Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
  • H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
  • H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
  • H01L21/74—Making of localized buried regions, e.g. buried collector layers, internal connections substrate contacts
  • H01L21/743—Making of internal connections, substrate contacts
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof  ; Multistep manufacturing processes therefor
  • H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
  • H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
  • H01L29/08—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L29/0821—Collector regions of bipolar transistors

Applications Claiming Priority (2)

Publications (1)

Family

ID=10626764

Family Applications (1)

Country Status (5)

Family Cites Families (4)

• 1987
  • 1987-11-11 GB GB878726367A patent/GB8726367D0/en active Pending
• 1988
  • 1988-11-11 GB GB8915454A patent/GB2219137B/en not_active Expired - Fee Related
  • 1988-11-11 AU AU26208/88A patent/AU2620888A/en not_active Abandoned
  • 1988-11-11 JP JP50886688A patent/JPH02502956A/en active Pending
  • 1988-11-11 WO PCT/GB1988/000996 patent/WO1989004555A1/en not_active Application Discontinuation
  • 1988-11-11 EP EP19880909569 patent/EP0346409A1/en not_active Withdrawn

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