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    • 2. 发明公开
    • Method for improving the intermediate dielectric profile, particularly for non-volatile memories
    • 为了提高中间介电曲线,特别是用于非易失性存储器的方法
    • EP0793273A1
    • 1997-09-03
    • EP96830086.3
    • 1996-02-28
    • SGS-THOMSON MICROELECTRONICS s.r.l.
    • Brambilla, ClaudioGinami, GiancarloDaffra, StefanoRavaglia, AndreaCereda, Manlio Sergio
    • H01L27/115H01L21/8247
    • H01L27/11521H01L27/115
    • A method for improving the intermediate dielectric profile, particularly for non-volatile memories constituted by a plurality of cells, which comprises the following steps:

      -- forming field oxide regions (14) and drain active area regions (15) on a substrate (1);
      -- forming word lines (16) on the field oxide regions (14);
      -- depositing oxide to form oxide wings (13) that are adjacent to the word lines (16);
         characterized in that it comprises the following additional steps:

      -- opening, by masking (20), source regions (18) and the drain active area regions (15), keeping the field oxide regions (14) that separate one memory cell from the other, inside the memory, covered with resist; and
      -- removing field oxide (14) in the source regions (18) and removing oxide wings (13) from both sides of the word lines (16).
    • 一种提高在中间电介质分布,特别是用于通过细胞的复数,其包括以下步骤构成的非易失性存储器的方法: - 形成场氧化区(14)和漏有源区的区域(15)上的基板(1 ); - 形成字线(16)上的场氧化区(14); - (13)做了沉积氧化,从而形成氧化翼邻近于字线(16); 在这样做是包括下列附加步骤,其特征在于: - 开口,通过掩蔽(20),源极区(18)和漏有源区的区域(15),保持场氧化区(14)做了单独的一个存储器单元从所述 其他,存储器,覆盖有抗蚀剂的内部; 和 - 从所述字线(16)的bothsides除去在源极区(18)和除去氧化物翼(13)的场氧化物(14)。