Seoul Viosys begins production of rare-earth-free white light emitter (semiconductor-today.com)
176 points by gmays 17 hours ago
Animats 16 hours ago
> WICOP 3 generates white light from gallium nitride (GaN) alone.
Gallium might be a problem. "China accounted for 99% of worldwide primary low-purity gallium production. The remaining primary low-purity gallium producers outside of China included Japan and Russia. Germany, Hungary, and Kazakhstan ceased primary production in 2016, 2015, and 2013, respectively. Ukraine most likely ceased primary production in 2022. Several new gallium production projects were announced including those in Australia, Canada, Greece, Kazakhstan, and the Republic of Korea."[1]
The price of gallium has increased by a factor of 10 in the last 10 years. It's doubled since last year.[2] A huge new demand for gallium is going to be a problem.
[1] https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-gallium.pd...
clickety_clack 15 hours ago
Is it just uneconomic to extract it in other countries? It seems to be a byproduct of aluminum and zinc mining, and those mines are very widespread.
throw-qqqqq 15 hours ago
> Is it just uneconomic to extract it in other countries?
Yes mostly. The West outsourced this market due to heavy environmental and financial costs of extracting it. It’s sort of the same story as for a lot of the rare earth elements.
skew-aberration 8 hours ago
8note 15 hours ago
Canada's is a addon to the aluminum production line, ao it might not take a whole ton to expand that production
throw-qqqqq 15 hours ago
Rio Tinto is already on it in Quebec. The pilot plant is planned to ramp up production in 2027.
https://www.riotinto.com/en/news/releases/2026/rio-tinto-adv...
aulin 3 hours ago
Isn't GaN already the base for blue led and for all current white-ish led lighting?
Here they are somehow eliminating the need for phosphors for color conversion but they didn't say how.
I mean, if GaN is a problem we are already in a bad shape.
jmyeet 13 hours ago
This is why I laugh every time somebody seriously suggests there's going to be a war with China because the West would collapse without Chinese exports. It's just not going to happen.
The problem with outsourcing all your manufacturing so you can mildly increase profits and destroy any organized labor is that whoever you outsourced it to holds you hostage.
Any talk of this is just propaganda to sell weapons and increase the "defense" budget.
So gallium is a byproduct of bauxite mining but requires some sophistication. China produces 60% of the world's aluminum. India is the second largest producer but doesn't have the infrastructure to extract gallium. That will probably change. But it is a sophisticated process so you need an entire supply chain for that too. China has that. India does not (currently).
But India would avoid the geopolitical issues of being dependent on China or Russia.
Blackthorn 8 hours ago
> This is why I laugh every time somebody seriously suggests there's going to be a war with China because the West would collapse without Chinese exports. It's just not going to happen.
> The problem with outsourcing all your manufacturing
Not having a war is a good thing, not a problem.
adrianN 6 hours ago
mullingitover 12 hours ago
> and destroy any organized labor
Hilariously not any organized labor, just the local group. The largest organized labor group in the history of the world is alive and well, and is headquartered in Beijing.
This was basically just a case of kicking the can down the road really hard. The can is still there, waiting for you, and you are now completely dependent on it (oh and it has nuclear weapons).
idiotsecant 11 hours ago
bawolff 6 hours ago
> This is why I laugh every time somebody seriously suggests there's going to be a war with China because the West would collapse without Chinese exports. It's just not going to happen.
Sounds like all the more reason for china to start a war.
Just having one side dependent isn't going to stop war.
BobbyTables2 5 hours ago
Would it? India has some relations with Russia….
EA-3167 12 hours ago
> This is why I laugh every time somebody seriously suggests there's going to be a war with China because the West would collapse without Chinese exports. It's just not going to happen.
This is almost the exact same argument that was used to justify economic cooperation with Russia, they’d never start a war in Europe because their economy would collapse!
Ooos.
lukan 12 hours ago
jmyeet 12 hours ago
numpad0 an hour ago
IIRC/IIUC, GaN could only deal with UV or at most deep-ish blue, for both input and output, due to bandgap or whatever quantum reasons I don't understand. To create white light from light emitted by a GaN device, it needs to be downconverted into visible range by use of either phosphorous materials or a nanoparticle resembling them that are activated by blue light and emit its own light. On most white LEDs, this is done by that yellow goop of plastic material dabbed on top of blue LEDs.
Could this be like nanostructure based? Like nanoscale etching that messes with the light, created on top of UV LEDs?
kkaske 17 hours ago
What does the color look like? Producing light that falls within the white region of the CIE diagram is one thing… if it’s too yellow or too blue it could be an issue. Maybe that’s something that can be worked out over time.
adrian_b 3 hours ago
The article does not explain what they use, but it seems to imply that there is no fluorescent conversion layer and the white light comes directly from the LED.
That could be done if the LED actually contains a multiple structure combining red, green and blue LEDs, but in the past such a combined LED had the disadvantage that in time the efficiency of the 3 components degraded at a different rate, which resulted in a color shift.
For now, the luminous efficiency of this LED is quite poor, unsuitable for lighting but only for indicator LEDs or display applications, but they claim that for such small LEDs even the traditional LEDs had poor efficiency and they hope to improve the efficiency later to more acceptable levels.
mrheosuper 25 minutes ago
Does that mean the spectrum will have 3(or more) distinct spike at some wavelength , like old CFL ?
joshspankit 15 hours ago
Indeed. Would love to see a spectrograph
wyager 15 hours ago
Even if it's perfectly centered on a nice blackbody point, if the spectral distribution is spiky, it will still look bad in real-world usage
tdeck 9 hours ago
Looking bad isn't necessarily a deal-breaker for many applications, not even for decorative ones. Just look at the piercing bluish white LED Christmas lights that many people have put up, rather than the somewhat more expensive "warm" colored ones.
nomel an hour ago
nomel 12 hours ago
Not sure why this is downvoted. It's simple color theory, and the whole reason the CRI measure exists.
drjasonharrison 5 hours ago
judge2020 7 hours ago
vessenes 13 hours ago
Ooh, cool. I'd like me some luminous concrete please. I like these order of magnitude changes in common technology -- in this case, way smaller minimum size and more efficient per square nanometer -- the use cases language is a good reminder that the innovation part ("Look! This is cool!") often (usually?) precedes the most compelling use cases.
I imagine this is like 20 years away from hitting consumer design, but I bet it'll be used for some cool stuff.
phendrenad2 13 hours ago
I wonder if we'll ever see nanotech xenon arc lamps.
Imustaskforhelp 17 hours ago
> Seoul Biosys plans to broaden its technology applications to augmented reality (AR) displays and optical communication for artificial intelligence (AI) data transmission. They are also developing a method to transmit data using densely arranged micro LEDs around 10µm in size.
Can someone who is an expert on the topic comment about if the statement regarding AI is true and if so then by how much (and how big/small of a problem it is), or if the Company is suggesting it out of pure hype of AI mania.
> Market research firm Omdia projects that the micro LED display market revenue will grow from $10.54 million this year to approximately $6.8 billion by 2032, particularly in applications for smart glasses and ultra-small displays.
> The WICOP technology involves directly mounting LED chips onto substrates without separate wires or packaging. Seoul Semiconductor and Seoul Biosys have been developing ultraviolet (UV), blue, green, red, and infrared (IR) micro LEDs based on this technology, and have now expanded its application to include white light.
Fascinating results nonetheless even discounting AI use. Having half the price is insane, also 10.54 million seems incredibly small and 6.8 Billion is a little insane. Kinda wild to see such massive growth expected in such short amount of time.
toast0 16 hours ago
> > optical communication for artificial intelligence (AI) data transmission.
> if the Company is suggesting it out of pure hype of AI mania.
IMHO, this is pretty transparently r&d for better? data transmission attached to the trend of the day that does a lot of data transmission. Where better is higher bandwidth, lower cost, etc.
AI is the current trendy thing, but better data transmission will always have applications.
ChrisMarshallNY 16 hours ago
I remember attending a "pitch night," at a local incubator, about nine or ten years ago, when crypto was the new hotness.
One of the pitches was for a fairly good nonprofit service. I thought it was a good idea. Sort of a "help people that help people" thing. I can dig that.
At the very end of the pitch, the last thing the young lady said, was "And we're looking at implementing blockchain technology in our service."
I don't remember exactly what the service was, but it clearly had no applications for distributed-key tech.
I think it probably cost her the backing. No one was fooled. I think someone told her that she had to mention blockchain, somewhere.
NetMageSCW 14 hours ago
Seems like pretty good for TV backlighting?
wiml 16 hours ago
The article is riddled with AI errors (for example, the company's name is Viosys, not Biosys).
Looks like the innovation here is the multi-wavelength LED, some kind of multiple-quantum-well thing maybe?
dang 16 hours ago
Yikes. We've changed the URL from https://www.ajupress.com/view/20261028171670308 (and banned that site). I replaced it with the article that Google returns for the title, which looks like it might be the original source, or at least closer to it.
jdorian 2 hours ago
Might want to consider not doing that.
See also the other comments here: https://news.ycombinator.com/item?id=50328023 V/F doesn't really exist in Korean and B equivalent in latin character/ English sound gets used instead.
And many Korean legitimate news sites use AI to translate their articles to English (and other languages).
Never heard of Ajupress, but they seem legitimate based on short research. More than this semi conductor today site I'd say. The news site being Korean, would think they're way more likely to be the original source, which then got picked up by the semi conductor site.
This is their original article, in Korean, if you prefer original sources, in their respective language: https://www.ajunews.com/view/20261028171303299
snailmailman 16 hours ago
Fwiw korean doesnt have a ‘V’ sound/character at all, and the V/B switch is quite common on Korean words that come from English. For example, “video” in Korean gets written with ㅂ at the start, and sounds more like “bideo”. And the same character is used in the Korean/Hangul version of their written company name.
almyk 10 hours ago
Yeah, pronounced in korean it definitely is more similar to Biosys than Viosys. But since they have written it as Viosys in all english documentation and websites it is very suspect that the article writer would misspell it like that. So probably AI translating a korean source or something, but AI also does these mistakes much less often these days.
coderintherye 16 hours ago
Seems the AI translation changed the name a bit as it is Seoul Viosys, at least according to their website https://www.seoulviosys.com/en