LCD device and method of operation
US12051378B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 2021 |
| Grant date | Jul 30, 2024 |
| Priority date | — |
| Expiry date | Jul 13, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of operating a liquid crystal display (LCD) device is disclosed. The device comprises an LCD screen held by a housing, a camera positioned within the housing, and a backlight arranged to illuminate the LCD screen. The method comprises displaying a first image on the LCD screen by setting a first set of elements of the LCD screen to transmit light and illuminating the LCD screen with the backlight. After switching off the backlight, a second set of elements is set to transmit light with colour filters off, and an image is captured with the camera. After capturing the image, a second image is displayed on the LCD screen by setting a third set of elements to transmit light and illuminating the LCD screen with the backlight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.