![]() As a result, TCL’s engineers developed “Quantum Contrast” mini-LED backlight technology based on them. Of course, an increase in voltage and current increases their brightness, but this drastically reduces their longevity.īut the improvement of mini LED production technology has allowed engineers to expand these boundaries by increasing their efficiency. Unfortunately, they have less brightness compared to conventional LEDs due to the reduction of material to create the light. Usually their sizes vary in the range of about 1000 microns (0.04 inches), but today companies produce mini-LEDs measuring about 200 microns (0.02 inches). Unfortunately, sizes, energy drain, heat generated and cost limits the increase in their quantity. For example, their average number varies about 100 for ordinary models, and reaches several hundred for top models. Actually, each group of LEDs (they are called dimming zones) illuminates tens and even hundreds of thousands of pixels. Of course, each of the 8 million pixels in a 4K TV cannot have its own LED for backlighting. Therefore, modern models use several types of backlighting, depending on the class. Today, backlight technology is one of the main specs of TV, significantly affecting image quality. In fact, the further development of this technology has become the basis for FALD. ![]() To solve this problem, engineers developed Local dimming technology, which adjusts the backlight in areas of the screen depending on the frame content. But the LCD-matrix only partially blocks light, creating a grayer image with fewer black gradations compared to, for example, an OLED matrix. As known, LED TV creates an image by blocking the backlight. However, this task is technically very difficult for the LCD. Of course, reducing the brightness of each pixel also increases the visualization of contrast. In this case, TV dims the LEDs behind dark sections of the image, increasing contrast between the bright and dark areas of the image. The rapid spread of this technology was due to the growing popularity of HDR (high dynamic range) technology. ![]() But modern TVs are increasingly using FALD (full-array local dimming), which is an improved version of Direct-LED backlight. Each LED backlight type has its pros and cons. As a consequence, they provide absolutely black and, accordingly, endless contrast, which characterizes the white / black ratio.Īs known, LEDs emit light when exposed to electricity and are widely used in consumer electronics.Ĭompanies usually placed LEDs on the edges (Edge-LED backlight) or behind the screen (Direct-LED backlight). But OLED (organic light-emitting diode) TVs use their own radiation of organic diodes and do not require backlighting. ![]() Mini-LED Backlight technology has taken a worthy place in this list.Īs known, it was developed and first introduced by the Chinese TCL company at CES 2019.Īs known, all modern LCD TVs use LEDs for backlighting. For example, the list of innovative technologies developed in recent years for TVs includes HDR technology, HDMI 2.1 standard, 10 and 12-bit color depth, HFR (high frame rate) format, Micro LED, etc. First of all, it manifests itself in the segment of high-tech devices, including projectors, TVs, robotic vacuum cleaners, etc. For several decades now, fierce competition and digital technologies stimulate innovative boom in the consumer electronics segment.
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