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Laptop Screen knowledge
The common sizes of laptop screens include 11.6 inches, 13.3 inches, 14 inches, 15.6 inches, 16 inches, and 17.3 inches. If you often go out with a laptop, please choose a 14-inch or smaller laptop; if you usually keep your laptop in a fixed place such as your home or office, 15.6-inch or larger laptops can give you a better user experience.
The display ratio of the laptop screen is mainly 16:9 and 3:2. If it is a 14-inch laptop, the 16:9 display ratio screen can make the body thinner and more suitable for watching videos; and 3:2 display ratio screen can shorten the length of the body, which is conducive to compressing the width of the upper and lower bezels of the screen to increase the screen ratio. This display ratio is also more suitable for office work, and more content can be displayed on the screen.
The higher the screen resolution of the laptop, the finer the screen display, but it will also cause problems such as the text and icons becoming too small. You need to use the “zoom” function of Windows 10 display settings to zoom in to 125%~150% to see clearly. For the majority of ordinary users, the resolution of the FHD level is sufficient, and the resolution of more than 2K is more suitable for professional design and graphics workers.
The standard refresh rate of the laptop screen is 60Hz, and a few gaming laptops are equipped with screens with a refresh rate of 120Hz, 144Hz, or even 240Hz. These ultra-high refresh rate screens are often called “e-sports screens” by gamers, which can effectively reduce the blurring and tearing of dynamic images and make the gaming experience smoother. If you like to play large-scale 3D games, it is necessary to choose a game laptop with a 144Hz refresh rate screen and a high-end discrete graphics card.
laptop screens can be divided into LCD and OLED according to the material. Among them, LCD screens include TN panels and IPS panels. The former has the lowest cost and has the problem of a low viewing angle (mainly the vertical direction). When the angle is large, the screen will appear color cast and whitening. The advantage of the IPS panel is that the viewing angle is higher, between 170 degrees and 180 degrees. At present, most high-end laptops are equipped with IPS panels.
The advantages of the OLED screen are rich colors and higher contrast, and it consumes almost no power when displaying a pure black screen. The combination of a black desktop and a dark background is conducive to extending the battery life of the laptop. However, the cost of OLED screens is very high, and only very few products in the laptop field that exceed $1,000 are likely to be equipped with OLED screens.
The color gamut affects the color reproduction of the screen. The higher the color gamut means that the screen color display is more accurate and more comfortable to look at. Currently, the color gamut of laptop screens is generally 45% NTSC, 72% NTSC and 100% sRGB. Among them, 45% NTSC has the highest popularity and the worst color performance. 72% NTSC and 100% sRGB both belong to “high color gamut”, and both have the same theoretical effect, but 100% sRGB is more suitable for people who are engaged in professional image design.
In the early laptop screens, there were “matte screen” and “glossy screen”, and the two types of screen panels were directly exposed, while the glossy screen added a layer of coating to the surface of the screen panel, forming a mirror-like effect, which looked very high-end. However, this mirror effect has a serious problem of reflection, which will affect the normal viewing of the screen whether it is in sunlight or light. Therefore, almost all new laptop products launched in recent years have a matte screen.
In addition to laptops that support touch operation, there are many thin and light laptops that cover the surface of the screen panel with a glass cover, which can protect the screen and make the laptop look more high-end. However, the protective glass will increase the weight of the laptop and bring some reflection problems.
Even the “matte screen” has a certain degree of reflection. Therefore, many laptops now add an anti-glare coating to the surface of the screen panel (or protective glass), which can further reduce the problem of light refraction and maximize the experience of using laptops outdoors (under light).
In most cases, a laptop equipped with a touch screen will have a conductive digitizing layer over the LCD panel to allow for tapping, squeezing, or swiping input. Most laptops utilize what is called capacitive touch, the digitizing layer on the surface of the screen uses the conductivity of your skin to detect where you are touching with one or more fingers. This touch layer is usually an ultra-fine wire mesh or film; it must be fine or translucent enough so as not to interfere with visibility. The capacitive touch layer maps your finger or pen input to coordinates on the screen to determine the location of your touch.
Most laptop screens are removable. If you are not satisfied with the color or resolution of the screen, you can buy a better screen panel and replace it yourself. Nowadays, most of the new laptop screen panels use the eDP port, but there are single-channel and dual-channel differences in the port. The latter has 30Pins pins and can support higher-resolution signals. If you need to upgrade the screen, be sure to confirm in advance whether the laptop is compatible with the (newly bought) screen panel.