PATENT CLAIM ANALYSIS

Application Number: 15945341
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["438", "458000"]

Abstract:
Methods, assemblies, and equipment are described for bonding one or more die that may be of dissimilar thickness to a wafer. The die may be fabricated and singulated with a planarized oxide layer protecting from wafer dicing and handling debris one or more metallized post structures connecting to an integrated circuit. Face sides of the die are bonded to a first handle wafer, such that the respective post structures are aligned in a common plane. The substrate material back sides of the bonded die are then thinned to a uniform thickness and bonded to a second handle wafer. The assembly may then be flipped, and the first handle wafer and protective layer including potential dicing and handling debris removed. The post structures are revealed, resulting in a composite wafer assembly including the second handle and one or more uniformly thinned die mounted thereto.

Claim (Index 1):
A method of bonding one or more die to a wafer, comprising:\n receiving a plurality of die, each die having a face side, a substrate material back side, and a thickness, each face side including a planarized oxide layer protecting one or more metallized post structures connecting to a device structure formed in the die; bonding each face side of the plurality of die to a front side of a first handle wafer, such that the metallized post structures associated with each of the die lie in a common plane; thinning each of the substrate material back sides of the bonded plurality of die to a uniform thickness; deposit bonding a SiO2 layer on the respective backsides of the plurality of die and an exposed front side of the first handle wafer; bonding the back sides of the uniformly thinned plurality of die to a front side of a second handle wafer; removing the first handle wafer by thinning; and removing the planarized oxide layers from each face side of the plurality of uniformly thinned die to reveal the one or more metallized post structures.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 91.0
- Lexical Diversity: 2.10959
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12694012', '12575522', '15653329', '12270585', '11163226']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.828906704068543
- 35 USC 102 Novelty (BERT): 0.4985839836422055
- Combined Prediction Score: 0.7958744320259094
- Mean Citation Score: 230.25842000000003
- Max Citation Score: 235.58023
- Similarity Product: 177.4046398910582

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