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    • 55. 发明申请
    • PLANARIZATION OF GAN BY PHOTORESIST TECHNIQUE USING AN INDUCTIVELY COUPLED PLASMA
    • 使用电感耦合等离子体技术通过光电子技术进行平面化
    • WO2007145679A2
    • 2007-12-21
    • PCT/US2007002943
    • 2007-02-02
    • UNIV BOSTONMOUSTAKAS THEODORE DWILLIAMS ADRIAN D
    • MOUSTAKAS THEODORE DWILLIAMS ADRIAN D
    • H01L21/76
    • H01L21/30621
    • Films of Ill-nitride for semiconductor device growt are planarized using an etch-back method. The metho includes coating a III-nitride surface having surface roughness features in the micron range with a sacrificial planarization material such as an appropriately chose photoresist. The sacrificial planarization material is then etched together with the Ill-nitride roughness features using dry etch methods such as inductivel coupled plasma reactive ion etching. By closely matchin the etch rates of the sacrificial planarization materia and the III-nitride material, a planarized Ill-nitride surface is achieved. The etch-back process together wit a high temperature annealing process yields a planarize III -nitride surface with surface roughness features reduced to the nm range. Planarized Ill-nitride, e.g., GaN, substrates and devices containing them are als provided.
    • 使用回蚀法平面化半导体器件生长的III族氮化物薄膜。 该方法包括用诸如适当选择的光致抗蚀剂的牺牲平坦化材料涂覆在微米范围内具有表面粗糙度特征的III族氮化物表面。 然后使用诸如感应耦合的等离子体反应离子蚀刻之类的干蚀刻方法将牺牲平坦化材料与III族氮化物粗糙度特征一起蚀刻。 通过紧密匹配牺牲平坦化材料和III族氮化物材料的蚀刻速率,实现了平坦化的III族氮化物表面。 回蚀工艺与高温退火工艺一起产生了具有降低到nm范围的表面粗糙度特征的平面化III氮化物表面。 提供平面化的III族氮化物,例如GaN,衬底和含有它们的器件。
    • 56. 发明申请
    • REDUCTION OF CARROT DEFECTS IN SILICON CARBIDE EPITAXY
    • 减少碳化硅外壳中的卡扣缺陷
    • WO2005093137A1
    • 2005-10-06
    • PCT/US2004/038895
    • 2004-11-18
    • CREE, INC.O'LOUGHLIN, Michael JohnSUMAKERIS, Joseph John
    • O'LOUGHLIN, Michael JohnSUMAKERIS, Joseph John
    • C30B29/36
    • C30B25/02C03B23/02C30B29/36H01L21/02019H01L21/30621
    • Single crystal silicon carbide epitaxial layer on an off-axis substrate are manufactured by placing the substrate in an epitaxial growth reactor, growing a first layer of epitaxial silicon carbide on the substrate, interrupting the growth of the first layer of epitaxial silicon carbide, etching the first layer of epitaxial silicon carbide to reduce the thickness of the first layer, and regrowing a second layer of epitaxial silicon carbide on the first layer of epitaxial silicon carbide. Carrot defects may be terminated by the process of interrupting the epitaxial growth process, etching the grown layer and regrowing a second layer of epitaxial silicon carbide. The growth interruption/etching/regrowth may be repeated multiple times. A silicon carbide epitaxial layer has at least one carrot defect that is terminated within the epitaxial layer. A semiconductor structure includes an epitaxial layer of silicon carbide on an off-axis silicon carbide substrate, and a carrot defect having a nucleation point in the vicinity of an interface between the substrate and the epitaxial layer and is terminated within the epitaxial layer.
    • 通过将衬底放置在外延生长反应器中,在衬底上生长第一层外延碳化硅,中断外延碳化硅的第一层的生长,蚀刻外延碳化硅的第一层,制造脱轴衬底上的单晶碳化硅外延层 第一层外延碳化硅以减小第一层的厚度,以及在第一层外延碳化硅上再生第二层外延碳化硅。 胡萝卜缺陷可以通过中断外延生长过程,蚀刻生长层和再生第二层外延碳化硅的过程来终止。 生长中断/蚀刻/再生长可以重复多次。 碳化硅外延层具有端接在外延层内的至少一个胡萝卜缺陷。 半导体结构包括在偏轴碳化硅衬底上的碳化硅外延层和在衬底和外延层之间的界面附近具有成核点的胡萝卜缺陷,并且终止在外延层内。
    • 59. 发明申请
    • PROCESS OF SHAPING FEATURES OF SEMICONDUCTOR DEVICES
    • 形成半导体器件特征的工艺
    • WO1994013010A1
    • 1994-06-09
    • PCT/US1992010151
    • 1992-11-25
    • FEI COMPANY
    • FEI COMPANYSWANSON, Lynwood, W.LINDQUIST, John, M.
    • H01L21/306
    • H01J37/3056H01J2237/006H01L21/30621H01L21/3065H01L21/32136
    • Semiconductor devices are modified and/or repaired by a gas enhanced physical puttering process. A sample (22) is positioned on a movable X-Y stage (24) located within a lower chamber (26) which is evacuated and under the control of vacuum controller (32). In an evacuated envelop (10) a focused ion beam (18) passes from a liquid metal ion source (14) through column (16) and deflection means (20) and is scanned over an area to be removed on the sample (22). Iodine vapor from source (46) is directed toward the same area to aid in the selective sputtering by enabling a chemical reaction at the scanned area. The iodine may be initially handled in a solid state and is then heated inside the focused ion beam system without presenting a toxic hazard.
    • 半导体器件通过气体增强的物理推杆过程进行修改和/或修复。 样品(22)定位在位于下室(26)内的可移动X-Y台(24)上,该下室(28)被抽真空并在真空控制器(32)的控制下。 在抽真空的包络(10)中,聚焦离子束(18)从液态金属离子源(14)通过色谱柱(16)和偏转装置(20)传送并扫描在样品(22)上待除去的区域上, 。 来自源极(46)的碘蒸气被引向相同的区域,以通过在扫描区域进行化学反应来帮助选择性溅射。 碘可以最初以固态处理,然后在聚焦离子束系统内被加热,而不会产生毒性危险。