Idemitsu Kosan Company, Limited

Kimihiro Yuasa

Kenji Hashimoto

Kazuharu Morita

Satoshi Hachiya

Tetsuo Fujimoto

Shunji Uchida

Motohisa Ido

Ryusuke Watanabe

Chishio Hosokawa

Kenichi Fukuoka

Hitoshi Kuma

Hirofumi Kondo

Keiko Yamamichi

Takeki Kofuji

Kento Okoshi

Hironobu Ichige

An organic electroluminescent display () including: a substrate (); and a first organic electroluminescent device part () and a second organic electroluminescent device part () placed side by side on a surface of the substrate; the first organic electroluminescent device part () including at least a light reflective conductive layer (), an organic luminescent medium layer (), and a transparent electrode layer () in this order and including a light reflective layer () inside or outside of the organic luminescent medium layer () or the transparent electrode layer (); the second organic electroluminescent device part () including at least a light reflective conductive layer (), a first inorganic compound layer (), an organic luminescent medium layer (), and a transparent electrode layer () in this order and including a light reflective layer () inside or outside of the organic luminescent medium layer () or the transparent electrode layer (); and an emission spectrum of light from the first organic electroluminescent device part () differing from an emission spectrum of light from the second organic electroluminescent device part ().

Organic electroluminescence display device

A three-dimensional display is provided with a display device alternatively displaying an image for the right eye and an image for the left eye in division of the images at predetermined time periods. A liquid crystal shutter disposed in front of the display device is operated in synchronization with image switching of the display device, and the image transmitted through the liquid crystal shutter is observed as a three-dimensional image through polarized glasses of which polarizing directions differ in the right and left from each other. The liquid crystal cell which serves as a liquid crystal shutter has a structure of a ferroelectric liquid crystal held between two sheets of resin film substrates and the ferroelectric liquid crystal contains more than 10 wt % of ferroelectric liquid crystal polymer so that it can respond to a large size display device and a high speed motion. A retardation plate to compensate elliptical polarization of the polarized glasses prevents lowering of contrast of the display due to the elliptical polarization peculiar to the operation mode of the liquid crystal cell and reduces a double reflection of the image, by setting the condition of &verbar;&Dgr;n,d,&minus;&Dgr;n,d,&verbar;&lE;50 nm in the range of light wavelength from 400 nm through 900 nm, for the retardation (&Dgr;n,d,) of the retardation plate and a retardation (&Dgr;n,d,) of a liquid crystal cell forming the liquid crystal shutter.

Three dimensional display

A liquid crystal composition comprising 5 to 99 % by weight of a liquid-crystalline copolymer, which has both an alkyl chain and a siloxane chain in its main chain, and 1 to 95 % by weight of a low molecular weight liquid-crystalline compound operates at a wide range of temperatures including room temperature, has an excellent film formability, is easy to orient to a high degree by mechanical orientation methods including bending orientation method and responds to the change of electric field at a high speed.

Liquid crystal composition and information display apparatus using the

A ferroelectric liquid crystal composition comprising (A) a ferroelectric liquid crystal material and (B) a non-liquid-crystalline polymeric material;

Ferroelectric liquid crystal composition, liquid crystal optical device

A substrate coated with a film of liquid crystal material having a uniform thickness is produced efficiently by applying the liquid crystal material to the electrode side of a substrate using an impregnating matter impregnated with the liquid crystal material, and such a method ensures uniform thickness even for a film of liquid crystal material having a large area. A liquid crystal optical device having a uniform optical quality and a large area is produced efficiently by coating a flexible substrate with a film of liquid crystal material using the method described above, laminating the coated flexible substrate with another flexible substrate, with the film of the liquid crystal material disposed between the electrode sides of the flexible substrates, and orienting the liquid crystal material in thus obtained laminate by subjecting the laminate to bending treatment.

Apparatus for producing a liquid crystal optical device

A uniform orientation can be brought about to the liquid crystal material enclosed in a liquid crystal device by applying a shearing force to the liquid crystal material while an electric field is being applied to the liquid crystal material, without requiring disposition of orientation layers nor accurate control of temperature. The orientation method can be efficiently conducted by an apparatus comprising a supply roll for supplying and conveying the liquid crystal device, a roller having conductive orientation rolls for bending the conveyed liquid crystal device and for applying an electric field to the liquid crystal material, a power source for applying a voltage to the conductive orientation roll, and a receiving means for receiving the liquid crystal device which has gone through the bending.

Apparatus for orienting a liquid crystal material using a shear force

A method of forming a pattern in a conductive film of the group consisting of indium oxide film, indium tin oxide film, and aluminum film, covering a surface of a substrate of glass or a plastic material. This is accomplished by contacting a metal electrode with the surface of the substrate, and moving the area where the electrode contacts the conductive film at a speed of 5 to 1000 mm/sec while a voltage of 5 to 60 volts is applied between the electrode and the film.

Method of forming electrode pattern

Method of producing a substrate coated with a film of liquid crystal

Method of orienting a liquid crystal material, apparatus therefor, and

A method of orienting a liquid crystal optical device including

Method of orienting liquid crystal optical device

The liquid-crystalline polymeric composition of the invention comprises (A) a non-liquid-crystalline polymeric compound and (B) a low-molecular liquid-crystalline compound each having a proton donor and/or a proton acceptor in the molecular structure and the low-molecular compound has a chiral smectic C phase. By virtue of these functional groups forming hydrogen bonds between the components, the liquid-crystalline polymeric composition of the invention is not a mere blend of the components liable to cause phase separation but is imparted with greatly increased stability and uniformity of the blend as well as responsivity of high speed.

Ferroelectric liquid-crystalline polymeric composition

A process for producing a liquid crystal optical device comprising a ferroelectric liquid-crystalline polymer and two flexible substrates sandwiching the ferroelectric liquid-crystalline polymer between them, which process comprises the following continuously conducted stages of:

Process for producing liquid crystal optical device

A liquid crystal optical element comprising: (a) an oriented ferroelectric liquid-crystalline polymer layer which exhibits chiral smectic C phase, and (b) two electrically conducting layers which support the oriented ferroelectric liquid-crystalline polymer layer between them, where at least one of the two electrically conducting layers is transparent. The liquid crystal optical element can be easily made into one having a large area and can be used as a flexible display screen. Further, it has excellent electric field response property and high contrast. Furthermore, the production of the liquid crystal optical element and the control of its thickness can be easily conducted.

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Sodegaura, Japan

Kimihiro Yuasa