Differences between SMT adhesive, LED and LCD
Skills Patch Adhesive for Evaluating Performance Quota
At present, the extensive use of SMT chip technology enables related companies to effectively improve the processing effICiency and quality of their products Among them, patch adhesive plays a very important role In this paper, performance quotas and evaluation of patch adhesives Viscosity Viscosity is the degree to which a fluid resists flow It is a quantitative change in the ability of fluid molecules to absorb each other and block the relative motion of molecules, that is, the internal resistance of fluid flow Viscosity is an important part of patch adhesive. Different viscosities are suitable for different coating processes There are two factors that affect the viscosity of the patch adhesive: one is the temperature, the higher the temperature, the lower the viscosity of the patch; The second is pressure. The higher the pressure, the higher the shear rate and the lower the viscosity Yield strength The ability of repair adhesive to resist external damage before curing is called yield strength, which is characterized by yield value When the external force is less than the yield strength, the patch adhesive remains solid; When the external force is greater than the yield strength
Differences between SMT LED and LCD
"Describe the difference between LCD and LED" will give you an in-depth explanation of the difference between LCD and LED. I hope that through in-depth understanding of them, you will not have any questions when purchasing. Brightness: The response speed of single element of LED display screen is 1000 times of that of LCD screen, and its brightness is more favorable than that of LCD screen. LED display screen can also be illuminated under strong light, and can adapt to the low temperature of minus 40 degrees. Refresh rate: LED uses electric energy to convert into light energy. It uses the injection principle, so its refresh rate is higher, and then it is better in screen processing. In terms of viewing angle, the angle of LCD is very limited, which is a very vivid and headache problem. As long as the angle is too large, you can't see the original color, or even see anything; LED can provide a view angle of up to 160 degrees, which has great advantages. power waste. Power consumption is the most concerned problem.
Compared with LCD, the power consumption of LED is about 1. In this respect, LED has great advantages. At present, the contrast of the known relatively high contrast LCD display is 1, but in many cases, it can not meet various requirements, but LED display can achieve higher contrast and be used more widely. The service life of LED display screen is generally about 100000 hours. Under normal circumstances, it can be used for deCADes, while LCD displays are much less. In appearance, LED is based on SMD light-EMItting diode. Compared with LCD, its display can be thinner. The application scope of LED display screen is wider than that of LCD display screen. It can display all kinds of text, digital, color video and animation information. It can also play color video signals, such as TV, video, VCD, DVD, and more importantly. Use multiple screens for webcasting. The color LED screen is more realistic than the LCD screen
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