Peep preventing device, method of manufacturing peep preventing device, and display apparatus
US11327370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2018 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Feb 20, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/44
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Embodiments of the present disclosure disclose a peep preventing device. The peep preventing device includes first electrodes and a transparent insulating body on a transparent substrate. The insulating body has recesses, the first electrodes are located in the recesses, respectively, and an area of a section, taken along a plane parallel to the transparent substrate, of each recess gradually reduces in a direction away from the transparent substrate. The peep preventing device further includes transparent second electrodes each of which includes a second electrode sidewall portion covering a sidewall of one of the recesses. Closed spaces are defined between the insulating body and the second electrodes and the transparent substrate, and electrophoretic liquids are contained in the closed spaces, respectively, and contain reflective charged particles adapted to adhere to the second electrodes when a first electric field is applied between the first electrodes and the second electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.