Quantum dot-based white LED device and manufacturing method thereof
A technology of LED devices and manufacturing methods, applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of secondary absorption of light emission, insufficient color rendering of white light LEDs, etc., achieve high color rendering index, improve luminous efficiency, and color gamut broad effect
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[0026] The quantum dot-based white light LED device and its manufacturing method of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0027] see figure 1 , the present invention discloses a white light LED device 1 based on quantum dots. The white light LED device 1 based on quantum dots includes an LED chip 11, a light conversion layer 12 coated on the LED chip 11, and a The carrier 13 of the chip 11 , the LED chip 11 is flip-chip mounted in the carrier 13 .
[0028] see figure 2 , the LED chip 11 includes a substrate 111, an N-type gallium nitride 112 covering the substrate 111, a quantum well light-emitting layer 113 partially covering the N-type gallium nitride 112, covering the P-type GaN 114 on the quantum well light-emitting layer 113 , N-contact layer 115 partially covering the N-type GaN 112 , and P-contact layer 116 covering the P-type GaN 114 . The substrate 111 can be a sapphire subst...
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