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QLED is a con, but for entirely different reasons than you state. Samsung where extremely light on details when they introduced their QLED televisions, but questioning by AV sites revealed that these are not electroluminescent quantum dot displays, but are in fact LCD displays with a quantum dot backlight. It's a lot like Samsung's so called LED displays, that are again just LCD displays with an LED backlight. There's no denying that these quantum dot LCDs are a significant improvement over standard LCD, but they still possess many of the drawbacks of LCD, and to market them as quantum dot displays is misleading.

Companies are working on true electroluminescent quantum dot displays, with BOE being the first to demonstrate prototypes. There are some pictures here, and another article here. There's a video somewhere but I can't find it right now. Digitimes reported that Samsung have prototype electroluminescent quantum dot displays that they have not yet shown publicly, and other Chinese manufacturers besides BOE are working on the technology.

It still looks like its a good few years before we'll see commercial electroluminescent quantum dot displays, and micro-LED displays may have taken off by then. I'm still waiting for a decent computer monitor. It is insane that nearly 20 years later you still can't get a monitor that comes close to the Sony GPD-FW900.

Seems to me that the ideal headset:
* has dual high-res cams located above the eyes, or quad cams above and below, which can 'average' out to eye level
* Is translucent/transparent with an electrochromic backplate
* has pupil sensors on the inside
* is wireless, perhaps with a battery 'pendant' that incorporates some UWB connection to the host computer
* integrated mic on the bottom of the goggle frame as well as noise-cancelling mic on top
* face cams can recognize fingertips, physical cues (like a laser mouse) to handle fine head orientation
* possibly incorporate hardware neural net coprocessors for support features as well as image/pattern recognition

Awhile back, hopefully suitable for 600+dpi displays:
http://www.oled-info.com/trans...

And a consumer level version of this might be cool:
http://www-03.ibm.com/press/us...

Not to mention some pioneering work in technology like OLED http://www.oled-info.com/lg-buys-kodaks-oled-unit and some of the better CCD sensors on the market.

Also at the show were examples of Samsungs prototype transparent OLED screens. It offers another way to "put yourself in the picture" http://www.oled-info.com/files/images/Samsung_Transparent_OLED_Ces_2009.jpg and http://www.oled-info.com/files/images/Samsung_Transparent_OLED_Ces_2009_2.jpg

Also at the show were examples of Samsungs prototype transparent OLED screens. It offers another way to "put yourself in the picture" http://www.oled-info.com/files/images/Samsung_Transparent_OLED_Ces_2009.jpg and http://www.oled-info.com/files/images/Samsung_Transparent_OLED_Ces_2009_2.jpg

R&D through several companies started in 1996. The tech name is flexible OLED.
A history of which can be found here http://www.oled-info.com/history/

Check up this site, for OLED information and news:

http://www.oled-info.com/