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 5):
An inspecting apparatus for inspecting a hexagonal single crystal ingot having a first surface, a second surface opposite to said first surface, a c-axis extending from said first surface to said second surface, and a c-plane perpendicular to said c-axis, said ingot being previously processed by applying a laser beam having a transmission wavelength to said ingot, to said first surface of said ingot to thereby form modified layers inside said ingot and cracks extending from each modified layer along said c-plane, thus forming a separation start point composed of said modified layers and said cracks, whereby asperities corresponding to said modified layers and said cracks are generated on said first surface of said ingot, said inspecting apparatus comprising:\n a holding table for holding said ingot in the condition where said first surface of said ingot is exposed; a point light source for emitting light; a first concave mirror for reflecting said light emitted from said point light source to convert said light into parallel light and then applying said parallel light to said first surface of said ingot, said parallel light impinging on said first surface of said ingot at a predetermined incidence angle; a second concave mirror having a projection surface for forming a projected image, said projected image being formed by reflecting said parallel light on said first surface of said ingot at a reflection angle corresponding to said predetermined incidence angle, said projected image showing the emphasis of said asperities generated on said first surface of said ingot due to the formation of said separation start point inside said ingot; imaging means for detecting said projected image formed on said projection surface of said second concave mirror to thereby form a detected image; and determining means for comparing said detected image with preset conditions to determine the condition of said modified layers and said cracks.

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): 0.8747587042616966
- 35 USC 102 Novelty (BERT): 0.5010350903609059
- Combined Prediction Score: 0.8373863428716175
- Mean Citation Score: 286.162248
- Max Citation Score: 290.52148
- Similarity Product: 249.1836645901633

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