Kasei Optonix, Ltd.

Hideo Tono

Tomohiro Miyazaki

Kazuhito Iwasaki

Masaru Naito

Susumu Omatoi

Ryuji Adachi

Youji Tukihashi

Color picture tube with the fluorescent film of the red emission

A rare earth oxysulfide phosphor of the formula (Ln.sub.1-x-y La.sub.x Ln'.sub.y).sub.2 O.sub.2 S wherein Ln is at least one element selected from the group consisting of Y, Gd, Sc and Lu, Ln' is at least one element selected from the group consisting of Eu, Tb, Sm, Er, Tm, Dy, Ho, Nd and Pr, and x and y are numbers within ranges of 0.005&lt;x.ltoreq.0.07 and 0.0001.ltoreq.y.ltoreq.0.2, respectively.

Rare earth oxysulfide phosphor and high resolution cathode ray tube

A color cathode-ray tube having a fluorescent screen of red-, blue- and green-emitting phosphors as image elements of a fluorescent layer, wherein at least one of said phosphors is coated with a double oxide of zinc and aluminum.

Method for producing surface treated phosphor particles

Color cathode-ray tube, and surface-treated phosphor and method for its

Method for preparing rare earth oxysulfide phosphor

A phosphor comprising phosphor particles and a surface treating material attached or coated on the phosphor particles, wherein said surface treating material comprises zinc and a polycarboxylic acid.

Phosphors, method for treating the surface thereof and process for

A method for treating a phosphor, which comprises treating a phosphor with an aqueous reagent solution comprising a chelating agent, an oxidizing agent and an alkali agent.

Method for treating a phosphor

A phosphor comprising a phosphor and zinc oxide formed in a suspension of the phosphor and attached to the surface of the phosphor.

Growing community of inventors

Odawara, Japan

Hideo Tono