(19)
(11) EP 0 702 848 A1

(12)

(43) Date of publication:
27.03.1996 Bulletin 1996/13

(21) Application number: 94919335.0

(22) Date of filing: 03.06.1994
(51) International Patent Classification (IPC): 
H01L 21/ 8247( . )
(86) International application number:
PCT/US1994/006224
(87) International publication number:
WO 1994/029898 (22.12.1994 Gazette 1994/28)
(84) Designated Contracting States:
DE FR GB

(30) Priority: 11.06.1993 US 19930075813

(71) Applicant: NATIONAL SEMICONDUCTOR CORPORATION
Santa Clara, California 95052 (US)

(72) Inventor:
  • BERGEMONT, Albert
    Santa Clara, CA 95014 (US)

(74) Representative: Bowles, Sharon Margaret, et al 
BOWLES HORTON Felden House Dower Mews High Street
Berkhamsted Hertfordshire HP4 2BL
Berkhamsted Hertfordshire HP4 2BL (GB)

   


(54) METHOD OF ELIMINATING POLY END CAP ROUNDING EFFECT