Abstract:
본 발명은 표면장력으로 제어되는 미세유체소자에 관한 것으로, 상부 기판 및 하부 기판이 결합되어 유체를 제어하고 반응시키는 미세유체소자에 있어서, 하부 기판은, 제1 유체 및 제2 유체가 각각 저장되는 제1 저장 챔버 및 제2 저장 챔버와, 제1 저장 챔버 및 제2 저장 챔버와 연결되는 감지 챔버와, 제1 유체 또는 제2 유체의 이동을 정지시키는 제1 유동 정지부 및 제2 유동 정지부와, 제1 유체 또는 제2 유체의 이동 속도를 감소시키는 유동 지연부와, 반응이 완료된 제1 유체 또는 제2 유체가 폐기되는 폐기 챔버 및 유체가 이동되도록 유동 지연부와 폐기 챔버 사이를 연결하는 유로를 포함하고, 상부 기판은 감지 챔버 내의 생화학반응을 측정하는 감지부를 포함하며, 제1 유체가 모세관 힘에 의해 감지 챔버로 이동하여 1차 생화학 반응이 일어나고, 소정 시간 경과 후 제2 유체가 모세관 힘에 의해 감지 챔버로 유입되면 제1 유체의 교체 및 2 차 생화학반응이 일어나는 것을 특징으로 한다. 따라서, 추가적인 장치 및 전원공급이 필요 없게 되어, 장치의 소형화, 휴대화가 가능하고, 제조비를 낮춤과 동시에 제조 수율을 높일 수 있을 뿐만 아니라, 사용 시 고장이 거의 없는 효과가 있다.
Abstract:
PURPOSE: A microfluidic device applied to a biochip is provided to mix microfluid by disposing hot wires in a reaction chamber to form layers and heating or cooling stored fluids. CONSTITUTION: The microfluidic device for mixing microfluid comprises a first flow channel delivering a first fluid(106); a second flow channel delivering a second fluid(108); a reaction chamber connected to ends of the first and second flow channels and having hot wires(104) for heating the inside; and a part for stopping flow connected to end of the reaction chamber so as to prevent the first and second fluids from moving. When the first and second fluids meet in the reaction chamber and form layers, the first and second fluids are heated or cooled using the hot wires to generate the density difference, thereby mixing the first and second fluids by gravity.
Abstract:
PURPOSE: A fluorescence detecting device for detecting biomolecule using amorphous-silicon thin film transistor and a method for detecting the fluorescence using the same are provided, thereby reducing the size and costs of DNA chip because optical devices are not used, and requiring no fluorescence stimulating light blocking filter by using a transparent substrate. CONSTITUTION: A fluorescence detecting device for detecting biomolecule using amorphous-silicon thin film transistor comprises a first substrate with a probe biomolecule; a transparent substrate(102) having a first domain(I), a second domain(II) and a third domain(III), and having a first surface(102a) where a light is irradiated and a second surface(102b) arranged to face the first substrate; a light thin film transistor(TFToptic) producing electric charge responding to the fluorescence produced from the biomolecule on the second surface(102b) and positioned in the first domain(I); a capacity(CAP) storing the electric charge produced from the light thin film transistor(TFToptic) and positioned in parallel to the light thin film transistor(TFToptic) in the second domain(II); and a transfer thin film transistor(TFTtrans) transferring the electric charge to an additional analysis system and positioned in parallel to the capacity(CAP) in the third domain(III).
Abstract:
PURPOSE: A plating apparatus having electrode ring is provided to form a plating film having a uniformed thickness by adhering the electrode ring to the upper end of a plating tank so that an electric field is uniformly distributed on the surface of wafers during electroplating. CONSTITUTION: The plating apparatus comprises a plating tank; a plural first polarity contact point rods and a second polarity contact point rod formed on the plating tank; a loop shaped electrode ring(200) which is connected to the plural first polarity contact point rods, and on the inner surface of which a plurality of stepped projections(220) are formed so that the bodies to be plated are rested on the stepped projections with the circumference of the edge of various bodies to be plated having different size being contacted with the plurality of stepped projections(220), wherein the plating apparatus further comprises a metal box arranged at the lower part of the electrode ring to be connected to the second polarity contact point rod; and a sprayer arranged at the lower part of the metal box to spray a plating solution, wherein the plating tank comprises first plating tank on which the electrode ring and metal box are mounted, and second plating tank on which the sprayer is mounted, the first and second plating tanks are separately connected to each other, wherein the plating apparatus further comprises a plating tank of which outer wall covers the plating tank, and the upper part of which is opened, and a lid installed to open or close an opening part of the plating tank outer wall, wherein a power supply terminal connected to the first and second polarity contact point rods is installed on the lower surface of the lid, wherein the residual surface of the electrode ring is coated with a chemical resistant coating material(210) except a surface on which the bodies to be plated are rested and supported and a part of the electrode ring which comes in contact with the first polarity contact point rods, and wherein the coating material(210) is Teflon or polyethylene.
Abstract:
본 발명은 구리 교차오염을 방지할 수 있는 고 밀도/ 고 균일성 솔더 범프(solder bump) 형성방법에 관한 것으로서, 보다 상세하게 설명하면 고 밀도/고 균일성을 갖는 솔더 볼 형성방법 및 구리 교차오염문제의 해결방법에 관한 것이다. 상기한 문제를 해결하기 위해 본 발명은 대규모 집적회로 칩 기판위에 전기도금용 전극을 스퍼터링(sputtering)한 후, 다중코팅방법으로 감광제막 코팅을 하여 비아(via)를 형성한 다음에 솔더(solder) 도금을 위한 구리 씨드(Cu seed)를 스퍼터링(sputtering)하여 솔더 볼(solder ball)을 형성하는 것을 특징으로 하는 솔더 범프 형성방법이 제공된다.
Abstract:
PURPOSE: A method for fabricating a bump is provided to minimize stress generated by the difference of a thermal expansion coefficient between a chip and a substrate, by forming the bump of a high aspect ratio. CONSTITUTION: Photoresist is coated several times to form a relatively thick photoresist. An exposure and development process is selectively performed regarding the photoresist to form a plurality of vias. A bump material is plated on the via. The photoresist is stripped. The plated bump material is reflowed to a spherical bump by a reflow method.
Abstract:
PURPOSE: A method of forming a T-shaped gate is provided to improve step coverage and to form a fine gate so that the cross section area of the gate can be increased and the resistance of the gate can be reduced. CONSTITUTION: The first and second insulation layer(25,26) having different etch selectivity are sequentially formed on a semiconductor substrate(21). A hole having its upper diameter is larger than its lower diameter is formed by etching the first and second insulation layer. A third insulation layer(29) is formed to bury the hole and then a portion of the semiconductor substrate is exposed. By etch back of the third insulation layer, the third insulation layer remains on the hole. The first and second photoresist layer are sequentially formed on the entire surface. The first and second photoresist layer are patterned to expose the hole though an opening. A metal layer(34a) for gate is deposited and the first and second photoresist layer are removed to form a T-shaped gate.
Abstract:
PURPOSE: A method for fabricating a solder bump capable of preventing copper cross contamination in a silicon laboratory is to reduce fabricating cost by sufficiently using a conventional apparatus so that a high ball and a high density solder ball are formed. CONSTITUTION: An electrode(4) for electroplating is sputtered on a high integrated circuit chip substrate(1). A photoresist layer is coated to form a via. A copper seed for solder plating is sputtered to form the solder ball. A copper/titanium seed for preventing the copper and solder from being plated is thinly sputtered on the photoresist layer. The photoresist layer is thickly formed by a multi-coating technology.