Abstract:
A method of implementing a new reticle for manufacturing semiconductor devices on a wafer which involves performing measurements (420) on the reticle and assigning an initial exposure dose (470) by using a predetermined algorithm (450). The exposure control system (490) utilizes reticle CD data (430, 440) for automatically calculating reticle exposure offset values, i.e. reticle factors (510). A correlation of reticle size deviations (500) to calculated reticle factors (510) is used to derive a reticle factor (510) for the new reticle. The derived reticle factor (510) is then used to predict (450) an initial exposure condition for the new reticle which is applied (470) to the lithography tool (410) for achieving a wafer design dimension.
Abstract:
A photomask (100), method of designing, of fabricating, of designing, a method of inspecting and a system for designing the photomask (100). The photomask (100), includes: a cell region (110), the cell region (110) comprising one or more chip regions (155 A, 155B, 155C, 155D), each chip region (155 A, 155B, 155C, 155D) comprising a pattern of opaque and clear sub-regions corresponding to features of an integrated circuit chip and one or more kerf regions (160A, 160B, 160C, 160D), each kerf region (160A, 160B, 160C, 160D) comprising a pattern of opaque and clear sub-regions corresponding to features of an integrated circuit kerf; a clear region (125A) formed adjacent to a side of a copy region (170A, 170B), the copy region (170A, 170B) comprising opaque and clear sub-regions that are copies of at least a part of the cell region (110); and an opaque region (115) between the clear region (125A, 125B, 125C, 125D) and the cell region (110).