Patent ID: 8906783

Claim:
A method for cutting brittle sheet-shaped structure comprising: (a) providing a first brittle sheet-shaped structure having a cutting surface; (b) forming a first cutting line on the cutting surface of the first brittle sheet-shaped structure, and dividing the cutting surface into a first section and a second section, wherein the first section has a predetermined shape; (c) forming at least one second cutting line on the second section of the cutting surface along part of the first cutting line or a tangent line of the first cutting line, and taking the first cutting line as endpoints to form a plurality of third cutting lines on the second section of the cutting surface, wherein the elongation of each of the plurality of third cutting lines is across the first section; and (d) splitting the first brittle sheet-shaped structure along the first cutting line, the at least one second cutting line, and the plurality of third cutting lines to obtain a second brittle sheet-shaped structure having the predetermined shape.