08.22.17
Quantum Materials announced it has surpassed the 1000-hour continuous on-time durability test for the company’s cadmium-free quantum dots in a remote light emitting diode (LED) application. The testing has been conducted with red and green quantum dots encapsulated in resin and mounted to blue emitting LEDs, which are similar to the type of LEDs used in standard LCD display back light units (BLU).
The successful implementation of quantum dots with LEDs has been slow to progress primarily due to the challenge of achieving the requisite reliability and durability to survive the heat generation inside the LED package without suffering thermal quenching and rapid performance deterioration.
The QD-LEDs were under continuous power at 2.5 Volts DC at 70mA and were measured initially, incrementally and at the 1000-hour mark with no measurable degradation of intensity, peak emission or FWHM, which is the measure for color purity. The QD-LED packaged units will continue to be under power and measurements of key performance criteria taken through and beyond the 3000-hour test protocol.
“Passing the 1000-hour continuous on time milestone is a major achievement in proving our quantum dot and encapsulation technologies,” said Stephen Squires, Quantum Materials president and CEO. “They are the basis for the next generation of quantum dot solutions to improve the color rendering capability of flat panel displays, which is moving QDs from the front of the LCD panel to the actual surface of LEDs."
The successful implementation of quantum dots with LEDs has been slow to progress primarily due to the challenge of achieving the requisite reliability and durability to survive the heat generation inside the LED package without suffering thermal quenching and rapid performance deterioration.
The QD-LEDs were under continuous power at 2.5 Volts DC at 70mA and were measured initially, incrementally and at the 1000-hour mark with no measurable degradation of intensity, peak emission or FWHM, which is the measure for color purity. The QD-LED packaged units will continue to be under power and measurements of key performance criteria taken through and beyond the 3000-hour test protocol.
“Passing the 1000-hour continuous on time milestone is a major achievement in proving our quantum dot and encapsulation technologies,” said Stephen Squires, Quantum Materials president and CEO. “They are the basis for the next generation of quantum dot solutions to improve the color rendering capability of flat panel displays, which is moving QDs from the front of the LCD panel to the actual surface of LEDs."