Usually, the visibility of the LCD screen is relatively low due to the reflection on the surface of the LCD screen under sunlight or strong light. When we serve customers in different industries, we will find that many outdoor equipment is difficult to overcome the problem of LCD display being visible in sunlight.

In order to realize that the LCD screen still maintains a clear display screen under sunlight or strong light, so that the light can penetrate and not reflect, we Hifly Zhixian proposed to use optical bonding to improve the visual effect of the LCD screen under strong light. Optical bonding is a technical solution to enhance the optics of the LCD screen, which can make the LCD screen still clearly visible under various strong light, and can perfectly solve the display problem of the outdoor LCD screen.b

The LCD screen after bonding has optical properties that are clearly readable in sunlight, and can be adapted to outdoor all-weather display. It is a liquid crystal display enhancement technology with extremely high-tech content. Its main advantages are: delicate images and texts can be clearly seen in sunlight, vivid and vivid display colors, greatly enhanced contrast ratio, reduced emission light, and wide display viewing angle. Using the LCD screen of bonding technology, users can clearly read the displayed content and images under direct sunlight, which can fully meet the actual needs of outdoor applications in different industries.

The principle of optical bonding to realize visibility under strong light: in order to increase the readability of the LCD screen under strong light, the external contrast of the LCD screen must be increased. Optical bonding increases external contrast by reducing the brightness of light reflected from the surface of the LCD screen. Optical bonding display the bonding glass is bonded to the polarizer on the front surface of the LCD screen with transparent optical glue. Since the refractive index glass of the optical glue is almost the same, both 1.49, the two reflecting surfaces are eliminated. At the same time, the outer surface of the bonding glass is coated with an AR anti-reflection layer, so that the overall reflectivity to external light is only 0.4%. Lower reflection loss means higher contrast.

The transflective display combines the characteristics of the transmissive liquid crystal display and the reflective liquid crystal display at the same time. The ambient light reaches the semi-reflective layer after passing through the LCD, and most of the light is reflected back, but some light is not reflected back and lost. Correspondingly, if the ambient light is relatively weak, the backlight can be used to provide the light source required for the display. The light from the backlight can illuminate the LCD display after passing through the semi-reflection layer. However, as with ambient light, some light cannot be lost through the semi-reflection layer.

It must be noted that in the transmissive mode of operation, the light passes through the liquid crystal layer once, while in the reflective mode, the light passes through the liquid crystal layer twice. The transflective display technology is actually a compromise on the display effect. But it is a compromise solution, transflective LCDs can provide a similar display to transmissive, and in bright light conditions, they can provide a similar display to reflective.