Samsung has used the A screen for so many years, why can't it go to 4k?

Samsung's A is very good, but it is slightly inferior to Sharp and JDI in the highest brightness, but the instantaneous brightness is still enough. The A screen is more energy-saving, because it does not need electricity to display black, and these two are just as good in display effect.

At present, Samsung AMOLED has become the mainstream. After all, its self-luminous characteristics are more energy-saving and better in color than LCD screens, but there will be cases of screen burning. Although the LCD screen is not gorgeous enough, it has a long life and is not easy to break down. Because the AMOLED screen is current-driven and has self-luminous characteristics, under the same conditions, the higher the PPI, the lower the brightness and the lower the power consumption. At present, the screen brightness has a good performance. If the brightness is low, you can't see clearly in the sun. However, the display fineness of the screen is still related to PPI, and the higher the PPI, the more delicate the display. There are few 4k mobile phones on the market. Sharp has a 4k resolution mobile phone, and its market share is not high.

Now the technology of mobile phone manufacturers can also produce 4k resolution. The higher the resolution, the finer the screen and the higher the power consumption. In terms of cost performance, 2k resolution may be the trend in recent years. At present, all smart phones use lithium batteries. In recent years, there has been a technical bottleneck in lithium battery technology, and there has been no great progress. Without the matching of new battery technology, Samsung's new flagship is not equipped with a 4k mobile phone, which is understandable. 4k resolution is a new resolution standard for digital movies and digital content. The name 4K comes from its horizontal resolution of about 4000 pixels. Common 4K resolutions include full aperture 4K (4096× 3 1 12), Academy4K(3656×2664) and other standards.

Resolution mainly refers to the number of pixels that a display can display, which can be classified from two directions: display resolution and image resolution. Screen resolution is the accuracy of screen image, which refers to the number of pixels that the display can display. Because the points, lines and surfaces on the screen are all composed of pixels, the more pixels a display can display, the finer the picture will be, and the more information can be displayed on the same screen area, so resolution is one of the very important performance indicators. The whole image can be imagined as a big chessboard, and the resolution is expressed by the number of intersections of all warp and weft. When the display resolution is fixed, the smaller the display screen, the clearer the image. On the contrary, when the display screen size is fixed, the higher the display resolution, the clearer the image.