Method of late programming read only memory devices

Details Method of late programming read only memory devices Method of late programming read only memory devices

1981-05-28

1982-12-28

Ozaki, G.

Metal working

Method of mechanical manufacture

Assembling or joining

29576B, 29577C, 29578, 148187, H01L 2122

Patent

active

043654053

ABSTRACT:
A method of making a ROM and encoding it late in the method. Encoding is by ion implantation. A second level of polycrystalline used for resistors outside the ROM is used as the encoding mask.

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