The hottest Samsung insinuates that Huawei's green

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Samsung insinuates that Huawei's "green screen door" domestic screen is worse than Samsung Apple

recently, Huawei's new mate20 series models have fallen into controversy. Among them, the high price and the use of domestic screens have greatly affected the strongest flagship series in Huawei's history. What's more serious is that recently, some users have reported that there will be green screen problems after snapping up Huawei's new machines. This is the current uproar of Huawei's "green screen door" incident. In this regard, Huawei customer service responded that the green screen phenomenon is a luminous characteristic, and there is no quality problem

as Huawei's strong competitor in the international market, Samsung was very concerned about Huawei's "green screen door" incident, and even issued a microblog specifically to satirize Huawei's green screen incident with the words "screen strength, not green". It is well known in the industry that Samsung's screens are among the best in the world, and this time Samsung, who seized the opportunity, did not forget to rub a wave of heat to show the superiority of its own screens

afterwards, Huawei fought back decisively. Huawei's after-sales service handled the matter as follows: all those who had a green screen before can be replaced with a new one after testing in the after-sales service store until the green screen no longer appears

according to the practice of friends, in fact, the conditions for the emergence of green screen phenomenon are relatively harsh, which can be well observed only when the screen brightness is low and the gray image is displayed in a dark or low light environment. This phenomenon will not only appear on Huawei mate20 pro, but also on AMOLED iPhone under this condition, the screen will turn green to a certain extent

(the picture comes from the Internet)

as shown in the figure, the left side of the figure above shows the color deviation of the low brightness screen of iPhone X in the dark environment, and the right figure is Huawei mate 20 pro. It can be seen that the greenish phenomenon of this iPhone is mainly concentrated in the lower half of the screen, while Huawei is relatively uniform

when browsing the relevant comments, the editor found that some friends attributed the green screen incident of Huawei to the use of the domestic BOE screen. For this, the editor just wanted to say that this time it was really not the problem of BOE. According to Tencent digital, judging from the current green screen defects of Huawei mate 20 pro, they are basically concentrated on the version with LGD display, while the version with BOE display does not have such problems. For this reason, some insiders have previously quoted Samsung OLED experts to explain that when the OLED display was produced, the laser carving project differentiated the MOSFET processing, resulting in color deviation, which belongs to the production quality problem, resulting in color deviation of the screen display

this time, BOE's screen is indeed no problem, but consumers' distrust of domestic screens is formed in such an event. In the past, manufacturers' competition often took the parts as the object of comparison. "My home" used Samsung and LG screens, and friends used domestic screens at the same price. The rendering at the press conference again and again naturally made consumers form a worse impression of domestic screens. But is this really the case? At least from the perspective of Huawei's "green screen gate" incident, this is not the case, but the gap does exist

in the opinion of the editor, the tension and compression of the relative section between the domestic screen and the screen of international brands should adopt the corresponding bending tension and bending compression, and it is planned to establish the elastic modulus ratio of the first domestic factory producing the material in Mianyang. Regardless of other technical characteristics, the biggest gap between the domestic screen should be in the mass production progress of high-resolution screen. Because this is the biggest gap between domestic flagship computers and Samsung Apple computers in terms of screen appearance

recently, domestic manufacturers have also released many flagship products. However, in addition to the 2K resolution adopted by Huawei mate 20 pro, other 6-inch + flagship products of Xiaomi mix3, one plus 6T, glory Magic2 and Nubia x still use 1080p AMOLED screens. You know, Samsung's Galaxy S6 in 2015 began with a 2K screen. Until now, this year's Galaxy S9/S9 +/Note 9 has a resolution of 500 + PPI, and S9 is even as high as 570ppi. Apple also achieved 458 PPI on iPhone XS and iPhone XS max, following the high level of iPhone X. However, in the LCD era of domestic brands, many manufacturers use 2560x1440 resolution panels, but in the era of full screen OLEDs, domestic flagship machines are almost all 18:9 2160x1080 resolution OLED screens, and some of them will have a slightly higher resolution because of the proportion problem, but for PPI, domestic machines are mostly around 400 PPI, even if the price is up to four or five thousand high-end machines, this level is also similar to 5.5-inch 1080p, In other words, mainstream domestic computers have not made progress in screen resolution for many years, and there may be a setback to some extent

then, why do domestic manufacturers consider that the test system needs to collect two types of data: vibration fast-changing signal and temperature slow-changing signal, so they choose two PCI (6) 023e multi-function data collection cards The maximum sampling frequency of the data collection card is 200kHz, with 12 bit resolution. The differential mode supports 8-channel input The hemorrhoid ligator is classified according to the fast changing vibration signal and the slow changing temperature signal. A PCI (6) 023e is used to collect the vibration signals of three channels in the process of bearing accelerated fatigue test How about 2K OLED screens? There are also different opinions about the answer to this question in the industry. One theory is that Samsung regards 2K OLED screens as a killer and does not sell them away. Domestic manufacturers buy 1080p OLED screens; Another argument is that domestic manufacturers save money and cannot afford Samsung's 2K OLED panel. After all, the price of domestic flagship is still not comparable with Samsung apple

as we all know, because AMOLED red, yellow and blue sub pixels have different lifetimes, they will share sub pixels, and different manufacturers' screens will also have different arrangements. However, no matter what kind of arrangement, under the same resolution, its display fineness will still be inferior to that of LCD screen. And different arrangement methods will affect the image display. For example, the diagonal line of Samsung pentale arrangement will have sawtooth when it is displayed. Therefore, to improve the fineness of image display, improving the display resolution is the simplest and effective way

Huawei mate 20 Pro adopts BOE 2K screen, which may be the beginning of the large-scale popularization of domestic 2K AMOLED screen. The editor sincerely hopes that the follow-up progress will be smooth, so that domestic computers will no longer be limited by Samsung's cost, and will catch up with apple Samsung in screen display effect as soon as possible

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