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Electronics Forum / Basics / August 2006How Pixel works?
I have done my homework (doing research). And I still like to understand how to activate a pixel with a different color. I know that within a pixel, there are three phosphor dots http://en.wikipedia.org/wiki/Pixel http://en.wikipedia.org/wiki/Pixel_geometry http://electronics.howstuffworks.com/lcd9.htm And millions of of Transistors are needed http://en.wikipedia.org/wiki/Transistor But how exactly this works? How do we control the large number of transistors & pixels? Also, is Pixel same as Dot? Thanks. > Also, is Pixel same as Dot? =============================== To the graphics programmer, the screen is an array of pixels... each pixel is 32 bits...8 bits of Red, Green, Blue and Alpha. So there can be 256 shades of R G and B, for a total of 16 million colors. The Alpha channel is extra cerdit for grad students using Silicon Graphics and Open GL to do transparent overlays and other cool visual effects. > To the graphics programmer, the screen is an array of pixels... each > pixel is 32 bits...8 bits of Red, Green, Blue and Alpha. So there can > be 256 shades of R G and B, for a total of 16 million colors. The > Alpha channel is extra cerdit for grad students using Silicon Graphics > and Open GL to do transparent overlays and other cool visual effects. But I wonder how it works internally within the LCD though. So the subpixel got activated by different level of voltage? And why it is more costly to have lower pixel pitch? (look at the manufacture standpoint) > But I wonder how it works internally within the LCD though. So the ========================================== Each RGB element is a Thin Film Transistor. Each RGB element must be refreshed fast enough to not perceive flicker. |
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