In the seventh year of Xiaomi TV, we saw that Xiaomi TV did not end in tens of millions of sales, but on the basis of already becoming China’s first, began to try to impact the TOP high-end market with super-first-class products. There is such a reply-Xiaomi TV Master Series. Xiaomi TV Master 65 inch OLED is the first OLED screen in the seven years since Xiaomi TV was founded. To know such a TV, the cost of the 65-inch OLED screen alone is almost 5 times that of the LCD screen, and it also needs to add various top-end hardware and software technologies to coordinate and match. This is an area that Xiaomi has not been involved in for a long time. On the other hand, from the liquid crystal, quantum dots, to the exploration process of OLED works today, you can also see that Xiaomi TV has been climbing on the display technology ladder.
Xiaomi said that he did not hesitate to benchmark international high-end brands to make a comprehensive breakthrough in the audio and video experience. He came for the most discerning eyes and ears in the name of “Master”.
Next, before learning the internal and external powers of this “master”, let’s take the Xiaomi TV “Master” and “65” OLED as an example to understand the specific parameter information.
Design & Appearance
The industrial design of the Xiaomi TV Master Series is quite elaborate, and the design in every place is very particular, especially the base design, which is impressive.
Xiaomi TV Master 65OLED” has a physical resolution of 3840×2160, which is what we often refer to as “4K”, and supports Dolby Vision, HDR10+, HDR10, and HLG, giving a stunning picture quality experience on-site.
As the top flagship of Xiaomi TV to date, the Xiaomi TV Master Series adopts a “four-sided borderless full-screen” design with no physical front frame on all four sides to ensure excellent texture while the overall color is just right and does not affect the user’s field of vision. Reached 98.8%. Compared with TVs with LCD screens, OLED TVs are inherently slim and do not require a backlight module. The thinnest part is only 4.6mm.
Part of the back of the fuselage is made of cloth material, which is very visually striking and is also one of the appearance characteristics of the master series that is different from other TV product lines. The base of the Xiaomi TV Master Series uses a glass base + breathing lamp design, and the gradient black texture printed by the silkscreen process is laid on it.
Looking at the interface configuration, 3 HDMI2.1 interfaces + 1 AV port + 1 ATV/DTMB interface + 2 USB ports + 1 Ethernet port + 1 S/PDIF (Optical fiber). Among them, the HDMI 2.1 standard protocol interface supports 4K, 120Hz image quality input, VRR variable refresh rate, and ALLM automatic low delay mode, which directly meets the standards of next-generation game consoles. This is a Bluetooth voice metal remote control that supports the NFC function. The overall button layout and the interaction logic used are still simple and clear. Because it does not work through infrared, it can be used without pointing to the TV in daily use.
On mobile phones, TVs, and other products, the key to distinguishing the technical level and the price is the display or display panel. Any small parameter changes such as resolution, supplier, ranking, brightness, color gamut, etc. may be relevant. cost.
Starting in 2015, Samsung stopped producing OLED TVs, claiming that the market is not yet ready to accept high-cost technology and invest its energy in small and medium-sized OLED panels. With the sharp drop in production costs, OLED TVs have now become the dominant technology in the high-end market, and Samsung is “giving up” huge market space to old friend LG in this field.
As a result, LG Display once became the only company in the world with large-scale mass production of large-size OLED TV panel technology. In recent years, domestic companies such as BOE and Huaxing Optoelectronics have also caught up, and there are already TVs equipped with BOE OLED display panels on the market.
In recent years, the two hottest words in the field of display panels are OLED and HDR (high dynamic range). If the two technical points are combined in one product at the same time, their high-end identity will suddenly appear on the paper. However, there have been many media articles that pointed out that OLED panels that support HDR technology, especially TVs, may have a greater attenuation of their lifetime.
First of all, an obvious feature of the output HDR display effect is the rich light and dark details. Due to the characteristics of self-illumination, OLED has a natural advantage over LCD panels in black (which can not emit light at all), but supporting HDR also means that the peak brightness of OLED panels needs to reach a relatively high level.
Secondly, several key variables that affect the life of OLED include current size, operating temperature, and brightness. According to a 2016 lighting technical document from the United States Department of Energy (DOE), an OLED light-emitting panel with a peak brightness of 8300 nits has a working life of 40,000 hours at 25% brightness (2075 nits), but only 10,000 at 100% brightness. Hour, this reflects a linear relationship.
Based on this, let’s discuss how the OLED panel that supports HDR (assuming it has been in a cool, normal current operating condition) will change in life.
Sony’s 65-inch A1E OLED TV (National Bank 31999 yuan), the peak brightness under the standard dynamic range (SDR) is only 170 nits, but when playing HDR video, the brightest area even has a 700 nit pole The value is 4.1 times higher than before.
However, the conclusion of the DOE just now cannot be directly applied, because playing HDR is a dynamic process, the picture is not uniform in real-time, and the brightness is always changing dynamically. It may be assumed that 700 nits of brightness will occupy 5% of the total time, and the HDR content will be evenly presented. After conversion, Sony’s 100,000-hour OLED panel will lose 20% of its theoretical life because it is only used to play HDR video.
The above is just a theoretical deduction. For the OLED TV, with the attenuation of the sub-pixels and the substrate, in fact, in order to maintain the same brightness in the middle and late stages, the current of the excitation light is increased, and it also naturally increases the heat.
Take LG as an example, its TV panel and mobile phone’s OLED panel are not the same. The former does not have pure red, green, and blue sub-pixels, but white pixels are added with filters. The disadvantage of this method is that it reduces the brightness, so LG fills the white pixels to brighten, which in turn causes desaturation problems.
For OLED panels, only LG publicly promised a lifespan of 100,000 hours in 2016 (that is, 10 hours per day, at least 10 years of service+), but this is at the expense of 50% brightness.
Although there are a lot of cases where HDR has detrimental side effects on the life of OLED, unless you turn on the TV 24 hours a day, or use it 7×24 hours for other purposes, for most consumers, there is no need to worry, it is difficult to encounter To.
Speaking back to Xiaomi TV Master 65” OLED
At present, I don’t know the exact information of screen panel suppliers of the Xiaomi TV Master Series. Judging from the fact that LG Display is about to dominate the huge market share of OLED TV panels on the market and the fact that domestic suppliers have just started, it can only be simply guessed. If there are no other accidents, the Xiaomi TV Master 65″ OLED screen panel is likely to come from LG Display.
The Xiaomi TV Master 65″ OLED on our hand uses a 65-inch 4K OLED screen with a resolution of 3840×2160, a viewing angle of 178°, DCI-P3 98.5% wide color gamut coverage, combined with a 120Hz refresh rate and 1ms ultra-low response time. With 82.9 million pixels, all pixels independently control light, and each pixel can be individually controlled to turn off and on, which can be infinitely close to the absolute black field of 0nit.
According to the official statement, Xiaomi TV Master 65″ OLED adopts True 10bit OLED screen panel, 1.07 billion primary colors display, and at the same time reaches 98.5% P3 wide color gamut. It can also reach the color standard of professional monitors, the typical value of the color standard is Delta E 1.5, Even better than the iPhone 11 Pro Max Delta E <2.14 color standard value.
4K graphics effect test
This test will be conducted by the test tool “4K resolution test chart”, which is based on the principle of TV picture quality display and provides a full range of multi-angle customization for 4K TVs. The experts in this field are members of the Chinese Photographers Association and the national photo. Produced by Mr. Qian Yuankai, a member of the Mechanical Standardization Technical Committee.
The above is the overall test tool. The three pictures test the TV picture from three aspects: sharpness, color accuracy, and wide viewing angle. The test picture has red and blue arrows, blue is 1080P, and red is 4K. Next, we can ignore the blue arrow in the test process to see if the Xiaomi TV Master 65″ OLED meets the test requirements for picture text annotation.
We follow the process to test the clarity first. Looking at the screenshot, you can see that all four lines of Chinese characters and letters in the picture can be clearly identified and displayed, and the delicate effect is also clearly visible. Display devices with poor general performance will lose text details in small Chinese characters/letters during this test. Xiaomi TV Master 65″ OLED successfully passed this test.
This is a color image test. Observe the color distribution diagram and color sphere diagram where the screenshot resides. It can be found that the color saturation of the test result is better. There is no jump or parallel step that is easy to appear in some devices before, and it can display the level. Rich colors.
Let’s talk about it separately: in the color distribution diagram, the display effect of Xiaomi TV Master 65″ OLED meets the text labeling requirements, and the color distribution areas such as R, G, B, Y, C, and M accurately show the ideal shape, and the same is better. The ball picture, the overall color shows a uniform and soft transition.
Looking at the viewing angle test, in this test project, Xiaomi TV Master 65″ OLED has an excellent viewing angle. For multi-family members or large-sized families, viewing from various angles will not be observable The film experience has a significant impact.
We also conducted a grayscale test on the Xiaomi TV Master 65″ OLED. Looking at the details, each level of grayscale can be distinguished without skipping. Of course, if the author has the conditions to upgrade the screen camera device in his hand, and everyone sees You can see more details if the pictures you get are uncompressed on the released platform.
Subjective perception of the OLED screen
The OLED panel used by Xiaomi TV Master 65″ OLED has very different characteristics from the LCD screen in the past. OLED is a panel composed of organic light-emitting diode devices. It uses a very thin organic material coating and a glass substrate. When current passes, These organic materials will directly emit light.
Therefore, Xiaomi TV Master 65″ OLED can rely on the characteristics of OLED to achieve full pixel independent light control. When the screen displays black, you can directly turn off the pixels in the black area to obtain an absolute black field that can be infinitely close to 0nit, giving users a visual impact The strongest is this “absolute black”.
As shown in the figure, this is the absolute black field effect of Xiaomi TV Master 65” OLED in a dark light environment. You can see that the display interface of the TV is completely integrated with the environment, only after raising the camera ISO and adjusting the shutter speed Barely found the outline of TV.
This kind of OLED exclusive absolute black place brings us the experience like “turning off the lights at night”, saying goodbye to the foggy picture quality, and the “true black spot” has increased the contrast to a million levels, the picture has a richer level, The color reproduction is more accurate and presents a more real picture, giving the user an “immersive feeling”.
Taking the picture as an example, Xiaomi combined the characteristics of the OLED screen to add the display screen animation function. The filling of the pattern line edges and internal lines is particularly clear against the absolute black field, and the black part is completely free of brightness overflow. This is an LCD material screen. TV is difficult to do.
TV performance test: MTK 9650 TV chip
Unlike the rugged development process in the field of mobile phone chips, MediaTek entered the field of TV chips very early, and its global shipments of smart TV chips have exceeded 2 billion units as early as last year, occupying a leading position in the industry in terms of volume.
Many manufacturers’ smart TV chips are relatively simple in capabilities and can only support multimedia playback. Wi-Fi and other wireless connection functions require the purchase of additional chips.
MediaTek has always occupied a technological advantage in this regard. With its technology accumulation in the fields of mobile phones, tablets, and the Internet of Things, it has enabled its smart TV chip to achieve a high degree of integration. Its TV chip not only provides multimedia performance, but also integrates Wi-Fi, Bluetooth, and other wireless connection technologies, which saves the body space and development time of the whole machine space and al
so reduces costs.
Even in the years when it was quite frustrating on the mobile phone processor, MediaTek has established a firm foothold in the fields of wireless routing and smart TV. It has claimed to have won 70% of the global smart TV chip market. Sony, Philips, TCL, etc. Is its main customer.
Speaking of Xiaomi TV Master 65″ OLED, it is equipped with MTK 9650 high-end TV chip. This core has not been released by MediaTek before. It should be a new core customized by MediaTek for Xiaomi. At present, the information about this chip is not very sufficient.
According to the information provided by Xiaomi, we can know that MTK 9650 uses a 22nm process, quad-core A73 CPU architecture + Mali G52 MC1 GPU architecture + 1T computing power APU.
At present, a MediaTek MT9652 can be found on the official website of MediaTek. It is more like the prototype of MTK 9650 in terms of naming and parameter specifications. Both are composed of 4 A73s in terms of CPU, and there is a small difference in frequency, but for the TV, even cutting off the two A73s is enough, not to mention adjusting the frequency slightly.
Decoding, MTK 9650 is similar to MT9652, supports decoding 4K120fps video and part of 8K video, and even has an additional DTS-HD in audio decoding than MT9652. In memory, it theoretically has the same 3G Max and memory bandwidth as the MT9652. Next, we will find out through actual measurement.
Thanks to the underlying layer and basic algorithms provided by the chip, Xiaomi TV Master 65″ OLED supports dynamic contrast, local contrast, dynamic color, and other image quality optimization functions. The effect is very obvious when testing 4K pictures and videos. After taking effect, the picture will be Without the previous gray feeling, the color saturation and clarity have been improved.
Motion compensation is undoubtedly the biggest bright spot this time. With the help of the chip’s algorithm, Xiaomi TV Master 65″ OLED can perform frame insertion processing for pictures below the target frame rate when playing video resources, by automatically identifying the picture content, When the picture changes to meet the two conditions of short-distance movement and regularity, frame insertion will begin. After processing, the picture will become smoother, which is equivalent to improving the dynamic vision. Generally, observing objects moving at high speed will be more Clear.
For example, the most common mirror images in film and television and the “God perspective” in football games are the scenes that most easily trigger MEMC frame insertion. This type of video is often limited to 30 frames or 24 frames, and playing on a 120Hz screen will have a certain sense of lag. At this time, with the blessing of MEMC, the change of fluency is obvious.
Through slow playback, you can see the effect of motion compensation more clearly. The frame rate of the screen played on the Xiaomi TV Master 65″ OLED is significantly higher, and the original video screen will have a significant pause due to insufficient frame rate.
HDR effect of the Game Console Connection
Of course, the TV is at home. In addition to watching TV programs and movies on a daily basis, there is a need to use TV as a screen for games.
Since you want to use it as a screen for games, you have to mention the input delay of the TV. After plugging the host into the HDMI 3 interface, it can automatically recognize the device and start the game mode. The variable refresh rate can be synchronized with the signal output source to change the frame rate, reducing the delay, freeze, and tearing of the picture.
Xiaomi TV Master 65″ OLED automatic low-latency mode can automatically set the ideal low-latency automatic low-latency mode to achieve smooth, no-lag, and uninterrupted viewing and interaction. Whether it is a fighting game or a tight racing car, the automatic low-latency mode and The variable refresh rate makes the gaming experience even better.
Next, use PS4 Pro to connect the Xiaomi TV Master 65″ OLED to see how it supports the game console and how the picture quality is. After setting the HDMI connection mode to HDMI 2.0, the PS4 Pro correctly recognizes and turns on the HDR mode. Compared with the SDR mode, its color performance is significantly improved.
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In the field of smartphones, especially in the high-end market, OLED has largely eliminated LCD and become the new overlord of screen panels. Notebooks are also increasingly using OLED. In the field of large-screen TVs, the proportion of OLED is also Improve steadily.
Although the turn-on rate of TVs is not as good as before, with the continuous upgrading and iteration of display technology, smart home life is becoming more and more popular. TVs are playing an important role in their home life and entertainment smart hub, and are integrated into the home environment. According to data from Aoweiyun.com, the global market of OLED TVs increased by 21% in the first half of 2019, while in the whole year of 2018, the overall growth of domestic TV market sales was only 0.5%, but OLED TVs reached 47%.
Compared with traditional LCD TVs, OLED TVs have outstanding advantages such as ultra-wide viewing angle, perfect shading, true colors, healthy eye protection, and flexibility, and flexibility. They are generally regarded as “next-generation display technology” that surpasses LCD, and the form is also in full bloom. Wallpaper, rollable, foldable, transparent, spontaneous sound, double-sided display, and so on.
Constraints for OLED TV sales increase include price, brand, and panel supply. As the consumer awareness value of OLEDs improves, after TV manufacturers like Xiaomi enter the market, the price will gradually get closer and closer to the desserts that more consumers can accept- Xiaomi TV “Master” 65″ OLED has already The price was lowered to 12,999 yuan, which intensified competition in the OLED TV market, and it was also possible that the average price of the OLED TV continued to decline.
As more and more OLED production lines are put into production, the bottleneck restriction on panel supply will also be lifted. The era of information flow requires large-screen media and a large number of display devices. Mobile terminals such as mobile phones are more difficult to bring better information streaming services. Watching with mobile phones can’t feel the picture quality advantages of watching with TVs, so TVs cannot be replaced. As a new generation of display equipment, OLED TV has unique advantages in picture quality and other aspects.
With the joint effect of many factors, the OLED TV market is bound to be accepted by more users. Consumer demand is bound to expand, and the larger range of OLED TV products currently seems to be only a matter of time.
Of course, for Xiaomi, the high-end image of OLED has long been popular. After the exploration of liquid crystal and quantum dots, Xiaomi’s launch of OLED TV has the intention of raising the overall brand image of Xiaomi TV. The formation of brand potential is beneficial to The mid- to high-end market, which has long dominated itself, continues to consolidate.
Back to Xiaomi TV Master 65″ OLED itself, even as a TV product that hits the ultra-high-end market, there is still no shortage of materials in Xiaomi TV “Master” 65″ OLED: 65-inch 4K OLED screen, resolution 3840×2160, DCI-P3 98.5 % Wide color gamut coverage, combined with 120Hz refresh rate and 1ms ultra-low response time. With 82.9 million pixels, all pixels independently control light, and each pixel can be individually controlled to turn off and on, which can be infinitely close to the absolute black field of 0nit.
Deeply customized independent APU neural network computing unit, which can intelligently analyze, identify, and optimize pictures-AI dynamic scene recognition, frame-by-frame synchronization adjustment; 22 image quality algorithms, color, clarity, contrast, improve image performance in all directions force.
In terms of performance, it is equipped with MTK 9650 high-end TV chip, using a 22nm process, quad-core A73 CPU architecture + Mali G52 MC1 GPU architecture + 1T computing power APU, equipped with 3GB+32GB memory, to ensure smooth operation, but also provides users with large-capacity storage space.
In terms of sound quality, it has a 3D panoramic sound system, a 9-unit speaker set, 65W ultra-high power hardware configuration, passed Dolby Atmos 2.1.2 certification, and is compatible with all Dolby formats (including 5.1 and 7.1) sources. At the same time, it is equipped with an AI Master sound quality engine to provide an AI algorithm blessing for the overall speaker.
Xiaomi TV Master can be said that from picture quality to sound quality to many details, you can think of the Xiaomi TV Master 65″ OLED, which is satisfied, whether it is “external work” or “internal work” has reached the current top level. If you want to buy a top-end 65-inch OLED TV at a low premium, it is an excellent choice.