Light emitting component board group, light emitting device and liquid crystal display device

A light emitting component board group comprising:

• a first light emitting component board formed in a rectangular shape having at least two first short sides and at least two first long sides, the first light emitting component board including a first input connector, a first light emitting component group including a plurality of light emitting components, and a first output connector that are connected to each other in this order to configure a first circuit, the first input connector being provided close to one of the first short sides, the first output connector being provided close to another one of the first short sides;
• a second light emitting component board formed in a rectangular shape having at least two second short sides and at least two second long sides and arranged in adjacent to the first light emitting component board such that the first long sides and the second long sides are arranged to be substantially parallel to each other, the second light emitting component board including a second output connector, a second light emitting component group including a plurality of light emitting components, and a second input connector that are connected to each other in this order to configure a second circuit, the second output connector being provided close to one of the second short sides that is close to the one of the first short sides, the second input connector being provided close to another one of the second short sides that is close to the other one of the first short sides;
• and
• a fourth light emitting component board formed in the rectangular shape having at least two fourth short sides and at least two fourth long sides and arranged in adjacent to the first light emitting component board such that the fourth long sides and the first long sides are arranged to be substantially parallel to each other;
• wherein the first light emitting component board includes a fifth input connector, a fifth light emitting component group including a plurality of light emitting components, and a fifth output connector that are connected to each other in this order to configure a fifth circuit that is insulated from the first circuit and, the fifth input connector is provided close to the one of the first short sides, and the fifth output connector is provided close to the other one of the first short sides,
• the fourth light emitting component board includes a sixth output connector, a sixth light emitting component group including a plurality of light emitting components, and a sixth input connector that are connected to each other in this order to configure a sixth circuit, the sixth output connector is provided close to one of the fourth short sides that is close to the one of the first short sides, the sixth input connector is provided on another one of the fourth short sides, and
• a first forward voltage drop value of the first light emitting component group is substantially equal to a fifth forward voltage drop value of the fifth light emitting component group, and a second forward voltage drop value of the second light emitting component group is substantially equal to a sixth forward voltage drop value of the sixth light emitting component group.