| 摘要 |
PURPOSE:To improve contrast by arranging a double-refraction layer between a pair of polarizers holding a liquid crystal layer between them and setting up the retardation values of areas respectively corresponding to the picture element part and non-picture element part of a liquid crystal cell to respectively different values. CONSTITUTION:The double refraction layer 7 is formed at least on one surface of a pair of polarizers 2, 12 holding the liquid crystal layer 10 between them 2, 12 and the retardation values of the areas of the layer 7 respectively corresponding to the picture element part and non-picture element part of the liquid crystal cell 10 are set up to respectively different values. Especially, it is preferable to adjust the retardation values so that the b;rightness of non-selected picture elements or selected picture elements is equal to that of the non-picture element part at the time of time-dividedly driving the cell 10. Consequently, the contrast of the whole screen can be prevented from being dropped and the quality of display can be improved. |
