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Light emergency interface of LED (light emitting diode) chip and preparation method thereof

A LED chip and interface technology, applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve problems such as the decrease of light output rate, achieve the effect of large reflection angle, multiple light output, and improve light output efficiency

Inactive Publication Date: 2011-11-16
宜兴环特光电科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is an ordinary type of LED or a white LED widely used in the lighting field, since the LED chip has an optical refractive index as high as 2 to 4, when it emits to a lower optical medium, it will have total reflection and Make it impossible to emit light incident at a certain critical angle, reducing the light output rate

Method used

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  • Light emergency interface of LED (light emitting diode) chip and preparation method thereof
  • Light emergency interface of LED (light emitting diode) chip and preparation method thereof
  • Light emergency interface of LED (light emitting diode) chip and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A light exit interface of an LED chip comprises a light-transmitting substrate arranged on the LED chip, and a light-transmitting film with a microconvex lens array structure is arranged on the outer surface of the light-transmitting substrate.

[0022] The specific preparation method is as follows:

[0023] In order to obtain a higher refractive index not less than 2, titanium oxide (T i o 2 ) or titania and zirconia (Z r o 2 ) mixed base.

[0024] Because the purpose of preparing the optical film of the present invention is only to minimize and avoid the loss of total reflection that may occur on the interface, without any other strict requirements, therefore, the method of electron beam evaporation can be adopted by relying on a special microporous screen plate, Depositing a special optical film with a suitable thickness on the surface of the LED chip that presents a surface similar to a convex lens array, without having to use the existing complicated micro-opti...

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PUM

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Abstract

The invention discloses a light emergency interface of an LED (light emitting diode) chip, which comprises a light transmitting matrix arranged on the LED chip and is characterized in that the outer surface of the light transmitting matrix is provided with a light transmitting film with a micro convex lens array structure. The invention also discloses a preparation method of the light emergency interface of the LED chip. In the invention, the matrix made of a high optical refractive index light-transmitting material is constructed on the LED chip and the optical film similar to a micro convex lens array is formed on the outer surface, so that the total reflection loss is furthest reduced and avoided and the emergency efficiency of the LED chip is effectively promoted.

Description

technical field [0001] The invention belongs to the technical field of LED lighting, and in particular relates to a light-emitting interface of an LED chip and a preparation method thereof. Background technique [0002] In the context of rising concerns about global energy shortages, energy conservation is an important issue that we must face at present and for a long time in the future. In the field of lighting, semiconductor lighting has attracted much attention due to its energy-saving, environmental protection, and high-end features. Due to the characteristics of high luminous efficiency, energy saving, and good color rendering effect, LED fluorescent lamps will be widely popularized in the world. Whether it is an ordinary type of LED or a white LED widely used in the lighting field, since the LED chip has an optical refractive index as high as 2 to 4, when it emits to a lower optical medium, it will have total reflection and The light that is incident at an angle grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/44H01L33/58
Inventor 张爱军张保民王庆宝张毅
Owner 宜兴环特光电科技有限公司
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