G02F 1/139
Based on orientation effects in which the liquid crystal remains transparent
Official title: based on orientation effects in which the liquid crystal remains transparent
G02F1/139 (Based on orientation effects in which the liquid crystal remains transparent) appears on 3,619 US grants and 3,019 published applications in this corpus.
Search patents in G02F- Granted patents
- 3,619
- Published applications
- 3,019
- Assignees
- 699
- Inventors
- 4,724
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 12 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 11 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 10 | 0 |
| 1984 | 9 | 0 |
| 1985 | 10 | 0 |
| 1986 | 21 | 0 |
| 1987 | 30 | 0 |
| 1988 | 25 | 0 |
| 1989 | 37 | 0 |
| 1990 | 42 | 0 |
| 1991 | 47 | 0 |
| 1992 | 72 | 0 |
| 1993 | 68 | 0 |
| 1994 | 55 | 0 |
| 1995 | 52 | 0 |
| 1996 | 84 | 0 |
| 1997 | 75 | 0 |
| 1998 | 94 | 0 |
| 1999 | 79 | 0 |
| 2000 | 131 | 0 |
| 2001 | 87 | 63 |
| 2002 | 96 | 138 |
| 2003 | 130 | 130 |
| 2004 | 125 | 205 |
| 2005 | 121 | 238 |
| 2006 | 142 | 248 |
| 2007 | 126 | 224 |
| 2008 | 153 | 218 |
| 2009 | 174 | 186 |
| 2010 | 175 | 151 |
| 2011 | 207 | 155 |
| 2012 | 168 | 141 |
| 2013 | 115 | 103 |
| 2014 | 108 | 99 |
| 2015 | 98 | 73 |
| 2016 | 66 | 88 |
| 2017 | 65 | 53 |
| 2018 | 61 | 65 |
| 2019 | 58 | 74 |
| 2020 | 67 | 59 |
| 2021 | 62 | 67 |
| 2022 | 53 | 50 |
| 2023 | 46 | 65 |
| 2024 | 51 | 63 |
| 2025 | 54 | 40 |
| 2026 | 23 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G02F 1/1393The birefringence of the liquid crystal being electrically controlled1,885
- G02F 1/1396The liquid crystal being selectively controlled between a twisted state and a810
- G02F 1/141Using ferroelectric liquid crystals757
- G02F 1/1391Bistable or multi-stable liquid crystal cells157
- G02F 1/1392Using a field-induced sign-reversal of the dielectric anisotropy70
Recent patents
- Display device15 Sep 2026US 12,736,839 B2LG Display Co., Ltd.
- Lighting system21 Jul 2026US 12,687,277 B2Japan Display Inc.
- Complex light modulator, holographic display device, and see-through display device7 Jul 2026US 12,675,016 B2Korea University Research and Business Foundation, Sejong Campus
- Vehicle display apparatus integrated with a temperature regulator7 Jul 2026US 12,677,402 B2Continental Automotive Technologies GmbH
- Adjustable-magnification viewing system30 Jun 2026US 12,669,695 B2Thales
- Preparation method and application for ferroelectric liquid crystal material grating at room temperature based on femtosecond laser direct writing1 Oct 2026US 2026/0299322 A1Nanjing University
- Light control sheet, light control device, and method for producing light control sheet1 Oct 2026US 2026/0299364 A1Toppan Holdings Inc.
- A backlight unit, a vehicle display apparatus and a method of controlling the same1 Oct 2026US 2026/0301700 A1AUMOVIO Germany GmbH
- Method for reducing disclinations in a 2d/3d switchable autostereoscopic display27 Aug 2026US 2026/0254937 A1Dimenco Holding B.V.
- Active dual-band liquid crystal transmissive and reflective array structure20 Aug 2026US 2026/0246154 A1National Taiwan University of Science and Technology
Most cited
By later US patents
- Chiral smectic C or H liquid crystal electro-optical device483US 4,367,924 A1983
- Liquid-crystal electro-optical apparatus and method of manufacturing the same383US 5,594,569 ASemiconductor Energy Laboratory Co.Ltd. · 1997
- Liquid crystal displays having multi-domain cells279US 5,309,264 AInternational Business Machines Corporation · 1994
- Liquid crystal device having pillar spacers with small base periphery width in direction perpendicular to orientation treatment268US 4,775,225 ACanon Kabushiki Kaisha · 1988
- Vertically aligned (VA) liquid crystal display device268US 6,724,452 B1Fujitsu Display Technologies Corporation · 2004