The invention discloses a preparation method of an LED
light source and a preparation method of an LED light-emitting module. The preparation method of the LED
light source comprises the following steps: bonding an LED
chip on a PET film or a PTFE film with UV
adhesive on the surface, and carrying out
ultraviolet irradiation for initial curing; preparing an insulation rubber layer on the LED
chip; then preparing a fluorescent
colloid layer; using UV light to irradiate the PET film or the PTFE film to enable the UV
adhesive on the surface to lose viscidity, and taking down the LED
chip after encapsulation to obtain the LED
light source. The LED light sources are arranged in a series-parallel connection mode, and are welded on a base plate, so that the LED light-emitting module is obtained. According to the preparation methods, in the aspect of material composition, supports and money are saved, the reliability is improved while the cost is reduced, the material cost can be reduced, the light-emitting angle is increased, the
processing convenience is increased, and the production link is simplified. The position of fluorescent
powder is far away from the chip through the insulation rubber layer, so that the
thermal quenching and
thermal efficiency of the fluorescent
powder are reduced, and the lighting effect and long-term
lumen maintenance are improved.