Abstract: An impurity-doped amorphous silicon semiconductor layer is deposited on a substrate, source and drain electrodes are deposited apart from each other on the amorphous silicon semiconductor layer in ohmic contact therewith and a gate electrode is deposited on the amorphous silicon semiconductor layer in Schottky contact therewith between the source and drain electrodes, thereby forming a thin film transistor.

Abstract: The disclosure relates to a connector for connecting at least two printed circuit boards without forming a soldered connection to any of the boards. The connector includes a housing having a front face and a rear face, each face being formed with an elongated aperture for receiving therein one edge of a corresponding printed circuit board. A plurality of contact guide channels are formed in the housing extending in parallel spaced relation between the front and rear faces and opening in both faces on opposite sides of the elongated board receiving apertures. Each contact has curved, circuit engaging fingers adjacent to the opposite ends thereof. Each channel is in communication with the elongated apertures to allow the contact's fingers to extend into the apertures thus making electrical contact with circuitry on the printed circuit boards. Each contact may be assembled into a corresponding channel from one housing face in a manner to result in a proper preloading of the contact.

Abstract: A heart cam type locking mechanism is provided by which in response to a first push button depressing operation, a moving member is locked at a first position in a casing, the moving member is locked at a second position in response to a second push button depressing operation and the moving member is returned to its initial position in response to a third push button depressing operation. The inside of the push button is divided by a partition plate into first and second optical path spaces. A lamp is disposed in the casing so that it emits light into the first and second optical path spaces. A light shielding plate of a resilient material is disposed in the first optical path space and fixed at one end to the moving member.

Abstract: This invention relates to a jack with recessed contacts, wherein a contact collection plate is formed by punching a metal plate. The contact collection plate includes a plurality of contacts which are arranged in the lateral direction of the contact collection plate so that they do not overlap one another when the contact collection plate is viewed in development. The jack also has a contact holding member of electrical insulating material within which one end of each contact is recessed. The plurality of contacts are formed by bending each part which is to become a contact relative to the recessed end.

Abstract: An array of thin film transistors is fabricated by forming a plurality of spaced closely adjacent metallic source and drain electrodes on an array area of a transparent substrate, forming semiconductor layers on the substrate between each adjacent pair of source and drain electrodes in overlapping relation to the edges of each such pair, covering the semiconductor layers with a gate insulation film that extends over substantially all of said array area, forming a transparent gate electrode layer over the gate insulation film, covering the transparent gate electrode layer with a photosensitive resin layer which is then exposed to light through the transparent substrate and transparent gate electrode layer with the metallic source and drain electrodes acting as masks, developing the photosensitive resin layer to remove portions thereof other than the exposed portions, and etching the transparent gate electrode with the remaining portions of the resin layer serving as masks thereby to form the gate electrodes of

Abstract: A tubular insulating cover, open at its both ends, has disposed therein a cylindrical shielding conductor coaxially therewith. First and second connector sockets are fitted into the cylindrical shielding conductor from its both ends, in which corresponding contacts of the first and second connector sockets are interconnected. The outer end faces of the first and second connector sockets each has cut therein an annular groove for receiving a cylindrical metal cover of a mating plug. An annular contact for engagement with the cylindrical metal cover of the plug is received in each of the annular grooves and terminals of the annular contacts are connected to the cylindrical shielding conductor.

Abstract: Contact pieces are accommodated respectively in contact housings in a main body portion. Each of the contact pieces has an intermediate portion extending between a contact portion and a terminal portion and force-fitted and held as a first discharge electrode portion in first positioning grooves. An arcuate grounding conductor is disposed on the main body portion and has integral second discharge electrode portions and dust-prevention lug portions. The second discharge electrode portions are held in confronting and spaced relation to the first discharge electrode portions via discharge gap holes formed in a side wall portion of the main body and are force-fitted and held in second positioning grooves. The first and second discharge electrode portions define discharge gaps therebetween.

Abstract: A liquid crystal cell comprises a liquid crystal sealed between a pair of confronting transparent substrates. A multiplicity of semiconductor driver elements are substantially uniformly distributed over an inner surface of one of the substrates. The semiconductor driver elements have output electrodes connected respectively to matrix element electrodes formed on the inner surface of said one of the substrates. A driver circuit is formed as a semiconductor integrated circuit on an extension of the inner surface of said one of the substrates for selectively driving the semiconductor driver elements.

Abstract: A connector socket, similar to a so-called DIN type socket, has a terminal board attached to a side surface of the connector socket insulating body, and contacts are bent at a right angle to extend from the rear end surface of the insulating body and are passed through the terminal board as the terminals. An annular contact is inserted into an annular recessed groove formed in a front surface of the insulating body and earth terminals are formed to extend from the rear end of the annular contact and project out behind the insulating body. A U-shaped shield cover is mounted to cover the side surfaces of the insulating body. The shield cover is coupled and fixed to the earth terminals, and shield terminals are formed integrally with the shield cover at both end portions of the U-shape to extend beyond the terminal board.

Abstract: A jack having a structure in which a movable contact is driven and separated from a fixed contact when a plug is inserted thereinto and the movable contact is brought into contact electrically with the plug. A free-end part of the movable contact is formed as the plug receptor which is in contact with the inserted plug and is driven by the plug, and both marginal sides of the plug receptor are extended and bent towards the fixed contact to form a pair of holding parts which are provided with flaps extending rearwardly to approach each other. These flaps resiliently hold therebetween the inserted plug. Contact parts are defined at the marginal portions of the holding parts on the side of the fixed contact so as to be in resilient contact therewith.

Abstract: An internally split type jack, comprising: a casing, the casing having a front end wall formed with a plug inlet hole and partition walls having plug passage holes formed therein aligned coaxially with the plug inlet hole and of substantially corresponding diameter, an inner casing wall of each housing space having a slot closed at one end formed therein; a plurality of electrical contact pieces mounted one in each of the housing spaces, each of the contact pieces comprising: a main body with a further plug passage hole therein substantially corresponding in diameter to the plug inlet hole; cooperating resilient contact-makers disposed on opposite sides of the further plug passage hole; and, one side edge adapted to slidably engage in the slot and so properly position the contact piece in the housing space to align the further plug passage hole coaxially with the plug inlet hole and the plug passage holes; and, at least one abutment disposed in at least one of the housing spaces to limit outward movement of a

Abstract: This invention discloses a switch structure wherein a plurality of metallic contacts are recessed in a contact holding member of electrical insulating material, each contact is arranged not to overlap one another when each contact is developed on the same plane, and by bending a part not to be recessed of at least one contact a contact area is formed facing a corresponding contact area formed on the part not be recessed of another contact so as to perform a relative contacting and separating operation.

Abstract: The present invention discloses a multiple switch using a rotary actuator comprising a stationary terminal block in which a plurality of stationary terminals are arranged, a movable terminal block in which a plurality of movable terminals are arranged for the elastic contact with the stationary terminals, an actuator incorporated into a body to be rotatable at a specified angle when an external force is applied by means of a plunger or the like and returning automatically to its original position by means of an elastic member when the external force is released, a first projection group having at least one projection mounted on the actuator pressing at least one movable terminal to separate the movable terminal from the stationary terminal, a second projection group having at least one projection mounted on the actuator releasing the pressure to at least one movable terminal to come in the elastic contact with the stationary terminal, an the on-off control thereof being carried out based on the principle of a

Abstract: Female contacts are fixedly held in insertion channels formed in a body of a connector socket. A conductive plate is disposed on a front face of the body in contact therewith. In the conductive plate are formed small holes of a diameter slightly greater than that of conductive pins of a plug, in opposing relation to the insertion holes. The conductive plate has an integral grounding terminal. The arrangement is such that, when the plug pins are inserted into the holes of the conductive plate, as the plug pins are being inserted into the female contacts of the socket, any electrostatic charge on the pins is discharged to ground via the conductive plate and grounding terminal rather than being discharged from the pins to the socket contacts.

Abstract: A telephone connector comprises: a box-shaped body having front, rear and bottom walls, the front wall having a plug inlet formed therein for receiving a comb-tooth shaped plug and the rear and bottom walls having a holder mounting opening formed therein; the bottom and rear walls together having formed therein three sets of aligned, parallel grooves; a plurality of pre-shaped conductive springs adapted for insertion through the holder mounting opening and for mounting in the grooves; and, a spring holder having a rear side portion and a projecting piece adapted to be locked into a position closing the holder mounting opening to seal the body against dust intrusion, the projecting piece having a free edge pressably engaging the springs and the rear side portion having a projecting rib forming a lower abutment effectively closing those grooves in the rear wall, whereby a plurality of full pre-shaped spring contacts may be easily inserted and precisely positioned in the body, and positively secured therein.

Abstract: A contact array plate having a plurality of contact pieces arranged to extend between first and second coupling pieces is formed by punching of a sheet of metal. A first housing half is molded integrally with the contact array plate so that intermediate portions of the contact pieces are buried in the first housing half. Then the first and second coupling pieces are cut off to separate the contact pieces from one another and outwardly projecting portions of the contact pieces are bent along shaped sections of the peripheral surface of the first housing half to form contact propers. A second housing half acting as bending dies is assembled with the first housing half with the contact propers inside thereof to define therebetween an insertion opening for receiving a mating connector.

Abstract: Locking springs project from a plug body, and support bars are axially movably held against the locking springs. The support bars axially engage a coupling sleeve through engagement members. With the support bars in engagement with the coupling sleeve, the support bars are urged to move in a forward direction under the bias of a coil spring. When a plug is to be coupled to a socket, the support bars are caught by a front surface of a socket body, allowing the locking springs to be inserted into an insertion slot in the socket body. When protrusions on the locking springs are inserted in recesses in the insertion slot, the support bars are urged by the coil spring to be inserted into the insertion slot, and the protrusions axially engage in the recesses, whereupon the plug and the socket are locked together. When the coupling sleeve is pulled back against the bias of the coil spring, the support bars are withdrawn out of the insertion slot to allow the plug to be pulled out of the socket.

Abstract: A small-sized switch has a casing in which a movable contact member engages a first terminal and extends toward a second terminal having a fixed contact. The movable contact member includes an integral arcuate leaf spring extending from the end adjacent to the second contact toward the first contact, the movable contact member having a movable contact. An actuator is mounted on the casing for movement into and out of the casing. The switch also has a rocker pivotably disposed in the casing and held in engagement with the actuator. The leaf spring has a free end engaging the rocker. When the actuator is moved into or out of the casing, the rocker is turned thereby to cause the portion thereof engaging the leaf spring to traverse a line passing through the portion of the movable contact member engaging the first terminal and the movable contact, whereupon the movable contact on the movable contact member is snapped into or out of contact with the fixed contact on the second terminal.