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Spatial light modulator and holographic 3d display device
US2025298371A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025298371-A1 |
| Application number | US-202519087566-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 23, 2025 |
| Priority date | Mar 25, 2024 |
| Publication date | Sep 25, 2025 |
| Grant date | — |
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Abstract
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To enable independent driving of pixels with a fine pixel pitch, a spatial light modulator includes: a first substrate; a second substrate facing the first substrate; and a liquid crystal layer located between the first substrate and the second substrate, wherein the first substrate has, on a substrate surface thereof, driving electrodes located on both sides of each of pixels arranged in a first direction among pixels arranged in a matrix and ground electrodes located between rows of driving electrodes arranged in the first direction.
First claim
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What is claimed is: 1 . A spatial light modulator comprising: a first substrate; a second substrate facing the first substrate; and a liquid crystal layer located between the first substrate and the second substrate, wherein the first substrate has, on a substrate surface thereof, driving electrodes located on both sides of each of pixels arranged in a first direction among pixels arranged in a matrix and ground electrodes located between rows of driving electrodes arranged in the first direction. 2 . A holographic 3D display device comprising the spatial light modulator according to claim 1 , wherein the liquid crystal layer is driven by a horizontal electric field between the driving electrodes located on both sides of each of the pixels arranged in the first direction. 3 . The holographic 3D display device according to claim 2 , wherein the liquid crystal layer is driven by a potential difference between the driving electrodes located on both sides of each of the pixels arranged in the first direction. 4 . The holographic 3D display device according to claim 2 , wherein in an initial alignment state in which liquid crystal molecules in the liquid crystal layer are aligned perpendicularly to the substrate, alignment of the liquid crystal molecules is changed by the horizontal electric field. 5 . The holographic 3D display device according to claim 2 , wherein a pixel pitch of the pixels in the first direction is 1 μm or less. 6 . The holographic 3D display device according to claim 2 , having a viewing zone angle of 30° or more.
Assignees
Inventors
Classifications
Having optical element registered to each pixel · CPC title
Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the substrates · CPC title
characterised by their geometrical arrangement · CPC title
Addressing the hologram to an active spatial light modulator · CPC title
Electrically addressed SLM [EA-SLM] · CPC title
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- What does patent US2025298371A1 cover?
- To enable independent driving of pixels with a fine pixel pitch, a spatial light modulator includes: a first substrate; a second substrate facing the first substrate; and a liquid crystal layer located between the first substrate and the second substrate, wherein the first substrate has, on a substrate surface thereof, driving electrodes located on both sides of each of pixels arranged in a fir…
- Who is the assignee on this patent?
- Univ Tohoku
- What technology area does this patent fall under?
- Primary CPC classification G03H1/0005. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Sep 25 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).