Chip scale integration packaging process and light emitting diode (LED) device

Abstract

The invention discloses a chip scale integration packaging process and a light emitting diode (LED) device. The packaging process sequentially comprises the following steps of: processing a surface plate substrate, fixing LED chips, coating phosphor glue to form box dam shapes, coating transparent glue to form grating plate shapes, curing the phosphor glue and the transparent glue to form box dams and grating plates, dispensing the phosphor glue in the box dam and drying the phosphor glue. The LED device comprises the surface plate bracket, wherein the surface plate bracket is divided into a central area and more than two peripheral areas outside the central area; the LED chips are fixed in the central and peripheral areas; the phosphor glue box dams are arranged on the surface plate bracket outside the peripheral areas; the grating plates formed by the transparent glue are arranged between the central and peripheral areas and between every two adjacent peripheral areas; and the phosphor glue is packaged in each area. The LED device molded by the packaging process has low optical energy loss, and emits light with uniform light color and high color rendering.

Description

Technical field [0001] The present invention relates to white light LED packaging technology, in particular to white light LED chip-level integrated packaging technology and LED devices applying the technology. Background technique [0002] LED has a series of advantages such as high luminous efficiency, energy saving and environmental protection, long life, small size and stable performance. It has an extremely broad development prospect and is regarded as the most valuable light source in the 21st century. There are many ways to achieve white light for LEDs, among which the most common, most efficient, and lowest-cost method is to use blue or ultraviolet light to excite phosphors and mix them into white light. In the existing packaging process, the main use is to mix phosphors and glue. , Spread on the surface of the chip until the phosphor reaches a certain height of the reflector cup. In the current process, there are mainly two methods to control the shape and amount of pho...

AI Technical Summary

Problems solved by technology

However, using this method of dam control phosphor coating, because the dam itself has a certain absorption effect on the light emitted by the chip, especially the side-emitting chip, especially when the thickness of the dam is too large, the effect of light absorption is very strong. , will greatly reduce the light efficiency of the entire device, and even the problem of uneven light color

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