Flexible LED (light-emitting diode) light-emitting structure based on graphene material and manufacturing method thereof

Abstract

The invention provides a flexible LED (light-emitting diode) light-emitting structure based on graphene material. The flexible LED (light-emitting diode) light-emitting structure based on the graphenematerial is characterized in that the flexible LED light-emitting structure comprises a copper tape substrate, a graphene film arranged on one side of the copper tape substrate, and a circuit layer disposed on the other side of the copper tape substrate; a plurality of LED light sources are attached to the circuit layer; due to the excellent thermal and thermal radiation properties of the graphene film, thermal conductivity becomes easy; the flexible LED light structure of the whole being light and thin can be used directly and achieve a certain degree of free bending with no metal radiatorsneeded to be attached; thus, directly through the heat sink of the LED light sources, all the heat is directly transferred to the copper tape substrate provided with the graphene film, and the graphene film on one side of the copper tape substrate can quickly dissipate the heat generated by the LED light sources. The flexible LED light-emitting structure has the advantage of having good heat dissipation effect. Further provided is a manufacturing method of the flexible LED light-emitting structure based on the graphene material.

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to a graphene-based flexible LED light-emitting structure and a manufacturing method. Background technique [0002] A light-emitting diode (Lighting Emitting Diode, referred to as LED) filament is a plurality of LED chips fixed in series on a glass substrate, and then molded and packaged to complete. LED filament lamps can be used to produce LED bulb lamps that are similar in shape to incandescent lamps, that is, LED filament lamps. LED filament lamps can achieve 360-degree full-circle lighting. LED filament lamp has a shape and light distribution curve similar to incandescent lamps, and is the most ideal light source to replace incandescent lamps in the true sense. [0003] Existing LEDs emit light by utilizing the spontaneous radiative recombination of carriers injected into the active region. LED has the advantages of safety and reliability, energy saving and environmental protect...

AI Technical Summary

Problems solved by technology

[0005] Due to the poor heat dissipation ability of the LED filament in the existing LED lamp, the wattage of the LED lamp is very small

No matter how small the wattage of the LED light is, the heat that cannot be dissipated will accumulate on the LED filament for a long time, which will cause the colloid on the LED chip to expand, stretch the welding gold wire of the LED chip, and cause the gold wire to break, and the LED chip to break. The electricity is not bright, which causes the problem of LED lights dead

[0006] Moreover, the existing LED filaments are provided with LED chips at equal intervals on the substrate. Since the heat emitted by each LED chip is constant, the heat between each LED chip is superimposed, and the thermal field distribution of the LED filament is in the middle. The height gradually decreases to both ends, that is, the heat distribution is very uneven, and it is basically concentrated in the middle of the substrate

The high heat in the middle of the substrate during use may easily cause the LED chip in the middle to have a large degree of light attenuation, or even fail, and the colloid in the middle to turn yellow. In addition, the higher the temperature, the greater the internal stress, which will lead to high temperature. The metal wire is easy to break, etc.

Similarly, the thermal field distribution of the entire substrate is uneven, which will lead to different attenuation degrees of LED chips in different positions, and different aging degrees of colloids in different positions, resulting in color drift, inconsistent brightness, color, etc. of the product, and even lead to poor electrical properties of the product. and failure

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