Patent ID: 9731492
Date: 2017-08-15
CPC Classifications: B32B,Y10T

Claim:
1. A substrate peeling method comprising: preparing a combined structure of a substrate and a support substrate, wherein the substrate is attached to the support substrate; partially separating the substrate from the support substrate at a predetermined area in a first corner of the combined structure; sequentially applying a first pulling-up force to the combined structure along a first direction from the first corner of the combined structure to a center of the combined structure to separate the substrate from the support substrate, wherein the separation starts from the predetermined area of the substrate; and sequentially applying a second pulling-up force to the combined structure along the first direction from the center of the combined structure to a second corner of the combined structure to completely separate the substrate from the support substrate, wherein the sequentially applying of the first pulling-up force and the sequentially applying of the second pulling-up force are performed using a plurality of absorption pads having different diameters, wherein the plurality of absorption pads includes a first absorption pad and a second absorption pad, and wherein the sequentially applying the first pulling-up force includes: