affect the LED LED Lighting china

 The difference in coefficient of thermal conductivity of the sapphire substrate, affect the LED   LED Lighting china luminous efficiency. To solve the LED heat problem, the future may be mainly vertical structure LED structure, promoting technological development of LED industry. About the vertical structure of the LED technology I believe we all have heard, are introduced below the surface only from the technology, for information. Ceiling Light

We know, LED chip has two basic structures, horizontal structure (Lateral) and a vertical structure (Vertical). Horizontal structure of the two electrodes of the LED chip on the same side of the LED chip, the current in the n-and p-type cladding layer in the lateral flow unequal distances. The vertical structure of the LED chips of the two electrodes on both sides of the LED epitaxial layer, and the patterned electrodes of all p-type cladding layer as the second electrode, so that almost  LED Down lights all of the current flowing through the LED epitaxial layer vertical, horizontal flow rarely The current planar structure can improve the current distribution problems and improve the luminous efficiency, but also can solve the problem of the P electrode of the light-shielding, to enhance the LED light emitting area.