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US 4,543,510 AGranted
Liquid cooled cathode ray tube with reduced internal reflectance
AssigneeSony Corporation
InventorsTomosuke Chiba, Hiroshi Kato, Takashi Suganuma
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Abstract
A cathode ray tube apparatus including an envelope having a panel portion with a phosphor screen formed on the inner surface thereof, a neck portion provided with an electron gun therein and a funnel portion therebetween; and a transparent panel facing the external surface of the panel portion with a peripherally located spacer therebetween, wherein a liquid coolant is sealed in the space formed between the panel portion and the transparent panel by light absorbing material, and the spacer is treated to reduce reflection.
Claims5
A cathode ray tube apparatus comprising:
- (a) an envelope having a panel portion with a phosphor screen formed on the inner surface thereof, a neck portion provided with an electron gun therein, and a funnel portion therebetween;
- (b) a transparent panel facing an external surface of said panel portion with a spacer therebetween confined at the peripheral edges thereof;
- and
- (c) a liquid coolant between said panel portion and said transparent panel, sealed therein at the peripheral edges with a blackened light absorbing sealing material, the compression of said panel portion and said transparent panel causing the sealing material to envelop said spacer a sufficient amount to significantly reduce light reflected back into the interior of said tube.
1 more element
Dependencies are inferred from the claim text.