| 摘要 |
PURPOSE:To obtain inexpensively a liquid crystal display element having noncolored and light background and wide view field angle by arranging at least one optical display plate between a first substrate and a first polarizing plate, or between a second substrate and a second polarizing plate, and arranging a voltage impressed part to function as white display part and a voltage unimpressed part as black display part. CONSTITUTION:A first substrate 1 and a second substrate 1' disposed facing oppositely to each other, and a first polarizing plate 3 and a second polarizing plate 4 disposed to both sides of a liquid crystal cell 5, are provided. Further, at least one optical display plate 10 is arranged between the first substrate 1 and the first polarizing plate 3, or between the second substrate 1' and the second polarizing plate 4, and a voltage impressed part is allowed to function as white display part and a voltage unimpressed part is allowed to function as black display part. For example, linearly polarized light 103 having passed through the first polarizing plate 3 is transformed to elliptically polarized light 101' when it passes through the liquid crystal cell 5. The elliptically polarized light 101' is transformed to elliptically polarized light 102' which is approximately equal to linearly polarizeed light by placing an optical delay plate 10 above the liquid crystal cell 5, allowing the light 102' to become sensible to human eyes through the second polarizing plate 4. Thus, a liquid crystal display device having noncolored light background and wide view field angle is obtd. inexpensively. |
