Method of processing light-emitting elements, system and device using the same

A light-emitting element device, comprising:

• a carrier;
• a first matrix, arranged on the carrier, and including a plurality of first light-emitting elements which is grouped into a plurality of first categories comprising a category 1, a category 2, and a category 3 arranged in a first quantity priority;
• and
• a second matrix, arranged on the carrier, and including a plurality of second light-emitting elements which is grouped into a plurality of second categories comprising the category 1, the category 2, and the category 3 arranged in a second quantity priority;
• wherein the category 1, the category 2 and the category 3 are different from each other,
• wherein the plurality of first light-emitting elements and the plurality of second light-emitting elements have a same emission color, and the first quantity priority and the second quantity priority are substantially the same, and
• wherein the plurality of first categories and the plurality of second categories are classified by emission wavelength, luminous intensity level, or chromaticity scale.