PATENT CLAIM ANALYSIS

Application Number: 15882354
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["257", "122000"]

Abstract:
An insulated gate bipolar transistor (IGBT) includes a substrate, including a device region and a collection region, arranged into a bilayer structure. The device region includes a plurality of control regions and a plurality of turn-off regions. The IGBT also includes a drift region formed in the control regions and the turn-off regions, and electrically connected to the collection region; a well region formed in the control regions and the turn-off regions, and in contact with the drift region; a plurality of first gate structures formed in the control regions, and in contact with the drift region and the well region; and a plurality of emission regions formed in the well region of the control regions, and on at least one side of each first gate structure. The emission regions are isolated from the drift region, and are electrically connected to the well region of the turn-off regions.

Claim (Index 15):
A method for fabricating an IGBT, comprising:\n providing a substrate including a device region, wherein the device region includes a plurality of control regions and a plurality of turn-off regions, arranged alternately along a direction parallel to a surface of the substrate, and the plurality of control regions and the plurality of turn-off regions include a drift region; forming a well region in a portion of the substrate in the control regions and the turn-off regions, and a plurality of first gate structures in the control regions, wherein the well region is in contact with the drift region, and the plurality of first gate structures are in contact with both the drift region and the well region; forming a plurality of emission regions in the well region of the control regions, wherein the emission regions are formed in the substrate on one side or both sides of each first gate structure, the drift region and each emission region are separated by the well region, and the emission regions are electrically connected to a portion of the well region in the turn-off region; and forming a collection region in the substrate, wherein the collection region and the device region are arranged into a bilayer structure along a direction perpendicular to the surface of the substrate, and the collection region is in contact with the drift region.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 86.0
- Lexical Diversity: 3.15385
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['11863231', '13662384', '15874125', '15876184', '12760754']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9126902303757762
- 35 USC 102 Novelty (BERT): 0.4824258017684518
- Combined Prediction Score: 0.8696637875150439
- Mean Citation Score: 187.690334
- Max Citation Score: 192.00018
- Similarity Product: 138.42250831101893

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