Cholesteric liquid crystal writing board
US-10509250-B2 · Dec 17, 2019 · US
Normally black display, i.e. the off state being black
Normally black display, i.e. the off state being black · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02F2203/64 |
| Official title | Normally black display, i.e. the off state being black |
| Display label | Normally black display, i.e. the off state being black |
| Total patents | 129 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 2 |
| 2017 | 17 |
| 2018 | 12 |
| 2019 | 28 |
| 2020 | 16 |
| 2021 | 11 |
| 2022 | 10 |
| 2023 | 8 |
| 2024 | 8 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Liquid crystal display device
US-10473996-B2 · Nov 12, 2019 · US
Semiconductor device and manufacturing method of the same
US-10468531-B2 · Nov 5, 2019 · US
Cholesteric liquid crystal writing board
US-2019324308-A1 · Oct 24, 2019 · US
Light shielding apparatus, method of fabricating the same, and transparent display device including the same
US-10423022-B2 · Sep 24, 2019 · US
Display panel, operating method thereof and display device
US-10409106-B2 · Sep 10, 2019 · US
Liquid crystal apparatus, electronic apparatus, and method for driving liquid crystal apparatus
US-2019265534-A1 · Aug 29, 2019 · US
Liquid crystal grating and driving method thereof, display device
US-2019265557-A1 · Aug 29, 2019 · US
Light blocking device, method of manufacturing the same, and transparent display device including the same
US-10394070-B2 · Aug 27, 2019 · US
Display panel, active matrix substrate , and method for repairing white defect of display panel
US-2019250476-A1 · Aug 15, 2019 · US
Liquid crystal device and electronic apparatus
US-2019219848-A1 · Jul 18, 2019 · US
Display apparatus with reduced flash noise, and a method of driving the display apparatus
US-10304406-B2 · May 28, 2019 · US
Electronic display with multiple polarizer layers
US-10288968-B2 · May 14, 2019 · US
Mirror display comprising a half mirror plate including a reflective polarizer and a polarization conversion layer
US-10234727-B2 · Mar 19, 2019 · US
Electronic display with multiple polarizer layers
US-2019079332-A1 · Mar 14, 2019 · US
Electronic display with an improved dead-front presentation
US-2019079333-A1 · Mar 14, 2019 · US
Light controlling apparatus and transparent display including the same
US-10228600-B2 · Mar 12, 2019 · US
Liquid crystal display device
US-10216034-B2 · Feb 26, 2019 · US
Liquid crystal display
US-2019018291-A1 · Jan 17, 2019 · US
Display device
US-2018299726-A1 · Oct 18, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02F2203/64?
- CPC G02F2203/64 is the Cooperative Patent Classification code for “Normally black display, i.e. the off state being black.”
- How many patents are filed under CPC G02F2203/64 (Normally black display, i.e. the off state being black)?
- Our database includes 129 publications tagged with this CPC code.
- Is patent activity under CPC G02F2203/64 growing?
- Publication counts under this code: 8 in 2024 vs 6 in 2025 (latest complete years).