(19)
(11) EP 0 258 285 A1

(12)

(43) Date of publication:
09.03.1988 Bulletin 1988/10

(21) Application number: 87900849.0

(22) Date of filing: 19.01.1987
(51) International Patent Classification (IPC): 
H01L 29/ 78( . )
H01L 21/ 263( . )
H01L 29/ 04( . )
H01L 21/ 20( . )
H01L 21/ 336( . )
H01L 29/ 06( . )
(86) International application number:
PCT/GB1987/000030
(87) International publication number:
WO 1987/004563 (30.07.1987 Gazette 1987/17)
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 25.01.1986 GB 19860001830

(71) Applicant: PLESSEY OVERSEAS LIMITED
Ilford Essex IG1 4AQ (GB)

(72) Inventor:
  • OAKLEY, Raymond, Edward
    Brackley Northants (GB)

(74) Representative: Sorenti, Gino 
Intellectual Property Department The Plessey Company plc 2-60 Vicarage Lane
Ilford Essex IG1 4AQ
Ilford Essex IG1 4AQ (GB)

   


(54) METHODS FOR FABRICATING TRANSISTORS AND MOS TRANSISTORS FABRICATED BY SUCH METHODS