Sumitomo Chemical Company, Limited

Daikin Industires, Ltd.

Yukio Yasunori

Yasuyuki Kato

Masahiko Moritani

Masahiro Yuyama

Kayoko Ueda

Satoshi Honda

Shinsuke Ochiai

Toshiki Doi

Yuji Tanaka

Masaru Honda

Takanori Fujita

Masanori Moriwaki

Haruyoshi Sannou

Hakaru Miyakita

Hitoharu Hachisuka

Hisao Shimanoe

Akira Matsumoto

Yoshimi Nakagawa

A front panel for a plasma display panel having at least one transparent resin plate and a conductive mesh placed on the transparent resin plate, in which a part of the conductive mesh is exposed on the plate in a sheet form on at least one side of the marginal surface of the front panel. The front panel may have uneven patterns on at least one side of the surfaces of the front panel, and may also include an intermediate synthetic resin plate between the conductive mesh and the transparent resin plate, as well as a decorative portion between the intermediate synthetic resin plate and the transparent resin plate. In addition, the front panel may contain a conductive film, which is in contact with the conductive mesh in a sheet form on at least one side of the marginal surface of the front panel.

Front panel board for plasma display

A front panel for a plasma display comprising a transparent substrate and two or more electroconductive films, each electroconductive film comprising a transparent polymer film with a transparent electroconductive layer on at least one surface thereof, can effectively shield an electromagnetic wave and can be produced in a simple process.

Front panel for plasma display

The present invention provides a plasma display front panel comprising a transparent substrate which is produced by molding a resinous composition containing the following components (a) to (c), and has a 50% or more transmittance of light with a wavelength in the range of 450 nm to 650 nm, and a 30% or less transmittance of light with a wavelength in the range of 800 nm to 1000 nm;

Plasma display front panel

Surface coating composition, cured film thereof and synthetic resin

An optical filter for a liquid crystal display device, consisting of a polymer film which has two types of layers having different refractive index which exist alternately in a laminated state, in which a difference of refractive index between two types of layers is in the range between 0.01 and 0.1, an average thickness of each layer is at least 0.8 .mu.m and less than 2 .mu.m, and a thickness of the polymer film is in the range between 10 to 300 .mu.m, which filter can widen an angle of view of the liquid crystal display is greatly without the improvement of the liquid crystal cell, change of an addressing system or modification of the liquid crystal itself.

Light control sheet and liquid crystal display device comprising the same

An antireflection filter comprising a film- or sheet-form transparent substrate, an antireflection coating on at least one surface of the substrate, which coating contains an inorganic compound, and a stain proofing layer on the antireflection coating, which layer contains a specific silane compound having an average molecular weight of 5.times.10.sup.2 to 1.times.10.sup.5.

Antireflection filter

An unsaturated compound having a vinyl or vinylidene group is rapidly in-mold polymerized by mixing the unsaturated compound containing a polymerization initiator and the unsaturated compound containing a polymerization accelerator, pouring the mixture into a mold cavity and polymerizing the monomer for not longer than 30 minutes.

Method for in-mold polymerization of unsaturated compound

Improved method for the production of a polymer of a monofunctional (unsaturated) monomer, particularly polymethyl methacrylate, by a rapid crosslinking polymerization, which comprises polymerizing a mixture of a monofunctional (unsaturated) monomers, selected from methyl methacrylate and a monomer mixture comprising predominantly methyl methacrylate which may partially contain a polymer of the monomer (i.e. a syrup of the monomer or monomer mixture), and a polyfunctional (unsaturated) monomer in the presence of (1) a radical polymerization initiator, (2) a reducing compound containing sulfur in the molecule thereof, (3) an amine hydrohalogenate or a quaternary ammonium halide and (4) a copper-containing compound. Said polymer has high mechanical properties and excellent transparency and is useful particularly for the production of optical parts such as conventional lenses, Fresnel's lens, optical recording disc media, prisms, mirrors, etc.

Method for the production of polymethyl methacrylate

Improved method for the production of polymethacrylates by a rapid polymerization, which comprises polymerizing an unsaturated monomer selected from a methacrylate and a monomer mixture comprising predominantly a methacrylate which may partially contain a polymer of the monomer (i.e. a syrup of the monomer or monomer mixture) in the presence of a radical polymerization initiator, a reducing compound containing sulfur in the molecule thereof, a copper-containing compound and a specific tertiary amine hydrohalogenate or a quaternary ammonium halide. Said polymethacrylates can give molded products having excellent mold release characteristics and are useful particularly for the production of optical parts such as conventional lenses, Fresnel's lens, optical recording disc media, prisms, mirrors, etc.

Method for the production of polymethacrylates

An anti-reflection plate for a display device, including a transparent substrate wherein, on one or both surfaces of the substrate, a flat first layer consisting of a transparent hardening agent containing a silicon-containing organic compound has been applied and dried and, on the first layer, a second layer consisting of a transparent hardening agent containing a silicon-containing compound has been spray coated and hardened to form an uneven surface having projections each having a height of 0.1 to 2.0 .mu.m in height, a diameter of 10 to 100 .mu.m and a height/diameter ratio of 1/30 to 1/500 can effectively prevent reflection of external light on a screen of a display device without deteriorating the resolution of an image on the screen.

Anti-reflection plate for display device

A plastic molded article excellent in transparency, antistatic property and abrasion resistance is produced by providing on the surface of a base material comprising a transparent plastic molded article an electrically conductive coat layer comprising 60-80% by weight of an electrically conductive powder mainly composed of tin oxide and 20-40% by weight of a resin component and further providing thereon a topcoat layer comprising 0-50% by weight of an electrically conductive powder mainly composed of tin oxide and 50-100% by weight of a resin component.

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Osaka, Japan

Yukio Yasunori