Figure 1. If an incompatibility exists between the LED and VOCs, the LEDs discolor rapidly, often within hours of exposure. Light output levels drop and changes in the quality of the light’s color or chromaticity occur. Before and after photos show how output levels can deteriorate.
I agree, this was a very informative and easy to understand article that discusses an important topic in LED Assembly production. The importance of adhesive selection if overlooked can result in a very poor product despite an otherwise solid design, and understanding their interaction up front can save time and money in the long run.
"Careful adhesive selection during device design ensures that any incompatibilities between LEDs and adhesives never occur" sounds like excellent advice. Thanks for a great article.
Thanks for the educational posting. What we learn is that the whole process is quite complex and that it is vital to understand each of the materials involved, including their chemistry.
So it is clear that one must work with a reliable supplier to make the correct choices, and then do an adequate amount of testing to assure that the selected materials will work even with the range of production variations. Because we know that there does exist a bit of variability.
What makes this movie stand out from the typical high school sports story is that the teenagers are undocumented immigrants, and the big game is a NASA-sponsored marine robotics competition. Like many other Hollywood movies, however, Spare Parts only tells part of the story. What the film shows -- and doesn’t show -- raises important issues affecting STEM education in the US.
Instead of sifting through huge amounts of technical data looking for answers to assembly problems, engineers can now benefit from 3M's new initiative -- 3M Assembly Solutions. The company has organized its wealth of adhesive and tape solutions into six typical application areas, making it easier to find the best products to solve their real-world assembly and bonding problems.
Load dump occurs when a discharged battery is disconnected while the alternator is generating current and other loads remain on the alternator circuit. If left alone, the electrical spikes and transients will be transmitted along the power line, leading to malfunctions in individual electronics/sensors or permanent damage to the vehicle’s electronic system. Bottom line: An uncontrolled load dump threatens the overall safety and reliability of the vehicle.
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