LCD is an abbreviation for Liquid Crystal Display and this is the most popular method used by lcd television manufacturers.
The nature of a television image is that it is constantly changing both in colour and in contrast.
An lcd television has a back light permanently turned on, which is the source of a televisions brightness. To create brightness and darkness it must be able to limit or increase flow of this light.
The inherent properties of a crystal will allow this to occur, as firstly a crystal state is cylindrical in nature and therefore has the ability to allow light to pass through; secondly it has a twisted property which can be accentuated dependant on how much electrical charge is submitted. Increase the current and the crystal will tighten and therefore become more opaque in nature. Reduce the current and it will relax and allow more light to pass through. Do be aware though that the complete restriction of light is impossible as a crystal cannot completely inhibit the transfer of light. Also as each pixel is so tightly arranged to the next, even with polarized glass, you do get a cross contamination from one pixel to another. Resultant issue is an inability to achieve a true real black.
As regards creating colour the pixels are subdivided into three coloured crystals based on the primary colours. The interaction between these red, green and blue crystals produces the lcd televisions colour palette or the lcd tv`s contrast ratio!
The matrix of liquid crystals are placed between two pieces of glass which are polarized to focus the light source and give pixel perfect razor sharpness to the proceedings.
Across the whole internal construct of an lcd tv`s panel is a matrix of micro thin transparent transistors. The matrix feeds information via electrical currents to each individual pixel which then controls the feed of information and ultimately the colour and temperature of an individual pixel. This then ultimately creates, over the whole matrix within the lcd television, the image.
This is an over simplified description of how an LCD works but it does highlight the most important area, as to how the different brightnesss and various colours are achieved. Television manufacturers are currently in development to introduce high performance light emitting diodes which will further focus the brightness and allow greater control over pixels. This more focussed approach will allow a more full disablement of a pixel and help achieve that true black everyone is striving for plus with the use of coloured diodes the colour palette of an lcd television will be further enhanced to achieve even greater subjective contrast ratios. - 15266
The nature of a television image is that it is constantly changing both in colour and in contrast.
An lcd television has a back light permanently turned on, which is the source of a televisions brightness. To create brightness and darkness it must be able to limit or increase flow of this light.
The inherent properties of a crystal will allow this to occur, as firstly a crystal state is cylindrical in nature and therefore has the ability to allow light to pass through; secondly it has a twisted property which can be accentuated dependant on how much electrical charge is submitted. Increase the current and the crystal will tighten and therefore become more opaque in nature. Reduce the current and it will relax and allow more light to pass through. Do be aware though that the complete restriction of light is impossible as a crystal cannot completely inhibit the transfer of light. Also as each pixel is so tightly arranged to the next, even with polarized glass, you do get a cross contamination from one pixel to another. Resultant issue is an inability to achieve a true real black.
As regards creating colour the pixels are subdivided into three coloured crystals based on the primary colours. The interaction between these red, green and blue crystals produces the lcd televisions colour palette or the lcd tv`s contrast ratio!
The matrix of liquid crystals are placed between two pieces of glass which are polarized to focus the light source and give pixel perfect razor sharpness to the proceedings.
Across the whole internal construct of an lcd tv`s panel is a matrix of micro thin transparent transistors. The matrix feeds information via electrical currents to each individual pixel which then controls the feed of information and ultimately the colour and temperature of an individual pixel. This then ultimately creates, over the whole matrix within the lcd television, the image.
This is an over simplified description of how an LCD works but it does highlight the most important area, as to how the different brightnesss and various colours are achieved. Television manufacturers are currently in development to introduce high performance light emitting diodes which will further focus the brightness and allow greater control over pixels. This more focussed approach will allow a more full disablement of a pixel and help achieve that true black everyone is striving for plus with the use of coloured diodes the colour palette of an lcd television will be further enhanced to achieve even greater subjective contrast ratios. - 15266
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Armadeus Cornelius has almost 20 years experience in the consumer electronics sector. To find out more go to his excellent web site for more information about Cheap LCD TV Deals or click CHEAP LCD TELEVISION.
