摘要:
An object of the present invention is to provide a germanium laser diode that can be easily formed on a substrate such as silicon by using a normal silicon process and can emit light efficiently. A germanium light-emitting device according to the present invention is a germanium laser diode characterized in that tensile strain is applied to single-crystal germanium serving as a light-emitting layer to be of a direct transition type, a thin semiconductor layer made of silicon, germanium or silicon-germanium is connected adjacently to both ends of the germanium light-emitting layer, the thin semiconductor layer has a certain degree of thickness capable of preventing the occurrence of quantum confinement effect, another end of the thin semiconductor layer is connected to a thick electrode doped with impurities at a high concentration, the electrode is doped to a p type and an n type, a waveguide is formed so as not to be in direct contact with the electrode, and a mirror is formed at an end of the waveguide.
摘要:
A method of manufacturing a field effect transistor, which has high alignment accuracy between a gate electrode and source and drain electrodes and can provide a transparent device at a low cost. Since a patterned light blocking film is formed on the rear side of a substrate and used as a photomask for forming a gate electrode pattern and a source and drain electrode pattern on the front side of the substrate, the number of photomasks is reduced, and self-alignment between the gate electrode and the source and drain electrodes is carried out, thereby improving the alignment accuracy of these electrodes. Thereby, a method of manufacturing a high-accuracy low-cost field effect transistor can be provided.
摘要:
The present invention provides a personal information management system, a personal information management program and a personal information protecting method capable of storing personal information in consideration of security protection and facilitating utilization of the stored information. A personal information management system for handling personal information has a function of connection to a personal information dispersion management server that provides functions of encrypting personal information by the secret sharing scheme and decrypting the encrypted personal information with an index key for decrypting. The system has a search keyword management database storing the index key for decrypting and a personal information managing apparatus. When a request for storing personal information requiring security protection is generated, the personal information is divided and stored in the personal information dispersion management server, and the personal information is stored so as to be associated with the index key for decrypting into the search keyword management database.
摘要:
Capacity-gate voltage characteristics of a field-effect transistor having plural gates are measured against a voltage change in each one of the gates for an inverted MOSFET and for an accumulated MOSFET, respectively. These measurements together with numerical simulations provided from a model for quantum effects are used to determine flat band voltages between the plural gates and a channel. Next, an effective normal electric field is calculated as a vector line integral by using a set of flat band voltages for the measured capacity as a lower integration limit. Lastly, mobility depending on the effective normal electric field is calculated from current-gate voltage characteristic measurements and capacity measurements in a source-drain path, and the calculated mobility is substituted into an equation for a current-voltage curve between source and drain.
摘要:
When a thin film transistor is manufactured by using a printing method, the precision of alignment between a first electrode and a second electrode becomes a problem. If it is manufactured by using photolithography, a photomask for each layer is necessary, resulting in the cost being increased. The essence of the present invention is that not only processing the gate shape is carried out over the substrate by using a resist pattern formed by exposing using a photo-mask for the gate pattern but also processing the source-drain electrodes is carried out by lifting-off. As a result, alignment between the source-drain electrode and the gate electrode is carried out.
摘要:
A transmission device transmits differential signals that are to be output, in the form of current signals via first and second output terminals. A first switching transistor and a first output transistor are serially connected between the grounded terminal, which is set to a fixed electric potential, and the first output terminal. A second switching transistor and a second output transistor are serially connected between the grounded terminal and the second output terminal. First and second bias transistors are provided in parallel with the first and second switching transistors, and generate a predetermined bias current. A pair of differential signals, which are to be transmitted, are input to the gates of the first and second switching transistors. The gates of the first and second output transistors are biased at a predetermined first voltage.
摘要:
A sender device 1 stores, in header information about image information, information indicating that attribute information and image data rearranged in sequence, and produces image information by means of storing attribute information and image data in a predetermined sequence. The thus-produced image information is sent to a receiver device 2 by way of a network line 3. When receipt of image information is initiated, the receiver device 2 refers to the header information, thereby determining presence/absence, in the header information, of information indicating that attribute information and image data are stored in a predetermined sequence. When it has been determined that attribute information and image data are arranged in a predetermined sequence, image data included in the received image information are immediately decompressed, and the thus-decompressed image data are output in the form of a record or display.
摘要:
An exhaust gas purifying system reliably detects an amount of accumulated particulates, lengthens forced regeneration intervals, and improves fuel efficiency. The exhaust gas purifying system comprises: a particulate filter 22 disposed in an exhaust system of an internal combustion engine 2 and collecting particulates from exhaust gas, and an NO2 generating unit 21 upstream of or in the particulate filter 22; a discharged particulate amount calculating unit A1 calculates an amount Me of discharged particulates on the basis of an excess air ratio λ; a burnt particulate amount calculating unit A2 calculates an amount Mb of burnt particulates on the basis of the temperature of exhaust gas in front of the particulate filter or the temperature of the particulate filter; and a particulate accumulation amount calculating unit calculates an amount Ma of accumulated particulates on the basis of the amount Me of discharged particulates or the amount Mb of burnt particulates.
摘要:
In a packing container for an electronic instrument, a pair of tubular shaped bottom cushioning portions is formed by bending a pair of inner bottom flaps several times, and a pair of tubular shaped top cushioning portions is formed by bending a pair of inner top flaps several times. Each of the cushioning portions has a reentrant formed by bending side walls thereof inward to the tubular shape, to which a part of electronic instrument is fitted. The bottom cushioning portions and the top cushioning portions are surface contacted with each other for reinforcing the strength of the container in height direction. Each cushioning portion further has a reinforcing board tightly contacting with the side board for reinforcing the side board.