News from November 24th, Beijing time, self-luminous quantum dots can achieve the correct color in a wide range and detail in different light and dark stages, and can be used in a new generation of large-scale display screens with effective light use and simple structure.
What is a quantum dot (QD) display?
What are quantum dots?
Quantum dot color structure
The self-luminous quantum dots can achieve the correct color in a wide range and detail in different light and dark stages, and can be applied to a new generation of large-scale display screens with effective light use and simple structure.
The structure and principle of QD-Display
Display screen with night scene background Blue Self-emitting Layer QD Layer
Comparison of LCD and QD display structure diagrams
Self-luminous display screen-The QD display screen is composed of an electronic circuit TFT layer that adjusts the light source layer, a light source that emits light, and a QD light-emitting layer that uses the light of the light source to present colors.
As the light source of the QD display, blue light with super light energy is used, so it can show brighter brightness.
In particular, Samsung Display's QD technology uses a top-emitting method that effectively uses light. Compared with LCDs that require backlighting, it is designed into a simpler and more effective structure, resulting in a thinner and lighter display.
Why choose QD display?
Wide color gamut
QD display that can display more than 80 percent colors
x 1.5 Traditional display 60 percent QD display 80 percent color volume,
ICtCp BT2020 standardization
QD display
Traditional display
The color purity of the blue light generated by the QD display from the light source is very high, so the red and green QDs that receive this light and present colors can naturally also present high color purity color light. High color purity RGB can bring a wide range of color performance. Therefore, the QD display is a display with a wide range of color expression among existing displays, and can offer you colors that are closer to the colors that our eyes actually see.
Outstanding perspective
Comparison of the front and side brightness ratio of QD and ordinary display
Traditional display
QD display
(Front side brightness ratio) LCD color filter background light QD display screen QD conversion layer blue light EL self-luminous
Generally speaking, light is direct. When looking at the display screen, the angle of viewing the screen will also affect the brightness or color. QD has the characteristics of omni-directional and uniform light emission. When viewing the display, no matter from which angle it is viewed, it can convey uniform brightness and color, and bring you excellent picture quality.
The contrast of the QD display shows the traditional display
100,000: 1 Traditional display QD display
1,000,000: 1QD display
High contrast
Contrast Ratio refers to the difference between the brightest and darkest pictures of the display. Generally speaking, the display screen has limitations in improving the brightness of the screen due to problems such as limited light sources or power consumption. Therefore, the degree of black expression has a huge impact on contrast.
LCDs that use the backlight as the light source have limitations in rendering complete black because the backlight is always on, and each pixel cannot be adjusted.
The QD display screen can adjust the light source for each pixel. In the dark black, by turning the light source of the pixel to Off, it can bring a more perfect black.
Thanks to the deeper black rendering, the QD display can reach a high contrast ratio of 1,000,000:1, achieving a deeper and more detailed picture quality.
Picture showing the proportion of harmful blue light
Care for eye health
In the blue region that emits blue light in visible light, the wavelength in the range of 41455nm is shorter and the energy is stronger, which will increase eye fatigue, inhibit the secretion of melatonin, etc., and then affect sleep.
Compared with ordinary LCD, the proportion of "harmful blue light" that affects the human body in the QD display is 4050 percent lower, which can bring a more comfortable viewing experience.
Features of each application
television
QD display contrast description
HDR coverage
100 percent QD display 85 percent LCD54 percent
HDR (High Dynamic Range) is the abbreviation of High Dynamic Range, which can make bright places brighter and dark places darker. It is a technology that expands the range of brightness (Dynamic Range) closer to what the human eye actually sees.
Therefore, in order to better express HDR, the degree of brightness from dark to bright is particularly important. The QD display can present a wider range of brightness by presenting perfect black. Not only that, it can also present a wider range of colors based on changes in brightness, enabling excellent HDR performance that is superior to other competing technologies.
Comparison of QD and ordinary display
QD display
Traditional TV
Various lights such as sunlight coming in through the window, electric lights on the ceiling, and peripheral lighting will be reflected on the display screen, which will hinder our vision and make it difficult for us to see the video in the screen.
The Samsung QD display is designed with the best structure in order to minimize reflections, reaching the lowest level of reflection among existing displays.
Because of this, it will not be restricted by the place and the environment, even in a bright and wide environment, it can also bring the best image quality without reflection.
monitor
QD display description picture Blu-ray EL self-luminous QD display traditional display
The Samsung QD display has a very fast response speed, creating a smooth picture without stuttering, and provides you with the best environment when you experience games and videos.
If the picture response speed becomes slower, afterimages will appear in the fast-moving video, which will increase the fatigue of the eyes.
The LCD sends a signal to the liquid crystal, and it takes time for the liquid crystal to physically move, so the response speed is slow; compared with this, the circuit signal of the QD display screen can immediately generate light, so the light adjustment time is very short and the response speed is very fast.
Because of this, clean image quality without afterimages can be achieved, and smooth movement can be felt in a more comfortable environment.
