Light-emitting devices and methods for manufacturing the same
US-2021359176-A1 · Nov 18, 2021 · US
Electricity
Electricity · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01L31/14 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 81 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 6 |
| 2017 | 10 |
| 2018 | 8 |
| 2019 | 10 |
| 2020 | 10 |
| 2021 | 13 |
| 2022 | 5 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Light-emitting devices and methods for manufacturing the same
US-2021336103-A1 · Oct 28, 2021 · US
Electroluminescent display panel and display device
US-2021288215-A1 · Sep 16, 2021 · US
Display Device and Electronic Device
US-2021278713-A1 · Sep 9, 2021 · US
Display panel and display device
US-2021249563-A1 · Aug 12, 2021 · US
Light-emitting devices and methods for manufacturing the same
US-11088306-B2 · Aug 10, 2021 · US
Connector for photonic device
US-11005000-B2 · May 11, 2021 · US
Display device and electronic device
US-11003009-B2 · May 11, 2021 · US
Display panel and display device
US-10991848-B2 · Apr 27, 2021 · US
Display substrate and manufacturing method thereof, display panel, and display device
US-10964838-B2 · Mar 30, 2021 · US
Chip package and method for forming the same
US-10950738-B2 · Mar 16, 2021 · US
Display device
US-2020335524-A1 · Oct 22, 2020 · US
Display device and active array switch substrate thereof
US-10727258-B2 · Jul 28, 2020 · US
Photoelectric conversion apparatus, sensor unit, and image forming apparatus
US-10714527-B2 · Jul 14, 2020 · US
Systems and methods for tactile sensing
US-10663361-B2 · May 26, 2020 · US
Bio-information detecting sensor
US-10644186-B2 · May 5, 2020 · US
Display panel and display device
US-2020135972-A1 · Apr 30, 2020 · US
Electroluminescent display panel and display device
US-2020135973-A1 · Apr 30, 2020 · US
Photovoltaic device and method of manufacturing the same
US-10637392-B2 · Apr 28, 2020 · US
Distributed optoelectronic receiver
US-10606004-B2 · Mar 31, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01L31/14?
- CPC H01L31/14 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H01L31/14 (Electricity)?
- Our database includes 81 publications tagged with this CPC code.
- Is patent activity under CPC H01L31/14 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).