[Bestbuy618 Home Appliance Channel] For the past five years, OLED TVs have been promoted in the Chinese market, but there have been issues such as typical residual shadows, screen burning, lack of brightness, poor dark details, color inaccuracy, and so on. Hisense released its first OLED TV A8 in March 2019, which came late with three heavyweight abilities – six residual shadow protection technology, dark field detail prompting, and color precision design, strokes for the OLED TV pain points. Hisense A8 TV release is to bring us a “better OLED”? These OLED common problems really have to solve? We will take you through the 6 main issues, a comprehensive understanding of Hisense A8 TV.
Q1: How to solve the ghosting problem? Q2: How much is the dark detail performance improved? Q3: How is the color tuning and accuracy? Q4: Is the brightness enough? Q5: What is the level of Silver Screen Sound Field Pro?
Q1: How to solve the residual image problem? Because the problem of ghosting requires a long time (at least several thousand hours) of testing, we can only talk about the technical principle of Hisense A8 TV’s anti-hostile shadowing here. The problem of ghosting has always been a nightmare for OLED TVs, which simply means that displaying a certain still image for a long time will leave irr There is no other way to solve the ghosting problem other than replacing the OLED screen. The key to avoiding prolonged display of static images is to avoid prolonged display of static images. Hisense has created six targeted technologies, the first of which is LEA-edge table label monitoring and adjustment.
The first is LEA-edge desk marker monitoring and adjustment, which is a subtle pixel shifting and brightness adjustment of daily static icons like desk markers to prevent excessive pixel life consumption in fixed positions. The second is local brightness adjustment of static content under dynamic video. For example, during the two sessions of the meeting, the screen of the live TV broadcast of the leader’s speech, the table is usually fixed, and the characters will have different amplitudes of swing, for this kind of elements that are not the main body of the screen and are still, you can do local brightness adjustment to prevent the residual image.
The third feature is the ability to adjust the brightness of a static image. When the TV content is a still picture, Hisense OLED TV can be adjusted by brightness dynamic brightness to ensure the effect of the picture while reducing pixel loss. Fourth, OVERSCAN pixel displacement technology can be used to ensure the effect of the picture while reducing pixel loss. The same picture elements can be constantly adjusted through the pixel displacement technology to color rendering pixel units if they are fixed in a certain position for a long time, which is the biggest waste of organic pixels.
Fifth, OFFRS function, and sixth, JB function Both are routinely excited by the current OLED organic light-emitting body in order to “revive” the long display after pixel decay and passivation. The difference is that the former is a short period of small doses of current excitation, whereas the latter is a long period of large doses of current excitation. Summary: In order to prevent residual shadows and screen burning on the OLED TV, Hisense A8 has done enough to prepare, from software algorithms to control current strength, to avoid prolonged display of still images, greatly reducing the probability of residual shadows.
There is a dark scene before the start of the halftime show in the 4K UHD Blu-ray movie “Billy Lynn’s “Middlemarch” that many OLED TVs are unable to render in full detail. The two charts above clearly show the differences between televisions. In the same camera parameters (iOS, shutter time, aperture size) under the screen shot picture, the first picture, you can see the color of the soldiers standing in the dark clothes, outline, dark details excellent performance; the second picture is only a black, a significant loss of picture information.
In a large dark field situation, Hisense A8 can clearly see the details of the table and chairs behind the model, which the other OLED TV is unable to present, resulting in a lack of picture content; likewise, in the frame above, the TV with good dark detail performance can restore the clothes on the soldiers in the back row. Check to see if your OLED TV can see these details. Summary: Hisense uses a unique detail compensation algorithm restoration technology, as well as regional gray detection and high frequency area detection to adjust screen detail in real time.
In actual use, it plays an important role in presenting the picture’s dark details. Q3: What about color tuning and accuracy? Color performance is a very subjective issue, and the best color performance should be able to faithfully restore the image captured by the creator. In terms of color style, Hisense A8 is a full-bodied and heavy type, making full use of the advantages of wide color gamut.
It is worth mentioning the HDR effect, which, with the addition of ultra-high brightness, maintains rich details of light and darkness while reflecting accuracy in color when expressing color-rich scenes.
The reds and yellows are interwoven with too much natural color in the image above, and there is good detail in the highlighted background and foreground in backlight. Furthermore, the A8 brightness uniformity of up to 94 percent, far beyond the LCD TV 50-70 percent, but also better than many OLED TV. Q4: Is the brightness enough? Because OLED uses organic materials, the aging speed compared to inorganic materials LCD is much faster, long-term high brightness display will further accelerate aging, so the early OLED TV looks far from LCD TV so bright.
At the same time, the brightness will also affect the contrast ratio. In theory, the contrast ratio of an OLED tends to be positive infinity.
In fact, the contrast ratio on line is determined by the brightness of the OLED TV. The higher the brightness, the higher the true contrast ratio and the better the natural result. We tested Hisense A8 TV with SM208 screen brightness meter and measured HDR peak brightness and SDR sustained brightness under 2 percent, 10%, 25%, 50%, and 100% white signal windows.
(For more information, see the table below.) The maximum brightness among them is 946 cd/m2. This concept is brighter than most LCD TVs and ranks in the first tier of OLED TVs we’ve tested, slightly higher than the Sony OLED TV A8F.
So, when you watch the Hisense A8 TV, you get a sense of how bright a flagship LCD TV is. Why is brightness important? Aside from making the eyes feel open, it is also necessary for HDR; HDR cannot be discussed without high brightness. Ordinary entry-level TVs only have 300-400nit brightness and can only claim to support HDR decoding; achieving HDR effect is another matter. The above are the results of the instrument test; we specifically found a demonstration of HDR1000, which means that the peak brightness of the TV is close to 1000nit, in order to better restore the video content.
In this scene, most of the other OLED TVs previously tested performed at 500-600 cd/, with the Hisense A8 taking a significant lead. Allowing the light to appear as dazzling as it does in reality, the overall picture will only form a strong contrast between light and dark. Summary: Hisense A8 TV has a peak brightness of 946 cd/, which is ahead of most OLED TVs and even stronger than most LCD TVs, providing an excellent hardware basis for HDR picture presentation.
Because of the “screen sound field,” Hisense A8 can indeed present the sound of the feeling of pounding, if sitting in front of the TV, can feel the sound according to the different content of the screen change the sound location (the actual sound unit in the middle of the lower).
It is worth noting that the Hisense A8 has a particularly good vocal performance, with a clear midrange, a high frequency that is tough and flexible, and a high to the highest point that can still be easily heard but does not produce a change in sound. In terms of bass, Hisense has a separate built-in woofer, 65-inch bass can dive down to 60Hz, 55-inch bass can dive down to 80Hz. Overall, high school and low frequency performance are very balanced.
Summary: the screen sound field improves sound quality as expected, human voice performance is excellent, listen to pop music, watch TV series, and feel very good. The A8 comes with speakers that can already provide a good sense of sound immersion in a small space like a living room.
Q6: What is it like to play games on OLED TV? There are two most important things to consider when playing games on TV: latency and picture smoothness. The latter, in particular, is where OLED excels. First, we tested the latency of the A8 in 4K 30p signal, by calculating the time difference of the stopwatch display, the latency is about 23ms, close to the Sony A9F performance, which we called excellent.
We played a bit of Live Soccer 2018. However, because of its inherent responsiveness, OLED is the best partner for console games with HDR effects and smooth, dragging-free gameplay.
Every run, turn, and stop is flawless, and the arc drawn by each ball is crystal clear. When the game mode is enabled, the color of the court will be enhanced; some claim that OLED TVs will also exhibit trailing when watching movies. In fact, the majority of it is due to the captured video itself dragging.
Not only the game, but also other movies with artificially accurate frames are displayed on the OLED with exceptionally clear and smooth images. Ps: Hisense A8 TV unboxing and appearance Unlike the familiar “ULED” wording, this time the box is concisely printed with a large “OLED”, from now on, Hisense in the display technology ULED, OLED, laser troika driving side by side.
The machine is very heavy, the screen is extremely thin, the installation process of three people carefully with the completion.
The 65-inch screen with ultra-narrow bezel has a strong visual impact from the front, and the body’s thickness is only 3.86mm when combined with the metal frame. The base features the new whale all-metal design, and the logo and infrared receiving and pickup devices are located on the left side of the screen. Hisense A8 supports far-field sound pickup, has the same simple back, and a new remote control design.
Summary: Hisense is a latecomer in OLED TV, but with 20 years of OLED technology, the first official market-oriented OLED TV A8 performance has been incredible enough. Ultra-high peak brightness, excellent dark details, wide color gamut, and excellent color accuracy, with six anti-darkness technologies working in tandem to address current OLED TV consumer pain points, demonstrating the typical late-stage advantage.
Of course, as with any first-generation product, there is still room for improvement in terms of sound quality, appearance, and design.