Patent ID: 8511880

Claim:
An edge type light source module having a light emitting surface, the light emitting surface comprising at least one middle light emitting region and at least one edge light emitting region, the edge type light source module comprising: a first edge type light emitting device, wherein a light generated by the first edge type light emitting device is emitted from the middle light emitting region; and a second edge type light emitting device, stacked with the first edge type light emitting device, wherein a light generated by the second edge type light emitting device is emitted from the edge light emitting region, wherein if the middle light emitting region is a lighting region with a brightness value of L1, the edge light emitting region adjacent to the lighting region is a light leakage region, a predetermined brightness value of the light leakage region is L2, and a compensation brightness value (L2′) of the light leakage region satisfies L2′=L2−(L1*k1*R1), where L1*k1*R1 is a first light leakage brightness value, k1 is a first compensation ratio, R1 is a first compensation proportion, 0<k1≦1, and 20%≦R1≦60%, and if the edge light emitting region is a lighting region with a brightness value of L3, the middle light emitting region adjacent to the lighting region is a light leakage region, a predetermined brightness value of the light leakage region is L4, and a compensation brightness value (L4′) of the light leakage region satisfies L4′=L4−(L3*k2*R2), where L3*k2*R2 is a second light leakage brightness value, k2 is a second compensation ratio, R1 is a second compensation proportion, 0<k2≦1, and 10%≦R2≦50%.