High-luminous efficiency, high stability, micro-nano-encapsulated fluorescent powder based on quantum dots for quantum dot-optimized white light-emitting diodes, generally used to adjust the color rendering index of white light diodes, and red/green for display A blue tri-color LED device that enhances the color gamut of the display.

High-luminance efficiency, high stability, micro-nano-encapsulated fluorescent powder based on quantum dots is used for quantum dot-optimized white light-emitting diodes, generally used to adjust the color rendering index of white light diodes, and red for display. / Green/Blue tri-color LED device for increasing the color gamut of the display.

US Patent No. 9,577,127 B1 discloses a quantum dot fluorescent microsphere structure. Based on the product, an LED application module using quantum dot fluorescent microspheres is simultaneously developed, including a backlight display module and an edge light display module. Group, ordinary patch lighting module, high power lighting module.

The LED module is obtained by a process such as patching, and is integrated into the backlight module to obtain a display module. The display module has two types: backlight and metering:

The quantum dot fluorescent microsphere LED backlight display module comprises a liquid crystal module, a uniform light module and a backlight module. As shown in FIG. 1 , the red-emitting quantum dot fluorescent microspheres 1 and the green-emitting quantum dot fluorescent microspheres 2 are mixed with the silica gel 3, rapidly and evenly stirred, and vacuum-deaerated, directly coated on the blue chip 4 , get white LED (5). As shown in FIG. 2, the LED (1) is obtained by patching a white light strip, and integrated to obtain a backlight module 2. The backlight module 2, the liquid crystal module 3, and the uniform light module 4 together constitute an LED backlight module.

Figure 1 Schematic diagram of the chip LED structure

Figure 2 Schematic diagram of LED backlight module

The quantum dot fluorescent microsphere LED side light module comprises a liquid crystal module, a polarizing module, a light homogenizing module, a light guiding module, a backlight module and a reflective layer. The red-emitting and green-emitting quantum dot fluorescent microspheres are mixed with silica gel and directly coated on the blue chip to obtain a white LED. As shown in FIG. 3, the LED (1) is obtained by patching a white light strip, and integrated to obtain a backlight module 2. The backlight module 2, the liquid crystal module 3, the polarizing module 4, the light homogenizing module 5, the light guiding module 6, and the light reflecting layer 7 constitute an LED side optical module.

Figure 3 Schematic diagram of the LED side light module

There are two kinds of white LEDs for illumination. One is a SMD LED module for illumination, including a blue chip, a yellow phosphor, a red-emitting quantum dot composite fluorescent particle, a silica gel, a substrate, and the other is used for illumination. High-power LED modules, including blue chip, yellow phosphor, red-emitting quantum dot composite fluorescent particles, silica gel, substrate, gold wire, PC lens, pin, etc.

Ordinary patch-type lighting module, as shown in Figure 4, is to mix red-emitting quantum dot fluorescent microspheres 1, yellow phosphor 2 and silica gel 3, quickly and evenly stir, vacuum defoaming, the mixture is passed through the dispensing On the patch LED of the blue chip 4, after curing, a white LED (5) is obtained. The blue light emitted by the blue chip, the yellow light of the phosphor and the red light of the fluorescent microsphere are mixed to obtain a red light-optimized white LED with a color rendering index Ra of 95 or more, R9 of 95, and a light effect of 20 mA to 120. Lm/W or more.

Figure 4 Schematic diagram of a common SMD LED structure

The high-power illumination module mixes the red-emitting quantum dot fluorescent microspheres, the yellow phosphor and the silica gel, and rapidly and evenly stirs. After vacuum defoaming, the mixture is dispensed onto the patch LED of the high-power blue chip 4, After curing, a white LED is obtained, and the lead and the gold wire are mounted, and the polycarbonate lens is covered, and after filling the filled silica gel, a white LED with high power type, high luminous efficiency and high color rendering index is obtained. The LED has a color rendering index R8 of 95 or more, R9 of 95 or more, and a luminous efficacy of 150 lm/W or more at a current of 20 mA.