Patent application number | Description | Published |
20100206632 | Connection Structure, Power Module and Method of Manufacturing the Same - In ultrasonic bonding of a metal terminal to a substrate pad, a thin buffer metal layer which is formed of a soft metal or a highly slidable metal is interposed between a terminal edge and a pad so as to prevent direct contact between an end of the terminal and the pad upon bonding. This makes it possible to prevent abrasion and a crack in the pad at the end of the terminal caused by pressure and an ultrasonic wave upon the ultrasonic bonding. This makes it possible to realize a compact bonded structure with high reliability. | 08-19-2010 |
20110058342 | Semiconductor Device - An object of the present invention is to provide a semiconductor device having a small-sized, thin, and high heat-dissipating multilayer frame mounting structure. To achieve the object, the invention provides a semiconductor device having a multilayer frame obtained by stacking a plurality of lead frames on which electronic parts are mounted and sealing the stack with a resin. An interlayer distance between a lead frame on which an electronic part is mounted and a lead frame which is stacked above the lead frame and on which an electronic part is mounted is shorter than a distance from a face of the lead frame to a top face of the electronic part. | 03-10-2011 |
20110237001 | SEMICONDUCTOR CHIP USED FOR EVALUATION, EVALUATION SYSTEM, AND REPAIRING METHOD THEREOF - A technique for evaluating a semiconductor chip is provided. The semiconductor chip is mounted on a mount substrate, the semiconductor chip laminating on one surface of a silicone substrate, at least any of a metal wiring film | 09-29-2011 |
Patent application number | Description | Published |
20090103767 | SPEAKER, IMAGE ELEMENT PROTECTIVE SCREEN, CASE OF TERMINAL AND TERMINAL - Arrangement of an internal component (not shown) arranged in the vicinity of the top side is different from that of the hinge side of an image element protective screen ( | 04-23-2009 |
20100038998 | PIEZOELECTRIC ACTUATOR AND ELECTRONIC APPARATUS - Piezoelectric actuator ( | 02-18-2010 |
20100054506 | PIEZOELECTRIC SPEAKER AND ELECTRONIC APPARATUS WITH PIEZOELECTRIC SPEAKER - Provided is a piezoelectric speaker ( | 03-04-2010 |
20100086149 | ACOUSTIC PROCESSING SYSTEM AND METHOD FOR ELECTRONIC APPARATUS AND MOBILE TELEPHONE TERMINAL - An acoustic processing system for an electronic device includes: an equalizer processor which boosts or cuts a digital signal which has been subjected to an acoustic process for each of frequency components; a low-pass filter which extracts a low-range signal from the signal from the equalizer processor and outputs the signal; a high-pass filter which extracts a high-range signal from the signal from the equalizer processor and outputs the signal; a high-frequency compressor which compresses the high-range signal; an adder which generates an addition of the low-range signal and the compressed high-range signal; and a speaker which outputs a sound in accordance with the addition of the signal. | 04-08-2010 |
20100219722 | PIEZO-ELECTRIC ACTUATOR AND ELECTRONIC DEVICE - Piezo-electric actuator | 09-02-2010 |
20100226513 | AUDIO CIRCUIT - An object is to provide an audio circuit in which flow of excessive current through a capacitive speaker and a drive circuit thereof can be prevented while degradation of sound quality of high-pitched tones is suppressed. The audio circuit for driving a capacitive speaker includes: a weighting circuit for performing weighting in conformity with frequency components of an audio signal; and a signal-voltage limiting compression circuit for compressing a signal, which is input to the drive amplifier or which has been output from the drive circuit, at a prescribed compression ratio in accordance with a difference voltage between the output signal of the weighting circuit and a preset threshold voltage when the weighted signal exceeds the threshold voltage. Alternatively, the audio circuit is provided with a signal-voltage limiting compression circuit for passing, with amplitudes unchanged, signal components below a prescribed frequency contained in the signal reproduced by the capacitive speaker and compressing amplitudes of signal components not less than the prescribed frequency at a prescribed compression ratio. | 09-09-2010 |
20100246863 | PIEZOELECTRIC ACOUSTIC DEVICE AND ELECTRONIC APPARATUS - A piezoelectric acoustic device comprises: at least two piezoelectric actuators; a support body that supports the at least two piezoelectric actuators; and a signal input unit that drives the at least two piezoelectric actuators at respective arbitrary times. At least one pair of piezoelectric actuators among the at least two piezoelectric actuators is arranged in such a manner that their sound radiation surfaces face each other with a predetermined gap. | 09-30-2010 |
20120119617 | PIEZOELECTRIC ACTUATOR AND AUDIO COMPONENTS - One object of the present invention is to an achieve increase of amplitude of vibrations and/or flattening of frequency dependence of the amplitude of a piezoelectric actuator. Piezoelectric actuator ( | 05-17-2012 |