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Effects of unit size on current density and illuminance of micro-LED-array

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Abstract

A 300 μm×300 μm light emitting diode (LED) chip is divided into nine 80 μm×80 μm units with 30 μm spacing between adjacent ones. After arraying, the total saturation light output power and the maximum injection current are enhanced by 5.19 times and nearly 7 times, respectively. In addition, the test results demonstrate that the illuminance uniformity on the receiving surface reaches the optimum when the spacing between the arrays is equal to the maximum flat condition. The larger the number of arrays, the greater the area with uniform illuminance on the receiving surface.

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Authors and Affiliations

  1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China

    Chao Tian  (田超), Shu-xu Guo  (郭树旭) & Feng-li Gao  (郜峰利)

  2. Semiconductor Manufacturing North China (Beijing) Corporation, Beijing, 100176, China

    Chao Tian  (田超)

  3. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China

    Jing-qiu Liang  (梁静秋) & Zhong-zhu Liang  (梁中翥)

Authors
  1. Chao Tian  (田超)
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  2. Shu-xu Guo  (郭树旭)
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  3. Jing-qiu Liang  (梁静秋)
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  4. Zhong-zhu Liang  (梁中翥)
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  5. Feng-li Gao  (郜峰利)
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Corresponding author

Correspondence to Feng-li Gao  (郜峰利).

Additional information

This work has been supported by the Young Scientists Fund of the National Natural Science Foundation of China (No.61204055).

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Tian, C., Guo, Sx., Liang, Jq. et al. Effects of unit size on current density and illuminance of micro-LED-array. Optoelectron. Lett. 13, 84–89 (2017). https://doi.org/10.1007/s11801-017-7002-0

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  • DOI: https://doi.org/10.1007/s11801-017-7002-0

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