Light-emitting diode (LED) device and manufacturing method thereof
A technology of LED device and manufacturing method, which is applied to semiconductor devices, semiconductor devices of light-emitting elements, reflectors, etc., can solve the problems of uneven light emission, small light angle, glare, etc., and achieves the elimination of glare and aperture phenomenon, and the increase of light angle. Large, luminous efficiency improvement effect
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Embodiment 1
[0062] Provide an aluminum substrate with a size of 5.5cm×5.5cm, and then form a 0.5mm thick Al substrate on the substrate 2 o 3 Reflective layer. Then, a blue chip with a size of 3.5×2.8 mm was fixed at the center of the substrate with silica gel.
[0063] Add 1.00g of yellow luminescent powder (XLLY-01A, Sichuan Xinli Light Source Co., Ltd.), 1.00g of glass beads with a central particle diameter of 15μm, and 10g of resin (Bayer 6265 PC material) into a beaker, and stir for 30 minute. The uniformly stirred mixture was subjected to an injection molding process to form a curved lens with a radius of curvature of 6 cm and a weight of 11 g.
[0064] The resulting lens was placed on a substrate on which a chip (emission peak at 460 nm) was arranged. If the lens is a flat lens, the distance between the inner side of the lens and the chip on the substrate is 0.1-200mm; if the lens is a curved lens, this distance refers to the curvature of the inner side of the lens relative to t...
Embodiment 2
[0067] LED devices KS-3~KS-8 were produced in the same manner as in Example 1, except that glass beads were mixed in the amounts shown in Table 2 as light-diffusing particles, that is, the incorporation of light-diffusing particles The amount varied from 0.02g to 0.30g. The LED device KS-9 was fabricated on the basis of KS-5, except that the luminescent powder layer was covered on the reflective layer with the amount shown in Table 2. The color temperature, luminous efficacy, light output angle and uniformity of the prepared LED device were measured by the same method as in Example 1, and the measured results are shown in Table 2.
Embodiment 3
[0076] The LED devices FG-1~FG-7 were manufactured in the same manner as in Example 1, except that the amount shown in Table 3 (that is, increased from 0.02g to 0.14g) was mixed with a central particle size of 150nm Anatase TiO 2 As reflective particles, instead of light-diffusing particles glass beads. The color temperature, luminous efficacy, light output angle and uniformity of the prepared LED device were measured in the same manner as in Example 1, and the measured results are shown in Table 3.
[0077] Table three
[0078]
[0079] It can be seen from Table 3 that with the anatase TiO 2 The incorporation of the LED device can improve the light output angle, uniformity and light efficiency of the prepared LED device, and reduce the color temperature. When anatase TiO 2 When the doping amount increases from 0.002g (ie, 0.02% by weight relative to the lens) to 0.08g (ie, 0.8% by weight relative to the lens), the light efficiency, light output angle and uniformity of ...
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