PATENT CLAIM ANALYSIS

Application Number: 15754014
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-09
Patent Classification: ["136", "256000"]

Abstract:
A solar cell includes an n-type semiconductor substrate having a p-n junction and a back-surface side impurity-diffusion layer. The back-surface side impurity-diffusion layer is formed on a light-receiving surface of the semiconductor substrate or surface layer on a back-surface side opposite to the light-receiving surface, and has back-surface side high-concentration impurity-diffusion layers each of which contains an n-type or p-type impurity element at a first concentration and a back-surface side low-concentration impurity-diffusion layer which contains an impurity element of the same conductivity type as a conductivity type of the back-surface side high-concentration impurity-diffusion layers at a second concentration lower than the first concentration. The solar cell includes back-surface first electrodes formed at locations on a back-surface of the semiconductor substrate and electrically connected to the back-surface side high-concentration impurity-diffusion layers and back-surface second electrodes electrically connecting the back-surface first electrodes while being separated from the back-surface side impurity-diffusion layer.

Claim (Index 6):
A method of manufacturing a solar cell, the method comprising:\n a first step of forming an impurity diffusion layer having a first impurity diffusion layer in which an n-type or p-type impurity element is diffused at a first concentration, and a second impurity diffusion layer in which an impurity element of the same conductivity type as a conductivity type of the first impurity diffusion layer is diffused at a second concentration lower than the first concentration, on a light-receiving surface of an n-type semiconductor substrate having a p-n junction or a surface layer on a back surface side opposite to the light-receiving surface; a second step of forming a passivation film on the impurity diffusion layer; a third step of printing a first electrode paste on the passivation film in a region above the first impurity diffusion layer; a fourth step of printing a second electrode paste on the first electrode paste; and a fifth step of simultaneously firing the first electrode paste and the second electrode paste, and forming first electrodes embedded in the passivation film and electrically connected to the first impurity diffusion layer and a second electrode electrically connected to the first electrodes in a state where the second electrode is located away from the impurity diffusion layer.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 88.0
- Lexical Diversity: 2.59322
- Patent Class: 136.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13388517', '13001107', '15032171', '14233895', '14785575']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7944220199885045
- 35 USC 102 Novelty (BERT): 0.5269416426647722
- Combined Prediction Score: 0.7676739822561313
- Mean Citation Score: 335.3878200000001
- Max Citation Score: 340.8884
- Similarity Product: 288.2252033056259

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