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Light emitting diode device

A light-emitting diode and fluorescent technology, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of light-emitting diode device light-emitting efficiency reduction, display light-emitting efficiency reduction, loss, etc.

Inactive Publication Date: 2014-01-29
WALSIN LIHWA
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Problems solved by technology

Scattered light is divided into forward scattered light and backward scattered light. The forward scattered light continues to the light-emitting surface of the LED device, while the back scattered light returns to the position of the light-emitting chip to form a light The energy is absorbed and lost by the light-emitting chip or the light-emitting diode device itself, which reduces the light extraction efficiency of the display
Second, when the angle between the light and the surface of the phosphor particles is smaller than the critical angle, the light will be totally reflected when it reaches the surface of the phosphor particles, and the totally reflected light will return to the position of the light-emitting chip, which will also cause the light energy to be lost The light-emitting chip or the light-emitting diode device itself absorbs and loses, which reduces the light extraction efficiency of the light-emitting diode device

Method used

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Embodiment Construction

[0031] The following embodiments propose a light emitting diode device, through which the difference between the refractive index of the encapsulating adhesive layer and the microparticles in the encapsulating adhesive layer is less than or equal to 0.05, so as to improve the light extraction efficiency of the light emitting diode device. However, the detailed structures provided in the embodiments are for illustration purposes only, and are not intended to limit the protection scope of the present invention. Those with ordinary knowledge can modify or change these detailed structural details according to actual implementation requirements.

[0032] Please refer to figure 1 , figure 1 A schematic diagram of an LED device according to the first embodiment of the present invention is shown. The LED device 100 includes a LED element 110 and an encapsulant layer 120 . The encapsulant layer 120 is disposed around the LED element 110 . In other words, the encapsulant layer 120 is ...

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Abstract

A light emitting diode device is provided. The light emitting diode device comprises a light emitting diode component and an encapsulation layer. The encapsulation layer is disposed surrounding the light emitting diode component. The encapsulation layer comprises an encapsulation gel layer and a plurality of micro-particles distributed in the encapsulation gel layer. The difference between the refractive index of the encapsulation gel layer and the refractive index of the micro-particles is smaller than or equal to 0.05.

Description

technical field [0001] The present invention relates to a light emitting diode device, and in particular to a light emitting diode device with good light extraction efficiency. Background technique [0002] With the development and progress of display technology, the research and development of various displays is progressing rapidly, and the requirements for their functions and characteristics are also increasing day by day. Among them, the application of phosphors in light-emitting diode displays has become one of the focus of display technology research. . [0003] Phosphor powder is often used in light-emitting diode devices for light conversion, mainly because the phosphor powder can absorb and convert the light emitted by the light-emitting chip of the light-emitting diode device into other light of different wavelengths. The light-emitting diode device can choose the appropriate type of phosphor powder according to the needs, and the light emitted by the phosphor pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50H01L33/48
CPCH01L33/507H01L2933/0091H01L33/501H01L33/56
Inventor 姜崇义廖经桓林川发
Owner WALSIN LIHWA
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