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Optimization of UV laser scribing process for light emitting diode sapphire wafers

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Optimization of UV laser scribing process for light emitting diode sapphire wafers

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  • Author: Ashwini Tamhankara and Rajesh Patel
Billions of light emitting diodes LEDs are used today in traffic control, automotive headlights, flat panel display technology, mobile devices, back lighting, projection, and general illumination applications. With the dramatic growth in LEDs, manufacturers are looking for technologies to increase production yield and decrease cost. Sapphire wafer singulation into miniature dies is one of the critical steps used in blue LED manufacturing.

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