LED and its preparing process

Abstract

A light emitting diode and a method for making the same are proposed. The LED comprises an inorganic phosphor, a silicon compound and an organic glue. The silicon compound has one side being completely or partially C1-C6 alkyl oxide reacted with the inorganic phosphor to modify the surface property of the inorganic phosphor and another side being a functional group selected from a group consisting of epoxy, C1-C6 alkyl, phenyl, amino. The inorganic phosphor with modified surface property can be uniformly mixed in the glue and less deposition is produced.

Description

technical field [0001] The invention relates to a light-emitting diode and a manufacturing method thereof, in particular to a method for modifying the surface of an inorganic-type phosphor, which is easy to mix with an organic-type colloid, and is not easy to produce precipitation, so as to improve the stability and excellent performance of the manufacturing process. rate light-emitting diodes. Background technique [0002] According to Nichia Corporation of Japan, it uses a blue light-emitting diode (mainly made of indium gallium nitride) to excite a yellow inorganic phosphor. The inorganic phosphor is mainly made of yttrium aluminum garnet (Yttrium Aluminum Garnet; YAG). Light is mixed with blue light to produce white light. The luminous characteristics of this white light-emitting diode when the current is extremely low, such as below 20mA, its color temperature is 8000K, comparable to that of sunlight-colored fluorescent lamps, and its color reproduction is close to tha...

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Problems solved by technology

[0008] (1) Although the high-viscosity glue can slow down the precipitation of the phosphor, it is difficult to mix evenly between the glue and the phosphor due to the high viscosity, and it is easy to affect the stability of the process;

[0009] (2) In the dispensing process of high-viscosity glue, due to the high viscosity coefficient, it is difficult to accurately control the amount of glue, resulting in an unstable process and a decrease in the excellent rate

[0010] Therefore, it will seriously affect the effect and quality of its color mixing with blue light-emitting diodes

[0011] Therefore, it can be seen from the above that what kind of colloid is selected for use cannot effectively solve the problem, and there are many inconveniences and defects, which can be improved.

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