This disclosure provides a pixel structure of inorganic light emitting diode. A first power line is disposed between two adjacent first sub-pixel and second sub-pixel, and the first sub-pixel and second sub-pixel are electrically connected to the same first power line. Also, a first reference line is disposed on an opposite side of the first sub-pixel away from the second sub-pixel, and a second reference line is disposed on an opposite side of the second sub-pixel away from the first sub-pixel. The first sub-pixel and the second sub-pixel have substantially the same length.