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

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...

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Veröffentlicht in:	Optoelectronics letters 2017-03, Vol.13 (2), p.84-89
1. Verfasser:	田超郭树旭梁静秋梁中翥郜峰利
Format:	Artikel
Sprache:	eng
Schlagworte:	Arrays Illuminance Injection current Lasers LED阵列 Light emitting diodes Optical Devices Optics Photonics Physics Physics and Astronomy 单位发光二极管尺寸微型注入电流照度均匀性电流密度
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Beschreibung
Zusammenfassung:	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.
ISSN:	1673-1905 1993-5013
DOI:	10.1007/s11801-017-7002-0