Overview
- Researchers in Sweden built a proof‑of‑concept display with approximately 560‑nanometre pixels that exceeds 25,000 pixels per inch.
- Tungsten oxide nanoparticles control color through their size and arrangement, and a low voltage can switch the pixels to black.
- The screen renders images by reflecting ambient light rather than emitting its own, supporting energy‑efficient operation near the eye.
- A 1.4 × 1.9 mm demonstration reproduced Gustav Klimt’s The Kiss with fine detail on a pupil‑sized surface.
- The team cites potential uses in VR and AR microdisplays and acknowledges substantial engineering work remains for scaling and integration.