| 摘要 |
PURPOSE:To eliminate the inverting regions of the liquid crystal electrooptical element and to widen the visual angle thereof by forming the element in such a manner that the retardation of an optically anisotropic body has a fluctuation in a very small region. CONSTITUTION:An upper polarizing plate 101, a liquid crystal cell 102, the optically anisotropic body 103, a lower polarizing plate 104, and a reflecting plate 105 are provided. This liquid crystal cell 102 consists of a transparent substrate 121 which is formed with transparent electrodes 122 consisting of ITO having a prescribed film thickness on the surface and has extremely good flatness, an oriented layer 123 and a liquid crystal 124. The liquid crystal of DELTAn=0.15 is used for the liquid crystal 24 and is twist-oriented at 210 deg. counterclockwise from the upper substrate of the cell having 6.0mum cell gap d toward the lower substrate. The retardation DELTAnd of this time is 0.90mum. On the other hand, the optically anisotropic body 103 is formed by pressing a uniaxially stretched polycarbonate film having a prescribed thickness with a metallic plate having fine ruggedness and has 0.957mum retardation DELTAnd in average and the fluctuation in the very small region; therefore, the inversion of the liquid crystal electrooptical element is eliminated. |
