| 摘要 |
<p>In order to provide a larger-sized light guide plate that is thin and lightweight and allows more uniform, less uneven and higher-luminance illuminating light to emit from a light exit surface, a sectional shape of each back surface of the rectangular light exit surface satisfies the following 10th-order function formula. X is a position from the origin in a direction parallel to the one side of the light guide plate, and Y is a position from the origin in a direction perpendicular to the one side. Y = A 0 + A 1 x X + A 2 x X 2 + A 3 x X 3 + A 4 x X 4 + A 5 x X 5 + A 6 x X 6 + A 7 x X 7 + A 8 x X 8 + A 9 x X 9 + A 10 x X 10 , -1.3 x 10 5 ‰ A 0 ‰ 2.4 x 10 5 , -2.0 x 10 4 ‰ A 1 ‰ 9.4 x 10 4 , -2.6 x 10 4 ‰ A 2 ‰ 5.7 x 10 4 , -5.5 x 10 3 ‰ A 3 ‰ 2.2 x 10 3 , -2.1 x 10 2 ‰ A 4 ‰ 1.1 x 10 2 , -3.7 x 10 ‰ A 5 ‰ 2.2 x 10, -1.4 x 10 ‰ A 6 ‰ 3.3 x 10, -3.6 ‰ A 7 ‰ 1.5, -7.8 x 10 -2 ‰ A 8 ‰ 3.3 x 10 -2 , -1.2 x 10 -2 ‰ A 9 ‰ 3.2 x 10 -2 , -1.4 x 10 -3 ‰ A 10 ‰ 4.9 x 10 -4 . A planar lighting device includes the light guide plate, and a liquid crystal display apparatus includes the planar lighting device as a backlight unit.</p> |
