PATENT CLAIM ANALYSIS

Application Number: 15994661
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["438", "005000"]

Abstract:
A sector-shaped wafer piece is processed according to the shape of the piece obtained by dividing a wafer into quarters. Information is collected on the shapes of four patterns of the quarter wafer pieces different in the position of a circular arc of an outer periphery and on processing feed quantities corresponding to the shapes of the four patterns. A pattern is selected by calculating a region of a square having vertical and horizontal sides equal to the two sides of the quarter wafer piece, imaging each of the sides to search for the presence/absence of a target pattern, and selecting that one of the four patterns to which the held quarter wafer piece corresponds. The held quarter wafer piece is processed along division lines with a processing feed quantity corresponding to the selected pattern.

Claim (Index 1):
A processing method for a sector-shaped wafer piece, for processing a sector-shaped quarter wafer piece obtained by dividing into quarters a disk-shaped wafer which has a device formed in each of regions on its front surface partitioned by a plurality of crossing division lines and which has at its outer periphery a notch indicative of its crystal orientation, the processing being performed along the division lines, and the processing being performed with a processing feed quantity according to a shape of the quarter wafer piece, the processing method comprising:\n an information collecting step of collecting information on shapes of four patterns of the quarter wafer pieces which are different in position of a circular arch of an outer periphery in the case where the quarter wafer pieces with the crystal orientation positioned in a predetermined direction are each held by a holding surface of a chuck table, and on processing feed quantities corresponding to the shapes of the four patterns; a wafer unit forming step of adhering a back surface of the quarter wafer piece to a dicing tape having an outer peripheral portion attached to an annular frame, to form a wafer unit; a holding step of suction holding the quarter wafer piece of the wafer unit by a chuck table of a processing apparatus through the dicing tape after the wafer unit forming step is conducted; an alignment step of imaging the quarter wafer piece by an imaging unit of the processing apparatus, and aligning the division line extending in a first direction to a processing feed direction, based on target patterns formed in the devices after the holding step is conducted; a pattern selection step of selecting that one of the four patterns to which the quarter wafer piece held by the chuck table corresponds after the alignment step is conducted; and a processing step of processing the quarter wafer piece held by the chuck table along the division line with the processing feed quantity corresponding to the selected pattern after the pattern selection step is conducted.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 93.0
- Lexical Diversity: 2.04348
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15417642', '15388062', '14056578', '14056640', '14056524']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8402712834725958
- 35 USC 102 Novelty (BERT): 0.4673943382603606
- Combined Prediction Score: 0.8029835889513723
- Mean Citation Score: 138.900928
- Max Citation Score: 143.2496
- Similarity Product: 105.14672157993314

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