Image pick-up tube target having transparent conductive strips w

Details Image pick-up tube target having transparent conductive strips w Image pick-up tube target having transparent conductive strips w

1978-02-28

1980-06-03

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313386, H01J 2945, H01J 3146

Patent

active

042063841

ABSTRACT:
For obtaining an improved characteristic, particularly an improved after-image characteristic of image pickup tubes, a target of the tube is produced by at first forming a striped transparent conductive film on a substrate such that the angle formed between the surface of the substrate and the edges of cross-section of the film falls within a range below 20.degree., and then forming a photoconductive film on the striped transparent conductive film. In order to control the angle formed between the surface of the substrate and the side edges of cross-section of the transparent conductive film, at first a mask of a predetermined pattern is formed on the transparent conductive film with a posi-type photosensitive material, and is subjected to an ultraviolet ray. The mask is then heat treated so that the side edges of the mask may be suitably tapered. Finally, the transparent conductive film is formed by sputter etching.

REFERENCES:
patent: 2908835 (1959-10-01), Weimer
patent: 3087985 (1963-04-01), Heijne et al.
patent: 3772552 (1973-11-01), Kubota
patent: 3984721 (1976-10-01), Sato et al.
patent: 3997810 (1976-12-01), Tsutsui et al.

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