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The chain of LED industry

The LED industry chain from upstream to downstream industries gradually reduce barriers to entry.

Upstream is single chip and its denotation, middle stream is   the LED chip processing,

downstream is the encapsulation testing and application. Among them, the upstream and

middle have higher technical content, and have bigger capital investment density, so it

have the greatest risk for international competition, In the LED industry chain, LED

epitaxial wafer and chip, equal 70% of industry profits, LED encapsulation accounted for

about 10-20%, and the LED application probably accounts for 10 to 20%.

 

 

The middle stream is mainly chip design and processing.according to the performance

requirements ,middle manufacturers make the LED device structure and process design,

through epitaxial wafer diffusion, and the metal coating, then lithography, heat treatment

and forming metal electrodes, and then will be cut by substrate wear thin after polishing.

Downstream including LED chips encapsulation testing and application. LED encapsulation

is means the outer lead electrode connected to the LED chips, the formation of LED components,

packaging plays a protectional roles in LED chip and enhance the role of light extraction efficiency.

LED packaging technology from semiconductor discrete device packaging technology on the basis

of development. The encapsulation type LED products mainly include: Lamp, insert type (ThroughHole),

surface mount (SMD), direct bonding type (DirectBonding), etc. The volume is smaller than other

conventional leds,so SMD type is mainly used for mobile phone screen back light and mobile phone keys,

are greatly influenced by phone demand.

  Lina  Liu     Sales

​​​​​​Shanghai Harse Electromechanical Technic Co., Ltd.

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