| 摘要 |
A spread illuminating apparatus is provided in which a light source assembly disposed at one side surface of a light guide plate includes red LEDs, green LEDs and blue white LEDs. The blue white LEDs each include a blue LED and a yellow phosphor and are adapted to emit a red component light and a green component light as well as a blue light. The blue white LED functions not only as a light source for blue light but also as a light source for red and green lights, whereby the numbers of the red LEDs, the green LEDs and the blue white LEDs are equalized. All the LEDs are arranged along the one side surface of the light guide plate at substantially regular intervals. Color heterogeneity generated when a plurality of kinds of LEDs are used is reduced, and thereby an area required for mixing colors is reduced.
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