Patents by Inventor Noriaki Mizuhara

Noriaki Mizuhara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Field effect transistor having comb-shaped lead-out electrodes capable of reducing parasitic capacitance therebetween
    Patent number: 6376886
    Abstract: In a field effect transistor including a semiconductor substrate which is divided into an active area and an inactive area, a comb-shaped gate electrode having a trunk portion formed on the inactive area and gate fingers formed on the active area, source ohmic electrodes and drain ohmic electrodes formed on the active area and alternating with the gate fingers of the comb-shaped gate electrodes, a comb-shaped source lead-out electrode having a trunk portion formed on the inactive area and fingers each connected to one of the source ohmic electrodes and formed on the active area, and a comb-shaped drain lead-out electrode having a trunk portion formed on the inactive area and fingers each connected to one of the drain ohmic electrodes and formed on the active area, edges of the fingers of the comb-shaped source lead-out electrode recede from edges of respective ones of the source ohmic electrodes, or edges of the fingers of the comb-shaped drain lead-out electrode recede from edges of respective ones of the dr
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: April 23, 2002
    Assignee: NEC Corporation
    Inventor: Noriaki Mizuhara
  • Field effect transistor having comb-shaped lead-out electrodes capable of reducing parasitic capacitance therebetween
    Publication number: 20010025966
    Abstract: In a field effect transistor including a semiconductor substrate which is divided into an active area and an inactive area, a comb-shaped gate electrode having a trunk portion formed on the inactive area and gate fingers formed on the active area, source ohmic electrodes and drain ohmic electrodes formed on the active area and alternating with the gate fingers of the comb-shaped gate electrodes, a comb-shaped source lead-out electrode having a trunk portion formed on the inactive area and fingers each connected to one of the source ohmic electrodes and formed on the active area, and a comb-shaped drain lead-out electrode having a trunk portion formed on the inactive area and fingers each connected to one of the drain ohmic electrodes and formed on the active area, edges of the fingers of the comb-shaped source lead-out electrode recede from edges of respective ones of the source ohmic electrodes, or edges of the fingers of the comb-shaped drain lead-out electrode recede from edges of respective ones of the dr
    Type: Application
    Filed: March 5, 2001
    Publication date: October 4, 2001
    Inventor: Noriaki Mizuhara