Different industries have different requirements for lcd displays. For example, many devices need to use ultra-bright LCD displays due to different usage environments. How to meet the needs of such customers? What other options are there? Submit questions: 1. How to make the LCD display achieve ultra-high brightness? 2. How bright can the bright LCD display be? 3. How to improve the brightness of the LCD display to deal with the heat dissipation problem?

We all know that the brightness of the LCD display is directly related to the backlight source. Generally, the normal brightness value of the LCD display we use indoors is 200-400 nits, but the brightness of the LCD display used outdoors is far from enough. . The brightness of the backlight depends on how many LED lamp beads there are. When making the backlight, we generally use 2~6 LED lamp beads on the edge of the backlight. The small-sized LCD display does not have enough space to place too many LED lamp beads, and it is necessary to considering the uniformity of light transmission, the approximate limit is to place up to 6 LED lamp beads. Therefore, we must take other methods to improve the brightness of the backlight. Another solution is to change the LED lamp beads, that is, to use high-efficiency light-emitting and high-efficiency LED lamp beads, so that the brightness of the LCD display can be increased by 30%~50%. In addition, we must also pay attention to the light transmission efficiency inside the backlight. More D-BEF films are needed to improve the light transmission efficiency of the LED chip. At the same time, a well-designed light transmission plate will improve the light transmission efficiency of the TFT.

Generally a good high-brightness screen has high brightness, but it will be softer and not dazzling. It is not equivalent to the illumination of the backlight. (Like the sun, although the light is strong, it is also dazzling.) The brightness value is a color range value, which is related to the The color saturation, contrast, and backlight illumination of the screen that comes out. Therefore, looking at a very bright screen may not necessarily achieve the brightness value we require, because what the human eye sees is the illuminance, and the illuminance is affected by the environment, the size of the space, and many other aspects, and the brightness measured by the instrument is the brightness. Generally, the brightness of high-brightness LCD displays is 500cd/㎡-2000cd/㎡.

The brightness of the LCD display has increased, so the power consumption also needs to be increased. How to solve the problem of heat dissipation? First of all, what we consider is to improve the manufacturing process, innovate in the packaging process of the LED backlight and the application of light efficiency, and at the same time use the heat dissipation technology to reduce the temperature of the backlight to ensure the normal use of the LED backlight. In addition, it is necessary to consider the selection of materials, because as a high-brightness LED backlight, it generates more heat than a conventional brightness LED backlight, so we must choose high-temperature-resistant materials and the entire backlight. The lighting design must have good heat radiation, otherwise, the bright lcd display will overheat after working for a long time. Thus, the life and reliability of the entire TFT liquid crystal display module are affected.