Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1990-10-31
1992-02-11
Ramsey, Kenneth J.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
445 37, 430 5, H01J 900, H01J 2907
Patent
active
050878549
ABSTRACT:
A display device having a pattern of conductors recessed on an electrode, thus reducing the risk of the pattern of conductors being damaged such as from a surface scratch. When the pattern of conductors and the plate are separated from each other by an insulating layer, the pattern of conductors screens the insulating layer from the electron beam. The method is characterized in that grooves are formed between the apertures, and an insulating layer and conducting layer are provided on the walls of the apertures and the grooves.
REFERENCES:
patent: 3653900 (1972-04-01), Black
patent: 3713922 (1973-01-01), Lepselter et al.
patent: 4427395 (1984-01-01), Lipp et al.
patent: 4650435 (1987-03-01), Tamutus
patent: 4675525 (1987-06-01), Amingual et al.
Kauwenberg Werner D. P.
Van Der Wilk Ronald
van Moorsel Josephus J.
Van Uden Maria C.
Miller Paul R.
Ramsey Kenneth J.
U.S. Philips Corporation
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