Patent application number | Description | Published |
20110005568 | SOLAR CELL MODULE HAVING INTERCONNECTOR AND METHOD OF FABRICATING THE SAME - A solar cell module having an interconnector and a method of fabricating the same are disclosed. The solar cell module includes a plurality of solar cells and an interconnector including a first area electrically connected to one of two adjacent solar cells of the plurality of solar cells, a second area electrically connected to the other of the two adjacent solar cells, and a third area connecting the first area to the second area. At least one of the first area and the second area of the interconnector has at least one uneven surface, and the third area of the interconnector has a substantially planarized surface. | 01-13-2011 |
20110005579 | SOLAR CELL PANEL - A solar cell panel is discussed. The solar cell panel includes a solar cell module, a support member attached to an edge of the solar cell module to support the solar cell module by elasticity of the support member, and a frame including a female type coupling unit including an upper coupling unit, a lower coupling unit, and a connection coupling unit connecting the upper coupling unit to the lower coupling unit. The support member includes an upper part, a lower part, and a connection part connecting the upper part to the lower part. An end of the lower part protrudes further than an end of the upper part toward a middle of the solar cell module. The frame supports the solar cell module by coupling the support member to the female type coupling unit. | 01-13-2011 |
20110088746 | SOLAR CELL MODULE - A solar cell module is discussed. The solar cell module includes a junction box, a solar cell panel including a plurality of strings of solar cells, each string including a plurality of solar cells that are arranged in a row and are electrically connected to one another, an interconnector for electrically connecting adjacent ones of the plurality of solar cells to one another belonging to at least one of the plurality of strings, a first adhesive member positioned between an electrode part of one of the adjacent solar cells and the interconnector, a lead wire for electrically connecting one end of the interconnector to the junction box, and a second adhesive member positioned between the interconnector and the lead wire. At least one of the interconnector and the lead wire is formed of a lead-free material containing an amount of lead equal to or less than 1,000 ppm. | 04-21-2011 |
20110139210 | SOLAR CELL PANEL - A solar cell panel is discussed. The solar cell panel includes a plurality of solar cells, each solar cell including a substrate and a plurality of back electrodes that are positioned on a back surface of the substrate that is opposite a light receiving surface, the plurality of back electrodes being spaced apart from one another by a space to expose the substrate, a conductive adhesive film including a resin and a plurality of conductive particles dispersed in the resin, and an interconnector positioned on a back surface of the conductive adhesive film that is opposite a surface that contacts the substrate. The conductive adhesive film is positioned on the back surface of the substrate that is exposed through the space. The interconnector directly contacts the conductive adhesive film. | 06-16-2011 |
20110139211 | SOLAR CELL PANEL - A solar cell panel is discussed. The solar cell panel includes a plurality of solar cells, each solar cell including a substrate and a second electrode positioned on a second surface of the substrate that is opposite a first surface of the substrate; a first conductive adhesive film including a first resin and a plurality of first conductive particles dispersed in the first resin, the first conductive adhesive film being positioned on a second surface of the second electrode that is opposite a first surface of the second electrode that contacts the substrate, and a first surface of the first conductive adhesive film that faces the second electrode entirely contacting at least one of the second surface of the second electrode and the second surface of the substrate; and an interconnector positioned on a second surface of the first conductive adhesive film that is opposite the first surface of the first conductive adhesive film. | 06-16-2011 |
20110139212 | SOLAR CELL PANEL - A solar cell panel is discussed. The solar cell panel includes a plurality of solar cells, each solar cell including a substrate, an emitter layer, and a plurality of front electrodes extending in a first direction, an interconnector that is positioned in a second direction crossing the plurality of front electrodes, and a conductive adhesive film including a resin and a plurality of conductive particles dispersed in the resin. The conductive adhesive film is positioned between the plurality of front electrodes and the interconnector in the second direction crossing the plurality of front electrodes and electrically connects the plurality of front electrodes to the interconnector. The plurality of front electrodes respectively have areas that overlap with areas of the conductive adhesive film, and the areas of the respective plurality of front electrodes are also in contact with the areas of the conductive adhesive film. | 06-16-2011 |
20110155210 | SOLAR CELL MODULE - A solar cell module includes a plurality of solar cells, a protective layer positioned on the plurality of solar cells, and a transparent member positioned on the protective layer, the transparent member protecting the plurality of solar cells, the transparent member including a first anti-reflection portion patterned on at least one of an outer surface and partially positioned in an inner surface of the transparent member, the inner surface being a surface facing the plurality of solar cells. | 06-30-2011 |
20110265849 | SOLAR CELL PANEL - A solar cell panel is discussed. The solar cell panel includes a plurality of solar cells each including a substrate, an emitter layer positioned at a light receiving surface of the substrate, and a plurality of front electrodes that are electrically connected to the emitter layer and extend parallel to one another in a first direction, an interconnector that electrically connects adjacent ones of the solar cells to each other and is positioned in a second direction crossing the front electrodes, a conductive adhesive film that is positioned between the front electrodes and the interconnector in the second direction and electrically connects the front electrodes to the interconnector, and an alignment mark indicating a bonding location of the conductive adhesive film, and positioned on the substrate. | 11-03-2011 |
20120037200 | SOLAR CELL PANEL - A solar cell panel is discussed. The solar cell panel includes a plurality of solar cells each including a substrate and an electrode part positioned on a surface of the substrate, an interconnector for electrically connecting at least one of the plurality of solar cells to another of the plurality of solar cells, and a conductive adhesive film including a resin and a plurality of conductive particles dispersed in the resin. The conductive adhesive film is positioned between the electrode part of the at least one of the plurality of solar cells and the interconnector to electrically connect the electrode part of the at least one of the plurality of solar cells to the interconnector. A width of the interconnector is equal to or greater than a width of the conductive adhesive film. | 02-16-2012 |
20120055538 | SOLAR CELL MODULE - A solar cell module is discussed. The solar cell module includes a plurality of solar cells each including a substrate and an anti-reflection layer positioned on the substrate, a protective member surrounding the plurality of solar cells, and a transparent member positioned on the protective member. The protective member is formed of a silicon resin. The anti-reflection layer includes a first anti-reflection layer positioned on the substrate and a second anti-reflection layer positioned on the first anti-reflection layer. The first anti-reflection layer and the second anti-reflection layer are formed of different materials. | 03-08-2012 |
20120103385 | SOLAR CELL PANEL AND METHOD FOR MANUFACTURING THE SAME - A solar cell panel and a method for manufacturing the same are discussed. The solar cell panel includes a plurality of solar cells each including a substrate and a plurality of electrode parts positioned on a surface of the substrate, an interconnector electrically connecting the electrode parts of adjacent ones of the plurality of solar cells to one another, and conductive adhesive films including a resin and a plurality of conductive particles dispersed in the resin. The conductive adhesive films is pressed between the electrode parts and the interconnector to electrically connect the electrode parts to the interconnector. A plurality of uneven portions are positioned on at least one of an upper surface and a lower surface of the interconnector. | 05-03-2012 |
20120152305 | SOLAR CELL MODULE HAVING INTERCONNECTOR AND METHOD OF FABRICATING THE SAME - A solar cell module having an interconnector and a method of fabricating the same are disclosed. The solar cell module includes a plurality of solar cells and an interconnector including a first area electrically connected to one of two adjacent solar cells of the plurality of solar cells, a second area electrically connected to the other of the two adjacent solar cells, and a third area connecting the first area to the second area. At least one of the first area and the second area of the interconnector has at least one uneven surface, and the third area of the interconnector has a substantially planarized surface. | 06-21-2012 |
20120260965 | SOLAR CELL MODULE - A solar cell module may include a plurality of solar cells, each solar cell including a substrate and an electrode part formed on the substrate, an interconnector electrically connecting adjacent solar cells, and a conductive adhesive film disposed between the electrode part and the interconnector, and electrically connecting the electrode part with the interconnector. The conductive adhesive film may include a resin and a plurality of conductive particles. The plurality of conductive particles may include a plurality of first particles each including a low melting point metal and a plurality of second particles each including a high melting point metal having a higher melting point than a melting point of the plurality of first particles. | 10-18-2012 |
20130220400 | SOLAR CELL MODULE - A solar cell module includes a plurality of solar cells each comprising a substrate, an emitter region placed at the substrate, and an anti-reflection region placed on the emitter region. The anti-reflection region includes a first opening region through which part of the emitter region is exposed and one or more second opening regions through which part of the emitter region is exposed. A first electrode is connected to the exposed emitter region of the first opening region through the anti-reflection region by metal plating and a first bus bar is connected to the exposed emitter region of one or more second opening regions through the anti-reflection region by metal plating. | 08-29-2013 |
20140209151 | SOLAR CELL MODULE - Discussed is a solar cell module including a plurality of solar cells including a photoelectric convertor and an electrode, a circuit wiring layer having a wiring for electrically connecting the plurality of solar cells, a barrier disposed on the circuit wiring layer, the barrier partitioning areas corresponding to the plurality of solar cells, and a sealing material for bonding and sealing the plurality of solar cells, the circuit wiring layer and the barrier. | 07-31-2014 |
Patent application number | Description | Published |
20100119947 | METHOD FOR FORMING CATHODE ACTIVE MATERIAL POWDER FOR LITHIUM SECONDARY CELL, AND CATHODE ACTIVE MATERIAL POWDER FOR LITHIUM SECONDARY CELL PREPARED USING THE METHOD - Provided are a method for forming a cathode active material powder for a lithium secondary cell, and a cathode active material powder prepared using the method. According to the method, a coating layer consisting of a combination of a water-soluble polymer and a metal oxide may be formed on the particle surface of the cathode active material, thereby forming a uniform thickness of the coating layer. Thus, the elution of manganese may be prevented, thereby improving the capacity of the cathode active material and providing excellent cycle characteristics. | 05-13-2010 |
20100135396 | IMAGE PROCESSING DEVICE - Provided is an image processing device. The image processing device includes: a plurality of operation units; and a controller unit storing an occurred bit amount to calculate a rate-distortion cost value and transmitting the occurred bit amount to each of the plurality of operation units, wherein at least one of the plurality of operation units calculates each distortion value with respect to a plurality of encoding modes and calculates each rate-distortion cost value with respect to the plurality of encoding modes using the calculated each distortion value and occurred bit amount. | 06-03-2010 |
20100139761 | DYE-SENSITIZED SOLAR CELL AND METHOD OF FABRICATING THE SAME - Provided are a dye-sensitized solar cell and a method of fabricating the same. The dye-sensitized solar cell includes a lower substrate, an upper substrate, a dielectric, a semiconductor electrode layer, a dye layer, and an electrolyte. The upper substrate is spaced from the lower substrate and has a light emitting surface facing a surface of the lower substrate and a light incident surface opposite to the light emitting surface. The dielectric is disposed on the surface of the lower substrate. The semiconductor electrode layer includes electrode dots disposed on the dielectric. The dye layer is disposed on surfaces of the electrode dots. The electrolyte is disposed between the lower substrate and the upper substrate. | 06-10-2010 |
20100146219 | MEMORY ACCESS DEVICE INCLUDING MULTIPLE PROCESSORS - Provided is a memory access device including multiple processors accessing a specific memory. The memory access device includes first and second processors, first and second transaction controllers, a memory access switch, and a memory controller. The first and second transaction controllers are connected respectively to the first and second processors. The memory access switch is connected to the first and second transaction controllers. The memory controller is connected to the memory access switch to control a memory device. Herein, if the first and second processors simultaneously access the memory device, the second processor stores an address or data in the second transaction controller while the first processor is accessing the memory device. Accordingly, the memory access device enables multiple processors, which are to simultaneously access a specific memory, to perform other operations during the standby time taken to access the specific memory. | 06-10-2010 |
20120091968 | METHOD AND APPARATUS FOR TRACKING MAXIMUM POWER POINT - Disclosed are a method and an apparatus for tracking a maximum power point. An apparatus for tracking a maximum power point according to an exemplary embodiment of the present disclosure includes: a system controller monitoring a plurality of energy sources for each predetermined period and selecting an energy source having a maximum power among the plurality of energy sources; and a maximum power tracking unit limiting an output voltage of the selected energy source to a reference voltage determined by an open circuit voltage of the selected energy source to track the maximum power point from the selected energy source and store the power of the selected energy source in a battery. | 04-19-2012 |
20120098057 | SEMICONDUCTOR DEVICE AND METHOD OF FABRICATING THE SAME - Provided are a semiconductor device and a method of fabricating the same. The method includes: forming a trench in a semiconductor substrate of a first conductive type; forming a trench dopant containing layer including a dopant of a second conductive type on a sidewall and a bottom surface of the trench; forming a doping region by diffusing the dopant in the trench dopant containing layer into the semiconductor substrate; and removing the trench dopant containing layer. | 04-26-2012 |
20120098076 | ACOUSTIC SENSOR AND METHOD OF MANUFACTURING THE SAME - Provided is an acoustic sensor. The acoustic sensor includes: a substrate including sidewall portions and a bottom portion extending from a bottom of the sidewall portions; a lower electrode fixed at the substrate and including a concave portion and a convex portion, the concave portion including a first hole on a middle region of the bottom, the convex portion including a second hole on an edge region of the bottom; diaphragms facing the concave portion of the lower electrode, with a vibration space therebetween; diaphragm supporters provided on the lower electrode at a side of the diaphragm and having a top surface having the same height as the diaphragm; and an acoustic chamber provided in a space between the bottom portion and the sidewall portions below the lower electrode. | 04-26-2012 |
20120107695 | LITHIUM RECHARGEABLE BATTERY - Provided is a lithium rechargeable battery including: a cathode plate including a cathode current collector layer and a cathode layer; an anode plate spaced from the cathode plate, the cathode plate including an anode current collector layer and an anode layer; and a polymer electrolyte disposed between the cathode plate and the anode plate, wherein at least one of the cathode layer and the anode layer includes a mixed cathode active material or a mixed anode active material. | 05-03-2012 |
20120133210 | HYBRID ENERGY HARVESTER AND PORTABLE DEVICE THE SAME - Disclosed are a hybrid energy harvester and a portable device including the same. The hybrid energy harvester according to an exemplary embodiment of the present disclosure includes: a thermoelectric/piezoelectric element part that includes a thermoelectric element layer generating a voltage by a temperature difference, and a piezoelectric element layer generating a voltage by any one of vibration, pressure and force; an energy source selection part that selects a voltage generated in the thermoelectric element layer or the piezoelectric element layer; and a voltage controlling part that stores the voltage in an energy storage device by controlling the voltage selected in the energy source selection part. | 05-31-2012 |
20120139066 | MEMS MICROPHONE - Disclosed is a micro electro mechanical system (MEMS) microphone including: a substrate; an acoustic chamber formed by processing the substrate; a lower electrode formed on the acoustic chamber and fixed to the substrate; a diaphragm formed over the lower electrode so as to be spaced apart from the lower electrode by a predetermined interval; and a diaphragm discharge hole formed at a central portion of the diaphragm. According to an exemplary embodiment of the present disclosure, attenuation generated by an air layer between the diaphragm and the lower electrode in a MEMS microphone may be effectively reduced, thereby making it possible to obtain high sensitivity characteristics and reduce a time and a cost required for removing a sacrificial layer between the diaphragm and the lower electrode. | 06-07-2012 |
20120139463 | POWER SUPPLY MODULE FOR HALL SENSORLESS BRUSHLESS DIRECT CURRENT MOTOR - Disclosed is a power supply module for a hall sensorless BLDC motor, including: a high-voltage/large-current power device t applied with high voltage/large current and including a plurality of power devices driving the hall sensorless brushless direct current (BLDC) motor; a motor driving circuit sensing and controlling a positional signal or a velocity signal of the hall sensorless BLDC motor and generating a PWM control signal for controlling the hall sensorless BLDC motor; and a power device driving circuit driving the high-voltage/large-current power device according to the PWM control signal of the motor driving circuit, wherein the high-voltage/large-current power device, the power device driving circuit, and the motor driving circuit are CMOS-integrated on the same substrate. | 06-07-2012 |
20120140597 | SECURITY MONITORING SYSTEM USING BEAMFORMING ACOUSTIC IMAGING AND METHOD USING THE SAME - Disclosed is a security monitoring method determining whether a trespasser is detected and a position of the trespasser in a set security space and monitoring sound generated at the position of the trespasser by using an acoustic image generated from acoustic signals generated by an acoustic generating device and an acoustic measuring device in an array type. An exemplary embodiment of the present disclosure provides a security monitoring system including: an acoustic generating device that generates acoustic signals; a plurality of acoustic measuring devices that receive the acoustic signals; and an acoustic image processing device that generates an acoustic image using a beamforming algorithm from the acoustic signals received in the plurality of acoustic measuring devices and determines a position of a trespasser by comparing the acoustic image after the trespasser is detected with the acoustic image before the trespasser is detected. | 06-07-2012 |
20120148073 | PIEZOELECTRIC SPEAKER - Disclosed is a piezoelectric speaker including: a piezoelectric layer that converts electrical signals into oscillation and outputs sound; an electrode that is formed on a top or a bottom of the piezoelectric layer to apply the electrical signals to the piezoelectric layer; an acoustic diaphragm that is made of a hetero material including a first acoustic diaphragm and a second acoustic diaphragm and is attached to the bottom of the piezoelectric layer on which the electrode is formed; and a frame attached in a form enclosing a side of the acoustic diaphragm. | 06-14-2012 |
20120150776 | ADAPTIVE MULTIMEDIA PROCESSOR AND ADAPTIVE DATA PROCESSING METHOD - Disclosed is a structure of an adaptive multimedia processor and a method for implementing an adaptive data processing algorithm. The adaptive multimedia processor includes a bit stream analyzer for analyzing bit stream information of multimedia data, and a bit stream learning device for converting multimedia data having a format which cannot be reproduced in a device, to multimedia data having a format which can be reproduced in a device, through an execution of a learning algorithm, based on an analysis by the bit stream analyzer. | 06-14-2012 |
20120161736 | APPARATUS AND METHOD FOR INITIALIZING DC-DC CONVERTER - The present disclosure relates to an apparatus and method for initializing a DC-DC converter, and can stabilize an output voltage in an initial state, and prevent malfunction of a system control through initialization and high-efficiency DC-DC converters, by converting a variable voltage into a predetermined constant voltage and generating a reset signal for initializing a constant-voltage circuit so as to initialize the DC-DC converter and a control unit composed of the constant-voltage circuit, if the converted voltage reaches a target voltage, in an initialization DC-DC interval, and then converting the variable voltage into the predetermined constant voltage and outputting the converted voltage, in a high-efficiency DC-DC interval. | 06-28-2012 |
20120268052 | MOTOR CONTROL DEVICE AND METHOD OF CONTROLLING THE SAME - A motor control device including a preprocessing portion calculating a counter electromotive force using an analog operation is provided. The motor control device may include an offset compensation portion and a counter electromotive force measuring portion. The offset compensation portion receives a three-phase current signal from the motor and compensates an offset of the three-phase current signal. The counter electromotive force measuring portion receives the compensated current signal and a three-phase voltage signal from the motor and calculates the received current signal and the received voltage signal using an analog operation to provide the calculated result. | 10-25-2012 |
20130027094 | TRIANGULAR WAVE GENERATOR AND METHOD GENERATING TRIANGULAR WAVE THEREOF - Disclosed is a triangular wave generator which includes a square wave signal generating unit configured to output a first signal transitioning to a high level from a low level via an output terminal in response to a first transition of a clock signal and to transition the first signal to a low level from a high level in response to a reset signal; a resistance unit configured to adjust a voltage level of a the square wave signal; and a capacitance unit configured to receive an output signal of the resistance unit to generate a second signal rising to a high level from a low level with a slope, to provide the reset signal to the square wave signal generating unit, and to output a triangular signal by falling the second signal to a low level from a high level with a slope. | 01-31-2013 |
20130057424 | ANALOG-DIGITAL CONVERTER AND CONVERTING METHOD USING CLOCK DELAY - The present inventive concept relates to an analog-digital converter. The analog-digital converter includes a clock generating unit generating a clock signal; a clock delay adjusting unit outputting one of a first clock signal to a Kth clock signal according to a control signal; a capacitive digital-analog converting unit outputting a difference between the analog signal and a reference signal; a comparison unit judging whether an output of the capacitive digital-analog converting unit is 0, a positive number, or a negative number, in response to an output of the clock delay adjusting unit; and an SAR logic unit transferring an output of the comparison unit to the capacitive digital-analog converting unit in response to an output of the clock delay adjusting unit and performing a successive approximation operation to output the N-bit digital signal. | 03-07-2013 |
20130094675 | MEMS MICROPHONE AND METHOD OF MANUFACTURING THE SAME - Disclosed are a MEMS microphone and a method of manufacturing the same. The MEMS microphone includes: a substrate; a rear acoustic chamber formed inside a front surface of the substrate; a vibrating plate formed on the substrate and having an exhaust hole; a fixed electrode formed on the vibrating plate; and a fixed electrode support supported by a bottom of the rear acoustic chamber and connected to the fixed electrode through the exhaust hole. | 04-18-2013 |
20130099868 | SOUND DETECTING CIRCUIT AND AMPLIFIER CIRCUIT THEREOF - Disclosed is a sound detecting circuit which includes a sensing unit configured to generate an AC signal in response to a sound pressure level of a sound signal; an amplification unit configured to amplify the AC signal; and a bias voltage generating unit configured to generate a bias voltage to be provided to the amplification unit. The bias voltage generating unit comprises a current source configured to provide a power current; and a current-voltage converting circuit configured to convert the power current into the bias voltage and to reduce a noise due to the power current. | 04-25-2013 |
20130148456 | VOLTAGE REGULATOR WITH IMPROVED LOAD REGULATION AND VOLTAGE REGULATING METHOD - Provided is a voltage supply circuit using a charge pump. The voltage supply circuit enhances charge pump output voltage fluctuation characteristics depending on load variation of a charge pump voltage generator (load regulation characteristics) when receiving an operation power supply voltage of the charge pump through a regulator. The voltage supply circuit is configured to feed back fluctuation of a charge pump output voltage to a charge pump voltage regulator. The fluctuation of the charge pump output voltage is compensated through fluctuation of an output voltage of the charge pump to active enhance the load regulation characteristics. | 06-13-2013 |
20130156069 | PROCESS INDEPENDENT TEMPERATURE SENSOR BASED ON OSCILLATOR - The inventive concept discloses a new temperature sensor structure based on oscillator which is insensitive to a process change and improves an error rate of temperature output. The temperature sensor based on oscillator compares an oscillator circuit structure insensitive to a temperature change with an oscillator circuit structure having a frequency change in proportion to a temperature change to output a relative difference between the two oscillator circuit structures and thereby it is compensated itself. In the temperature sensor based on oscillator, a problem of performance reduction due to an external environment and a process deviation of temperature sensor is improved and an output distortion and temperature nonlinearity are effectively improved. Thus, since the temperature sensor based on oscillator has a structure of high performance, low power and low cost, it can be variously used in a detection equipment of temperature environment. | 06-20-2013 |
20130185928 | ACOUSTIC SENSOR AND METHOD OF MANUFACTURING THE SAME - Provided is an acoustic sensor. The acoustic sensor includes: a substrate including sidewall portions and a bottom portion extending from a bottom of the sidewall portions; a lower electrode fixed at the substrate and including a concave portion and a convex portion, the concave portion including a first hole on a middle region of the bottom, the convex portion including a second hole on an edge region of the bottom; diaphragms facing the concave portion of the lower electrode, with a vibration space therebetween; diaphragm supporters provided on the lower electrode at a side of the diaphragm and having a top surface having the same height as the diaphragm; and an acoustic chamber provided in a space between the bottom portion and the sidewall portions below the lower electrode. | 07-25-2013 |
20130271088 | ULTRASONIC WIRELESS POWER TRANSMITTER AND RECEIVER APPARATUSES, AND METHOD FOR WIRELESS CHARGING THEREOF - Disclosed are ultrasonic wireless power transmitter and receiver apparatuses, and a method for wireless charging thereof. A method for wireless charging according to the present disclosure includes: transmitting, by an ultrasonic wireless power transmitter apparatus, an wakeup signal to an ultrasonic wireless power receiver apparatus; calculating, by the ultrasonic wireless power transmitter apparatus, a charging time according to a charging status information received from the ultrasonic wireless power receiver apparatus; generating, by the ultrasonic wireless power transmitter apparatus, an ultrasonic signal, amplifying the generated ultrasonic signal to predetermined voltage and thereafter; charging, by the ultrasonic wireless power transmitter apparatus, the ultrasonic wireless power receiver apparatus for the calculated time and thereafter; and determining, by the ultrasonic wireless power transmitter apparatus, whether secondary charging is to be performed according to a charged status information received from the ultrasonic wireless power receiver apparatus. | 10-17-2013 |
20140079254 | MEMS MICROPHONE USING NOISE FILTER - An MEMS microphone is provided which includes a reference voltage/current generator configured to generate a DC reference voltage and a reference current; a first noise filter configured to remove a noise of the DC reference voltage; a voltage booster configured to generate a sensor bias voltage using the DC reference voltage the noise of which is removed; a microphone sensor configured to receive the sensor bias voltage and to generate an output value based on a variation in a sound pressure; a bias circuit configured to receive the reference current to generate a bias voltage; and a signal amplification unit configured to receive the bias voltage and the output value of the microphone sensor to amplify the output value. The first noise filter comprises an impedance circuit; a capacitor circuit connected to a output node of the impedance circuit; and a switch connected to both ends of the impedance circuit. | 03-20-2014 |
20140091388 | SEMICONDUCTOR DEVICE AND METHOD OF FABRICATING THE SAME - Provided are a semiconductor device and a method of fabricating the same. The method includes: forming a trench in a semiconductor substrate of a first conductive type; forming a trench dopant containing layer including a dopant of a second conductive type on a sidewall and a bottom surface of the trench; forming a doping region by diffusing the dopant in the trench dopant containing layer into the semiconductor substrate; and removing the trench dopant containing layer. | 04-03-2014 |
20140152386 | ERROR AMPLIFIER HAVING CASCODE CURRENT SOURCE USING BODY BIASING - Provided is an error amplifier. The error amplifier includes: an amplifying unit receiving first and second input signals and amplifying a voltage difference between the received first and second input signals; a first voltage generating unit generating first and second driving voltages for driving the amplifying unit; a second voltage generating unit generating first and second body voltages to implement a body biasing method; a cascode current source including first to fourth PMOS transistors to provide a bias current to the amplifying unit and the first voltage generating unit; and an output unit outputting a signal of the voltage difference amplified by the amplifying unit, wherein the first and third PMOS transistors receive the first body voltage through a body terminal and the second and fourth PMOS transistors receive the second body voltage through a body terminal. | 06-05-2014 |