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A high refresh rate and a high sampling rate are good screens? Don't let the parameters fool

YH 2021-02-22 09:39:12

Many people buyCell phoneAt times, the screen is a very important factor. Everyone is accustomed to a more transparent large screen look and feel, a smoother hand feel experience, and of course it is more eye-friendly, even if you stare at the screen for several hours a day, you will not feel uncomfortable.

But the price of mobile phones is high and low, and the screens naturally have advantages and disadvantages. And how to judge the pros and cons of a screen, looking at the parameters has become a golden rule when users choose a good screen. Before the rise of high-swipe screens, people tended to pay more attention to screen resolution, size, material, etc., and with the gradual rise of high-swipe screens, high refresh rate and high touch sampling rate have become important indicators of a "good screen" .

It is true that products with 90Hz, 120Hz and even higher screen refresh rates are indeed attractive and easy to attract the attention of consumers. However, as the prices of mobile phones equipped with high-brush screens and high-sampling rate screens continue to drop, many People are starting to wonder again, why everyone has the same refresh rate and sampling rate, and the flagship screen experience is still higher than that of a cheap one thousand yuan machine?

①The top-notch one of two parameters does not mean that this is a good screen

First of all, we need to realize that hardware parameters are still an important basis for everyone to intuitively judge the quality of a screen. But a good screen integrates many factors. One or two top-notch parameters do not mean that this screen must be brilliant, and we need to look at it with a more comprehensive view.

For example, when an OLED screen has 2K resolution, supports 120Hz high refresh rate and 240Hz high sampling rate, and supports 10bit color depth and HDR10+ display, even if we don’t look at other things, we can roughly conclude that this is a good screen. , But if a mobile phone always emphasizes that it is equipped with a high-brush screen, and does not mention other parameters, then be careful, which shows that other aspects may not be ideal.

OPPO Find X2Series screen parameters (picture source official)

It is well understood that when manufacturers promote their products, they will definitely use their strengths and avoid weaknesses, saying only the good ones, not the bad ones. This is determined by the market. When making choices, users also need to uphold a rational, non-blind purchase perspective, and look beyond the appearance to see the essence in order not to be fooled.

2. Regarding the screen quality, what else can we pay attention to

As we all know, the screen’s saturation, contrast, color gamut, resolution, pixel density, brightness, refresh rate, touch sampling rate, eye protection certification, etc., all affect the perception of the human eye, but these parameters are quite a bit of a cliche. It means, I won’t go into too much detail here. Let’s briefly talk about those things that people usually don’t pay much attention to, but may affect the overall quality of the screen.

①HDR10/10+ standard

First of all, HDR (English full name High Dynamic Range, high dynamic range image technology) is actually nothing new. It has been active in the digital audio and video industry. In recent years, it has gradually become the standard configuration of flagship mobile phones. This technology can provide more The large dynamic range and image detail display technology can provide better contrast, color accuracy and more vivid colors, and retain the dark details and bright levels. Compared with the quasi-dynamic range (SDR), it can make pictures and videos The picture looks more shocking and real.

However, HDR technology was not as valued by consumers as it is today. The reason is that if you want to play the power of HDR, you need to cooperate with HDR film source to get the maximum effect. In other cases, the picture is simple. HDR processing, but with the gradual enrichment of HDR equipment and content, the advantages of HDR become more apparent.

HDR10+ standard

At present, HDR10/10+ has become the most common HDR standard. If a mobile phone supports HDR10 or even HDR10+ standard, it means that it will also support 10Bit color depth (1.07 billion colors), and the screen brightness is at least 1000nit or more. Proper flagship screen standard.


last year,Mi 10After the release, the unfamiliar word "JNCD" began to gradually enter everyone's field of vision. Followed by,OnePlus 8The series was released and JNCD was hot again for a while. Now, as long as a mobile phone says what its screen is like, this vocabulary will basically appear, and it has become a "standard".

OnePlus 8T JNCN average 0.3 (Image source official)

In fact, it is true, JNCD is a standard. It is mainly used to measure the color accuracy of the screen. The smaller its value, the more accurate the color displayed on the mobile phone screen, and the more realistic the effect seen by the naked eye. The current industry standard is JNCD<2,而Mi 11And OPPO Find X2Approximately equal to 0.38,OnePlus 8TIt's only 0.3, these phones are familiar to everyone, and the screen is their important selling point.

Mi 11 screen parameters (Source: Xiaomi official)

However, JNCD is not a "good screen" label, and the absence of a JNCD value does not mean that a mobile phone screen is not good. But if it is mentioned, it is naturally to prove how good the screen quality of one's mobile phone is, which is equivalent to "authoritative endorsement".

In short, if the JNCD value is very high, obviously it will not be marked to the user. If you see the JNCD value when browsing the details page of a certain mobile phone, and it is far less than 1, then the screen of this mobile phone is probably not too difference.

③Samsung AMOLED screen material

Strictly speaking, Samsung AMOLED screens cannot be used as a standard to measure the final quality of a screen. However, AMOLED screens are highly recognized in the market and occupy the largest market share in the world. Most of the models that require fuss on the screen are very It is difficult to get around it, and it is necessary to mention this topic here.

As we all know, the most commonly used screen materials for commercial mobile phones are LCD and OLED. Both have advantages. However, in general, OLED is much more important than flagship phones. AMOLED is a branch of OLED. It refers to a screen based on AMOLED materials. Compared with traditional liquid crystal panels, AMOLED has the characteristics of faster response, higher contrast, and wider viewing angle. Among them, Samsung AMOLED is the most popular. Familiar.

But the so-called Samsung AMOLED screen is actually just a general term. Under this list, there are many AMOLED screens of different materials. Although they are all called by one name, they are actually divided into three, six or nine categories. Recently, when a lot of new flagships are released, they also advertise the screen material from time to time. Although most people don't know what this means, it can be mentioned repeatedly by manufacturers and the designation is not bad.

So the question is, what common materials does Samsung AMOLED have? At present, Samsung AMOLED screens are mainly M series and E series. Among them, the M series is Samsung’s top screen, such as the M10 on last year’s S20 series and the M11 used on this year’s S21 series. They are generally only used on Samsung’s own products. , Others want to buy but can’t buy it.

Samsung Galaxy S21 UltraThe screen material is M11 luminescent material

The E series has a lower positioning than the M series. At present, the more common materials are E3 and E4. Compared with the previous generation, the contrast ratio is greatly improved and the blue light is reduced. Compared with ordinary OLED screens, the color reproduction, color range, and There are certain advantages in the viewing angle range, so E3 and E4 materials are also common on flagship phones. Of course, although it is slightly inferior to the top M material, it is also a real high-end product. If you see a mobile phone advertising an E3 material screen, you will definitely not lose money.

Mi 11 screen material is E4 luminescent material

In fact, there are really many things that can be talked about about mobile phone screens. For example, some high-end phones use the latest generation of Gorilla screens as covers to improve screen durability. On some low-end phones, even if the screen quality is difficult It is comparable to the flagship, but it will also pay more attention to the details, such as adding some oleophobic layers to improve the user experience, so even if there are no very bright parameters, consumers will feel very comfortable to use.

Finally, there is something to say:

The screen parameters are very intuitive and the most common, but when the manufacturer is trying to promote a certain parameter, we should not easily define this screen. Just like the resolution, refresh rate and sampling rate, the higher the exposure, It is often more confusing, so when choosing products, you still have to keep your eyes open, refer to and compare them, and if possible, you can go to the offline store to experience it yourself.

Of course, it is really not easy to buy a mobile phone now, and it is not easy to buy a screen that is not so "like". Although high-end products are not all top-notch, they rarely make everyone feel uncomfortable in terms of screens.In the low-end models, the screen may be castrated due to cost issues, but how a mobile phone does not only depend on the screen, other aspects may be better.Of course, if there is such a product that is "unremarkable" everywhere, then what are you still struggling with? Give up as soon as possible and buy something else!