#Mini-LEDbacklight

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Cooler Master Devastator 3.

Intro:

Devastator 3 van Cooler Master. De budget set voor de gamer met de kleine portemonnee. Zonder te openen verwacht ik toch een verrassing kwa techniek en licht.

Bij het zien en openen van de verpakking. Krijg ik meteen een vrolijk gevoel. Cooler Master maakt het onmogelijke weer mogelijk. Een leuke combo voor belachelijk weinig geld. Bij het bekijken en vasthouden van het toetsenbord voelt het goed en solide aan. De muis voelt wat licht aan maar dit mag zeker de pret niet drukken.

Zoals altijd maak ik de reviews van toetsenborden/ muizen altijd de review met het product om zo tijdens de review te zien en voelen hoe alles reageert, aanvoelt en eindigt na het schrijven van de review.

  Uitpakken:

Dit keer dus de Devastator 3. Het toetsenbord en muis combo van Cooler Master die voor 3 tientjes over de toonbank gaat. Dat kan niet zou je meteen zeggen. Toch is het echt zo . Is het high end dan. Néé dat zeker weten niet want je voelt echt wel het verschil tussen de Devastator 3 toetsenbord en de MS120 toetsenbord en of de Master Keys pro. Maar goed dit is dan ook echt een heel ander segment toetsenbord.  Zo ook als je de MM520/30 vergelijkt met de muis van de Devastator zie je echt wel een verschil. Maar Waar je hem wel mee kunt vergelijken is de ms120 muis. Die is zelfde ontwerpt als de MM520 maar heeft een veel mindere optische sensor waardoor je kunt nagaan dat de techniek de prijs bepaalt. Hoe vet je toetsenbord en of muis eruitzien. Het gaat pas in de kosten lopen als je duurdere switches gaat gebruiken en ander materiaal.

Maar wat treffen we aan bij het openen van de doos. Dit keer zien we net zoals in de MS120/121 een muis en toetsenbord goed verpakt. Voor de rest alleen een boekje en meer heb je eigenlijk niet nodig.

Techniek:

Beginnend bij het toetsenbord.

Devastator 3 Keyboard specs:

Het toetsenbord is gebouwd op een plastic frame en voorzien van Membrane switches die voorzien zijn van een ledbacklight panel die de 7 kleurtjes kan genereren. Door een simpele druk op de knop kun je door 7 verschillende kleuren kiezen. Paars is wel 1 van mijn favoriet. Verder zien we 6 multimedia Keys die de standaard functies behelzen. (Harder zachter, Play stop ff en rew).  Wat wel erg op valt is dat als ik lekker tik en af en toe wat moet corrigeren is dat alles niet rete snel reageert zoals het zou moeten. Hierdoor merk je dus dat je met het instap segment te maken hebt. Maar goed wat wil je… een set voor 3 tientjes die allesbehalve misstaat op je bureau. Waarom dan gaan zeuren over die kleine minpuntjes.

De Devastator 3 muis specs:

De muis ligt goed in de hand al voelt deze wat lichtjes aan. Voorzien van lange muisknoppen en 2 muisknoppen aan de zijkant, afgemaakt door een indruk baar scroll wiel. Heb je alle knoppen gehad van de muis. De laatste en meest belangrijke voor mensen die gek zijn op kleurtjes is de kleur knop die je makkelijk door de kleurtjes laat scrollen.

De muis is voorzien van Omron switches om zo een 10miljoen clicks te kunnen garanderen. Afgemaakt met Avago 3050 optical sensor om de precisie van de muis aanwijzer te garanderen. Op de muis zien we aan weeszijde rubberen grip om de muis stevig vast te kunnen houden. De duidelijke palmgrip muis is niet voor mensen met mini handjes want die komen echt wat lengte te kort. De muis beschikt over 4 levels van dpi (600, 1200, 1800, 2400). Met een pollingrate van 125hz maakt de muis een totaal plaatje

Meer info over de Sensor

Zoals verteld zie je op zowel de muis als het toetsenbord de kleurtjes. Op het toetsenbord 1 egale kleur die alle toetsen goed verlichten. Op de muis is het scrol wiel en de kleur knop goed verlicht. Op de kont van de muis hebben ze een gave tekening van lijnen gemaakt die oplichten. En bij de kleur paars… iets blauw paarsig lijkt te zijn wat mij zeker aanspreekt.

Conclusie:

De Cooler Master Devastator 3. Het duidelijke instap segment van CM die je een gave kleur en game beleving geeft door de extra duimknoppen voor maar 3 tientjes. Met de Membrane switches kun je rustig gamen of typen zonder dat mensen het vervelend of storend vinden. Met de muis erbij die goed genoeg is om te gamen en zelfs CAD tekenen. (Wat toch wat precisie vergt), heeft Cooler Master een gaaf setje op de markt gezet.! BEAT THAT COMPETITION!

Links:

Cooler Master – Website

Cooler Master – Devastator 3

Cooler Master – Facebook

Cooler Master – Instagram

Foto’s:

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[:] [:nl]Devastator 3 van Cooler Master ! Devastating[:] #2400dpi #7 #Backlight #backlit #board #bundle #CM #cmstorm [:nl] Cooler Master Devastator 3. Intro: Devastator 3 van Cooler Master. De budget set voor de gamer met de kleine portemonnee.

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TCL QLED 4K C715 and C815 Overview

Over the past few years, TCL TVs have attracted the consistently high attention of many consumers and experts. This Chinese giant has burst into the American market with budget LED TVs 3, 4 and 5 series. The high enough quality, one of the best Roku TV operating system, and fabulously low prices, ensured them dominance in the list of best sellers. As known, today Roku TV is superior in many aspects to Android TV, Tizen (Samsung), and webOS (LG). In 2018, the company introduced TCL 6-Series Roku TV, including 55- and 65-inch R617 and R615. This series with the Quantum Dot Technology display and proprietary Contrast Control Zones technology became the sensation of the year. Company has expanded the number of zones from 72 to 96 for the 55-inch TV and up to 120 zones for the 65-inch version, bringing their contrast closer to OLED TVs. At the same time, their cost was consistent with the price of traditional LED TVs. A year later, the company announced the next innovative breakthrough, introducing TCL 8-Series Roku TV with mini-LED Quantum Contrast backlight technology. According to many experts, the successful development of mini-LED backlight can radically reduce the contrast difference between LED TVs and OLED technology. This year, TCL continued to intrigue experts, announcing at CES 2020 the newest next-generation Vidrian "Glass on LED” technology. Read the full article

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The main TV display technologies at CES 2020 Review

The high-tech TVs segment is characterized by the rapid development of innovative technologies. Some of them improve, others lose competition and disappear. For example, such a fate befell the plasma TVs and 3D format. The high dynamics of these processes sometimes complicates the general understanding, causing confusion in terms and concepts. CES 2020 also showed huge diversity in the market. Assortments from market leaders included LED LCD TVs, “quantum dot” LED LCD TVs (QLED, NanoCell, Triluminos), OLED and MicroLED TVs, and TCL TVs with innovative mini-LED backlight technology. In addition, almost all companies offered models with 4K and 8K resolution. Of course, such an abundance can complicate the perception of information. But even a simplified classification can simplify this task.

TV imaging technology

Only ten years ago, LED LCD technology mainly competed with plasma TVs. As known, LCD TVs form an image by controlling the light flow that passes from LEDs backlight through polarizing filters.

Ultimately, LED LCD won the competition, including due to the high cost of plasma TVs. But monopolistic dominance did not last long. Already at CES 2012, Samsung and LG introduced the first 55-inch OLED (organic light-emitting diode) TVs. As known, this technology uses its own radiation of organic diodes, without requiring additional LED-backlight.

Its absence provides several important pros, including perfect black and, consequently, infinite contrast, and wide viewing angles. Indeed, LED LCD forms non-ideal black due to the non-ideal filtering the light output of the LED backlight. In this case, OLED simply does not apply the control voltage to the corresponding diodes, providing absolutely black. Unfortunately, the cost of producing OLED panels was quite high. Moreover, it directly depends on the screen size. And finally, the brightness of OLED panels, which also affects contrast, is significantly inferior to LED LCD. As a result, this technology has become dominant only in the top segment of expensive TVs.

MicroLED

Of course, companies continued to actively develop new directions. As a result, after a few years, the English mLED company introduced a new MicroLED (micro-LED, mLED or µLED) technology based on self-emitting gallium nitride LEDs. The miniature size of these LEDs (5 microns) is the main difference between MicroLED and OLED. Today, Samsung dominates this segment. In particular, at CES 2020, the company introduced the new MicroLED TVs.

Moreover, at CES 2019, the company demonstrated MicroLED modules and their assembly using brackets that are attached to the screen with sufficiently powerful magnets. The diagonal of one module does not exceed 13 inches.

If this technology survives, in the future you will be able to periodically buy separate modules, increasing the MicroLED panel size with the growth of your budget. The technology will also allow the user to disassemble the MicroLED panel into separate modules, turning one large TV into several small ones. Unfortunately, this is not relevant today. Moreover, according to rumors, Samsung plans to enter the OLED segment with a hybrid technology called quantum-dot OLED, or QD-OLED, which combines the idea of using organic light-emitting diodes with Samsung's quantum-dot technology.

Quantum dots

Meanwhile, having beaten off the OLED attack, companies began to actively improve LED LCD technology. As a result, in 2013 Sony already introduced the first Ultra HD 55W900 display using quantum dots technology.

This technology forms an image using an additional matrix coated with a layer of quantum dots. In fact, their production is the deposition of an additional layer using lithography on a matrix of thin-film transistors. Low cost and high efficiency have become its main advantages. Initially, the emission layer used toxic cadmium. In 2015, Samsung improved the technology by replacing cadmium with indium. The monochromatic light of quantum dots significantly improved color reproduction and expanded the color gamut of LED LCD Tvs. In the first few years, Samsung dominated this segment, introducing in 2016 the first SUHD displays based on new technology. In 2017, the company introduced its first QLED-TV.

Of course, other companies also did not ignore the promising direction. Today, LG uses a similar technology called NanoCell, Sony-Triluminos, Hisense - ULED. Thus, today companies use OLED, MicroLED and LED LCD technology. In turn, LED LCD models are subdivided into traditional LED LCD TVs and more expensive “quantum dot” TVs, including Samsung QLED, LG NanoCell, Sony Triluminos and Hisense ULED. At the same time, LG claims to be a leader in the OLED segment, focusing its efforts on reducing production costs. It must be admitted that the company has made significant progress in this direction, presenting in 2018 LG OLED B8 PLA at a price of just over $ 2,000. However, today Sony is not inferior to its competitor by presenting the excellent 4K Sony OLED A8H series at CES 2020.

LED backlight

Improving the backlight has become another direction of development for LED LCD TVs. At one time, companies actively experimented in this direction. For example, the popularity of ultrathin screens provoked the development of edge LED backlight with the placement of LEDs around the screen perimeter. As a result, companies have developed the Edge LED version with LEDs on the sides of the screen and LED Plus with the possibility of local dimming in small areas. Unfortunately, this elegant engineering solution is accompanied by uneven screen lighting. In addition, this technology does not support the local dimming function, which has become one of the main tools for increasing the contrast and color accuracy. As a result, companies focused on developing Direct LED backlight with LEDs behind the screen. Finally, in 2018 LG introduced FALD (full-array local dimming), improving the previous Direct LED backlight technology.

Soon, the company introduced the Nano Full LED version with an increased number of LEDs.

Of course, the accuracy of image formation control directly depends on the number of LEDs, which, in turn, depends on their size. Advances in the production of LEDs have ensured their miniaturization, increased service life, reduced energy consumption and heat output. 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).

Mini-LED backlight

Unfortunately, Mini-LEDs have less brightness compared to conventional LEDs due to the reduction of material to create the light. Of course, an increase in voltage and current increases their brightness, but this dramatically reduces their longevity. But the improvement of mini LED production technology has allowed engineers to expand these boundaries by increasing their efficiency. As a result, TCL’s engineers developed “Quantum Contrast” mini-LED backlight technology based on them.

Of course, mini LEDs are more expensive, but their pros compensate for this aspect. Last year, the company announced TCL 8-Series Roku TV with this technology. Due to the reduced size of the LEDs, the company was able to place over 25,000 mini-LEDs the back of the TV, which are grouped into around 1,000 dimming zones.

In comparison, the 75-inch Vizio Quantum X uses only 485 local dimming zones, and the Sony XBR-85Z9G 8K TV costing about $ 10,000 has 720 zones. Today, the Chinese company continues to actively develop this promising technology. Its advanced version is called the Vidrian Mini-LED. TVs with this technology will use a control semiconductor chip and tens of thousands of microscopic LEDs directly soldered into a glass substrate. Such a panel has a longer service life, providing higher contrast and brightness. Moreover, TCL has invested $ 6 billion in a modern factory for the production of LCD panels using innovative glass cutting equipment.

Conclusion

Overall, CES 2020 has demonstrated a huge variety of modern TVs. The companies presented almost all modern technologies, including traditional LED LCD, OLED and quantum dots (QLED, NanoCell and Triluminos) TVs, MicroLED panels and Mini-LED backlight. All of them are successfully competing and constantly improving, creating an excellent perspective for the harmonious development of the industry. In addition, the companies also demonstrated their success in other directions, including design, sound technologies, AI 8K scaling, game modes, broadcast technologies (ATSC 3.0), new features and modes, etc. Thus, TVs remain an innovative leader in the consumer electronics segment. This video shows the TCL Vidrian Mini-LED 8K QLED TV 6-Series with the Alto 9+ Soundbar at CES 2020. Read the full article

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What to watch on the expensive 4K HDR TV?

The digital revolution has opened up enormous opportunities for engineers to dramatically improve the consumer electronics segment. Projector Mobile Phones with a projector function, pico projectors, 8K TVs and mini-led backlight technology perfectly illustrate this trend. For example, a laser projector of Blackview MAX 1 Projector Mobile Phone provides a vivid and rich image with 2160 x 1080 resolution.

Its 4680 mAh battery provides up to 12 hours of viewing. According to the company, it provides projection sizes up to 200 inches. Of course, this statement causes a great skepticism among specialists. Its real brightness does not exceed 30 Lm. Accordingly, the illumination even for a 19-inch screen diagonally does not exceed 200 lux. Therefore, in reality, a smartphone can provide a fairly high quality only in a completely dark room. And, of course, the size of a sufficiently contrast projection is unlikely to exceed even 100 inches diagonally. Nevertheless, the model rightfully pretends to the status of the first pocket TV. Of course, the high-tech TVs segment is leading in the number of innovative solutions. As known, HDR technology has become one of the main directions for improving image quality. But it requires very precise control of all the pixels on the screen. But, LCD matrices used backlight for this purpose. Therefore, its improvement has become one of the trends of recent years.

Direct-LED backlight

As a result, the development of Direct-LED backlight has dominated. Initially, Direct-LED improved to FALD (full-array local dimming), which ensured perfect uniformity across the entire screen.

Improving the GPU performance in TVs allowed engineers to separately control each array of LEDs (local dimming zone), forming the backlight level in each individual area of the screen surface depending on the content.

Of course, this technology has significantly improved image quality due to color accuracy and HDR. In particular, these models already support HDR10, HDR10 +, and even Dolby Vision. Moreover, Sony has developed an innovative Discrete LED Control algorithm that controls each LED, providing the accuracy required for 4K HDR.

Just a few years ago, TCL TVs 6-series were considered the best from this point of view, using more than 100 local dimming zones. But modern flagships already use from several hundred zones and above. But technology does not stand still. The advent of mini-LEDs has expanded the engineering possibilities. As a result, TCL has developed and already announced for 2020 the 8th series of Roku TV with innovative Mini-LED backlight technology based on the use of Mini-LEDs. Reducing the size of LEDs allowed the company to increase the number of dimming zones to 1000! But its declared price reaches $ 2,000. Thus, fierce competition forces companies to intensively improve image quality using innovative technologies. But many have a little philosophical question about the perfection limits and reasonable sufficiency.

Content

Many people remember the rise and sunset of the 3D format in TVs. Even with a large number of fans, today almost all companies have abandoned this option in their models due to the huge shortage of video content. For various reasons, it was not profitable for manufacturers of 3D content to produce it. The situation with 4K and especially 8K content, and HDR content is very similar to the story with 3D. Today, 4K HDR video content is very limited. All such content can be viewed in a few days. Moreover, the prospects for further development of the 4K HDR video content production are rather vague today. But watching traditional television video content on modern 4K or 8K TV with, for example, Mini-LED backlight, HDMI 2.1 (support for the transfer of dynamic metadata for HDR content), with an OLED or QLED or NanoCell screen, etc resembles a ride on a sports jaguar for $ 50,000 at a speed of 30 km /hour. When watching modern television content, you need to have very sharp eyesight to notice the visual difference between the mid-budget TV and the innovative flagship.

Visualization

All the advantages of innovative technologies are well visualized only when playing certain content. For example, TVs producers often show in the commercials the scenes of a night metropolis with a huge number of small details and contrasting light/shadow transitions.

In this case, the expensive 4K HDR TV really can simultaneously correctly reproduce the color gamut of various scenes. For example, it will correctly reproduce the scene with people in a well-lit cafe (minimum backlight of the corresponding dimming zones), tree branches swaying in the dark (maximum backlight of the corresponding dimming zones) and many illuminated windows in the background (requires high resolution). Medium-budget TV, depending on the settings, will correctly reproduce either the scene in the cafe and the dark background around (due to the small number of gradations of black), or, conversely, a blurry scene in the cafe (too light) and more or less distinguishable details of the surrounding space. But, of course, such complex video content (in terms of video engineer) will constitute an insignificant share in the total volume of television broadcasting.

Conclusion

Of course, the efforts of companies to improve TVs ensures the progress and development of technology. For example, at CES 2018, the 146-inch Samsung modular microLED TV impressed the most imperturbable viewers.

At CES 2019, 260 flexible OLED screens connected together to simulate a waterfall also did not leave anyone indifferent.

Probably, CES 2020, which starts tomorrow at Las Vegas, will also amaze us with fantastic innovations. But huge 8K panels are well suited for demonstrating colorful shows in public places, but they are unlikely to harmoniously fit into a modern apartment. In this context, the acquisition of an expensive innovative TV designed to enjoy watching really colorful 4K HDR video content can be a disappointment due to its huge shortage. In addition, the quality of modern LED LCD models already corresponds to a fairly high level. The high quality Edge-LED backlight in modern TVs from well-known companies, for example Sony, does not provoke spots on the edges (uneven backlight) even with a completely black screen. Of course, such models are perfect for watching ordinary television content. This video demonstrates TCL's miniLED technology. Read the full article

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What is Mini-LED backlight technology?

For several decades now, fierce competition and digital technologies stimulate innovative boom in the consumer electronics segment. First of all, it manifests itself in the segment of high-tech devices, including projectors, TVs, robotic vacuum cleaners, etc. 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. Mini-LED Backlight technology has taken a worthy place in this list. As known, it was developed and first introduced by the Chinese TCL company at CES 2019.

Backlight TV

As known, all modern LCD TVs use LEDs for backlighting. But OLED (organic light-emitting diode) TVs use their own radiation of organic diodes and do not require backlighting. As a consequence, they provide absolutely black and, accordingly, endless contrast, which characterizes the white / black ratio. As known, LEDs emit light when exposed to electricity and are widely used in consumer electronics. Companies usually placed LEDs on the edges (Edge-LED backlight) or behind the screen (Direct-LED backlight). Each LED backlight type has its pros and cons. But modern TVs are increasingly using FALD (full-array local dimming), which is an improved version of Direct-LED backlight.

The rapid spread of this technology was due to the growing popularity of HDR (high dynamic range) technology. In this case, TV dims the LEDs behind dark sections of the image, increasing contrast between the bright and dark areas of the image. Of course, reducing the brightness of each pixel also increases the visualization of contrast. However, this task is technically very difficult for the LCD. As known, LED TV creates an image by blocking the backlight. But the LCD-matrix only partially blocks light, creating a grayer image with fewer black gradations compared to, for example, an OLED matrix. To solve this problem, engineers developed Local dimming technology, which adjusts the backlight in areas of the screen depending on the frame content.

In fact, the further development of this technology has become the basis for FALD. Today, backlight technology is one of the main specs of TV, significantly affecting image quality. Therefore, modern models use several types of backlighting, depending on the class.

Mini-LED backlight technology

Of course, each of the 8 million pixels in a 4K TV cannot have its own LED for backlighting. Actually, each group of LEDs (they are called dimming zones) illuminates tens and even hundreds of thousands of pixels. For example, their average number varies about 100 for ordinary models, and reaches several hundred for top models. Unfortunately, sizes, energy drain, heat generated and cost limits the increase in their quantity. 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, they have less brightness compared to conventional LEDs due to the reduction of material to create the light. Of course, an increase in voltage and current increases their brightness, but this drastically reduces their longevity. But the improvement of mini LED production technology has allowed engineers to expand these boundaries by increasing their efficiency. As a result, TCL's engineers developed "Quantum Contrast" mini-LED backlight technology based on them. Of course, mini LEDs are more expensive, but their pros compensate for this aspect.

Due to the reduced size of the LEDs, the company was able to place over 25,000 mini-LEDs the back of the TV, which are grouped into around 1,000 dimming zones. In comparison, the 75-inch Vizio Quantum X uses only 485 local dimming zones, and the Sony XBR-85Z9G 8K TV costing about $ 13,000 has 720 zones. As a result, more accurate dimming of screen areas significantly increases the overall contrast ratio due to the reduction in the diffuse lighting of dark objects. Moreover, the company can increase the brightness of LEDs without fear of artifacts, providing improved contrast in various scenes.

Conclusion

Of course, this technology cannot compete with OLED or MicroLED, which control every pixel. But, this technology drastically improves the contrast of LED TVs, and may well claim an alternative to OLED technology. Today, TCL offers 8-series Roku TVs, including the 65-inch TCL 65Q825 and 75-inch TCL 75Q825 with this technology. This video offers the announcement of the 8-series TCL TVs with Mini-LED backlight technology. Read the full article