![]() Most premium displays, like Samsung QLED TVs, are marketed as having a wide color gamut (WCG), which is a prerequisite for 4K resolution. Although OLEDs offer unprecedented black levels, quantum dot TVs can reach peak brightness levels of up to 2,000 nits, yielding extremely vivid pictures. ![]() In fact, quantum dots have been earmarked as a gateway technology to the Rec.2020 color space, which is effectively a measure of the chromaticities that can be reproduced by a given display technology. Televisions using quantum dot technology have a wider color gamut, which is advantageous for 4K televisions that can process a lot more color information than other televisions. Quantum dots also provide LCD TVs with higher color saturation, making colors seem more pure. This enables precise colors and whiter whites. We previously mentioned the enhanced colors that quantum dots produce, and this can be ensured by fine-tuning them to ensure the exact light required is emitted. There are many benefits of using quantum dots for television displays. QLED TVs are available on the market today, usually at a premium price point. ![]() This is coupled with their inherently good quantum yields. The concept can be used in OLED or LCD displays.Īs quantum dots are photoluminescent, they are more effective than white light sources as they produce monochromatic light naturally, yielding more saturated colors at a fraction of the energy cost. Conventional LCDs aim to generate highly saturated colors from pure white light, which is inefficient as it relies on color blocking where as much as 66% of light generated by a backlight is wasted.Įxample of the architecture of red, green and blue pixels using QD color conversion layers. Future iterations are likely to include quantum dot color filters (QDCFs) and, eventually, direct-view quantum dots.Ĭurrently, most quantum dot TVs are of the film-type where a film of red and green quantum dots is integrated into the screen architecture with a blue light at the back providing illumination. Quantum dots have been integrated into displays using a range of different approaches, including edge-lit optics and film deposition. It is this property that makes quantum dots useful in display devices, such as televisions. The wavelength of the emitted light can subsequently be altered precisely by changing the size, shape, or material of the quantum dot. Quantum dots absorb light of a range of wavelengths and emit light of a different, defined wavelength depending on their size or composition. These nanostructures confine the motion of valence band holes, conduction band electrons, or excitons in all three spatial directions. Quantum dots are semiconducting nanostructures that are so minute they have different optical and electrical properties than larger particles. Quantum dot TVs perform a very similar process, but they use semiconducting nanocrystals to enhance the picture–particularly with respect to color reproduction. Color filter films convert the single wavelength backlight to generate three basic colours (RGB) for the LCD display. Photons are selectively obstructed by the liquid crystals, which is how an image is produced on-screen. When these LEDs are activated, their light is aimed through a polarized filter using a light-guide plate. In a conventional LCD TV, there is an LED backlight–or occasionally two banks of LEDs at the edge of the screen. But what are quantum dot TVs and what differentiates them from other display technologies? More specifically, what is a quantum dot TV? Quantum Dot TVs: Innovative LED LCDsĪ quantum dot TV is essentially a new type of LED-backlit LCD TV with dramatically enhanced color. The main takeaway for consumers is that these innovative displays offer the best picture quality ever realized on-screen, with deep blacks, optimal viewing angles, and pristine colors. If you are familiar with the latest TV technologies, you have likely come across acronyms like QLED TVs, OLEDs, and even QD-OLEDs.
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