Effects of unit size on current density and illuminance of micro-LED-array
- 131 Downloads
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.
Unable to display preview. Download preview PDF.
- Fan Z Y, Lin J Y and Jiang H X, J. Appl. Phys. 41, 094001-1 (2008).Google Scholar
- Marco Mendes, Jie Fu and Cristian Porneala, Lasers in the Manufacturing of LEDs, Proc. of SPIE 7584, 75840T1 (2010).Google Scholar
- Liu H, Tang Z R and Shi T L, Optical and Thermal Modeling of Ultraviolet-LED Arrays Packaging for Curing Application, SPIE 7279, 72791k–1 (2009).Google Scholar
- Fan J M, Wang L C and Guo J X, Optimized Design on High-power GaN-based Micro-LEDs, SPIE 6841, 684108–1 (2007).Google Scholar