The TVs are today something extremely common. People around the world enjoy watching TV. Many of them, though, have absolutely no idea what is hidden behind the screen. At the moment, the liquid-crystal display TVs, or LCD TVs, are the most sold and most watched televisions around the world.
The cold cathode fluorescent lamps provide light, so the colored image and the black image filter white light. Then millions of shutters that are positioned in a grid, open and close so they allow only the needed amount of light to go through. All these shutters are paired, one by one, with colored filters, which have the sole purpose to remove all the colors excepting red green and blue. A shutter-pixel pair makes a sub-pixel.
You can just say that sub-pixel is a little part of a pixel. It cannot be seen by humans eye, even if you are close to the screen and you look, you will not make the difference. When you watch TV, you see colors, millions of colors, all at the same time on the same screen. These colors are made of pixel, and each little dot represents a pixel. A pixel is made of several sub-pixel, that combined, form the colored dot that you see on the screen.
The LCD TVs are so thin because they are made of rod-shaped polymers. These, together, form thin layers. And when these layers gather, the screen is obtained. Because of the nematic liquid crystals, the layers are being kept together.
The LCD TVs have a screen covered in two glass sheets. The layers made of rod-shaped polymers are placed between these glass sheets. Depending on the size, the glass sheets can be replaced by thin plastic sheets. The thin plastic sheets take the spot of glass sheets if the screen is under 30 inches big.
Even if you think the rear glass sheet and the front glass sheet are exactly the same, there are some differences. On the one hand, the rear sheet is made of polarizing film, glass sheet, addressing electrodes, active matrix components and directors. The front sheet, on the other hand, is a little bit different. It got color filters components instead of active matrix components. Not every sandwich has the lower part identical to the upper part.
There is a huge obstacle that makes this challenge so difficult, and that is the deposition of the active matrix components. Their failure rate is quite high, this being the reason why the process is a really hard thing to achieve. But this problem was solved, and the prices dropped drastically. Today, many people enjoy their LCD TVs and the good quality images they provide.
The cold cathode fluorescent lamps provide light, so the colored image and the black image filter white light. Then millions of shutters that are positioned in a grid, open and close so they allow only the needed amount of light to go through. All these shutters are paired, one by one, with colored filters, which have the sole purpose to remove all the colors excepting red green and blue. A shutter-pixel pair makes a sub-pixel.
You can just say that sub-pixel is a little part of a pixel. It cannot be seen by humans eye, even if you are close to the screen and you look, you will not make the difference. When you watch TV, you see colors, millions of colors, all at the same time on the same screen. These colors are made of pixel, and each little dot represents a pixel. A pixel is made of several sub-pixel, that combined, form the colored dot that you see on the screen.
The LCD TVs are so thin because they are made of rod-shaped polymers. These, together, form thin layers. And when these layers gather, the screen is obtained. Because of the nematic liquid crystals, the layers are being kept together.
The LCD TVs have a screen covered in two glass sheets. The layers made of rod-shaped polymers are placed between these glass sheets. Depending on the size, the glass sheets can be replaced by thin plastic sheets. The thin plastic sheets take the spot of glass sheets if the screen is under 30 inches big.
Even if you think the rear glass sheet and the front glass sheet are exactly the same, there are some differences. On the one hand, the rear sheet is made of polarizing film, glass sheet, addressing electrodes, active matrix components and directors. The front sheet, on the other hand, is a little bit different. It got color filters components instead of active matrix components. Not every sandwich has the lower part identical to the upper part.
There is a huge obstacle that makes this challenge so difficult, and that is the deposition of the active matrix components. Their failure rate is quite high, this being the reason why the process is a really hard thing to achieve. But this problem was solved, and the prices dropped drastically. Today, many people enjoy their LCD TVs and the good quality images they provide.
About the Author:
Andrew Johnson is passionate about electronics. If you want more info about LCD TVs or are searching for a trusted electronics retailer please take a look at ebuyer.com
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