Apparatus and method for performing a mirror function in a portable terminal
US8115711B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2006 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Oct 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133545
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is an apparatus and method for embodying mirror function in a portable terminal by which a user can use an LCD of the portable terminal as a mirror, with a rear polarizer of the LCD constructed to allow the LCD to reflect incident light and to perform as a mirror when powered off, and to perform the original function of LCD when powered on. The LCD may further comprise a front polarizer for polarizing the external incident light to a certain direction, a liquid crystal for deflecting the incident light from the front polarizer about a molecular axis in the liquid crystal and arraying the light parallel to the direction of an electric field to pass the light along the molecular axis, and a rear polarizer for reflecting incident light from the liquid crystal when power is not applied and allowing the incident light to pass by the liquid crystal when power is applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.