Kabushiki Kaisha Toshiba

Fuji Pigment Co., Ltd.

Nikka Techno, Inc.

Masaaki Inamura

Takeo Ito

Hajime Tanaka

Kazuo Sakai

Tomoko Nakazawa

Keisuke Iida

Koji Washiyama

Taichiro Nakayama

Yoichiro Nakayama

Takaaki Shinohara

A metal back-attached phosphor screen comprises a metal back layer that has a high-reflectance, high-resistance layer consisting of an In-, Sn- or Bi-oxide layer. The metal back layer of the metal back-attached phosphor screen may have a laminate structure including a high-reflectance layer formed on a phosphor layer side and a high-resistance layer formed on that layer. The high-reflectance layer may be formed of Al, In, Sn or Bi. The high-resistance layer may be formed of an Al-, In-, Sn-, Bi- or Si-oxide or nitride. A high-brightness metal back-attached phosphor screen is provided that prevents the destruction or the deterioration of an electron emission element and a phosphor screen by discharging.

Metal back-carrying fluorescent surface, metal back forming transfer film and image display unit

A color cathode ray tube includes a transparent panel, a funnel joined airtightly to a circumference portion of a sidewall of the panel, a light absorption layer (black layer) and an optical filter layer both disposed on an interior surface of the transparent panel, and a phosphor layer formed thereon. A length from an edge of the panel joined to the funnel to a circumference edge of the light absorption layer formed on an interior surface of the sidewall of the panel is longer than or equal with that from the edge of the panel to a circumference edge of the optical filter layer formed similarly on an interior surface of the sidewall of the panel. The color cathode ray tube can be manufactured by making a length from an edge of the panel to a scraping edge of the light absorption layer in the trimming step of the light absorption layer longer than or equal with that from the edge of the panel to a scraping edge of the filter layer in the trimming step of the filter layer. Thus, black fragments occurring in trimming the optical filter layer can be prevented from adhering and remaining on the interior surface of the panel. Thereby, color cathode ray tubes without display defects can be realized.

Color CRT and production method therefor

Growing community of inventors

Fukaya, Japan

Masaaki Inamura