Patent ID: 8088293
Filing Date: 2012-01-03
Classification: B82Y,G03F,H01L

Abstract:
1. A method of forming a reticle configured for imprint lithography, comprising: providing a reticle substrate, the substrate comprising a first material; forming a radiation-imageable layer over the first material; forming a lattice pattern within the radiation-imageable layer, the lattice pattern having a first series of trenches in a first direction and a second series of trenches in a second direction orthogonal to the first direction defining a plurality of square islands of the radiation-imageable layer; while utilizing the lattice-patterned radiation-imageable layer as a mask, subjecting the first material to an etch which transfers the lattice pattern into the first material, the etch forming a plurality of pillars having a square cross-section which extend only partially into the first material, the pillars being spaced from one another by gaps, the first material being quartz, and the pillars thus being quartz projections; and narrowing the gaps with a second material which only partially fills the gaps, said second material being deposited in said gaps by one or both of ALD and CVD, the second material being silicon dioxide, and being formed to be silicon dioxide spacers that partially envelop said square quartz projections.