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Coherent laser lift off microled5/24/2023 ![]() ![]() Then the radiative recombination of electron-holes occurs to produce light emission. When a forward voltage is applied on both sides of the p-n junction, that is, the positive voltage is applied on the p-type GaN side, and the negative voltage is applied on the n-type GaN side, the carriers on both sides of the p-n junction can easily move between each other. Structurally, micro led is a p-n junction contact diode that is formed by p-type GaN material and n-type GaN material while both the two materials are in close contact. Each micro led can be regarded as a pixel, each pixel can achieve address control, separate drive and self-luminous. At present, the size of a single micro led chip can be fewer than 10 μ m, which is 1% of the size of the conventional led. The display structure of the micro led is a miniaturized led array.
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