Many engineers have developed white LED, LED packages are epoxide resins generally penetrable. But white LEDs also produce some UV light from the blue LED assembly itself. A generally penetrable epoxy resin will discolor due to UV light from the blue LED assembly. And it is difficult to save white after packaging for a long time, and usually the packaging method is used in the casting modeling method. This method cannot produce high-density, light-weight implants. In the first place, this paper developed a particularly penetrable epoxide resin that preserves white LEDs through the epoxide chemical structure.
This article can give very good results after the moisture simulation (600C/850/0300hrs/2OmA). The generally penetrable epoxide resin causes discoloration after the simulated conditions. Secondly, this paper was developed using high-density packaging technology using VPESTM (Vacuum Printing Process System). Good advantages are very fine spacing and low height, high density packaging technology, good mass production, and low cost systems. This article has succeeded in the use of high-order, penetrable epoxide resins and VPESTM technology for very high density and high reliability white LED packages.
The white LEDs in this paper can be used as light to replace the generation of fluorescent lamps and traffic signals. At the same time, this white light is very environmentally friendly for the real world. LEDs have excellent characteristics such as high speed results, low electronic power consumption, non-permanent long life, small size and high density. As far as is known, it has recently been used in a variety of different applications. In particular, it is also known for the full-color LED display in 1993 to introduce blue LED components in the market. For many years, research on white LEDs has also been launched, so there are many companies, and the research team of the university is actively engaged in the development of white LEDs. Typically, white LEDs are considered to be the source of illumination for blue LED components. It is concealed by a blue LED component having a yellow color epoxide composite resin, which is a mixture of Y/(yttrium aluminum garnet) in an epoxide resin and a mixed component Y of an inorganic fluorescent substance. White can be obtained by mixing the blue light from the blue LED component and the yellow light emitted by the YGA phosphor.
Recently, white LEDs have been used for rapid growth, such as backlighting of fine-film LCD panels, good automobiles, and generation of illumination light. Moreover, white LEDs are also an important component for environmental protection because they do not have any mercury that is wasted as fluorescent lamps. In any case, the epoxide resin is necessary to discolor the compressed LED component via UV light, and heat is sent out by the blue LED assembly. Therefore, the poor LED brightness also rapidly grows, and this deterioration is a big problem.
The clean epoxy resin developed has been discussed herein for improved UV-resistance characteristics and thermal resistance problems. Even, this VPESTM (Vacuum Printing Process System) is used to compress this modified penetrable epoxide resin as shown in FIG. Therefore, this paper successfully implements a unique white LED package, which is packaged in a high-density, miniaturized package. The detailed processing is described below.
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