TIR-modulated wide viewing angle display
US9939707B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2013 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Sep 4, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/068
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Improvements and modifications are provided in the type of frustrated total internal reflection (TIR) systems described in U.S. Pat. Nos. 6,885,496; 6,891,658; 7,286,280; 7,760,417 and 8,040,591. The improvements and modifications include various methods to improve display operation of hemispherical beaded front plane TIR systems such as (a) inhibit or prevent the undesired non-uniform distribution and lateral migration of charged, electrophoretically mobile, TIR frustrating particles by encapsulating or tethering the particles to the beaded front plane surface; (b) inhibit or prevent the settling of the TIR frustrating particles such as modifying the viscosity of the low refractive index medium; and (c) inhibit or prevent the non-uniformity of the applied electric field during display operation such as using a conforming rear electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.