degree. with respect to liquid crystal molecules thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.