Patent application number | Description | Published |
20080248601 | Method of fusing trimming for semiconductor device - Deviation occurring in a particular region in a plane of a resistor group which constitutes a semiconductor integrated circuit is improved and a quick increase in yield is accomplished. Provided is a fuse trimming method for a semiconductor device in which circuit elements such as transistors and resistors are formed on a semiconductor wafer and which has fuse elements capable of adjusting a resistance value of the resistors by laser trimming, including a resistor correction step of correcting in the particular region of the semiconductor wafer the resistance value of the resistors based on an amount of deviation from a target value of the resistance value of the resistors. | 10-09-2008 |
20090061620 | Method of manufacturing a semiconductor device - Exuding of a interconnecting material to a substrate, which occurs because of a thinned state of and a beak in a barrier metal layer is prevented, irrespective of a laminated state of the barrier metal layer. In the present invention, a protective layer is formed on a side wall by using an insulating film or the like after the deposition of the barrier metal layer, whereby the interconnecting material can be prevented from exuding to the substrate due to influence of heat treatment such as alloying, irrespective of the laminated state of the side wall of the contact hole and the barrier metal layer. Further, the formation of the protective layer allows the side wall to be smoother to thereby improve coverage of the interconnecting material at the same time. | 03-05-2009 |
20100200952 | SEMICONDUCTOR DEVICE - Provided is a method which is capable of producing polycrystalline silicon resistors with a high ratio accuracy so that a precision resistor circuit may be designed. A semiconductor device has a structure in which an occupation area of a metal portion covering a low concentration impurity region constituting each of the polycrystalline silicon resistors is adjusted so that ratio accuracy may be further corrected after a resistance is corrected. | 08-12-2010 |
Patent application number | Description | Published |
20090185323 | OVERHEAT PROTECTION CIRCUIT - In order to provide an overheat protection circuit having a small mounting area, the overheat protection circuit includes: a resistor bridge circuit which includes: a plurality of resistors each having a temperature coefficient; an input terminal; and an output terminal; and a comparator circuit connected to the output terminal and the input terminal of the resistor bridge circuit. Parts are each provided in the vicinity of one of the plurality of resistors each having the temperature coefficient, and the comparator circuit outputs an overheat detection signal when a temperature of one of the parts is equal to or higher than an overheat detection temperature. With this structure, a large number of parts can be protected from overheating by a minimum number of overheat protection circuits. Therefore, a circuit scale becomes smaller, and hence a cost for overheat protection becomes lower. | 07-23-2009 |
20110050176 | BATTERY STATE MONITORING CIRCUIT AND BATTERY DEVICE - Provided are a battery state monitoring circuit and a battery device that are capable of reliably controlling charge by a charger even if a voltage of a secondary battery drops to around 0 V. In the battery device provided with the battery state monitoring circuit, respective gate voltages of a P-type metal oxide semiconductor (PMOS) transistor and an N-type metal oxide semiconductor (NMOS) transistor, which together form a voltage detection circuit for detecting a voltage of around 0 V of the secondary battery, are applied by a voltage dividing resistor circuit that is connected across terminals of the secondary battery. | 03-03-2011 |
20110089906 | BATTERY STATE MONITORING CIRCUIT AND BATTERY DEVICE - Provided are a battery state monitoring circuit with a small number of terminals and a battery device including the battery state monitoring circuit. An output of an overcharge detection circuit ( | 04-21-2011 |
20110101918 | BATTERY STATE MONITORING CIRCUIT AND BATTERY DEVICE - Provided are a battery state monitoring circuit capable of detecting disconnection of a battery from a power supply terminal or a ground terminal, and a battery device including the battery state monitoring circuit. The battery state monitoring circuit includes voltage detection circuits provided between the power supply terminal and an intermediate terminal and between the intermediate terminal and another intermediate terminal. For example, if a battery ( | 05-05-2011 |
20110299206 | BATTERY STATE MONITORING CIRCUIT AND BATTERY DEVICE - Provided is a battery state monitoring circuit which detects that a voltage of a secondary battery has decreased abruptly because of an overcurrent, thereby being capable of protecting a battery device from an abrupt decrease in voltage of the secondary battery caused by the overcurrent. The battery state monitoring circuit includes a voltage comparator circuit and a power supply voltage detection circuit for detecting an abrupt decrease in power supply voltage, in which the voltage comparator circuit detects a normal overcurrent while the power supply voltage detection circuit detects the abrupt decrease in power supply voltage caused by load short-circuit. | 12-08-2011 |