Electrode for cold cathode tube, and cold cathode tube and...

Details Electrode for cold cathode tube, and cold cathode tube and... Electrode for cold cathode tube, and cold cathode tube and...

2007-08-31

2011-12-06

Pak, Sung (Department: 2874)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

Reexamination Certificate

active

08072560

ABSTRACT:
An electrode (1) for cold cathode tube has a cylindrical sidewall portion (2), a bottom portion (3) provided at one end of the sidewall portion, and an opening portion (4) provided at the other end of the sidewall portion. The sidewall portion and the bottom portion are made of tungsten. The tungsten has fibrous crystalline structure extending substantially perpendicularly to a direction of thickness of the sidewall portion or the bottom portion. The thickness T of the sidewall portion or the bottom portion and an average width W of the fibrous crystalline structures in the direction of the thickness satisfy the following relational expression: 0.003≦W/T≦0.07.

REFERENCES:
patent: 7800712 (2010-09-01), Suzuki et al.
patent: 2008/0192176 (2008-08-01), Aoyama
patent: 2009/0096958 (2009-04-01), Matsuura et al.
patent: 2009/0195188 (2009-08-01), Maniwa et al.
patent: 2001-176445 (2001-06-01), None
patent: 2003-242927 (2003-08-01), None
patent: 2004-178875 (2004-06-01), None
patent: 2005-015917 (2005-01-01), None
patent: WO 2005/069349 (2005-07-01), None

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