Sumitomo Bakelite Company Limited

Sumitomo Chemical Company, Limited

Dai Nippon Printing Co., Ltd.

Kuraray Co., Ltd.

Toppan Printing Co., Ltd.

Jsr Corporation

Konica-minolta Holdings, Inc.

Dainippon Ink and Chemicals, Incorporated

Sony Corporation

Nec Corporation

Toray Industries, Inc.

Hitachi Chemical Company, Ltd.

Shigenori Yamaoka

Ken Sumiyoshi

Kazushige Takechi

Noboru Oshima

Akimitsu Tsukuda

Ichiro Fujieda

Yoshiyuki Ono

Atsushi Kumano

Motoyuki Suzuki

Katsuya Fujisawa

Hisatomo Yonehara

Toshimasa Eguchi

Yoshiki Matsuoka

Kazuo Genda

Tokuo Ikari

Tatsumi Takahashi

Norimasa Sekine

Yasuo Tsuruoka

Tsutomu Watanabe

Hideo Suyama

Masana Ugaji

Sadaaki Sakurai

Toshinaga Endo

Akinobu Kusuhara

Masuo Mizuno

Yukihiro Okabe

Koichi Tanaka

Mitsutaka Waki

Kenmatsu Isozaki

Kyotaro Nishi

A conventional liquid crystal display comprises a number of components, so that a manufacturing cost cannot be reduced. Furthermore, a large-area substrate has problems in shipping. According to this invention, a liquid-crystal panel is prepared by forming individual optically functional films, a TFT device and a light-emitting device on a long thin film and then laminating the film by a transfer process. A base film to be a substrate in a liquid-crystal panel preferably has a thickness of 10 &#x3bc;m to 200 &#x3bc;m, a curvature radius of 40 mm or less as a measure of flexibility and a coefficient of thermal expansion of 50 ppm/&#xb0; C. or less. Furthermore, it more preferably gives a variation of &#xb1;5% or less in mechanical and optical properties to a thermal history at 200&#xb0; C.

Light-condensing film, liquid-crystal panel and backlight as well as manufacturing process for light-condensing film

Polyimide-type-resin-etching rate can remarkably be enhanced by combining tetramethylammonium hydroxide or an aqueous solution of tetramethylammonium hydroxide with at least one member selected from the group consisting of amide compounds represented by the following formula: ##STR1## and amide compounds represented by the following formula: ##STR2## and amine compounds represented by the following formula:

Etching agent for polyimide type resins and process for etching

An electro-acoustic transducer, such as a loudspeaker, a microphone, or the like, comprises a magnetic circuit having at least one air gap, a current conductor disposed in the air gap of the magnetic circuit to form a voice coil which is traversed by magnetic flux, and a vibratory structure mechanically coupled to the voice coil. The vibratory structure is comprised of a heat resistant film containing an epoxide-modified resin in which a heterocyclic compound containing a polyimide group is the main component. The voice coil is non-adhesively secured to the vibratory structure. For example, the voice coil is formed of a conductive substrate onto which the vibratory structure is coated and from which portions have been etched to form a generally spiral-shaped conductor. In one embodiment, the vibratory structure is a diaphragm; and in another embodiment, the vibratory structure is a bobbin having the voice coil wound thereon.

Electro-acoustic transducer

As an adhesive used for a laminate for a flexible printed circuit, there is provided an adhesive composition comprising as the essential components a polyester resin, an isocyanate compound, and a B-stage epoxy resin. This composition is excellent in flow property and rapid curability and is suitable for use in a continuous adhesion between a plastic insulating film and a conductive foil by means of a roll-laminator and it affords an excellent characteristic to the laminate a printed circuit. There is also provided an adhesive composition which contains, in addition to the above ingredients, a styrene copolymer comprising maleic anhydride, or an alkyl maleate as a structural unit, or a metallic salt of an aliphatic carboxylic acid in order to prevent blocking and promote curing of the adhesive in a roll laminating process. The addition of a small amount of a pigment results in an adhesive composition which is effective in the economical production of a laminate for a colored flexible printed circuit, and which has the effect of preventing the blocking and improving the weather resistance of the adhesive.

Adhesive composition for flexible printed circuit and method for using

Growing community of inventors

Tokyo, Japan

Shigenori Yamaoka