Light-reinforcing single-sided light emitting type CSP LED and processing method thereof

Abstract

The invention relates to a light-reinforcing single-sided light emitting type CSP LED and a processing method thereof, and relates to the technical field of LEDs. The light-reinforcing single-sided light emitting type CSP LED comprises a white wall adhesive, an LED chip and a packaging colloid, wherein the white wall adhesive is in the shape of a bowl cup with the bottom being hollowed out, the LED chip is arranged inside the white wall adhesive, an electrode surface at the bottom of the LED chip is flush with the bottom of the white wall adhesive, the periphery of the LED chip and the bowl cup of the white wall adhesive are filled with the packaging colloid. The extraction of white light is greatly improved, the light is more concentrated and uniform after diffuse reflection, the lens matching is more convenient in the field of backlight, and the practicability is higher.

Description

Technical field [0001] The present invention relates to the technical field of LEDs, in particular to a light-enhancing single-side light-emitting CSP LED and a processing method thereof. Background technique [0002] As a simple LED package product, CSP LED is widely used in lighting because of its advantages of no substrate, no bonding wire, small size, light thickness, high power load, and strong size design flexibility. , Backlight, automotive and other fields. [0003] The appearance of CSP LED has also developed different structures and morphological characteristics following the needs of the application. The original CSP developed from the traditional single-side light-emitting PLCC and QFN package form to the five-side light-emitting CSP. The five-sided luminous CSP product has high luminous efficiency and low light loss, and the near-field luminous angle is close to 180°, which is suitable for the lighting field. However, in the backlight field, it is difficult to design...

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Problems solved by technology

Pentaluminescent CSP products have high luminous efficiency, less light loss, and a near-field luminous angle close to 180°, which is suitable for the field of lighting; however, in the field of backlight, it is difficult to design a lens for five-sided CSP, and the blue leakage at the bottom of the five-sided CSP affects the backlight Effect

At present, single-sided light-emitting CSPs on the market mostly use white wall glue around the chip. Generally, the white wall glue is close to the chip or there is a certain distance between the white wall glue and the chip. In the two cases, the white wall glue is installed. The light output around the CSP will be blocked, and the light output efficiency of the front of the CSP will decrease

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