Substrate for liquid crystal display elements
US6778241B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2000 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Apr 23, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133502
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A substrate for liquid crystal display elements is provided, which can meet a variety of required optical characteristics and, at the same time, improve the utilization factor of light without the possibility of inducing a signal delay. A predetermined number of pairs of a transparent film having a high refractive index and a transparent film having a low refractive index, each composed of a dielectric material, are stacked on a transparent substrate. The high refractive index transparent film and the low refractive index transparent film have refractive indices of light of not less than 1.8 and not more than 1.5 at a wavelength of 550 nm, respectively. The predetermined number of pairs is 1 or more, and the high refractive index transparent film and the low refractive index transparent film each have a film thickness thereof set to such a value that the light reflectance in a visible light region of each of the transparent films is within a range of 5-95%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.