Kabushiki Kaisha Toshiba

Eiichirou Uda

Takashi Sudo

Kazuo Kobayashi

Osamu Nakamura

Katsuhisa Homma

Kiyomi Koyama

Yoshiaki Ouchi

Toshiharu Higuchi

Sadao Matsumoto

There is provided an impregnated-type cathode substrate comprising a large particle diameter low porosity region and a small particle diameter high porosity region which is provided in a side of an electron emission surface of the large particle diameter low porosity region and has an average particle diameter smaller than an average particle diameter of the large particle diameter low pore region and a porosity higher than a porosity of the large particle diameter low porosity region, the impregnated-type cathode being impregnated with an electron emission substance.

Impregnated-type cathode substrate with large particle diameter low porosity region and small particle diameter high porosity region

Impregnated type cathode assembly, cathode substrate for use in the

Growing community of inventors

Tokyo, Japan

Eiichirou Uda