PATENT CLAIM ANALYSIS

Application Number: 15873226
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["257", "666000"]

Abstract:
A lead frame has a concavity formed on the upper-surface side of a metal plate and columnar portions  3  defined by the concavity. A horizontally deepest portion regarding a side face shape of the concavity is positioned lower than the vertical center position of the concavity. Thereby, overhangs projecting from the top faces of the columnar portions rarely cause shape defects or burr defects and thus the lead frame has an enhanced capability, by the columnar portions, of preventing a sealing resin from coming off without sacrificing the freedom of wiring design.

Claim (Index 4):
A method for manufacturing a lead frame, comprising:\n forming a plating layer with a predetermined shape on each of a front surface and aback surface of a copperplate having a thickness of 100 to 200 \u03bcm, forming a resist mask covering the plating layer formed on a front-surface side of the copper plate and forming a resist mask covering an entire surface of the copper plate on a back-surface side, and performing half-etching treatment from the front-surface side of the copper plate using an etching solution containing, as an etching inhibitor, an organic compound containing nitrogen having affinity to copper, to forma concavity defining columnar portions that are to serve as internal connecting terminals, respectively, or internal connecting terminals and pads, respectively, such that a horizontally deepest portion regarding a side face shape of the concavity is positioned lower than a vertical center position of the concavity, by dissolving and removing the copper plate for 50 to 100 \u03bcm in a depth direction thereof so as not to penetrate the entire copper plate.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 86.0
- Lexical Diversity: 1.63333
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15836044', '15690532', '15504404', '15156730', '13129649']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9100435906921416
- 35 USC 102 Novelty (BERT): 0.5088831426771057
- Combined Prediction Score: 0.8699275458906379
- Mean Citation Score: 199.404476
- Max Citation Score: 286.5082700000001
- Similarity Product: 210.74491108043617

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