There are many differences between our commonly used LCD TV screens and the application of LCD screens in industrial equipment, which are listed below for your reference.
1. Due to the requirements of the use environment of the LCD TV, the image is displayed after polishing, which cannot fully reflect the actual effect. Since what the display screen observes is usually a static image, the requirements for the color reproduction of the display screen are higher than that of the TV. Therefore, the video channel of the professional display screen should be equipped with brightness, chroma processing and R, G, B processing Precise compensation circuit and delay circuit to ensure the phase synchronization of the bright/color signal and the R, G, and B signals. If the definition is mainly determined by the amplitude-frequency characteristics of the video channel, the degree of reproduction is mainly determined by the phase of the chrominance signal and the luminance signal of the three primary colors of red (R), green (G), and blue (B) in the display. Decided.
2. LCD TV display does not have BNC self-locking color difference input interface and DVI-D interface. Industrial LCD screens mostly use ports such as RGBBNC color difference interface with self-locking mechanism and professional DVI-D video interface.
3. There are no strict requirements for dust and heat resistance of the LCD TV display. Industrial LCD screens must be designed with no mechanical exhaust fans to maintain air circulation and heat dissipation, so as to avoid dust and fan noise problems. When the internal temperature rises due to unknown reasons, the display automatically controls the backlight system to keep the temperature at the highest level. Below temperature.
4. In the process of installation and debugging, especially the components and the aging of the whole machine, the requirements of the display screen are also higher. The aging of the whole machine when the TV is manufactured is usually about 8 hours of power on the assembly line at room temperature. Machine aging needs to be energized and aged for more than 24 hours on the aging assembly line in a closed environment with high temperature and high humidity to ensure the stability of the whole machine. When the display screen constitutes a closed-circuit monitoring system, it usually needs to be energized continuously 24 hours a day, 365 days a year (while TV sets usually only work for a few hours a day), and the application environment of some displays may be harsh. The reliability and stability of the display screen are required to be higher. In the selection of components, the characteristics of the withstand voltage, current, temperature, humidity and other aspects of the components used in the display are higher than those used in the TV; compared with the TV, in terms of design, The current, power consumption, temperature, resistance to electrical interference, electrical shock, and mean time between failures of the display are far greater than those of the TV. At the same time, the display must use a fully shielded metal casing to ensure electromagnetic compatibility and interference performance.
5. The use of S232 serial port control for LCD TV display can only realize the control commands possessed by the remote control, but cannot realize industrial control. The LCD screen adopts S232 serial port control, and there are more than 200 open control passwords. It is suitable for various industrial environments and is convenient for multi-screen use. All display devices can be controlled without the remote control, and it can assist, start regularly, and delay. Various industrial requirements such as turning on at any time, machine self-inspection, etc.
6. The LCD TV display only supports several common TV resolutions specified in the manual, and the LCD TV only needs to perform effect processing according to the common resolutions used by civilian users. The high reliability and high-definition display capability of the LCD screen will ensure that you can fully display the recorded high-definition audiovisual and video signals in front of the viewer. The LCD screen is the preferred display screen, and it has the function of directly reflecting the image quality. In addition to the full 19201080 resolution for the selection of display devices in the field of broadcast and television, the resolution of the professional display screen is automatically adjusted according to the display output.
7. The whole shell of the LCD TV display is made of non-metallic material, and the internal board line is designed for civilian use. It is easy to cause the aging of the machine parts when it is turned on for a long time. Due to the requirements of the operating environment, the housing material of the LCD TV display machine is made of metal. And the internal board lines are industrialized design, not easy to aging; embodiment of the concept of energy saving and environmental protection: low energy consumption design; use of environmentally friendly materials. The regular appearance is convenient for splicing, combined installation and other industrial needs.
