Light emitting diode, backlight module and preparation method of light emitting diode

Abstract

The invention discloses a light emitting diode. The light emitting diode comprises a chip layer, a fluorescent layer and a reflection cover layer. The fluorescent layer comprises a base face, a top face and a side face, wherein the base face is opposite to the top face and the side face connects the top face and the base face. The chip layer is adhered to the base face. The reflection cover layer is connected to the top face and comprises a reflection face facing the chip layer. Reflection protrusions are arranged on the reflection face. Light given out by the chip layer penetrates through the fluorescent layer, is reflected by the surfaces of the reflection protrusions and then is emitted out from the side face. The invention also discloses a backlight module and a preparation method of the light emitting diode. According to the invention, the light emitting efficiency of the light emitting diode is improved; power consumption of the light emitting diode is reduced; under the premise of providing the same backlight source brightness, the quantity of the light emitting diodes which are to be arranged on the backlight module is reduced; and product cost of the backlight module and a display device is reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a light emitting diode, a backlight module and a preparation method of the light emitting diode. Background technique [0002] Liquid Crystal Display (LCD) has an irreplaceable position in modern display devices, and it is widely used in display devices of portable mobile electronic products, such as mobile phones, digital cameras, handheld computers, GPRS and other mobile products. The liquid crystal display is generally provided by a backlight module to illuminate the liquid crystal display panel to display images. The light source of the direct type backlight module is provided by light emitting diodes (Light Emitting Diodes, LEDs) arranged on the light board. Current LEDs include four-sided LED flip-chips, that is, except for the bottom and top surfaces used for welding, all four sides can emit light. Compared with single-sided LED flip chips that only emit light on the top ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a light-emitting diode, a backlight module, and a method for preparing a light-emitting diode, so as to solve the problem of low light extraction efficiency of LEDs in the prior art, high power consumption of LEDs, and problems in backlight modules and display devices. The problem of high product cost

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