Patent application number | Description | Published |
20090189588 | Power supply circuit having resistance element changing its resistance value to limit current flowing to capacitive load - A power supply circuit includes a control circuit which outputs a control signal when an in-rush current flows and a power-supply-resistance control circuit which supplies a current to a capacitive load. The power-supply-resistance control circuit, provided in the current path between a power supply and the capacitive load, increases the resistance of the current path in response to the control signal and reduces the resistance of the current path in response to a stop page of the control signal, whereby the control signal is output or stopped so that the in-rush current is suppressed to a value smaller than or equal to a given value. | 07-30-2009 |
20090259902 | Semiconductor device - Provided is a semiconductor device that can be reduced in size while variation in shape among circuit patterns is reduced. The semiconductor device includes multiple circuit patterns and first dummy patterns. The multiple circuit patterns are disposed at regular intervals, and are used as part of the circuit. The multiple circuit patterns consist of two outermost circuit patterns and the other inner circuit patterns. The first dummy patterns are disposed on outer sides of the two outermost circuit patterns, respectively. The distance between each of the outermost circuit patterns and the corresponding first dummy pattern is equal to a distance between any adjacent two of the circuit patterns. A width of each of the first dummy patterns is smaller than a width of any of the circuit patterns, and is equal to a minimum design rule width, for example. | 10-15-2009 |
20100085111 | Charge pump-type voltage booster circuit and semiconductor integrated circuit device - A booster circuit includes first and second transistors, a first capacitor, a first drive circuit, a second capacitor, a first controller, and a second controller. The first and second transistors are connected in series between a first voltage and a second voltage. One end of the first capacitor is connected to a connection node between the first transistor and the second transistor. The first drive circuit boosts the voltage at the other end of the first capacitor. The second capacitor is connected between the second voltage and a reference voltage. The first controller controls conduction/non-conduction of the first transistor. The second controller inputs any of the first voltage and the second voltage to the second transistor, and thereby controls conduction/non-conduction of the second transistor. The boost circuit is supplied with the reference voltage, a supply voltage, and a boost clock signal, and generates the second voltage by boosting the supply voltage. | 04-08-2010 |
20100265241 | Display apparatus using power supply circuit - A power supply circuit for a display apparatus, includes: a voltage boosting circuit configured to boost up an input voltage based on a voltage boosting factor to output a boosted output voltage; a voltage detecting circuit configured to compare a voltage level of a power supply voltage to which the input voltage is related and a predetermined voltage level; and a control circuit configured to output one of a first voltage boosting factor and a second voltage boosting factor as the voltage boosting factor to the voltage boosting circuit based on the comparison result. The control circuit changes the voltage boosting factor during a blanking period in a display panel. | 10-21-2010 |
20110057705 | SEMICONDUCTOR APPARATUS AND BREAKDOWN VOLTAGE CONTROL METHOD OF THE SAME - A semiconductor apparatus operates based on a first voltage, a second voltage lower than the first voltage, and a third voltage in between the first and second voltages, and includes an output circuit including at least one transistor where a signal having an amplitude ranging from the second to first voltages is input to a gate, and a control circuit that generates a first control signal controlling a gate voltage of a transistor included in the output circuit, a second control signal controlling a voltage in a back-gate region of the transistor, and a third control signal controlling a voltage in a deep well region. The control circuit sets a voltage difference between the first and second control signals to be equal to or smaller than the larger one of a voltage difference between the first and third voltages and a voltage difference between the second and third voltages. | 03-10-2011 |