Blue light preventing packaging LED and backlight module thereof

Abstract

The invention discloses a blue light preventing packaging LED and a backlight module thereof. The blue light preventing packaging LED includes at least one LED blue light chip. The LED blue light chipis covered with a fluorescence converting layer including a white light converting fluorescent powder and thermosetting gel. The fluorescence converting layer also includes a fluorescence convertingmaterial capable of absorbing blue light whose peak wavelength within a wave band range of 435 to 475 nm so as to make red shift of the peak wavelength of blue light. The backlight module is therein provided with the blue light preventing packaging LED. The invention aims to reduce damage of blue light as well as to keep prior packaging color dots and luminance for the LED and the backlight moduleprovided with the LED.

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to an anti-blue light packaged LED light-emitting device and a backlight module thereof. Background technique [0002] Anti-blue light has become a new hot spot in the LED field, and the market demand for anti-blue light products is also increasing. Traditional blue light exists in large quantities in the light emitted by computer monitors, fluorescent lamps, mobile phones, digital products, display screens, LEDs, etc. Blue light within this wavelength will increase the amount of toxins in the macular area of ​​the eye, seriously threatening human eye health. Harmful blue light between 400nm-450nm has the highest energy and is the most harmful to human eyes. [0003] At present, LED anti-blue light technology is mainly divided into two types: one method is the module structure, adding materials for filtering specific wavelengths in the module structure, so that it can filter specific ...

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Problems solved by technology

[0003] At present, LED anti-blue light technology is mainly divided into two types: one method is the module structure, adding materials for filtering specific wavelengths in the module structure to filter specific blue light wavelengths, which can effectively reduce harmful blue light energy, but reduce blue light The energy will change the RGB ratio of the module, resulting in a change in the color point of the module; another method is to use a blue light chip with a long wavelength when packaging the LED, and stagger the 435nm part that is most harmful to the human eye, effectively reducing the short-wave blue light part, but using Long-wave chips will reduce the brightness of LED packages

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