LG and Samsung Are Making TV Screens Disappear
LG and Samsung unveiled transparent televisions at CES 2024, using OLED and microLED technologies respectively. Both face challenges in transparency, manufacturing costs, and practical applications, limiting home use.
Read original articleTransparent televisions, showcased by LG and Samsung at CES 2024, are innovative displays that allow viewers to see through the screen while still displaying images. LG employs OLED technology, which uses carbon-based compounds that emit light when energized. This method involves arranging red, green, and blue subpixels on a substrate, with transparent conductive traces allowing light to pass through. However, challenges include the need for encapsulation to protect the OLED materials from moisture and oxygen, which affects transparency and limits the ability to create larger displays from smaller panels.
Samsung, on the other hand, utilizes microLED technology, which involves tiny inorganic LEDs that are more efficient and less obstructive to light. MicroLEDs can achieve higher transparency levels and do not require encapsulation, allowing for seamless tiling of smaller panels into larger displays. Despite these advantages, microLED technology faces hurdles in manufacturing costs and achieving uniform brightness and color across displays.
Both technologies currently block some light, making backgrounds appear darker than direct views. While transparent displays are visually striking, they are not yet practical for home use, with potential initial applications in retail signage. The future of transparent displays remains uncertain, as both companies continue to refine their technologies amidst significant engineering challenges.
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- Many commenters question the practicality of transparent TVs for home use, suggesting they may not solve any pressing problems.
- There is significant interest in alternative applications, such as augmented reality, advertising, and public displays.
- Some users express concerns about the technology's usability and the potential for distractions from the background.
- Several comments highlight the existing use of similar technologies in commercial settings, indicating that transparent displays are not entirely new.
- Overall, while some see innovative possibilities, others remain doubtful about consumer demand and the technology's relevance in everyday life.
They went out of their way to say this is NOT because the televisions are inexpensive. It is a design decision. Samsung response was basically a non answer. These companies don’t care about the longevity of their products. They will happily sell whatever sells the best.
And if televisions break every three years, that’s good for business I guess?
The article also fails to mention transparent LCD, which is a closely related cousin with inverse properties: where transparent OLED is emissive and is transparent where it receives black signal, transparent LCD is non-emissive (needs a backlight) and is transparent where the signal is white and opaque to a greater or lesser degree where the signal is black.
Are these displays capable of only emitting light in one direction?
I would think that the light would bleed out both sides.
Also, there are plenty of existing teleprompter solutions using angled glass instead of a transparent led panel.
I can see attractions in restaurants, shops, theme parks, airports, museums, etc but does it matter to consumers other than fancy picture frames/screen savers and showing the weather?
What if the image or text I’m looking at blends in with the color or texture of the real background? That wouldn’t matter commercially where displayed media is more controlled by the owner, but in a house you’re viewing casually.
TVs are so predominant in our lives that room layouts and furniture are often designed around their presence. For example, the main TV in our house sits in a sort of built-in entertainment center/cabinetry. Making it transparent would be of no benefit. Also, many times people are hiding set-top boxes or media servers (and cables) behind the TV. Now those things need an aesthetically pleasing place to live, and cable management becomes 100x more important.
I can see applications for these, but it is going to require designing around them for maximum benefit. That will slow the adoption curve, which slows the price drops, perhaps keeping them in a niche segment for a long time.
I think the big thing here is also allows for transparency with objects and can be great for way finding or augmentation and disappear when not needed.
Some thoughts after using them extensively.
They've been like five years away for five-to-ten years now, and that fact is very sad.
No need for cameras outside to report what's going on to you inside, you can see through.
HUD (E.G: for cars), augmented reality on phones, monitoring for things like patients, babies...
If they manage to deal with the ambient luminosity problem, it can even change the architecture of your room. No more big screens, just windows letting light in, that you can switch to displays when you like.
Even for class room it's better: students will be visible behind their screens to the teacher.
The use-cases presented are:
* Teleprompter-like screen with a camera behind it allowing presenter to look straight into the camera while still seeing the screen.
* Windows in public areas (subway cars, elevators) that display advertisements or animations.
This smells the latest in series of increasingly desperate moves. We've had curved screens, 3D screens, 8K screens, etc. already. Who needs those things? Why buy an 8K TV when there's no 8K content whatsoever.
Most people put their TV in front of a wall. That's because they are kind of big and expensive and you don't want to bump into all the time. Which with an invisible by design thing would be a thing. The value of seeing the wall through the TV is very limited. On the other hand, the value of not seeing the wall when you are watching something is pretty high.
See through screens would be great for AR but AR TVs don't sound like they are going to be a thing. This makes more sense in some kind of AR goggles. I could see some limited role for them for advertising like the article suggests but beyond that not really. That would work with normal screens as well of course and would have for the last few decades. But it's still not that common.
Related
How Cathode Ray Tubes Work. [video]
The video explores CRT display technology, dominant for 70 years before LCDs rose. CRTs use electrons on phosphorus screens, guided by electromagnets. Evolution from B&W to color displays is discussed.
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Sharp Corporation and Semiconductor Energy Laboratory Co., Ltd. achieved a breakthrough by integrating an 8-bit Z80 CPU onto a glass substrate for LCD displays, enabling smaller, lighter, and more reliable digital systems. This innovation opens doors for ultra-thin "sheet computers" and "sheet TVs," with mass production already underway for mobile devices.
Polychromatic Pixels
MicroLED technology advances with Q-Pixel Inc.'s polychromatic pixels offering tuneable wavelengths for superior displays. This innovation simplifies assembly, reduces costs, and boosts pixel density, aiming to make microLED displays more competitive, especially for VR and AR devices.
Ultra-large nano transparent screens may soon be accessible to everyone
A 100-inch Nano Transparent Screen (NTS) with adjustable transparency has been developed, offering clear images at a low cost. This innovation by KIMM and Meta2People enables mass production for widespread use.