Patent ID: 9614017
Date: 2017-04-04
CPC Classifications: H01L

Claim:
1. An active matrix organic light emitting display (AMOLED) backplane structure, comprising multiple sub-pixels arranged in an array, wherein in each of the sub-pixels, the AMOLED backplane comprises: a thin-film transistor (TFT) substrate, a planarization layer formed on the TFT substrate, a pixel electrode formed on the planarization layer, a pixel definition layer formed on the pixel electrode, and a photo spacer formed on the pixel definition layer; the TFT substrate comprises therein a switch TFT, a drive TFT, and a capacitor; the pixel definition layer comprises an opening to expose a portion of the pixel electrode the TFT substrate comprises a corrugation structure arranged in an area corresponding to the opening of the pixel definition layer, the corrugation structure comprising a plurality of raised sections and a recessed section formed between every two adjacent ones of the raised sections, the raised sections and the recessed sections having vertical dimensions identical to each other; and an upper surface of a portion of the planarization layer and a portion of the pixel electrode that correspond to and are located above the corrugation structure have curved configurations corresponding to the corrugation structure.