PATENT CLAIM ANALYSIS

Application Number: 15910395
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["257", "043000"]

Abstract:
An object is to improve field effect mobility of a thin film transistor using an oxide semiconductor. Another object is to suppress increase in off current even in a thin film transistor with improved field effect mobility. In a thin film transistor using an oxide semiconductor layer, by forming a semiconductor layer having higher electrical conductivity and a smaller thickness than the oxide semiconductor layer between the oxide semiconductor layer and a gate insulating layer, field effect mobility of the thin film transistor can be improved, and increase in off current can be suppressed.

Claim (Index 9):
A semiconductor device comprising:\n a gate electrode; a gate insulating film over the gate electrode; a first non-single crystalline oxide semiconductor layer comprising indium and, zinc over the gate electrode with the gate insulating film interposed therebetween; a second non-single crystalline oxide semiconductor layer comprising indium and zinc over the first non-single crystalline oxide semiconductor layer, the second non-single crystalline oxide semiconductor layer having an electrical conductivity lower than the first non-single crystalline oxide semiconductor layer; a source electrode over and in electrical contact with the second non-single crystalline oxide semiconductor layer through a first n-type conductivity region; a drain electrode over and in electrical contact with the second non-single crystalline oxide semiconductor layer through a second n-type conductivity region; and a first insulating film comprising silicon and oxygen over the second non-single crystalline oxide semiconductor layer, the source electrode and the drain electrode, wherein part of the second non-single crystalline oxide semiconductor layer between the source electrode and the drain electrode is etched so that a portion of the second non-single crystalline oxide semiconductor layer between the source electrode and the drain electrode is thinner than portions of the second non-single crystalline oxide semiconductor layer below the source electrode and the drain electrode, wherein the first insulating film is in contact with an upper surface of the second non-single crystalline oxide semiconductor layer between the source electrode and the drain electrode, wherein each of the first n-type conductivity region and the second n-type conductivity region comprises an oxide semiconductor material comprising indium, and wherein the first non-single crystalline oxide semiconductor layer includes crystals.

Metadata:
- Claim Count in Document: 54.0
- Percentile: 90.0
- Lexical Diversity: 2.12766
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13688596', '15146980', '13688598', '14278521', '15478617']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9404859517753404
- 35 USC 102 Novelty (BERT): 0.5415910640433129
- Combined Prediction Score: 0.9005964630021377
- Mean Citation Score: 386.61827
- Max Citation Score: 393.7326
- Similarity Product: 379.595066361165

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test