Extraordinary picture quality extraordinary cool open T55 OLED TV depth evaluation

The first domestic Internet OLED TV test

OLED, as a display technology in the future, has received extensive attention from the industry and users. However, in the increasingly hot Internet TV field, no one company has applied this technology. In this year's AWE China Home Appliances and Consumer Electronics Show, Cool open is for us to make up for this regret, brought its own new OLED TV products, cool open T55 OLED. This product also became the first OLED TV in China's Internet TV industry. This exciting product is also very eye-catching on this AWE.


Why OLED is the future display technology? In fact, OLED is not only a display technology innovation, but also can greatly enhance the TV display. Because of the self-luminous nature of each pixel, OLEDs can make the picture quality more outstanding. Especially in the presentation of the black field, OLED technology can make the pixels directly off and not emit light, so it can display a deeper black. At the same time according to the contrast formula: Contrast = white field brightness / black field brightness, when the brightness of the black field is infinitely small, the contrast will naturally be infinite, achieving high contrast. The OLED display technology also has a 0.001ms response speed and a very wide bright color viewing angle, which has obvious advantages over the liquid crystal technology.


Cool open T55 OLED TV debut AWE2016

Cool open recently introduced T55 OLED version uses a curved screen, so the design is because the curved screen can meet the human eye retina surface structure, can make any point on the screen and the eye distance equal, regardless of the image appears The center is still the edge, and the dimensions are exactly the same. Second, the surface design can also focus more on the light, so that it can display a brighter picture quality, and make the picture quality and color appear more vivid. Third, the uniqueness of surface design is that it can provide users with a strong sense of immersion. To a certain extent, OLED greatly enhances the picture quality performance, and the surface display is the catalyst for shocking visual experience, allowing users to enjoy a visual feast at home.


OLED can bring even better black performance

In the past when everyone mentioned OLED TVs, the first reaction was an expensive price. However, the cool-on T55 OLED TV set the price of the product to 9999 yuan, which also marks the OLED TV officially entered the era of million yuan, is undoubtedly an exciting news. Then the question will follow, behind the price of 10,000 yuan behind, cool open T55 OLED TV is not worth the consumer to buy? Our Zhongguancun online evaluation room is also the first time to get this product, for everyone to make a comprehensive interpretation.

Stylish fuselage elegance: unique walnut base


The first time I saw the CoolTV T55 OLED TV, I could feel that Kukai had made a lot of changes in the design language. It was totally different from the previous design style of CoolTV. First of all, from the color point of view, the black screen to the dark gray linen panel, and then to the brown walnut base, from top to bottom to complete a very good transition, a strong sense. This match is undoubtedly in line with the high-end positioning of the product, so elegant design does not lose the sense of science and technology.


Cool open T55 OLED TV front


Cool open LOGO


Cool open T55 OLED TV walnut base

The material of the linen has already been reflected in the previous cool open T55, this design still continues to the T55 OLED version above. At the same time, Cool Open has added the brightest base of walnut wood, wooden base plus a full sense of the technical surface of the ultra-thin screen without a sense of violation, but it has brought a stronger affinity. We can also see the words “T55 OLED” engraved on the wooden base from the test picture. It is reported that Coolopen will provide customized services in the pre-sale. Each user can engrave his name on it and build it. Become a private custom product.


Cool open T55 OLED TV side


Cool open T55 OLED TV frame

Cool open T55 OLED TV uses ART5 frameless design, the border of the entire screen is only 5.75mm, can bring a broader vision and more excellent on-site effect. At the same time, we can also see that the screen has a slightly backward tilt angle, which is also the design of the acoustic transmission. From here we can also see that Kukai's control of details is still in place. The screen of the TV adopts LG original ultrathin OLED screen, the thickness of the fuselage is only 7mm, this is the consistent advantage of OLED technology.


Cool open T55 OLED TV back and details

The cool back T55 OLED TV uses an all-metal back panel on the back and is built by Apple Unibody's one-piece molding process. Such a process can bring about higher strength and make the body less susceptible to deformation. While maintaining slimness, provide more solid support. At the same time, an independent six-tone cavity is also configured at the bottom, and a frequency division ratio of three is achieved using a combination of electronic frequency division and physical frequency division. At the same time, the rear bass also brings more shocking sound effects.


Cool open T55 OLED TV interface

In terms of interfaces, CoolTV T55 OLED TV provides users with three USB interfaces, including two USB2.0 interfaces and one USB3.0 interface. At the same time have two card slots, respectively SD card and CA card. The bottom is basically the standard interface of the TV, including a cable port, a fiber optic interface, three HDMI interfaces and AV input, analog audio output, digital audio output and cable TV interface. Overall, it can meet the video and audio needs of users.


Cool open T55 OLED TV remote control

As for the remote control of the CoolTV T55 OLED TV, it still retains the cool and consistent design. Carefully designed child locks, even if the children in the home to play with their hands, the battery can not be removed. At the same time, the battery life of the remote controller is also very long and can be operated more than 60,000 times. The white remote control looks very clean, and feels quite good at the same time. The function keys are simple and powerful.
System full upgrade: fast boot fast update

On the system side, CoolTV T55 OLED TV uses the latest CoolOpen System 5.0. Users who are familiar with Coolopen System 5.0 know that it has the characteristics of fast boot, fast operation, and fast update. These features are also reflected in CoolTV T55 OLED TV. Cool open system 5.0 adopts modular classification. The most intuitive experience is that the classification is concise and clear, the operation path is reduced, and the direct access is simple. UI interface design is also very simple, the entrance is simple and straightforward, there are many categories at a glance, no need to switch pages. The homepage is developed using the cocos2dx engine. The startup speed is fast. Press the homepage in any scene to achieve the second effect.


Cool open system 5.0 main interface

The boot speed of the TV is one of the indicators for measuring the optimization of the operating system. The Cool Open System 5.0 powered by the Cool T55 OLED TV has been greatly improved in standby startup and program startup. Standby startup time is basically between 2 and 3 seconds, and the program startup response speed is very fast.


Multitasking management features

The latest CoolOpen System 5.0 system has a multi-tasking management function. After clicking the remote control to start the homepage in any interface, clicking the start button again will bring up the task management bar. At this time, all the running interfaces will be presented. Out, click the up arrow key or OK key to close and switch applications, just like iOS, this feature is still very practical.


TV school desktop

In addition to the standard homepage, Coolopen System 5.0 also provides users with a TV school desktop. The TV school desktop can add frequently used software to the desktop according to the user's habits. Personalize custom add modules to use your TV as well as your own desktop. Users only need to press the "Cool" button on the remote control to reach the TV desktop directly. If you're a lazy person, it's enough to just put all the apps you need here.


Two different input methods

The new Coolopen 5.0 system is still constantly being optimized and upgraded, and closed beta versions are released every week for user experience and upgrades. At the same time Coocaa also allows users to participate in it, based on the user's suggestions or use habits to improve. At present, the new system uses the input method of the Jiugongge and full keyboard in the search engine, and users can choose according to their own usage habits. Compared to Jiugongge, the author believes that the keyboard is more convenient, which also avoids the switch between letters and numbers.


History playlist

The cool open system 5.0 also has a very intimate setting, which is that it will automatically save the user's previously watched video and record it. If you want to open the history bar directly when you want to watch it again, you can call up all the previously watched videos, and the progress will be preserved and very user-friendly.


TV app

Through the system menu of Tektronix T55 OLED TV, we can also download TV App on mobile phones, which can support IOS, Android and other mobile terminals. By sending us on TV, we can order the video we want to watch, so that the video on the mobile phone can be directly delivered to the TV. At the same time, we can control the TV through the mobile phone.

Cool open T55 OLED TV users can refer to the tutorial: Cool open T55 OLED installation method Install sofa housekeeper to achieve third-party application extensions.


Rich in Content: Integrate iCNTV with Tencent Video

Cool open T55 OLED TV with iCNTV and Tencent video for resource integration, TV can be directly logged in through the QQ number, for the hands of more than one QQ era is still very convenient and fast. Cool open and Tencent video in the content interaction to achieve strong cooperation, the purpose is to bring users more high-quality resource content. The content mainly covers six modules, which covers all aspects such as film and television, games, music, education, shopping malls, and travel, and is a content service platform specially designed for geek life.


Video Resources


Main video resource classification

Cool open T55 OLED TV coverage of film and television resources is very comprehensive, the current film content has exceeded 4,000, like this year's release of the New Year is good, three dozen bones are appearing in the movie list. The contents of the TV series are equally rich. There are no regional restrictions in the mainland, Hong Kong, Taiwan, the United States, and South Korea, and the Beijing TV TV hit TV series Tianlun can be updated simultaneously. In terms of variety shows, the whole network alone broadcasts good Chinese voices in the fourth quarter, and other variety shows are equally complete. The most important thing is that CoolTV T55OLED TV exclusively introduces HBO's finest American TV series, which is the game's exclusive broadcasting platform for the global hot TV drama right.


Education Center

Education is an eternal topic. In the Cool Education System 5.0 education center, children are provided with a learning space, and it is also an encyclopedia with vast amounts of information. From infants and young children all the way to the career search encyclopedia, they are tailored for real people of different ages. At the same time, parents can also watch educational materials for children here to help children grow better. Basically all of this rich content is free content.


Cool open Mall

Coolopen Mall provides users with a lot of product information, and will choose the most cost-effective products. Cover all the common shopping platform, such as Jingdong, Suning Tesco, Tmall, Gome Online, etc., to achieve a convenient and convenient shopping channels. At the same time, in the health center, it provides advice on the health of users, and can also provide appointments for free registration services at nearby hospitals.


Let's go


Game screenshots

The Cool Tournament platform integrates popular online games and stand-alone games. Some classic games can also be found. Games are classified and recommended, and the simple and clear design interface allows users to quickly find the games that they want to download. At the same time, it also has a variety of gameplay, handles, remote controls, somatosensory props, etc. are supported, and there are also instructions that can be operated below the game icons.


Music centre

Kukai Music Center is a music platform. The page is designed with different categories and recommended content. No matter which style of music program you like, you can search for it on this platform. At the same time, it also provides users with a large amount of lossless music. The K song platform also allows users to sing and sing. This high-quality music plus an independent six-chamber audio system on the TV can provide users with high-quality audio. Enjoy music.


Tourist Center


Cool travel


Cool Travel Information

In the tourism center, users can search for a good place to play around according to their area, and also can search for popular tourist areas in China, refer to travelers' travel tips and strategies, and can also purchase corresponding tickets. What's even more interesting is that users can upload their own photos and moods at any time during the journey to the TV in their home and share the fun with their loved ones. These contents bring a lot of convenience to users who want to travel.

At the same time, this cool open launched a new custom travel project cool open travel, cool open this extended service can give users a different feeling. It will plan the user's itinerary based on the current hot spots, allowing users to experience the charm of the movie more closely to the filming location. Cool open this extended service is still very creative.

Objective Instrument Test: Excellent color performance

Cool open T55 OLED uses a new generation of organic self-luminous material OLED, each pixel is independent light, breaking the original LED technology requires backlight to light, OLED TV RGB color signal directly by the OLED diode display, so with self-luminous characteristics, At the same time, the OLED TV display screen has a large viewing angle and can save power. The traditional LED TVs still use LCD LCD screens, and the backlight uses white LED lighting. Based on this, OLEDs have infinitely close to 100% pure black color. In the black screen, all self-illuminating sub-pixels collectively sleep, enabling true black and brighter colors.


BM-7A Test Instrument

Here we test the color and basic performance of the CoolTV T55 OLED TV. The instrument used in this test is the BM-7A luminance colorimeter produced by Topcon to measure the color coordinates of the cool-on T55 OLED in different colors, and according to The corresponding values ​​are calculated for contrast, color gamut, color temperature, color saturation, and corresponding color characteristic plots. Before carrying out this test, we first let the machine work normally for one hour and restore it to the factory mode. The entire test environment is performed in the darkroom.


Cool open T55 OLED TV color characteristics

After our tests and calculations, the white point temperature of the CoolTV T55 OLED TV is 8600K, and the standard color temperature of the 7000K is relatively cool. The theoretical value of the OLED screen can reach more than 100%. In the actual test, the NTSC color gamut of the Coolopen T55 OLED TV has reached 103.26%. In terms of contrast, since the OLED screen does not emit light when the black field is present, the contrast ratio can reach infinity, which has a distinct advantage over the LCD TV. From the above figure, we can also see that this LG original OLED screen is very accurate in terms of color performance and saturation is also very good.

Compared to the old-fashioned LCD technology, the OLED display technology of the next era is difficult to resist the physical advantage. The self-illuminating, pure black screen features, the unresponsiveness of the delay, and the vivid color expression, can easily exceed 20% of the liquid crystal in the color gamut. At the same time, because OLED is a dynamic power consumption, the LCD is a constant power consumption, so OLED TVs also have obvious advantages in power consumption control. Cool open this application of OLED technology in the product, is a very smart approach.

Detailed performance: OLED natural advantages

In terms of static testing, we will test the quality of the T55 OLED TV, screen resolution and tone reduction. Before the test, we have restored all the values ​​of the TV to the default. This shows the most primitive state and can display its display capabilities most realistically. Let's look at the specific test chart below. Note: Although CoolTV T55 OLED TV has the highest resolution of 1080P, it can well resolve static 4K test pictures, so it can still be used as a test standard.


Resolve test chart

Although it may not reach the 4K standard in terms of clarity, it is still able to display the upper left corner English alphabet and man perfectly in the 1080P environment, and it can reach the blue arrow, which is the qualified standard. The part of the test color line also reached excellent standards, with clear boundaries and distinct colors. Black and white lines are normal.


Level restoration test chart

In the level of reductive testing, CoolTV T55 OLED TVs performed outstandingly. The effect may not be obvious due to camera exposure and other reasons, but in our actual test, the 64-level and 32-level gray scales can reach the optimal interval, the levels are obvious, and the gray levels are clearly visible. Both the brightness and the contrast can achieve excellent standards. The player's 21st-level grayscale performance is normal, there is no case of jumping and ordering, and the grayscale is overly smooth and soft.


Static picture

For the test of image resolving power, the color rendering ability of CoolTV T55 OLED TV is more prominent, yellow and red appear full and over-natural. The details of the black mountain peak are also well preserved, which is the advantage of the OLED screen. The white smoke emitted from the house is also very soft. From the nearby houses to the peaks in the distance, there is also a very good transition and the overall performance is excellent.

OLED this innovative technology has always been plagued by the problem of high yields and costly, but as the technology continues to mature, it has been very successful. There are more and more companies that use this technology. However, for the technology itself, many consumers may find it difficult to understand its advantages. This time Coolo opened the technology for the first time on Internet TV and has excellent performance. It is believed that many consumers will be impressed.

Video resolution test and final summary

Cool open T55 OLED configuration with a 1.45GHz clocked 4-core CPU, 6-core Mali 450 GPU, 2GB memory, dual-band WIFI, which is the current TV in the medium configuration. However, compared to the previous T55 configuration - CPU Cortex A9 1.8GHz 4 core, Mali 450 GPU 8 core. It is worth noting that the Coolopen T55 OLED is also equipped with MEMC motion compensation chip, which helps the experience of action movies and sports events. And uses a wealth of audio and video decoding technology, can decode H.264, H.265 and other encoding format video.

However, the only thing that is very regrettable is that the Cool Open T55 OLED is not a 4K screen, but a 1080P screen, which obviously cannot represent the most advanced picture quality at present. However, for the 55-inch screen, 4K ultra high definition really makes sense? And for the 4K film source, it is very rare at present, so it is not the hardware itself but the content that determines the picture quality in many cases. Here we first look at the dynamic video performance of Cool Open T55 OLED TV.


High-speed dynamic video


High-speed dynamic video

First of all, through the motion video screenshot of a moving train, even if the details on the train are zoomed in, the “2816” figures can still be clearly displayed, and the outline of the train is also very clear. Let's look at the second test of the dynamic video capture. Birds flying at high speed over the lake have no smearing or ghosting. The details are also outstanding. In the course of the test, we also watched video resources for several groups of sports events. There were no signs of stalling or smearing.


Video test chart


Video test chart


Video test chart

Through our actual testing, the CoolTV T55 OLED TV is equally satisfactory for video decoding capabilities. Every video has a good fluency during playback, there is no case of Caton, and the overall picture is excellent. Decoding H.265 video resources is just as good. Compared with H.264, the biggest advantage of H.265 is that it can transmit higher-quality network video under limited bandwidth. It only needs the original half bandwidth to play the same quality. Video.

Written at the end:

Cool open this full introduction of OLED technology, is clearly in the capture of high-end users, it is bound to completely overturn the Internet TV market environment. Utilizing the leading edge of OLED technology, will continue to ferment television hardware and Internet content, provide users with different viewing experiences, powerful color performance and unparalleled black-field performance to bring about the "sub-era quality experience" To be killed, there is no doubt that OLED TVs will "re-define high-end television."

It is not hard to imagine that the selling price of 9999 yuan will undoubtedly have a huge impact on the OLED market. It also shows that OLED intends to enter the mainstream TV market with ambitions. With the follow-up of OLED products from other TV brands, the market price of OLED TVs will be at that time. Will continue to explore, taking into account the OLED display technology has many advantages over the physical characteristics of liquid crystal technology, it can be predicted that OLED will sooner or later have to change the life of LCD. Of course, this will take some time, but this time may be earlier than everyone expected, just as no one could have imagined that OLED TVs have now fallen below the million mark.

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