How LEDs are made (2014)
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How LEDs are made (2014)
1–10 of 24 posts
Re: How LEDs are made (2014)
#2This was a lot lower-tech than I was expecting. Very cool!
Re: How LEDs are made (2014)
#3So every LED die is manually aligned?
Surely 10 years on that isn't true anymore??
Re: How LEDs are made (2014)
#41. Fascinating overall
2. "they can align over 80 per minute or about 40,000 per day." - terrifying, as I assume this is a metric workers are held against :O
80 per minute is less than a second for what sounds like several movements - move the die over, align, push down, move it out. While your eye is stuck to the microscope.
Re: How LEDs are made (2014)
#51. Fascinating overall 2. "they can align over 80 per minute or about 40,000 per day." - terrifying, as I assume this is a metric workers are held against :O 80 per minute is less than a second for what sounds like several movements - move the die over, align, push down, move it out. While your eye is stuck to the microscope.
For context this is a 12 year old article about an outdated factory before LED die bonders got cheaper. The humans are working as glorified pick and place machines doing very repetitive motions, not manually aligning each die through a microscope. This only works because the tolerances on the placement between the die and anode/cathode are huge and the surface tension of the adhesive does most of the work.
Re: How LEDs are made (2014)
#6Man, I miss photo articles like this that I can read at my leisure, without sound. Nowadays this would likely be a (probably frantic) video.
Re: How LEDs are made (2014)
#7So every LED die is manually aligned? Surely 10 years on that isn't true anymore??
no longer true indeed. comment a bit above mentions more modern automated alignments. this and things like blue leds coming down in price
Re: How LEDs are made (2014)
#8[dead]
Re: How LEDs are made (2014)
#9I guess I had read this article 12-13 years back. I think it was this same article.
One of the things I vaguely remember was reading somewhere that working on this LED manufacturing severely damages the workers' eyes. I don't know how much of it is true and if it is, whether that is still the case.
Re: How LEDs are made (2014)
#10I wonder why some leds have a high TDP and if even that it is efficienty and how it could be fixed...