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Novel LED lamp bead capable of preventing electromigration

A new technology of LED lamp bead, which is applied in the direction of circuits, electrical components, electric solid devices, etc., can solve the problems of lamp bead leakage, short circuit, etc., and achieve the effect of widening the distance, weakening the electric field strength, and preventing the migration of metal ions

Active Publication Date: 2020-06-26
吉安市木林森显示器件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of LED lamp bead that prevents electromigration, and solve the problem of lamp bead leakage or short circuit caused by the migration of metal ions between the metal functional areas inside the LED lamp bead bracket

Method used

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  • Novel LED lamp bead capable of preventing electromigration
  • Novel LED lamp bead capable of preventing electromigration
  • Novel LED lamp bead capable of preventing electromigration

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1: Please refer to the attached figure 1 to attach image 3 , This embodiment provides a new type of LED lamp bead that prevents electromigration.

[0027] Such as figure 1 As shown, this embodiment includes a lamp bead bracket 1, a metal functional area 3 arranged on the front of the lamp bead bracket 1 and connected to the power supply, and a blue lamp set independently on the front of the lamp bead bracket 1 and used to install and fix the blue light chip and the green light chip. Green solid crystal functional area 4, the metal functional area 3 includes a blue light second welding functional area 31, a green light second welding functional area 32, a red light electrode functional area 33 and a chip common polarity second welding functional area 34, the described The power supply connected to the blue light second welding functional area 31, the green light second welding functional area 32, and the red light electrode functional area 33 is the same el...

Embodiment 2

[0034] Embodiment two: please refer to the attached Figure 4 to attach Figure 7 , This embodiment provides a new type of LED lamp bead that prevents electromigration.

[0035] The difference between this embodiment and Embodiment 1 is that the metal functional area 3 and the blue-green crystal-bonding functional area 4 described in this embodiment are two groups, such as Figure 4 and Figure 5 As shown, since the two blue light secondary welding functional areas 31 are fixedly connected together and share a through hole 6, the two green light secondary welding functional areas 32 are fixedly connected together and share a through hole 6, which The number of corresponding pins is reduced from the original eight to six, which effectively saves the cost of the lamp bead patch at the application end; at the same time, in order to facilitate the control of the application end, the two blue light second soldering functional areas 31 on the front of the lamp bead bracket Throug...

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Abstract

The invention discloses a novel LED lamp bead capable of preventing electromigration. The LED lamp bead comprises a lamp bead bracket, a metal functional area communicated with a power supply and an independently arranged blue-green die bonding functional area, the metal functional areas comprise a blue lamp secondary welding functional area, a green lamp secondary welding functional area, a red lamp electrode functional area and a wafer common polarity secondary welding functional area; the power supplies connected with the blue lamp secondary welding functional area, the green lamp secondarywelding functional area and the red lamp electrode functional area are the same electrode; a power supply connected with the wafer common polarity secondary welding functional area is the other electric pole; a red solid crystal functional area is arranged on the red light electrode functional area; the blue lamp secondary welding functional area, the green lamp secondary welding functional area,the red lamp electrode functional area and the wafer common polarity secondary welding functional area are arranged around the blue-green die bonding functional area, and an insulation gap is arranged between the blue-green die bonding functional area and the blue-green die bonding functional area. Solder mask layers are arranged between the blue-green die bonding functional area and the surrounding blue lamp secondary welding functional area, and between the green lamp secondary welding functional area and the wafer common polarity secondary welding functional area, so that metal ion migration between the metal functional areas is effectively prevented.

Description

【Technical field】 [0001] The invention relates to the technical field of LED lighting, in particular to a novel LED lamp bead for preventing electromigration. 【Background technique】 [0002] As people's requirements for high-definition display screens are getting higher and higher, small-pitch display screen products are developing rapidly, and the pitches are getting smaller and smaller. However, there are generally quality problems such as electromigration in small-pitch products. The phenomenon of electromigration is mainly manifested in the migration of metal ions between the metal functional areas inside the LED lamp bead bracket. [0003] At present, in the existing LED lamp bead on the market, the crystal-bonding area of ​​the RGB chip on the bracket is usually a whole, and is connected to the bottom pin. When energized, any two metal functional areas with different electrical properties are equivalent to two electrodes of the electric field, and an electric field w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/62H01L25/075
CPCH01L25/0753H01L33/62
Inventor 刘勇华李秦豫胡丹
Owner 吉安市木林森显示器件有限公司
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