Display device with fingerprint identification function under screen
US11373434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2020 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Sep 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1368
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fingerprint-recognition function in a backlit display device includes a cover plate, a display panel, a backlight module, and a fingerprint recognition module. The cover plate has an operating surface defining a touchable fingerprint identification area. The backlight module emits light for the display panel to display images and, as a first detection light, backlighting incident on the fingerprint identification area reflected by a fingerprint is taken and recognized by the recognition module. Along a thickness direction of the display device, a projection of the fingerprint identification module on the cover plate at least partially overlaps with the fingerprint identification area, and supplementary side-mounted sources emitting non-visible light enhance the accuracy of detection of the recognition module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.