Method of severing a semiconductor device composite
First Claim
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1. A method of severing a semiconductor device composite which comprises a carrier having a main surface and a semiconductor layer sequence arranged on the main surface comprising:
- forming a separating trench in the semiconductor device composite by a first laser cut such that the separating trench only partially severs the semiconductor device composite in a vertical direction running perpendicular to the main surface;
applying a second laser cut that only partially severs the carrier along the separating trench;
applying a third laser cut that only partially severs the carrier along the separating trench; and
severing the semiconductor device composite completely along the separating trench with a severing cut with a laser.
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Abstract
A method of severing a semiconductor device composite includes a carrier having a main surface and a semiconductor layer sequence arranged on the main surface including forming a separating trench in the semiconductor device composite by a first laser cut such that the separating trench only partially severs the semiconductor device composite in a vertical direction running perpendicular to the main surface, and severing the semiconductor device composite completely along the separating trench with a severing cut with a laser.
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Citations
12 Claims
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1. A method of severing a semiconductor device composite which comprises a carrier having a main surface and a semiconductor layer sequence arranged on the main surface comprising:
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forming a separating trench in the semiconductor device composite by a first laser cut such that the separating trench only partially severs the semiconductor device composite in a vertical direction running perpendicular to the main surface; applying a second laser cut that only partially severs the carrier along the separating trench; applying a third laser cut that only partially severs the carrier along the separating trench; and severing the semiconductor device composite completely along the separating trench with a severing cut with a laser. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification