Darwin Precisions Corporation

Mei-Lun Li

Wen-Yi Lin

Yun-Pei Yang

A metal mask and an inspecting method thereof are provided for improving quality standard detection. The metal mask has a first and a second long side and plural pattern regions. The method includes the followings steps Based on the pattern regions adjacent to the first and second long sides, a first and a second reference straight line adjacent to the first and second long sides respectively are defined. Then, a first maximum offset length between the pattern regions and the first reference straight line is measured. A second maximum offset length between the pattern regions and the second reference straight line is measured. When a difference between the first and second maximum offset lengths is less than or equal to 20 μm, the metal mask is determined to meet an inspecting standard.

Growing community of inventors

Hsinchu County, Taiwan

Mei-Lun Li