PATENT CLAIM ANALYSIS

Application Number: 15988453
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-03
Patent Classification: ["257", "076000"]

Abstract:
Circuit-Under-Pad (CUP) device topologies for high current lateral GaN power transistors comprise first and second levels of on-chip metallization M1 and M2; M1 defines source, drain and gate finger electrodes of a plurality of sections of a multi-section transistor and a gate bus; M2 defines an overlying contact structure comprising a drain pad and source pads extending over active regions of each section. The drain and source pads of M2 are interconnected by conductive micro-vias to respective underlying drain and source finger electrodes of M1. The pad structure and the micro-via interconnections are configured to reduce current density in self-supported widths of source and drain finger electrodes, i.e. to optimize a maximum current density for each section. For reduced gate loop inductance, part of each source pad is routed over the gate bus. Proposed CUP device structures provide for higher current carrying capability and reduced drain-source resistance.

Claim (Index 10):
A semiconductor device structure comprising:\n a lateral GaN transistor structure comprising active regions for a plurality of transistor sections of a multi-section transistor; each transistor section comprising source, drain and gate electrodes defined on the respective active region; a level of on-chip metallization defining for each section a contact structure comprising a drain pad and a source pad; the drain pad and source pad extending over the active region; the drain pad being interconnected by conductive micro-vias to underlying drain electrodes and the source pad being is interconnected by conductive micro-vias to underlying source electrodes; wherein the drain electrodes have a first cross-section and the source electrodes have a second cross-section greater than the first cross-section, and wherein the drain pad is larger than the source pad, areas of the drain pad and the source pad being sized in proportion to said first and second cross-sections.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 93.0
- Lexical Diversity: 1.83908
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15704458', '15078023', '15027012', '14568507', '15032824']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.913689006655658
- 35 USC 102 Novelty (BERT): 0.5356042517485551
- Combined Prediction Score: 0.8758805311649477
- Mean Citation Score: 304.91698800000006
- Max Citation Score: 361.3031
- Similarity Product: 292.2612428030193

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