Patent ID: 7423715
Filing Date: 2008-09-09
Classification: G02F

Abstract:
1. A liquid crystal display device comprising: a liquid crystal cell in which liquid crystal molecules are held between a pair of substrates that produce an electric field corresponding to a voltage applied thereto; and a pair of optical retardation plates arranged to hold said liquid crystal cell therebetween; wherein each of said optical retardation plates includes first and second optical films stacked in a thickness direction to form an optical film stack, said first optical film includes a plurality of refractive elliptic bodies having optical axes which are tilted to have one component along the thickness direction and another component directed to a first predetermined side of the thickness direction of the optical film stack and whose tilt angles are set to have slight differences consecutively in the thickness direction, and said second optical film includes a plurality of refractive elliptic bodies having optical axes which are tilted to have one component along the thickness direction of the optical film stack and another component directed away from said first predetermined side and whose tilt angles are set to have slight differences consecutively in the thickness direction.