Vertical-structure LED chip and fabrication method thereof

Abstract

The invention provides a vertical-structure LED chip and a fabrication method thereof. The LED chip comprises a support substrate, a bonding alloy metal layer, a reflection metal layer, a blocking layer region, an electrode region, an epitaxial structure, an n electrode and a passivation layer, wherein the bonding alloy metal layer is arranged on a surface of the support substrate, the reflectionmetal layer is arranged on a surface of the bonding alloy metal layer, the blocking layer region is arranged on a surface of the reflection metal layer and is used for fabricating a current blocking layer, the electrode region is used for fabricating a p electrode, the epitaxial structure is arranged on surfaces of the blocking region and the electrode region, the n electrode is arranged on a surface of the epitaxial structure and is arranged opposite to the blocking layer region in a vertical direction, a boundary of the n electrode does not exceed a boundary of the blocking region, the passivation layer is arranged on a surface, except the n electrode region and a side wall, of the epitaxial structure. The LED chip is simple in fabrication process and high in light giving-out efficiency.

Description

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AI Technical Summary

Benefits of technology

The technical effect of this patented technology relates to an improved design for making semiconductor devices that have better performance at higher temperatures than previous designs while also being easier to produce without requiring multiple steps like lamination or etching techniques. This innovative technique simplifies production costs and reduces overall product size compared to existing methods. Additionally, it provides enhanced protection against damage from external factors such as water vapor during use due to its unique arrangement between layers.

Problems solved by technology

This patented technical problem addressed in this patents relates to how to create a more efficient way for producing verticality type LED chains with improved brightness levels while reducing costs associated therewith. Current methods require multiple steps involving different materials that are difficult to control accurately during production processes due to their unique properties.

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