| 摘要 |
A liquid crystal panel unit ( 2 ) includes, on its side from which light enters, a micro-lens substrate ( 1 ) having: a first micro-lens array including a first lens ( 5 ) for converging, for converging, on aperture sections ( 17 R. 17 G. 17 B) of respective picture elements in a liquid crystal display element, the plurality of the light beams whose respective incident angles are different from one another; and a second micro-lens array having a second lens ( 7 ) for collimating principal rays of the respective light beams. The second lens ( 7 ) is substantially trapezoid so that the lens includes slanted surfaces ( 7 b .7 b) directing its convex parts towards the light incident side. With this configuration, it is possible to realize a single-panel mode color-filterless projection-type liquid crystal display device with high light-using efficiency at a low cost, without deteriorating the light-using efficiency.
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