What is the difference between plasma TV and LCD TV
Author:one Time:2021-07-21 14:38 Browse(23)
Plasma TV depends on gas imaging, LCD TV depends on liquid imaging, plasma TV is suitable for large-scale remote viewing, LCD TV is suitable for small-scale close viewing
Plasma TV and liquid crystal TV are both flat panel TVs.
they are like twins, although they are very similar in appearance, However, there are great differences in essence.

What is the difference between plasma TV and LCD TV

the biggest difference between the two is that they use different panels.
that is to say, their imaging principles are very different.
plasma TV relies on high voltage to activate the special gas in the imaging unit.
it produces ultraviolet light to stimulate phosphorescent materials to emit light.
while LCD TV changes the thin-film crystal on the LCD panel by current In addition, plasma TV and LCD TV have their own characteristics. For example, plasma TV is cheaper than LCD TV in the same size, However, LCD TV has advantages in power-saving performance and display resolution.
about clarity.
enterprises producing LCD TV often claim to be superior to plasma TV in clarity.
and claim that the highest physical resolution of plasma TV is less than 1024 × 1024, and almost all LCD TVs can reach 1024 × 768, the highest has reached 1920 × 1080.
in fact.
most plasma TVs on the market have a physical resolution of 852 × 480, only a few plasma TVs have a physical resolution of 1024 × 768.
but the definition of flat panel TV is not only determined by the physical resolution of the screen.
the circuit also directly affects the definition of high-definition signal processing, and it is not enough to judge from the physical resolution of the screen.
this paper analyzes the definition of flat panel TV from the following aspectsSo.
it is not scientific for LCD TV manufacturers to attack plasma TV only from the physical resolution of the screen.
about the perspective.
no matter how LCD TV defends.
plasma TV is better than LCD TV in the perspective, of course, plasma TV is not "no perspective problem." The TV used in bedrooms.
few people watch TV at an angle of more than 120 degrees, so from this point of view, there is no need for both sides to attack the angle of view.
about response speed.
response speed used to be the weakness of LCD TV.
although there have been great improvements in technology recently, However, they are sometimes attacked by the enterprises that produce plasma TVs.
some enterprises claim that their LCD TV response time has been reduced to 8 milliseconds, but in fact, Most of the LCD TVs on the market have a response time of about 12 Ms.
even the LCD TVs that have claimed that the response time has dropped to 8 ms.
there is still a tailing phenomenon when playing fast moving images, Because the 8 ms response time claimed by the enterprise is measured when still images are played.
for a fast-moving black image or white image,
LCD TV has slight tailing, but this does not mean that plasma TV is perfect in this respect. For fast-moving white objects, plasma TV also has slight tailing, But when the fast moving object is changed to black, there will be no more tailing.
about burns.
plasma TV is better than LCD TV in processing moving images.
but when the still image appears at the same position on the plasma screen for a long time, plasma TV is better than LCD TV in processing moving images,When the plasma TV is turned on or off, the image that has been played for a long time will appear on the screen, as if it is printed on the screen, This has become the target for some LCD TV manufacturers to attack plasma TV.
about contrast.
if we only look at the contrast figures marked on plasma TV and LCD TV by enterprises.
LCD TV is far inferior to plasma TV, But it can't be said that plasma TV is better than LCD TV.
this is because plasma TV and LCD TV adopt different contrast measurement methods.
even the measurement methods adopted by each enterprise are different. Of course, the data marked on their products will be very different.
plasma TV mostly adopts all white and all black measurement methods.
the contrast is generally very high, Some companies claim that the contrast ratio is as high as 8000:1, which is the reason.
if measured according to the American national standard ANSI,
the contrast ratio of plasma TV and LCD TV is mostly around 200:1 or 300:1, This calculation method is to compare the black and white of the same image.
about analog and digital.
the image of plasma TV manufacturers attacking LCD TV is analog.
and plasma TV is all digital.
but from the perspective of picture quality.
the analog image makes people feel smooth, However, digital images make people feel jumping.
each has its own advantages and disadvantages.
sales volume and sales volume.
with the continuous change of brightness and darkness of the screen.
plasma pixels work in the gap.
plasma pixels work in the gapLiquid crystal molecules can't withstand high temperature.
moreover, the damage rate of lamp tubes is high. Despite the circuit damage, the plasma life is relatively long. I have seen the plasma used in 1997 for production process monitoring, working 20 hours a day, and still displaying normally.
the liquid crystal is broken long ago.
in the market of more than 40 inches.
plasma TV has obvious advantages, Although sharp has produced 45 inch LCD TV and started to go on the market, due to the lack of large-scale mass production of advanced LCD panel, LCD TV can not be compared with plasma TV in large size.
in the market of less than 30 inches.
LCD TV also occupies an absolute advantage compared with plasma TV, At present, there is no plasma TV less than 40 inches in the Chinese market.
from the perspective of technical principle.
LCD TV is passive lighting, with a backlight at the back. After the LCD panel is turned on, there are cold cathode fluorescent tubes at the back, which are always on. By changing the voltage value to stimulate the LCD, the light intensity and color can be controlled, And then the color combination with different shades can be changed on the LCD panel, and the power will not change because of the display effect.
while the plasma TV is active lighting.
every small pixel is lighting, and its power is related to the lighting times and brightness. In the case of all white, each plasma display unit reaches the peak value, At this time, the power consumption of plasma TV is higher than that of LCD TV.
but the image of TV is white and black.
when the black picture does not emit light, the power consumption is only 30-40% of that of all white.
considering the balance.
in actual operation, focusing on a certain period of time is basically not much different; When the power consumption peak, the power consumption of plasma TV is higher.
but from a dynamic point of view.
the power consumption of plasma TV is higherThe power consumption of plasma TV is not necessarily higher than that of LCD TV.
in physics,
plasma is internally luminous and spot luminous, while LCD is surface luminous, so LCD is better and better for eyes.
in terms of use,
when looking at moving objects, plasmons are not "shadowing", and the phenomenon of "shadowing" of LCD is more serious, We often watch the small news words rolling right below the TV, and "drag shadow" is worse. These two kinds of TV will make you feel dizzy.
traditional picture tube TV.
basically does not drag shadow, and the color is better than these two.
so I suggest (1) if you buy a new TV or the original TV is broken, you must replace it.
pursue fashion, Then buy an LCD TV. (2) if you want to replace the TV, I think it's better to be cautious. There's no need to spend the money, and the effect is not good. (3) if it's for children, you should control the time that children watch TV. At the same time, in order to protect children's perception of color and reduce the impact of "shadowing" on vision, you should not replace it for the time being. (4) the technology update is very fast However, the program has not been changed. There are too few high-definition programs and there is not much practical value, so it is not worth using.
the program is not worth using
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