Direct Design of Thin and High-Quality Direct-Lit LED Backlight Systems
The direct-lit LED backlight is a key component in large-area LCD displays. The existing methods which rely on point source assumption and irradiance feedback are less effective in compact designs in near field, and designing thin and high-quality back-lit LED backlights still remains a challenging...
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9385835/ |
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| author | Zhanghao Ding Yingli Liu Yaoguang Ma Zhenrong Zheng Min Wang Ping Zeng Jun She Rengmao Wu |
| author_facet | Zhanghao Ding Yingli Liu Yaoguang Ma Zhenrong Zheng Min Wang Ping Zeng Jun She Rengmao Wu |
| author_sort | Zhanghao Ding |
| collection | DOAJ |
| description | The direct-lit LED backlight is a key component in large-area LCD displays. The existing methods which rely on point source assumption and irradiance feedback are less effective in compact designs in near field, and designing thin and high-quality back-lit LED backlights still remains a challenging issue. In this paper, we develop a direct method for designing thin and high-quality back-lit LED backlight systems. The étendue of LED light sources is considered in the numerical calculation of the lens profiles without cumbersome Monte Carlo ray tracing, which allows us to obtain compact LED lighting modules and achieve accurate control of the near-field irradiance distribution of the backlight system. Two examples are presented to demonstrate the elegance of this method in designing thin and high-quality back-lit LED backlights. |
| format | Article |
| id | doaj-art-b59b57b23bc041b78d5888bf81fd1a6e |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-b59b57b23bc041b78d5888bf81fd1a6e2025-08-20T03:15:50ZengIEEEIEEE Photonics Journal1943-06552021-01-0113211010.1109/JPHOT.2021.30687469385835Direct Design of Thin and High-Quality Direct-Lit LED Backlight SystemsZhanghao Ding0https://orcid.org/0000-0003-0909-2485Yingli Liu1Yaoguang Ma2Zhenrong Zheng3Min Wang4Ping Zeng5Jun She6Rengmao Wu7State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, ChinaState Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, ChinaState Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, ChinaState Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, ChinaNanchang Opto-Electric R&D Institute Co., Ltd., Nanchang, ChinaCECEP Latticelighting Co., Ltd., Nanchang, ChinaYejia Optical Technology (Guangdong) Corporation, Dongguan, ChinaState Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, ChinaThe direct-lit LED backlight is a key component in large-area LCD displays. The existing methods which rely on point source assumption and irradiance feedback are less effective in compact designs in near field, and designing thin and high-quality back-lit LED backlights still remains a challenging issue. In this paper, we develop a direct method for designing thin and high-quality back-lit LED backlight systems. The étendue of LED light sources is considered in the numerical calculation of the lens profiles without cumbersome Monte Carlo ray tracing, which allows us to obtain compact LED lighting modules and achieve accurate control of the near-field irradiance distribution of the backlight system. Two examples are presented to demonstrate the elegance of this method in designing thin and high-quality back-lit LED backlights.https://ieeexplore.ieee.org/document/9385835/Backlight systemIllumination designLED arrayNon-zero étendue |
| spellingShingle | Zhanghao Ding Yingli Liu Yaoguang Ma Zhenrong Zheng Min Wang Ping Zeng Jun She Rengmao Wu Direct Design of Thin and High-Quality Direct-Lit LED Backlight Systems IEEE Photonics Journal Backlight system Illumination design LED array Non-zero étendue |
| title | Direct Design of Thin and High-Quality Direct-Lit LED Backlight Systems |
| title_full | Direct Design of Thin and High-Quality Direct-Lit LED Backlight Systems |
| title_fullStr | Direct Design of Thin and High-Quality Direct-Lit LED Backlight Systems |
| title_full_unstemmed | Direct Design of Thin and High-Quality Direct-Lit LED Backlight Systems |
| title_short | Direct Design of Thin and High-Quality Direct-Lit LED Backlight Systems |
| title_sort | direct design of thin and high quality direct lit led backlight systems |
| topic | Backlight system Illumination design LED array Non-zero étendue |
| url | https://ieeexplore.ieee.org/document/9385835/ |
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