| 摘要 |
PURPOSE:To increase a visual field angle by bringing the peak part regions of the projecting parts of the rugged surface of the first material layer of micro-unit lenses into tight contact with the surface of a liquid crystal cell. CONSTITUTION:The peak part regions 11 of the projecting parts of the rugged surface of the first material layer 1 of a microlens array sheet 52 are brought into tight contact with the surface 10 of the liquid crystal cell 51, by which a part of the first material layer 1 is eventually brought into contact with the surface 10 of the liquid crystal cell having a relatively small difference in refractive index and the prescribed critical reflection condition is destroyed in a part of the retroreflection route on the lens surface and, therefore, the external light infiltrating the inside of the microlens array sheet 52 is guided into the liquid crystal cell 51 without making retroreflection. The retroreflection on the lens surface is thus suppressed. Namely, the disadvantage of the narrow visual field angle of the liquid crystal display is overcome by the extremely simple constitution of merely providing the observation surface side of the liquid crystal cell 51 with the microlens array, by which the good display grade is eventually obtd. in the observation direction of a wide range. The display grade which compares favorably with other display systems, such as CRT system, is obtd. |
