Abstract:
본 발명은 적외선 감지용 픽셀 및 이의 제조 방법에 관한 것으로, 볼로미터 구조체의 대칭적 적층 구조를 구현함으로써 스트레스에 둔감한 적외선 감지용 픽셀 및 이의 제조 방법을 제공한다. 이를 위하여, 본 발명의 일실시 예에 따른 적외선 감지용 픽셀은, 내부에 신호 취득 회로(Read-Out Integrated Circuit; ROIC)가 포함되어 있으며, 적외선 반사를 위한 반사층이 적층된 기판; 상기 기판으로부터 간격을 두고 형성되며, 온도 감응형 저항체, 상기 온도 감응형 저항체의 일면에 패턴을 가지고 형성되는 제 1 금속층, 적외선을 보완적으로 흡수하기 위하여 상기 온도 감응형 저항체의 타면에 상기 제 1 금속층과 상보적인 패턴으로 형성되는 제 2 금속층 및 상기 온도 감응형 저항체와 상기 제 1 금속층 사이에 형성된 절연층을 포함하는 볼로미터 구조체; 및 상기 제 1 금속층 및 상기 제 2 금속층에서 흡수된 적외선에 따른 상기 온도 감응형 저항체의 저항 변화를 상기 제 2 금속층으로부터 입력받아 상기 신호 취득 회로로 전달하는 금속 패드를 포함한다. 그럼으로써, 향상된 응답도를 기대할 수 있으며, 스트레스에 강한 구조 및 간단한 구조를 구현할 수 있고, 이로 인한 공정 수율의 향상을 도모할 수 있고, 그 부피를 줄임으로써 응용되는 제품의 부피, 무게 및 가격 등의 감소 효과를 기대할 수 있다. 볼로미터, 적외선 센서, 온도 감응 저항체
Abstract:
PURPOSE: An interface circuit for a static capacitive touch-sensitive sensor is provided to simultaneously obtain the high sensitivity and the analog digital conversion characteristic by arranging a complementary metal oxide semiconductor oscillator, a logic gate, and a D-flipflop in the circuit. CONSTITUTION: An oscillator part(110) outputs a first signal(QS') with a cycle in proportion to the change of the static capacitance of a touch-sensitive panel. A down counterpart(120) includes a plurality of serially connected first D-flipflops. Each clear input terminal of a first D-flipflop receives an enable signal. A latch part(130) includes a plurality of second D-flipflops corresponding to the first D-flipflops. The data input terminal of the second D-filpflops receive a second signal(Q1 to QN) outputted from the first D-flipflops.
Abstract:
PURPOSE: A high-sensitivity MEMS type z-axis vibration sensor and a manufacturing method thereof are provided to apply to a seismometer detecting a low frequency of a seismic wave with very little vibration quantity and low vibration speed. CONSTITUTION: A manufacturing method of a high-sensitivity mems type z-axis vibration sensor is as follows. After preparing a SOI substrate, The top silicon layer(130a) of the SOI substrate to be used as a bottom electrode is doped. A poly silicon layer(170a) to be used as a center ground electrode and an oxide film of a predetermined thickness are formed at the top of the doped top silicon layer. The poly silicon layer is doped. A sacrifice layer oxidation film(147a) of a predetermined thickness and a top electrode(190) are formed at the top of the doped poly silicon layer. An etching process is continuously performed from the silicon wafer(110) of the bottom of the SOI substrate to isolate the area to be further connected to center of mass of a center ground electrode from the doped top silicon layer. By etching the sacrifice layer oxidation film and the oxide film through the top of the top electrode, the doped poly silicon layer forms a vibration space capable of vibrating in the Z-axis direction.
Abstract:
A bolometer of a multilayer structure and a manufacturing method thereof are provided to improve an infrared absorbing ratio by widening sufficiently an infrared absorbing layer in order to obtain a high fill-factor. A semiconductor substrate(210) includes a detection circuit formed therein. A first and second meta pads are formed on an upper part of the semiconductor substrate. A sensor structure(200) is positioned at an upper part of the semiconductor substrate. A space corresponding to an infrared wavelength(lambda)/4 is formed between the sensor structure and the first and second metal pads. A body unit(250) is positioned at an upper part of the first and second metal pads. A resistance layer is formed to change a resistance according to a change of temperature in an infrared absorbing process. One supporting arm is composed of a two-layer structure having an upper layer and a lower layer in order to be electrically connected with the first and second metal pads.
Abstract:
A micro sensor for vibration measurement is provided to detect vibration easily at low power through wireless sensor network and to thereby facilitate signal processing. A micro sensor for vibration measurement comprises a substrate(160), one or more masses(110) moving in reaction to vibration, a conductor spring(120) which moves according to the movement of the mass while supporting the masses, fixed parts(130) which are connected to both ends of the conductor spring and keep the masses and the conductor spring apart from the substrate, and a resistance(140) forming a closed circuit together with the conductor spring and the fixed parts. The masses are positioned in the middle of the conductor spring. The resistance connects a magnetic body(170) which is formed on the bottom of the substrate and creates a magnetic field to the fixed parts.
Abstract:
A capacitance to time converting circuit with high resolution is provided to generate a time signal with high resolution by generating the time signal with a pulse width having amplified time difference after amplifying time difference corresponding to capacitance variation of a MEMS sensor. A capacitance to time converting circuit includes a driving signal generator(10), a capacitance difference sensor(20), a time difference amplifier(30), and a time signal generator(40). The driving signal generator generates a driving signal and applies the driving signal to the capacitance difference sensor. The capacitance difference sensor generates two sensing signals with the time difference corresponding to the capacitance variation of a MEMS(Micro Electro Mechanical System). The time difference amplifier amplifies the time difference of two sensing signals. The time signal generator generates a time signal with the pulse width corresponding to the amplified time difference.
Abstract:
A lifting device for preventing fixing of a 3D MEMS(Micro Electro Mechanical System) micro-structure is provided to remove a cleaning solution left on a substrate and a micro-structure by using a simple device without fixing the 3D MEMS micro-structure onto the substrate. A lifting device for preventing fixing of a 3D MEMS micro-structure includes a substrate(10) and micro-protrusions(20). The micro-protrusions exhaust a cleaning solution flowing from a micro-structure located thereon. The micro-protrusions are formed on the substrate and have a predetermined height. A fixing preventing material(30) is deposited on the micro-protrusions.
Abstract:
본 발명은 가스 검출용 센서 및 그를 포함하는 전자 후각 시스템을 제공한다. 본 발명에 따른 가스 검출용 센서는 가스의 존재 및 농도에 따라 저항 값이 변하는 센서 물질을 포함하고 상기 가스의 존재 및 농도에 따른 센싱 저항 값의 변화를 측정하는 센싱부; 상이한 저항 값을 갖는 복수의 기준 저항을 포함하고 상기 복수의 기준 저항을 이용하여 상기 센싱부의 초기 센싱 저항 값과 매칭되는 기준 저항 값을 자동으로 설정하는 저항 매칭부; 및 상기 센싱부의 저항 값 및 상기 설정된 기준 저항 값의 차이를 검출하는 저항차 검출부;를 포함하고, 상기 센싱부, 저항 매칭부 및 저항차 검출부는 일체형으로 형성된 것을 특징으로 한다. 본 발명에 따르면, 초기 센서 출력 값을 저항 매칭 블록을 통해 자동으로 초기화(출력값 = 0)하여, 센서의 가스 반응에 대한 정확한 출력값을 나타내고, 시스템을 안정화 시켜, on-chip 프로세스에 의해 외부 노이즈에 대한 강인함을 가질 수 있다. 전자 후각, 가스 검출, 센서, 가변 저항, 일체형
Abstract:
Nucleic acid nanostructures and a fabrication method thereof are provided to produce sensors for detecting gases, chemical substances or biological materials by using the nucleic acid having quadruplex structure, and be used in devices having local surface plasmon properties. The nucleic acid nanostructure comprises: a substrate; a nucleic acid having quadruplex structure fixed perpendicularly to the substrate; a metal ion present within a unit lattice consisting of 8 bases of the nucleic acid having quadruplex structure; and a nanoparticle located at the end of the nucleic acid having quadruplex structure, wherein the glass is made of metal, glass, semiconductor wafer, quartz or plastic; the nucleic acid having quadruplex structure consists of 4 nucleic acid strands comprising the nucleotide sequences of SEQ ID NO:1 to SEQ ID NO:3 aligned in parallel or reverse parallel each other; the metal ion is Na^+, K^+, Mg^2+, Ca^2+, Mn^2+, Ni^2+, Cd^2+, Co^2+ or Zn^2+; and the nanoparticle is composed of Au, Ag, ZnS, CdS, CdSe, SiO2, SnO2, TiO2, GaAs or InP. The fabrication method of the nucleic acid nanostructure comprises the steps of: introducing nucleic acids on the substrate; forming the nucleic acid having quadruplex structure from the introduced nucleic acids; and binding a nanoparticle to the nucleic acid having quadruplex structure.
Abstract:
본 발명은 폴리머 디스크를 이용한 유체가열 제어장치에 관한 것으로, 유체를 일정한 유량으로 배출하기 위한 펌프와, 상기 펌프로부터 배출된 유체를 주기적으로 온도변화되도록 이송시키기 위하여 폴리머 디스크를 포함하는 유체가열모듈과, 상기 유체가열모듈의 온도를 제어하기 위한 제어기를 포함함으로써, DNA증폭과 같은 생화학적 반응을 위한 미소유체소자에 응용될 수 있을 뿐만 아니라 유체구동방식이 간단하며, 가격이 저렴하면서 다중 제작이 쉬운 폴리머를 적용하여 폴리머 디스크를 일회용으로 사용할 수 있는 효과가 있다. 유체, 제어기, 펌프, 폴리머 디스크, 나선형 채널, 주기적 가열, 가열블럭