Itasaka
Masafumi Itasaka, Komatsushima-Shi JP
Patent application number | Description | Published |
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20140339587 | SEMICONDUCTOR LIGHT EMITTING ELEMENT AND METHOD OF MANUFACTURING THE SAME - A semiconductor light emitting element having: a semiconductor laminated body; a full surface electrode containing an Ag provided on an upper surface of the p-type semiconductor layer; a cover electrode that covers a surface of the full surface electrode, is provided to contact on the upper surface of the p-type semiconductor layer at an outer edge of the full surface electrode, and is made of an Al-based metal material; a p-side electrode that is provided on a portion of a surface of the cover electrode; a metal oxide film that covers other surfaces of the cover electrode and contains an oxide of a metal material forming the cover electrode; and an insulation film that is made of an oxide and covers a surface of the metal oxide film, is provided. | 11-20-2014 |
Yosuke Itasaka, Chino JP
Patent application number | Description | Published |
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20140091865 | OSCILLATION CIRCUIT, ELECTRONIC APPARATUS, AND MOVING OBJECT - An oscillation circuit is connected to a resonator element (crystal resonator) and oscillates a resonator element to output an oscillation signal. The oscillation circuit includes an amplification element (inverter), and a set of variable capacitive elements having at least two variable capacitive elements, which are connected to an oscillation loop from an output to an input of the amplification element and the capacitance values thereof are controlled with potential differences between reference voltages and a variable control voltage. In each variable capacitive element of a set of variable capacitive elements, the common control voltage is applied to one terminal, and the reference voltage which differs between the variable capacitive elements is input to the other terminal. | 04-03-2014 |
20140091868 | OSCILLATION CIRCUIT, SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE, VIBRATING DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT - An oscillation circuit includes a first variable capacitance part which includes a first variable capacitance element whose capacitance is controlled on the basis of a potential difference between a first control voltage and a first reference voltage, and is connected to the oscillation circuit, a second variable capacitance part which includes a second variable capacitance element whose capacitance is controlled on the basis of a potential difference between a first control voltage and a second reference voltage, and is connected to the oscillation circuit. If composite capacitance in the first variable capacitance part excluding the first variable capacitance element is first composite capacitance, composite capacitance in the second variable capacitance part excluding the second variable capacitance element is second composite capacitance, and if the second composite capacitance is greater than the first composite capacitance, the second variable capacitance element having capacitance greater than the first variable capacitance element is used. | 04-03-2014 |
Yosuke Itasaka, Tatsuno JP
Patent application number | Description | Published |
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20140091872 | OSCILLATOR CIRCUIT, VIBRATORY DEVICE, ELECTRONIC APPARATUS, MOVING OBJECT, METHOD OF ADJUSTING VIBRATORY DEVICE, AND SENSITIVITY ADJUSTMENT CIRCUIT - An oscillator circuit includes a terminal T1, a terminal T2, a variable capacitance element having one end connected to the terminal T1, and a capacitance value varying in accordance with a frequency control signal, a variable capacitance element having one end connected to the terminal T2, and a capacitance value varying in accordance with the frequency control signal, a load capacitance circuit connected to the terminal T1, and a load capacitance circuit connected to the terminal T2, and oscillates a resonator element at a frequency corresponding to the frequency control signal. The oscillator circuit is capable of adjusting the capacitance values of the load capacitance circuits, a reference voltage (the electrical potential of the terminal T1), and a reference voltage (the electrical potential of the terminal T2) in accordance with configuration information. | 04-03-2014 |
20150084711 | OSCILLATION CIRCUIT, ELECTRONIC APPARATUS, MOVING OBJECT, AND METHOD FOR MANUFACTURING OSCILLATION CIRCUIT - An oscillation circuit includes an oscillation amplifier circuit that causes an oscillating element to oscillate to generate an oscillation signal, and a correction circuit connected with the oscillation amplifier circuit. At least a power supply voltage is input to the oscillation amplifier circuit. The oscillation amplifier circuit has a frequency variation characteristic that the frequency of the oscillation signal varies in response to variations in the power supply voltage. The power supply voltage is input to the correction circuit. The correction circuit corrects the frequency variation characteristic by using variations in the power supply voltage. The correction circuit may include a first variable capacitance element, and the first variable capacitance element may have a capacitance-voltage characteristic by which the frequency variation characteristic is reduced. | 03-26-2015 |