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    • 5. 发明授权
    • Bipolar transistor having a self emitter contact aligned
    • 具有自发射体触点对准的双极晶体管
    • US5548141A
    • 1996-08-20
    • US441847
    • 1995-05-16
    • Francis J. MorrisJau-Yuann YangDonald L. PlumtonHan-Tzong Yuan
    • Francis J. MorrisJau-Yuann YangDonald L. PlumtonHan-Tzong Yuan
    • H01L29/73H01L21/331H01L29/205H01L29/737H01L29/161
    • H01L29/66318H01L29/7371Y10S148/011Y10S148/072
    • A method of self aligning an emitter contact includes forming a base layer (18) on a portion of a collector layer (16). An interface layer (22) is formed on the base layer (18) such that a portion of the base layer (18) remains exposed. An emitter layer (24) is formed on the collector layer (16), the interface layer (22), and the exposed portion of the base layer (18). An emitter cap layer (26) is formed on the emitter layer (24) over the previously exposed area of the base layer (18). An insulating layer (28) is formed on the interface layer (22). An emitter contact (36) is formed on the emitter cap layer (26) at the previously exposed area of the base layer (18). The insulating layer (28) isolates the emitter contact (36) from the base layer (18) and a subsequently formed base contact (38). The insulating layer (28) ensures isolation between the emitter contact (36) and the base contact (38) despite misalignment of the emitter contact (36) during formation.
    • 自发对准发射极接触的方法包括在集电极层(16)的一部分上形成基极层(18)。 界面层(22)形成在基底层(18)上,使得基底层(18)的一部分保持暴露。 发射极层(24)形成在集电层(16),界面层(22)和基层(18)的露出部分上。 在基底层(18)的预先暴露的区域上的发射极层(24)上形成发射极覆盖层(26)。 绝缘层(28)形成在界面层(22)上。 在基底层(18)的预先暴露的区域处,在发射极盖层(26)上形成发射极触点(36)。 绝缘层(28)将发射极触点(36)与基底层(18)和随后形成的基部触点(38)隔离开来。 绝缘层(28)确保发射极触点(36)和基极触点(38)之间的隔离,尽管发射极触点(36)在形成期间未对准。
    • 6. 发明授权
    • Method of fabricating a semiplanar heterojunction bipolar transistor
    • 制造半平面异质结双极晶体管的方法
    • US5420052A
    • 1995-05-30
    • US230357
    • 1994-04-19
    • Francis J. MorrisJau-Yuann YangDonald L. PlumtonHan-Tzong Yuan
    • Francis J. MorrisJau-Yuann YangDonald L. PlumtonHan-Tzong Yuan
    • H01L29/73H01L21/331H01L29/205H01L29/737H01L21/265
    • H01L29/66318H01L29/7371Y10S148/072
    • A method of fabricating a semiplanar heterojunction bipolar transistor (10) includes forming a subcollector layer (12) and a collector layer (16) onto a substrate layer (14). A collector implant plug (18) is selectively implanted to connect the subcollector layer (12) to the surface of the heterojunction bipolar transistor (10). A second epitaxial growth process causes a base layer (22), an emitter layer (24), and an emitter cap layer (26) to form on the collector layer (16) and the collector implant plug (18). By this process, the base layer (22) is not exposed to subsequent harmful fabrication steps. A base plug region (28) is selectively implanted to connect the base layer (22) to the surface of the heterojunction bipolar transistor (10). A base contact (32) and an emitter contact (30) are selectively formed within the heterojunction region on the base plug region (28) and the emitter cap layer (26), respectively. Lateral parasitic diodes between the base contact (32) and the emitter contact (30) are etched away to isolate the base contact (32) from the emitter contact (30). The emitter cap layer (26), the emitter layer (24), and the base layer (22) are removed from the vicinity of the collector implant plug (18) to allow formation of the collector contact (34).
    • 制造半平面异质结双极晶体管(10)的方法包括在衬底层(14)上形成子集电极层(12)和集电极层(16)。 选择性地注入集电极注入插头(18)以将子集电极层(12)连接到异质结双极晶体管(10)的表面。 第二外延生长工艺使得在集电极层(16)和集电极植入插头(18)上形成基极层(22),发射极层(24)和发射极盖层(26)。 通过该过程,基层(22)不暴露于随后的有害制造步骤。 选择性地注入基座区域(28)以将基极层(22)连接到异质结双极晶体管(10)的表面。 基极触点(32)和发射极触点(30)分别选择性地形成在基插塞区域(28)和发射极盖层(26)上的异质结区域内。 基极触点(32)和发射极触点(30)之间的侧向寄生二极管被蚀刻掉以将基极触点(32)与发射极触点(30)隔离。 发射极帽层(26),发射极层(24)和基底层(22)从集电极植入插头(18)的附近被去除,以形成集电极触点(34)。
    • 7. 发明授权
    • Enhanced performance bipolar transistor process
    • 增强性能双极晶体管工艺
    • US5407842A
    • 1995-04-18
    • US255502
    • 1994-06-08
    • Francis J. MorrisJau-Yuann YangDonald L. PlumtonHan-Tzong Yuan
    • Francis J. MorrisJau-Yuann YangDonald L. PlumtonHan-Tzong Yuan
    • H01L21/331H01L27/06H01L29/737H01L21/265
    • H01L29/66318H01L27/0605H01L29/7371Y10S148/01Y10S148/072
    • This is a method of forming a bipolar transistor comprising: forming a subcollector layer, having a doping type and a doping level, on a substrate; forming a first layer, of the same doping type and a lower doping level than the subcollector layer, over the subcollector layer; increasing the doping level of first and second regions of the first layer; forming a second layer, of the same doping type and a lower doping level than the subcollector layer, over the first layer; increasing the doping level of a first region of the second layer which is over the first region of the first layer, whereby the subcollector layer, the first region of the first layer and the first region of the second layer are the collector of the transistor; forming a base layer over the second layer of an opposite doping type than the subcollector layer; and forming an emitter layer of the same doping type as the subcollector layer over the base layer. Other devices and methods are also disclosed.
    • 这是一种形成双极晶体管的方法,包括:在衬底上形成具有掺杂类型和掺杂水平的子集电极层; 在子集电极层上形成与子集电极层相同的掺杂类型和较低掺杂水平的第一层; 增加第一层的第一和第二区域的掺杂水平; 在第一层上形成与子集电极层相同的掺杂类型和较低掺杂水平的第二层; 增加在第一层的第一区域之上的第二层的第一区域的掺杂水平,由此子集电极层,第一层的第一区域和第二层的第一区域是晶体管的集电极; 在与所述子集电极层相反的掺杂类型的第二层上形成基底层; 并且在基底层上形成与子集电极层相同的掺杂类型的发射极层。 还公开了其它装置和方法。
    • 9. 发明授权
    • Integrated microchip chemical sensor
    • 集成微芯片化学传感器
    • US5822473A
    • 1998-10-13
    • US808816
    • 1997-02-28
    • Gregory Anton MagelTerrance Gus McDonaldJau-Yuann YangHan-Tzong Yuan
    • Gregory Anton MagelTerrance Gus McDonaldJau-Yuann YangHan-Tzong Yuan
    • G01N21/77G02B6/12G02B6/26
    • G01N21/7703G02B6/12004
    • An optical device for sensing properties in an environment such as the presence of a substance or chemical in the zone to be monitored using optical components integrated on a microchip base or substrate. A preferred embodiment introduces a method for fabricating a miniature microchip chemical sensor by integrating a GaAs LED 14 with a polyimide waveguide 48 and a silicon photosensor 16 on the same chip. Light 18 is emitted at the edge of the GaAs LED 14. A portion of the light propagates is detected by a PIN diode 16. A chemical sensitive material 50 is coated on top of a polyimide waveguide 48. When the gas or chemical to which the material is sensitive appears, the light transmitted from the polyimide to air increases, thus the total signal sensed by the photodetector decreases, whereby the change in light signal indicates detection.
    • 一种光学装置,用于使用集成在微芯片基座或基板上的光学元件在诸如物体或化学物质存在的环境中感测特性。 优选实施例通过在同一芯片上集成GaAs LED 14与聚酰亚胺波导48和硅光电传感器16来引入制造微型微芯片化学传感器的方法。 灯18在GaAs LED 14的边缘处发射。一部分光传播由PIN二极管16检测。化学敏感材料50涂覆在聚酰亚胺波导48的顶部。当气体或化学物质 材料敏感出现,从聚酰亚胺向空气传播的光线增加,光电探测器感测到的总信号减小,光信号变化表示检测。
    • 10. 发明授权
    • Method of self aligning an emitter contact in a heterojunction bipolar
transistor
    • 在异质结双极晶体管中自发对准发射极接触的方法
    • US5436181A
    • 1995-07-25
    • US229044
    • 1994-04-18
    • Francis J. MorrisJau-Yuann YangDonald L. PlumtonHan-Tzong Yuan
    • Francis J. MorrisJau-Yuann YangDonald L. PlumtonHan-Tzong Yuan
    • H01L29/73H01L21/331H01L29/205H01L29/737
    • H01L29/66318H01L29/7371Y10S148/011Y10S148/072
    • A method of self aligning an emitter contact includes forming a base layer (18) on a portion of a collector layer (16). An interface layer (22) is formed on the base layer (18) such that a portion of the base layer (18) remains exposed. An emitter layer (24) is formed on the collector layer (16), the interface layer (22), and the exposed portion of the base layer (18). An emitter cap layer (26) is formed on the emitter layer (24) over the previously exposed area of the base layer (18). An insulating layer (28) is formed on the interface layer (22). An emitter contact (36) is formed on the emitter cap layer (26) at the previously exposed area of the base layer (18). The insulating layer (28) isolates the emitter contact (36) from the base layer (18) and a subsequently formed base contact (38). The insulating layer (28) ensures isolation between the emitter contact ( 36) and the base contact (38) despite misalignment of the emitter contact (36) during formation.
    • 自发对准发射极接触的方法包括在集电极层(16)的一部分上形成基极层(18)。 界面层(22)形成在基底层(18)上,使得基底层(18)的一部分保持暴露。 发射极层(24)形成在集电层(16),界面层(22)和基层(18)的露出部分上。 在基底层(18)的预先暴露的区域上的发射极层(24)上形成发射极覆盖层(26)。 绝缘层(28)形成在界面层(22)上。 在基底层(18)的预先暴露的区域处,在发射极盖层(26)上形成发射极触点(36)。 绝缘层(28)将发射极触点(36)与基底层(18)和随后形成的基部触点(38)隔离开来。 绝缘层(28)确保发射极触点(36)和基极触点(38)之间的隔离,尽管发射极触点(36)在形成期间未对准。