Do you know the structure design of display screen?

In the field of consumer electronics, display screens are very common and have different functions and types. Some typical products are listed below as examples for you.

Glass cover-plate: It is made of high alumina silicate tempered glass or microcrystalline glass. It is usually 0.7-1.2mm thickness, silk-screened on the back, and AR (anti-reflection)/AF (anti-fingerprint) coating on the surface.

Touch Screen: It can achieve touch sensing. ITO or metal grid is used as a transparent conductive layer. With the development of technology, this part can be integrated into the display layer or glass cover layer, which is the technology of Incell, On-cell, OGS.

Display module: LCD is composed of polarizer, color filter, TFT, liquid crystal, backplane, etc., and is currently the most widely used mobile phone display screen. OLED is composed of polarizer, organic light-emitting layer, glass, TFT and other materials. The screen can emit light by itself, with the advantages of light, thin, bendable and low energy consumption. It is an emerging screen display technology.

Backlight unit: It is the core of the light source of the LCD. The backlight module is responsible for providing uniform and stable white light, and realizes light guidance and optimization through components such as light guide plate, reflecting plate, diffuser and brightness enhancement film (prism). However, OLED does not contain this part.

Foldable phones use flexible OLED display screens, and the cover uses ultra-thin flexible glass (UTG) instead of tempered glass protective layer, which can be bent and folded without affecting the display effect. The folding screen key to foldable phone lies in its sophisticated and complex internal hinge structure, which prevents the phone from causing excessive pressure on the screen when it is bent. It also can ensure the display effect after the screen is unfolded. In order to meet these two requirements, foldable phones use hinge design and micro-bend crease technology respectively.

In consumer electronic products such as smartphones, tablet computer, and smart watches, the display screen has evolved from a single image output tool to the core medium of human-computer interaction. In particular, the popularity of touch screens has completely changed the way users interact with devices. The efficiency of information transmission has been raised to a new level through intuitive clicks, slides, and gestures. Behind this interactive revolution is the joint promotion of the diversified development of display technology and structural innovation.

The basic structural methods are similar, mostly transparent cover + housing (support cover, modular Braces System) + display module.

From the stability and reliability of LCD, to the free form of OLED, and to the intuitive touch interaction, the technological evolution of consumer electronic display screens has always revolved around user experience. In the future, with breakthroughs in technologies such as flexible materials and quantum dot displays, screens will no longer be limited to "flat", but will become a multi-dimensional carrier that integrates information interaction and aesthetics, and continue to push the innovation boundaries of electronic products.