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    • 10. 发明授权
    • Method of manufacturing a semiconductor device with recesses using anodic oxide
    • 使用阳极氧化物制造具有凹槽的半导体器件的方法
    • US06734084B1
    • 2004-05-11
    • US10603982
    • 2003-06-26
    • Yoshihiko NemotoMasataka HoshinoHitoshi Yonemura
    • Yoshihiko NemotoMasataka HoshinoHitoshi Yonemura
    • H01L21326
    • H01L21/76898Y10S438/928Y10S438/977
    • A method for manufacturing a semiconductor device is capable of controlling amounts of protrusion of penetration electrodes (5) from a rear surface of a semiconductor substrate (4) in a easy and accurate manner. Recesses (7) are formed in a substrate proper (6) that has a semiconductor circuit (2) formed on one surface thereof, and an insulation film (8) is formed on an inner wall surface of each of the recesses (7). A conductive material is filled into the recesses (7) through the insulation films (8) to form embedded electrodes (15) that constitute the penetration electrodes (5). A rear side of the substrate proper (6) is re moved until one end face of each of the embedded electrodes (15) is exposed, thereby to form the penetration electrodes (5). The rear surface of the substrate proper (6) is anodized to form an anodic oxide film (9), which is then removed by etching to form the semiconductor substrate (4).
    • 半导体器件的制造方法能够容易且准确地控制从半导体衬底(4)的后表面突出的穿透电极(5)的量。 凹部(7)形成在其一面形成有半导体电路(2)的基板(6)上,在各凹部(7)的内壁面上形成有绝缘膜(8)。 通过绝缘膜(8)将导电材料填充到凹部(7)中,以形成构成穿透电极(5)的嵌入式电极(15)。 衬底本体(6)的后侧被移动直到每个嵌入电极(15)的一个端面露出,从而形成穿透电极(5)。 衬底本体(6)的后表面被阳极化以形成阳极氧化膜(9),然后通过蚀刻去除以形成半导体衬底(4)。