PATENT CLAIM ANALYSIS

Application Number: 15908307
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-09
Patent Classification: ["438", "007000"]

Abstract:
Disclosed herein is an inspecting method for a semiconductor ingot in which modified layers parallel to an upper surface of the ingot and cracks extending from each modified layer are previously formed as a separation start point. The inspecting method includes a light applying step of applying light from a light source to the upper surface of the ingot, the light impinging on the upper surface at a predetermined incidence angle, a projected image forming step of reflecting the light on the upper surface of the ingot to obtain reflected light and then forming a projected image from the reflected light, the projected image showing the emphasis of asperities generated on the upper surface of the ingot due to the formation of the modified layers and the cracks inside the ingot, an imaging step of detecting the projected image to form a detected image, and a determining step of comparing the detected image with preset conditions to determine the condition of the modified layers and the cracks.

Claim (Index 1):
A semiconductor ingot inspecting method comprising:\n a separation start point forming step of setting the focal point of a laser beam having a transmission wavelength to a semiconductor ingot inside said ingot at a predetermined depth from an upper surface of said ingot, said predetermined depth corresponding to the thickness of a wafer to be produced from said ingot, and next applying said laser beam to said upper surface of said ingot as relatively moving said focal point and said ingot to thereby form modified layers parallel to said upper surface of said ingot and cracks extending from each modified layer, thus forming a separation start point composed of said modified layers and said cracks; a light applying step of applying light from a light source to said upper surface of said ingot after performing said separation start point forming step, said light impinging on said upper surface of said ingot at a predetermined incidence angle; a projected image forming step of reflecting said light on said upper surface of said ingot to obtain reflected light after performing said light applying step, and then forming a projected image from said reflected light, said projected image showing the emphasis of asperities generated on said upper surface of said ingot due to the formation of said modified layers and said cracks inside said ingot; an imaging step of detecting said projected image to form a detected image after performing said projected image forming step; and a determining step of comparing said detected image with preset conditions to determine the condition of said modified layers and said cracks after performing said imaging step.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 88.0
- Lexical Diversity: 2.41667
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15165686', '14953679', '15173227', '14988378', '15083635']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8746621208334568
- 35 USC 102 Novelty (BERT): 0.5023380764401666
- Combined Prediction Score: 0.8374297163941278
- Mean Citation Score: 286.162248
- Max Citation Score: 290.52148
- Similarity Product: 243.1968553793621

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