Display device
US10747980B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2018 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/198
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed herein is a display device capable of recognizing a fine fingerprint without a complicated construction such as a bulky optical device. The display device comprises a display panel having a display area and a non-display area outside the display area; a light source disposed below the non-display area of the display panel to irradiate the display panel with light; a directional light unit disposed on an upper portion of the display panel, refracting the light supplied from the light source at a first angle to travel from the non-display area to the display area in total internal reflection, reflecting some of the totally internally reflected light at a second angle, and then supplying a light reflected by an object having biometric information to the display panel; and an optical sensor disposed below the display panel and receiving the light exited from the directional light unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.