PATENT CLAIM ANALYSIS

Application Number: 15876001
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-06
Patent Classification: ["117", "058000"]

Abstract:
Embodiments described herein provide processes for forming and removing epitaxial films and materials from growth wafers by epitaxial lift off (ELO) processes. In some embodiments, the growth wafer has edge surfaces with an off-axis orientation which is utilized during the ELO process. The off-axis orientation of the edge surface provides an additional variable for controlling the etch rate during the ELO process and therefore the etch front may be modulated to prevent the formation of high stress points which reduces or prevents stressing and cracking the epitaxial film stack. In one embodiment, the growth wafer is rectangular and has an edge surface with an off-axis orientation rotated by an angle greater than 0° and up to 90° relative to an edge orientation of <110> at 0°.

Claim (Index 2):
The method of  claim 1 , wherein the orientation of each of the edge surfaces includes an off-axis orientation that is at an angle greater than 0\u00b0 and less than 90\u00b0 with respect to the crystallographic orientation of the piece of semiconductor material, the crystallographic orientation being a <110> crystal lattice orientation.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 86.0
- Lexical Diversity: 1.65854
- Patent Class: 117.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['13210138', '14861821', '15109845', '14839755', '14723223']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7391751957570489
- 35 USC 102 Novelty (BERT): 0.5425690699948258
- Combined Prediction Score: 0.7195145831808266
- Mean Citation Score: 250.61567
- Max Citation Score: 371.3171
- Similarity Product: 357.1115763898373

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test