Personal View site logo
Cinema gear deals, direct from factories - Gear deals and Gear deals section. Also check Cameras, lenses, software, gear deals.
You support is vital for us. To keep this place ad free and independent, select one of the options below.
Donations are going to community support costs, hosting, etc. Your support allows to improve and expand this site.
Quantum dots - next big thing in monitors (aka Sony TRILUMINOS)
  • Idea behind this displays is to use quantum dot effect making very sharp spectrum peaks for red, green and blue. Such approach allow to improve color gamut while keeping energy efficiency.

    Sony’s approach uses an uncoated LED inside a thin glass tube packed with red and green quantum dots supplied by Massachussetts company QD Vision. When the dots get blasted with electricity, they only emit light at their characteristic wavelengths, which, combined with the blue light from the LED, form a white light that’s more intense at those three points.

    It is used in their TV, Monitors, tablets and phones.

    Like:

    HiSense introduced a 4K quantum-dot “Wide Gamut TV,” which uses QDEF film rather than the QD Vision rail. It will enter the Chinese market in March; U.S. in the summer. Maximum size is 85 inches, and there is an H.265 decoder built in.

    See more at:

  • 23 Replies sorted by
  • Note that Kindle Fire HDX tablets use same tech, result:

    Kindle Fire HDX 8.9 is the best performing Tablet display

    As I have it I can only fully agree.

  • I have 2 triluminos displays (Sony Vaio Duo 11, Flip 15A 1620p) It certainly better than other LCDs, but the black level isn't that great in low light. The galaxy tab S 10.5 OLED display is much better in uniformity and absolute black.

  • It certainly better than other LCDs, but the black level isn't that great in low light. The galaxy tab S 10.5 OLED display is much better in uniformity and absolute black.

    This tech has nothing to do with black level (of course, premium displays also use various tech to reduce black levels) :-) And OLED will be better as it has no backlight, just oleds are off.

  • Does the Kindle Fire HDX 8.9 work with the Panasonic Image app?

  • Does the Kindle Fire HDX 8.9 work with the Panasonic Image app?

    If it runs on Android it must be no issues, just get APK file.

  • I almost bought into the Amazon quantum dots when I got my tablet, the tech looked so cool. I basically went for the Nexus 7 because I got a deal on a refurb and also I knew I could root it very easily in order to add on an external drive through the power port. This was the review I read a few months a go http://www.displaymate.com/Tablet_ShootOut_4.htm

    The Nexus is a tiny bit bit brighter, but unless you use it at the beach, you won't need that. I found the display very good for reading, better than my Kindle.

    In 2013, the same site rated the Quantum dot tech the best of all the displays for the larger tablets, but now they seem to think that the new OLED is slightly better http://www.displaymate.com/OLED_Tablet_ShootOut_1.htm#Conclusion

    Frankly, looking at these side by side I notice a few things. First, they are all great displays and the differences are small. Second, the black level is pretty good even on the non-OLED screens. You only notice the difference if you are like looking at a large solid black area,

    The Adobe 100 accuracy is very handy on the road for checking color.

    Lastly, Apple is always in 3rd place on these tests, but those screens look nice as well.

    If I had to do it over, I might go for the Amazon model with the built in sim based wifi for those moments on the road when there is no regular wifi. The Nexus works beautifully with my GM1.

  • I've got a Sony TV now that uses the "Triluminous" technology, and I had a Sony TV before that used separate red, green and blue LEDs before. Trilumnious is visibly inferiour to the older (and certainly more expensive) separate LED technology. It's probably better than the abundant "white" LEDs, though.

    But the biggest visible disadvantages of the newer TV are not about color gamut, it's the glaring screen surface and the "edge lighting", which is not quite as good as the true local direct backlight dimming the older TV employed.

    All in all, I currently see a "better than 5 year old technology" picture only from OLED displays.

  • Trilumnious is visibly inferiour to the older (and certainly more expensive) separate LED technology.

    Visibly? Or you have measurements?

    Most of older top sets you talk about were targeted to rich users, so were set for wide gamut and heavy use of local dimming (btw I do not remember any that use individual dimming, blocks only).

    But the biggest visible disadvantages of the newer TV are not about color gamut, it's the glaring screen surface and the "edge lighting", which is not quite as good as the true local direct backlight dimming the older TV employed.

    First, only top models used three color direct led (with big number of leds) backlight.
    Glaring surface has nothing to do with it at all. Btw, also as edge led, if they wanted they can use it for direct backlights, it is just too costly and few see the difference.

    All in all, I currently see a "better than 5 year old technology" picture only from OLED displays.

    So, it is false statement. Display tech progress is quote easy to see.
    Btw, oled picture really hardly changed for last 5 years :-).

  • The tiny dots are great. I'm all for highest resolution etc. But I feel like I've gotta say that the name "Quantum Dot" [TM] is a misnomer.

    In physics, a quantum (plural: quanta) is the minimum amount of any physical entity involved in an interaction..

    A photon is a single quantum of light, and is referred to as a "light quantum". http://en.wikipedia.org/wiki/Quantum

    What these people are selling is really, really tiny dots but nothing to do with quantum. (Just saying).

    BTW, Dr Karl (Karl Kruszelnicki) often reminds us that every time he hears the word Quantum outside Quantum physics, he suspects a hoax of some kind.

    FWIW..

  • What these people are selling is really, really tiny dots but nothing to do with quantum. (Just saying

    As I understand term is common in the industry and is not used by one company only.

    A quantum dot is a nanocrystal made of semiconductor materials that are small enough to exhibit quantum mechanical properties

  • Korea-based vendors are developing quantum dot TVs in order to expand their high-end TV range, according to sources quoted in a report from Korea-based Digital Times.

    Both LG Electronics and Samsung Electronics are reportedly developing the technology for units that may be released as early as 2015. The move would give the companies increased influence in the high-end TV segment where they both are currently focused on development of Ultra HD and OLED TVs, the report said.

    Surprise.

  • Interesting

    It turns out that CIE 1931 works well for monitors that use transmissive technology with a broadband light source.

    CIE 1931 fails in emissive displays, and displays that employ narrow band light sources:

    OLEDs are emissive because their light is generated by individual pixels on the front of the display: they aren’t filtering another light source, each pixel is creating very pure, narrow spectrum hues from scratch.

    image

    CIE 1931 also fails in displays that use narrow spectrum transmissive light sources. Many LED LCD monitors** work in the traditional way, by filtering light from a single type of LED into red, green and blue components, but some manufacturers use very narrow band red, green and blue LEDs to create richer hues.** CIE 1931 works with the former, but the latter requires the Judd offset.

    In both of these circumstances the narrow bandwidth of the emitted spectrum results in very pure color and a larger color gamut, but white balancing the monitor to CIE 1931 standards results in a monitor that looks green compared to a CRT reference. (This is due to a property called “metameric failure.” Calibration instruments will say that the white balance is correct, but by eye it’s clearly not… until the Judd offset is applied.

    Quantum dots displays also must be affected

    http://www.dvinfo.net/uncategorized/the-judd-offset-what-i-didnt-know-i-didnt-know-about-oled-monitors.html#prettyPhoto

    g7x_test10.jpg
    550 x 249 - 28K
  • The world's biggest TV makers, Samsung Electronics Co Ltd and LG Electronics Inc, are turning to quantum dot technology for their next-generation TVs as it could still be years before OLED is affordable for the mass market.

    The resulting lower prices could help the technology catch on far quicker. One industry analyst estimated a 55-inch quantum dot TV could be priced 30 to 35 percent more than a current LCD TV, while an OLED TV could be 5 times more expensive. LG recently launched a 65-inch ultra-high definition OLED TV for 12 million won ($11,350) in its home market of South Korea.

    And this is just some bunch of lie. 55" LG OLED is around 3x in price if you look carefully, sometimes less. Plus for TV to be 35% more panel price must be almost double, while all this QD can be made really cheap in mass production.

    Btw, QD solve no actual problems, as most TV already have wider color gamut than sRGB. Just some marketing.

  • LG Electronics (LG) will unveil a new 4K ULTRA HD TV with quantum dot technology as a new component of its expanded TV lineup at the 2015 International CES®, Jan. 6-9 in Las Vegas. LG’s 4K ULTRA HD TVs with quantum dot technology will offer a wider color palette and improved color saturation than conventional LCD TVs and will be available in 2015 to complement LG’s other ULTRA HD TV and OLED TV offerings.

    http://lgnewsroom.com/newsroom/contents/64797

    OMG. Marketing fuckers. Actual measurements show that their TV already can show full sRGB space.

    QD was made for phones and tablets to reduce energy consumption, so, proper way is to monitor them as more energy efficient.

  • China-based vendor TCL has launched quantum-dot LCD TVs with a NTSC value of 110% through technological cooperation with US-based QD Vision, with Ultra HD panels supplied by affiliated China Star Optoelectronics Technology.

    TCL was quoted by Twice at a news conference stating its 55-inch 4K Ultra HD quantum-dot TVs with Color IQ technology will be available soon in more than 2,000 stores throughout China. The new H9700 TV offers image performance superior to OLED, claimed TCL.

  • Samsung Electronics, LG Electronics, Sony and China-based TCL and Hisense, are expected to launch quantum dot (QD) models for market differentiation in 2015, according to Taiwan-based supply chain makers.

    Sony already launched QD LCD TVs through cooperation with US-based QD Vision as early as the second half of 2013, the sources said.

    Production cost for a QD LCD TVs is US$100-150 higher than that for an ordinary model, the sources said.

    Global QD LCD TV shipments will reach two million units in 2015 and increase to 26 million units in 2020.

    Marketing.

  • Increased models of QD-LCD TVs from Sony, TCL, LG Electronics and Samsung Electronics are expected to hit the market in 2015 due to their wide color gamut advantages that produce image quality comparable to OLED.

    Shifting to QD LCD TVs would allow the vendors to maintain influence in the TV segment as they continue to develop OLED TV technology, which the Korea vendors still aim to develop in upcoming years as pricing comes down.

    Wide gamut again, While OLED most important advantages have nothing to do with gamut.

  • Samsung demo in Poland

    Panel layers

    image

    image

    Gamut comparison

    image

    Quantum dots themselves emitting specific colored light

    image

    See also https://news.samsung.com/global/samsung-dots-it-exhibit-outlines-suhd-tvs-quantum-dot-mechanics

    img2596.jpg
    800 x 488 - 57K
    img2598.jpg
    800 x 449 - 59K
    img2595.jpg
    800 x 494 - 38K
    img2597.jpg
    800 x 455 - 28K
  • Good paper on subject

    Although LCD displays dominate in the display market, they can only reach about 70% of the color performance of OLEDs. LCDs can reach the sRGB color gamut at best because of the white LEDs that are used as the backlight to illuminate the liquid crystal module (LCM). There are millions of pixels that are divided into three subpixels (red, green, and blue) in the LCM. The color of the subpixel is controlled by the efficiency of the filter and of the spectral energy of the white light from the backlight. To make a high quality color, the filter either needs to be very narrow, which will let less light through, or the specific color component from the white light must be narrow and tuned to the desired wavelength.

    The LED light source does not meet the requirement for narrow color peaks. Quantum dots can solve this problem owing to their narrow emission and high quantum yield. QD Vision and Nanosys are currently developing products that can easily be placed in existing LCD manufacturing. The quantum dots are packaged into either a tube (QD Vision) which is placed adjacent to edge-lit LEDs, or in a film (Nanosys) on top of the LED backlight. Recently, quantum dot LEDs are being researched as the backlight in displays. Kim et al. fabricated a full color QD display using a solvent-free transfer printing method to pattern the individual red, green, and blue emitting QDs onto the pixelated display panel.

    Previous methods of patterning QDs onto the pixels, such as spin-coating, cause a cross-contamination between the three sizes. Other methods lead to non-uniform films with a rough surface. This results in a decrease in the charge transfer and a decline of quantum efficiency. In the transfer printing method, QDs are spin-coated onto a surface modified donor substrate, followed by the application of a polydimethylsiloxane (PDMS) stamp to the QD film. Due to the surface energy of the stamp being less than that of the donor substrate, with sufficient pressure, the QDs are picked up. The QDs are then transferred to a device stack into an array of narrow stripes. Compared to a film that was fabricated using a spin-coated method, the density of the printed film has a 20% greater density of QDs. When integrated into an organic/inorganic hybrid LED structure, the printed red, green, and blue QDs had brightness values of 16,380, 6,425, and 423 cd m−2 and current efficiencies of approximately 3.00, 0.55, and 0.05 cd A−1, respectively.These values are about 25–52% greater than the values collected with the spin-coated device. The method of QD printing was employed to produce a 4-inch full-color active matrix QD display that showed a near perfect image. Due to the elastomeric PDMS stamp, this printing method can transfer QDs onto flexible substrates, which is necessary for scaling up to a roll-to-roll system.

    http://jss.ecsdl.org/content/5/1/R3019.full

  • Samsung want to make QLED TVs, but can't

    Light emissions based on QD materials is of two modes, photoluminescence and electroluminescence, with the former including types of QDEF (QD enhancement film) LCD, QDCF (QD color filter) LCD, QD-OLED hybrid, RGB (red, green, blue) QD LED and the later mainly being QLED. Samsung SUHD TVs are QDEF LCD type and QDCF LCD TVs.

    Samsung want to make wide color gamut reaching 98% of Rec. 2020 standards in 2017.

    I have no idea how. Check paper I provided above, normally you need laser sources for it, or best QLED with modified filters.

    Samsung Electronics plans to begin production of QLED TVs in 2019. QLED TVs will have lower production cost and longer service life than OLED models. However, production of QLED TVs currently is faced with technological problems, mainly short service life of blue-color QD materials and how to precisely and evenly coat red, green, blue QD materials.

    Again this blue color that is main obstacle in all OLED screens.

  • Yes, marketing games

    Samsung Electronics, at the Consumer Electronics Show 2017 on early January, renamed its SUHD (super Ultra HD) TVs as QLED TVs, causing concern about development of quantum dot (QD) TVs. However, QLED is technologically much different from QD TVs, because QLED still uses LED backlighting, and thus QLED TVs are not true QD TVs by technological definition, according to WitsView.

    QLED TVs placing a QDEF (quantum dot enhancement film) over the LED backlight to increase color saturation performance. Samsung's choice of name may be motivated to differentiate the TVs from OLED TVs launched by LG Electronics.

  • sample852.jpg
    575 x 291 - 46K
    sample853.jpg
    578 x 301 - 40K