PATENT CLAIM ANALYSIS

Application Number: 15887560
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["438", "462000"]

Abstract:
A processing method of a wafer includes a cut groove forming step of carrying out cutting with a cutting blade along streets from the back surface of the wafer to form cut grooves, a wafer dividing step of irradiating the wafer with a laser beam along the cut grooves and dividing the wafer into individual chips after the cut groove forming step is carried out, and a die bonding layer disposing step of applying a liquid die bonding agent on the back surface of the wafer and curing it to form the chips on which die bonding layers are formed on the back surface. According to the processing method of the present invention, the occurrence of clogging in the cutting blade and generation of a burr or the like in the die bonding layers can be prevented.

Claim (Index 1):
A processing method of a wafer having a front surface on which a device is formed in each of regions marked out by a plurality of streets that intersect, the processing method comprising:\n a front surface protective member disposing step of disposing a front surface protective member on the front surface of the wafer; a holding step of holding a front surface side of the wafer on which the front surface protective member is disposed by a holding table; a cut groove forming step of carrying out cutting with a cutting blade along the streets from a back surface of the wafer held by the holding table to form cut grooves; a wafer dividing step of irradiating the wafer with a laser beam with such a wavelength as to be absorbed by the wafer along the cut grooves and dividing the wafer into individual chips after the cut groove forming step is carried out; and a die bonding layer disposing step of applying a liquid die bonding agent on the back surface of the wafer and curing the liquid die bonding agent applied on the back surface of the wafer to form the chips on which die bonding layers are disposed on the back surface before or after the wafer dividing step is carried out.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 88.0
- Lexical Diversity: 2.18462
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15456800', '10866781', '15286246', '11785167', '10793753']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8505161909866745
- 35 USC 102 Novelty (BERT): 0.4714290138942996
- Combined Prediction Score: 0.8126074732774371
- Mean Citation Score: 175.712554
- Max Citation Score: 187.68457
- Similarity Product: 149.04605337864157

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