PATENT CLAIM ANALYSIS

Application Number: 15758217
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["174", "251000"]

Abstract:
The present disclosure relates to a structure and a method for filling a via hole formed in a multilayer printed circuit board, and more particularly, to a structure and a method for filling a via hole formed in a multilayer printed circuit board, the structure and method enabling high-current transmission even in a narrow space in such a way that a via hole formed when a typical multilayer printed circuit board is manufactured is first filled with Cu and Ag plating, and the remaining vacant space is completely filled with a solder cream, thereby increasing the amount of conductors.

Claim (Index 1):
A method for manufacturing a multilayer printed circuit board (MLB), comprising:\n a copper foil forming step for plating a copper foil on an entire surface of a laminated plate to form a plurality of copper foil laminated plates; an inner layer circuit printing step for coating the copper foil laminated plates formed in the copper foil laminated plate forming step with a photosensitive dry film and then with a master film on which a circuit is printed to form a circuit through light irradiation and development; an etching step for removing unnecessary copper foils from surfaces of the copper foil laminated plates on which the printing of inner layer circuit is completed, to form a circuit; a rest delaminating step for removing the dry film of a circuit portion to complete circuit formation; a laminating process step for laminating and attaching each copper foil plate in which the circuit formation is completed; a via hole processing step for forming via holes at positions connecting circuits located on layers different from each other in the laminated plates laminated in the laminating process step; a via hole plating step for plating the inside of the holes to be electrically connectable after processing the via holes in the via hole processing step; a solder mask printing process step for applying a solder mask insulating ink to prevent the generation of a bridge of the soldering solder and the oxidation of exposed circuits when surface mounting for mounting components on an uppermost laminated substrate is performed; a solder cream filling step for filling a vacant space of the via holes filled with plating when surface mounting for mounting components on a laminated substrate is performed; and a step for completely filling the holes filled with the solder cream in the solder cream filling step by performing a reflow of the solder cream.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 90.0
- Lexical Diversity: 1.98113
- Patent Class: 174.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12278606', '11420421', '12098582', '11350032', '15146418']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8440388146255957
- 35 USC 102 Novelty (BERT): 0.490608193398562
- Combined Prediction Score: 0.8086957525028924
- Mean Citation Score: 213.76488200000003
- Max Citation Score: 218.55154
- Similarity Product: 149.9278131362367

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test