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    • 4. 发明授权
    • Complementary bipolar and CMOS on SOI
    • SOI上的互补双极和CMOS
    • US5164326A
    • 1992-11-17
    • US860794
    • 1992-03-30
    • Juergen A. FoerstnerBor-Yuan HwangJohn E. Schmiesing
    • Juergen A. FoerstnerBor-Yuan HwangJohn E. Schmiesing
    • H01L21/331H01L21/8222H01L21/8238H01L21/8249H01L27/06H01L27/12
    • H01L29/66265H01L21/8222H01L21/8238H01L21/8249H01L27/0623H01L27/1203Y10S148/15
    • A method for fabricating BiCMOS on SOI. An SOI wafer (14) with an oxide layer (17) and a nitride layer (16) has areas isolated by a LOCOS or mesa isolation (13). A region (15) is defined for CMOS structures from which the insulating layers (17,16) are removed. A gate oxide (21), a polycrystalline silicon layer (22), and a second insulating layer (23,24) is formed. A region for emitters (26) is defined and nitride deposited to form a spacer (27). An oxide layer (28) is grown over the polycrystalline silicon (22) within the emitter region (26). The wafer (14) is etched to the underlying monocrystalline silicon (18) forming base contacts (31). A polycrystalline silicon spacer (36) is formed from a second polycrystalline layer (43) and an oxide spacer (40) is deposited. A region for bipolar collectors (32) and CMOS areas (34) is defined and a spacer (38) deposited.
    • 在SOI上制造BiCMOS的方法。 具有氧化物层(17)和氮化物层(16)的SOI晶片(14)具有通过LOCOS或台面隔离隔离的区域(13)。 对于从其去除绝缘层(17,16)的CMOS结构定义区域(15)。 形成栅极氧化物(21),多晶硅层(22)和第二绝缘层(23,24)。 限定用于发射器(26)的区域,并且氮化物沉积以形成间隔物(27)。 在发射极区域(26)内的多晶硅(22)上生长氧化物层(28)。 将晶片(14)蚀刻到形成基底触点(31)的下面的单晶硅(18)。 多晶硅间隔物(36)由第二多晶层(43)形成,并且沉积氧化物间隔物(40)。 限定了用于双极捕获器(32)和CMOS区域(34)的区域并且沉积了间隔物(38)。
    • 10. 发明授权
    • Tungsten coated silicon fingers
    • 镀钨硅指
    • US07226802B2
    • 2007-06-05
    • US10914006
    • 2004-08-06
    • Paul M. OcanseyJuergen A. Foerstner
    • Paul M. OcanseyJuergen A. Foerstner
    • H01L21/00
    • B81B3/0005B81B2201/0235B81C1/0096B81C2201/112C23C16/14G01P15/0802G01P15/125
    • Methods and apparatus are provided for preparing sensing fingers for use in a highly integrated accelerometer. The method includes steps for forming a tungsten/tungsten silicide coating on a silicon finger. The tungsten/tungsten silicide coating adds mass to the silicon finger. The method includes steps of forming silicon fingers from layers of silicon, oxides, and capping material. The silicon fingers are then exposed to tungsten containing gases under conditions to promote the formation of a tungsten silicide seed layer on the exposed silicon surfaces. The tungsten layer is then grown to a desired thickness through a growth step. The coated silicon fingers display improved resistance to stiction as compared to uncoated silicon fingers.
    • 提供了用于准备用于高度集成的加速度计中的传感指的方法和装置。 该方法包括在硅指状物上形成钨/硅化钨涂层的步骤。 钨/硅化钨涂层增加了硅胶的质量。 该方法包括从硅,氧化物和封盖材料层形成硅指的步骤。 然后在允许在暴露的硅表面上形成硅化钨晶种层的条件下将硅指暴露于含钨气体的条件下。 然后通过生长步骤将钨层生长至所需厚度。 与未涂覆的硅指相比,涂覆的硅指显示改进的粘性阻力。