METHOD FOR LASER ANNEALING OF NON-METALLIC PLATES Russian patent published in 2021 - IPC H01L21/428 B23K26/402 B23K26/53 

Abstract RU 2757537 C1

FIELD: technological processes.

SUBSTANCE: invention relates to the field of technological processes and can be used for laser annealing of wafers made of semiconductor, ceramic and glassy materials. The method for laser processing of non-metallic plates according to the invention includes preheating the plates to a temperature determined from the proposed equation, based on the condition of the thermal strength of the plates, and irradiating the surface of the plates with continuous laser radiation with an energy density sufficient to reach the annealing temperature on the surface.

EFFECT: invention ensures the elimination of the destruction of the plates by thermoelastic stresses in the process of laser annealing and an increase in the yield of suitable plates.

1 cl, 1 dwg

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RU 2 757 537 C1

Authors

Kovalenko Aleksandr Fedorovich

Dates

2021-10-18Published

2021-03-29Filed