| 摘要 |
There is provided a spread illuminating apparatus in which transmission efficiency of light is enhanced and in which a good liquid crystal display screen is provided. Positioning means (25, 25) are provided on a lower plate inner surface (15) of a frame (13) that covers a light conductive member (3). The positioning means (25, 25) push up the light conductive member (3) relative to a transparent substrate (2) in the direction of the thickness of the light conductive member (3) (light source (5)) (toward an upper plate inner surface (14) of the frame) by the thickness t of a reflection preventive film (20) attached to the lower surface of the transparent substrate (2) . Thus, an exit surface (9) of the light conductive member (3) does not overlap the reflection preventive film (20), and a good display can be realized on the liquid crystal screen. Further, the exit surface (9) of the light conductive member (3) and an incident surface (8) of the transparent substrate (2) can be fixedly held at the same height position, and thus light can be transmitted efficiently.
|
