Multilayer antireflective coating for video display panel

Details Multilayer antireflective coating for video display panel Multilayer antireflective coating for video display panel

1996-02-13

1996-12-10

Utech, Benjamin

Coating processes

Electrical product produced

Metallic compound coating

427162, 4274193, B05D 512

Patent

active

055828590

ABSTRACT:
A multilayer antireflective coating is applied to the outer surface of a video display panel such as a cathode ray tube (CRT) or a flat panel display in the form of successive thin layers each having a different light refractive index, where the light refractive index of each layer decreases in the direction away from the surface of the display panel and toward the outer layer of the coating. Each layer is formed from the same starting gel materials, with the degree of crosslinking of each gel layer varied to provide the desired light refractive index for reducing reflections from the display panel's outer surface over a wide spectrum. The extent of crosslinking and thus the individual layer's light refractive index is varied by controlling the aging of the gel, with longer aging providing increased crosslinking and larger molecular weight for a lower light refractive index. For example, silica gels aged over different time periods provide gels having a light refractive index ranging from 1.45 (shorter aging) to 1.18 (longer aging).

REFERENCES:
patent: 4361598 (1982-11-01), Yoldas
patent: 4652467 (1987-03-01), Brinker et al.
patent: 4830879 (1989-05-01), Debsikdar
patent: 4966812 (1990-10-01), Ashley et al.
patent: 5150004 (1992-09-01), Tong et al.
patent: 5404073 (1995-04-01), Tong et al.

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