PATENT CLAIM ANALYSIS

Application Number: 15765349
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["356", "237200"]

Abstract:
Provided is an apparatus for inspecting the back surface of an epitaxial wafer, capable of detecting defects in the back surface of an epitaxial wafer. An epitaxial wafer back surface inspection apparatus has an optical system including an annular fiber optic illuminator and an imaging unit which are placed perpendicular to the back surface of an epitaxial wafer; and a scanning unit operating the optical system in parallel with the back surface to scan the back surface. A light source of the annular fiber optic illuminator is composed of either blue LEDs or red LEDs.

Claim (Index 7):
The method of inspecting a back surface of an epitaxial wafer, according to  claim 4 , wherein in the detecting defects, dot-like defects in the back surface of the epitaxial wafer are selected, and a defect of the dot-like defects which has a diameter equal to or larger than a first diameter and equal to or less than a second diameter and has dark part in a center is detected as a susceptor pinhole.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 1.92308
- Patent Class: 356.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15757856', '10887786', '11311943', '13709493', '12154593']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6713850069878855
- 35 USC 102 Novelty (BERT): 0.5119304453442984
- Combined Prediction Score: 0.6554395508235268
- Mean Citation Score: 181.483124
- Max Citation Score: 230.1973
- Similarity Product: 142.85646191507578

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

Dataset: test