Abstract: A liquid crystal display device of this invention includes a substrate having a pixel electrode on one major surface, a liquid crystal layer including first and second liquid crystal microcapsule layers sequentially stacked on the pixel electrode of the substrate, and a counter electrode formed on the liquid crystal layer. Each of the first and second liquid crystal microcapsule layers contains a plurality of aspherical liquid crystal microcapsules each formed by encapsulating a liquid crystal material containing a liquid crystal compound and a dichroic dye with a transparent film. The major axes of aspherical liquid crystal microcapsules contained in the first liquid crystal microcapsule layer are aligned in a first direction. The major axes of aspherical liquid crystal microcapsules contained in the second liquid crystal microcapsule layer are aligned in a second direction different from the first direction.

Abstract: The present invention provides a process for the production of glyoxals which comprises effecting the oxidative dehydrogenation of a glycol at a temperature of 400.degree. to 700.degree. C. in the presence of a silver-based catalyst composed of silver and at least one element selected from the group consisting of gold, platinum, rhodium and palladium, and phosphorus or a phosphorus compound, as well as such catalysts. These process and catalysts make it possible to produce high-quality glyoxals in high yield and with industrial advantages while minimizing the contents of unreacted raw material and reaction intermediates such as glycolaldehyde and acetol.

Abstract: A light receiving device and a circuit device which includes an amplifier directly connected to the light receiving device are provided on a frame which is connected to a power source potential. The light receiving device and circuit device are integrally covered with resin. On electrodes through which the light receiving device and circuit device are connected to the frame, semiconductor substrates of the same conductivity type are provided, respectively.

Abstract: A terminal connection device changes and connects a plurality of terminals to one telephone line according to kinds of ringing signal sequences sent through the telephone line. The terminal connection device comprises switches connecting between the telephone line and the terminals, a control circuit commanding ON/OFF operation of the switches, and a photo coupler converting the ringing signal obtained through the telephone line into light signal and inputting the light signal to the control circuit. The control circuit includes a device for judging as to whether a ringing signal sequence sent through the telephone line is the same as the sequence data or not.

Abstract: The invented auto-ranging device has a signal measuring A/D converter, a range-switching A/D converter of a faster processing speed, a range-switching amplifier with variable amplification capabilities, and a processing controller which utilizes the variable amplification factors to alter the output signals from the switching A/D converter to generate signals appropriate for a scale range of a multi-range measuring A/D converter.

Abstract: Sinterable crystalline aluminum nitride powder is produced by reacting alkyl aluminum with ammonia in a gas phase to produce an amorphous aluminum nitride presursor powder, and subjecting the precursor powder to a primary calcination in a reducing gas containing at least 20% (vol.) ammonia at 600.degree. C. to 1300.degree. C., and then subjecting the calcined aluminum nitride to a secondary calination in an inert gas or a reducing gas at 1400.degree.-1750.degree. C.

Abstract: An LED stabilizing light source device comprises an LED, a drive circuit for driving the LED, a wavelength filter for filtering the light emitted from the LED, a light splitter for splitting the light passing through the filter, a photodiode for receiving the split light. The device further comprises a feedback loop for feeding an output of the photodiode to the drive circuit.

Abstract: A method for preparing high-purity aluminum nitride having high thermal conductivity and heat resistance for aluminum nitride substrates, which comprises the steps of reacting an organic aluminum compound with an aminotriazine in a solvent to obtain an aluminum nitride precursor, separating the precursor form the solvent, and heating the precursor at a temperature of 600.degree. C. or more in a reducing atmosphere and/or a non-oxidizing atmosphere. An aluminum nitride sinter is prepared by, if necessary, adding a sintering auxiliary to the above aluminum nitride powder, molding the powder into a desired shape, and then sintering the molded material at a temperature of 1,600.degree. to 2,000.degree. C. in a non-oxidizing atmosphere.

Abstract: A method for preparing high-purity aluminum nitride having high thermal conductivity and heat resistance for aluminum nitride substrates, which comprises the steps of reacting an organic aluminum compound with an aminotriazine in a solvent to obtain an aluminum nitride precursor, separating the precursor from the solvent, and heating the precursor at a temperature of 600.degree. C. or more in a reducing atmosphere and/or a non-oxidizing atmosphere. An aluminum nitride sinter is prepared by, if necessary, adding a sintering auxiliary to the above aluminum nitride powder, molding the powder into a desired shape, and then sintering the molded material at a temperature of 1,600.degree. to 2,000.degree. C. in a non-oxidizing atmosphere.

Abstract: A self-canceller for a turn signal indicator comprises the following features: (a) its body has a retaining element with three recesses formed therein; (b) the body is provided with a movable bracket capable of rotating; (c) a control lever is fastened to the movable bracket; (d) two side stoppers, a center stopper, and a spring housing are fastened to the movable bracket; (e) an engaging ball and a compression spring are contained in the spring housing; (f) a ratchet mount is provided between the center stopper and the compression spring; (g) the compression spring is supported by the engaging ball at one end and by the ratchet mount at the other end; (h) the engaging ball can be engaged with any of the three recesses of the body according to the rotary movement of the movable bracket; (i) two cancel ratchets are formed on the ratchet mount; and (j) when the cancel cam moving in the rotating direction of the control lever makes contact with either of the cancel ratchets, the ratchet mount can rotate about a

Abstract: A time difference switch turns on and off two electric circuits, under the operation of a common operating member, with an adequate time difference. The section of the switch that defines a step dimension that facilitates the time difference is relatively short, and for this reason, the likelihood of a change in the predetermined step dimension, i.e., in the time difference, is lessened. Thus, a time difference switch providing a predetermined accurate time difference is provided.

Abstract: There is disclosed a process for producing silanes by reducing polyhalosilane with a mixture of alkyl aluminum hydride and trialkyl aluminum, in which a treatment for reducing the content of trialkyl aluminum in the mixture is lowered to 10 mol. % or less of alkyl aluminum hydride prior to the reduction reaction.As to methods for reducing the content of trialkyl aluminum in the mixture, there are provided, for example, distillation, recrystallization, separation by complex formation, pyrolysis of trialkyl aluminum and decomposition by hydrogenation of trialkyl aluminum.

Abstract: A continuous granulator includes a granulator body for continuously processing powdered materials into granules, and a screw conveyor for discharging the produced granules from the granulator body, the screw conveyor including a pneumatic classifier for separating or classifying the produced granules while they are being conveyed. The pneumatic classifier includes a porous lower portion of the screw conveyor which permits passage of streams of pressurized air therethough into the interior of the screw conveyor. With this construction, discharging conveyance of the produced granules and classification of the produced granules can be carried out concurrently at the same station and hence the granules of a uniform grain size can be produced at an increased rate.

Abstract: A plastic lens array including the following members which are formed integrally as one block by a plastic material; a lens array body member; a plurality of object convex lenses into which the light from an object is made incident, the object convex lenses being arranged side by side in one row along one side of the lens array body member; a plurality of image convex lenses corresponding to the object convex lenses, and being arranged side by side in a row along an opposite side of the lens array body member; a plurality of image inverting portions corresponding to the object convex lenses, each of the image inverting portions having a pair of roof surfaces which are substantially normal to each other to invert the image of an object; a first reflecting surface arranged at the backs of the object convex lenses, for totally reflecting the incident light of an object through the object convex lenses with an angle exceeding a critical angle and for guiding the reflected light of the object to a roof surface in

Abstract: First and second dielectric multilayer film filters are disposed along a straight optical axis and inclined about 45.degree. with respect thereto. The second filter is rotated about the optical axis by a predetermined angle with respect to the first filter so as to divide a path of light incident upon or emitting from the first filter into a first path of light transmitting through the first and second filters, and a second path of light reflected by the first filter. The second path is orthogonal to the first path. The apparatus is used for separating or synthesizing light signals.

Abstract: An improved ink composition is disclosed which comprises, in addition to a solvent dye, one or more low-melting compounds, containing hydroxyl and/or ethylene oxide, and inorganic or organic fine particles. An ink sheet comprising such ink composition is also disclosed. The ink sheet is effectively reusable in a heat transfer recording process.

Abstract: There is disclosed a process for producing germanes by reducing germanium halide with a mixture of alkylaluminum hydride and trialkylaluminum, in which a treatment for reducing the content of trialkylaluminum in the mixture to 10 mol. % or less relative to the alkylaluminum hydride is carried out prior to the reduction reaction. As to the treatment for reducing the content of trialkylaluminum in the mixture, there are provided, for example, distillation, recrystallization, complex formation followed by separation, pyrolysis and decomposition by hydrogenation and addition of alkylaluminum halide to said mixture.