62‐3: Distinguished Paper: High Precise Laser Glass Cutting for Future Display

As one of the various attempts to reduce the size of display bezel, high‐precision glass cutting process is required to be developed for future displays. In this study, the Bessel‐beam Laser Cutting (BLC) process has been studied, which is capable of minimizing the thermal deformation of the black m...

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Bibliographic Details
Published in:SID International Symposium Digest of technical papers 2022-06, Vol.53 (1), p.815-818
Main Authors: Jung, Woohyun, Kim, Hyungsik, Voronov, Alexander, Park, Sunggyu, Ryu, Jekil, Jeong, SeongHo, Roh, Cheol Lae
Format: Article
Language:English
Subjects:
Diffractive optics
Glass and other amorphous materials
Heat affected zone
Laser beam cutting
Laser cutting
Laser materials processing
Micro machining
Temperature effects
Thermal degradation
Transparent materials
Ultrafast optics
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Summary:As one of the various attempts to reduce the size of display bezel, high‐precision glass cutting process is required to be developed for future displays. In this study, the Bessel‐beam Laser Cutting (BLC) process has been studied, which is capable of minimizing the thermal deformation of the black matrix (BM) material on glass. In an experimental setup composed of IR ps laser with bessel‐beam optics, the smallest thermal degradation of BM and the highest cutting precision are achieved as 40μm and 10μm, respectively. When reducing thermal effects caused by high‐order beams without sacrificing glass breaking strength, effective heat affected zone (HAZ) could be reduced nearby 30um width from the cutting line. This high precision cutting technology will contribute to realize extremely narrow bezel display near future.
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.15617