Anti-vulcanization LED lamp bead

Abstract

The invention discloses an anti-vulcanization LED lamp bead, which comprises a bracket, an LED accommodating cavity with an open top, and an LED chip, wherein the LED accommodating cavity is formed byenclosing an insulating material positioned at the top of the bracket and the top of the bracket together, the LED chip is positioned in the LED accommodating cavity, the top of the bracket is covered with a gold plating layer, the bottom of the LED accommodating cavity is divided into a fixed area and a light reflecting area, the bottom of the LED chip is fixed to the fixed area, and the light reflecting area is provided with a light reflecting layer. According to the invention, the vulcanization resistance of a product can be greatly improved, the reliability is high, and the service life of the product can be greatly prolonged; pits are respectively formed in the top and the bottom of the bracket, and even the side surface of the isolation gap can be an uneven curved surface, so that harmful gas and water vapor are more difficult to enter the chip from the contact surface of the bracket and the thermosetting plastic; and the LED accommodating cavity is filled with the modified silica gel, so that the molecular gap is small, the air tightness is good, and the vulcanization resistance is high.

Description

technical field [0001] The invention relates to the field of LEDs, in particular to an anti-vulcanization LED lamp bead. Background technique [0002] When it comes to LED failure, people will first think of the phenomenon that the dead light does not light up under normal current drive, or only emits weak light. In fact, this is the type of failure that has reached the most severe level and is called a catastrophic failure. On the contrary, if some key parameters of LED products deviate from acceptable limits during normal use, such as permanent light output attenuation, color temperature drift, color rendering index drop, etc., we call it parameter failure. Considering the bare crystal chip (i.e. epitaxial grain) alone, the failure rate of LED product parameters is very low, because it is a solid compound with very stable properties, and it is not easy to be damaged when used under standardized conditions, but it is in general application. The environment is also resista...

AI Technical Summary

Problems solved by technology

What's more, the organic gas barrier layer 3 is easily worn out in the later processing when it is coated on the surface of the LED lamp bead

At the same time, organic gas-barrier materials are prone to degradation, molecular fission and cracking in high-temperature environments for a long time, and ultimately cannot provide effective protection.

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