SoylentNews is people
SoylentNews
Samsung to Cease Traditional LCD Production, Move To Quantum Dot OLEDs
According to a report from Reuters, Samsung Display will cease production of traditional LCD displays by the end of the year. The move comes as the company is apparently turning its full efforts away from traditional liquid crystal displays and towards the company's portfolio of quantum dot technology. Building off of the Reuters report, ZDNet is reporting that Samsung is dropping LCD production entirely – including its quantum dot-enhanced "QLED" LCDs – and that their retooled efforts will focus on QD-enhanced OLED displays. A decision with big ramifications for the traditional LCD market, this means that by the end of the year, the LCD market will be losing one of its bigger (and best-known) manufacturers.
As recently as last year, Samsung Display had two LCD production facilities in South Korea and another two LCD plants in China. Back in October, 2019, the company halted production [in] one of the South Korean factories, and now plans to suspend production of LCDs at the remaining three facilities due to the low profitability and oversupply of traditional LCDs.
(Score: 4, Interesting) by DannyB on Thursday April 02 2020, @08:14PM (6 children)
This reminds me of something I read on the green site long ago. Maybe in the early 2000s.
Suppose at night, in a dark room, someone is using a computer. The glow form the monitor can be seen from the room's window. Someone in a van can use a telescope to get a look at any of the light reflected from the CRT. Either onto a wall / ceiling, or the window shade, etc.
This light is flickering at very high speed. First you get the line rate right for the expected number of lines. Take your pick there weren't that many. 640x480, 1024x768, etc. Then take a "guess" at the flicker rate per line and you can crudely reconstruct a live image of what's on that CRT.
I don't have a link. I described the above in my own words from memory of an article I found interesting.
The lower I set my standards the more accomplishments I have.
(Score: 3, Interesting) by MostCynical on Thursday April 02 2020, @08:40PM
now you can do this [wired.com] (also described here [newatlas.com].)
"I guess once you start doubting, there's no end to it." -Batou, Ghost in the Shell: Stand Alone Complex
(Score: 2) by acid andy on Friday April 03 2020, @11:22AM
I wonder if the light from a multi-monitor setup would be enough to make the signal too hard to interpret. I guess if one of the monitors was scanning while the others were doing the vertical blank, even for a moment, van (wo)man would have got you.
If a cat has kittens, does a rat have rittens, a bat bittens and a mat mittens?
(Score: 2) by Muad'Dave on Friday April 03 2020, @12:00PM (3 children)
That sounds like Van Eck phreaking [wikipedia.org] but with the primary signal instead of sideband data. Read Cryptonomicon for an example.
(Score: 2) by DannyB on Friday April 03 2020, @03:35PM (2 children)
The article I remember was based on the flickering light from the CRT, collected optically, from a distance.
But side channel EM emissions are also interesting in a similar way.
The lower I set my standards the more accomplishments I have.
(Score: 0) by Anonymous Coward on Saturday April 04 2020, @12:51AM (1 child)
https://en.wikipedia.org/wiki/Tempest_(codename) [wikipedia.org] is probably going to get you close to what you are looking for. Some monitors and programs used to come with TEMPEST mitigation measures. Those flat screens were a pain in the ass to read looking straight on, let alone from the side. However, I can't find any examples because someone has a "tempest" brand monitor now.
(Score: 2) by acid andy on Saturday April 04 2020, @02:04AM
Sounds like a good conspiracy (theory?).
If a cat has kittens, does a rat have rittens, a bat bittens and a mat mittens?