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Improvement in Light Output of Ultraviolet Light-Emitting Diodes with Patterned Double-Layer ITO by Laser Direct Writing 期刊论文
Nanomaterials, 2019, 卷号: 9, 期号: 2, 页码: 9
作者:  J.Zhao;  X.H.Ding;  J.H.Miao;  J.F.Hu;  H.Wan
收藏  |  浏览/下载：1/0  |  提交时间：2020/08/24
The Influence of Junction Temperature Variation of LED on the Lifetime Estimation During Accelerated Aging Test 期刊论文
Ieee Access, 2019, 卷号: 7, 页码: 4773-4781
作者:  X.X.Wang;  L.Jing;  Y.Wang;  Q.Gao;  Q.Sun
收藏  |  浏览/下载：3/0  |  提交时间：2020/08/24
286 nm monolithic multicomponent system 期刊论文
Japanese Journal of Applied Physics, 2019, 卷号: 58, 期号: 1, 页码: 5
作者:  J.L.Yuan;  Y.Jiang;  Z.Shi;  X.M.Gao;  Y.J.Wang
收藏  |  浏览/下载：0/0  |  提交时间：2020/08/24
Effect of Dielectric Distributed Bragg Reflector on Electrical and Optical Properties of GaN-Based Flip-Chip Light-Emitting Diodes 期刊论文
Micromachines, 2018, 卷号: 9, 期号: 12, 页码: 9
作者:  Zhou, S. J.;  Xu, H. H.;  Liu, M. L.;  Liu, X. T.;  Zhao, J.
收藏  |  浏览/下载：5/0  |  提交时间：2019/09/17
Microwave-Assisted Heating Method toward Multicolor Quantum Dot-Based Phosphors with Much Improved Luminescence 期刊论文
Acs Applied Materials & Interfaces, 2018, 卷号: 10, 期号: 32, 页码: 27160-27170
作者:  Zhou, D.;  Wang, Y.;  Tian, P. F.;  Jing, P. T.;  Sun, M. L.
收藏  |  浏览/下载：2/0  |  提交时间：2019/09/17
New LED illumination optical engine for micro-projection display (EI CONFERENCE) 会议论文
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
Feng C.; Meng Z.; Sun W.
收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25
A new optical engine consisting of LEDs  rectangular CPC  rectangular lens array and micro display chip DMD is designed by using of KOLA illumination algorithm for micro-projection display. Detail description and analysis of the rectangular CPC and rectangular lens array are provided. The influence due to the size of rectangular CPC and rectangular lens array is analysed for illuminance uniformity on the DMD chip and light energy efficiency of the optical engine system by software ZEMAX. Based on the analysis of parameter of rectangular lens array  the size of rectangular lens array more decrease the illumination uniformity. Experimental results show that the proposed illumination light optical engine can obtain perfect rectangular focula with higher light uniformity more than 90 % and higher energy efficiency of 40 % to meet the needs of micro-projection display  at the same time the designed illumination optical engine compared with other uniformizing light algorithm have advantages such as: lesser capacity  high illumination uniformity. 2010 Copyright SPIE - The International Society for Optical Engineering.  
LED optical engine based on rectangular CPC for micro-projection display (EI CONFERENCE) 会议论文
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
Wang S.-Y.; Sun W.-J.; Bu W.-B.; Meng Z.
收藏  |  浏览/下载：9/0  |  提交时间：2013/03/25
With applications in digital display  consumer electronics  medicine  automotive lighting  traffic signals  and general illumination  the light-emitting diode (LED) is the world's most efficient light source being mass produced today[1]. However  high cost is the main factor restricting widespread application of LED lighting  and the packaging is the most expensive aspect of LED products. Light emitting diodes (LED) are regarded as the most important light sources in solid-state lighting for their advantages in energy efficiency  long life  vivid colors  high reliability  environmental protection  safety and multiple applications. However  application of LEDs in projection display exist many questions such as low illuminance uniformity and low energy efficiency by reason of luminescence distribution and constructure specificity for LED  the study on application of LED in the micro-projection display and projection display is reported[2-8]. Considering the question mensioned above the rectangular CPC(Compound Parabolic Concentrator) system with three-color LED is applied in the projection display. 2009 SPIE.  
Study on chromaticity balance for LED exposure system (EI CONFERENCE) 会议论文
International Symposium on Photoelectronic Detection and Imaging 2007 - Laser, Ultraviolet, and Terahertz Technology, September 9, 2007 - September 12, 2007, Beijing, China
Yao C.-B.; Wang S.-Y.; Rong X.-W.; Meng Z.; Sun W.-J.
收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25
A standard white light compounding algorithm based on combination of CCD illumination acquisition with computer control is presented for LEDs. The computer adjust and control the working current of LEDs by using three-color LEDs illumination acquired by CCD camera  achieved chromaticity coordinates error between compounded white light and standard white light D65 less than the threshold beforehand setted by this technique  then acquiring needed standard white light. Compounded white light meet the chromaticity error demand that is able to be changed  at the same time the CCD illumination acquisition system is eliminated. The proposed algorithm improved the light energy utilization efficiency of LED  and eliminated the offset of central wavelength and chromaticity coordinates due to work current change of LEDs. Experimental results show that the proposed algorithm achieved lesser chromaticity error uv=0.001 relative to standard white light D65  enhanced chromaticity uniformity of illumination field.  
Study on chroma balance based on grating spectrometer for LED (EI CONFERENCE) 会议论文
Light-Emitting Diode Materials and Devices II, November 12, 2007 - November 14, 2007, Beijing, China
Sun W.-J.; Wang S.-Y.; Yin Y.-Z.; Rong X.-W.; Meng Z.
收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25
A standard white light compounding algorithm based on combination of choma coordinates acquisition system with computer working current control system is presented for three-color LED. The chroma coordinates acquisition system consist of grating spectrometer and integrating sphere. The computer adjust and control the working current of three-color LED  then achieved chroma coordinates error between the compounded white light and standard white light D65  until the chroma coordinates is less than the threshold beforehand set by this technique. The compounded white light meet the chroma error demanded that is able to be changed  at the same time the chroma coordinates acquisition system and the working current control system are eliminated. The proposed algorithm the offset of central wavelength and the change of chroma coordinates due to working current variety for LEDs. Experimental results show that the proposed algorithm achieved lesser chroma error uv=0.001 relative to standard white light D65  enhanced chroma uniformity of illumination field.  
Study on the fabrication of orange micro-LED arrays for display (EI CONFERENCE) 会议论文
ICO20: Display Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
Jin X.; Liang J.; Li J.; Zhao L.; Wang W.
收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25
Arrays of micro-sized LEDs which can be used as microdisplays have been demonstrated in recent years. In order to reduce the input and output connections to the arrays  we employ a matrix addressable architecture  in which all the pixels in each row are connected by a common metal line on the top of the window layer (top electrode) or at the base of substrate(bottom electrode). Decreasing the size of electrodes makes for minimizing the size of device. The optic and electric isolation and good ohmic contact are also helpful to obtain superior optical and electrical performance. We describe a procedure of fabrication of AlGalnP-based orange micro-LED by wet etching. The structure of devices is etched using both isotropic and anisotropic etchant. The pixel size is about 16um 20um  and there are 1000 818 pixels in the light emitting chip whose diagonal is 1-in.  

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