Patent ID: 7132334
Filing Date: 2006-11-07
Classification: H01L

Abstract:
1. A method of code programming a ROM device having bit lines oriented in a first direction on or within a substrate, word lines formed relative to the bit lines in a second direction such that the bit lines and word lines define code positions, and a first implant resistant material located over the substrate, the method comprising the following; forming a plurality of code openings over the code positions and in the first implant resistant material to form a first code pattern which comprises substantially all of the code openings; forming a developable anti-reflective coating layer over the substrate to fill substantially all of the code openings; forming a second implant resistant layer over the developable anti-reflective coating layer; processing a portion of the second implant resistant layer to form a second code pattern which comprises a portion of the code openings of the first code pattern; and removing the developable anti-reflective coating layer from the code openings of the second code pattern.