Abstract: Memory elements, switching elements, and peripheral circuits to constitute a nonvolatile memory are integrally formed on a substrate by using TFTs. Since semiconductor active layers of memory element TFTs are thinner than those of other TFTs, impact ionization easily occurs in channel regions of the memory element TFTs. This enables low-voltage write/erase operations to be performed on the memory elements, and hence the memory elements are less prone to deteriorate. Therefore, a nonvolatile memory capable of miniaturization can be provided.

Abstract: It is an object of the present invention to provide a goggle type display device for preventing a misalignment between a display element and an optical element. The present invention provides a goggle type display device having a display unit and an optical element wherein the display unit is integral with the optical element.

Abstract: A semiconductor film having a uniform film quality is formed through: the first step of forming a semiconductor film on a substrate; the second step of irradiating onto a part of the semiconductor film one shot or plural shots of laser light of 5 J or more in total energy and 100 nsec or more in pulse width to form a highly crystallized semiconductor film; and the third step of repeatedly performing the second step on a part of the semiconductor film different from the part of the second step while shifting relative positions of the semiconductor film and the laser light to each other. A thin film transistor using this semiconductor film as an active layer has an enhanced characteristic without variations.

Abstract: To provide a goggle type display device system that can prevent harm to user's health. If anomaly is recognized in mind and body of a user, first video signals provided from an external device stop being displayed on LCD panels and, instead, outside scenery taken by CCD image capture elements is displayed. The user may be alarmed by this about anomaly of his or her body and, further, relaxed by looking at the outside scenery presented.

Abstract: There is provided a driving circuit which is simple and has a small occupied area. A shift register circuit of the present invention includes a plurality of register circuits. Each of the register circuits includes a clocked inverter circuit and an inverter circuit. Both are connected in series with each other so that an output signal of the clocked inverter circuit becomes an input signal of the inverter circuit. Further, the register circuit includes a signal line by which an output signal of the inverter circuit is transmitted. Since a number of elements are connected to the signal line and parasitic capacitance is large, it has a high load. The shift register circuit of the present invention uses the fact that since the parasitic capacitance of the signal line is large, it has a high load.

Abstract: Memory elements, switching elements, and peripheral circuits to constitute a nonvolatile memory are integrally formed on a substrate by using TFTs. Since semiconductor active layers of memory element TFTs are thinner than those of other TFTs, impact ionization easily occurs in channel regions of the memory element TFFs. This enables low-voltage write/erase operations to be performed on the memory elements, and hence the memory elements are less prone to deteriorate. Therefore, a nonvolatile memory capable of miniaturization can be provided.

Abstract: To provide a goggle type display device system that can prevent harm to user's health. If anomaly is recognized in mind and body of a user, first video signals provided from an external device stop being displayed on LCD panels and, instead, outside scenery taken by CCD image capture elements is displayed. The user may be alarmed by this about anomaly of his or her body and, further, relaxed by looking at the outside scenery presented.

Abstract: Memory elements, switching elements, and peripheral circuits to constitute a nonvolatile memory are integrally formed on a substrate by using TFTs. Since semiconductor active layers of memory element TFTs are thinner than those of other TFTs, impact ionization easily occurs in channel regions of the memory element TFTs. This enables low-voltage write/erase operations to be performed on the memory elements, and hence the memory elements are less prone to deteriorate. Therefore, a nonvolatile memory capable of miniaturization can be provided.

Abstract: Memory elements, switching elements, and peripheral circuits to constitute a nonvolatile memory are integrally formed on a substrate by using TFTs. Since semiconductor active layers of memory element TFTs are thinner than those of other TFTs, impact ionization easily occurs in channel regions of the memory element TFTs. This enables low-voltage write/erase operations to be performed on the memory elements, and hence the memory elements are less prone to deteriorate. Therefore, a nonvolatile memory capable of miniaturization can be provided.

Abstract: An image forming apparatus including a plurality of filters for obtaining reusable toner from used toner scraped off of an image carrier. Also included is a reusable toner container for storing the reusable toner, and a toner transfer device for transferring the reusable toner stored in the reusable toner container to a developing device so that the reusable toner is reused by the developing device. The plurality of filters have a different mesh-size and are positioned in a used toner stream in an order based on the different mesh-size.

Abstract: A sheet feed device incorporated in a copier, facsimile transceiver, printer or similar image forming apparatus and capable of automatically removing a wrapping from a sheet pack inserted in the apparatus and then feeding sheets one by one.

Abstract: A copier, facsimile transceiver, printer or similar electrophotographic image forming apparatus uses a toner cartridge whose volume decreases when released a toner. A cartridge collecting section for collecting toner cartridges is lower in height than the cartridge when the cartridge is filled with a toner. The cartridge has top plate, a bottom plate and sides which are implemented by an elastic member or a film-like member. The cartridge collecting section, a waste toner tank and a photoconductive element storing section are constructed into a unit which is removable from the apparatus body.

Abstract: A vibration-proof tungsten wire which forms, in cases where the diameter of the wire is D mm and when an electric current corresponding to 90% of the fusion current value is passed therethrough for 5 minutes, a wire havinga crystal grain boundary at which bubbles of 0.3 .mu.m or less in diameter are dispersed in bubble rows with lengths of (0.39/D).sup.2 .times.3 .mu.m or more arrayed in the wire axis direction of said crystal grain boundary, and bubbles of 0.2 .mu.m or less in diameter are randomly dispersed; anda crystal grain in which bubbles of 0.3 .mu.m or less in diameter are dispersed in rows with lengths of (0.39/D).sup.2 .times.30 .mu.m or more arrayed in the wire axis direction within said crystal grain, and bubbles of 0.2 .mu.m or less are randomly dispersed;a process for preparing the same; and a tungsten filament obtained from the above-defined wire. The doped tungsten wire of this invention possesses excellent vibration-proof property on lighting as well as high reliability.