Patent ID: 6534744
Filing Date: 2003-03-18
Classification: B23K,H01L

Abstract:
A method for manufacturing a display device comprising the steps of:preparing a substrate having a first edge and a second edge substantially perpendicular to each other; forming a semiconductor film over said substrate; scanning a first pulsed laser beam over said semiconductor film in a first scanning direction along said second edge of said substrate so as to irradiate a first region of said semiconductor film, wherein one point of said first region of said semiconductor film is irradiated with at least two shots of said first pulsed laser beam; subsequently scanning a second pulsed laser beam over said semiconductor film in a second scanning direction along said second edge of said substrate so as to irradiate a second region of said semiconductor film, wherein one point of said second region of said semiconductor film is irradiated with at least two shots of said second pulsed laser beam, wherein each of said first and said second pulsed laser beams has a linear shape at a surface of said semiconductor film along said first edge of said substrate, and wherein said second region and said first region have a portion overlapping with each other; and etching said semiconductor film irradiated by said first and said second pulsed laser beams into a plurality of semiconductor layers to form transistors in areas outside said portion.