Method of manufacturing a semiconductor device having a planarized
construction
    2.
    发明授权
    Method of manufacturing a semiconductor device having a planarized construction 失效
    具有平坦化结构的半导体器件的制造方法

    公开(公告)号:US5015602A

    公开(公告)日:1991-05-14

    申请号:US522490

    申请日:1990-05-10

    CPC分类号: H01L21/76229

    摘要: A method of manufacturing a semiconductor device, in which a depression (1,2,3) in a surface (4) of a semiconductor substrate (5) is filled by covering it with a preplanarized filling layer (8,19,22) and a further planarization layer (9), after which the substrate (5) is brought into contact with an etchant, in which both layers (8,19,22) and (9) are etched at substantially the same rate. According to the invention, the preplanarized filling layer (8,19,22) is formed by covering the surface (4) with a layer of filling material (6) and then removing it beside the depression (1,2,3) over part of its thickness. Thus, the depression (1,2,3) is filled homogeneously in a comparatively simple manner with material of the filling layer (6).

    摘要翻译: 一种制造半导体器件的方法,其中半导体衬底(5)的表面(4)中的凹陷(1,2,3)通过用预共面填充层(8,19,22)覆盖而被填充,并且 另外的平坦化层(9),然后使衬底(5)与蚀刻剂接触,其中两个层(8,19,22)和(9)以基本上相同的速率被蚀刻。 根据本发明,通过用一层填充材料(6)覆盖表面(4),然后在凹部(1,2,3)上方部分地将其去除,形成预平面化填充层(8,19,22) 的厚度。 因此,用填充层(6)的材料以相对简单的方式均匀地填充凹陷(1,2,3)。

    Method of manufacturing a semiconductor device having field oxide
regions formed through oxidation
    3.
    发明授权
    Method of manufacturing a semiconductor device having field oxide regions formed through oxidation 失效
    制造具有通过氧化形成的场氧化物区域的半导体器件的方法

    公开(公告)号:US5254494A

    公开(公告)日:1993-10-19

    申请号:US896082

    申请日:1992-06-08

    摘要: A method of manufacturing a semiconductor device includes forming field oxide regions (17) in a surface (1) of a silicon body (2) through oxidation, which body is provided with an oxidation mask (15) formed in a layered structure provided on the surface with a lower layer (4) of silicon oxide, an intermediate layer (5) of polycrystalline silicon and an upper layer (6) of a material including silicon nitride in which windows (8) are etched into the upper layer. The intermediate layer is etched away inside the windows and below an edge (10) of the windows, a cavity (11) is formed below the edge, and a material including silicon nitride is provided in the cavity. The material including silicon nitride is provided in the cavity while the surface of the silicon body situated inside the windows is still covered by a layer of silicon oxide, preferably with the lower layer of the layered structure. Field oxide regions can be provided in this way having the same dimensions as the photoresist mask (7) used for etching the window into the upper layer, while in addition a gate oxide (22) free from defects can be provided on the active regions (21) of the silicon body situated between the field oxide regions.

    Method of providing mask alignment marks
    4.
    发明授权
    Method of providing mask alignment marks 失效
    提供掩模对准标记的方法

    公开(公告)号:US5316966A

    公开(公告)日:1994-05-31

    申请号:US101797

    申请日:1993-08-03

    摘要: A method of manufacturing mask alignment marks on an active surface of a semiconductor substrate (12) is disclosed, in which first, at least one layer (13) of a material resistant to oxidation is formed on the active surface, after which by a local etching of this layer, zones (15') for isolation by a field oxide, are defined simultaneously with the alignment marks (17'). There are formed, after the local etching of the layer (13) of anti-oxidation material while using the remaining parts of the anti-oxidation layer as a mask, depressions (26) at the substrate surface of a given depth at least at locations containing the alignment marks, which locations are designated as alignment windows (18) and the surface of the substrate is then exposed within the windows, and finally a thermal oxidation step is effected to obtain the field oxide (19'), during which the alignment marks (18) are simultaneously covered by oxide (24).

    摘要翻译: 公开了一种在半导体衬底(12)的有源表面上制造掩模对准标记的方法,其中首先,在活性表面上形成至少一层耐氧化材料层(13),然后通过局部 该层的蚀刻与场氧化物隔离的区域(15')与对准标记(17')同时定义。 在使用抗氧化层的其余部分作为掩模的同时,在局部蚀刻抗氧化材料层(13)之后,形成至少在位置处的给定深度的基板表面处的凹陷(26) 包含对准标记,这些位置被指定为对齐窗口(18),然后在窗口内露出基板的表面,最后进行热氧化步骤以获得场氧化物(19'),在此期间对准 标记(18)同时被氧化物(24)覆盖。