Rumor: Samsung makes OLED TVs based on blue OLEDs with quantum dots
Samsung is said to have shown prototypes of 55″ and 65″ OLED TVs behind closed doors during CES in January. The OLED TVs would use blue OLEDs with red and green color filters, equipped with quantum dots.
The South Korean ETNews writes that on the basis of ‘industry sources’. The prototypes would not be ready for production yet, because the blue light from the OLEDs would still leak and thereby disrupt the display of other colors.
Samsung calls the technology qd-oled and would see it as an intermediate step towards the arrival of TVs based on micro LEDs, in which small LEDs are used for each pixel that can be switched off completely. Samsung also showed a prototype of such a microLED TV at CES, but that was still a 146″ model and the microLEDs are not yet small enough to make TVs in a smaller size with a high resolution.
With its current QLED TVs, Samsung uses LCD panels with backlighting and a layer of quantum dots on top. The QD OLED TVs have no backlight and could therefore display a higher contrast, because a perfect black display is possible with OLED by switching off the diodes.
Samsung would claim that the QD OLED TVs display better colors than OLED TVs from other manufacturers, which use white OLEDs with a color filter. If Samsung actually starts making qd-oled TVs, they could also be made thinner than the current qled models, because no backlighting is needed.
Samsung made OLED TVs with RGB subpixels in the past. In addition, the color balance deteriorates over time, because the different sub pixels do not wear out at the same rate. LG holds the patent for making OLED panels with white OLEDs. These panels work just like LCDs with color filters to display colors. Because LG owns the patent, Samsung cannot make televisions with white OLEDs.
Two years ago, a Samsung CEO said he saw no future in OLED TVs. He stated that no major progress has been made since 2013 in making the production of the panels cheaper and easier.
Old Samsung OLED TV