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用于可见范围内高分辨率显示（HRD）的发光纳米像素结构（LENS）的设计与建模

Design and Modeling of Light Emitting Nano-Pixel Structure (LENS) for High Resolution Display (HRD) in a Visible Range.

作者信息

Eisenfeld Tsion, Karsenty Avi

机构信息

Advanced Laboratory of Electro-Optics (ALEO), Department of Applied Physics/Electro-Optics Engineering, Lev Academic Center, 9116001 Jerusalem, Israel.

Nanotechnology Center for Education and Research, Lev Academic Center, 9116001 Jerusalem, Israel.

出版信息

Nanomaterials (Basel). 2020 Jan 27;10(2):214. doi: 10.3390/nano10020214.

DOI:10.3390/nano10020214
PMID:32012673
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7074958/
Abstract

LENS (Light Emitting Nano-pixel Structure), a new nano-metric device, was designed, simulated, and modeled for feasibility analysis, with the challenge of combining high resolution and high brightness for display, essentially adapted for Augmented Reality (AR) and Virtual Reality. The device is made of two parts: The first one is a reflective nano-cone Light Emitting Device (LED) structure to reduce the Total Internal Reflection effects (TIR), and to enable improved light extraction efficiency. The second part is a Compound Parabolic Concentrator (CPC) above the nano-LED to narrow the outgoing light angular distribution so most of the light would be "accepted" by an imaging system. Such a way is drastically limiting any unnecessary light loss. Our simulations show that the total light intensity gain generated by each part of the pixel is at least 3800% when compared to a typical flat LED. It means that, for the same electrical power consumption, the battery life duration is increased by 38. Furthermore, this improvement significantly decreases the display thermal radiation by at least 300%. Since pixel resolution is critical to offer advanced applications, an extensive feasibility study was performed, using the LightTools software package for ray tracing optimization. In addition to the simulation results, an analytical model was developed. This new device holds the potential to change the efficiency for military, professional and consumer applications, and can serve as a game changer.

摘要

发光纳米像素结构（LENS）是一种新型纳米器件，为可行性分析而设计、模拟和建模，面临着为显示结合高分辨率和高亮度的挑战，主要适用于增强现实（AR）和虚拟现实。该器件由两部分组成：第一部分是反射纳米锥发光器件（LED）结构，用于减少全内反射效应（TIR），并提高光提取效率。第二部分是位于纳米LED上方的复合抛物面聚光器（CPC），用于缩小出射光的角分布，以便成像系统能够“接收”大部分光线。这种方式极大地限制了任何不必要的光损失。我们的模拟表明，与典型的平面LED相比，像素各部分产生的总光强增益至少为3800%。这意味着，在相同的电力消耗下，电池续航时间增加了38倍。此外，这种改进显著降低了显示热辐射至少300%。由于像素分辨率对于提供先进应用至关重要，因此使用LightTools软件包进行光线追踪优化，开展了广泛的可行性研究。除了模拟结果外，还开发了一个分析模型。这种新器件有潜力改变军事、专业和消费应用的效率，并可成为一个改变游戏规则的因素。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b0d/7074958/af0e5f5de7f7/nanomaterials-10-00214-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b0d/7074958/d9d197d056b8/nanomaterials-10-00214-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b0d/7074958/6e1889987cbf/nanomaterials-10-00214-g015.jpg
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Full-Color Single Nanowire Pixels for Projection Displays.用于投影显示的全彩单纳米线像素。
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