Weighing the pros and cons characteristics and technological conditions is LCD splicing screen selection process in the first step, and for different digital signage equipment LCD splicing screen application and usually for consumer products. The following seven points should be considered in the selection of the following.
One, the whole machine stability (including the use of time, anti-interference, etc.)
The LCD splicing screen in a digital signage system usually requires 24 hours a day annually 365 days continuous interruption of electricity use (and TV usually only everyday work hours), and some splicing screen application environment may be more severe, which requires the reliability and stability of the LCD splicing screen more high. As compared with TV, in the design, LCD screen, the current power consumption, temperature and electrical interference, electric shocks and uniform margin and trouble free use time are far greater than the TV at the same time, LCD screen also must use a fully shielded metal shell to ensure the electromagnetic compatibility and interference in the performance of components; on the type, characteristics of the LCD screen using the components of the current, temperature, humidity, pressure are higher than the TV using the components in the installation, debugging; especially the process requirements of components and the aging on the LCD screen, the requirements are higher, when the aging television manufacturing is usually in line electricity for 8 hours at room temperature, and the LCD screen aging is required in high temperature, high humidity aging pipeline closed environment of the electricity aging for more than 24 hours, to ensure the stability of the whole machine.
Two, image clarity
LCD splicing display with intuitive reflect the function of image quality, coupled with 1920 * 1080 full resolution for digital signage field of display device selection, the LCD splicing screen is the preferred choice of splicing screen, professional splicing screen resolution is based on the display output automatically adjust the resolution (no matter anyway); the high reliability and high clear display ability will ensure that you will be able to record edit high-definition video, video signal full display eyes are watching.
On the other hand, LCD TV only supports the specification of several common resolution of tv. Due to the resolution of a number of civilian television signals only a few, television LCD as long as the use of civilian users of the common use of several resolutions to deal with the special resolution will lead to the flower screen.
Three, color reduction degree
If clarity is mainly determined by the amplitude frequency characteristics of the video channel, the reduction degree of mainly by the LCD splicing screen is red (R), green (g) and blue (b) three color luminance and chrominance signals signal phase. Because the LCD splicing screen is usually static image, thus to splicing screen color reduction degree higher than the TV, so professional splicing screen regarded passage in luminance and chrominance processing and R, G, B should have accurate compensation circuit and a delay circuit, in order to ensure bright / color signal and the R, G, B signal phase synchronization.
On the other hand, due to the use of LCD TV to environmental requirements, the image is displayed after the treatment after polishing. Can not completely reflect the actual effect.
Four, the use of machine materials
Due to the use of the environment, the use of liquid crystal splicing screen shell material part of the use of metal texture. And the internal plate line is the industrial design, not easy aging; energy-saving environmental protection concept: low energy consumption design; environmental protection materials. Neat appearance, easy splicing, combination and installation, etc..
On the other hand, the LCD TV machine shell all for non metal material design. The internal plate line is used for civil design, long time boot easily cause parts of aging. Also commercial television appearance is irregular appearance, incidental digital signage screen splicing system, the appearance of the arc system as auxiliary facilities of auditory and visual construction up and the overall aesthetic effect will be greatly reduced.
Five, port
LCD splicing screen more than the use of industrial ports such as the RGBBNC of the color difference with a self locking mechanism of the interface and professional DVI-D video interface;
On the other hand, LCD TV has no BNC self - locking color difference input interface and DVI-D interface;
Six, control interface
LCD splicing screen can be controlled by the S232 serial port, open control password as many as 200, to adapt to various industrial environment. The use of more convenient splicing screen without by the remote control can control all display devices, and can assist, boot from time to time, startup delay, the machine self-test industry requirements.
Conversely, LCD TV can also be used S232 serial control. But only with the remote-control control instruction. And can not achieve industrial control.
Seven, no fan structure
The LCD splicing screen in the design with no mechanical exhaust fan to keep the air circulation and cooling, so as to avoid due to the mechanical exhaust fan caused by dust and fan noise problems, when the internal temperature is elevated due to unknown reasons, the LCD splicing screen automatic control backlight system maintain the temperature to the maximum operating temperature.
On the contrary, LCD TV due to the application of the environment, which has no strict requirements