摘要:
An outer sleeveless type resilient bush wherein a resilient body fixed to the outer circumference of an inner sleeve is brought into contact with the inside face of a support hole of an article to be supported, an inserted sleeve being embedded in the resilient body, axial notches and split grooves are respectively formed on the inserted sleeve and the resilient body. flanges that bend in the diametrically outwards direction are formed at both ends of the inserted sleeve, and arranged to extend outwards in the diametrically outwards direction and the flange at one end is made capable of reduction in diameter, so that the resilient bush can be inserted into the support hole from the side of this flange, and resistance to withdrawal from the support hole can be increased and performance is improved by making the initial compression ratio of the resilient body large.
摘要:
A reflection type liquid crystal display device having a wide viewing angle, and capable of assuring a light utilization factor at or above a certain value for bright display even when conditions of an external light are varied is provided. The reflection type liquid crystal display device comprises (a) a liquid crystal cell comprising an upper substrate, a lower substrate and a liquid crystal layer between the substrates, (b) a polarizing film provided in a side of the upper substrate in the liquid crystal cell, (c) light reflecting means provided in a side of the lower substrate in the liquid crystal cell; and (d) an optical member provided between the polarizing film and the liquid crystal cell, and having a retardation axis when it is viewed in the normal direction. An angle between an absorption axis of the polarizing film and the retardation axis of the optical member is within a range of about 88° to about 92° or about −2° to about +2° . A retardation value in relation to the normal direction of the optical member is within a range of about 50 nm to about 500 nm.
摘要:
In a reflective liquid crystal display device with a single polarizing film and two retardation films located in between the polarizing film and liquid crystal cell, the angle of twist of nematic liquid crystal is 45°˜90°, the product of the birefringence of the liquid crystal and the thickness of the liquid crystal layer is 0.20 &mgr;m˜0.30 &mgr;m, the retardation value of the retardation film on the polarizing film side is 0.13 &mgr;m˜0.18 &mgr;m, the retardation value of the retardation film on the liquid crystal cell side is 0.13 &mgr;m˜0.18 &mgr;m, and the Z coefficient of each of two retardation films is 0.3˜1.0. This invention is featured by the following optical relations, that is, ØP 75°˜195°, ØP−ØF1, 105°˜115°, and ØP−ØF2, 165°˜175°, where ØP, ØF1 and ØF2 are angles formed by the reference line and respectively the direction of the absorption axis of the polarizing film, the direction of the slow axis of the retardation film on the polarizing film side, and the direction of the slow axis of the retardation film on the liquid crystal cell side. With the foregoing construction, a high contrast display of bright achromatic white and achromatic black is achieved.
摘要:
A reflective liquid crystal display device of the present invention has the following construction. A transparent electrode is provided via color filter layer on a transparent substrate positioned at the upper side of the device. A metallic reflective electrode is provided on a substrate positioned at the lower side of the device. An alignment layer is provided on the transparent electrode and on the metallic reflective electrode respectively. The transparent substrate positioned at the upper side and the substrate positioned at the lower side are arranged parallel to each other with alignment films provided on the transparent electrode and on the metallic reflective electrode facing each other. A liquid crystal layer is provided between the alignment films. A scattering film is provided on a surface of the transparent substrate positioned at the upper side opposite to the surface where the transparent electrode is provided. A polymer film and a polarization film are provided in that sequential order on the scattering film. The present reflective liquid crystal display device can express a black and white display in achromatic color having bright white display and with high contrast, and has low visual angle dependency and excellent optical characteristics.
摘要:
A reflective liquid crystal display device of the present invention has the following construction. Only one polarization film is needed. The twist angle of the nematic liquid crystal layer is set in the range of 0° to 90°. The product of the birefringence of the nematic liquid crystal layer &Dgr;nLC and the thickness of the liquid crystal layer dLC, &Dgr;nLC·dLC, is in the range of 0.35 &mgr;m to 0.50 &mgr;m. The birefringence difference, &Dgr;R=RFilm−&Dgr;nLC·dLC is in the range of −0.20 &mgr;m to 0.00 &mgr;m. When a reflective liquid crystal display device is seen from a side of a substrate positioned at the upper side, the direction of the liquid crystal which is twisted to a side of a substrate positioned at the lower side is designated as the positive direction, &phgr;LC represents an angle between the base line and the longer axis direction of the liquid crystal molecule which is positioned most closely to a first substrate, &phgr;F represents an angle between the base line and the retardation axis direction of the polymer film, &phgr;P represents an angle between the base line and the adsorption axis direction of the polarization film, &phgr;F−&phgr;LC is in the range of 70° to 110°and &phgr;P−&phgr;F is in the range of −90° to −60°.
摘要:
A reflective liquid crystal display device comprising a polarizer, a retardation film, a front scattering film layer, and a liquid crystal cell having a mirror reflector, in which the front scattering film layer includes at least one film of which scattering angle range is asymmetrical to the normal direction of film. A plural front scattering films of which scattering angle range is asymmetrical to the film normal are laminated so that the projection direction onto the film surface in the central angle direction of the scattering angle range may be different. At least one of the scattering films for composing the scattering film layer is a front scattering film for scattering more strongly the transmission light from the second incident angle region not containing the film normal direction than the transmission light from the first incident angle region containing the film normal direction.
摘要:
A reflection type liquid crystal display apparatus has a liquid cell having an upper substrate having an electrode pattern formed with transparent electrodes, a lower substrate opposed to the upper substrate and having an electrode pattern formed with metallic reflecting electrodes, an orientation film formed on each of the two electrode patterns, and containing liquid crystal put between the upper and lower substrates, and an electronic part connected to the liquid crystal cell and used to drive the liquid crystal cell, wherein each of the metallic reflecting electrodes is a two-layer film composed of Ti and Al alloy and formed on the lower substrate.
摘要:
A disc unit in which a disc which is inserted into the data storage disc unit in a wrong direction or upside down is automatically discharged from the disc unit. Such a wrong insertion of the disc is detected in response to an index signal generated every time the disc makes one rotation or by detecting an aperture of a disc cassette in which the disc is accommodated.
摘要:
This invention provides an optical filter comprises of a pair of solid polymer films, wherein (1) a first solid polymer film has a planar alignment of a cholesteric liquid crystal structure of either clockwise or counterclockwise helical structure, which alignment allows the light of a specified wavelength to be scattered selectively, and (2) a second solid polymer film has a planar alignment of a cholesteric liquid crystal structure of a helical structure whose helical direction is the opposite to that of the first solid polymer film, which alignment allows the light at the specified wavelength to be scattered selectively, wherein the optical axes of the first and second solid polymer films are made substantially parallel to each other.This invention also provides preparation methods of an optical filter mentioned above.
摘要:
In a color liquid crystal display apparatus of twisted nematic type, thicknesses of the liquid crystal layer is made different for different color picture elements, thereby optical rotatory dispersion which has been the cause of undesirable light transmittance at 0 voltage input is minimized, so that contrast, range of reproduced color, view angle dependency, etc. are improved, and a color liquid crystal display apparatus capable of displaying splendid picture quality is provided.