Light control device and illumination device
US11880109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2022 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Aug 5, 2042 |
Classification
- Technology area (CPC —)General
Abstract
According to one embodiment, a light control device includes a first liquid crystal cell, a second liquid crystal cell, and a polarization conversion element disposed between the first liquid crystal cell and the second liquid crystal cell. One substrate of each of the first liquid crystal cell and the second liquid crystal cell includes an insulating substrate, and first to fourth electrodes arranged on the insulating substrate and formed in a strip shape. The electric potential difference between the first electrode and the second electrode, the electric potential difference between the second electrode and the third electrode, and the electric potential difference between the third electrode and the fourth electrode are different from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.