| US 7,528,535 B2 | ||
| Cold cathode, cold cathode discharge lamp, and method for producing the same | ||
| Tomio Ono, Kanagawa (Japan); Tadashi Sakai, Kanagawa (Japan); Naoshi Sakuma, Kanagawa (Japan); Mariko Suzuki, Kanagawa (Japan); and Hiroaki Yoshida, Kanagawa (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Mar. 10, 2005, as Appl. No. 11/75,883. | ||
| Claims priority of application No. 2004-107595 (JP), filed on Mar. 31, 2004. | ||
| Prior Publication US 2005/0218773 A1, Oct. 06, 2005 | ||
| Int. Cl. H01J 1/62 (2006.01) | ||
| U.S. Cl. 313—491 [313/632; 313/633] | 9 Claims |
| 6. A cold cathode comprising:
a supporting body that has conductivity;
an insulating diamond film formed on the supporting body, the insulating diamond film having an exposed surface to be exposed
to a discharge gas; and
an insulating layer that is not a diamond film, and insulates electrically the supporting body from the exposed surface of
the insulating diamond film.
|