Chiral smectic liquid crystal device
US6710842B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Nov 23, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A chiral smectic liquid crystal device includes chiral smectic liquid crystal exhibiting a phase transition series on temperature decrease of (a) Iso, Ch and SmC* or (b) Iso and SmC*, a pair of oppositely disposed substrates which sandwich the liquid crystal to form a plurality of pixels, each substrate provided with an electrode for applying a voltage to the liquid crystal and a uniaxial alignment axis for aligning the liquid crystal, and means for providing a difference in potential between the substrates of at least 100 mV when no external electric field is applied in a temperature range of Tc±2° C. where Tc denotes a phase transition temperature from Ch to SmC* or from Iso to SmC. At least one substrate is provided with a polarizer, and each pixel is provided with an active element connected to an associated electrode on at least one substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.