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Jig-free laser welding of Eagle XG glasses by using a picosecond pulsed laser |
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| Authors: | Ham Seung Sik Kim Chang Hwan Choi Soo Ho Lee Jong Hoon Lee Yong Joong Byeon Clare C Lee Ho |
| Affiliation: | 1.Graduate School, Department of Mechanical Engineering, Kyungpook National University, Daegu, 41566, Korea ;2.School of Industrial Technology, Division of Mechanical Engineering Technology, Yeungnam University, Daegu, 42415, Korea ;3.Laser Application Center, Kyungpook National University, Daegu, 41061, Korea ;4.School of Mechanical Engineering, Kyungpook National University, Daegu, 41566, Korea ; |
| Abstract: | We have performed the jig-free laser welding on the alkaline earth boro-aluminosilicate glass (Eagle XG, Corning), which is commonly used in the display devices, by using a picosecond pulsed laser. Two sheets of Eagle XG glasses with 0.5 mm thickness each were placed one on top of the other. Due to the jig-free laser welding, there was a very thin air gap between the two glasses, and the experiment proceeded by line scanning. The welding performance was evaluated by observing the optical images from the top view and the bottom view and comparing the line images. We could bond the two glass surfaces on the laser spot, and achieve the successful welding of such glasses in the scanning speeds from 10 mm/s to 50 mm/s with the laser irradiance from 50 TW/cm2(500 J/cm2) to 83 TW/cm2 (830 J/cm2). We demonstrated the feasibility of jig-free laser welding on the Eagle XG glass with the welding strength up to 50 MPa. |
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