FILM HAVING LOW REFRACTIVE INDEX AND METHOD FOR PRODUCING THE SAME, ANTI-REFLECTION FILM AND METHOD FOR PRODUCING THE SAME, COATING LIQUID SET FOR FILM HAVING LOW REFRACTIVE INDEX, SUBSTRATE HAVING MICROPARTICLE-LAMINATED THIN FILM, AND METHOD FOR PRODUCING THE SAME, AND OPTICAL MEMBER
申请人:Hitachi Chemical Company, Ltd.
公开号:EP2347896A1
公开(公告)日:2011-07-27
Provided is a film having a low refractive index, which can be formed under normal temperature and pressure while obtaining a lower refractive index, has excellent adhesion with a solid substrate, and does not lose geometric optical properties, such as the diffusibility or light-harvesting capability attributed to the microstructure. Also disclosed is a method for producing the same. The film having a low refractive index is obtained by causing an electrolyte polymer and microparticles to be alternately adsorbed on the surface of a solid substrate and bringing the resulting microparticle-laminated film into contact with a silicon compound solution in order to bond the solid substrate with microparticles and microparticles with microparticles. The silicon compound solution is selected from (1) the hydrolysis product of alkoxysilane (I) wherein the functional groups are formed from hydrolyzable groups and non-hydrolyzable organic groups, and the condensation reaction product thereof, (2) the hydrolysis product of a mixture of alkoxysilane (I) and alkoxysilane (II) wherein the functional groups are formed from hydrolyzable groups alone, and the condensation reaction product thereof; and (3) a mixture of hydrolysis product and condensation product thereof according to (1) and alkoxysilane (II).
本发明提供了一种具有低折射率的薄膜,该薄膜可在常温常压下形成,同时获得较低的折射率,与固体基底的附着力极佳,并且不会失去几何光学特性,例如微观结构所带来的扩散性或采光能力。此外,还公开了生产上述材料的方法。通过使电解质聚合物和微粒子交替吸附在固体基底表面,并使得到的微粒子层压薄膜与硅化合物溶液接触,从而使固体基底与微粒子、微粒子与微粒子结合,得到具有低折射率的薄膜。硅化合物溶液选自 (1) 烷氧基硅烷(I)的水解产物(其中官能团由可水解基团和不可水解有机基团形成)及其缩合反应产物,(2) 烷氧基硅烷(I)和烷氧基硅烷(II)混合物的水解产物(其中官能团仅由可水解基团形成)及其缩合反应产物;(3) 根据(1)和烷氧基硅烷(II)的水解产物和缩合产物的混合物。