Surface Light-Emitting Device and Display Device Using the Same

A surface light-emitting device comprising:

• a hollow housing having a reflection surface arranged on a bottom surface thereof and a light-emitting surface arranged at a position in opposed relation to the reflection surface;
• and
• an LED array including a plurality of LED elements aligned along at least one side surface of the housing;
• wherein the LED array includes n (n:
• natural number of 3 or more) types of LED elements having different light emission colors;
• wherein sequences of the LED elements in the LED array includes:
• a first sequence pattern in which n LED elements including a first LED element having a first light emission color to an nth LED element having an nth light emission color are arranged repetitively in an order of 1, 2, 3, . . . , n from one end of the LED array;
• a second sequence pattern in which n LED elements including a first LED element having a first light emission color to an nth light emission color are arranged repetitively in the order of 1, 2, 3, . . . , n from another end of the LED array;
• and
• a third sequence pattern formed at the inter mediate position between the first sequence pattern and the second sequence pattern;
• wherein one of the LED elements of the same type adjacent to each other in the third sequence pattern is removed, and the light emitted from two LED elements adjacent to both sides of the remaining LED element and the light emitted from the first LED element located at each end of the LED array emit a lower light flux than an averaged light flux of the light emitted from the LED elements of the same type, respectively, located at the other positions.