Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Reexamination Certificate
2006-05-16
2006-05-16
Williams, Joseph (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
C313S34600R, C313S3460DC, C313S631000
Reexamination Certificate
active
07045945
ABSTRACT:
The present invention decreases invalid light emitting regions, which are generated at both ends of an outer tube and enlarges a valid light emitting region of a phosphor layer, which enlarges the light emitting region of a lighting device. In a cold cathode fluorescent tube, cup-shaped electrodes are provided on the inside of both ends of a glass tube, which has a phosphor layer on the inner surface thereof, wherein each cup-shaped electrode connects to an inner lead, which supplies an electric power. A sputter source is formed on an inner wall surface of the cup-shaped electrode by sintering white metal oxide, whereby the white metal oxide which constitutes a sputter source is sputtered by evaporation, which forms a sputter film on a portion of the opening end of the cup-shaped electrode and inner wall surface of the glass tube.
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Asai Takahiro
Omura Kazuyuki
A. Marquez, Esq. Juan Carlos
Fisher Esq. Stanley P.
Hitachi Display Devices, Ltd.
Hitachi Displays Ltd.
Reed Smith LLP
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