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Title:
THIN-FILM TRANSISTOR AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2003069030
Kind Code:
A
Abstract:

To provide a thin-film transistor having high reliability and good characteristics at a process temperature ≤500°C by using low price non-annealed glass as a substrate.

The surface of a polycrystalline silicon film doped with boron (B) or phosphorus (P) is oxidized by using ozone to form a silicon oxide film of 4-20 nm on the surface of the polycrystalline silicon. Through this treatment, the interfacial structure of the gate insulating layer/channel layer becomes controllable so that the thin-film transistor having less variation of characteristics can be manufactured on the anneal-free glass substrate.


Inventors:
HORIKOSHI KAZUHIKO
OGATA KIYOSHI
TAMURA TAKUO
NAKAHARA MIWAKO
OKURA OSAMU
ORITSUKI RYOJI
NAKANO YASUSHI
SHIBA TAKEO
Application Number:
JP2001257127A
Publication Date:
March 07, 2003
Filing Date:
August 28, 2001
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
G02F1/1368; G09F9/00; G09F9/30; G09F9/35; H01L21/336; H01L29/49; H01L29/786; (IPC1-7): H01L29/786; G02F1/1368; G09F9/00; G09F9/30; G09F9/35; H01L21/336
Domestic Patent References:
JPH1079516A1998-03-24
JPH04177765A1992-06-24
JPH1197691A1999-04-09
JPH04326731A1992-11-16
JPH08195494A1996-07-30
Attorney, Agent or Firm:
Sakuta Yasuo