How flip chip technology can change the LED industry

The flip chip has a 10x point electrode size, metal surface soldering, stronger soldering force, lower thermal resistance, and rated operating voltage close to the theoretical value of 2.8 volts. At the same time, the sapphire surface emits light, and the external quantum efficiency is higher, allowing the phosphor to be sprayed. No need for gold wire, no bracket, allowing more than 2 times current injection.

The chip-on-chip has obvious advantages in lighting applications, with higher cost performance (lumen/yuan), higher reliability, greater illumination angle, higher luminous density, lower system cost, shorter manufacturing process and convenient scale. Production

The flip-chip COB module will be mainly used in high-power products, with higher reliability, thermal resistance and junction temperature 30% lower than the packaged chip.

It is worth mentioning that the production line of flip chip cob can be reduced by 50%. Because there is no gold wire, no bracket, the cost of bom is reduced by more than 20%, and the personnel can be reduced by 30%, which greatly increases the price/performance ratio.

Flip chip cob light source will become the main light source configuration of bulb, downlight, spotlight, mining lamp, etc.; lamp strip, fluorescent tube, flat panel light source is still the world of smd, smd is developing to smaller size; csp package Large-scale entry into backlights and flash applications; chip packaging costs are further reduced, high-voltage small currents simplify the heatsink, and linear ic simplifies power supplies; future light sources will focus on light quality and optimize spectral direction.

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