METHOD FOR LASER SCRIBING OF A NON-METALLIC PLATE Russian patent published in 2021 - IPC B23K26/364 H01L21/42 

Abstract RU 2761834 C1

FIELD: metal processing.

SUBSTANCE: invention relates to a method for laser processing of non-metallic plates and can be used for scribing semiconductor, ceramic and glassy materials. The required groove depth is achieved due to the sequential action of two laser pulses. The energy density in each pulse is determined depending on the specific sublimation energy of the plate material, the absorption index of the material at the wavelength of laser radiation, the reflection coefficient and the required groove depth. At the same time, the dimensionless parameter equal to the product of the groove depth by the absorption index of the material at the wavelength of laser radiation is greater than 2.

EFFECT: reducing energy costs when scribing non-metallic plates.

1 cl, 1 tbl

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RU 2 761 834 C1

Authors

Kovalenko Aleksandr Fedorovich

Dates

2021-12-13Published

2021-03-29Filed