G02F 1/137
Characterised by the electro-optical or magneto-optical effect
Official title: characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
G02F1/137 (Characterised by the electro-optical or magneto-optical effect) appears on 6,274 US grants and 5,992 published applications in this corpus.
Search patents in G02F- Granted patents
- 6,274
- Published applications
- 5,992
- Assignees
- 1,164
- Inventors
- 8,469
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 34 | 0 |
| 1977 | 21 | 0 |
| 1978 | 19 | 0 |
| 1979 | 7 | 0 |
| 1980 | 23 | 0 |
| 1981 | 18 | 0 |
| 1982 | 8 | 0 |
| 1983 | 23 | 0 |
| 1984 | 14 | 0 |
| 1985 | 24 | 0 |
| 1986 | 31 | 0 |
| 1987 | 45 | 0 |
| 1988 | 33 | 0 |
| 1989 | 52 | 0 |
| 1990 | 46 | 0 |
| 1991 | 56 | 0 |
| 1992 | 81 | 0 |
| 1993 | 80 | 0 |
| 1994 | 61 | 0 |
| 1995 | 67 | 0 |
| 1996 | 102 | 0 |
| 1997 | 91 | 0 |
| 1998 | 120 | 0 |
| 1999 | 98 | 0 |
| 2000 | 154 | 0 |
| 2001 | 118 | 85 |
| 2002 | 125 | 192 |
| 2003 | 169 | 176 |
| 2004 | 171 | 242 |
| 2005 | 153 | 304 |
| 2006 | 173 | 309 |
| 2007 | 155 | 291 |
| 2008 | 183 | 285 |
| 2009 | 213 | 272 |
| 2010 | 245 | 253 |
| 2011 | 264 | 240 |
| 2012 | 255 | 259 |
| 2013 | 184 | 204 |
| 2014 | 169 | 204 |
| 2015 | 192 | 209 |
| 2016 | 176 | 227 |
| 2017 | 178 | 282 |
| 2018 | 213 | 277 |
| 2019 | 234 | 274 |
| 2020 | 264 | 230 |
| 2021 | 236 | 263 |
| 2022 | 231 | 210 |
| 2023 | 203 | 241 |
| 2024 | 215 | 212 |
| 2025 | 164 | 158 |
| 2026 | 83 | 93 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G02F 1/139Based on orientation effects in which the liquid crystal remains transparent3,619
- G02F 1/13718Based on a change of the texture state of a cholesteric liquid719
- G02F 1/13725Based on guest-host interaction540
- G02F 1/13712The liquid crystal having negative dielectric anisotropy450
- G02F 1/13775Polymer-stabilized liquid crystal layers371
- G02F 1/13706The liquid crystal having positive dielectric anisotropy217
- G02F 1/13756The liquid crystal selectively assuming a light-scattering state210
- G02F 1/13793Blue phases168
All 14 subgroupsShow fewer
- G02F 1/13731Based on a field-induced phase transition140
- G02F 1/13781Using smectic liquid crystals55
- G02F 1/13743Based on electrohydrodynamic instabilities or domain formation in liquid crystals45
- G02F 1/13762Containing luminescent or electroluminescent additives41
- G02F 1/13787Hybrid-alignment cells32
- G02F 1/13768Based on magneto-optical effects19
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Most cited
By later US patents
- Interferometric modulation of radiation1,041US 6,674,562 B1Iridigm Display Corporation · 2004
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- Interferometric modulation of radiation436US 6,867,896 B2Idc, LLC · 2005