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Optically Aligned Quantum Rod Enhanced Film

A quantum rod, photo-alignment technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as reducing the expectation of large-scale LCD manufacturing

Active Publication Date: 2021-11-05
THE HONG KONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these methods offer very limited flexibility in local alignment orientation, which lowers their expectations for large-scale fabrication of LCDs.

Method used

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  • Optically Aligned Quantum Rod Enhanced Film
  • Optically Aligned Quantum Rod Enhanced Film
  • Optically Aligned Quantum Rod Enhanced Film

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Embodiment Construction

[0025] Exemplary embodiments of the present invention take advantage of the photoalignment of QRs in solid thin films, which provides the flexibility to control both local and long-range alignment directions. Photo-alignment techniques, which have been widely used for the purpose of controlling the orientation of liquid crystal molecules, can be combined with the effect of QR self-assembly to achieve local orientation of QRs distributed in liquid crystal polymer (LCP) films.

[0026] Exemplary embodiments of the present invention provide a brightness enhancement film for LCDs by photoaligning QRs distributed in a polymerizable monomer film to provide a photoaligned quantum rod enhancement film (QREF). on top of the photoalignment layer. Photoalignment QREF films are capable of emitting light at one or more selected wavelengths in response to being excited by pump light and provide an improved color gamut (similar to QDEFs). Photoalignment QREF films also provide highly desira...

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Abstract

A photoalignment quantum rod enhancement film (QREF) comprises: a substrate (802,805); a photoalignment layer disposed on the substrate (802,805); and a polymer layer disposed on the photoalignment layer, the The polymer layer includes a plurality of quantum rods configured to emit light of one or more wavelengths in response to the pump light, and the plurality of quantum rods are based on the photoalignment layer and alignment axis alignment allow.

Description

[0001] Cross References to Related Applications [0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 391,731, filed May 10, 2016, which is incorporated herein by reference. Background technique [0003] Quantum dot enhancement films (QDEFs) are engineered films containing quantum dots that have become very popular in modern liquid crystal displays (LCDs) to provide extended color gamuts. The color gamut of modern LCDs equipped with QDEFs can go from 60-70% of the color triangle to more than 100% of the color triangle, which is a great success. These films are widely used in displays for TVs, tablet PCs, and the like. It has also been reported that quantum dot displays are brighter and use less energy than other high performance display technologies such as organic light emitting diode (OLED) technology. However, for existing LCDs, the total optical efficiency is still limited to 3-5%. Color filters and color polarizers each typic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1337
CPCG02F1/133609G02F2202/36G02F1/133614G02F1/133715G02F1/133528G02F1/133603G02F1/133621
Inventor 阿比谢克·库马尔·斯里瓦斯塔瓦张万隆弗拉迪米尔·格里戈里耶维奇·奇格里诺夫郭海成
Owner THE HONG KONG UNIV OF SCI & TECH