High-grey matte SMD (Surface Mount Device) LED (Light Emitting Diode) and glue dispensing technology thereof

A dispensing process, high-ash technology, applied in electrical components, circuits, semiconductor devices, etc., can solve the problem of incomplete contrast of SMDLED, and achieve the effect of high yield, high precision, and easy process control.

Active Publication Date: 2015-04-08
ZHEJIANG INTELED OPTOELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Traditional SMD LEDs mainly achieve the high contrast requirements of SMD LEDs by using black materials on the surface, sides and internal PPA of the reflector cup or only silk-screeni

Method used

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  • High-grey matte SMD (Surface Mount Device) LED (Light Emitting Diode) and glue dispensing technology thereof

Examples

Experimental program
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Embodiment

[0021] Embodiment: a kind of high gray matte SMD LED of the present embodiment, as figure 1 As shown, it includes a bracket 1, the upper surface of the bracket 1 is provided with a concave bowl-shaped groove 2, the bottom of the bowl-shaped groove 2 is provided with an SMD LED chip 3, and the bowl-shaped groove 2 is provided with low-reflective glue Layer 4, the low-reflection colloid layer 4 is composed of encapsulating glue, dark paint and coating additives, the encapsulating glue is transparent encapsulating glue or white encapsulating glue, and the coating aids include matting powder with a particle size of 1-20 μm and a particle -20nm matting powder, dark paint including gray paint, black paint, dark blue paint or carbon black.

[0022] The SMD LED chip 3 is connected to the positive and negative poles of the bracket 1 through metal leads. Add a certain proportion of dark paint, matting powder with a particle size of 1-20 microns and matting powder with a particle size o...

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Abstract

The invention discloses a high-grey matte SMD (Surface Mount Device) LED (Light Emitting Diode) and a glue dispensing technology thereof. The SMD LED comprises a bracket, wherein a concave bowl-shaped groove is formed in the upper surface of the bracket; an SMD LED chip is arranged at the bottom of the bowl-shaped groove; a low-reflection colloid layer is arranged in the bowl-shaped groove, and consists of packaging glue, a dark coating and a coating assistant; the packaging glue is transparent or white packaging glue; and the coating assistant comprises delustering powder with the particle size of 1-20 micrometers and delustering powder with the particle size of 1-20 nanometers. According to the invention, reflection of the SMD LED can be reduced, so that grey and contrast levels are raised.

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to a high-gray matt SMD LED and a dispensing process thereof. Background technique [0002] Traditional SMD LEDs mainly achieve the high contrast requirements of SMD LEDs by using black materials on the surface, sides and internal PPA of the reflector cup or only silk-screening black ink on the surface of the brackets. However, since the packaging glue of SMD LEDs is transparent or White, so the above two ways to improve the contrast of SMD LEDs are not thorough. Contents of the invention [0003] The purpose of the present invention is to overcome the existing SMD LED has larger reflection, has influenced the technical problem of SMD LED contrast, provides a kind of high-gray matt SMD LED and dispensing technology thereof, and it can reduce the reflection of SMD LED, thereby Improved grayscale and contrast of SMD LEDs. [0004] In order to solve the above problems, the present inv...

Claims

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Application Information

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IPC IPC(8): H01L33/48H01L33/60H01L33/00
CPCH01L33/005H01L33/48H01L33/486H01L33/56H01L2933/005
Inventor 林成通张盛
Owner ZHEJIANG INTELED OPTOELECTRONICS TECH
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