High-Throughput and Controllable Fabrication of Soft Screen Protectors with Microlens Arrays for Light Enhancement of OLED Displays

被引:25
作者
Ding, Yekai [1 ]
Lin, Yinyin [1 ]
Zhao, Lidan [1 ]
Xue, Chang [1 ]
Zhang, Mengying [2 ]
Hong, Yaying [3 ]
Peng, Suili [4 ]
Wen, Weijia [4 ]
Wu, Jinbo [1 ]
机构
[1] Shanghai Univ, Mat Genome Inst, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
[3] Hong Kong Univ Sci & Technol, Fok Ying Tung Res Inst, Guangzhou 511458, Peoples R China
[4] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Peoples R China
来源
ADVANCED MATERIALS TECHNOLOGIES | 2020年 / 5卷 / 10期
基金
中国国家自然科学基金;
关键词
dewetting; light enhancement; microlens arrays; organic light-emitting diodes; soft screen protectors; total internal reflection; HIGH NUMERICAL APERTURE; LENS ARRAYS; EMITTING DEVICES; EFFICIENCY; FILMS;
D O I
10.1002/admt.202000382
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this work, soft polydimethylsiloxane (PDMS) screen protectors with microlens arrays (MLAs) are fabricated through a feasible high-throughput approach. Based on the lateral size scaling effect during discontinuous dewetting, desired SU-8 convex MLAs with simultaneously controlled focal length (f) and numerical aperture (NA) are produced on a single substrate. A replication technique is employed to prepare PDMS MLAs with the same structure as that of the SU-8 MLAs. The contact angle and other optical parameters of the MLAs can be tuned over a wide range based on the number of sliding times and lateral size. When the diameter of the MLAs decreases from 100 to 10 mu m, the curvature changes from 0.07 to 0.17 for the single-layer MLAs and from 0.15 to 0.31 for the three-layer MLAs. The enhancement effect of MLAs on the light from wide-angle organic light-emitting diode (OLED) packaging modules is investigated. It is found that PDMS films containing MLAs can increase the brightness of an OLED by 14.13%. The fabricated PDMS concave MLAs can serve as flexible screen protectors to shield OLEDs from damage while enhancing the brightness to improve the energy efficiency.
引用
收藏
页数:9
相关论文
共 49 条
[1]   Integral three-dimensional imaging with digital reconstruction [J].
Arimoto, H ;
Javidi, B .
OPTICS LETTERS, 2001, 26 (03) :157-159
[2]   Control of Femtoliter Liquid on a Microlens: A Way to Flexible Dual-Microlens Arrays [J].
Bao, Lei ;
Bat-El Pinchasik ;
Lei, Lei ;
Xu, Qiwei ;
Hao, Hao ;
Wang, Xihua ;
Zhang, Xuehua .
ACS APPLIED MATERIALS & INTERFACES, 2019, 11 (30) :27386-27393
[3]   In vivo fluorescence imaging with high-resolution microlenses [J].
Barretto, Robert P. J. ;
Messerschmidt, Bernhard ;
Schnitzer, Mark J. .
NATURE METHODS, 2009, 6 (07) :511-U61
[4]   Fabrication of flexible microlens arrays through vapor-induced dewetting on selectively plasma-treated surfaces [J].
Bi, Xiaopeng ;
Li, Wen .
JOURNAL OF MATERIALS CHEMISTRY C, 2015, 3 (22) :5825-5834
[5]   Surface-tension-confined droplet microfluidics [J].
Chen, Xinlian ;
Wu, Han ;
Wu, Jinbo .
CHINESE PHYSICS B, 2018, 27 (02)
[6]   Reducing optical losses in organic solar cells using microlens arrays: theoretical and experimental investigation of microlens dimensions [J].
Chen, Yuqing ;
Elshobaki, Moneim ;
Gebhardt, Ryan ;
Bergeson, Stephen ;
Noack, Max ;
Park, Joong-Mok ;
Hillier, Andrew C. ;
Ho, Kai-Ming ;
Biswas, Rana ;
Chaudhary, Sumit .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2015, 17 (05) :3723-3730
[7]   Microlens array induced light absorption enhancement in polymer solar cells [J].
Chen, Yuqing ;
Elshobaki, Moneim ;
Ye, Zhuo ;
Park, Joong-Mok ;
Noack, Max A. ;
Ho, Kai-Ming ;
Chaudhary, Sumit .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (12) :4297-4302
[8]   Selective Surface Smoothening of Polymer Microlenses by Depth Confined Softening [J].
Chidambaram, Nachiappan ;
Kirchner, Robert ;
Fallica, Roberto ;
Yu, Libo ;
Altana, Mirco ;
Schift, Helmut .
ADVANCED MATERIALS TECHNOLOGIES, 2017, 2 (05)
[9]   Size-Controlled Patterning of Single-Crystalline Perovskite Arrays toward a Tunable High-Performance Microlaser [J].
Du, Huigang ;
Wang, Kaiyang ;
Zhao, Lidan ;
Xue, Chang ;
Zhang, Mengying ;
Wen, Weijia ;
Xing, Guichuan ;
Wu, Jinbo .
ACS APPLIED MATERIALS & INTERFACES, 2020, 12 (02) :2662-2670
[10]   Enhancement of light extraction efficiency of InGaN quantum wells light emitting diodes using SiO2/polystyrene microlens arrays [J].
Ee, Yik-Khoon ;
Arif, Ronald A. ;
Tansu, Nelson ;
Kumnorkaew, Pisist ;
Gilchrist, James F. .
APPLIED PHYSICS LETTERS, 2007, 91 (22)