At this stage, the LCD splicing wall is the most popular display in the display sales market. It has the unparalleled advantages of ultra-clear, high brightness, high contrast, and clear image quality. It has stable characteristics and a long service life. One hundred thousand hours is suitable for 7*24 hours of continuous work and can be used in new projects that require extremely high displays. As a very high-tech electronic device, the high and low temperature test of the LCD splicing wall is a very critical stage in the product quality control. After the product is embrittled, its efficiency can be improved, and it is conducive to the stable efficiency of the mid-to-late application. The high and low temperature test of LCD splicing wall is a preventive measure based on the characteristics of the product's repair rate curve, that is, the bathtub curve, so as to enhance the credibility of the product.
The embrittlement of the LCD splicing screen is divided into white light embrittlement (4 hours) and video embrittlement (48 hours).
The embrittlement methods of LCD splicing screens include constant current power source embrittlement and constant current source embrittlement.
DC power supply means that the amount of current is stable and will not change at all times. If there is a frequency problem, it is not a constant current. That is communication or pulsating current. The communication AC or pulsating current source can be designed so that the amplitude is stable and will not change, but this type of switching power supply cannot be called a "DC power supply". The embrittlement of the constant current power supply is the characteristic of Z in line with the current capacity of the LCD splicing wall, and it is the method of LCD splicing screen embrittlement of Z scientific research. Overcurrent impact embrittlement is also a new embrittlement method selected by the manufacturer. According to the application frequency adjustable DC power supply, the current volume adjustable DC power supply develops this type of embrittlement, in order to distinguish the quality of the LCD splicing wall in a short period of time Life expectancy, and many hidden safety hazards that cannot be singled out by the basic embrittlement can be singled out. LCD splicing wall.
LCD splicing wall high and low temperature test steps and common problems
1. Detection content: black screen, red, green, blue solid colors, gradients of gray values, actual video effects, text effects
2. The black screen detection time of LCD splicing wall is not less than 24 hours
3. The detection of pure color and gray value gradient color shall not be less than twenty-four hours
4. Video and text special effects detection shall not be less than twenty-four hours
5. Try to have some people on duty for the high and low temperature test of LCD splicing wall, and report to solve the problem immediately when it is found.
