Porous thin film having holes and a production method therefor

Abstract

The present application relates to a porous thin film having holes, wherein the holes are formed in the top part and/or the bottom part of the thin film and the holes are linked to the pores of the thin film; and the present invention also relates to a production method for a porous thin film having holes, comprising the use of a particle alignment layer as a mould.

What is claimed is: 
     
         1 . A method for producing a thin film having holes, the method comprising:
 preparing a first substrate having a surface, on which a first intaglio or a first relief is formed;   putting a plurality of particles on the first substrate, and then, inserting parts or all of the particles into pores formed by the first intaglio or relief through a physical pressure so as to form an alignment layer of the particles on the first substrate;   preparing a second substrate having a surface, on which an adhesive layer is formed;   contacting the first substrate, on which the alignment layer of the particles is formed, and the adhesive layer of the second substrate with each other to transfer the alignment layer of the particles onto the second substrate;   coating the alignment layer of the particles transferred onto the second substrate with a polymer so as to form a particle-polymer composite thin film;   removing the adhesive layer formed on the second substrate to separate the particle-polymer composite thin film thereby exposing parts of the particles of a bottom part of the particle-polymer composite thin film to make holes, and then, transferring the particle-polymer composite thin film onto a third substrate so as to contact the holes with a surface of the third substrate; and   removing part of the coated polymer in a top part of the particle-polymer composite thin film to form a plurality of holes, and then, remove the particles through the holes.   
     
     
         2 . A porous thin film having holes,
 wherein the holes are formed in a top part and/or a bottom part of the thin film and linked to pores of the thin film.   
     
     
         3 . The porous thin film having holes of  claim 2   wherein the holes penetrate the pores of the thin film.   
     
     
         4 . The porous thin film having holes of  claim 2 ,
 wherein a size of the holes is smaller than a size of the pores of the thin film.   
     
     
         5 . The porous thin film having holes of  claim 2 ,
 wherein the porous thin film having holes have at least two pores in different shapes and/or sizes.   
     
     
         6 . The porous thin film having holes of  claim 2 ,
 wherein the thin film comprises a porous multilayer thin film having holes, in which at least two porous thin films having holes are stacked each other.   
     
     
         7 . The porous thin film having holes of  claim 6 ,
 wherein in the porous multilayer thin film having holes, the holes of the layers penetrate through one another.