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    • 1. 发明授权
    • Self-aligned micrometer bipolar transistor device and process
    • 自对准微米双极晶体管器件及工艺
    • US4303933A
    • 1981-12-01
    • US98588
    • 1979-11-29
    • Cheng T. HorngMichael R. PoponiakHans S. RupprechtRobert O. Schwenker
    • Cheng T. HorngMichael R. PoponiakHans S. RupprechtRobert O. Schwenker
    • H01L21/76H01L21/331H01L21/74H01L21/762H01L29/08H01L29/10H01L29/73H01L29/732H01L27/04H01L29/72
    • H01L21/743H01L21/76229H01L21/76232H01L29/0804H01L29/1004H01L29/7325Y10S148/131
    • A method for device fabrication disclosed is a self-aligned process. The device formed has small vertical as well as horizontal dimensions. The device region is surrounded by a deep oxide trench which has nearly vertical sidewalls. The deep trench extends from the epitaxial silicon surface through N+ subcollector region into the P substrate. The width of the deep trench is about 2 .mu.m to 3.0 .mu.m. A shallow oxide trench extending from the epitaxial silicon surface to the upper portion of the N+ subcollector separates the base and collector contact. The surface of the isolation regions and the silicon where the transistor is formed is coplanar. As shown in FIG. 1, the fabricated bipolar transistor has a mesa-type structure. The transistor base dimension is only slightly larger than the emitter. This small base area results in low collector-base capacitance which is a very important parameter in ultra-high performance integrated circuit devices. Contact to the transistor base in the disclosed structure is achieved by a thick heavily boron doped polysilicon layer which surrounds the emitter and makes lateral contact to the active base.
    • 公开的器件制造方法是自对准工艺。 形成的装置具有小的垂直和水平尺寸。 器件区域被具有几乎垂直侧壁的深氧化物沟槽围绕。 深沟槽从外延硅表面通过N +子集电极区域延伸到P衬底中。 深沟的宽度约为2〜3.0亩。 从外延硅表面延伸到N +子集电极的上部的浅氧化物沟槽分离基极和集电极触点。 隔离区域和形成晶体管的硅的表面是共面的。 如图所示。 如图1所示,制造的双极晶体管具有台面型结构。 晶体管基极尺寸仅略大于发射极。 这种小的基极面积导致集电极电容低,这是超高性能集成电路器件中非常重要的参数。 所公开的结构中与晶体管基极的接触是通过围绕发射极的厚的重硼掺杂的多晶硅层实现的,并且与活性基底进行横向接触。
    • 2. 发明授权
    • Process for fabricating a self-aligned micrometer bipolar transistor
device
    • 用于制造自对准微米双极晶体管器件的工艺
    • US4333227A
    • 1982-06-08
    • US224705
    • 1981-01-12
    • Cheng T. HorngMichael R. PoponiakHans S. RupprechtRobert O. Schwenker
    • Cheng T. HorngMichael R. PoponiakHans S. RupprechtRobert O. Schwenker
    • H01L21/331H01L21/74H01L21/762H01L21/8222H01L29/08H01L29/10H01L29/732H01L21/302H01L21/31
    • H01L29/66272H01L21/743H01L21/76229H01L21/76232H01L21/8222H01L29/0804H01L29/1004H01L29/7325Y10S148/131Y10S438/911Y10S438/981
    • A method for device fabrication utilizing a self-aligned process. A combination of advanced semiconductor processing techniques including Deep Dielectric Isolation by reactive-ion etching, etching and refilling, planarizing with oxides and resists, and differential thermal oxidation are used to form devices having small vertical as well as horizontal dimensions. The device region is surrounded by a deep oxide trench which has nearly vertical sidewalls which extend from the epitaxial silicon surface through the N+ subcollector region into the P substrate. The width of the deep trench is about 2 .mu.m to 3 .mu.m. A shallow oxide trench extends from the epitaxial silicon surface to the upper portion of the N+ subcollector and separates the base and collector contact. The surface of the isolation regions and the silicon where the transistor is formed is coplanar. As shown in FIG. 1, the fabricated bipolar transistor has a mesa-type structure. The transistor base dimension is only slightly larger than the emitter. This small base area results in a low collector-base capacitance which is a very important parameter in ultra-high performance integrated circuit devices. Contact to the transistor base in the disclosed structure is achieved by a thick heavily boron doped polysilicon layer which is formed by an etch and refill process and which surrounds the emitter and makes lateral contact to the active base.
    • 一种利用自对准工艺的器件制造方法。 采用先进的半导体处理技术,包括通过反应离子蚀刻的深层电介质隔离,蚀刻和再填充,用氧化物和抗蚀剂进行平面化以及差示热氧化的先进的半导体处理技术来形成具有小垂直和水平尺寸的器件。 器件区域由深氧化物沟槽围绕,其具有从外延硅表面通过N +子集电极区域延伸到P衬底的几乎垂直的侧壁。 深沟的宽度约为2〜3m。 浅氧化物沟槽从外延硅表面延伸到N +子集电极的上部,并分离基极和集电极触点。 隔离区域和形成晶体管的硅的表面是共面的。 如图所示。 如图1所示,制造的双极晶体管具有台面型结构。 晶体管基极尺寸仅略大于发射极。 这种小的基极面积导致集电极基极电容低,这是超高性能集成电路器件中非常重要的参数。 所公开的结构中与晶体管基极的接触是通过厚度很大的硼掺杂的多晶硅层实现的,该多晶硅层通过蚀刻和再填充工艺形成,并且围绕发射极并与活性基底进行横向接触。