Chip mit einem integrierten Schaltkreis und einer Schutzvorrichtung gegen Angriffe

Details

Veröffentlichungs-Nr.

EP2535932

Aktenzeichen

EP12168455

Anmeldetag

18. Mai 2012

Veröffentlichung

19. März 2014

Erteilung

19. März 2014

Rechtsraum

EP

IPC

H01L23/58H01L21/763

Abstract

The integrated circuit chip (31) has n-type well (5) and p-type well (7) formed in an upper portion of a p-type semiconductor substrate (3). A protection device, which ensures the chip against attacks, has a trench between the wells. The trench has insulated walls (27) filled with a conductive material (29). The trench extends from upper surfaces of the wells to a lower portion of the substrate below the wells. A detector (33) senses a modification of a stray capacitance between the conductive material and a region of the chip. Independent claims are also included for the following: (1) a method of forming an integrated circuit chip; and (2) a method of protecting an integrated circuit chip.

Anmelder

Firma

STMicroelectronics (Rousset) SAS

Land

🇫🇷 Frankreich

Fachgebiete