Abstract:
A method of manufacturing rectifying device by cutting a lamination of semiconductor wafers each having a P-N junction formed therein along planes perpendicular to the plane of the wafer and subjecting the resultant divided series diode laminations to an etching treatment with a blend etching liquid composed of hydrogen fluoride, nitric acid and acetic acid. The etching liquid strongly acts upon the N-type region, while it weakly acts upon the P-type region, so that a configuration similar to that which would be obtained through a positive bevel treatment may be obtained. Thus, it is possible to obtain a high breakdown voltage rectifier which is hardly subject to destruction due to a transient reverse voltage.
Abstract:
In a transparent resin wafer are confined units made up of a light-emitting diode capable of emitting infrared light and a luminescent stick consisting of infrared-excitable luminescent material and transparent resin, and seven of these units are arranged so as to indicate a numeral by seven light segments, so that when specified ones of the light-emitting diodes are lit, the respective sticks or strips combined therewith are excited by infrared light from the light-emitting diodes to indicate a desired numeral. By selecting a suitable luminescent material, any desired color is obtainable.
Abstract:
Phosphor particles coated with a mixture of GeO2 and SiO2 or a mixture of WO3 and SiO2 are dispersed in an aqueous solution of a photosensitive resin together with a protective dispersing agent for the particles in the solution to form a slurry. Y2O3 :Eu phosphor particles with the coating are chemically stable and do not hydrolize in the slurry. The slurry is then applied to the inner surface of a glass tube. The resulting phosphor film is dried, printed and developed by the photographic technique to form a desired pattern of the phosphor material. By the invention manufacturing a bright color picture tube employing Y2O3:Eu phosphor becomes possible in commercial success.
Abstract translation:将涂覆有GeO 2和SiO 2或WO 3和SiO 2的混合物的荧光体颗粒与用于溶液中的颗粒的保护性分散剂一起分散在感光性树脂的水溶液中以形成浆料。 具有涂层的Y 2 O 3:Eu荧光体颗粒是化学稳定的,并且在浆液中不水解。 然后将浆料施加到玻璃管的内表面。 通过照相技术将所得的荧光膜干燥,印刷和显影,以形成所需的荧光体材料图案。 通过本发明,制造使用Y 2 O 3:Eu荧光粉的明亮彩色显像管成为商业上成功的可能。
Abstract:
This invention relates to an electric light-emitting apparatus, wherein electric light-emitting diodes 4 are contained in lightconducting wafers 5 of transparent resin embedded in recesses 3, which are formed on an electrically conductive substrate 2, respectively, and each wafer 5 has an oblique diffused-reflection plane 6 for reflecting the light conducted from the lightemitting diodes 4.
Abstract:
This invention relates to a method for manufacturing a MOS integrated circuit, especially to a method for connecting two regions in a MOS integrated circuit, wherein the connection is performed by means of a diffusion region formed prior to forming the gate portion and said diffusion region is a conductivity type opposite to that of a silicon substrate. According to the invention, it is not necessary to interconnect the two regions on the surface of the silicon substrate, so that a higher degree of integration will be attained as compared with the prior art.
Abstract:
The disclosure is of a matrix-type glow indicator tube capable of displaying a number of three figures. The indicator tube includes three groups of separate and distinct cathode elements, each group making up a figure eight. Three transverse cathode elements of each group are disposed on the top surface of an insulating plate having apertures extending therethrough, so that they extend transversely over their associated aperture. Each group also includes four longitudinal cathode elements which are disposed on the bottom surface of the insulating plate, so that they extend longitudinally under their associated aperture. An anode element is provided for each group of the cathode elements and lies in the same stratum as the longitudinal cathode elements. The anode element is positioned between the longitudinal cathode elements and extends parallel thereto. In this construction, the cathode elements of each group are energized in different combinations to provide representation of numerals zero to nine.
Abstract:
In a color image pick-up tube using a silicon target plate as a photo-electric transducer, the main portion of the face plate is slightly elevated except at its peripheral annular portion to form a flat-topped convexity on which a color filter is formed and the peripheral protrusion of the silicon target plate is fastened to the peripheral annular portion of the face plate, so that the target area of the target plate is arranged in opposition to the color filter with a small gap left therebetween.
Abstract:
Disclosed is a pressure-sensitive transistor whose emitter or collector junction is formed by use of a Schottky barrier junction and wherein the current through the transistor changes in accordance with the applied pressure when pressure is applied to said junction by pressure applying means. Such a transistor is advantageous in that a high pressure-to-current conversion factor is obtained, little noise is generated at the junction, and the reverse leakage current appearing at the junction is extremely small.
Abstract:
An insulated gate field-effect transistor constructed by forming, in a portion of the semiconductor substrate close to the source region, a region which constitutes a p-n junction with the substrate, and by connecting this latter region to the gate electrode, whereby there is caused, between said region and the source, a current due to punch-through at high gate voltage so that the breakdown of the transistor is prevented.
Abstract:
IN ORDER TO AVOID UNDESIRABLE LOSS OF COLOR DISPARITY IN THE PERFORMANCE OF A CATHODE RAY TUBE OF THE MULTIBEAM, MULTI-COLOR, SHADOW MASK TYPE, IT IS PREFERABLE TO LIMIT THE DIAMETER OF EACH COLOR DOT ON THE PHOSPHOR SCREEN. IN THE PROCESS OF FIXING PHOSPHOR DOTS ON A PHOSPHOR SCREEN INSIDE A FACE PLATE OF THE CATHODE RAY TUBE DURING THE FABRICATION THEREOF, A SPECIALLY SHAPED LIGHTEMITTING SOURCE IS EMPLOYED, IN ORDER TO LIMIT THE DIAMETER OF EACH PHOSPHOR DOT TO NO LARGER THAN THAT OF EACH APERTURE IN THE SHADOW MASK THROUGH WHICH ULTRAVIOLET RAYS STRIKE THE SCREEN TO FIX SAID DOT. SAID LIGHT-EMITTING SOURCE IS FORMED TO HAVE A LIGHT-EMITTING FACE WHICH IS SHAPED IN THE FORM OF A RING DISPOSED IN PARALLEL RELATIONSHIP WITH THE FACE PLATE AND WHICH IS FORMED ON THE TOP OF A LIGHT CONDUIT MADE OF A TRANSPARENT MATERIAL.