Japanese companies push new substrate: LED brightness upgrade 10%

TDK company developed ceramic substrate, not only can protect the LED, and its brightness increased by 10%.

The substrate is processed and manufactured in a semiconductor wafer, and has the same function as a varistor, which is used to prevent static electricity, but cannot be used in conjunction with LED.

This new substrate is no longer required zener diode (Zenerdiodes), zener diode is a commonly used in the separation of semiconductor devices to prevent static electricity. In this way, the time and cost for the installation of the zener diode can be saved, and the new substrate can absorb more light, so that the luminous efficiency is improved by about 10%.

ESD and component costs are the same as those used with zener diodes.

TDK plans to start mass production in fiscal 2009, and will provide a substrate for semiconductor packaging manufacturers.