Abstract: The present invention discloses an electrical connector having a first frame and a second frame each having a U-shape portion. The first and second frames are provided at the end edges of the leg portions of the U-shape portions thereof with inwardly turned engagement portions. These engagement portions of the first and second frames of the first and second frames are inserted, as brought face to face with each other, into engagement grooves formed in left- and right-hand lateral sides of a contact piece supporting member, so that the first and second frames are mounted on the contact piece supporting member. That is, the first and second frames surround the contact piece supporting member with no portions of the frames overlapping each other. A cap which overlaps portions of the frames may be slidably put and mounted on a signal cable.

Abstract: An electrical jack assembly for connecting a rotary plug is disclosed for use in a cooking range equipped with a turntable and an oven unit, the assembly includes three main units: a sleeve unit, a casing, and a rear cover; the sleeve unit has a cylindrical sleeve with a central bore for insertion of the plug at its front; the casing incorporates two paired leaf spring contact frames, each having a contact angled inward to form two paired contacts on the plug at different longitudinal points on the plug, each contact has an oil-impregnated roller at its end, and the rollers are each arranged to contact the plug at right angles to the longitudinal axis of the plug; the rear cover is mounted with a switch unit at its rear, the switch unit includes two segments which are mounted across a center hole of the rear cover to form a contact point at a head end of the inserted plug, wherein one segment thereof is provided with an insulating plate which is exposed in the central hole to contact to the head end of the pl

Abstract: In projection device light from a point light source unit is reflected by a first reflecting mirror to produce parallel rays, which are applied to a color active matrix liquid crystal display unit. The parallel rays having passed through the liquid crystal display unit are converted by a second reflecting mirror into a bundle of rays of a desired solid angle for projection onto a screen.

Abstract: In a contact plug connector to be coupled with a socket having contact ends, the contact plug includes an insulative body which encloses a plurality of separated terminal liune extender strips combined with two unslotted carrier ends, an insulative base which mounts with the body such that contact mounts for the extenders strips are accessible for electrical contact, and a housing which encloses the body and the base. The extender strips are formed on one metal plate in this invention, but are defined and separated by slots formed on the metal plate. Although these extender strips are fragile, their handling becomes convenient with the unslotted carrier ends that are cut off in the process of assembling the plug connector.

Abstract: A liquid crystal display device comprises, a plurality of display electrodes which are selectively energized through on-off control of thin film transistors. In order to reduce the channel length of the thin film transistors to increase operation speed and obtain uniform characteristics each display electrode and an associated transistor source electrode is formed on one of a pair of transparent substrates of the liquid crystal display device, a semiconductor layer is formed between the display electrode and source electrode, a gate insulating film is formed on the semiconductor layer, and a gate electrode is formed on a portion of the gate insulating film between the display electrode and source electrode. Then, ions are implanted into the semiconductor layer with the gate electrode used as a mask, thus rendering portions of the semiconductor layer contiguous to the display electrode and source electrode into ohmic layers.

Abstract: A memory card connector arranged is related such that, at the time of initial insertion and removal of a memory card, the contact pieces of the connector do not come in contact with the external contact pieces of a memory card, thus preventing the operator from receiving the spring loads stored in the contact pieces, at the time of such insertion and removal. At a set position of the memory card, the slider engaged with the memory card is moved toward the contact pieces with the use of a raised guide surface. Accordingly, the contact pieces displaced against the resiliency thereof come in contact with the external contact pieces of the memory card.

Abstract: A pin jack, an electric connector element having a bored hole to receive a pin plug, is improved to have flexible adaptability in light of the size of openings to be formed on a terminal plate. Normally audio class pin jacks are non-coaxial, but radio level or higher frequency class pin connectors are of coaxial cable formation. These different kinds of connectors need openings with different diameters which lead to terminal plates having mixed size openings in order to meet mixed mountings. This difficulty is solved by rendering a inventive pin jack with two different concentric mounting diameters, of which a larger one of the diameters, which may be referred to as jacket ring, is externally formed to cover a portion of a cylindrical extension and is to be integrally connected to a cubic body base.

Abstract: In a connector plug with a locking mechanism which can be locked to the mating socket, no matter what part of the plug may be gripped when inserting it into the mating socket, and can be unlocked only by pulling a tubular member of the plug, an insulating body holding pin contacts is disposed in a cylindrical front half portion of a metal cover whose rear half portion is semi-cylindrical. The cylindrical portion of the metal cover has cut therein U-shaped grooves, defining tongue-shaped locking pieces each having a protrusion. The semi-cylindrical portion of the metal cover has attached thereto a metal clamper for clamping a cable and is covered with a semi-cylindrical auxiliary cover to form a rear cylindrical portion. Elastic support pieces of a resin material for supporting the tongue-shaped locking pieces on the inside thereof are axially slidably mounted in the cylindrical portion of the metal cover, and the elastic support pieces are forwardly biased by a coiled spring disposed around the metal cover.

Abstract: A card connector to be used for memory cards having a connector body and a plate-like frame attached to a frame member having a card insertion and removal opening(s), and a slider(s) operable in association with the card insertion/removal operation attached to the frame in an overlapping manner. The card connector is made thin with high mechanical strength assured. In particular, a plurality of cards may be overlappingly mounted on the card connector. Both release of the cards, held at setting positions and card unloading, are carried out by a single operation of actuators.

Abstract: A liquid crystal display device comprises a plurality of display electrodes which are selectively energized through on-off control of thin film transistors. In order to reduce the channel length of the thin film transistors to increase operation speed and obtain uniform characteristics, each display electrode and an associated transistor source electrode is formed on one of a pair of transparent substrates of the liquid crystal display device, a semiconductor layer is formed between the display layer and source electrode, a gate insulating film is formed on the semiconductor electrode, and a gate electrode is formed on a portion of the gate insulating film between the display electrode and source electrode. Then, ions are implanted into the semiconductor layer with the gate electrode used as a mask, thus rendering portions of the semiconductor layer contiguous to the display electrode and source electrode into ohmic layers.

Abstract: A source electrode and a drain electrode are formed apart on an insulating substrate, and a semiconductor layer is formed on the substrate between the source and drain electrodes. An insulating organic molecular film is formed all over the source and drain electrodes and the semiconductor layer. Ions are implanted into a selected top surface region of the insulating organic molecular film, corresponding to the semiconductor layer, by which chains of molecules in the surface region are cut to form free carbon, providing a conductive gate electrode.

Abstract: A socket and plug coupling assembly wherein the socket is a box-like frame with walls of the top and front partially removed, and has pins arranged on a bottom to extend upwardly. At the base of the pins the remaining front stub wall forms a brace in which a slope is formed to be inclined inwardly downwardly of the socket frame. The plug is shaped to be a box-like frame with openings on a bottom continuing to a front wall and the plug has contact members inside the frame openings facing frontwardly. A nail is provided at a rear end of the plug frame extending downwardly from the bottom. In a coupling action of the plug with the socket, first, the nail of the plug is obliquely contacted on the slope of the socket via a face to face approach of the plug toward the socket and then, rotating inwardly about the contact of the nail with the slope, the plug is turned to couple with the socket.

Abstract: A jack with a switch includes a square-sectioned body of an insulating resin material which has on its front a cylindrical sleeve for receiving a plug, and an open rear end. The body has an internal regulating rib molded integrally therewith and extending from the rear end of the sleeve toward the rear opening of the body through a hole made in a leaf contact piece, for limiting inclination of a plug inserted into the body. An L-shaped lug is inserted into the body through its rear opening so that the tip of the plug is gripped by top and bottom contact pieces extending from the lug. A separator, inserted into the body through its rear opening, has a U-shaped base portion for receiving the tip end portion of the plug and a pair of movable pieces extending from right and left end portions of the base toward the sleeve.

Abstract: The electrical connector forming a plate over plate arrangement is configured by a connector body, a plurality of female pins, male pins, and mount plates. Vertical through holes for insertion of the male pins and lateral holes for the female pins are provided with the connector body and intersecting respectively in the body, wherein a female pin each having a bifurcate portion at its tip is inserted into the lateral through hole so that the bifurcated portion is located at the intersection, and a male pin mounted on another plate to be connected is inserted in the vertical through hole. The bifurcated portion of the female pin each makes a contact with the male pin, when a plate mounted with male pins is approached closely to a plate mounted with a female pin-inserted connector body.