Patent ID: 7133096
Filing Date: 2006-11-07
Classification: G02F

Abstract:
1. A liquid crystal display device employing a normally black mode, the liquid crystal display device comprising: a pixel having a reflection portion and a transmission portion; a first polarization plate on a viewing surface side on a viewing surface side of the liquid crystal display device; a phase difference plate on the viewing surface side of the liquid crystal display device; and a second polarization plate on a back surface of the liquid crystal display device, wherein an orientation mode of a liquid crystal of the liquid crystal display device is a twist orientation, wherein a ratio dt/dr between a gap dt of said transmission portion and a gap dr of said reflection portion satisfies a relationship of 1.7≦dt/dr≦2.05, and wherein a phase difference value of said phase difference plate on the viewing surface side at a wavelength of 550 nm is 310 nm or more.