Fingerprint identification display panel and display device
US10467452B2 · kind B2 · utility
2Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2017 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Jul 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133388
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fingerprint identification display panel and a display device are disclosed. For the liquid crystal layer at the position corresponding to the first opening area corresponding to the photosensitive sensing unit in the light shielding layer, the initial direction of the long axis of the liquid crystal molecules is set to form an angle of 45 degrees with the transmission axis direction of the upper polarizer, and the liquid crystal layer at the position corresponding to the first opening area is controlled to form an equivalent quarter-wave plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.