Title:
ELECTRODE MEMBER FOR COLD CATHODE FLUORESCENT LAMP
Document Type and Number:
WIPO Patent Application WO/2008/062563
Kind Code:
A1
Abstract:
Disclosed is an electrode member for cold cathode fluorescent lamps, which is
excellent in sputtering resistance, discharge properties and productivity.
Also disclosed are a method for producing an electrode member, and a cold cathode
fluorescent lamp. Specifically disclosed is a fluorescent lamp (1) comprising
a glass tube (20) and an electrode member (10) arranged within the tube (20). The
electrode member (10) comprises an electrode main body portion (11) having a
bottomed tubular shape and a lead portion (12) arranged at a sealing portion of
the glass tube (20), and the portions (11, 12) are formed integrally. The electrode
member (10)contains one or more elements selected from the group consisting
of Ti, Hf, Zr, V, Nb, Mo, W, Sr, Ba, B, Th, Al, Y, Mg, In, Ca, Sc, Ga, Ge, Ag, Rh, Ta and
rare earth elements (excluding Y and Sc) in an amount of 0.01-5.0% by mass in total,
and the balance of the electrode member (10) is composed of an Fe-Ni alloy and impurities.
Since the alloy constituting the electrode member (10) is mainly composed of
an Fe-Ni alloy, the electrode member (10) has a thermal expansion coefficient
close to those of glasses, thereby having excellent plastic formability. In
addition, since the alloy constituting the electrode member (10) contains specific
additional elements, the electrode member (10) is excellent in sputtering resistance
and discharge properties.
Inventors:
NAKAI YOSHIHIRO (JP)
YAMAZAKI KAZUO (JP)
YAMAZAKI KAZUO (JP)
Application Number:
PCT/JP2007/001289
Publication Date:
May 29, 2008
Filing Date:
November 22, 2007
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMIDEN FINE CONDUCTORS CO LTD (JP)
NAKAI YOSHIHIRO (JP)
YAMAZAKI KAZUO (JP)
SUMIDEN FINE CONDUCTORS CO LTD (JP)
NAKAI YOSHIHIRO (JP)
YAMAZAKI KAZUO (JP)
International Classes:
H01J9/02; H01J61/067; H01J61/36
Foreign References:
| JP2006228615A | 2006-08-31 | |||
| JP2004235073A | 2004-08-19 | |||
| JP2002289137A | 2002-10-04 | |||
| JP2005116279A | 2005-04-28 | |||
| JP2007031832A | 2007-02-08 | |||
| JP2008050690A | 2008-03-06 |
Attorney, Agent or Firm:
YAMANO, Hiroshi (10F ASTRO Shin Osaka,2 Bldg., 1-3, Nishinakajima 6-chome,Yodogawa-ku, Osaka-sh, Osaka 11, JP)
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