HYBRID DIFFUSER SHEET FOR BACK LIGHT UNIT

摘要

A diffuser sheet for a back light unit is provided to improve optical characteristic efficiency by consecutively forming a projection or a groove of a stripe band form having a hemispherical section. A projection(10) has a stripe band form and a hemispherical section(15) to the upper side of the base(11). The Projections adhere closely to each other. The projections is consecutively arranged into a mutually cross type. When the diameter of a globe is L, the height of the hemispherical section is the same as 1/2L or smaller than 1/2L. A plurality of minute projections are formed in order to be protruded in the outer surface of the projection.