QUANTUM DOTS o colores de Puntos Cuánticos



Quantum Colours: una nueva generación de televisores LED 100% compatible con DCI.

Si bien la tecnología Quantum Dots todavía hoy está reservada principalmente para televisores de alta gama, Osram Opto Semiconductors anuncia Quantum-Colores, una nueva tecnología de conversión de color para reducir los costes de producción, sino también mejorar el rendimiento de la imagen en general.

Con un sistema de retroiluminación LED QD en general están monopolizadas por unas pocas empresas como QD Vision o Nanoco, Osram OS espera unirse a la fiesta con el anuncio de la tecnología de conversión de colores Quantum que ofrece en el papel, mientras que al menos, para ir más allá de eso ahora ofrecen sus competidores. A pesar de la combinación de la tecnología de puntos cuánticos con retroiluminación LED ahora por cerca de 3 años en determinados televisores (Sony, Samsung, TCL, etc...). Ninguno todavía es ahora capaz de alcanzar 100% de la gama de colores DCI-P3, y mucho menos la Rec.2020 que todavía es considerado por muchos profesionales como una leyenda urbana. El proceso Quantum Colours es proponer espacios de color más consistentes, Osram OS también anuncia que su tecnología será capaz de cubrir el 100% de la gama DCI y el 80% gama Rec.2020. Para ello, la empresa utiliza un convertidor cuántico verde combinado con un fósforo rojo y un chip azul. Todo esto sin el uso de cadmio, y con una vida anunciada al menos 30 000 horas después de la primera prueba.

Otra ventaja reside en los costes de fabricación. Para un modelo de TV UltraHD 4K de 55", el costo de la integración de Quantum colours se estima en alrededor de los 55€. Osram OS planea comercializar su tecnología a finales de 2016, por tanto habrá que esperar a 2017 para ver los primeros TV compatibles con este tipo de tecnología.


Noticia original

Quantum Colors provides better coverage of the color space for the new TV standards
- Major cost benefits and no need for cadmium
The new Quantum Colors conversion technology from Osram Opto Semiconductors will set new standards in LED backlighting for TV displays as it offers much better coverage of the color space, significant cost savings compared with conventional quantum dot sheets, and zero cadmium. For many years leading manufacturers of televisions have been demanding an ever broader color space. The TV standard is once again moving to a larger color triangle with Ultra HD. Quantum Colors was developed for precisely this standard. Initial customer projects are in progress, and this Osram technology is scheduled for backlighting LEDs for the mass market by the end of 2016.
Quantum Colors is based on a green quantum converter which is combined with red phosphor on a blue chip. The technology was developed in part in the SSL4EU and Hi-Q-LED projects funded by the EU and the German Ministry of Education and Research (BMBF) and does not require any cadmium. This results in numerous advantages over quantum dot sheets which have been used up to now for high-quality color rendering in TV backlighting. Quantum Colors offers superior coverage of the color space due to a narrow green peak with a full width at half maximum (FWHM) of only 30 nm. Color space standards such as DCI can be covered 100 percent and REC2020 more than 80 percent. What’s more, the Osram technology does not require the system or any other components to be adapted. This simplifies the production processes and the entire system.

Customers benefit from significant cost savings
Compared with quantum dot sheet solutions, which are based on semiconductor particles measuring only a few nanometers, costs can be halved. “I can give you an example of how much customers can save”, said Peter Lenz, Product Marketing LED at Osram Opto Semiconductors. “For a 55-inch Ultra HD TV with 100 percent DCI coverage the complete cost of the light source can be as low as 55 euros based on our Quantum Colors technology. The cost of just the quantum dot sheets in existing solutions is twice as high.” (Source of quantum dot sheet costs: “The Price of QD Material is Falling, But Not Enough” (DisplaySearch – February 6, 2015).

Quantum Colors LEDs offer excellent color consistency throughout their life
Another advantage is the constant color throughout the life of the LED. Quantum dot sheets take on a bluish tinge over time. As far as lifetime is concerned, Quantum Colors LEDs should last at least 30,000 hours; initial tests have produced positive results.

Link: New Osram conversion technology for backlighting LEDs | OSRAM Opto Semiconductors