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led device

A technology of LED devices and LED chips, which is applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve the problems of not being able to improve the consistency of light and color in the barrier performance, and achieve the consistency of light and color, compact structure, and good air tightness Effect

Active Publication Date: 2019-11-12
GUANGZHOU HUMAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is: aiming at the technical problem that the existing LED devices cannot ensure the consistency of light color while improving the barrier performance, an LED device which can improve the barrier performance and have stable light color consistency is now provided

Method used

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Embodiment 1

[0058] Such as figure 1 As shown, this embodiment provides an LED device, including a bracket 1, the bracket 1 is provided with an inverted trapezoidal groove 4, the surface of the groove 4 is provided with a silver-plated layer, the bottom of the groove 4 is provided with a bipolar chip, and the groove 4 is provided with a bipolar chip. 4. The inside is filled with an encapsulating adhesive layer 3 covering the bipolar chip, and the encapsulating adhesive layer 3 is organic silica gel mixed with yellow fluorescent powder. The surface of the encapsulation adhesive layer 3 is provided with an isolation layer 5, the isolation layer 5 is a polymer, and its molecular formula is ((CH 3 ) 3 SiO 1 / 2 ) a (PhSiO 3 / 2 ) b (Ph 2 SiO 2 / 2 ) c (SiO 2 ) d , where a:b:c:d=5:12:15:78.

[0059] The synthesis method of this polymer is as follows: 23.8g of phenyltrimethoxysilane is added into a flask, 60g of deionized water and 60g of concentrated hydrochloric acid with a mass percentag...

Embodiment 2

[0062] The difference between this embodiment and Embodiment 1 is that the isolation layer 5 is a polymer, and its molecular formula is ((CH 3 ) 3 SiO 1 / 2 ) a (PhSiO 3 / 2 ) b (Ph 2 SiO 2 / 2 ) c (SiO 2 ) d , where a:b:c:d=6:14:18:45.

[0063] The synthesis method of this polymer is as follows: 27.8g of phenyltrimethoxysilane is added into a flask, 60g of deionized water and 55g of concentrated hydrochloric acid with a mass percentage of 37% are added successively, and 44.3g of diphenyldimethoxysilane and normal Ethyl silicate 93.7g, after reflux at 70°C for 60min, add 9.7g of hexamethyldisiloxane and continue reflux for 60min, after reflux, pour the solution in the flask into a separatory funnel, separate the acidic water layer, and separate the organic layer Wash with water until the pH is neutral, pour the organic layer into a flask, add 5 g of deionized water, and reflux at 70°C for 60 minutes, distill and concentrate under reduced pressure with a vacuum water pump, ...

Embodiment 3

[0065]The difference between this embodiment and Embodiment 1 is that the isolation layer 5 is a polymer, and its molecular formula is ((CH 3 ) 3 SiO 1 / 2 ) a (PhSiO 3 / 2 ) b (Ph 2 SiO 2 / 2 ) c (SiO 2 ) d , where a:b:c:d=0.5:1:0.5:98.

[0066] The synthesis method of this polymer is as follows: add 0.8g of hexamethyldisiloxane, 2.0g of phenyltrimethoxysilane, 1.2g of diphenyldimethoxysilane and 204.1g of ethyl orthosilicate into the flask, Add 60 g of deionized water and 60 g of concentrated hydrochloric acid with a mass percentage of 37%, and reflux for 60 min. After reflux, the solution in the flask is poured into a separating funnel, and the acidic water layer is removed, and the organic layer is washed until the pH is neutral. Pour the organic layer into a flask, add 5 g of deionized water, and reflux at 70° C. for 60 minutes. Then, vacuum distillation and concentration with a vacuum pump reduce pressure, and remove the solvent and low-boiling point substances under...

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Abstract

The invention relates to the lighting field, in particular to an LED device. Aiming at improving the gas barrier performance of the existing LED device while ensuring its light and color performance during long-term use, an LED device is provided, including a bracket, the bracket is provided with a groove, and a light reflection layer is provided on the surface of the groove , the bottom of the groove is provided with an LED chip, the inside of the groove is filled with an encapsulation layer covering the LED chip, the surface of the encapsulation layer is provided with an isolation layer, and the isolation layer is used to block the penetration of external air The encapsulation adhesive layer corrodes the light-reflective silver-plated layer, and the isolation layer includes a polymer, and the molecular formula of the polymer is (R 3 SiO 1 / 2 ) a (RSiO 3 / 2 ) b (R 2 SiO 2 / 2 ) c (M f N g ) d (XO 1 / 2 ) e . The structure of the isolation layer is tight and the air tightness is relatively good, which improves the barrier performance of the LED device; the polymer makes the color coordinate change of the LED device <0.002 after the thermal shock test at -40°C and 125°C, ensuring the LED device. Light color consistency.

Description

technical field [0001] The invention belongs to the field of lighting, and in particular relates to an LED device. Background technique [0002] The basic structure of the LED is an electroluminescent semiconductor material chip, which is fixed to the bracket with a solid crystal glue, and then connected to the chip and the circuit board with a silver wire or a gold wire, and then sealed with epoxy resin or silica gel around it to protect the inside. The role of the structure, and finally the housing is installed. [0003] At present, the functional area at the bottom of the LED bracket is basically a silver-plated layer. Since sulfides, oxygen, etc. can easily pass through the encapsulation layer and react with the silver-plated layer in the functional area, a black silver compound is produced, which causes the LED device to appear light. decline phenomenon. [0004] In addition, as a light-emitting device, LED will directly affect people's visual experience, and the cons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/56
Inventor 郑海庭唐渝黄光燕王铃玉
Owner GUANGZHOU HUMAN CHEM