Projection display faceplate employing an optically transmissive

Details Projection display faceplate employing an optically transmissive Projection display faceplate employing an optically transmissive

1990-12-21

1992-07-21

Yusko, Donald J.

Electric lamp and discharge devices

With temperature modifier

For envelope wall

313 45, 313 46, 313479, H01J 724

Patent

active

051325853

ABSTRACT:
A display device exhibiting improved thermal performance at the faceplate by utilizing a layer of thermally highly conductive substantially optically transmissive solid material is provided. According to the invention, an optically transmissive display faceplate is disclosed having a substantially planar optically transmissive base sheet or a substantially optically transmissive region of substantially uniform thickness of a cathode ray tube envelope. On the base sheet is disposed at least one layer of substantially optically transmissive solid material, such as a deposited diamond film, with thermal conductivity greater than that of the faceplate material disposed on at least a part of a major surface of the substantially optically transmissive base sheet or substantially optically transmissive region of substantially uniform thickness of a cathode ray tube envelope. The base sheet also includes at least a layer of cathodoluminescent material, which cathodoluminescent material may be preferentially disposed on at least a part of a second major surface of the faceplate or, alternatively, on at least a part of the at least one layer of substantially optically transmissive solid material.

REFERENCES:
patent: 3426230 (1969-02-01), Webb
patent: 3531674 (1970-09-01), Spencer
patent: 3573955 (1971-04-01), Gier et al.
patent: 3672931 (1972-06-01), Grosso et al.
patent: 4484100 (1984-11-01), Sato

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