Patent Theme
LED Epitaxial Layer Engineering
Development and optimization of the semiconductor material layers and their interfaces within an LED to control light emission properties, manage internal stress, and improve device efficiency.
4,767 US filings from 764 companies since 2023 · 2023: 1,888 · 2024: 1,810 · 2025: 893 · 2026 YTD: 176
LED & Optoelectronics (Legacy CPC)
Top companies
Ranked by filings in this theme since 2023. 2026 is partial.
| # | Company | Since 2023 | 2023 | 2024 | 2025 | 2026 YTD | YoY |
|---|
| 1 | Samsung Display Co., Ltd. | 322 | 189 | 71 | 49 | 13 | -31.0% |
| 2 | NICHIA CORPORATION | 264 | 120 | 105 | 38 | 1 | -63.8% |
| 3 | Seoul Viosys Co., Ltd. | 207 | 76 | 88 | 36 | 7 | -59.1% |
| 4 | EPISTAR CORPORATION | 175 | 67 | 74 | 33 | 1 | -55.4% |
| 5 | Lumileds LLC | 164 | 90 | 53 | 19 | 2 | -64.2% |
| 6 | SAMSUNG ELECTRONICS CO., LTD. | 131 | 50 | 51 | 23 | 7 | -54.9% |
| 7 | CREELED, INC. | 109 | 41 | 45 | 20 | 3 | -55.6% |
| 8 | Semiconductor Energy Laboratory Co., Ltd. | 79 | 55 | 21 | 3 | · | -85.7% |
| 9 | BOE Technology Group Co., Ltd. | 77 | 17 | 41 | 16 | 3 | -61.0% |
| 10 | XIAMEN SAN'AN OPTOELECTRONICS CO., LTD. | 73 | 32 | 30 | 9 | 2 | -70.0% |
| 11 | InnoLux Corporation | 69 | 28 | 20 | 18 | 3 | -10.0% |
| 12 | JADE BIRD DISPLAY (SHANGHAI) LIMITED | 68 | 9 | 28 | 30 | 1 | +7.1% |
| 13 | ams-OSRAM International GmbH | 62 | 11 | 40 | 11 | · | -72.5% |
| 14 | ENKRIS SEMICONDUCTOR, INC. | 61 | 22 | 26 | 12 | 1 | -53.8% |
| 15 | LG DISPLAY CO., LTD. | 60 | 33 | 14 | 12 | 1 | -14.3% |
| 16 | OSRAM Opto Semiconductors GmbH | 60 | 18 | 23 | 19 | · | -17.4% |
| 17 | QUANZHOU SANAN SEMICONDUCTOR TECHNOLOGY CO., LTD. | 54 | 13 | 28 | 12 | 1 | -57.1% |
| 18 | Micron Technology, Inc. | 52 | 16 | 22 | 12 | 2 | -45.5% |
| 19 | SHARP KABUSHIKI KAISHA | 52 | 30 | 16 | 4 | 2 | -75.0% |
| 20 | Applied Materials, Inc. | 48 | 12 | 18 | 9 | 9 | -50.0% |
| 21 | LG ELECTRONICS INC. | 45 | 13 | 16 | 12 | 4 | -25.0% |
| 22 | Silanna UV Technologies Pte Ltd | 45 | 18 | 16 | 11 | · | -31.2% |
| 23 | TIANJIN SANAN OPTOELECTRONICS CO., LTD. | 44 | 8 | 29 | 7 | · | -75.9% |
| 24 | Nikkiso Co., Ltd. | 43 | 25 | 13 | 5 | · | -61.5% |
| 25 | Meta Platforms Technologies, LLC | 41 | 25 | 10 | 6 | · | -40.0% |