Abstract:
PROBLEM TO BE SOLVED: To provide a lithography mask capable of forming an aperture of an interval smaller and larger than the critical interval simultaneously in a sure manner, and a manufacturing method thereof. SOLUTION: The lithography mask comprises first regions 50, 52, 54, and 56 having a non-transparent layer, and semi-transparent second regions and third regions 60, 62, 64, 66, 70, 72, 74 and 76 which are different in optical thickness. In order to form through holes 34 and 36 whose interval is smaller than the critical interval, a first section 44 having the second regions 62 and 64, and the third regions 72 and 74 is provided. The second regions and the third regions are disposed alternately and are surrounded by the first region 50. In order to form through holes 32 and 38 whose interval is larger than the critical interval, second sections 42 and 46 having the third regions 70 and 76 are provided. The third regions are surrounded by the second regions 60 and 66 which are surrounded by the first regions 50 joined at multiple positions. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
Lithography mask for the lithographic patterning of a resist layer on a substrate having first regions, in which the lithography mask has a nontransparent layer, and second and third regions, which differ in terms of the optical thickness of the lithography mask and in which the lithography mask is at least semitransparent. The lithography mask comprises a first section having a plurality of second regions and a plurality of third regions, which are arranged alternately and surrounded by a first region, for the lithographic production of resist openings at distances which are less than a predetermined limit distance. Furthermore, the lithography mask comprises a second section having a multiplicity of third regions, each of which is surrounded by a second region surrounded by a multiply contiguous first region, for the lithographic production of resist openings at distances which are greater than a predetermined limit distance.