Title: Method for manufacturing fluorescent screens for use in colour picture tubes

Abstract: A fluorescent screen including a plurality of parallel stripes of three colour phosphors is prepared by projecting light from a linear light source positioned in parallel with the stripes on photosensitive substances coated on the inner surface of the panel through a plurality of stripe shaped perforations of a colour selecting member, each divided into a plurality of slit shaped sections by means of bridges. The linear light source is constituted by reciprocating a point light source in parallel with the stripe shaped perforations.

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Inventors: Takami, Yasuji (Mobara, JA)
Fukuda, Kenji (Mobara, JA)
Yamazaki, Eiichi (Ichihara, JA)

Application Number: 330233
Filing Date: 1973-02-07
Publication_date: 1976-02-03
Assignee: Hitachi, Ltd. (Tokyo, JA)
Primary Class(es): 430/24 313/474, 427/68, 430/26
Other Classes:
US Patent Ref:

3367790	Feb, 1968	Saulnier	117/33.
3440080	Apr, 1969	Tamura et al.	313/92.
3598628	Aug, 1971	Goodman	117/33.
3652895	Mar, 1972	Tsuneta et al.	96/36.
3653900	Apr, 1972	Black	96/36.
3666462	May, 1972	Kaplan	96/36.
3725106	Apr, 1973	Hosokoshi	117/33.
3764366	Oct, 1973	Ninagawa et al.	117/33.
3779760	Dec, 1973	Miyaoka	117/33.

Other Refs:
Primary Examiner: Gwinnell, Harry J.
Assistant Examiner:
Attorney: Pfund, Esq.; Charles E.