Kabushiki Kaisha Toshiba

Hitoshi Tabata

Takeo Ito

Tsuyoshi Oyaizu

Takashi Nishimura

Satoshi Koide

Akira Mikami

Hajime Tanaka

Tomoko Nakazawa

An image display unit having a structure in which a heat-resisting fine particle layer is formed on a metal back layer disposed on a phosphor layer, and a getter layer is deposited/formed on the heat-resisting fine particle layer by vapor-depositing. The fine particle layer is desirably formed in a specified pattern, and a filmy getter layer is formed in a pattern complementary to the former pattern. The average particle size of heat-resisting fine particles which may use SiO, TiO, AlO, FeOis 5 nm to 30 &#x3bc;m. Since abnormal discharging is restricted, the destruction and deterioration of an electron emitting element and a phosphor screen are prevented to provide a high-brightness, high-grade display.

Image display unit and method for manufacturing an image display unit

Image display unit and production method therefor

A method for forming a phosphor screen comprising the step of forming a phosphor layer containing a thermoplastic resin on the inner surface of a face plate, the step of pressurizing the phosphor layer being heated to plasticate the thermoplastic resin and smooth the surface of the phosphor layer, and the step of forming a metal film on the surface-smoothed phosphor layer and heating the face plate. Thermoplastic resin having a softening temperature of 50&#x2013;350&#xb0; C. can be used in the phosphor layer, and 0.05&#x2013;50 wt % of such a thermoplastic resin in solid content ratio is contained in the layer. Heating/pressurizing conditions preferably involve temperatures of 50&#x2013;350&#xb0; C. and pressures of 10&#x2013;10000 N/cm. This method enhances the film forming property of a metal back layer and prevents cracks and pinholes in the metal back layer.

Method of forming a phosphor screen and an image display unit containing the phosphor screen

An image display device having a vacuum envelope which has a light transmissible panel, a funnel and a neck, its inside held vacuum, a phosphor layer is formed on the inside surface of the light transmissible panel, an electron gun is disposed within the neck. An antistatic film which contains high-resistance fine particles having a specific resistivity of 10to 10&#x3a9;&#xb7;cm is formed on inside wall of the neck. The image display device is free from deterioration of display characteristics caused by a change of the track of electrons emitted by the application of voltage, a spark in a tube, or a leakage current.

Dispersion for preventing electrification antistatic film and image display device

Growing community of inventors

Fukaya, Japan

Hitoshi Tabata