PATENT CLAIM ANALYSIS

Application Number: 16405619
Application Type: Utility
Filing Date: 2019-05
Publication Date: 2019-08
Patent Classification: ["257", "194000"]

Abstract:
The disclosure relates to power semiconductor devices in GaN technology. The disclosure proposes an integrated auxiliary (double) gate terminal and a pulldown network to achieve a normally-off (E-Mode) GaN transistor with threshold voltage higher than 2V, low gate leakage current and enhanced switching performance. The high threshold voltage GaN transistor has a high-voltage active GaN device and a low-voltage auxiliary GaN device wherein the high-voltage GaN device has the gate connected to the source of the integrated auxiliary low-voltage GaN transistor and the drain being the external high-voltage drain terminal and the source being the external source terminal, while the low-voltage auxiliary GaN transistor has the gate (first auxiliary electrode) connected to the drain (second auxiliary electrode) functioning as an external gate terminal. In other embodiments a pull-down network for the switching-off of the high threshold voltage GaN transistor is formed by additional auxiliary low-voltage GaN transistors and resistive elements connected in parallel or in series with the low-voltage auxiliary GaN transistor.

Claim (Index 1):
A III-nitride power semiconductor based heterojunction device, comprising:\n an active heterojunction transistor formed on a substrate, the active heterojunction transistor comprising:\n a first III-nitride semiconductor region comprising a first heterojunction comprising an active two dimensional carrier gas of second conductivity type; \n a first terminal operatively connected to the III-nitride semiconductor region; \n a second terminal laterally spaced from the first terminal and operatively connected to the III-nitride semiconductor region; \n an active gate region formed over the III-nitride semiconductor region, the active gate region being formed between the first terminal and the second terminal; \n an auxiliary heterojunction transistor formed on the said substrate or a further substrate, the auxiliary heterojunction transistor comprising:\n a second III-nitride semiconductor region comprising a second heterojunction comprising an auxiliary two dimensional carrier gas of second conductivity type; \n a first additional terminal operatively connected to the second III-nitride semiconductor region; \n a second additional terminal laterally spaced from the first additional terminal and operatively connected to the second III-nitride semiconductor region; \n an auxiliary gate region formed over the second III-nitride semiconductor region, the auxiliary gate region being formed between the first additional terminal and the second additional terminal; \n wherein the first additional terminal is operatively connected with the auxiliary gate region, and wherein the second additional terminal is operatively connected with the active gate region; and wherein the auxiliary heterojunction transistor is a first auxiliary heterojunction transistor, and wherein the heterojunction power device further comprises a second auxiliary heterojunction transistor which is operatively connected in parallel with the first auxiliary transistor, and wherein the first additional terminal of the first auxiliary heterojunction transistor is operatively connected to a source terminal of the second auxiliary heterojunction transistor, and the second additional terminal of the first auxiliary heterojunction transistor is operatively connected to a drain terminal of the second auxiliary heterojunction transistor.

Metadata:
- Claim Count in Document: 48.0
- Percentile: 100.0
- Lexical Diversity: 2.28571
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16054502', '13936386', '16032502', '14083777', '14959710']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9250064642944632
- 35 USC 102 Novelty (BERT): 0.5005520637946377
- Combined Prediction Score: 0.8825610242444806
- Mean Citation Score: 269.555118
- Max Citation Score: 274.8219
- Similarity Product: 219.11674061089755

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