SHJ Cell Contact Design Optimization Patent Snapshot
The evidence-based corpus for SHJ cell/contact design optimization is extremely limited, comprising a single patent family filed by BYD, concentrated entirely in China under the H01L semiconductor device class. With only one assignee and one jurisdiction on record, the assignee snapshot is effectively nascent, and meaningful concentration or trend analysis must await a broader corpus.
BYD holds the only recorded position in this corpus
Within this corpus, BYD Co Ltd is the sole ranked applicant, holding the top position with one patent family. The current evidence base is too small to characterize visible assignee structure in a meaningful way.
The top five filers’ share of the ranked applicants visible in this query stands at 100%, driven entirely by this single family. This reflects the minimal size of the retrieved corpus rather than genuine market consolidation.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | BYD Co Ltd | 1 |
BYD’s sole presence under the H01L semiconductor devices class suggests an early, exploratory filing in SHJ contact design, entered as a new entrant with no prior-period activity on record.
The corpus covers a ten-year window. Publication lag of 18–24 months means recent filings may not yet appear, and the single-family result likely understates actual activity in this space. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A single 2023 filing event defines the trend record
The annual filing trend and technology composition both reflect a corpus of one patent family. Observations here are descriptive of the retrieval result rather than indicative of broad sector dynamics.
Annual filing trend
One family was recorded in 2023; all other years from 2017 to 2026 show zero filings. Given publication lag of 18–24 months, any filings from 2024 onward may not yet be visible, and the zero values for those years should not be read as absence of activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
The entire corpus falls within H01L (Semiconductor devices), reflecting that SHJ heterojunction contact design is captured under this broad class. No secondary IPC branches are present in the retrieved evidence.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
一种透明导电氧化物薄膜及晶体硅异质结太阳电池
本实用新型公开了一种透明导电氧化物薄膜及晶体硅异质结太阳电池，所述透明导电氧化物薄膜包括交替层叠设置的第一材料层和第二材料层，其中，所述透明导电氧化物薄膜的顶层和底层均为第一材料层，所述透明导电氧化物薄膜包括至少三层所述第一材料层。根据本实用新型提供的透明导电氧化物薄膜及晶体硅异质结太阳电池，通过光学设计，采用合理的第一材料层和第二材料层交替层叠设置的方式，形成具有至少五层的透明导电氧化物薄膜，提高了透明导电氧化物薄膜的耐候性，降低了成本。 (excerpt from the patent abstract)
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
BYD Co Ltd
BYD holds the sole patent family in this corpus, classified under H01L 31 (semiconductor devices for light detection or conversion), filed in 2023. Its momentum is flagged as a new entrant with no prior-period filings in this topic. Whether this reflects a strategic push into SHJ contact design or an isolated filing cannot be determined from one data point.
families: 1No challenger identified
No second-ranked applicant exists in the retrieved corpus. A challenger tier assessment is evidence pending. Researchers investigating competitive positioning should expand the corpus query to surface additional assignees that may be active in SHJ contact optimization under adjacent IPC classes.
families: —Frequently asked questions
The retrieved corpus contains one patent family. This is an unusually small result and likely reflects a narrow query scope rather than the true size of global SHJ contact design IP activity. Broadening the search terms or IPC class filters in PatSnap Eureka is recommended before drawing investment conclusions.
BYD Co Ltd is the sole and therefore top-ranked applicant, holding one patent family filed in 2023. No other applicant appears in the retrieved ranking.
China is the only jurisdiction recorded in this corpus, accounting for the single retrieved family. Whether other jurisdictions such as the United States, Europe, or South Korea have relevant filings is not determinable from this evidence base.
The retrieved family is classified under H01L (Semiconductor devices), specifically H01L 31, which covers semiconductor devices sensitive to electromagnetic radiation — the standard class for photovoltaic devices including SHJ cells.
A lifecycle stage cannot be determined from this single-family corpus. A credible maturity assessment requires a multi-year trend across a larger filing population. Researchers should expand the corpus before characterizing the field’s lifecycle.
No collaboration pairs appear in the retrieved evidence. Whether industry consortia, university partnerships, or joint development agreements have generated co-filed IP in SHJ contact design is not visible in the current corpus. Expanding the search is necessary to assess ecosystem dynamics.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.