TEC Common Cathode Technology in NPP video wall screen

TEC Common Cathode Technology has revolutionized the NPP LED display market with high refresh rate IC driver, such as 1.2mm, 0.9mm small pitch LED video wall.

The LED device has two terminals, an anode and a cathode, and each pixel consists of three LEDs (red, green and blue), requiring a total of 6 terminals.

In traditional Common Anode LED panel designs, the terminals of all 3 (red, green & blue) LEDs are wired together and an external ballast resistor is added in series with the red LED to maintain a constant voltage and equalize the voltage drop across all three LEDs. This subsequently reduces available space for the LEDs making fine pixel pitch harder to achieve, while it is also an additional heat source and accelerates the aging process and reduces the lifetime.

In Common Cathode technology, separate, dedicated power supply voltages are supplied to the red, green and blue LEDs enabling the power supplied to the red LED to be controlled separately and eliminating the requirement for a ballast resistor.

This technology dramatically reduce the power dissipation of the LED display system and create very efficient power consumption across the range. Here the advantages below:

1, Saving 30% power consumption.

2, 25% colder than normal LED screen.

3, 30% longer LED life span.

4, No fan, no noise.

5, Perfect video performance.