Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Reexamination Certificate
2006-05-08
2009-06-23
Ton, Toan (Department: 2889)
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
C313S485000, C313S607000, C313S234000
Reexamination Certificate
active
07550911
ABSTRACT:
A backlight unit has an external electrode fluorescent lamp in an housing. The external electrode fluorescent lamp includes a glass bulb having a discharge space inside, and electrodes around both ends of the glass bulb. A protective layer and a phosphor layer are formed on an internal surface of the glass bulb in this order. The glass bulb is made of soda glass, and sodium oxide precipitated from this soda glass appears on part of the internal surface of the glass bulb where the protective layer is not formed, so as to be exposed to the discharge space.
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Arata Hiroyuki
Habuta Yuko
Kawasaki Mitsuharu
Matsuo Kazuhiro
Matsuura Tomokazu
Hanley Britt
Panasonic Corporation
Ton Toan
LandOfFree
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