摘要 |
As technology scales, the mask cost rises sharply. It was generally believed that three-dimensional mask-programmed read-only memory (3D-MPROM) would become economically un-viable. The present invention discloses a three-dimensional printed memory (3D-P). It is a type of 3D-MPROM and uses shared data-masks to print data. By forming the mask-patterns for a plurality of distinct mass-contents on a same data-mask, the share of the data-mask cost on each mass-content is significantly reduced. For mass publication, the minimum feature size of the 3D-P is preferably less than 45 nm. |