Packaging method of GaAs-based LED lamp bead
A technology of LED lamp beads and packaging methods, which is applied in the field of optoelectronics, can solve the problems of conductive silver glue leakage and other problems, and achieve the effect of eliminating leakage, avoiding leakage, and simple operation
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[0027] Example 1:
[0028] A packaging method for GaAs-based LED lamp beads, comprising the following steps:
[0029] (1) A GaAs-based light-emitting diode chip epitaxial layer is grown on a GaAs substrate 1, and the P-electrode 3 and N-electrode of the light-emitting diode chip are prepared by conventional P-side metal deposition, photolithography P-electrode, thinning, and N-side metal deposition methods 5;
[0030] (2) P-cutting the GaAs-based light-emitting diode chip obtained in step (1), such as figure 1 As shown, a diamond knife is used to form a strip-shaped dicing track 4 around the P electrode 3, and the cycle of the dicing track 4 is consistent with the cycle of the P electrode 3 and the dicing track 4 does not completely divide the GaAs-based light-emitting diode chip (the epitaxial layer has been cut through And cut to the substrate), carry out the conventional test to the cut chip to obtain the chip photoelectric parameters, and can adopt the conventional metho...
Example Embodiment
[0034] Example 2:
[0035] A packaging method for GaAs-based LED lamp beads, as shown in Embodiment 1, the difference is that in step (2), the cutting depth is 1 / 4 of the chip thickness, and the chip thickness here includes the thickness of the GaAs substrate and the epitaxial layer. thickness;
[0036] The width of the dicing lanes 4 is 25 μm.
Example Embodiment
[0037] Example 3:
[0038] A packaging method for GaAs-based LED lamp beads, as shown in Embodiment 1, the difference is that the thickness of the magnetic packaging metal substrate is 30 μm.
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