G02F 1/13475
In which at least one liquid crystal cell or layer is doped
Official title: {in which at least one liquid crystal cell or layer is doped with a pleochroic dye, e.g. GH-LC cell (G02F1/13476 takes precedence)}
G02F1/13475 (In which at least one liquid crystal cell or layer is doped) appears on 188 US grants and 180 published applications in this corpus.
Search patents in G02F- Granted patents
- 188
- Published applications
- 180
- Assignees
- 99
- Inventors
- 429
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 4 |
| 2003 | 1 | 7 |
| 2004 | 4 | 4 |
| 2005 | 0 | 5 |
| 2006 | 5 | 1 |
| 2007 | 1 | 4 |
| 2008 | 4 | 5 |
| 2009 | 4 | 3 |
| 2010 | 1 | 3 |
| 2011 | 3 | 3 |
| 2012 | 2 | 8 |
| 2013 | 1 | 2 |
| 2014 | 5 | 2 |
| 2015 | 1 | 8 |
| 2016 | 8 | 11 |
| 2017 | 3 | 10 |
| 2018 | 12 | 10 |
| 2019 | 10 | 10 |
| 2020 | 11 | 20 |
| 2021 | 11 | 11 |
| 2022 | 19 | 6 |
| 2023 | 9 | 10 |
| 2024 | 11 | 16 |
| 2025 | 9 | 15 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Display device6 Jan 2026US 12,517,392 B2Nissan Motor Co., Ltd.
- Liquid-crystal optical system23 Dec 2025US 12,504,652 B2Centre National De La Recherche Scientifique
- Polarizer and array, polarization-controllable method and apparatus, and electronic device controlling a state of connectivity11 Nov 2025US 12,468,189 B2Huawei Technologies Co., Ltd.
- Multi-color variable transmission optical device11 Nov 2025US 12,468,198 B2Alphamicron Incorporated
- Light adjusting structure, light adjusting module and light adjusting device21 Oct 2025US 12,449,702 B2Beijing BOE Sensor Technology Co., Ltd.
- Multi-color variable transmission optical device12 Feb 2026US 2026/0044043 A1Alphamicron Incorporated
- Liquid crystal dimming device20 Nov 2025US 2025/0354062 A1Jiangsu Hecheng Display Technology Co., Ltd.
- Switchable light filter, lighting device and screen20 Nov 2025US 2025/0355292 A1siOPTICA GmbH
- Optical stack for switchable directional display9 Oct 2025US 2025/0314935 A1RealD Spark, LLC
- Color-preserving variable transmission optical device4 Sep 2025US 2025/0278001 A1Alphamicron Incorporated
Most cited
By later US patents
- Apparatus and method for an electronically controlled color filter for use in information display applications363US 5,032,007 AHoneywell Inc. · 1991
- Composition and process for the sealing of microcups in roll-to-roll display manufacturing226US 7,144,942 B2SiPix Imaging, Inc. · 2006
- Device capable of switching between an image display status and a mirror status, and an instrument disposed therewith191US 7,495,719 B2Hitachi Displays, Ltd. · 2009
- System and method for varying the reflectance or transmittance of light162US 7,411,637 B2ELOP Electro-Optics Industries Ltd. · 2008
- Apparatus and method for additive/subtractive pixel arrangement in color mosaic displays127US 4,886,343 AHoneywell Inc. · 1989