PATENT CLAIM ANALYSIS

Application Number: 16002963
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-12
Patent Classification: ["257", "676000"]

Abstract:
Described herein is a technology or a method for pre-fabricating pre-cut plating lines on a lead frame with use of a pre-cut etchback process to minimize burrs during a semiconductor package singulation process. A package includes: a chip, and a lead frame that mounts the chip. The lead frame further includes pre-fabricated pre-cut plating lines that are etched back on the lead frame to form an opening slot on a periphery of the lead frame. The opening slot allows a saw blade to cut through a prepreg material, without touching or cutting a conductive material of the lead frame.

Claim (Index 1):
A method comprising:\n an etchback process on a lead frame that comprises:\n forming a stack of prepreg material, a conductive layer, and a solder mask; \n patterning a masking layer on the stack; \n forming a mask opening on masking layer; \n etching back the solder mask and the conductive layer within the formed mask opening to expose a top surface of the prepreg material; and \n dissolving the masking layer, thereby creating pre-cut plating lines; \n mounting a chip on the lead frame; making electrical connections from the chip to leads on the lead frame; and cutting through the etched back pre-fabricated pre-cut plating lines.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 94.0
- Lexical Diversity: 1.79661
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13009362', '11877732', '15156730', '12752717', '14273762']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.911435589404939
- 35 USC 102 Novelty (BERT): 0.4763931776953874
- Combined Prediction Score: 0.8679313482339839
- Mean Citation Score: 165.177464
- Max Citation Score: 178.23685
- Similarity Product: 130.94697405125498

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