| 摘要 |
PURPOSE: An LCD(Liquid Crystal Display) is provided to enhance a photo reactivity depending on the voltage of a liquid crystal cell by extending a twist angle of a liquid crystal layer in a moderate range and to prevent the degradation of a contrast ratio depending on the increase of pixel number. CONSTITUTION: An upper phase difference film(110) having 7.8x0.001 of refractive index difference, 51 micrometer of thickness, and 85 degrees of optical axis angle is attached onto an upper polarizer(100) having 45 degrees of absorptive axis angle to restrain the excessive change of a contrast ratio. An upper glass substrate(101) is attached onto the upper phase difference film, and An indium tin oxide film(102) is layered onto the upper glass substrate in a specific thickness. A lower phase difference film(111) having 7.8x0.001 of refractive index difference, 6.229 micrometer of thickness, and 119 degrees of optical axis angle is attached onto a lower polarizer(104) having 71 degrees of absorptive axis angle. A lower glass substrate(105) is layered on the lower phase difference film, and a transparent conductive film(106) is layered on the lower glass substrate. The upper and lower phase difference films enhance a contrast ratio.
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