Abstract:
PROBLEM TO BE SOLVED: To provide a method for accurately and easily manufacturing a three-dimensional structure. SOLUTION: A first structure 20 is formed on a substrate 10, a sacrifice layer 30 is applied thereto with spin coating, a second structure 40 is formed on the sacrifice layer 30, the sacrifice layer 30 is removed therefrom to form the three-dimensional structure 1, and thereby the second structure 40 drops onto the first structure 20. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
고체 구조내에 에어 갭(air gap)을 형성하는 방법이 제공된다. 이 방법에서, 희생 물질(sacrificial material)이 오버레이어(overlayer)에 의해 피복된다. 그후 희생 물질을 오버레이어를 통해 제거하여 에어 갭을 남긴다. 이러한 에어 갭은 전기 접속 구조와 같은 전자 디바이스에서 금속 라인 사이의 절연으로서 특히 유용하다. 에어 갭을 함유한 구조가 또한 제공된다.
Abstract:
PURPOSE: A method for producing a micro mirror actuator is provided to level a micro mirror by laminating a polyimide film in order to enhance the reflectivity of the micro mirror and to simple a procedure for leveling the micro mirror. CONSTITUTION: A trench corresponding area is etched into a substrate(10). After etching the trench corresponding area, an insulating layer(25) and a metal film are deposited onto the substrate(10). A lower electrode(35) and a side electrode(37) are formed by patterning the metal film. An organic film(45) is deposited onto the substrate(10) of the lamination stack in order to maintain the trench corresponding area in a hollow state. Thereafter, a via hole is formed by patterning the organic film(45). A metal film is deposited onto the organic film(45) and thereafter patterning the metal film is done. Then, the organic film(45) is removed. After removing the organic film(45), a micro mirror, a torsion spring and a post are formed.
Abstract:
The movable part of a MEMS device is encapsulated and protected while in wafer form so that commodity, lead-frame packaging can be used. An overcoat polymer, such as, epoxycyclohexyl polyhedral oligomeric silsesquioxanes (EPOSS) has been used as a mask material to pattern the sacrificial polymer as well as overcoat the air-cavity. The resulting air-cavities are clean, debris-free, and robust. The cavities have substantial strength to withstand molding pressures during lead-frame packaging of the MEMS devices. A wide range of cavities from 20 pm x 400 pm to 300 μm x 400 um have been fabricated and shown to be mechanically stable. These could potentially house MEMS devices over a wide range of sizes. The strength of the cavities has been investigated using nano-indentation and modeled using analytical and finite element techniques. Capacitive resonators packaged using this protocol have shown clean sensing electrodes and good functionality.
Abstract translation:MEMS器件的可移动部件以晶片形式被封装和保护,从而可以使用商品的引线框架封装。 已经使用外涂聚合物,例如环氧环己基多面体低聚倍半硅氧烷(EPOSS)作为掩模材料来模制牺牲聚合物以及覆盖空气腔。 所产生的空气腔是干净,无碎片和坚固的。 空腔具有相当大的强度以承受MEMS器件的引线框架封装期间的成型压力。 已经制造了从20 pm x 400 pm到300 mum x 400um的宽范围的空腔,并显示为机械稳定的。 这些可能会在各种尺寸范围内容纳MEMS器件。 已经使用纳米压痕研究了腔的强度,并使用分析和有限元技术进行了建模。 使用该协议封装的电容谐振器已经显示出清洁的感测电极和良好的功能。
Abstract:
The present invention generally relates to a MEMS device in which silicon residues from the adhesion promoter material are reduced or even eliminated from the cavity floor. The adhesion promoter is typically used to adhere sacrificial material to material above the substrate. The adhesion promoter is the removed along with then sacrificial material. However, the adhesion promoter leaves silicon based residues within the cavity upon removal. The inventors have discovered that the adhesion promoter can be removed from the cavity area prior to depositing the sacrificial material. The adhesion promoter which remains over the remainder of the substrate is sufficient to adhere the sacrificial material to the substrate without fear of the sacrificial material delaminating. Because no adhesion promoter is used in the cavity area of the device, no silicon residues will be present within the cavity after the switching element of the MEMS device is freed.
Abstract:
MEMS devices (such as interferometric modulators) may be fabricated using a sacrificial layer that contains a heat vaporizable polymer to form a gap between a moveable layer and a substrate. One embodiment provides a method of making a MEMS device that includes depositing a polymer layer over a substrate, forming an electrically conductive layer over the polymer layer, and vaporizing at least a portion of the polymer layer to form a cavity between the substrate and the electrically conductive layer. Another embodiment provides a method for making an interferometric modulator that includes providing a substrate, depositing a first electrically conductive material over at least a portion of the substrate, depositing a sacrificial material over at least a portion of the first electrically conductive material, depositing an insulator over the substrate and adjacent to the sacrificial material to form a support structure, and depositing a second electrically conductive material over at least a portion of the sacrificial material, the sacrificial material being removable by heat-vaporization to thereby form a cavity between the first electrically conductive layer and the second electrically conductive layer.