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    • 7. 发明专利
    • SEMICONDUCTOR DEVICE
    • JPH03283462A
    • 1991-12-13
    • JP8111890
    • 1990-03-30
    • TOSHIBA CORP
    • NAKANO HIROAKIFUSE TSUNEAKIHASEGAWA TAKEHIROSAKUI YASUSHIWATANABE SHIGEYOSHIMASUOKA FUJIO
    • H01L27/082H01L21/8222H01L21/8242H01L27/108
    • PURPOSE:To lessen a bipolar transistor which composes a memory cell in collector current in operation by a method wherein the emitter of the bipolar transistor is lessened more in area as compared with a base contact so as to change a collector current Ico, and an avalanche multiplication phenomenon induced at a junction between a collector and a base is controlled. CONSTITUTION:An N -type forcedly plunged layer 22 is provided onto the surface of a P -type silicon substrate 21 so as to lessen a collector in resistance, and furthermore a P -type epitaxial silicon layer 23 is provided thereon. Phosphorus is introduced into the P -type silicon layer 23 to form an N-type well 24. A field oxide film 25 is formed on the surface, a polysilicon 27 is provided onto an opening provided between the oxide films 25 on a collector lead-out layer 26 deep enough to reach to the N -type forcibly plunged layer 22, and a P -type base region 28 is provided to another opening. An N -type emitter region 29 is formed formed on a part of the P -type base region 28, a thin oxide film 30 is formed on the surface of the substrate, and furthermore a polysilicon 32 is formed through the intermediary of the window of a CVD SiO2 film 31. A P -type layer 33 (outer base) is provided adjacent to the P -type base region 28.
    • 9. 发明专利
    • TRANSISTOR CIRCUIT
    • JPH02126720A
    • 1990-05-15
    • JP28063588
    • 1988-11-07
    • TOSHIBA CORP
    • FUSE TSUNEAKI
    • H01L27/06H01L21/8249H03K17/567H03K19/08H03K19/0944
    • PURPOSE:To prevent the increase of the current consumption and the malfunction and to obtain a high action margin by providing a resistance element between the base and emitter of a transistor of an output circuit. CONSTITUTION:Between the base and emitter of a Tr Q1 of an output circuit 2 of a BiCMOS circuit combining a CMOSFET circuit and a bipolar transistor Tr, a resistance element R is connected. Thus, when the output of a CMOS gate comes to an 'H' level, after the output terminal of the circuit 2 rises up to VCC-phiBE by the Tr Q1, further, it is charged through a resistance element R and rises up to a power source potential VCC completely. When the output of the CMOS gate comes to an 'L' level, the Tr Q1 is turned off, a Tr Q2 is turned on, the output terminal is reduced to the phiBE, thereafter, further, completely falls through the resistance element R and an (n) channel MOSFETM2 in which the CMOS gate is turned on, to a ground potential VSS.