Surface light source led device

A surface light source LED (light-emitting diode) device, comprising:

• a circuit board having an connection circuit disposed on an upper layer of the circuit board;
• at least one power input electrically coupled to the circuit board;
• and
• at least two LED bar elements disposed on the circuit board and electrically coupled to the at least one power input;
• wherein each of the at least two LED bar elements includes a plurality of LED bars linearly arranged on the circuit board;
• each of the plurality of LED bars has a straight strip structure, and includes a plurality of LED dies of the same type disposed therein, the plurality of LED dies are arranged with equal intervals there between, the equal intervals are between 0.15 mm and 2.8 mm;
• wherein intervals between each of the plurality of LED bars are the same as the equal intervals between each of the plurality of LED dies;
• each of the plurality of LED bars has a wide-angle lens disposed thereon such that a cross-sectional light-emitting angle of each of the plurality of LED bars is diffused;
• and wherein the wide-angle lens is integrally formed during the molding of each of the plurality of LED bars, and covers upon the plurality of LED dies of each of the plurality of LED bars;
• wherein each one of the wide-angle lens of the plurality of LED bars has an upper surface, the cross section of the upper surface is a double-arced shape, the two sides surfaces of the wide-angle lens are perpendicular shape, and the wide-angle lens is in a strip structure;
• wherein a high reflection optical structure is disposed on each one of the upper surface of the wide-angle lens, the high reflection optical structure has a strip structure and covers upon the middle crease of the double-arced shape, a length of the high reflection optical structure is the same as a length of the wide-angle lens.