New concept-based phosphor with planting corner angle and penetration and diffusion layer and light-emitting device

Abstract

The invention relates to a new concept-based phosphor with a planting corner angle and a penetration and diffusion layer. The phosphor is characterized by comprising an inorganic compound phosphor, a corner angle planting agent and a penetration planting agent, wherein primary bonding of the corner angle planting agent and the surface of the inorganic compound phosphor is carried out to form the inorganic compound phosphor with the planting corner angle; and secondary bonding of the penetration planting agent and the surface of the inorganic compound phosphor with a corner angle shape is carried out to form the phosphor with the planting corner angle and the penetration and diffusion layer. The phosphor with the planting corner angle and the penetration and diffusion layer has excellent cold-to-hot state performance and good chemical stability and is suitable for various light-emitting devices. The preparation method provided by the invention is simple, convenient and reliable, and is suitable for industrialized mass production and manufacturing.

Description

technical field [0001] The invention belongs to the technical field of LED phosphors and light-emitting devices, and in particular relates to a phosphor and a light-emitting device based on a new concept that can be effectively excited by ultraviolet light, purple light or blue light. Background technique [0002] In the context of global energy shortage, LED lighting products have attracted much attention. With the rapid development of white LED technology, the replacement of traditional lighting sources and backlights is accelerating, and semiconductor lighting will be popularized rapidly. In the field of LED packaging, the stability and yield rate of finished LED lamp beads have attracted much attention, especially the color temperature stability of LED lamp beads during use, because the use of existing phosphors needs to be reconciled in LED packaging materials, while LED The thermal conductivity of the packaging material is much smaller than that of the phosphor, so the...

AI Technical Summary

Problems solved by technology

In the field of LED packaging, the stability and yield rate of finished LED lamp beads have attracted much attention, especially the color temperature stability of LED lamp beads during use, because the use of existing phosphors needs to be reconciled in LED packaging materials, and LED The thermal conductivity of the packaging material is much smaller than that of the phosphor, so the self-dissipation performance of the phosphor is very poor, which cannot meet the color temperature stability requirements after the package is lit. It often occurs that the color temperature of the finished LED bead rises or falls with the prolongation of the lighting time. The phenomenon of lowering has seriously hindered the popularization and use of white light LEDs.

Furthermore, most of the existing white light LEDs are encapsulated by mixing two or more types of phosphor powders. The particle size of the phosphor powders is inconsistent, which leads to inconsistent sedimentation rates in the packaging materials, which ultimately leads to poor light and color consistency of LED finished lamp beads.

How to overcome the problems of cold-hot color temperature drift and poor packaging light color consistency in the use of existing phosphors has become one of the major problems to be solved in the technical field of LED phosphors and light-emitting devices.

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