Patent ID: 7476003

Claim:
A surface light source device comprising: a board; and a plurality of light emitting diode clusters arranged in a matrix of rows and columns on the board, each of the light emitting diode clusters including a red light emitting diode, a green light emitting diode and a blue light emitting diode arranged in a triangular configuration, wherein the light emitting diode clusters are grouped into A, E, C and D clusters according to locations of the red light emitting diodes, the A, E, C and D clusters having the red light emitting diodes located top, right, bottom and left, respectively, from a center of the triangular configuration, wherein the matrix of the light emitting diode clusters includes alternating first and second type rows arranged repeatedly from top to bottom of the matrix, terminating with a second type row, wherein each of the first type rows has first type cluster arrays of the light emitting diode clusters arranged in a repeating order of E, C, D and C from left to right, terminating with D and C sequentially, and wherein each of the second type rows has second type cluster arrays of the light emitting diode clusters arranged in a repeating order of A, D, A and D from left to right, terminating with A and D sequentially.