| 摘要 |
PURPOSE:To improve the light transmittance of the liquid crystal panel, to brighten the projected image of the projection type liquid crystal display device and to relatively improve the brightness in the peripheral part with respect to the brightness in the central part of a screen by setting the lens pitch of microlenses existing in the peripheral part within the liquid crystal panel surface larger than the lens pitch of the microlenses existing in the central part. CONSTITUTION:Microlens arrays 2 are formed in correspondence to respective picture element apertures 3 on the surface of the transmission type liquid crystal panel 1. The lens pitch (Xn, Yn) in the peripheral part is larger than the lens pitch (X0, Y0) of the central part in the lens pitches of the microlens arrays 2 arranged in proximity in spite of forming the picture element apertures 3 at the equal pitch. Namely, the bore of the microlenses corresponding to the picture elements existing in the peripheral part is larger than the bore of the microlenses corresponding to the picture elements existing in the central part and, therefore, the light condensing capacity of the latter lenses is larger than the light condensing capacity of the former lenses. |
