View angle controlling sheet and liquid crystal display apparatus using the same

摘要

A view angle controlling sheet to be disposed between the light source and the liquid crystal panel of a liquid crystal display apparatus, wherein the view angle controlling sheet has lens parts having a trapezoidal cross sectional shape arranged by a predetermined interval and the wedge parts between the adjacent lens parts is filled with a light absorbing material such that the wedge part has the top end disposed to the observer side and the bottom surface to the light source side and with the premise that the angle formed by the slant face portion of the wedge part and the normal of the light output plane is theta, theta is in a range of 3°<=theta<=15°.