How to Choose a High-brightness LCD screen?
Due to different application environments, many industries have different requirements for display screens. For example, when used in extremely cold or hot environments, the display screen needs to have a wide temperature function and can display normally in extremely cold or hot environments. For example, outdoors, it needs to be able to display clearly in outdoor high-brightness environments. These have put forward very high standards for display screens, and industrial display screens were born. It can meet the special requirements of different industries and has high reliability. So today we will talk about how to choose a high-brightness LCD screen:
1. High-brightness LCD screen backlight uniformity
The uniformity of the manufacturer’s high-brightness LCD screen may only reach 65%-75%, while the uniformity of a better manufacturer can reach 75%-85%, and the point type can reach more than 90%-95%. Of course, the price of a good high-brightness screen is also different.
2. High-brightness LCD screen heat dissipation temperature
Here we have to mention the temperature to draw attention. A good high-brightness LCD screen has low power and low heat generation. The core is mainly in the packaging process of the LED backlight and the application of light efficiency. If the process is not up to standard, the light efficiency cannot be improved, and the high-brightness display screen may generate more heat. At the same time, heat dissipation technology is also needed to reduce the temperature of the backlight and ensure the normal use of the LED backlight. But this only solves the backlight, and does not solve the problem of high temperature of the LCD glass. It should be remembered that the high-brightness display is still a semi-finished product, and it is a source of heat when used outdoors. Therefore, there are companies on the market that add aluminum profiles to the back cover of the screen (dissipating heat through heat conduction), and the standard is not original.
Finally, the most important thing for a good high-brightness display is the backlight technology, not the heat dissipation of the external structure. Good backlight technology can achieve the required color temperature range, high color saturation, high contrast, high uniformity, high brightness without glare, and control the impact of the heat emitted by the LED backlight on the LCD glass. The most important point is that the higher the temperature, the faster the LED backlight decays and the shorter the service life.
3. Brightness of high-brightness LCD screen
A good high-brightness touch screen has high brightness, but it is relatively soft and not dazzling. It is not equivalent to the illumination of the backlight (just like sunlight, the light is strong but also dazzling). The brightness value is a color perimeter value, which is related to the color saturation, contrast, and backlight illumination of the screen. Therefore, a very bright screen does not necessarily reach the brightness value we require, because the human eye sees illumination, which is affected by many factors such as the environment and the size of the space. The brightness is measured by instruments.
4. Professionalism of the manufacturer
A high-quality high-brightness touch screen not only needs a good light source (LED lamp beads), but it is not enough to just choose good lamp beads, it is not enough without good packaging technology, it is not enough to have a good light source, it is not enough without good LED heat dissipation technology, it is not enough without good light guide technology, and it is not enough to have good light guide technology without good light effect. Therefore, when choosing a good high-brightness LCD touch screen, you must pay attention to whether the manufacturer is professional. In today’s society, most people choose to do everything to make money. Most of them are imitating or only know one or two fields. Very few can really solve the backlight problem as a whole.
