Fingerprint recognition optical film, and backlight unit and liquid crystal display device comprising the film optical
US11288486B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jun 11, 2020 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Jun 11, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fingerprint recognition optical film which transmits an infrared ray (IR) is introduced. The fingerprint recognition optical film may include a base film and a lens pattern layer including a plurality of lenses attached to one surface of the base film. Here, the plurality of lenses in the lens pattern layer are parallelly arranged with a predetermined distance and a flat pattern portion is formed among the lenses to transmit the infrared ray wherein a protrusion direction of the plurality of lenses is arranged to face to a light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.