Hitachi, Ltd.

Other

Hitachi Device Engineering Co., Ltd.

Hitachi Displays, Ltd.

Panasonic Liquid Crystal Display Co., Ltd.

Toshio Tojo

Norikazu Uchiyama

Masahiro Nishizawa

Maki Taniguchi

Kiyoshi Miura

Tomoji Oishi

Daigoro Kamoto

Ken Takahashi

Takao Ishikawa

Shigemi Hirasawa

Hiroshi Yoshioka

Nobuhiko Hosotani

Hisashi Nose

Hidetsugu Matsukiyo

Yoshiyuki Odaka

Tomoji Ohishi

Toshio Uyama

Maki Ito

Nobuyasu Hayashi

Zenjiro Kanzaki

Toshikazu Igarashi

A method for manufacturing a display device includes the step of forming a preset basic pattern in a plurality of places on an insulation substrate by exposing and developing a photosensitive material film which is formed on the insulation substrate, wherein the exposure is performed using a direct writing exposure device. The exposure is performed using the direct writing exposure device in which the light quantity distribution of the pattern of light formed by the spatial optical modulating element is corrected such that a fluctuation quantity of a size of the basic pattern formed in the plurality of places becomes not more than 0.2 &#x3bc;m.

Method for manufacturing display device and liquid crystal display device

The present invention enhances the quality of displayed images by enhancing the uniformity of the total transmissivity over the whole surface of a panel having a wavelength selective absorption layer imparted with gradation thus reducing the color difference of the body color. A transmissivity ratio between a peripheral portion and a central portion of a panel formed of tinted glass which differs in wall thickness between the peripheral portion and the central portion of a screen before the surface treatment is set to a value not greater than 60%, and the body color of the panel is set such that

Color cathode ray tube

A high definition display apparatus having a wavelength selective absorption effect and an anti-static and anti-reflection effect is provided by thin films having a low resistance and a high refractive index. The high definition display apparatus has an anti-static and anti-reflection film composed of laminated oxide or metallic thin films, wherein at least three layers of oxide or metallic films having different reflectance from each other are laminated onto the front surf ace of the display apparatus, and the laminated films are composed such that an absorbing film containing coloring material is arranged under a high reflectance film as seen from the outer surface of the laminated films.

Display apparatus with a multi-layer absorption, conduction and protection film

A cathode ray tube includes a film which is formed on an outer surface of a panel portion. The film is comprised of a first particles which become transparent due to the oxidation and a second particles which are chemically and physically stable and have the light absorbing ability and the conductivity. A number of the transparent first particles is gradually increased toward a peripheral portion from the center portion of the panel portion.

Color cathode ray tube and method of manufacturing thereof

Cathode ray tube having a pigment on a panel front face

A color cathode ray tube of the present invention includes an evacuated envelop that is structured from a panel having a phosphor screen on its inner surface, a neck portion containing therein an electron gun assembly, and a cone-shaped section called the funnel for integrally coupling the panel and the neck together, wherein when the main scanning direction of a display screen formed of the panel is defined as an X direction whereas a direction at right angles to the main scan direction is as a Y-direction, an equivalent radius of curvature R of an outer surface of the panel in the X direction is at least 2.6 times greater than an equivalent curvature radius R of the inner surface while forming on the inner panel surface an inside light absorption layer that is comprised of pigments as its principal component.

Flat face type color cathode ray tube having panel with curved inner surface

A panel has a flat external surface and has a curvature on an inner surface thereof. A coating having light absorption characteristics is formed on the external surface of the panel. To the top of the coating, a film which has light absorbing characteristics and contains an adhesive is adhered. The light absorption by the coating is large at the central portion of the panel and is small at the peripheral portion of the panel. The light absorption characteristics of the film is approximately uniform on the entire surface of the panel. Due to such a constitution, a color picture tube having a flat external surface, the least brightness difference and an excellent contrast can be realized.

Color picture tube

In a color cathode ray tube having a vacuum vessel that comprises a panel, a neck for housing an electron gun therein, and a funnel for connecting the panel and the neck, in which the inner surface of the panel glass is coated with a phosphor layer in different colors to give a display screen; the panel glass contains ions capable of selectively absorbing light within the range of visible rays, and its outer surface is coated with an electric conductive surface film.

Color cathode ray tube with panel glass having a different light absorption characteristic from that of at least one outer surface layer provided thereon

A cathode ray tube with a vacuum enclosure, including a glass panel having an inner face coated with a phosphor film to form a screen, a neck portion housing an electron gun, and a funnel portion connecting the glass panel and the neck portion. A high refractive index film made of electrically conductive metal oxide or metal (e.g., precious metal) particles and having a refractive index of 1.6 to 2.2, and a low refractive index film having a refractive index of 1.3 to 1.58, are formed on the outer face of the glass panel. The high refractive index film is sandwiched between the outer face of the glass panel and the low refractive index film and an average roughness of an outer surface of said low refractive index film is less than an average roughness of an unevenness of an interface between the high refractive index film and the low refractive index film.

Cathode ray tube having high and low refractive index films on the outer face of the glass panel thereof

There is provided a field leak preventing coating film of a cahtode ray tube, comprising a vacuum case comprising the panel section, a neck section and a funnel section connecting the panel section and the neck section; a fluorescent film applied on an inner face of the panel section; and an electron gun, stored in the neck section, for emitting three electron beams toward the fluorescent film, by adhering a double coating film composed of a conductive first layer mainly composed of particles of one or more kinds of metal among noble metal elements of gold (Au), silver (Ag) or platinum (Pt) and a second layer mainly composed of silicon dioxide (SiO ) or magnesium fluoride (MgF ) on an outer face of a faceplate of a panel section of the color cathode ray tube.

Color cathode ray tube equipped with field leak preventing coating

There is provided a field leakage preventing coating for a cathode ray tube, including a vacuum envelope having a panel section, a neck section and a funnel section connecting the panel section and the neck section; a fluorescent film applied on an inner face of the panel section; and an electron gun, mounted in the neck section, for emitting three electron beams toward the fluorescent film. The field leakage preventing coating is formed by adhering a double coating film composed of a conductive first layer mainly composed of particles of one or more kinds of metal among noble metal elements of gold (Au), silver (Ag) and platinum (Pt) and a second layer mainly composed of silicon dioxide (SiO,) or magnesium fluoride (MgF,) on an outer face of a faceplate of a panel section of the color cathode ray tube.

Cathode ray tube having high and low refractive index films on the outer

A cathode ray tube comprising a vacuum enclosure including a glass panel 1 whose inner face is coated with a phosphor film 4 to form a screen; a neck portion housing an electron gun; and a funnel portion connecting the glass panel and the neck portion. A multi-layered anti-reflection, anti-electrostatic charge film formed on the outer face of the glass panel is constructed of a high refractive index film having a refractive index of 1.6 to 2.2 and a low refractive index film having a refractive index of 1.3 to 1.58. The high refractive index film is sandwiched between the outer face of the glass panel and the low refractive index film, and an unevenness having an average diameter of 5 to 80 .mu.m is provided at the interface between the high refractive index film and the low refractive index film. The interface has a height of 10 to 40 nm. The unevenness of the surface of the low refractive index film is made smaller than the average roughness Rz of the unevenness of the interface between the high refractive index film and the low refractive index film, or the surface of the low refractive index film is flat.

Cathode ray tube with multilayered high- and low-refractive index films

In a cathode ray tube having an antistatic film 6 stuck to the front surface of a panel section 1 and a conductive tape 7 for grounding the end portion of the antistatic film 6 to the earth, a silicone adhesive 8 containing a conductive filler having an excellent close contact adhesion to silicon dioxide (SiO.sub.2) is interposed in at least a part of an close contact adhesion portion where the conductive tape 7 is stuck to the antistatic film 6. Thanks to the interposition of the conductive filler containing silicone adhesive 8, the resistances between the antistatic film 6 and the conductive tape 7 and between the silicone adhesive 8 and the conductive tape 7 can be lowered and sputtering which may be caused by the high voltage induced in the antistatic film 6 is prevented, so that the breakage of the antistatic film 6 can be prevented at the close contact adhesion portion.

Cathode ray tube with conductive silicon adhesive

A cathode ray tube subjected to an antistatic treatment and a method of making the same. A conductive surface of a panel of a bulb body is grounded through a metal reinforcement serving as a reinforcement for maintaining the bulb's inward bursting resisting properties to instantaneously leaking any electrified charge, thereby providing the antistatic cathode ray tube which is free from the effect of air-conditioned humidities. Thus, there is the effect of preventing the occurrence of erroneous operations of the cathode ray tube and peripheral units and adverse effects on the human body, e.g., electric shock due to the charged static electricity on the panel surface, and there is another effect that the implosion protective adhesive glass tape or the member interposed between the conductive coating and the metal reinforcement is equivalent to lead wires thus eliminating the use of lead wires and thereby eliminating the provisions of complicated connections to the panel surface.

Growing community of inventors

Ichinomiya, Japan

Toshio Tojo