Wednesday, December 15, 2010
【 Weak current College 】 LCD, plasma, conceptual differences and misconceptions 】
1. LCD Plasma TV related concepts
1. LCD TV: English LCD (LiquidCristalDisplay), liquid crystal display in the main substance is flat, when power shidaotong, molecular arrangement of orderly and easy to pass the light; molecular arrangement when not powered up, blocking the light through the chaos. Let the liquid crystal molecules such as gate like blocking or allowing light to pass through. Because the liquid crystal material itself does not glow, so there is the display as photosource on both sides of the tube and in the back of the LCD screen has a backlight (or even Lightguide plate) and reflective film, the backlight consists of fluorescent substance can be fired light, its main role is to provide a uniform background lighting. Backlight makes light in through the first layer polarization filter layer after entering the droplets containing thousands LCD liquid crystal layer. For LCD monitors, the brightness is often and he's back panel light source. Back panel lights brighter, the LCD Brightness will improve.
2, plasma TV: English for PDP (PlasmaDisplayPanel), is to use two pieces of glass between the gas to a colorful and vivid picture.
Second, the misunderstandings
1, plasma TV better than LCD TV "?
Error by:
1, screen size: 37 plasma TV in General, the closer to the above-inch big screen TV, while LCD TVs for general economic consideration is less than 32 inches.
2, contrast: plasma TV better than LCD TV, plasma TV contrast ratio-3000: 1, LCD TV-800: 1.
3, shows the effect: a comparison of plasma TV can render a variety of color, compare color reproduction.
4, trailing phenomenon: LCD TV will be rendered dynamically when a significant trailing phenomenon, and the plasma TV because the technology does not exist such defects, so outstanding.
5. Visual perspective: the display based on the LCD Panel, LCD TV unavoidable presence of the Visual angle is limited, but also because of the technology on plasma does not exist this flaw, so there is no question of Visual angle.
Error analysis of the reasons:
1, from size: LCD TV size too small already become history, but the market also continued bursts out cool stuff, put aside commercial hype is not to say, where large-screen LCD TV, many fine products. However the market reflect the current flat panel TV users for prices and living room area of consideration will still love between 32-43-inch flat-panel TV. And this dimension is a LCD TV with plasma TV product most part of the overlay, so that the current market, in size, while a larger plasma development space, but for the market, this symbolic space enough to become a competitive advantage.
2, contrast view: as the identity of the manufacturer, as well as major plasma manufacturers propaganda makes contrast seems to become the LCD TV is better than plasma TV's strong support. In fact, this view is clearly biased, since the plasma TV and LCD TV uses a different method for calculating the contrast, plasma TV, most of all white black calculation mode, contrast seem very high, and every business uses of measurement method may, if in accordance with the United States national standard ANSI to measurement, plasma TV and LCD TV contrast most 200: 1 or 3: 1 cent. Therefore, the contrast on the advantages of the plasma TV seems to be enough to be substituted LCD TV.
3. from the display effect: plasma color is slightly off, the screen is bright; the LCD the long transition in color, natural and soft. Colour LCD screen, the smaller the particles, lines, images appear smoother; while there are obvious plasma line are scenes looked crude,. In dynamic performance, the plasma has the innate advantages, for dynamic movie playback, plasma is quite smooth performance, and LCD are slightly "trailing" phenomenon.
4, trailing phenomenon: Although the LCD TV vendors also tried to avoid this issue, or by claiming that 8 millisecond response timehas overcome the trailing phenomenon, but the phenomenon in the current trailing LCD TV product is normal. However this does not mean plasma in this regard is perfect for quick movement of the white objects, plasma TV will have a mild tail phenomenon, just when the fast moving objects into the black, tail phenomena recur. This is a lot of plasma users switch machine will find screen flickering may find a play too, as printed on the screen.
5. Visual perspective: now the LCD TV has been able to balance this, normally following the perspective of 120 rendered picture without any loss. Moreover, a sufficient reason for home users it will also consider, in the living room would have an angle of 120 degrees, in China's "family" of basic national policy, it is hard to imagine plasma manufacturers propaganda in plasma products of this advantage of real significance, because it is a large-screen TV, is a considerable distance of view, not in the hands of the laptop.
2, plasma TV better than LCD TV "?
Error by:
1, screen size: 37 plasma TV in General, the closer to the above-inch big screen TV, while LCD TVs for general economic consideration is less than 32 inches.
2, contrast: plasma TV better than LCD TV, plasma TV contrast ratio-3000: 1, LCD TV-800: 1.
3, shows the effect: a comparison of plasma TV can render a variety of color, compare the color reproductionColor.
4, trailing phenomenon: LCD TV will be rendered dynamically when a significant trailing phenomenon, and the plasma TV because the technology does not exist such defects, so outstanding.
5. Visual perspective: the display based on the LCD Panel, LCD TV unavoidable presence of the Visual angle is limited, but also because of the technology on plasma does not exist this flaw, so there is no question of Visual angle.
Error analysis of the reasons:
1. from the point of definition: LCD TV manufacturer often claimed in clarity on than plasma TV, LCD TV, almost all the physical resolution can reach 1024 × 768 with high resolution and a maximum of up to 1920 × 1080, by contrast, plasma TV's most physical resolution 852 x 480 only partly meets the 1024 × 768. But it should be noted that decision flat panel TV sharpness is not only the physical resolution screen, circuit for high-definition signal processing or bad also directly affect the clarity and simplicity the physical resolution from the screen to determine objective enough. After watching the naked eye, in the same grade is adopted for both TV and high definition, LCD TV's strengths is the need for very careful observation can be resolved.
2. from the point of life: according to Panasonic, the life of the plasma TV can reach 6 million in General, is basically equivalent to the LCD TV set in bulb life. But sharp Associates represent the latest plasma product life and will also be able to reach 45000 hour. For whatever two egos of what the outcome, but you can recognize is that plasma TV's life slightly below the LCD TVs, and even with the 6 000 hours of life, but LCD TV light bulb replacement will still be able to continue to use, but is basically the plasma TV can retire. From life, it seems they can draw, but if counting on second life, it seems better than LCD TV and plasma TV.
3, from power point of view: in fact from consideration only on power directly is that economic reasons, for both price expensive TV, their power consumption considering the extent of the benevolent see benevolence, Moses. To be sure the same dimensions of the two TV, plasma TV power consumption is obvious, but in General, select the user and a plasma screen size is very sensitive to the so-called "fish and bear paw not given to", so the power consumption of real or according to their own situation considerations.
III. Summary
Online once outgoing Sony ready to fade out the plasma and rear head TV to go LCD TV news, LCD TV makers began advocating "plasma TV just transition product" argument, but soon came LCD Giants-Sharpe ready to fade out LCD TV and plasma TV's message input, although still not confirmed both the authenticity of the message, but this is already enough to the entire industry, but more are on the plasma TV and LCD TV is better.
Zhao Yun invincible, author of "long-Sheng Guan Yu, General" but also brave, known as "may". Good thing people always want to tap a male and female, after talking about the plasma and LCD TV is strong or weak a lot of people is the rift, the author also powerless to make a decision, just want to be able to correct on two television awareness of some misunderstanding.
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