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  • [Music]

  • So it might not look like it right now, but I'm in the back of a semi-truck trailer. LG

  • brought me out to Minneapolis to show off their OLED experience – a traveling road

  • trip inside of a semi-truck with all of their OLED technology. They say there's a transparent

  • OLED in here somewhere. It should be pretty interesting.

  • Let's get started.

  • [Intro]

  • So in order to understand how a clear TV is even possible, first we need to understand

  • the technology behind LCDs and OLEDs. So when you walk into a room at first glance the TVs

  • might appear very similar. But in fact, LCD's are very different than OLEDs. So this is

  • an LCD TV torn apart section by section. You can see the back plate here with individual

  • LED strips running down. Then there's separate layer that's a reflector. Each of these LEDs

  • poke through the reflector and then get diffused by this panel. And then get illuminated by

  • several optical sheets before creating an image that shines out the front.

  • So you can see that LCDs are rather complicated inside and that's kind of what makes them

  • so thick. It needs each layer in order to function. Now OLEDs, on the other hand, don't

  • need all these layers. An OLED TV is just a single panel that displays the whole image.

  • And each of those 8 million pixels light themselves individually which makes the color more vibrant

  • because the back light isn't washing out the colors as it shines through the pixels like

  • it is on an LCD.

  • Because of that single panel, an OLED TV tends to be a lot more vibrant and vivid than an

  • LCD because you're getting the image directly from the source instead of spit out through

  • multiple layers. I'm going to put these two images side by side, and try to tell me which

  • TV is which using just your eyes.

  • So here's the direct comparison between the OLED and the LCD panels. I'm going to have

  • you guys guess which one is which. An easy way to tell is just by looking at the blacks.

  • The OLED panel has 8 million pixels working together simultaneously while the LCD has

  • LED panels, but 480 of them.

  • You can see the blacks on one TV are actually pitch black because the pixels are turned

  • off, where the LCD might be a tad bit grayer because there's a back light. Those LED panels

  • are lit up behind the pixels and it doesn't allow the TV to get pitch black.

  • So looking at this star field you can see the stars start to appear on the OLED sooner

  • than on the LCD because the blacks aren't quite as black on the LCD as they are the

  • OLED.

  • So because of the incredible thinness on that single OLED panel, it's the same technology

  • that's used a lot in cell phones, which means that a TV can be even more thin than a cell

  • phone. Which makes the whole thing lighter and easier to mount as well.

  • So one perk of an OLED panel is that it can be viewed from any angle. The image won't

  • change. Where with LCDs the picture changes depending on where you're standing. OLED panels

  • have a bit more customization as well. This one has sound that actually plays through

  • the screen. Because of the thinness of the OLED panels, the speakers are built into the

  • screen and the sound emanates out the front actually causing the screen to vibrate. This

  • sound technology is only found in the Sony OLED TVs. Because each pixel in an OLED display

  • produces it's own light, it's more efficient than an LCD, meaning that it produces less

  • of those harmful blue light rays that keep you up at night or sometimes cause headaches.

  • So now that we understand the difference between LCDs and OLED technology, we can understand

  • how a transparent TV works. Because there's only one singular panel, each time the pixel

  • turns off, it's just gone, which allows you to see through the TV to the other side.

  • So when the pixels are lit up, the TV stops being transparent. Only when the pixels go

  • to black and starts letting the light through and you can see my hand behind the image.

  • You might be asking yourself, 'What does a transparent TV do? Like what is it good for?'

  • I can think of several different applications for it. Like in heads up displays in cars

  • or fighter jets. Or like augmented reality inside of your sun glasses overlaying things

  • on the stuff you see around you. Or you can have a window built out of a transparent TV

  • so you can see the weather or the news as you're looking out into nature.

  • So these transparent OLED panels are not commercially available just yet. The only place you can

  • see them is on the OLED TV Tour. I'll put the link in the description so you can find

  • out where they're headed next.

  • So LG didn't make this giant custom OLED trailer just for me, they made it for you guys. They

  • have a road trip planned across the United States to 26 different cities. So if you visit

  • one of the 26 locations where this trailer is going to be and buy an OLED TV, you can

  • get 10% back on a Best Buy gift card. If you take a picture of yourself with the OLED TV

  • trailer and post it to social media, you could also have a chance to win a 65 inch OLED TV.

  • I'm pretty excited about where TV technology is headed, especially the transparent stuff.

  • Huge thanks to LG for inviting me out to see their OLED trailer. If you have any questions

  • leave them down in the comments. I'll be there to answer them. And I hope you have a chance

  • to come see this transparent TV for yourself. Thanks a ton for watching, and I'll see you

  • around.

[Music]

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B1 中級

我找到了一臺透明電視!- 它的工作原理是什麼?OLED與LCD的對比 (I found a Transparent TV! - How does it work?! OLED vs LCD)

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    林宜悉 發佈於 2021 年 01 月 14 日
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