Light route control member and display having the same
US12313950B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2020 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Sep 21, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/44
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical path control member according to an embodiment comprises: a first substrate; a first electrode provided on the upper portion of the first substrate; a second substrate provided on the first substrate; a second electrode provided on the lower portion of the second substrate; and an optical conversion unit provided between the first electrode and the second electrode, wherein the optical conversion unit comprises partition wall parts and accommodation parts which are alternately arranged. The accommodation parts have a light transmission rate that varies according to the application of a voltage, and the accommodation parts comprise a plurality of unit accommodation cells spaced apart from each other, and comprises a dispersion and light-absorbing particles which are dispersed in the dispersion. The light-absorbing particles comprise first particles and second particles, wherein the diameter of the first particles is greater than that of the second particles, and the surfaces of the first particles and the surfaces of the second particles are charged with the same polarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.