Grating adjusting apparatus and 3d display apparatus
US-2024160034-A1 · May 16, 2024 · US
involving active parallax barriers (involving directional light or back-light sources G02B30/33)
involving active parallax barriers (involving directional light or back-light sources G02B30/33) · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02B30/31 |
| Official title | involving active parallax barriers (involving directional light or back-light sources G02B30/33) |
| Display label | involving active parallax barriers (involving directional light or back-light sources G02B30/33) |
| Total patents | 624 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 79 |
| 2016 | 109 |
| 2017 | 71 |
| 2018 | 47 |
| 2019 | 55 |
| 2020 | 49 |
| 2021 | 50 |
| 2022 | 47 |
| 2023 | 40 |
| 2024 | 52 |
| 2025 | 23 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Three-dimensional display device
US-2015378167-A1 · Dec 31, 2015 · US
Liquid crystal display element, image display apparatus, method for driving image display apparatus, and portable device
US-9217872-B2 · Dec 22, 2015 · US
Display device
US-2015350633-A1 · Dec 3, 2015 · US
Three-dimensional display device
US-9204134-B2 · Dec 1, 2015 · US
Charged particle beam device and image display method for stereoscopic observation and stereoscopic display
US-9202669-B2 · Dec 1, 2015 · US
Display device, terminal device, and display method
US-2015338669-A1 · Nov 26, 2015 · US
2D/3D Switchable Liquid Crystal Lens Unit
US-2015331247-A1 · Nov 19, 2015 · US
Switch cell and manufacturing method thereof, display panel, and display device
US-9191653-B2 · Nov 17, 2015 · US
Display apparatus and liquid crystal barrier device
US-9188801-B2 · Nov 17, 2015 · US
3d display device
US-2015309320-A1 · Oct 29, 2015 · US
Display device and display method
US-2015304641-A1 · Oct 22, 2015 · US
Display apparatus and method of displaying three dimensional image using the same
US-9164286-B2 · Oct 20, 2015 · US
Display device
US-9167234-B2 · Oct 20, 2015 · US
Method of driving a display panel, a display panel driving apparatus for performing the method and a display apparatus having the display panel driving apparatus
US-9151952-B2 · Oct 6, 2015 · US
Directional backlight
US-2015268479-A1 · Sep 24, 2015 · US
Display device
US-2015268478-A1 · Sep 24, 2015 · US
Display device, terminal device, and display method
US-9122064-B2 · Sep 1, 2015 · US
2D/3D switchable parallax barrier display
US-9116358-B2 · Aug 25, 2015 · US
3D display devices
US-9110299-B2 · Aug 18, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02B30/31?
- CPC G02B30/31 is the Cooperative Patent Classification code for “involving active parallax barriers (involving directional light or back-light sources G02B30/33).”
- How many patents are filed under CPC G02B30/31 (involving active parallax barriers (involving directional light or back-light sources G02B30/33))?
- Our database includes 624 publications tagged with this CPC code.
- Is patent activity under CPC G02B30/31 growing?
- Publication counts under this code: 52 in 2024 vs 23 in 2025 (latest complete years).