Electric lamp and discharge devices – Cathode ray tube – Envelope
Reexamination Certificate
2008-01-01
2008-01-01
Santiago, Mariceli (Department: 2879)
Electric lamp and discharge devices
Cathode ray tube
Envelope
C313S47700R, C313S461000, C313S467000, C313S469000, C313S110000, C313S485000
Reexamination Certificate
active
11057821
ABSTRACT:
A display apparatus includes a face plate that constitutes a part of a vacuum envelope, a phosphor layer formed on an inner surface of the face plate, and an electron beam source that emits electron beams to the phosphor layer. The face plate includes a light-emitting glass layer containing a light-emitting substance that emits light when electron beams are projected thereon. By extracting energy of electron beams, which have reached the face plate, as light, it is possible to reduce browning that occurs in the face plate and improve brightness of a display image significantly.
REFERENCES:
patent: 3634711 (1972-01-01), Barber et al.
patent: 4134851 (1979-01-01), Klein et al.
patent: 4405881 (1983-09-01), Kobayashi
patent: 4581561 (1986-04-01), Palac
patent: 2004/0212302 (2004-10-01), Letz et al.
Matsukiyo Hidetsuga
Nishikawa Masaki
Hitachi Displays Ltd.
Milbank Tweed Hadley & McCloy LLP
Santiago Mariceli
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