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    • 44. 发明授权
    • Process for cleaning a semiconductor substrate after chemical-mechanical
polishing
    • 化学机械抛光后清洗半导体衬底的工艺
    • US6099662A
    • 2000-08-08
    • US248726
    • 1999-02-11
    • Ying-Lang WangJowei DunKen-Shen ChouYu-Ku Lin
    • Ying-Lang WangJowei DunKen-Shen ChouYu-Ku Lin
    • H01L21/02H01L21/306H01L21/3105H01L21/321B08B3/00H01L21/00
    • H01L21/02065H01L21/02074H01L21/31053H01L21/3212
    • An improved method for removing residual slurry particles and metallic residues from the surface of a semiconductor substrate after chemical-mechanical polishing has been developed. The cleaning method involves sequential spray cleaning solutions of NH.sub.4 OH and H.sub.2 O, NH.sub.4 OH, H.sub.2 O.sub.2 and H.sub.2 O, HF and H.sub.2 O, and HCl, H.sub.2 O.sub.2 and H.sub.2 O. The cleaning sequence is: 1. A pre-soak in a spray solution of NH.sub.4 OH and H.sub.2 O; 2. Spray cleaning in a solution of NH.sub.4 OH, H.sub.2 O.sub.2 and H.sub.2 O; 3. Spray cleaning in a dilute solution of HF and H.sub.2 O; 4. Spray rinsing in DI-water. It is important that slurry particulates first be removed by NH.sub.4 OH, H.sub.2 O.sub.2 and H.sub.2 O, followed by spray cleaning in a dilute solution of HF and H.sub.2 O to remove metallic residues. The spray cleaning method is superior to brush cleaning methods for both oxide-CMP and tungsten-CMP and results in superior removal of slurry particles and metallic residues introduced by the CMP processes. An optional spray cleaning step using a solution of HCl, H.sub.2 O.sub.2 and H.sub.2 O results in further reduction of metallic residue contamination following oxide-CMP. Compared to traditional brush cleaning the new spray cleaning process has a 2.times. improvement in throughput, less consumption of DI water, and low risk of cross-contamination between sequentially cleaned substrates.
    • 已经开发了用于在化学机械抛光之后从半导体衬底的表面除去残余浆料颗粒和金属残留物的改进方法。 清洗方法包括NH 4 OH和H 2 O,NH 4 OH,H 2 O 2和H 2 O,HF和H 2 O以及HCl,H 2 O 2和H 2 O的顺序喷雾清洗溶液。 清洗顺序为:1.在NH4OH和H2O的喷雾溶液中预浸泡; 2.在NH4OH,H2O2和H2O溶液中喷雾清洗; 3.在HF和H2O的稀溶液中喷雾清洗; 4.在DI水中喷淋。 重要的是,首先通过NH 4 OH,H 2 O 2和H 2 O除去浆料颗粒,然后在HF和H 2 O的稀溶液中喷雾清洗以除去金属残余物。 喷雾清洗方法优于氧化物CMP和钨-CMP两者的刷子清洗方法,并且优异地除去由CMP工艺引入的浆料颗粒和金属残留物。 使用HCl,H2O2和H2O溶液的可选喷雾清洗步骤可以进一步降低氧化物CMP后的金属残留污染。 与传统的刷子清洁相比,新的喷雾清洁过程在吞吐量方面有2倍的改善,更少的去离子水消耗,以及顺序清洗的基材之间交叉污染的风险较低。
    • 46. 发明授权
    • Apparatus for wafer grinding
    • 晶圆研磨设备
    • US09120194B2
    • 2015-09-01
    • US13188028
    • 2011-07-21
    • Kuo-Hsiu WeiKei-Wei ChenYing-Lang WangChun-Ting Kuo
    • Kuo-Hsiu WeiKei-Wei ChenYing-Lang WangChun-Ting Kuo
    • B24B7/22B24D7/14
    • B24B7/228B24D7/14
    • A grinding wheel comprises an outer base with a first attached grain pad; and an inner frame with a second attached grain pad; and a spindle axis shared by the outer base and the inner frame, wherein at least one of the outer base and the inner frame can move independently along the shared spindle axis; and wherein the outer base, the inner frame, and the shared spindle axis all have a same center. A grinding system comprises an above said grinding wheel, and a wheel head attached to the shared spindle axis, capable of moving vertically, in addition to a motor driving the grinding wheel to spin; and a chuck table for fixing a wafer on top of the chuck table; wherein the grinding wheel overlaps a portion of the chuck table, each capable of spinning to the opposite direction of another.
    • 砂轮包括具有第一附接谷物垫的外基部; 以及具有第二附着谷物垫的内框架; 以及由所述外基座和所述内框架共享的主轴,其中所述外基座和所述内框架中的至少一个可以沿着所述共享主轴轴线独立地移动; 并且其中所述外基座,所述内框架和所述共享主轴轴线都具有相同的中心。 研磨系统包括上述砂轮和附接到共享主轴轴线的能够垂直移动的砂轮头,除了驱动砂轮旋转的马达之外, 以及用于将晶片固定在卡盘台顶部的卡盘台; 其中所述砂轮与所述卡盘台的一部分重叠,所述卡盘台的每一个能够沿相反方向旋转。
    • 48. 发明授权
    • Semiconductor device
    • 半导体器件
    • US08552529B2
    • 2013-10-08
    • US13488958
    • 2012-06-05
    • Jung-Chih TsaoYu-Sheng WangKei-Wei ChenYing-Lang Wang
    • Jung-Chih TsaoYu-Sheng WangKei-Wei ChenYing-Lang Wang
    • H01L21/02
    • H01L27/0805H01L28/60H01L28/75
    • A semiconductor device is disclosed. The device includes a substrate; a first metal layer overlying the substrate; a dielectric layer overlying the first metal layer; and a second metal layer overlying the dielectric layer, wherein the first metal layer comprises: a first body-centered cubic lattice metal layer; a first underlayer, underlying the first body-centered cubic lattice metal layer, wherein the first underlayer is metal of body-centered cubic lattice and includes titanium (Ti), tungsten (W), molybdenum (Mo) or niobium (Nb); and a first interface of body-centered cubic lattice between the first body-centered cubic lattice metal layer and the first underlayer.
    • 公开了一种半导体器件。 该装置包括基板; 覆盖衬底的第一金属层; 覆盖在第一金属层上的电介质层; 以及覆盖所述电介质层的第二金属层,其中所述第一金属层包括:第一体心立方晶格金属层; 第一底层,位于第一体心立方晶格金属层下面,其中第一底层是体心立方晶格的金属,包括钛(Ti),钨(W),钼(Mo)或铌(Nb); 以及在第一体心立方晶格金属层和第一底层之间的体心立方晶格的第一界面。