Samsung working on new tech that could mean cheaper QD-OLED televisions

The Samsung logo
The advancement would reduce the need for layers of blue pixels by a third. Photo credit: Getty Images

Samsung has been trialling new ways of making QD-OLED (quantum dot organic light-emitting diode) pixels for its televisions, according to a South Korean professor.

TheElec website said improved blue OLED material could reduce the need for layers of blue pixels by a third. That would likely help reduce the price of the company's QD-OLED televisions.

Professor Kwon Jang-hyuk from Kyung Hee University told a Seoul symposium the company was prioritising using the phosphorescent blue OLED material in the panels.

That's because it's currently using significantly less efficient fluorescent blue material, compared to the 100 percent luminance efficiency offered by phosphorescent red and green pixels currently available.

Regular OLED screens use red, green and blue pixels while the newer QD-OLED screens only use blue and green, with the quantum dots converting that light into other colours.

According to TheElec, the layers are in what the company calls a 'four tandem structure', meaning there are three blue layers and one green layer inside the television panels.

Using a phosphorescent blue OLED would mean being able to reduce the number of blue layers to one, because the 25 percent efficiency of the fluorescent material could be replaced by the 100 percent efficient materials.

Samsung is also researching a three tandem structure, with two blue layers, according to Professor Kwon.

The company published a paper in February entitled 'Exceptionally stable blue phosphorescent organic light-emitting diode', the professor said.

"Samsung Display likely had made a process on developing phosphorescent blue OLED material," Professor Kwon said, with the company showing off the new tech "within the year".

One of the benefits of full phosphorescent panels would be longer life compared to panels with fluorescent materials, TheElec noted.