Resolution enhancement of Micro-LED projection displays via high-frequency vibration

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering Pub Date : 2025-08-26 DOI:10.1016/j.optlaseng.2025.109271

Wenzong Lai , Weijie Hao , Jinlong Xie , Junhu Cai , Huajian Jin , Yu Chen , Ziming Yao , Yun Ye , Sheng Xu , Qun Yan , Tailiang Guo , Enguo Chen

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引用次数: 0

Abstract

Micro-LED, known for its high brightness, wide color gamut, long lifespan, and reliability, has attracted significant attention and holds great potential for self-emissive micro-projection and near-eye displays. However, current challenges in manufacturing and repair pose significant obstacles to improving the Micro-LED’s pixel density, thereby impacting further micro-display developments. To address this, this paper proposes a novel resolution-enhanced approach for Micro-LED projection display that integrates a high-frequency vibrating glass (HVG) between the Micro-LED display panel and the projection lens, achieving four times the image resolution without boosting the native resolution of the Micro-LED panel. Based on the principle of beam lateral displacement and time multiplexing, multiple spatially offset images of the Micro-LED panel is generated by controlling the HVG’s vibration angle and then superimposed by the projection lens. Experimental results confirm the spatial image shifting effect through precise control of the HVG’s vibration direction and angle, effectively doubling the number of horizontal and vertical pixels respectively. The display resolution of the Micro-LED projection is finally enhanced by four times—currently the highest in projection resolution enhancement techniques. This proposed system pushes the boundaries of self-emissive projection technology and offers a novel solution for ultra-high-resolution Micro-LED displays.

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利用高频振动增强微型led投影显示器的分辨率

Micro-LED以其高亮度、宽色域、长寿命和可靠性而闻名，在自发发光微投影和近眼显示方面具有巨大的潜力。然而，目前制造和维修方面的挑战对提高Micro-LED的像素密度构成了重大障碍，从而影响了微显示的进一步发展。为了解决这个问题，本文提出了一种用于Micro-LED投影显示器的新型分辨率增强方法，该方法在Micro-LED显示面板和投影透镜之间集成了高频振动玻璃（HVG），在不提高Micro-LED面板原生分辨率的情况下，实现了四倍的图像分辨率。基于光束横向位移和时间复用原理，通过控制HVG的振动角度产生Micro-LED面板的多个空间偏移图像，然后通过投影透镜进行叠加。实验结果证实，通过精确控制HVG的振动方向和角度，可以有效地将水平像素和垂直像素分别增加一倍，从而实现空间图像移位效果。Micro-LED投影的显示分辨率最终提高了4倍，是目前投影分辨率提高技术中最高的。该系统突破了自发光投影技术的界限，为超高分辨率Micro-LED显示器提供了一种新颖的解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Lasers in Engineering 工程技术-光学

CiteScore

8.90

自引率

8.70%

发文量

384

审稿时长

42 days

期刊介绍： Optics and Lasers in Engineering aims at providing an international forum for the interchange of information on the development of optical techniques and laser technology in engineering. Emphasis is placed on contributions targeted at the practical use of methods and devices, the development and enhancement of solutions and new theoretical concepts for experimental methods. Optics and Lasers in Engineering reflects the main areas in which optical methods are being used and developed for an engineering environment. Manuscripts should offer clear evidence of novelty and significance. Papers focusing on parameter optimization or computational issues are not suitable. Similarly, papers focussed on an application rather than the optical method fall outside the journal''s scope. The scope of the journal is defined to include the following: -Optical Metrology- Optical Methods for 3D visualization and virtual engineering- Optical Techniques for Microsystems- Imaging, Microscopy and Adaptive Optics- Computational Imaging- Laser methods in manufacturing- Integrated optical and photonic sensors- Optics and Photonics in Life Science- Hyperspectral and spectroscopic methods- Infrared and Terahertz techniques