Inverted LED chip for backlight display and manufacturing method thereof

Abstract

The invention discloses an inverted LED chip for backlight display and a manufacturing method of the inverted LED chip. The chip comprises a substrate, a light-emitting structure, a first reflecting layer and a scattering layer, the front face of the substrate comprises a light-emitting area and a reflecting area, the back face of the substrate is provided with the scattering area and a light-emitting area, the reflecting area is located on the periphery of the light-emitting area, the light-emitting area is located on the periphery of the scattering area, and the scattering area is located above the light-emitting area; the light-emitting structure is arranged in the light-emitting area, and the first reflecting layer is arranged in the reflecting area; the scattering layer is arranged inthe scattering area, the scattering layer comprises a SiO2 layer and an Al layer, and the SiO2 layer is arranged between the substrate and the Al layer; light emitted by the light-emitting structureto one side of the substrate is scattered and reflected by the scattering layer, and the light reflected by the scattering layer is reflected by the first reflecting layer to the light-emitting area of the substrate to be emitted, so that the light-emitting angle of the chip is increased.

Description

technical field [0001] The invention relates to the technical field of light-emitting diodes, in particular to a flip-chip LED chip for backlight display and a manufacturing method thereof. Background technique [0002] In the electronics industry, backlighting is a form of lighting that is often used on LCD displays. The difference between the backlight type and the front light type is that the backlight is illuminated from the side or the back, while the front light, as the name suggests, is illuminated from the front. They are used to increase illuminance in low-light environments and computer monitors, LCD screens, to generate light in a similar manner to CRT displays. [0003] The light source may be an incandescent bulb, an electro-optic panel (ELP), a light-emitting diode (LED), a cold-cathode tube (CCFL), and the like. Electro-optic panels provide uniform light across the surface, while other backlights use diffusers to provide uniform light from uneven light sourc...

AI Technical Summary

Problems solved by technology

[0004] The existing backlight LCD needs to use a diffuser plate, which contains a lot of granular objects, which can diffuse the light, thereby increasing the light output angle, but the use of a diffuser plate will increase the thickness of the display screen

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