摘要:
A high voltage semiconductor device such as a gate turn-off thyristor, reduces surface field concentration of a main P-N junction part and attains withstand voltage increase. In a semiconductor device which has a first conductivity type low-resistance layer, a first conductivity type high-resistance layer arranged adjacently to the low-resistance layer and a second conductivity type low-resistance layer arranged adjacently to the first conductivity type high-resistance layer to hold the first conductivity type high-resistance layer with the first conductivity type low-resistance layer and is formed in a plate shape while its outer periphery is so bevelled that sectional area increases from the first conductivity type low-resistance layer toward the first conductivity type high-resistance layer and from the second conductivity type low-resistance layer toward the first conductivity type high-resistance layer respectively, chamfers or boundary surfaces of a prescribed radius of curvature were formed on boundary parts between bevelled surfaces and an outer periphery surface formed on the outer peripheral part.
摘要:
A light source device for a liquid crystal projector in which it is possible to prevent distinct appearance of a shadow of the conducting wiring of a lamp on a screen, even if an integrator lens is used, is achieved according to the invention by the fact that, in a light source device which has a metal halide lamp with bilateral sealed terminations in which seal areas are joined in one piece to two ends of an arc tube, and a concave reflector, in which one of the seal areas of the lamp is installed and held in a base opening of the concave reflector, and in which the other seal area extends in toward the front opening of the concave reflector, by conducting wiring connected to the outer lead pin which projects from the seal area toward the front opening of the concave reflector being positioned running toward the arc tube in a manner resting directly on this seal area, and then being drawn out in the vicinity of the arc tube with to behind the concave reflector.
摘要:
In a plasma processing apparatus having an upper electrode and a lower electrode in a vacuum chamber, a substrate receiving face of the lower electrode is formed to have a same convex surface as a deflected face of a substrate on condition that surface of the substrate is freely supported on an circumference thereof, and a uniform pressure is applied to the back of the substrate.
摘要:
The present invention concerns an active-matrix addressed TFT substrate using a thin film transistor, a manufacturing method and an anodic oxidation method thereof, a liquid crystal display panel using the TFT substrate and a liquid crystal display equipment using the liquid crystal display panel and, more in particular, it relates to a structure and a manufacturing method which enables to improve the characteristics thereof. In the present invention, Cr or Ta is used for gate terminals, aluminum or a metal mainly composed of aluminum is used for gate bus-lines extended therefrom, gate electrodes and thin film capacitances (additional capacitance, storage capacitance) and an anodic oxidized film composed of the metal and free from defect is used for at least one of gate insulators, dielectric films of the thin film capacitances and interlayer insulation films for the intersections between the bus-lines. In a more preferred structure, the anodic oxidized film is used for all of the gate insulators, the dielectric films for the thin film capacitances and the interlayer insulation films for the intersections between the bus-lines.
摘要:
In the present invention, a portion of the outer surface of a wrapper of film unit with lens is previously constructed in a manner capable of being peeled therefrom. When the portion of the surface is removed, such as a photographic objective and a finder of the film unit with lens are exposed. Thus, photographing is possible in the state where the film unit with lens is covered with the wrapper, thereby the wrapping is efficiently used. In the present invention, peeling portion capable of being peeled may also be provided continuously through the front surface, the upper surface and the rear surface of the wrapper. When such peeling portion is peeled, the front surface of the peeling portion may be bent from the wrapper at a folding line, whereby a projecting piece may be inserted into between the peeling surface and a plane at the rear surface thereof. Thus, the peeling portion is not separated at the time of photographing and, after photographing, it may be easily pasted to its original state to be used as a protection cover thereof if an unexposed film still remains.
摘要:
A thin film phototransistor is provided having a field effect transistor structure where at least one end of the gate electrode is not overlapped with an electrode neighboring the end. Such a thin film phototransistor has: (1) a function as a photosensor and a switching function; (2) a high input impedance; (3) a voltage control function; and (4) a high photocurrent ON/OFF ratio. This thin film phototransistor can be used independently or together with a thin film transistor for picture elements of a one-dimensional or two-dimensional photosensor array, producing satisfactory results.
摘要:
A control system for a hydraulic pump in a hydraulic drive circuit includes at least one hydraulic pump whose displacement volume is variable, at least one hydraulic actuator driven by a hydraulic fluid delivered from the hydraulic pump, and a flow control valve connected between the hydraulic pump and the actuator for controlling a flow rate of the hydraulic fluid supplied to the actuator. In the control system, the target value of the differential pressure between the delivery pressure of the hydraulic pump and the load pressure of the actuator is preset, and the displacement volume is varied dependent on the deviation between the differential pressure and its target value for controlling a pump delivery rate so that the differential pressure is held at the target value. The control system further influences the change rate of the delivery pressure of the hydraulic pump with respect to the change in the displacement volume of the hydraulic pump, and determines a control gain (Ki) for the change rate of the displacement volume from the received value; and controls the displacement volume of the hydraulic pump in accordance with the control gain and the differential pressure deviation.
摘要:
A process for producing a multilayer printed wiring board, characterized in that copper surface of internal layer(s) is chemically oxidized, thereby forming a brown or black, oxidized copper surface on the internal layer board; and said oxidized copper surface of said internal layer board is treated with an acidic aqueous solution of a reducing agent containing at least one material selected from the group consisting of zinc formaldehyde sulfoxylate and sodium hypophosphite.
摘要:
A partition plate, which is used for dividing a luggage compartment of a vehicle, comprises a locking device with which the partition plate is lockably fittable to a luggage floor when either surface of the partition plate is put on the luggage floor. The locking device includes a C-shaped lock spring which nips a projecting pin of the luggage floor to lock the partition plate to the luggage floor. The spring is enlarged in diameter by the pushing of a aliding member of the locking device.
摘要:
A thin film transistor is disclosed, which comprises a gate electrode, a gate insulating layer, a semiconductor layer, a source electrode, and a drain electrode, which are disposed on a predetermined substrate, and which is so constructed that the semiconductor layer doesn't exist in any regions, to which strong electric field parallel to said substrate is applied. Besides this thin film transistor a liquid crystal display device using it is disclosed. The thin film transistor according to the present invention has a small increase in the off level current due to photo-current and it is suitable for driving pixels in the liquid crystal display device.