Patent ID: 8129611

Claim:
A light-scattering film comprising: a medium made of a transparent conductive material; and a light scatterer embedded in said medium, wherein a surface of said light-scattering film has an average value of an angle of 5 degrees or less, said angle being defined between an upper surface of said light-scattering film and a main surface of a substrate on which said light-scattering film is formed in any cross section having a length of 300 to 1200 nm in a direction parallel to said main surface of said substrate, wherein an average outer diameter of said light scatterer is in a range of 360 nm to 600 nm, said light scatterer is approximated by spheroid having a center rotation axis and said outer diameter is a value two times an average of a distance from said center rotation axis to a surface of said light scatterer, wherein an average of pitch of said light scatterer is 1.0 μm or below, and said pitch of said light scatterer is a distance between two adjacent members of said light scatterer, and wherein the light scatterer is disposed so as not to overlap another light scatterer in the medium when viewed in a direction perpendicular to the substrate.