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    • 1. 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。
    • 2. 发明授权
    • Reduction of tungsten damascene residue
    • 还原钨镶嵌残渣
    • US06395635B1
    • 2002-05-28
    • US09206741
    • 1998-12-07
    • Ying-Lang WangJowei Dun
    • Ying-Lang WangJowei Dun
    • H01L21302
    • H01L21/31053H01L21/3212
    • A CMP process is provided for the reduction of tungsten damascene residue and the elimination of surface scratch within the surface that is being polished. A three step polishing procedure of the ILD is followed by a two step buffing procedure of the ILD. The three step polishing procedure reduces the device defect count by eliminating damascene residue from the polished surface. The two step buffing procedure reduces micro scratch within the polished surface thus improving device throughput. A two step buffing procedure is applied to the IMD. Oxide buffing is applied and consists of a three step polishing procedure followed by a two step buffing procedure.
    • 提供了一种CMP工艺,用于减少钨镶嵌残余物并消除正在抛光的表面内的表面划痕。 ILD的三步抛光程序之后是ILD的两步抛光程序。 三步抛光程序通过从抛光表面去除镶嵌残留物来减少设备缺陷计数。 两步抛光程序减少抛光表面内的微刮痕,从而提高设备的生产能力。 对IMD应用两步抛光程序。 应用氧化物抛光,并由三步抛光程序组成,其后是两步抛光程序。
    • 5. 发明授权
    • Three-dimensional type inductor for mixed mode radio frequency device
    • 用于混合模式射频设备的三维型电感器
    • US06291872B1
    • 2001-09-18
    • US09433255
    • 1999-11-04
    • Ying-Lang WangHway-Chi LinJun WuJowei Dun
    • Ying-Lang WangHway-Chi LinJun WuJowei Dun
    • H01L2900
    • H01L28/10H01F17/0013H01L27/08
    • Vertical type structures for integrated circuit inductors are disclosed. These vertical type inductors include the single-loop type, the parallel-loop type and the screw type, which form three different embodiments in the present invention. In the first embodiment, three-dimensional type structures, a single-loop type is utilized as an integrated circuit inductor. This inductor structure is formed on a substrate and the axis of the structure is upright to the substrate. In another embodiment according to the present invention, a parallel-loop type structure for radio frequency (RF) integrated circuit inductor is provided. A screw type structure according to this invention is the third embodiment. It features an axis that is parallel to the surface of the substrate and threads into the semiconductor device.
    • 公开了集成电路电感器的垂直型结构。 这些垂直型电感器包括在本发明中形成三个不同实施例的单环型,并联环型和螺旋型。 在第一实施例中,采用单环型的三维型结构作为集成电路电感器。 该电感器结构形成在基板上,并且该结构的轴线垂直于基板。 在根据本发明的另一实施例中,提供了一种用于射频(RF)集成电路电感器的并联环路结构。 根据本发明的螺杆型结构是第三实施例。 它具有平行于衬底表面并进入半导体器件的轴线。