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Samsung Develops a Transparent OLED Laptop Screen

Soulskill posted more than 4 years ago | from the harder-to-hide-your-mmo-habit-from-the-boss dept.

Displays 148

Dyne09 writes "The Design blog has posted an entry on Samsung's new laptop with a transparent OLED screen. The photos show a dark-tinted and dimly-lit screen that is fully see-through. While the utility of a see-through laptop probably isn't that high for the average user, several medical and industrial industries could greatly augment design work or frame 3-D models over real life in real-time."

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148 comments

Transparent OLED isn't new (2, Informative)

Karganeth (1017580) | more than 4 years ago | (#30708802)

However, sticking it on a laptop is.

Re:Transparent OLED isn't new (1)

eric31415927 (861917) | more than 4 years ago | (#30709242)

Ian McKellen (Number 2) had a laptop with a see-through screen in AMC's version of The Prisoner.
I only remember it from one scene; I am unsure in which of the six episodes (no pun intended) it appeared.
It looked cool, and I've wanted one ever since.

Apparently, I can now get one.
However, I am sure that it won't be a slick as Number 2's.

1995 calling... (4, Informative)

AliasMarlowe (1042386) | more than 4 years ago | (#30709310)

IBM ThinkPad 755CV had a transparent LCD display (VGA resolution) around 1995. It could be detached from the laptop, and placed on an overhead projector, for making PowerlessPointless-style presentations. This was in the days before projectors were common.

Realistic Uses (4, Interesting)

teeks99 (849132) | more than 4 years ago | (#30708806)

I had two ideas come to mind on ways to use this technology (laptop screens don't really seem like a killer feature).

- Glasses. It would be great to get a screen on the lenses of my sunglasses, most of the time they'd be clear like normal, but info could pop up throughout the day as needed. Or I could sit back and watch a video, and just turn it off if I needed to see something.

- 3D Displays. If one would take many layers of this together, it would be possible to create a 3D display a couple inches deep that would be able to be viewed without any need for glasses. It would be quite limited to the amount of depth available, but even a small amount could be revolutionary.

Re:Realistic Uses (3, Informative)

Anonymous Coward | more than 4 years ago | (#30708874)

It would be great to get a screen on the lenses of my sunglasses

Uh? Move your face next to your screen as close as you wear sunglasses. Do you see anything? Your eyes just can't focus on a screen this close. For this to work you need retinal projection, not a screen.

Re:Realistic Uses (0)

Anonymous Coward | more than 4 years ago | (#30709178)

Of course you can focus on a screen this close with proper optics. Haven't you noticed that there are already head mounted displays just like this?

Re:Realistic Uses (3, Informative)

VinylPusher (856712) | more than 4 years ago | (#30709232)

You noticed the depth of those head-mounted displays? Needed due to all the optics focussing the image into your eyeball (because you're eyes can't manage it due to aforementioned closeness).

Re:Realistic Uses (0)

Anonymous Coward | more than 4 years ago | (#30709460)

Not really, you can just have an option on the OS controlled from a slider on the side that will vary the focus of the image.
You can "unfocus" an image to the point of it appearing to be in the distance.

The retinal projection thing just adds unnecessary bloat to the hardware.

Either that or you can learn to view things out of focus.
I've done it ever since school and have been around computers ever since, don't need any glasses thanks to that bright moment back then.

How about a tablet/laptop (4, Interesting)

Sepodati (746220) | more than 4 years ago | (#30708886)

How about using this on a hybrid laptop/tablet? Instead of having an mechanical swivel for the screen that can break, just have a transparent screen like this. Open it up and it's a laptop. Shut the laptop and the screen mirrors so it's a tablet now. This is assuming you could get the outside (or back of) the screen to have touch capabilities.

-John

Re:How about a tablet/laptop (2, Interesting)

maxume (22995) | more than 4 years ago | (#30708944)

If prices continue to drop, the same thing could be implemented using two screens (I guess the exterior screen would have other semi-useful applications when the laptop was open).

Personally, I think thin and cheap are a much bigger deal for OLEDs than semi-transparency.

Re:How about a tablet/laptop (1)

amRadioHed (463061) | more than 4 years ago | (#30709396)

That's true, OLEDs have the potential of being very cheap to produce. If we ever get there it would be much better to just have two standard non-transparent displays on the laptop.

Re:How about a tablet/laptop (1)

SoupIsGoodFood_42 (521389) | more than 4 years ago | (#30709046)

I guess that's fine if you like looking at the keyboard behind your screen, and whatever is behind you when in laptop mode.

Re:How about a tablet/laptop (1)

obarthelemy (160321) | more than 4 years ago | (#30709068)

good idea. I don' know if a screen can be transparent and touch-enabled at the same time though ?

Re:How about a tablet/laptop (1)

amRadioHed (463061) | more than 4 years ago | (#30709428)

I think the GL-GD900 Crystal, LG's transparent phone, has a see-through touchscreen as a keypad.

Re:How about a tablet/laptop (1)

amRadioHed (463061) | more than 4 years ago | (#30709446)

Sorry not a touch screen, the numbers are printed on. It is a transparent touch surface I meant to say.

Re:Realistic Uses (0)

Anonymous Coward | more than 4 years ago | (#30708888)

- 3D Displays. If one would take many layers of this together, it would be possible to create a 3D display a couple inches deep that would be able to be viewed without any need for glasses. It would be quite limited to the amount of depth available, but even a small amount could be revolutionary.

That's the first thing that came to my mind, and I rushed to post this idea only to find your post already here. :)

One can stack up a lot of such screen one after the other and display a sliced up picture one slice per screen. The picture will be a scan rather than a normal 2D shot and will be sliced up in Z-direction. The Z resolution will depend on number of slices and also on number of stacked up screens.

I hope the tech evolves so that we can have true 3D pixels (voxels?) in a transparent cubic monolithic screen. That would display a real 3D picture instead of just an illusion of 3D which present techs do.

Re:Realistic Uses (1)

amRadioHed (463061) | more than 4 years ago | (#30708958)

This isn't good for glasses. First problem is the focus issue as another person mentioned, but also the fact that everyone else would be able to see what is being displayed. Do you really want your girlfriend to know you only knew it was her birthday because of the reminder that flashed on your glasses?

Displays that project onto semi-reflective glasses are better on both counts.

Re:Realistic Uses (0)

Anonymous Coward | more than 4 years ago | (#30708966)

This could be used as a big HUD to make all kinds of cheap security, surveillance and gaming devices, just imagine it mounted on a taser, laser, gun...

also (2, Insightful)

snarkh (118018) | more than 4 years ago | (#30708972)

Car windows, particularly the windshield.

Re:also (1)

kai_hiwatari (1642285) | more than 4 years ago | (#30709324)

Considering that it is only 40% transparent, it won't be possible to use it in car windshields.

Re:also (1)

Fjandr (66656) | more than 4 years ago | (#30709398)

Considering that it's a brand-new product, the fact that it's already been successfully produced with 40% transparency means it's likely going to be improved significantly through further development. I fully expect the technology, or one very like it, to eventually see use in car windshields.

Re:also (1)

Kral_Blbec (1201285) | more than 4 years ago | (#30709470)

I didnt catch it it mentioned if the 40% is a technological limit or something they chose to make the screen more visible. A way to adjust the transparancy on the fly would be awesome.

Re:also (1)

Hadlock (143607) | more than 4 years ago | (#30709710)

you can adjust transparency with a simple LCD. just adjust the current to fit the level of transparency you need. sort of (but not really) defeats the purpose of an OLED display

Re:also (2, Informative)

serutan (259622) | more than 4 years ago | (#30709392)

That's a great idea. Adding an information display to something that needs to be transparent, like a car windshield, seems like a much better application than making something transparent that shouldn't be, like a laptop screen. I'm surprised Samsung didn't learn anything from the public's reaction to transparent GUI windows. They're kind of cool as a novelty for about 5 minutes, but nobody really wants to use them.

Re:also (1)

robvangelder (472838) | more than 4 years ago | (#30709610)

A police car could see the status of cars as they drive past (speeding / stolen).

or a radar like in Grand Theft Auto?

Re:Realistic Uses (2, Interesting)

gmuslera (3436) | more than 4 years ago | (#30709148)

Combine both into 3d glasses, you give the 3d showing slightly different screen for each eye, Add augmented reality to the mix and you'll have an explosive cocktail. And you can add exrta features like vision enhancement (ok, for that dont need to be transparent, just project camera vision as background) to be able to use them if you are shortsighted

Re:Realistic Uses (1)

pclminion (145572) | more than 4 years ago | (#30709166)

Glasses. It would be great to get a screen on the lenses of my sunglasses, most of the time they'd be clear like normal, but info could pop up throughout the day as needed. Or I could sit back and watch a video, and just turn it off if I needed to see something.

The problem is that the glasses are so close to your eye that you wouldn't be able to focus on anything displayed on them, and even if you could, the rest of the world would be out of focus as you shifted your focal length so close to your eyes.

VR headsets, if you remember those, put the screens several inches from the eye, otherwise it would be anatomically impossible to focus on them. Now, if you were projecting light into the eye, you could theoretically manipulate it to make its focal length equal to the focal length of the eye, but that requires somehow measuring the eye's focal length. And even if you could do THAT, an LCD screen doesn't have the ability to do the kind of focusing needed. What would really work is a system of lasers that directly illuminates the retinas, like old vector output displays. But can you imagine putting something like that in a headset?

cool, absolutely. but... (1, Funny)

Anonymous Coward | more than 4 years ago | (#30708820)

there certainly is some geek coolness in having a transparent display on a laptop, although I question the usefulness of it; particularly when one is playing back pr0n on said laptop.

Re:cool, absolutely. but... (4, Funny)

Tablizer (95088) | more than 4 years ago | (#30708932)

there certainly is some geek coolness in having a transparent display on a laptop, although I question the usefulness of it; particularly when one is playing back pr0n on said laptop.

If you have a gf with a pretty face but an ugly body...

This does have everyday applications! (0)

Anonymous Coward | more than 4 years ago | (#30708834)

While the utility of a see-through laptop probably isn't that high for the average user, several medical and industrial industries could greatly augment design work or frame 3-D models over real life in real-time."

How about a heads-up-display for cars-- you know so I'm not distracted while driving and playing Grand Theft Auto?

Plus this technology is essential if you want to have Minority Report-like hand-waving technology/aerobics, so people can watch you through the screen as you, as in the movie, copy files onto a disk-like thing and carry 10 feet across the room to another computer. How futuristic!

Re:This does have everyday applications! (1)

Seth Kriticos (1227934) | more than 4 years ago | (#30709172)

You are right, this is the future. Right now we are still struggling with this old concept of sending the data trough the network. It would be much more awesome to stay in front of a screen all the time and occasionally walk to the other computer bringing some data with you. This will absolutely solve the obesity problem. Genius!

Re:This does have everyday applications! (2, Funny)

Anonymous Coward | more than 4 years ago | (#30709480)

It's because they ran out of IP addresses and had to use NAT which prevented them from being able to initiate network connections.

Cool for display pieces (1)

yakumo.unr (833476) | more than 4 years ago | (#30708878)

Like meseums, trade shows etc etc, it would really pull people arround them despite only being able to read properly from the one side. Countless movies and TV shows have transparent screens in high tech work places, it's all good as long as it's not too bad on the eyes if it's to be worked with a lot, or if any private data ever needs to be shown it's useless.

Re:Cool for display pieces (1)

ceoyoyo (59147) | more than 4 years ago | (#30708952)

Yeah, CSI is going to be able to save some on their special effects budget. Other than that, it's kind of tough to think of an actual application. The summary makes some pretty fuzzy suggestions, but they don't really seem realistic.

Focus and line of sight (1)

nsrbrake (233425) | more than 4 years ago | (#30708890)

I can't see much use for an overlay unless there is a fixed viewpoint or the display is only used for information that does not need to be synced with what is behind it. Move your head a few centimeters and it'd throw it all askew.

The other problem I see with this, as someone mentioned glasses is the focal distance. The heads up displays and wearable computers, etc, that I've seen used mirrors and optics to achieve a further distance than trying to focus on the lens of your glasses.

Re:Focus and line of sight (1)

uuddlrlrab (1617237) | more than 4 years ago | (#30709116)

Problem solved. [hackaday.com]

Re:Focus and line of sight (1)

nsrbrake (233425) | more than 4 years ago | (#30709602)

That's impressive!

Unfortunately it only applies to one person and must still be some distance away. While the head tracking and perspective changes shown can certainly be applied to some products, it's still very limited imo. This screen is transparent and I wonder about the possible applications as you can't set the focal distance. http://en.wikipedia.org/wiki/Accommodation_(eye) [wikipedia.org] A young eye apparently takes 350ms to refocus, I can't say I'd want to use something like this even with head tracking for anything that may require constant switching between the transparent screen and scene behind. I'd love to know more about the possibility of changing the perceived focal distance and the effect of constantly switching between two distances for a length of time.

A bit late (0)

Anonymous Coward | more than 4 years ago | (#30708898)

Would've been useful back when overhead slide projectors were ubiqutous and video projectors expensive and rare.

Cool tech, all they need to do... (1)

s0litaire (1205168) | more than 4 years ago | (#30708914)

... Is make it a touch screen and shrink the components to a "hand size" grip along the side.

Or

Like a few others suggested; Stick it in a high end luxuary car's windscreen, no need for the driver to move his eyes from the road to see readouts.
(Obligitory M$ joke follows!) Just don't let the car windscreen run windows or the phrase "Blue screen of death" might take on a more perminent meaning.... ^_^

Re:Cool tech, all they need to do... (0)

Anonymous Coward | more than 4 years ago | (#30709024)

Like a few others suggested; Stick it in a high end luxuary car's windscreen, no need for the driver to move his eyes from the road to see readouts.

Cars have Head-Up-Displays since 1988 ;-) [wikipedia.org]. Although OLED-Displays may of course improve the experience.

Re:Cool tech, all they need to do... (1)

kybred (795293) | more than 4 years ago | (#30709060)

Like a few others suggested; Stick it in a high end luxuary car's windscreen, no need for the driver to move his eyes from the road to see readouts.

I don't that would work very well. Current HUDs [wikipedia.org] use an optical system to allow the generate imagery to be focused at infinity, that way the pilot/driver doesn't have to refocus between the outside world and the generated image.

It's not transparent! (1, Informative)

Anonymous Coward | more than 4 years ago | (#30708924)

It's translucent. It if were transparent then it would be clear, instead it's like a dark tinted piece of glass which isn't that easy to see through if you ask me.

Re:It's not transparent! (3, Informative)

HTH NE1 (675604) | more than 4 years ago | (#30708968)

It's translucent. It if were transparent then it would be clear, instead it's like a dark tinted piece of glass which isn't that easy to see through if you ask me.

No, translucency prevents seeing details through the medium, such as the glass you'd use in a bathroom window which allows light to pass through but scatters the photons preventing seeing detail. Transparency is a sliding scale, which can allow various levels of light through or even only certain wavelengths (colors) from 100% clear transparent to nearly opaque.

Re:It's not transparent! (1)

CecilPL (1258010) | more than 4 years ago | (#30709006)

It if were transparent then it would be clear

Transparent means the objects behind the glass are in focus, which they are in this case.

The amount of light the glass lets through is a separate consideration from the transparency/translucency distinction.

It is transparent! (1)

Low Ranked Craig (1327799) | more than 4 years ago | (#30709704)

1 a (1) : having the property of transmitting light without appreciable scattering so that bodies lying beyond are seen clearly

Nook2 (3, Interesting)

eightball (88525) | more than 4 years ago | (#30708980)

Instead of having LED below the e-ink, put it on top of the e-ink. With no current applied to either, you see the e-ink. When you need to use the faster more colorful tech, make the e-ink whitish and turn on the OLED.

Re:Nook2 (0)

Anonymous Coward | more than 4 years ago | (#30709286)

Yeah, that's a good idea.

Re:Nook2 (1)

forand (530402) | more than 4 years ago | (#30709436)

This would cause glare since the OLED will need to have something to protect it thus negating the benefits of the e-ink.

Re:Nook2 (2, Interesting)

eggnoglatte (1047660) | more than 4 years ago | (#30709464)

It is too dim to have a purely reflective technology at the back. The OLED is only 40% transparent, any light bouncing off the e-ink has to pass through the OLED twice (once from the light source to the e-ink, and once form the e-ink to the viewer). At the end you only have 16% of the light being reflected, minus whatever the e-ink absorbs. The reflections of the top of the OLED will be brighter than the displayed information from the e-ink.

How about as an overlayed screen on e-reader? (1)

aodestruction (1582967) | more than 4 years ago | (#30709008)

I would actually like to see something like this overlaying the e-ink screen on an e-reader. The LCD would make taking notes, browsing the web, and possibly even watching videos possible for short periods, and when not in use, the e-ink screen would still save on battery life.

hybrid displays are already in the works (0)

Anonymous Coward | more than 4 years ago | (#30709212)

the real problem I have with e-ink is that it is monochrome. i'd rather them adapt the technology to color somehow and make it cost effective. i understand that a lot of books are just simple text, but the ability to have color and layout would add a great deal to e-books. what is so wrong with just using a pdf as an e-book format anyways? (asides from the lack of drm) I mean pdf was designed to be a replacement for postscript anyways. Seems perfect to me for e-books asides from adobe's tight grip on the format.

Re:hybrid displays are already in the works (1)

maxume (22995) | more than 4 years ago | (#30709254)

Reflow.

(PDF has added support for reflow, but most pdf production is done with a fixed size in mind.)

"Pay attention to me!" (1)

HTH NE1 (675604) | more than 4 years ago | (#30709028)

Samsung's new laptop with a transparent OLED screen

And there was much feline rejoicing.

However, on the issue of privacy, can people on the other side of the screen also see what you have displayed?

Then again, could it be also be used as a tablet without having to flip the screen?

How about black? (0)

Anonymous Coward | more than 4 years ago | (#30709034)

None of the pictures or videos showed the screen displaying anything that was black. Guess we give that up and replace it with "40% transparent gray"

Two thoughts. . . (2, Interesting)

Fantastic Lad (198284) | more than 4 years ago | (#30709036)

This could change the game for small tablets; you could hold the tablet on either side and use your fingers behind the screen to manipulate images without obstructing your view of them.

I've seen variations of such a solution which artificially create a 'finger' effect through graphics with the touch pad on the back of the device, but this would be the real thing.

Interesting.

Also. . .

People are obviously worried about the privacy factor of see-through computer screens, but I could see this being considered a huge plus in the evil corporate work environment; the drones would only be allowed to use laptops where the backside is a window to the front. A lot less Facebook and Farmville would eat into company time that way. Or at least, this may be how the pointy-haired dictator might think when placing bulk-orders for laptops.

-FL

Re:Two thoughts. . . (0)

Anonymous Coward | more than 4 years ago | (#30709220)

Are you kidding me? I'd get nauseous with a see-through laptop screen.

Car Windshield possibilities (1)

grilled-cheese (889107) | more than 4 years ago | (#30709078)

I wouldn't mind having my vehicle gauges and GPS moved onto my windshield. Additionally, it would be nice to play movies on it too (in park of course) since my car has a reasonable surround sound system and soundproofing.

Re:Car Windshield possibilities (1)

ZosX (517789) | more than 4 years ago | (#30709142)

lots of possibilities. displays mounted sunglasses are out, but displays on windows, windshields, helmet visors, etc are all possible. Imagine if your windows had a temperature reading in the corner. People would like that sort of thing. Heck why not make a whole window an interactive display of some sort (just no touchscreen please).

Re:Car Windshield possibilities (1)

ceoyoyo (59147) | more than 4 years ago | (#30709246)

You might not like it so much when it started to get dark and you effectively couldn't take off your sunglasses.

Minority Report? (2, Interesting)

lymond01 (314120) | more than 4 years ago | (#30709100)

If you combine this with Wii-type motion control, I think you have the photo/video system from Minority Report.

Re:Minority Report? (0)

Anonymous Coward | more than 4 years ago | (#30709408)

Which looked good, but would have left you with knackered arms the next day.

First and Largest? (1)

slifox (605302) | more than 4 years ago | (#30709104)

From the article:
"Samsung presents world's first and largest transparent OLED laptop at CES"

If it's the world's first, it's just as much the world's largest as the world's smallest transparent OLED laptop, as well as the brightest and most-dim, the sharpest and most-blurry, etc...

Re:First and Largest? (1)

Paradigm_Complex (968558) | more than 4 years ago | (#30709684)

I could be wrong, but I believe the sentence you're trying to tear apart meant two different things:

(1) This is the world's first transparent OLED laptop.

(2) This is the world's largest transparent OLED laptop.

If interpreted that way, it makes sense.

No Bezel-free Screens - Conspiracy theory (0)

Anonymous Coward | more than 4 years ago | (#30709106)

This supports my theory that LCD screen manufacturers are conspiring not to produce one without a bezel on (at least) one side, which would dramatically reduce the price they can get for larger screens.

Dont buy another LCD until they produce a bezel-free one !

yo dawg... (2, Funny)

ZosX (517789) | more than 4 years ago | (#30709164)

I heard you like windows so I made a window that you can display windows with while running windows, so you can have windows in your window.

Automatic window tinting (1)

uuddlrlrab (1617237) | more than 4 years ago | (#30709180)

If this is low power enough, you could theoretically use this for the tinting in vehicle windows/windshields or even homes; make it a graduated but adjustable auto-tint that works on how much and/or what wavelengths of light sensors detect entering the cabin or room. The best part is, when you leave your car in the sun, instead of having to struggle with a clumsy sun screen that only protects one window, one button press blocks all the windows, keeping the cabin relatively cool by the time you return.

Re:Automatic window tinting (1)

Hamsterdan (815291) | more than 4 years ago | (#30709420)

The rear-view mirror on my Grand Marquis does that when some moron is following me with his high-beam on. And Boeing is using something similar to replace shades in the new 787.

http://en.wikipedia.org/wiki/Electrochromic_devices
http://en.wikipedia.org/wiki/Electrochromatic

Re:Automatic window tinting (1)

dreamchaser (49529) | more than 4 years ago | (#30709640)

Photoelectrochromic windows and the like have been around for quite awhile. Using OLED's for that effect would be pointless IMO. Wrong tool for the job.

Its all fun and games until... (2, Funny)

LunarEffect (1309467) | more than 4 years ago | (#30709204)

you are playing Left 4 Dead and suddenly you see your mother in law appear among the zombies.

MRI/CAT scanners (1)

mikael (484) | more than 4 years ago | (#30709224)

A great application would be for medical ultra-sound visualisation. The latest scanners can generate 3D surfaces which can be viewed on a monitor. There was some experimentation with combining LCD screens with mirrors so that a cross-section view from the sensor could be superimposed on top of the location of the actual sensor.

Imagine if a doctor could slide this screen around a patient and motion sensors could pick up the location of the screen and transform the data from a MRI/CAT scan into a matching projection, all in real-time.

Re:MRI/CAT scanners (1)

lcampagn (842601) | more than 4 years ago | (#30709258)

I'm pretty sure this has already been done. I saw it in Total Recall like 15 years ago.

We all know the first profitable use will be... (4, Insightful)

BlueBoxSW.com (745855) | more than 4 years ago | (#30709240)

Porn.

Re:We all know the first profitable use will be... (0)

Anonymous Coward | more than 4 years ago | (#30709526)

Already happened... take a look at the 2nd image in the article... it's boobs.

Missing a feature (1)

VinylPusher (856712) | more than 4 years ago | (#30709268)

There doesn't seem to be a great deal of control over the actual transparency. It seems that fully white pixels are as opaque as can be whilst fully black are transparent.

I can't really see a point in the transparency, but maybe that's just a result of my underactive imagination. Still, if I were designing something to utilise a transparent display, I'd want to hardware and software to support varying transparency using an alpha channel. RGBA really just makes sense to me as something you'd use on a transparent display.

There's no OS support for such a thing, of course, but apps and drivers could be written to take advantage until OS support were available.

Re:Missing a feature (1)

eggnoglatte (1047660) | more than 4 years ago | (#30709504)

There doesn't seem to be a great deal of control over the actual transparency. It seems that fully white pixels are as opaque as can be whilst fully black are transparent.

It is more likely that all pixels are equally transparent, irrespective of their intensity. It is just that for bright pixels, the emitted ligth is much brighter than the background, so you see the display content, not the background image

visible brightness = emitted light + 0.4 * background

If the emitted light is 0, you just see a dim version of the background. If the emitted light is really bright, it dominates the background to the point where you can't see the background at all.

Safety plus fun (0)

Anonymous Coward | more than 4 years ago | (#30709316)

Just combine it with a naked scanner. No more invasive body checks, just walk by that smiling security officer behind a computer screen. Oh wait. It'd better be one-way.

Transparent screens are old news... (1)

HockeyPuck (141947) | more than 4 years ago | (#30709328)

Back when overhead projectors were the dominant method of displaying information before a large audience (y'know the ones you put clear sheets of plastic on and wrote with a marker), before powerpoint and before projectors that connected to your VGA port. IBM came out with the Thinkpad 755CV [findarticles.com] in which you could remove the backcover of the screen and then place the screen over the light on your overhead projector.

A snap-off screen panel gives the new ThinkPad 755CV the ability to "piggyback" atop many types of standard overhead projectors. Remove the rear panel and the images on the computer's screen become a see-through "slide show" projected on a wall or screen by the overhead's lamp. The contents of any software program or presentation can easily be shared with a group of people.

Back in 1995...

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  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>
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