LAMINATED QUARTER-WAVE PLATE, CIRCULARLY POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME, AND METHOD FOR MANUFACTURING THE SAME

摘要

PURPOSE: To provide a quarter-wave plate suited to compensate birefringence, a circularly polarizing plate and a liquid crystal display device using the same, and a method for manufacturing the same. CONSTITUTION: Representing in-plane principal refractive indexes by nx, ny and the refractive index in the thickness direction by nz, the quarter-wave plate is constructed by laminating a quarter-wave plate satisfying a relation Nz=(nx-nz)/(nx-ny)>1.05 and a half-wave plate in such a way that respective directions of in-plane lag axes are made to intersect each other. Also the circularly polarizing plate is constructed by laminating a polarizing plate on the quarter-wave plate.