In-screen fingerprint identification apparatus and electronic device
US11417141B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 14, 2019 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Aug 14, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1329
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An in-screen fingerprint identification apparatus includes a display panel and a fingerprint identification module. The display panel includes a backlight module, a liquid crystal layer, and a cover glass, which are sequentially stacked. The cover glass includes a fingerprint identification area. The fingerprint identification module includes a light source, a photosensor, and light guiding layers disposed on the cover glass. The light guiding layers at least cover portions of opposite sides of the cover glass, respectively, such that light emitted by the light source after being reflected in the cover glass is guided to the fingerprint identification area. The photosensor is disposed in the display panel and corresponds to the fingerprint identification area to receive an optical signal of the light source emitted by the light source after being reflected by a finger in the fingerprint identification area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.