Patent ID: 8927437
Filing Date: 2015-01-06
Classification: B05D,B82Y,C09D,C09K,G02B,H01L,Y10T

Abstract:
1. A process for preparing an antireflection structure comprising the following steps: a) coating a layer of an organic solvent solution of a block copolymer having first polymer blocks and second polymer blocks on a substrate modified with an organic material, wherein said first polymer is selected from the group consisting of poly( b) solvent annealing the resultant coating layer from step a) by placing the coated substrate from step a) in an atmosphere containing a vapor of nonpreferential solvent so as to form a film of the block copolymer having the second polymer blocks as a matrix thereof and the first polymer blocks having a gyroid nanostructure in the matrix; c) selectively degrading said first polymer blocks to form correspondingly gyroid nanochannels in the matrix of said film; d) filling an inorganic filler into the gyroid nanochannels in the matrix of said film in a liquid mixture of a filler precursor under so-gel conditions the process further comprising d′) aging the inorganic filler filled in said film under controller humidity at room temperature to 70° C. for a period of 1-6 hours, prior to step e); and the process further comprising wherein in step d) the inorganic filler is a ceramic oxide or mixed oxide selected from the group consisting or Al, Si, Ti, Zn, Zr and Ba; MgF2 or CaF2; and e) removing the second polymer block matrix of said layer by using an ultraviolet light exposure, calcination, organic solvent, a supercritical fluid or a combination thereof to obtain an layer of porous inorganic gyroid network on the substrate.