1n : a computer program segment not permanently maintained in in ternal storage. [SEMATECH] 2 n : the technique of repeatedly using the same areas of internal storage during different stages of a computer program. [SEMATECH] 3 v : to
load a segment of a computer program into a storage
area occupied by parts of the program not currently needed. [SEMATECH] 4 n : the
precision with which successive masks can be aligned with previous patterns on a silicon
wafer. [1994 National Technology
Roadmap for Semiconductors] 5 n : in
semiconductor wafers and
flat panel display substrates, a
vector quantity defined at every point on the
wafer or
substrate. It is the difference, O, between the
vector position,

, of a
substrate geometry, and the
vector position of the corresponding point,

, in an overlaying pattern, which
may consist of photoresist. [Adapted from SEMI P18-92 and D8-94]
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