CNET's Geoffrey Morrison looks at the future of emissive displays

Geoffrey Morrison, writing for CNET about the state of emissive display technology for TVs, highlighted the promise of printable, electroluminescent Quantum Dot technology to reduce manfuacturing costs and bring emissive displays to even more devices.

Two vials of photoluminescent quantum dots next to a prototype blue electroliminescent QD. Credit: Nanosys - Amanda Carpenter and Oleg Grachev

One of the most promising current LCD technologies is quantum dots. These microscopic particles glow a certain color when you give them energy. Many new TVs have the photoluminescent version, with dots that glow a specific color when hit with light (usually the light from an LED backlight). These help LED LCDs achieve the deeper colors required of the Wide Color Gamut aspect of High Dynamic Range (HDR).

Down the road a little farther is the electroluminescent version of this technology. No LED backlight at all; just pixels made of quantum dots. These direct-view quantum dot displays, "QLED" if you will, should offer all the benefits of OLED at even cheaper prices. This is something Samsung is looking into, since they couldn't get OLED to work in large screen sizes.

Perhaps most interesting, these aren't mutually exclusive technologies. Quantum dots (the photoluminescent version) don't really care what kind of light you give them. So you could have an OLED material creating one color of light, with quantum dots creating the other colors (instead of color filters). Maybe that would be QOLED ("Quoh-lead")? Q-DOLED ("Que-doh-lead")?

NanosysCNET, Quantum Dot, QLED, OLED