Patent application number | Description | Published |
20110007063 | DRIVING CIRCUIT AND DRIVING METHOD - A driving circuit includes: output buffers provided to drive first and second groups of data lines, which are connected with pixels of a display panel, with drive voltage signals supplied to input terminals of the output buffers, respectively; first and second common portions; and a first short-circuiting section provided for each of the data lines of the first group to connect the input terminal of a corresponding one of the output buffers for the first group of data lines to the first common portion in response to a first connection control signal. A second short-circuiting section is provided for each of the data lines of the second group to connect the input terminal of a corresponding one of the output buffers for the second group of data lines to the second common portion in response to a second connection control signal. | 01-13-2011 |
20110057922 | DRIVE DEVICE AND DISPLAY DEVICE - A drive device according to the present invention includes a plurality of output amplifier circuits that are connected in parallel, a bias wire that supplies a bias voltage from a bias voltage supply source to the plurality of output amplifier circuits, a power supply wire that supplies a power supply voltage from a power supply voltage supply source to the plurality of output amplifier circuits, and a correction unit that superposes an offset voltage on the bias voltage so that a voltage difference between the power supply voltage and the bias voltage supplied to the plurality of output amplifier circuits is to be desirable. | 03-10-2011 |
20110148945 | D/A CONVERTER CIRCUIT AND ITS VOLTAGE SUPPLY CONTROL METHOD - A DAC includes a DAC unit that selects one of a plurality of selection voltages according to an input digital signal, and outputs the selected selection voltage as an analog signal, a first power-supply voltage terminal through which a first power-supply voltage is supplied to a first terminal of a transistor constituting the DAC unit upon power-up of the DAC unit, and a voltage supply control unit that detects a potential difference between the first power-supply voltage and a second voltage used to generate the selection voltages, outputs a voltage corresponding to the first power-supply voltage to a second terminal of the transistor constituting the DAC unit when the potential difference is larger than a predetermined value, and outputs a voltage corresponding to the second voltage to the second terminal of the transistor constituting the DAC unit when the potential difference is smaller than the predetermined value. | 06-23-2011 |
20110204497 | Semiconductor integrated circuit and method for manufacturing the same - A semiconductor integrated circuit having a semiconductor chip mounted over a tape- or film-like substrate, the semiconductor integrated circuit having a higher strength against bending, as well as a method for manufacturing the semiconductor integrated circuit, are disclosed. The semiconductor integrated circuit comprises a bendable tape-like substrate, the tape-like substrate including external terminals, internal terminals provided for coupling to a rectangular semiconductor chip, and wiring lines for coupling the internal terminals and the external terminals with each other; and a reinforcing member for reinforcing the semiconductor chip over the tape-like substrate in a longitudinal direction of the semiconductor chip, the semiconductor chip and the reinforcing member being sealed with resin. | 08-25-2011 |
Patent application number | Description | Published |
20090212659 | ELASTIC BOUNDARY WAVE DEVICE - An elastic boundary wave device includes a first medium with piezoelectricity, an electrode exciting an elastic wave and provided on the first medium, a second medium made of a different material from the first medium and provided on the first medium to cover the electrode, and a sound absorbing portion provided on the second medium. | 08-27-2009 |
20090267707 | ELASTIC WAVE DEVICE - An elastic wave device is described which includes a piezoelectric substrate, comb-shaped electrodes having teeth electrodes that are disposed so as to face each other on the piezoelectric substrate, a non-overlapping area in which the teeth electrodes of the comb-shaped electrodes do not overlap each other, and a overlapping area in which the teeth electrodes overlap each other and the velocity of sound is higher than that in the non-overlapping area. | 10-29-2009 |
20100141088 | ELASTIC BOUNDARY WAVE DEVICE - An elastic boundary wave device of the present invention includes a plurality of elastic boundary wave elements. The elastic boundary wave elements each include a piezoelectric material layer, an electrode disposed over the piezoelectric material layer, a first dielectric layer formed over the piezoelectric material layer so as to cover the electrode, and a second dielectric layer formed over the first dielectric layer. An acoustic velocity of the second dielectric layers is faster than an acoustic velocity of the first dielectric layers, and the acoustic velocity of the second dielectric layer of at least one elastic boundary wave element from among the plurality of elastic boundary wave elements is different from the acoustic velocity of the second dielectric layer of another of the elastic boundary wave elements. This enables improving the degree of suppression in use as a filter in the elastic boundary wave device. | 06-10-2010 |
20100188173 | ACOUSTIC WAVE DEVICE, TRANSMISSION APPARATUS, AND ACOUSTIC WAVE DEVICE MANUFACTURING METHOD - A first acoustic wave device includes a second acoustic wave device. The second acoustic wave device includes a substrate made of a piezoelectric material, a pair of interdigital electrodes formed on the substrate, each of the intergidital electrodes including a plurality of electrode fingers, and a adjustment medium. The adjustment medium includes at least a single layer and is formed on at least a part of the pair of the intergidital electrodes. The adjustment medium further includes a thick portion and a thin portion being null or thinner than the thick portion, an area of the thick portion opposed to a region being determined according to a predetermined characteristic value, the area including the intergital electrodes and a plurality of spaces between the electrode fingers adjacent each other. | 07-29-2010 |
20100219906 | ACOUSTIC WAVE DEVICE, DUPLEXER, COMMUNICATION MODULE, COMMUNICATION APPARATUS, AND MANUFACTURING METHOD FOR ACOUSTIC WAVE DEVICE - An acoustic wave device includes a piezoelectric substrate, interdigital electrodes arranged on the piezoelectric substrate, a first dielectric element arranged between the interdigital electrodes, a second dielectric element that covers the interdigital electrodes and the first dielectric element, and an adjustment element that has been formed on the first dielectric element. The adjustment element has been formed from a material whose specific gravity is greater than that of the first dielectric element and that of the second dielectric element. | 09-02-2010 |
20100244624 | ACOUSTIC WAVE DEVICE AND METHOD OF PRODUCING THE SAME - A method of producing an acoustic wave device includes: forming an interdigital electrode | 09-30-2010 |
20110204994 | BOUNDARY ACOUSTIC WAVE DEVICE AND COMMUNICATION EQUIPMENT - A boundary acoustic waves device includes a piezoelectric substrate ( | 08-25-2011 |
Patent application number | Description | Published |
20120313483 | ACOUSTIC WAVE DEVICE - An acoustic wave device includes a substrate, a dielectric film formed on the substrate and a pair of IDT electrodes opposing each other provided between the substrate and the dielectric film. At least one of the substrate and the dielectric film is piezoelectric. The IDT electrodes each include an electrode finger that extends in at least one direction. A film thickness of the dielectric film changes in a gap portion between a tip of the electrode finger of one of the IDT electrodes and the other opposing IDT electrode in the direction of extension of the electrode finger. | 12-13-2012 |
20130093537 | ACOUSTIC WAVE DEVICE - An acoustic wave device includes: an electrode that is located on a substrate and excites an acoustic wave; and an oxide silicon film that is doped with an element and provided so as to cover the electrode, wherein a normalized reflectance obtained by normalizing a local maximum value of a reflectance when a light is caused to enter an upper surface of the oxide silicon film doped with the element by a reflectance when a light having a wavelength at the local maximum value is caused to enter an upper surface of the substrate directly is equal to or larger than 0.96. | 04-18-2013 |
20130099630 | ACOUSTIC WAVE DEVICE - An acoustic wave device includes: an electrode that excites an acoustic wave and is located on a substrate; and a silicon oxide film that is located so as to cover the electrode and is doped with an element or molecule displacing O in a Si—O bond, wherein the element or molecule is F, H, CH | 04-25-2013 |
20130106536 | ACOUSTIC WAVE DEVICE AND MODULE | 05-02-2013 |