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    • 1. 发明申请
    • METHOD FOR FABRICATING SEMICONDUCTOR DEVICE
    • 制造半导体器件的方法
    • US20120252201A1
    • 2012-10-04
    • US13234410
    • 2011-09-16
    • Takuo OHASHI
    • Takuo OHASHI
    • H01L21/28
    • H01L27/11521
    • According to one embodiment, a method for fabricating a semiconductor device including a memory cell portion and a select gate portion, the method includes etching a charge accumulation layer, a tunnel insulating film, and a semiconductor substrate to make a trench, burying a first insulating film in the trench to contact with a side surface of the charge accumulation layer, performing heat processing to compress the first insulating film, forming a second insulating film on the charge accumulation layer and the first insulating film, etching the second insulating film in the select gate portion to expose a surface of the charge accumulation layer, forming a silicon layer to contact with the exposed surface of the charge accumulation layer, forming a metal layer on the silicon layer, and performing heat processing to silicide an entire boundary region between the charge accumulation layer and the tunnel insulating film.
    • 根据一个实施例,一种用于制造包括存储单元部分和选择栅极部分的半导体器件的方法,所述方法包括蚀刻电荷累积层,隧道绝缘膜和半导体衬底以形成沟槽,将第一绝缘体 在所述沟槽中与所述电荷蓄积层的侧面接触的膜,进行热处理以压缩所述第一绝缘膜,在所述电荷累积层和所述第一绝缘膜上形成第二绝缘膜,在所述选择中蚀刻所述第二绝缘膜 栅极部分,以暴露电荷累积层的表面,形成硅层与电荷累积层的暴露表面接触,在硅层上形成金属层,并进行热处理以使电荷之间的整个边界区域硅化 堆积层和隧道绝缘膜。
    • 5. 发明授权
    • Semiconductor device and method for producing same
    • 半导体装置及其制造方法
    • US06214700B1
    • 2001-04-10
    • US09321885
    • 1999-05-28
    • Takuo OhashiTomohisa Kitano
    • Takuo OhashiTomohisa Kitano
    • H01L2176
    • H01L21/76202H01L21/7621H01L21/76216
    • On the surface of a field oxide film (3 of FIG. 2e) formed on a substrate region where the effective thickness in the vertical direction of a substrate is diminished due to the presence of a crystal defect (2 of FIG. 1a), the field oxide film is etched by a predetermined thickness until a recess (4 of FIG. 2f) ascribable to the presence of the defect is exposed (step of FIG. 2f). A new oxide film then is formed in an amount corresponding to the above-mentioned thickness on the field oxide film (step of FIG. 3g) to diminish the depth of the recess ascribable to the presence of the defect. To provide a semiconductor device in which leakage between elements can be eliminated with a thin LOCOS oxide film thickness remaining unchanged.
    • 在由于存在晶体缺陷(图1a的2)而使衬底的垂直方向上的有效厚度减小的衬底区域上形成的场氧化膜(图2e的3)的表面上, 以预定的厚度蚀刻场氧化膜,直到暴露出存在缺陷的凹陷(图2f的4)(图2f的步骤)。 然后在场氧化膜上形成对应于上述厚度的量的新的氧化膜(图3g的步骤),以减少归因于存在缺陷的凹陷的深度。 为了提供半导体器件,其中可以消除元件之间的泄漏,同时薄的LOCOS氧化物膜厚度保持不变。