PATENT CLAIM ANALYSIS

Application Number: 15898671
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-08
Patent Classification: ["257", "343000"]

Abstract:
A high voltage transistor with low on resistance is disclosed. The transistor may include at least one cut out region in the drift region under the drain of the transistor. The cut out region is devoid of the drift well which connects the drain to the channel. Cut out regions may be distributed along the width direction of the drain region of the transistor. The transistor may alternatively or further include a vertical polysilicon plate surrounding the device region. The vertical polysilicon plate may be implemented as a deep trench isolation region. The deep trench isolation region includes a deep trench lined with an insulation collar and filled with polysilicon. The vertical polysilicon plate reduces an on resistance to improve device performance.

Claim (Index 17):
A method for forming a device comprising:\n providing a substrate with a device region; forming a body well in the device region; forming a drift well in the device region, the drift well includes a non-cut out region which includes the drift well, and a cut out region which is devoid of the drift well; forming a gate on the substrate, the gate includes first and second gate sidewalls; and forming first and second source/drain (S/D) regions, the second S/D region is disposed adjacent to the second gate sidewall and within the body well, and the first S/D region is disposed adjacent to the first gate sidewall, the non-cut out region of the drift well completely encompasses a first portion of the first S/D region, the drift well couples the first portion of the first S/D region to the body well, and the cut out region of the drift well is structured to reduce an on resistance of the transistor.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 88.0
- Lexical Diversity: 2.06349
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14808991', '15872939', '15137018', '15640613', '15898669']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9193784976651038
- 35 USC 102 Novelty (BERT): 0.490507931019544
- Combined Prediction Score: 0.8764914410005479
- Mean Citation Score: 236.994976
- Max Citation Score: 244.54065
- Similarity Product: 192.1398067662835

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