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    • 1. 发明授权
    • Semiconductor device and method therefore
    • 半导体器件及其方法
    • US5145795A
    • 1992-09-08
    • US543233
    • 1990-06-25
    • Paul W. SandersBernard W. Boland
    • Paul W. SandersBernard W. Boland
    • H01L21/762
    • H01L21/76297H01L2224/48091H01L2224/73265H01L2924/1305H01L2924/13091H01L2924/30107H01L2924/3011Y10S148/168Y10S438/977
    • An improved high frequency dielectrically isolated (DIC) transistor (100) or integrated circuit is obtained by providing a highly doped single crystal semiconductor region (112) coupled to the device reference terminal (16') and extending between front (98) and rear (61) faces of the semiconductor die. This allows the reference terminal (16', 116) to be coupled to the package ground plane without use of wire bonds, thereby lowering the common mode impedance. The desired structure is formed in connection with DIC devices (100) by etching first (66) and second (77) nested cavities into a single crystal substrate (60). The cavities (66) form protruding islands (821, 822) of single crystal semiconductor having a height (80+68) about equal the final die thickness (110) and which, after conventional DIC processing using an oxide isolation layer (86) and a poly handle (88), are exposed by grinding away the poly handle (88) to expose the highly doped, single crystal reference terminal feed-through (112).
    • 通过提供耦合到器件参考端子(16')并在前面(98)和后面(98)之间延伸的高掺杂单晶半导体区域(112),获得改进的高频介电隔离(DIC)晶体管(100)或集成电路 61)面。 这允许参考端子(16',116)在不使用引线接合的情况下耦合到封装接地层,从而降低共模阻抗。 通过将第一(66)和第二(77)嵌套空穴蚀刻到单晶衬底(60)中,与DIC器件(100)相关地形成期望的结构。 空腔(66)形成高度(80 + 68)的大约等于最终管芯厚度(110)的单晶半导体的突出岛(821,822),并且在使用氧化物隔离层(86)的常规DIC处理和 通过研磨多晶硅手柄(88)以暴露高度掺杂的单晶参考端子馈通(112)来暴露多晶硅手柄(88)。
    • 2. 发明授权
    • Process for dielectrically isolated semiconductor structure
    • 介电隔离半导体结构的工艺
    • US4649630A
    • 1987-03-17
    • US718255
    • 1985-04-01
    • Bernard W. BolandPaul W. Sanders
    • Bernard W. BolandPaul W. Sanders
    • H01L21/762H01L21/76
    • H01L21/76297Y10S148/043Y10S148/085Y10S148/122Y10S438/928Y10S438/969Y10S438/977
    • A process is disclosed for controllably providing dielectrically isolated semiconductor regions having a uniform and well defined thickness. Grooves are formed in a first surface of a semiconductor substrate and then a dielectric layer is formed covering that surface and the grooves extending into the surface. A layer of backing material such as polycrystalline silicon is formed overlying the dielectric layer. A semiconductor substrate is then thinned to form a new surface with portions of the dielectric layer and backing material exposed at that surface. A semiconductor layer is epitaxially grown overlying the new surface with the semiconductor layer having a monocrystalline structure where it is grown on exposed regions of the original substrate and having a polycrystalline structure otherwise. An oxidation masking layer is formed overlying those portions of the semiconductor layer which have a monocrystalline structure. Those portions of the semiconductor layer which are not covered by the oxidation masking layer are then oxidized to form an oxide extending through the semiconductor layer to the underlying dielectric layer. This oxide plus the original dielectric layer thus surround and isolate individual regions in which a portion of the original substrate has an epitaxial layer of semiconductor material grown thereon.
    • 公开了一种用于可控地提供具有均匀且良好限定厚度的介电隔离的半导体区域的方法。 在半导体衬底的第一表面中形成沟槽,然后形成覆盖该表面的电介质层和延伸到表面中的沟槽。 形成覆盖在电介质层上的诸如多晶硅的背衬材料层。 然后将半导体衬底变薄以形成新的表面,其中介电层和背衬材料的部分暴露在该表面。 外延生长半导体层,其中半导体层具有单晶结构,其中它生长在原始衬底的暴露区域上,否则具有多晶结构。 在半导体层的具有单晶结构的那些部分上形成氧化掩模层。 未被氧化掩模层覆盖的半导体层的那些部分然后被氧化,以形成延伸穿过半导体层的氧化物到下面的介电层。 因此,该氧化物加上原始电介质层围绕并隔离其中原始衬底的一部分具有在其上生长的半导体材料的外延层的各个区域。
    • 6. 发明申请
    • THROUGH SUBSTRATE VIAS
    • 通过基板VIAS
    • US20110272823A1
    • 2011-11-10
    • US13188084
    • 2011-07-21
    • Paul W. SandersMichael F. PetrasChandrasekaram Ramiah
    • Paul W. SandersMichael F. PetrasChandrasekaram Ramiah
    • H01L21/28H01L23/48
    • H01L21/76898H01L23/481H01L2924/0002H01L2924/12044H01L2924/3011H01L2924/00
    • Through substrate vias (TSVs) are provided after substantially all high temperature operations needed to form a device region of a first thickness proximate the front surface of a substrate wafer by: (i) from the front surface, forming comparatively shallow vias of a first aspect ratio containing first conductors extending preferably through the first thickness but not through the initial wafer thickness, (ii) removing material from the rear surface to form a modified wafer of smaller final thickness with a new rear surface, and (iii) forming from the new rear surface, much deeper vias of second aspect ratios beneath the device region with second conductors therein contacting the first conductors, thereby providing front-to-back interconnections without substantially impacting wafer robustness during manufacturing and device region area. Both aspect ratios are desirably about ≦40, usefully ≦10 and preferably ≦5.
    • 在基本上所有的高温操作之后提供通过衬底通孔(TSV),所述高温操作是通过以下步骤形成靠近衬底晶片的前表面的第一厚度的器件区域:(i)从前表面形成第一方面的较浅的通孔 比例包含优选地穿过第一厚度而不是通过初始晶片厚度的第一导体,(ii)从后表面去除材料以形成具有新的后表面的较小最终厚度的改性晶片,以及(iii)从新的 后表面,在器件区域下方的第二宽高比的深度更深的通孔,其中其中第二导体接触第一导体,从而在制造和器件区域区域中基本上不影响晶片坚固性而提供前后互连。 两个长宽比理想地约为< nlE; 40,有用地< 10;优选< nlE; 5。
    • 7. 发明申请
    • THROUGH SUBSTRATE VIAS
    • 通过基板VIAS
    • US20100264548A1
    • 2010-10-21
    • US12425159
    • 2009-04-16
    • Paul W. SandersMichael F. PetrasChandrasekaram Ramiah
    • Paul W. SandersMichael F. PetrasChandrasekaram Ramiah
    • H01L23/48H01L21/768
    • H01L21/76898H01L23/481H01L2924/0002H01L2924/12044H01L2924/3011H01L2924/00
    • Through substrate vias (TSVs) are provided after substantially all high temperature operations needed to form a device region (26) of a first thickness (27) proximate the front surface (23) of a substrate wafer (20, 20′) by: (i) from the front surface (23), forming comparatively shallow vias (30, 30′) of a first aspect ratio containing first conductors (36, 36′) extending preferably through the first thickness (27) but not through the initial wafer (20) thickness (21), (ii) removing material (22″) from the rear surface (22) to form a modified wafer (20′) of smaller final thickness (21′) with a new rear surface (22′), and (iii) forming from the new rear surface (22′), much deeper vias (40, 40′) of second aspect ratios beneath the device region (26) with second conductors (56, 56′) therein contacting the first conductors (36, 36′), thereby providing front-to-back interconnections without substantially impacting wafer robustness during manufacturing and device region area. Both aspect ratios are desirably about ≦40, usefully ≦10 and preferably ≦5.
    • 在通过以下方式形成靠近基板晶片(20,20')的前表面(23)的第一厚度(27)的器件区域(26)所需的基本上所有高温操作之后提供穿过衬底通孔(TSV):( i)从前表面(23)形成第一纵横比比较浅的通孔(30,30'),该第一纵横比包含优选地延伸穿过第一厚度(27)但不延伸穿过初始晶片的第一导体(36,36') 20)厚度(21),(ii)从后表面(22)去除材料(22“)以形成具有新的后表面(22')的较小最终厚度(21')的改性晶片(20'), 和(iii)从新的后表面(22')形成在装置区域(26)下面的第二高宽比的更深的通孔(40,40'),其中第二导体(56,56')在其中接触第一导体 36,36'),从而在制造和器件区域中基本上不影响晶片坚固性,从而提供前后互连 区域。 两个长宽比理想地约为< nlE; 40,有用地< 10;优选< nlE; 5。