Electric lamp and discharge devices – Cathode ray tube – Beam deflecting means
Patent
1995-03-28
1996-03-05
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Beam deflecting means
313495, H01J 2920, H01J 2972
Patent
active
054970466
ABSTRACT:
A picture display device having a vacuum envelope whose inner wall is provided with a luminescent screen. The device is a plurality has a of juxtaposed sources for producing electrons, local transport ducts having walls of electrically substantially insulating material having a secondary emission coefficient which is suitable for transporting, through a vacuum, electron beams, preselection means for withdrawing electrons from the transport ducts at predetermined extraction locations and for directing them towards the luminescent screen for producing a picture composed of pixels. A structure of distribution ducts having selection apertures is positioned between the transport ducts and the luminescent screen for fine selection of electrons withdrawn from the transport ducts.
REFERENCES:
patent: 4069439 (1978-01-01), Anderson
patent: 4757230 (1988-07-01), Washington et al.
patent: 4879496 (1989-11-01), Knapp et al.
patent: 4927218 (1990-05-01), Zegers
De Zwart Siebe T.
Lambert Nicolaas
Trompenaars Petrus H. F.
Van Gorkom Gerardus G. P.
Kraus Robert J.
O'Shea Sandra L.
Patel Ashok
U.S. Philips Corporation
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