Friday, November 14, 2008
Interesting LG article about LCD TV panels
Here's a sample of an interesting article in LG's Knowledge Base:
There's far more to building an LCD than simply creating a sheet of liquid crystals. The combination of four facts makes LCDs possible:
• Light can be polarized. Liquid crystals can transmit and change polarized light.
• The structure of liquid crystals can be changed by electric current.
• There are transparent substances that can conduct electricity.
An LCD is a device that uses these four facts in a surprising way!
To create an LCD, you take two pieces of polarized glass. A special polymer that creates microscopic grooves in the surface is rubbed on the side of the glass that does not have the polarizing film on it. The grooves must be in the same direction as the polarizing film. You then add a coating of nematic liquid crystals to one of the filters. The grooves will cause the first layer of molecules to align with the filter's orientation. Then add the second piece of glass with the polarizing film at a right angle to the first piece.
Read the rest (with helpful pictures) here: http://lgknowledgebase.com/kb/index.php?View=entry&EntryID=2245
There's far more to building an LCD than simply creating a sheet of liquid crystals. The combination of four facts makes LCDs possible:
• Light can be polarized. Liquid crystals can transmit and change polarized light.
• The structure of liquid crystals can be changed by electric current.
• There are transparent substances that can conduct electricity.
An LCD is a device that uses these four facts in a surprising way!
To create an LCD, you take two pieces of polarized glass. A special polymer that creates microscopic grooves in the surface is rubbed on the side of the glass that does not have the polarizing film on it. The grooves must be in the same direction as the polarizing film. You then add a coating of nematic liquid crystals to one of the filters. The grooves will cause the first layer of molecules to align with the filter's orientation. Then add the second piece of glass with the polarizing film at a right angle to the first piece.
Read the rest (with helpful pictures) here: http://lgknowledgebase.com/kb/index.php?View=entry&EntryID=2245
Labels: LCD, LG, televisions, TV
Subscribe to Posts [Atom]
