Laser-induced cleavage of LCD glass as full-body cutting

Kojiro Karube; Norio Karube

doi:10.1117/12.759025

23 February 2008 Laser-induced cleavage of LCD glass as full-body cutting

Kojiro Karube, Norio Karube

Proceedings Volume 6880, Laser-based Micro- and Nanopackaging and Assembly II; 688007 (2008) https://doi.org/10.1117/12.759025
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

The laser-induced cleavage of LCD glass is free from the generation of cullet and micro-crack, dispensing with the subsequent processes of grinding and cleansing. This paper deals with the theory and experiment of this technology which can improve the manufacturing of flat panel displays. Different from the preceding technology using CO₂ laser irradiation which can realize surface absorption and scribing only, we have realized the surface/inward absorption of laser beam inside glass by matching the absorption characteristics of glass and the emission wavelengths of appropriate lasers and have succeeded in realizing the full-body cleavage of LCD glass. We have also succeeded to develop the technologies, which can eliminate the shortcomings so far considered to be inherent to this full-body cleavage, i.e. size effect. The completion of the full-body cleavage in this way can simplify the manufacturing process of LCD.

Citation Download Citation

Kojiro Karube and Norio Karube "Laser-induced cleavage of LCD glass as full-body cutting", Proc. SPIE 6880, Laser-based Micro- and Nanopackaging and Assembly II, 688007 (23 February 2008); https://doi.org/10.1117/12.759025

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