TFT LC display having polychromatic glass color filters
US4743098A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1987 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Jan 28, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133516
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The color filters required for a thin film transistor liquid crystal display device are provided by using polychromatic glass for either the front or rear glass panel of the device. Through a series of masking, ultraviolet exposure and heat treating steps, red, green, and blue color areas can be generated in the polychromatic glass. Each of the different colored areas is, of course, to be aligned with one of the individually-addressable pel electrodes in the device. Two embodiments are described. In the first, the polychromatic glass forms the rear glass panel of the device and serves as a substrate for the thin film transistors used to individually address pel electrodes. In an alternate embodiment, the front glass panel of device is treated to form the color filter regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.