Liquid crystal display device having fingerprint sensor
US11227138B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Feb 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133331
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A LCD device defining a display area includes a color filter substrate, a thin film transistor (TFT) substrate facing the color filter substrate, a backlight module on a side of the TFT substrate away from the color filter substrate, a transparent cover on a side of the color filter substrate away from the TFT substrate, and a fingerprint sensor in the display area. The fingerprint sensor defines a fingerprint sensing area in the display area. The LCD device further includes a light emitting diode on a side of the transparent cover adjacent to the color filter substrate. The light emitting diode is configured to emit light toward the fingerprint sensing area of the transparent cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.