Kasei Optonix, Ltd.

Morio Hayakawa

Takashi Hase

Norio Miura

Noboru Kotera

Hideo Suzuki

Hidemi Yoshida

Hitoshi Sakamoto

Phosphorescent phosphor

A monochrome display cathode ray tube which comprises a white emitting fluorescent screen formed on a face plate facing an electron gun to emit cathode rays, said white emitting fluorescent screen being composed essentially of a phosphor mixture comprising from 40 to 70% by weight of a long after-glow red emitting europium-activated indium borate phosphor, from 10 to 40% by weight of a long after-glow green emitting manganese-activated zinc silicate phosphor and from 10 to 50% by weight of a long after-glow blue emitting silver-activated zinc sulfide phosphor.

Monochrome display cathode ray tube with long after glow phosphors

Growing community of inventors

Kanagawa, Japan

Morio Hayakawa