PATENT CLAIM ANALYSIS

Application Number: 16004748
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-02
Patent Classification: ["257", "565000"]

Abstract:
A semiconductor substrate includes a first-conductivity drift layer, a first-conductivity first impurity layer, a second-conductivity base layer, and a first-conductivity first emitter region. The first impurity layer is provided on the drift layer, and has impurity concentration higher than impurity concentration of the drift layer. The base layer is provided on the first impurity layer. The first emitter region is provided on the base layer. The first impurity layer connects between trenches. The plurality of trenches are formed in the semiconductor substrate covered by a gate insulation film. The gate insulation film has a first thickness between a gate electrode and the drift layer in a side wall surface, and has a second thickness between the gate electrode and the drift layer in a bottom surface. The second thickness is larger than the first thickness.

Claim (Index 6):
The semiconductor device according to  claim 5 , wherein the following relationships are satisfied: \ue89e r < d - t i \ue89e \ue89e 1 X jn \ue89e \n \ue89e , and [ Expression \ue89e \ue89e 4 ] \ue89e r min < r < r max \ue89e \n \ue89e r min = ( d - X jn ) - ( d - X jn ) 2 - 2 \ue89e ( \u025b ef \ue89e / \ue89e \u025b i \ue89e \ue89e 1 ) \ue89e w \u00b7 t i \ue89e \ue89e 1 2 \u00b7 X jn + 1 \ue89e \n \ue89e r max = ( d - X jn ) + ( d - X jn ) 2 - 2 \ue89e ( \u025b ef \ue89e / \ue89e \u025b i \ue89e \ue89e 1 ) \ue89e w \u00b7 t i \ue89e \ue89e 1 2 \u00b7 X jn + 1 [ Expression \ue89e \ue89e 5 ] where X jn  represents the depth of the interface of the drift layer and the first impurity layer, r represents a ratio of the depth of the interface of the gate insulation film and the gate electrode to the depth of the interface of the drift layer and the first impurity layer, w represents a width of the plurality of trenches, d represents a depth of the bottom surface of the plurality of trenches, t i1  and t i2  represent a thickness of the first insulation film and a thickness of the second insulation film, respectively, \u03b5 i1  and \u03b5 i2  represent permittivity of the first insulation film and permittivity of the second insulation film, respectively, and \u03b5 ef  is represented as follows: \u025b ef = \u025b i \ue89e \ue89e 1 t i \ue89e \ue89e 1 \u00b7 \u025b i \ue89e \ue89e 2 t i \ue89e \ue89e 2 \u025b i \ue89e \ue89e 1 t i \ue89e \ue89e 1 + \u025b i \ue89e \ue89e 2 t i \ue89e \ue89e 2 \ue89e ( t i \ue89e \ue89e 1 + t i \ue89e \ue89e 2 ) . [ Expression \ue89e \ue89e 3 ]

Metadata:
- Claim Count in Document: 3.0
- Percentile: 94.0
- Lexical Diversity: 3.14894
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12171041', '15105664', '15544898', '15740573', '13225648']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9221860233562992
- 35 USC 102 Novelty (BERT): 0.533118649107416
- Combined Prediction Score: 0.8832792859314108
- Mean Citation Score: 297.510846
- Max Citation Score: 314.38803
- Similarity Product: 172.03229434713364

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