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没有第二个镜头的宽心形迷你LED作为一个大面积,超高亮度和平面光源

Zhi Ting Ye, Chia Chun Hu, Yang Jun Zheng

|March 5, 2024

概括

这项研究引入了一种新的包装,用于宽心形角光分布迷你发光二极管 (WHS迷你LED),以提高户外显示的亮度. 新设计显著降低了耐热性,使高性能工业和广告显示器成为可能.

科学领域:

光电学是指光电子产品.
材料科学材料科学材料科学
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背景情况:

越来越多的人对高亮度户外和工业显示器的需求.
在传统的LED包装中,降低热阻力和防止透镜脱落的挑战.
需要在光源组件中加强光分发和热管理.

研究的目的:

提出和验证一个新的包装结构为宽心形角光分布迷你发光二极管 (WHS迷你LED).
为了增强发光角度和降低高亮度显示应用的热阻.
为了解决LED包装中的二次光学镜片的局限性.

主要方法:

直接将芯片粘合到基板上,采用金属环氧化工艺,以最大限度地降低热阻.
开发用于增强发光角度的初级光学设计.
在背光模块 (BLM) 中集成WHS迷你LED与量子点 (QD) 膜和亮度增强膜 (BEF).

主要成果:

在WHS迷你LED包中实现了6.7K/W的总热阻.
证明了448个WHS迷你LED足以用于55英寸的BLM.
在液晶模块 (LCM) 中实现了平均发光率2234.2cd/m2,90%的均性和119.3%的NTSC.

结论:

拟议的WHS迷你LED包装结构有效降低了热阻,并提高了光的分布.
这种设计为大面积,高亮度和高颜色和度的户外广告和工业显示器提供了有竞争力的解决方案.
与传统方法相比,这种包装方法提供了更好的性能和可靠性.

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