{"id":784648,"date":"2026-05-09T16:52:25","date_gmt":"2026-05-09T16:52:25","guid":{"rendered":"https:\/\/www.europesays.com\/us\/784648\/"},"modified":"2026-05-09T16:52:25","modified_gmt":"2026-05-09T16:52:25","slug":"quantum-dot-tvs-beat-rgb-led-tvs-says-the-company-that-makes-qds-for-tvs","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/us\/784648\/","title":{"rendered":"Quantum dot TVs beat RGB LED TVs, says the company that makes QDs for TVs"},"content":{"rendered":"

At the Los Angeles Convention Center, two 85-inch TVs sat side by side inside the Nanosys meeting room at Display Week \u2014 a yearly business-to-business convention focusing on the technology that goes into displays of all types. One TV was a mini-LED panel with super quantum dots, and the other was an RGB LED \u2014 this year\u2019s hottest TV trend. Both TVs were showing the same content at the same time to highlight the differences between the two technologies \u2014 or more specifically, to show the potential failings of RGB LED backlights when compared to super quantum dot (SQD), which uses blue LEDs for the backlight.<\/p>\n

I should probably mention that Nanosys made the quantum dots in the first TV.<\/p>\n

\"An<\/a><\/p>\n

During the side-by-side demo, the TVs played the same content simultaneously for easy comparison. Photo by John Higgins \/ The Verge<\/p>\n

The TV on the right, with the Nanosys super quantum dots, was labeled as the TCL X11L<\/a> \u2014 the striped lower grille confirming as much \u2014 and the other was most likely the TCL RM9L. Nanosys wouldn\u2019t confirm as much, but I\u2019ve seen the RGB LED TVs from Hisense, Samsung, LG, and Sony in person, and it wasn\u2019t any of those. Jeff Yurek, vice president of marketing at Nanosys, informed me that both TVs were in Filmmaker Mode and color was set to native to allow both to hit the largest gamut possible.<\/p>\n

As a quick refresher, RGB LED TVs use red, green, and blue LEDs grouped into zones to create a colored backlight based on the image displayed on screen. Theoretically, this gives the TV more vibrant and saturated colors than mini-LED TVs like the X11L with blue backlights, without needing to rely solely on the quantum dots. The primary potential issue<\/a> is that the colored light provided by the backlight will bleed into adjacent pixels or zones that differ in color, resulting in what\u2019s called color crosstalk. Practically, this could cause the red of a bright shirt or hat to cause the skin of the wearer to have a reddish hue. And that\u2019s exactly what this demo showed.<\/p>\n

\"A<\/a><\/p>\n

One of the demonstrations alternated between this slide with two rows of boxes and a row of crosses and the next slide. Image: Nanosys<\/p>\n

\"A<\/a><\/p>\n

On the RGB LED TV, when the white cross was introduced to the top row of boxes, there was a shift in the color intensity of those boxes. Image: Nanosys<\/p>\n

\"A<\/a><\/p>\n

When squares without a white cross were measured, the RGB LED TV\u2019s color points were slightly wider than for SQD. Image: Nanosys<\/p>\n

\"A<\/a><\/p>\n

The white cross caused the green color point (top of the triangle) and blue color point (bottom left of the triangle) to move between the SQD color points. Image: Nanosys<\/p>\n

During the entire demonstration, the same video feed went to both TVs. One slide showed three rows: two rows of boxes with the primary and secondary colors \u2014 blue, green, red, cyan, magenta, and yellow \u2014 and the third with a thin white cross on a black background under each colored box. The top row of boxes would then alternate between a solid box and one with a white cross inside it. On the RGB LED TV, as the white cross appeared in the top row, it was easy to see the color of the area around the cross get a bit lighter and less saturated. The color crosstalk didn\u2019t just happen within the top row of boxes; the box color from the middle row also visibly bled into the bottom row of crosses. This shows in the TVs\u2019 BT.2020 color gamut<\/a> measurements as well, with the introduction of the white cross diminishing overall BT.2020 coverage, most dramatically with the blue and green color points.<\/p>\n

But unless you\u2019re a measurement nerd like me, you don\u2019t watch solid blocks of color on your TV for fun. The effect is also present with skin tones \u2014 something that, as humans, is easily noticed. Just as the color of the blocks bleeds into the white cross, so does a colored background into skin tone; still images of a woman\u2019s face with a colored background caused her skin tone to shift toward the background color. To make sure my eye wasn\u2019t causing the color bleed, as opposed to the TV, I used a scope to focus just a portion of the woman\u2019s face, blocking out the rest from my view. I could still tell which background color was displayed by the change in hue of her skin.<\/p>\n

\"Two<\/a><\/p>\n

While BT.2020 measurements stayed at a consistent percentage on the SQD TV, the percentage went down on the RGB LED TV as the color patch got smaller. Image: Nanosys<\/p>\n

The SQD TV did not exhibit any color crosstalk. It also had better contrast, which comes down to the number of dimming zones. The X11L is advertised as having up to 20,000 dining zones, although according to Rtings<\/a>, the 85-inch model has 14,400 \u2014 still an impressive number. The RGB LED TV used in this comparison has, I was told, around 8,000 dimming zones. One reason the number is lower is because each dimming zone on an RGB TV, at a minimum, needs to have three LEDs \u2014 a red, a green, and a blue \u2014 and those take up space. But when the backlight is composed of only blue LEDs, a single LED can be a dimming zone, giving much finer control.<\/p>\n

All of this is perceptible in actual content. During an action scene with quick movement and fast cuts, I could still pick out differences as bright colors affected those surrounding them, particularly with skin tones. And in night scenes, the contrast difference was notable. If the RGB LED TV was in the room by itself, without the SQD TV for comparison, I don\u2019t think the color crosstalk would look as glaring. Our eyes can adjust quickly to visual issues, and we stop noticing them. But taking away the comparison doesn\u2019t take away the problem.<\/p>\n

This isn\u2019t brand-new information. Industry experts have been concerned about the potential for color crosstalk in RGB LED TVs since the technology debuted at CES 2025. Those concerns have grown as more RGB LED TVs arrive on the market this year. LG Display, notably a maker of OLED panels which are in direct competition with RGB LED, produced videos<\/a> a few weeks before this year\u2019s CES, highlighting the problems.<\/p>\n

Of course, both Nanosys and LG Display have vested interests in downplaying RGB TV tech. The performance of one RGB LED TV also doesn\u2019t tell the story for all RGB LED TVs. I didn\u2019t notice any crosstalk issues when I reviewed the Hisense UR9<\/a>, although the more I see other RGB LED TVs, the more I think the Hisense may be bypassing the issue and falling back to white backlighting, not RGB, whenever there were a lot of colors on screen. Also the processing capabilities of the upcoming Sony RGB LED TVs could make color crosstalk a nonissue on those sets. And we\u2019re still right at the beginning of the RGB LED TV story. As the technology continues to develop and refine, these issues should be mitigated. But for 2026, SQD at least looks to have the upper hand.<\/p>\n

Follow topics and authors<\/strong> from this story to see more like this in your personalized homepage feed and to receive email updates.<\/p>\n