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    • 1. 发明授权
    • Method of forming a device isolation trench in an integrated circuit device
    • 在集成电路器件中形成器件隔离沟槽的方法
    • US06828210B2
    • 2004-12-07
    • US10080884
    • 2002-02-22
    • Do-Hyung KimSung-Bong KimJung-In Hong
    • Do-Hyung KimSung-Bong KimJung-In Hong
    • H01L2176
    • H01L21/76232
    • A method of forming a trench isolation in a semiconductor substrate is described, which comprises the steps of forming a trench on the substrate, forming a diffusion barrier insulating layer, forming a thermal oxide layer both sidewall and bottom of the trench contacted with the diffusion barrier insulating layer, forming a nitride liner, and forming trench isolation material to fill the trench. A multi-structure of the barrier layer and the thermal oxide layer is provided between the nitride liner and the trench, resulting in minimization of transistor characteristic deterioration. A thin thermal oxide layer is formed to achieve improved trench etching profile.
    • 描述了在半导体衬底中形成沟槽隔离的方法,其包括以下步骤:在衬底上形成沟槽,形成扩散阻挡绝缘层,形成与扩散阻挡层接触的沟槽的侧壁和底部的热氧化物层 绝缘层,形成氮化物衬垫,以及形成沟槽隔离材料以填充沟槽。 在氮化物衬垫和沟槽之间设置阻挡层和热氧化物层的多结构,导致晶体管特性劣化的最小化。 形成薄的热氧化物层以实现改进的沟槽蚀刻轮廓。
    • 7. 发明授权
    • Method for fabricating a semiconductor device
    • 半导体器件的制造方法
    • US5395795A
    • 1995-03-07
    • US80053
    • 1993-06-22
    • Jung-In HongJe-Sung HwangMin-Suk Han
    • Jung-In HongJe-Sung HwangMin-Suk Han
    • H01L21/28H01L21/3205H01L21/768H01L23/52H01L21/441
    • H01L21/76843H01L21/76855
    • A process for forming a barrier metal layer and a metal layer on the surface of a contact hole formed on a semiconductor substrate. A titanium and a first titanium nitride layers are sequentially deposited on the surface of the contact hole and annealed, and thereafter, a second titanium nitride layer is deposited on the first titanium nitride layer and annealed, to thereby form a barrier metal layer. A first aluminum layer alloyed with silicon and copper of a given quantity, and a second aluminum layer alloyed with copper of a given quantity, are sequentially deposited on the barrier metal layer, and thereafter performed, the annealing process is performed. A third aluminum layer alloyed with copper of a given quantity is deposited on the second aluminum layer and annealed, to thereby form a metal layer. Accordingly, a leakage current is considerably reduced due to preventions of a silicon extraction phenomenon and an aluminum spike phenomenon, and a contact resistance is reduced and a step coverage is improved by effectively burying the contact hole through the above process, to thereby obtain a reliable semiconductor device.
    • 在半导体基板上形成的接触孔的表面上形成阻挡金属层和金属层的工序。 将钛和第一氮化钛层依次沉积在接触孔的表面上并退火,然后在第一氮化钛层上沉积第二氮化钛层并进行退火,从而形成阻挡金属层。 将与给定量的硅和铜合金的第一铝层和与给定量的铜合金化的第二铝层依次沉积在阻挡金属层上,然后进行退火处理。 将与给定量的铜合金化的第三铝层沉积在第二铝层上并退火,从而形成金属层。 因此,由于硅提取现象和铝尖峰现象的防止,泄漏电流显着降低,并且通过上述过程有效地埋入接触孔,降低了接触电阻并提高了台阶覆盖率,从而获得可靠的 半导体器件。