Views: 80 Author: Site Editor Publish Time: 2020-01-07 Origin: Site
The 4K display refers to a display device with 4K resolution. The name of 4K comes from its horizontal resolution of about 4,000 pixels, and its resolutions are 3840x2160 and 4096×2160 pixels. Compared with the mainstream 1080P full HD resolution, the 4K display adds millions of pixels, and the fineness of the picture and the display quality are qualitatively flying. Let's take a closer look at the 4K display.
In the 1990s, the American Society of Motion Picture and Television Engineers "Digital Image Hierarchy" special working group studied the spatial resolution requirements of imaging systems. The team divided the display into low resolution (less than 0.8K) from the perspective of resolution. ), four levels of conventional resolution (less than 2K), high resolution (2K) and ultra high resolution.
In May 2012, the International Telecommunications Union announced the "UHDTV" standard. The TV with a physical resolution of 3840x2160 (4Kx2K) and above is called Ultra HD TV. The industry is also referred to as 4K TV. The standard 4K resolution is 4096x2160 pixel resolution, and the total number of pixels can reach 4 times the HD resolution 1920x1080. A finer image can be displayed with the same screen size.
The screen resolution is the precision of the screen image and refers to the pixels that the display can display. Since the dots, lines and faces on the screen are composed of pixels, the larger the pixels, the finer the picture, and the more information that can be displayed in the same screen area, so the resolution is a very important performance indicator. In professional-grade displays, the requirements for resolution are also increasing.
4K resolution refers to the screen resolution level, which is reflected in the value of the screen horizontal pixels reaching 4000 or more. It is an emerging standard for digital cinema and digital content after the 720P resolution of the CRT display era. It has built-in stereo speakers and 7W x 2 high quality speakers. Narrow glass frame for easy multi-screen stitching, standard 4K resolution is 4096X2160. The desktop 4K display resolution is mostly 3840X2160, which is mainly to match the 16:9 image ratio.
The higher the resolution of the display, the finer the picture quality, the more realistic the HD video and game visuals, and the better the visual experience. Therefore, 4K resolution in movie or game games will undoubtedly bring unprecedented picture performance. However, due to the lack of ultra-high-definition resources and high cost, it is difficult to achieve universalization at this stage. The cost here is mainly the cost of the panel. Adding pixels on the same size LCD panel means that the probability of bad points increases. At the same time, the ultra-high resolution puts higher requirements on the graphics card and the heat sink. To perform the entertainment application experience at 4K resolution, it is also necessary to purchase a high-end graphics card, which increases the burden on the user. The heat dissipation of display can be achieved by fan heatsink, aluminum heatsink fins, heat pipe heat sink, surface radiation heat treatment and so on.
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