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    • 2. 发明授权
    • Method of forming a liner for shallow trench isolation
    • 浅沟槽隔离衬垫的形成方法
    • US06180492B2
    • 2001-01-30
    • US09237298
    • 1999-01-25
    • Hsueh-Hao ShihTri-Rung YewWater LurGwo-Shii Yang
    • Hsueh-Hao ShihTri-Rung YewWater LurGwo-Shii Yang
    • H01L2176
    • H01L21/76224
    • An improved method for forming shallow trench isolation structure is described. The present method comprises the steps of providing a pad oxide layer and a mask layer on a semiconductor substrate and forming a trench structure therein. Next, a liner oxide layer is formed on the surface of the trench structure in the semiconductor substrate and is extensively formed on the side surface of the mask layer exposed therein and the top surface of the mask layer by wet oxidation. A dielectric material is deposited on the liner oxide layer and fills the trench structure. The dielectric material layer is planarized. The mask layer and the pad oxide layer are then removed to form the isolation structures. The method for forming the shallow trench structures on a semiconductor structure in accordance with the present invention can eliminate the kink effect that occurs in the conventional method.
    • 描述了一种用于形成浅沟槽隔离结构的改进方法。 本方法包括以下步骤:在半导体衬底上提供衬垫氧化物层和掩模层,并在其中形成沟槽结构。 接下来,在半导体衬底中的沟槽结构的表面上形成衬垫氧化物层,并且通过湿氧化在其中暴露于其中的掩模层的侧表面和掩模层的顶表面上广泛地形成衬里氧化物层。 电介质材料沉积在衬垫氧化物层上并填充沟槽结构。 介电材料层被平坦化。 然后去除掩模层和焊盘氧化物层以形成隔离结构。 根据本发明的在半导体结构上形成浅沟槽结构的方法可以消除在常规方法中发生的扭结效应。
    • 9. 发明授权
    • Method of manufacturing shallow trench isolation
    • 制造浅沟槽隔离的方法
    • US06251783B1
    • 2001-06-26
    • US09189847
    • 1998-11-12
    • Tri-Rung YewKuo-Tai HuangGwo-Shii YangWater Lur
    • Tri-Rung YewKuo-Tai HuangGwo-Shii YangWater Lur
    • H01L21302
    • H01L21/31053H01L21/76229
    • A method of manufacturing shallow trench isolation structures. The method includes the steps of depositing insulating material into the trench of a substrate to form an insulation layer. The substrate has a plurality of active regions, each occupying a different area and having different sizes. In addition, there is a silicon nitride layer on top of each active region. Thereafter, a photoresist layer is then deposited over the insulation layer. Next, a portion of the photoresist layer is etched back to expose a portion of the oxide layer so that the remaining photoresist material forms a cap layer over the recessed area of the insulation layer. Subsequently, using the photoresist cap layer as a mask, the insulation layer is etched to remove a portion of the exposed oxide layer, thereby forming trenches within the oxide layer. After that, the photoresist cap layer is removed. Finally, a chemical-mechanical polishing operation is carried out to polish the insulation layer until the silicon nitride layer is exposed.
    • 制造浅沟槽隔离结构的方法。 该方法包括以下步骤:将绝缘材料沉积到衬底的沟槽中以形成绝缘层。 基板具有多个活性区域,每个活性区域占据不同的区域并且具有不同的尺寸。 此外,在每个有源区的顶部有一个氮化硅层。 此后,然后将光致抗蚀剂层沉积在绝缘层上。 接下来,将光致抗蚀剂层的一部分回蚀刻以暴露氧化物层的一部分,使得剩余的光致抗蚀剂材料在绝缘层的凹陷区域上形成覆盖层。 随后,使用光致抗蚀剂覆盖层作为掩模,蚀刻绝缘层以去除暴露的氧化物层的一部分,从而在氧化物层内形成沟槽。 之后,去除光致抗蚀剂覆盖层。 最后,进行化学机械抛光操作以抛光绝缘层,直到暴露氮化硅层。