An an LCD TV or "transmissive" display, a light source shines through a panel of liquid crystals in order to display an image. A white diffusion panel behind the LCD redirects and scatters the light evenly to provide a more uniform image than most competing technologies.
#break#
The LCD face consists of two transparent layers which polarize a liquid crystal layer sandwiched in between. The front layer of glass is etched with a grid pattern on the inside surface to form a template for the liquid crystals. Liquid crystals are rod shaped molecules that bend light in response to an electric current; the crystals align so that no light can pass through. Each crystal acts like a camera's shutter, either blocking light or allowing it to pass through. A pattern of transparent or dark crystals forms the image. This same technology has been around for awhile, even in such unsophisticated items as digital watches.
#break#
LCD TVs use an "active matrix" LCD; the most advanced type of LCD. The active matrix design is based on TFT, or thin film transistors. These are tiny switching transistors and capacitors that are arranged in a matrix on a glass substrate, they switch the LCD pixels on and off. In a color TV's LCD, each color pixel is created by three sub-pixels with red, green, and blue color filters.
#break#
One of the biggest challenges for LCD TV manufacturers has been speeding up the pixel response time, (how fast an individual pixel's color can change without blurring) so that fast moving images don't exhibit motion lag or "ghosting". This is especially critical for larger-screen LCD TVs, or for LCD TVs on which much of the viewing will be HDTV, or DVD movies.
#break#
An important difference between LCD technology and Plasma is that an LCD screen doesn't have a coating of phosphor dots; LCD TVs color is created through the use of filters. This keeps image burn-in from being a problem--- which is good news in-particular for people who might use a video gaming system or PC on their TV. Another benefit of owning an LCD TV is the energy efficiency of this technology. LCD TVs typically consume 60% less power than comparably sized tube-type, direct-view TVs.
#break#
In most ways that really matter there isn't much difference between LCD TVs and Plasma TVs. Both of these highly popular types of flat panel TVs are thin enough to be placed virtually anywhere, and both produce images that are startlingly clear, sharp, and bright. The most notable difference is screen size. The majority of LCD TVs have a screen size measuring 30 inches and smaller. Plasma TVs are, for the most part, uninhibited by measurement restrictions.
#break#
Basically, LCD and Plasma TVs are different approaches to the same result because the both create superior images using radically different technology.
#break#
For a color on a pixel to get activated in an LCD monitor, a current runs through the crystals to change its state and produce color. The response time is the amount of time the crystals in the panel take for them to move to an on state from an off state. The rising response time is the amount of time it takes for the crystals to turn on, and the falling time is the time it takes for the crystals to move to an off state from an on state.
#break#
The rising time tends to be very fast on LCD monitors, but the falling time is usually slower, causing a blurred effect on vivid, moving images on black backgrounds. The lower the reseponse time, the lower the blurred effect on the monitor. Today, response times also refer to the gray to gray rating that produces a lower speed than the traditional response time.
#break#
LCD monitors produce the image through a film with a current running through the pixels. This current activates the shades of color on the pixel. The problem with LCD films is that the colors are only accurately shown when the screen is viewed straight on. When the viewer is looking at it from a perpendicular angle, the colors tend to look washed out. The quality of LCD monitors is rated according to their vertical and horizontal viewing angles. The rating is done in degrees, using the arc of a semicircle with its center perpendicular to the LCD monitor. A 180-degree viewing angle means that the LCD monitor can be viewed from any angle in front of the screen. Higher viewing angles are generally preferred over lower angles.
#break#
LCD monitors can only display a single resolution, which is called a native resolution. The native resolution is the physical number of the vertical and horizontal pixels that the LCD matrix display is composed of. When an LCD computer display is set at a resolution lower than the native resolution, the monitor will use only a visible area or it will need to do extrapolation. Extrapolation is when multiple pixels are blended together to come out with a similar image to what would be displayed if the monitor were to were to show it at the given resolution. However, this can result in fuzzy image quality. Some common native resolutions are 1024?768 for 14-15? monitors and 1920?1200 for 24? widescreen monitors.
#break#
What makes LCD display monitors different from the traditional CRT monitors is that actual screen dimensions are used to market LCD monitors. This is the screen?s displayable area, from the upper corner to the lower corner of the display. The aspect ratio of the screen is one of the more confusing parts about understanding LCD monitors. Most people are used to CRT displays, which has a 4:3 ratio of vertical to horizontal measurement. LCD screens, however, are marketed as wide screen displays, which looks at the diagonal measurement. However, its aspect ratio is still very similar to the wide screen TV?s 16:9 display. Make sure you look at the horizontal and vertical measurements as well as the aspect ratio of the LCD screen.
#break#
HiColor Technology has been successfully developed by AUO using CCFL backlights to increase color saturation by 33% as compared to conventional LCD screens. Following the latest development trend in LEDs, AUO developed HiColor using RGB LED backlights, which can reach 105% NTSC while providing natural performance of red, green and blue lights and enabling rich, bright, and vivid display colors.
#break#
AUO also developed several techniques to improve LED backlights? image performance. For instance, Color Management eliminates artificial color caused by inconsistencies between the signal and the light source. The intensity of the RGB LEDs can be changed using the Flexible Color Temperature Setting without losing luminance. Other advantages of HiColor Technology includes instant light, mercury and lead free, low temperature start, faster response time, and vibration and shock safe.
#break#
If this doesn't get you excited, then nothing will. LCD TVs have become all the rage and there is nothing better than a big screen TV. And when you couple LCD TV with HD TV, look out. An amazing physical display combined with a fantastic output. This is what is happening in LCD TV technology today.
#break#
If you are like most people looking to replace your TV, you?ve probably been paying close attention to High Definition Television sets (HD-TV). Unlike the previous generation of TV, which used analog signals to transmit information, HD-TVs use digital signals to transmit a signal and receive and display information directly on the television set. The HD-TVs also use a High-Resolution digital television set and Dolby Digital surround sound. The combination of the two creates incredible pictures and sounds ? the best available on the market to date. HD-TV television offers viewers a level of detail they haven't seen before: including a resolution about five times higher than that of analog TV.
#break#
The main thing to remember when you are shopping for HD-TV set is that just because a television is ?digital? it does not mean it is necessarily ?HD-TV compatible?. There are two levels below the HD level (standard definition TV and enhanced definition TV), both of which are vastly better than analog televisions but still of considerably lower quality than an LCD TV- HD-TV set. Since the FCC has mandated that all television sets eventually switch from analog to digital, you should know the differences between the different types of digital TVs.
#break#
Here are some tips. When looking to purchase an HD-TV, remember to compare the difference in picture resolution, audio features, and pixels. HD-TV requires a minimum of 720 horizontal scanning lines (enhanced definition TV, while considerably higher than standard definition TV, only features a minimum of 480 scanning lines) and the resolution on an HD-TV is 1920 x 1080 compared to enhanced definition TV, which only has a resolution of 1280 x 780.
#break#
When you experience a HD-TV image and then compare it to other TVs' technology on the market, the difference will be clear. With ?HD? everything looks and sounds far more realistic than on any other type of system. We think that once you see a big screen LCD TV with HD-TV, the choice will be clear.
#break#
This is just the tip of the iceberg when looking for a HD LCD TV. In fact, many of the most important tips haven't been mentioned here. Learn about LCD TVs before making a purchase.
#break#
An LCD TV, which stands for Liquid Crystal Display Television, is a type of technology that greatly differs from CRT or plasma output. To give you a better idea, LCD technology is the same that is used in the screen of a laptop computer.
#break#
During their earliest years, the main problem with LCD TVs, much like that of the laptop computer screen, is that you had to be looking straight at the screen in order to view it perfectly. Being off to an angle or in another room would prevent you from being able to see the screen. If you have a laptop computer, you are likely already familiar with this fact. However, manufacturers have attempted to correct the issue with angled viewing of LCD TVs over the years. Today, LCD technology has become very popular in the world of television.
#break#
When shopping for LCD TVs, it is a good idea to view video images at various angles rather than just simply standing directly in front of the unit. Step off to an angle from each side of the television, walk a distance away and see if the screen remains visible. This will help to determine whether or not the television will be a nice addition to your home. While the LCD technology was long thought to be better suited for compact televisions, they later made their big screen debut. In 2005, Samsung unveiled an 82" LCD big screen television.
#break#
When selecting LCD TVs, take a moment to make sure that the cost is fair for the features that you are getting. When it comes to current technology, you will truly get what you pay for. It is also important to take special notice of the manufacturer?s warranty, which is commonly available with all new purchases. In order to receive complete coverage, the owner must retain their original sales receipt and follow the instructions listed on their warranty card.
#break#
Saving paperwork, including warranty documentation, will cause less of a headache in the future should the unit need to be serviced during the warranty period. When you are talking about spending several hundred of even thousands of dollars on a television, there is no better reason to take full advantage of the warranty.
#break#
If you are still curious about whether or not an LCD TV is right for you, compare the features with that of plasma and CRT models. Don?t forget to compare the features, the costs and also the manufacturer?s experience in creating quality electronics. When you are spending a significant amount of money, you will want to know that the manufacturer is one that is familiar with current technology and has a reputation to back it up.
#break#
Looking for that new TV set? You're no doubt looking for a LCD (or liquid crystal display) TV, but know all too well that they can be very expensive, especially the high definition LCD models. This is true, but there are in fact discount LCD TVs out there to be found. Post holiday sales when retailers pull out all the stops price wise in a mad scramble to get customers into their shops can be an excellent time to find LCD TV sets at a bargain price.
#break#
Floor models are another good way to obtain discount LCD TVs from retailers; there is generally a deep discount on merchandise sold minus it's original packaging. If you can do without that large box sitting around your living room, you're in luck, as well as a little richer than you'd be with a "brand new" model.
#break#
Another option for discount LCD TVs is of course to buy last season's model; make sure that the features you want are all present in the model you've been eying up at your local electronics shop. For instance, it is important to remember that not every large screen flat panel unit is necessarily high definition. The consumer should carefully check specifications of each model before buying. These models may in fact be high definition, enhanced definition, or neither of those things. The common assumption is that if it walks like a duck does not always hold true here.
#break#
So now that you have a few tips on where, when and how to look for a bargain on a LCD TV, what model should you be looking for? That all depends - the best LCD TV for you may not be exactly what someone else wants from their set. Think about your needs and wants before you go shopping for that LCD set.
#break#
Here are a few general rules of thumb to keep in mind when looking for that perfect TV set. If you play a lot of computer games or would like the option of using your television as a monitor for your computer, you'll want a model with an input for that; the best LCD TV models will have these and are excellent at displaying images and data from computer input sources. Other than that feature, the top concern for most is color accuracy and contrast. Inferior models tend to have lower accuracy and less contrast, while the better ones will have greater levels of both. The best way to evaluate this is to look closely at several different LCD TVs and compare the darkness of dark colors, especially blacks on each. The darker they are able to render black, the better the color accuracy and contrast.
#break#
Regardless of which model you're looking for, a LCD TV is almost certainly in your future. The cathode ray tube based television is rapidly becoming a thing of the past. Due to their high quality, sharp pictures and lightness (a great thing, anyone who has ever struggles with an old console TV set up several flights of stairs will tell you), they are certainly the wave of the future for home entertainment systems.
#break#
Discuss
Add this link to...
Tell a friend
Bury
#break#
The LCD face consists of two transparent layers which polarize a liquid crystal layer sandwiched in between. The front layer of glass is etched with a grid pattern on the inside surface to form a template for the liquid crystals. Liquid crystals are rod shaped molecules that bend light in response to an electric current; the crystals align so that no light can pass through. Each crystal acts like a camera's shutter, either blocking light or allowing it to pass through. A pattern of transparent or dark crystals forms the image. This same technology has been around for awhile, even in such unsophisticated items as digital watches.
#break#
LCD TVs use an "active matrix" LCD; the most advanced type of LCD. The active matrix design is based on TFT, or thin film transistors. These are tiny switching transistors and capacitors that are arranged in a matrix on a glass substrate, they switch the LCD pixels on and off. In a color TV's LCD, each color pixel is created by three sub-pixels with red, green, and blue color filters.
#break#
One of the biggest challenges for LCD TV manufacturers has been speeding up the pixel response time, (how fast an individual pixel's color can change without blurring) so that fast moving images don't exhibit motion lag or "ghosting". This is especially critical for larger-screen LCD TVs, or for LCD TVs on which much of the viewing will be HDTV, or DVD movies.
#break#
An important difference between LCD technology and Plasma is that an LCD screen doesn't have a coating of phosphor dots; LCD TVs color is created through the use of filters. This keeps image burn-in from being a problem--- which is good news in-particular for people who might use a video gaming system or PC on their TV. Another benefit of owning an LCD TV is the energy efficiency of this technology. LCD TVs typically consume 60% less power than comparably sized tube-type, direct-view TVs.
#break#
In most ways that really matter there isn't much difference between LCD TVs and Plasma TVs. Both of these highly popular types of flat panel TVs are thin enough to be placed virtually anywhere, and both produce images that are startlingly clear, sharp, and bright. The most notable difference is screen size. The majority of LCD TVs have a screen size measuring 30 inches and smaller. Plasma TVs are, for the most part, uninhibited by measurement restrictions.
#break#
Basically, LCD and Plasma TVs are different approaches to the same result because the both create superior images using radically different technology.
#break#
For a color on a pixel to get activated in an LCD monitor, a current runs through the crystals to change its state and produce color. The response time is the amount of time the crystals in the panel take for them to move to an on state from an off state. The rising response time is the amount of time it takes for the crystals to turn on, and the falling time is the time it takes for the crystals to move to an off state from an on state.
#break#
The rising time tends to be very fast on LCD monitors, but the falling time is usually slower, causing a blurred effect on vivid, moving images on black backgrounds. The lower the reseponse time, the lower the blurred effect on the monitor. Today, response times also refer to the gray to gray rating that produces a lower speed than the traditional response time.
#break#
LCD monitors produce the image through a film with a current running through the pixels. This current activates the shades of color on the pixel. The problem with LCD films is that the colors are only accurately shown when the screen is viewed straight on. When the viewer is looking at it from a perpendicular angle, the colors tend to look washed out. The quality of LCD monitors is rated according to their vertical and horizontal viewing angles. The rating is done in degrees, using the arc of a semicircle with its center perpendicular to the LCD monitor. A 180-degree viewing angle means that the LCD monitor can be viewed from any angle in front of the screen. Higher viewing angles are generally preferred over lower angles.
#break#
LCD monitors can only display a single resolution, which is called a native resolution. The native resolution is the physical number of the vertical and horizontal pixels that the LCD matrix display is composed of. When an LCD computer display is set at a resolution lower than the native resolution, the monitor will use only a visible area or it will need to do extrapolation. Extrapolation is when multiple pixels are blended together to come out with a similar image to what would be displayed if the monitor were to were to show it at the given resolution. However, this can result in fuzzy image quality. Some common native resolutions are 1024?768 for 14-15? monitors and 1920?1200 for 24? widescreen monitors.
#break#
What makes LCD display monitors different from the traditional CRT monitors is that actual screen dimensions are used to market LCD monitors. This is the screen?s displayable area, from the upper corner to the lower corner of the display. The aspect ratio of the screen is one of the more confusing parts about understanding LCD monitors. Most people are used to CRT displays, which has a 4:3 ratio of vertical to horizontal measurement. LCD screens, however, are marketed as wide screen displays, which looks at the diagonal measurement. However, its aspect ratio is still very similar to the wide screen TV?s 16:9 display. Make sure you look at the horizontal and vertical measurements as well as the aspect ratio of the LCD screen.
#break#
HiColor Technology has been successfully developed by AUO using CCFL backlights to increase color saturation by 33% as compared to conventional LCD screens. Following the latest development trend in LEDs, AUO developed HiColor using RGB LED backlights, which can reach 105% NTSC while providing natural performance of red, green and blue lights and enabling rich, bright, and vivid display colors.
#break#
AUO also developed several techniques to improve LED backlights? image performance. For instance, Color Management eliminates artificial color caused by inconsistencies between the signal and the light source. The intensity of the RGB LEDs can be changed using the Flexible Color Temperature Setting without losing luminance. Other advantages of HiColor Technology includes instant light, mercury and lead free, low temperature start, faster response time, and vibration and shock safe.
#break#
If this doesn't get you excited, then nothing will. LCD TVs have become all the rage and there is nothing better than a big screen TV. And when you couple LCD TV with HD TV, look out. An amazing physical display combined with a fantastic output. This is what is happening in LCD TV technology today.
#break#
If you are like most people looking to replace your TV, you?ve probably been paying close attention to High Definition Television sets (HD-TV). Unlike the previous generation of TV, which used analog signals to transmit information, HD-TVs use digital signals to transmit a signal and receive and display information directly on the television set. The HD-TVs also use a High-Resolution digital television set and Dolby Digital surround sound. The combination of the two creates incredible pictures and sounds ? the best available on the market to date. HD-TV television offers viewers a level of detail they haven't seen before: including a resolution about five times higher than that of analog TV.
#break#
The main thing to remember when you are shopping for HD-TV set is that just because a television is ?digital? it does not mean it is necessarily ?HD-TV compatible?. There are two levels below the HD level (standard definition TV and enhanced definition TV), both of which are vastly better than analog televisions but still of considerably lower quality than an LCD TV- HD-TV set. Since the FCC has mandated that all television sets eventually switch from analog to digital, you should know the differences between the different types of digital TVs.
#break#
Here are some tips. When looking to purchase an HD-TV, remember to compare the difference in picture resolution, audio features, and pixels. HD-TV requires a minimum of 720 horizontal scanning lines (enhanced definition TV, while considerably higher than standard definition TV, only features a minimum of 480 scanning lines) and the resolution on an HD-TV is 1920 x 1080 compared to enhanced definition TV, which only has a resolution of 1280 x 780.
#break#
When you experience a HD-TV image and then compare it to other TVs' technology on the market, the difference will be clear. With ?HD? everything looks and sounds far more realistic than on any other type of system. We think that once you see a big screen LCD TV with HD-TV, the choice will be clear.
#break#
This is just the tip of the iceberg when looking for a HD LCD TV. In fact, many of the most important tips haven't been mentioned here. Learn about LCD TVs before making a purchase.
#break#
An LCD TV, which stands for Liquid Crystal Display Television, is a type of technology that greatly differs from CRT or plasma output. To give you a better idea, LCD technology is the same that is used in the screen of a laptop computer.
#break#
During their earliest years, the main problem with LCD TVs, much like that of the laptop computer screen, is that you had to be looking straight at the screen in order to view it perfectly. Being off to an angle or in another room would prevent you from being able to see the screen. If you have a laptop computer, you are likely already familiar with this fact. However, manufacturers have attempted to correct the issue with angled viewing of LCD TVs over the years. Today, LCD technology has become very popular in the world of television.
#break#
When shopping for LCD TVs, it is a good idea to view video images at various angles rather than just simply standing directly in front of the unit. Step off to an angle from each side of the television, walk a distance away and see if the screen remains visible. This will help to determine whether or not the television will be a nice addition to your home. While the LCD technology was long thought to be better suited for compact televisions, they later made their big screen debut. In 2005, Samsung unveiled an 82" LCD big screen television.
#break#
When selecting LCD TVs, take a moment to make sure that the cost is fair for the features that you are getting. When it comes to current technology, you will truly get what you pay for. It is also important to take special notice of the manufacturer?s warranty, which is commonly available with all new purchases. In order to receive complete coverage, the owner must retain their original sales receipt and follow the instructions listed on their warranty card.
#break#
Saving paperwork, including warranty documentation, will cause less of a headache in the future should the unit need to be serviced during the warranty period. When you are talking about spending several hundred of even thousands of dollars on a television, there is no better reason to take full advantage of the warranty.
#break#
If you are still curious about whether or not an LCD TV is right for you, compare the features with that of plasma and CRT models. Don?t forget to compare the features, the costs and also the manufacturer?s experience in creating quality electronics. When you are spending a significant amount of money, you will want to know that the manufacturer is one that is familiar with current technology and has a reputation to back it up.
#break#
Looking for that new TV set? You're no doubt looking for a LCD (or liquid crystal display) TV, but know all too well that they can be very expensive, especially the high definition LCD models. This is true, but there are in fact discount LCD TVs out there to be found. Post holiday sales when retailers pull out all the stops price wise in a mad scramble to get customers into their shops can be an excellent time to find LCD TV sets at a bargain price.
#break#
Floor models are another good way to obtain discount LCD TVs from retailers; there is generally a deep discount on merchandise sold minus it's original packaging. If you can do without that large box sitting around your living room, you're in luck, as well as a little richer than you'd be with a "brand new" model.
#break#
Another option for discount LCD TVs is of course to buy last season's model; make sure that the features you want are all present in the model you've been eying up at your local electronics shop. For instance, it is important to remember that not every large screen flat panel unit is necessarily high definition. The consumer should carefully check specifications of each model before buying. These models may in fact be high definition, enhanced definition, or neither of those things. The common assumption is that if it walks like a duck does not always hold true here.
#break#
So now that you have a few tips on where, when and how to look for a bargain on a LCD TV, what model should you be looking for? That all depends - the best LCD TV for you may not be exactly what someone else wants from their set. Think about your needs and wants before you go shopping for that LCD set.
#break#
Here are a few general rules of thumb to keep in mind when looking for that perfect TV set. If you play a lot of computer games or would like the option of using your television as a monitor for your computer, you'll want a model with an input for that; the best LCD TV models will have these and are excellent at displaying images and data from computer input sources. Other than that feature, the top concern for most is color accuracy and contrast. Inferior models tend to have lower accuracy and less contrast, while the better ones will have greater levels of both. The best way to evaluate this is to look closely at several different LCD TVs and compare the darkness of dark colors, especially blacks on each. The darker they are able to render black, the better the color accuracy and contrast.
#break#
Regardless of which model you're looking for, a LCD TV is almost certainly in your future. The cathode ray tube based television is rapidly becoming a thing of the past. Due to their high quality, sharp pictures and lightness (a great thing, anyone who has ever struggles with an old console TV set up several flights of stairs will tell you), they are certainly the wave of the future for home entertainment systems.
#break#
Discuss
Add this link to...
Tell a friend
Bury
Comments