(19)
(11) EP 0 400 565 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.09.1991 Bulletin 1991/37

(43) Date of publication A2:
05.12.1990 Bulletin 1990/49

(21) Application number: 90110139.4

(22) Date of filing: 29.05.1990
(51) International Patent Classification (IPC)5: H01J 29/86, H01J 29/28
(84) Designated Contracting States:
DE FR

(30) Priority: 30.05.1989 JP 134673/89
23.08.1989 JP 214779/89

(71) Applicant: HITACHI, LTD.
Chiyoda-ku, Tokyo 101 (JP)

(72) Inventors:
  • Asano, Tetsuo
    Chiba-ken (JP)
  • Yamazaki, Eiichi
    Chiba-ken (JP)
  • Morita, Yasukazu
    Chiba-ken (JP)

(74) Representative: Strehl Schübel-Hopf Groening & Partner 
Maximilianstrasse 54
80538 München
80538 München (DE)


(56) References cited: : 
   
       


    (54) Projection cathode-ray tube


    (57) A projection cathode-ray tube comprises a board-shaped panel (PNL) with no skirt portion whose inner face is convex and has a given curvature. A multilayer interference film (MIF), a phosphor layer (PH), and a metal-backed layer (MBK) are formed in that order on the inner surface of the panel. A peripheral portion of the panel (PNL) is welded to a funnel (FNL) using frit glass (FRT). The panel and the funnel are electrically connected together by means of a conductive film (CC). There­fore, no brightness decreases nor color shade occurs in the panel peripheral portion, and reliable high-voltage conduction is provided between the panel (PNL) and the funnel (FNL).







    Search report