Quantum dot interlayer CSP backlight with luminescence of five surfaces and manufacturing method thereof

Abstract

The present invention provides a five-sided light-emitting quantum dot interlayer CSP backlight, including a light-emitting flip chip, and an inner transparent glue layer wrapped around the upper end and the periphery of the flip chip, and the inner transparent glue layer is wrapped with quantum dots A glue layer, the quantum dot glue layer is wrapped with an outer transparent glue layer; the quantum dot glue layer is formed by curing the encapsulation glue dissolved with the quantum dot phosphor powder. The quantum dot glue layer of the CSP backlight provided by the invention has a low working temperature, which reduces the temperature decay of the quantum dot powder; when driven by the same current, the CSP adopts a high-power flip chip to generate lower heat than traditional lamp beads.

Description

technical field [0001] The invention relates to the field of backlight technology, in particular to a quantum dot interlayer CSP backlight source emitting light from five sides. Background technique [0002] CSP (Chip Scale Package) is called a chip-scale package. The most typical CSP is a five-sided light-emitting CSP, which is wrapped with fluorescent glue around the flip chip 1 and the top 2, and the four sides and the top are light-emitting, such as figure 1 shown. [0003] Compared with traditional packaged lamp beads, the number of brackets and substrates is reduced, effectively reducing costs. CSP has small size, light weight, good electrical and thermal performance, and improves the reliability of backlight. CSP adopts flip-chip, which avoids the abnormal wiring of traditional LEDs and the problem of easy-to-dead lamps. The five-sided CSP emits light on the top and around the chip, and the light output angle is large. [0004] Quantum Dot (Quantum Dot), also know...

AI Technical Summary

Problems solved by technology

However, because quantum dot powder is more sensitive to humidity and temperature, it may cause quantum dot powder performance attenuation.

Images