Patent ID: 6456347
Filing Date: 2002-09-24
Classification: G02F

Abstract:
A liquid crystal display device comprising:a liquid crystal panel having a first transparent substrate and a second transparent substrate in pair spaced a predetermined distance from each other in an opposed relation, transparent electrodes and an orientation film provided on an opposed inner surface of each of the first and second transparent substrates, and a nematic liquid crystal provided between the first and second transparent substrates; a first retardation plate provided on an outer surface of the first transparent substrate of the liquid crystal panel; a first polarizer plate provided on the first retardation plate; a second retardation plate provided on an outer surface of the second transparent substrate of the liquid crystal panel; a second polarizer plate provided on the second retardation plate; and a semi-transmissive film provided on the inner surface of the first transparent substrate and having both a light transmissive property and a light reflective property; wherein backlight emitting means is provided on the first polarizer plate for internal illumination; wherein an outer surface of the second polarizer plate serves as a display surface; and wherein the first retardation plate is conditioned to change the polarization state of the light emitted from the backlight used in the transmissive mode to be the same polarization state as the light reflected from the semi-transmissive film in the reflective mode.