Patent ID: 9666779
Date: 2017-05-30
CPC Classifications: H01L

Claim:
1. A light emitting diode chip, comprising an N-type semiconductor layer, a light emitting compound layer, and a P-type semiconductor layer sequentially disposed on a rectangular substrate, and an N-type semiconductor layer that is exposed in the middle of the P-type semiconductor layer after being etched, wherein portions of the P-type semiconductor layer on two sides of the rectangular substrate are respectively provided with a P pad and an N pad; and a region of the P-type semiconductor layer outside of areas provided with the P pad and the N pad is provided with a current barrier layer, and the current barrier layer is provided with a current extension layer; the portions of the P-type semiconductor layer corresponding to the P pad and the N pad are respectively provided with graphical current extension layers, and the graphical current extension layers are respectively provided with electrical-insulating layers; and the back of the P pad and the back of the N pad are respectively provided with reflective layers; wherein, the current extension layer is provided with at least two graphical P extended electrodes, and each of the graphical P extended electrodes is electrically connected to the P pad; and wherein, the N pad is electrically connected to a graphical N extended electrode, the graphical N extended electrode is disposed on and is in contact with the exposed N-type semiconductor layer, and each of the graphical P extended electrodes is in contact with the current extension layer.