SONOS MEMORY DEVICE WITH REDUCED SHORT-CHANNEL EFFECTS
    2.
    发明授权
    SONOS MEMORY DEVICE WITH REDUCED SHORT-CHANNEL EFFECTS 有权
    具有减少短沟道效应SONOS存储器结构

    公开(公告)号:EP1969603B1

    公开(公告)日:2010-07-21

    申请号:EP06842578.4

    申请日:2006-12-18

    申请人: NXP B.V.

    IPC分类号: G11C16/04

    摘要: A non- volatile memory device on a semiconductor substrate having a semiconductor surface layer (2) comprises a source region (12,S), a drain region (12,D), a channel region (CO), a memory element (ME), and a gate (G). The channel region (CO) extends in a first direction (X) between the source region (12,S) and the drain region (12,D). The gate (G) is disposed near the channel region (CO) and the memory element (ME) is disposed in between the channel region (CO) and the gate. The channel region is disposed within a beam-shaped semiconductor layer (4), with the beam-shaped semiconductor layer (4a, 4b, 4c, 4d) extending in the first direction (X) between the source (12,S) and drain (12,D) regions and having lateral surfaces (4a, 4b, 4c, 4d) extending parallel to the first direction (X). The memory element comprises a charge-trapping stack (8) which covers of the lateral surfaces at least the lower surface (4c) directed towards the semiconductor surface layer (2) and the side surfaces (4b, 4d) which are directly connecting to the lower surface (4c) so as to embed the beam-shaped semiconductor layer (4) in a U-shaped form of the charge trapping stack (8).

    METHOD OF MANUFACTURING A BIPOLAR TRANSISTOR
    3.
    发明公开
    METHOD OF MANUFACTURING A BIPOLAR TRANSISTOR 有权
    用于生产双极晶体管

    公开(公告)号:EP2062291A1

    公开(公告)日:2009-05-27

    申请号:EP07826193.0

    申请日:2007-08-29

    申请人: NXP B.V.

    摘要: The invention provides for an alternative and less complex method of manufacturing a bipolar transistor comprising a field plate (17) in a trench (7) adjacent to a collector region (21), which field plate (17) employs a reduced surface field (Resurf) effect. The Resurf effect reshapes the electric field distribution in the collector region (21) such that for the same collector-base breakdown voltage the doping concentration of the collector region (21) can effectively be increased resulting in a reduced collector resistance and hence an increased bipolar transistor speed. The method comprises a step of forming a base window (6) in a first base layer (4) thereby exposing a top surface of the collector region (21) and a part of an isolation region (3). The trench (7) is formed by removing the exposed part of the isolation region (3), after which isolation layers (9,10) are formed on the surface of the trench (7). A second base layer (13) is formed on the isolation layer (10), thereby forming the field plate (17), on the top surface of the collector region (21), thereby forming a base region (31), and on a sidewall of the first base layer (4), thereby forming an electrical connection between the first base layer (4), the base region (31) and the field plate (17). An emitter region (41) is formed on a top part of the base region (31), thereby forming the Resurf bipolar transistor.

    METHOD OF FABRICATING A BIPOLAR TRANSISTOR
    4.
    发明公开
    METHOD OF FABRICATING A BIPOLAR TRANSISTOR 有权
    用于生产双极晶体管

    公开(公告)号:EP1878046A1

    公开(公告)日:2008-01-16

    申请号:EP06728019.8

    申请日:2006-04-24

    申请人: NXP B.V.

    IPC分类号: H01L21/331

    CPC分类号: H01L29/66272 H01L29/0821

    摘要: A method of fabricating a bipolar transistor in a first trench (11) is disclosed wherein only one photolithographic mask is applied which forms a first trench (11) and a second trench (12). A collector region (21) is formed self-aligned in the first trench (11) and the second trench (12). A base region (31) is formed self-aligned on a portion of the collector region (21), which is in the first trench (11). An emitter region (41) is formed self-aligned on a portion of the base region (31). A contact to the collector region (21) is formed in the second trench (12) and a contact to the base region (31) is formed in the first trench (11). The fabrication of the bipolar transistor may be integrated in a standard CMOS process.

    METHOD OF MANUFACTURING A BIPOLAR TRANSISTOR
    5.
    发明授权
    METHOD OF MANUFACTURING A BIPOLAR TRANSISTOR 有权
    用于生产双极晶体管

    公开(公告)号:EP2062291B1

    公开(公告)日:2011-11-02

    申请号:EP07826193.0

    申请日:2007-08-29

    申请人: NXP B.V.

    摘要: The invention provides for an alternative and less complex method of manufacturing a bipolar transistor comprising a field plate (17) in a trench (7) adjacent to a collector region (21), which field plate (17) employs a reduced surface field (Resurf) effect. The Resurf effect reshapes the electric field distribution in the collector region (21) such that for the same collector-base breakdown voltage the doping concentration of the collector region (21) can effectively be increased resulting in a reduced collector resistance and hence an increased bipolar transistor speed. The method comprises a step of forming a base window (6) in a first base layer (4) thereby exposing a top surface of the collector region (21) and a part of an isolation region (3). The trench (7) is formed by removing the exposed part of the isolation region (3), after which isolation layers (9,10) are formed on the surface of the trench (7). A second base layer (13) is formed on the isolation layer (10), thereby forming the field plate (17), on the top surface of the collector region (21), thereby forming a base region (31), and on a sidewall of the first base layer (4), thereby forming an electrical connection between the first base layer (4), the base region (31) and the field plate (17). An emitter region (41) is formed on a top part of the base region (31), thereby forming the Resurf bipolar transistor.

    METHOD OF FABRICATING A BIPOLAR TRANSISTOR
    6.
    发明授权
    METHOD OF FABRICATING A BIPOLAR TRANSISTOR 有权
    用于生产双极晶体管

    公开(公告)号:EP1878046B1

    公开(公告)日:2011-03-02

    申请号:EP06728019.8

    申请日:2006-04-24

    申请人: NXP B.V.

    IPC分类号: H01L21/331

    CPC分类号: H01L29/66272 H01L29/0821

    摘要: A method of fabricating a bipolar transistor in a first trench (11) is disclosed wherein only one photolithographic mask is applied which forms a first trench (11) and a second trench (12). A collector region (21) is formed self-aligned in the first trench (11) and the second trench (12). A base region (31) is formed self-aligned on a portion of the collector region (21), which is in the first trench (11). An emitter region (41) is formed self-aligned on a portion of the base region (31). A contact to the collector region (21) is formed in the second trench (12) and a contact to the base region (31) is formed in the first trench (11). The fabrication of the bipolar transistor may be integrated in a standard CMOS process.

    ELECTRONIC DEVICE AND METHOD FOR MAKING THE SAME
    9.
    发明公开
    ELECTRONIC DEVICE AND METHOD FOR MAKING THE SAME 有权
    电子装置及其制造方法

    公开(公告)号:EP2067167A1

    公开(公告)日:2009-06-10

    申请号:EP07826387.8

    申请日:2007-09-14

    申请人: NXP B.V.

    IPC分类号: H01L21/768 H01L23/48

    摘要: The present invention provides a method for making a vertical interconnect through a substrate. The method makes use of a sacrificial buried layer 220 arranged in between the first side 202 and the second side 204 of a substrate 200. After having etched trenches 206 and 206′ from the first side, the sacrificial buried layer 220 functions as a stop layer during etching of holes 218 and 218′ from the second side, therewith protecting the trenches from damage during overetch of the holes. The etching of trenches is completely decoupled from etching of the holes providing several advantages for process choice and device manufacture. After removing part of the sacrificial buried layer to interconnect the trenches and the holes, the resulting vertical interconnect hole is filled to form a vertical interconnect.

    摘要翻译: 本发明提供了一种通过衬底制造垂直互连的方法。 该方法利用布置在衬底200的第一侧202和第二侧204之间的牺牲埋层220.在具有从第一侧蚀刻的沟槽206和206'之后,牺牲埋层220用作停止层 在从第二侧蚀刻孔218和218'的过程中,由此保护沟槽免于在过孔期间损坏。 沟槽的蚀刻与孔的蚀刻完全分开,为工艺选择和器件制造提供了若干优点。 在去除牺牲埋层的一部分以互连沟槽和孔之后,填充所得到的垂直互连孔以形成垂直互连。

    SONOS MEMORY DEVICE WITH REDUCED SHORT-CHANNEL EFFECTS
    10.
    发明公开
    SONOS MEMORY DEVICE WITH REDUCED SHORT-CHANNEL EFFECTS 有权
    具有减少短沟道效应SONOS存储器结构

    公开(公告)号:EP1969603A2

    公开(公告)日:2008-09-17

    申请号:EP06842578.4

    申请日:2006-12-18

    申请人: NXP B.V.

    IPC分类号: G11C16/04

    摘要: A non- volatile memory device on a semiconductor substrate having a semiconductor surface layer (2) comprises a source region (12,S), a drain region (12,D), a channel region (CO), a memory element (ME), and a gate (G). The channel region (CO) extends in a first direction (X) between the source region (12,S) and the drain region (12,D). The gate (G) is disposed near the channel region (CO) and the memory element (ME) is disposed in between the channel region (CO) and the gate. The channel region is disposed within a beam-shaped semiconductor layer (4), with the beam-shaped semiconductor layer (4a, 4b, 4c, 4d) extending in the first direction (X) between the source (12,S) and drain (12,D) regions and having lateral surfaces (4a, 4b, 4c, 4d) extending parallel to the first direction (X). The memory element comprises a charge-trapping stack (8) which covers of the lateral surfaces at least the lower surface (4c) directed towards the semiconductor surface layer (2) and the side surfaces (4b, 4d) which are directly connecting to the lower surface (4c) so as to embed the beam-shaped semiconductor layer (4) in a U-shaped form of the charge trapping stack (8).