Light emitting diode provided with patterned substrate
A technology of light-emitting diodes and graphics, applied to electrical components, circuits, semiconductor devices, etc., can solve problems such as forward voltage, light intensity, reverse leakage current, wavelength uniformity, etc., to improve wavelength uniformity, improve internal Effect of Quantum Efficiency and Brightness Improvement
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[0020] Example 1
[0021] See attached figure 1 , A light emitting diode with a patterned substrate, its structure includes a substrate, an N-type semiconductor layer, an active layer and a P-type semiconductor layer. The substrate is divided into 5 concentric ring-shaped areas with the center as the center, and the ring-shaped area has patterns distributed in an array; the vertical depth of the pattern is 3 microns, the cross-section of the pattern is elliptical, and the elliptical shape in the 5 ring-shaped areas The horizontal size is 2, 4, 6, 8, and 10 microns from the inside to the outside, the longitudinal size is 1.5, 3, 4.5, 6, and 7.5 microns, and the pattern pitch is 4, 8, 12, 16, and 20 microns.
Example Embodiment
[0022] Example 2
[0023] A light-emitting diode with a patterned substrate. Its structure includes a substrate, an N-type semiconductor layer, an active layer and a P-type semiconductor layer. The substrate is divided into 6 concentric ring-shaped areas with the center as the center, and the ring-shaped area has patterns distributed in an array; the cross-section of the pattern is elliptical, and the lateral size of the ellipse in the 6 ring-shaped areas is 2 from the inside to the outside. , 2.1, 2.2, 2.3, 2.4, 2.5 microns, the vertical dimension is 1.5, 1.6, 1.7, 1.8, 1.9, 2 microns, the pattern pitch is 4, 4.2, 4.4, 4.6, 4.8, 5 microns, the vertical depth of the pattern The order is 0.5, 0.6, 0.7, 0.8, 0.9, 1 micron.
Example Embodiment
[0024] Example 3
[0025] A light-emitting diode with a patterned substrate. Its structure includes a substrate, an N-type semiconductor layer, an active layer and a P-type semiconductor layer. The substrate is divided into 5 concentric ring-shaped areas with the center as the center, and the ring-shaped area has patterns distributed in an array; the cross-section of the pattern is square, and the horizontal and longitudinal dimensions of the square in the 5 ring-shaped areas are from the inside to the outside. The order is 1, 1.5, 2, 2.5, 3 microns, the pattern pitch is 2, 9, 16, 23, 30 microns, and the vertical depth of the pattern is 0.5, 0.6, 0.7, 0.8, 0.9 microns.
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