What's the difference between plasma TV and LCD TV?
Author:Zhao Chenyu Time:2021-07-20 08:05 Browse(361)
Plasma television (PDP) and liquid crystal television (LCD) are flat panel TVs. They are like twins. Although they are very similar on the surface, they are very different in essence. 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 to produce ultraviolet light to stimulate phosphorescent material to emit light. LCD TV uses current to change the crystal structure of the thin film transistor on the LCD panel to make it display. In addition, plasma TV and LCD TV also have their own characteristics, such as plasma TV in/
Plasma display panel (PDP) and liquid crystal display panel (LCD) are flat panel TVs. They are like twins, although they are very similar on the surface, However, there are great differences in essence.

What's 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 also have their own characteristics. For example, plasma TV is cheaper than LCD TV in the same size, while LCD TV has advantages in power saving performance and display resolution, And claimed that the current plasma TV claims the highest physical resolution of 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, It's not enough to judge from the physical resolution of the screen.
therefore.
it's not scientific for LCD TV manufacturers to attack plasma TV from the physical resolution of the screen.
no matter how LCD TV defends, the perspective of plasma TV is better than that of LCD TV,Of course, plasma TV is not "without perspective."
for TV sets used in living rooms and bedrooms,
few people will watch TV at an angle of more than 120 degrees, so from this angle, there is no need for both sides to attack the perspective.
as for 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, However, when the still image appears at the same position of the plasma screen for a long time, the burn phenomenon may occur.
when the plasma TV turns on or off, the burn phenomenon may occur, The image that has been playing for a long time will appear indistinctly on the screen, as if it is printed on the screen, and this has become the target of some LCD TV manufacturers attacking plasma TV.
as for contrast, if we only look at the contrast figures marked by the enterprises in plasma TV and LCD TV.
this paper analyzes the contrast between plasma TV and LCD TVLCD TV is far inferior to plasma TV, but it can not be said that plasma TV is better than LCD TV.
this is because plasma TV and LCD TV adopt different contrast measurement methods.
even each enterprise adopts different measurement methods, The data they mark on their products will of course be very different.
most plasma TVs use the measurement method of all white and all black.
the contrast is generally very high. Some enterprises claim that the contrast is as high as 8000:1, which is the reason.
according to the American national standard ANSI, the contrast between plasma TVs and LCD TVs is about 200:1 or 300:1, This calculation method is to compare the black and white of the same image.
about the attack of analog and digital plasma TV manufacturers on LCD TV, the image is analog.
and plasma TV is all digital.
but in terms of image quality, the analog image feels smooth, However, digital images make people jump.
each has its own advantages and disadvantages, and the sales volume and sales volume are more than 40 inches.
plasma TV has obvious advantages. Although sharp has produced 45 inch LCD TV and started to go on the market, it is limited by the large-scale 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. However, there is no plasma TV of less than 40 inches in the Chinese market at present.
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from the appearance.
plasma TV is light and thin with wide screen The picture is clear.
"thin" is a major feature of plasma TV.
a 60-70 inch TV is only 67 cm thick; In addition.
theIt has a wide perspective (up to 180 degrees); Secondly, technically speaking, plasma TV adopts digital display mode, which is conducive to improving the clarity of imaging.
at present, plasma TV can convert analog signal into digital signal; Moreover, its driving voltage is superior to that of previous TVs.
it can be used to watch TV, VCD and DVD, as well as to watch digital TV and receive satellite TV on the Internet, making it the first choice for home theater.
in addition,
plasma TV has rich and easy-to-use interfaces, which can be connected to personal computers, mobile phones and other devices However, at present, the technology of plasma TV is not perfect.
there are still some defects in some aspects.
for example, the power consumption is large.
it is usually more than 300W, which is a big power consumer in household appliances; It has no competitive advantage in the resolution, contrast and resolution of panel image quality; The problem of heat dissipation is still difficult to solve.
but at the current technical level.
compared with plasma TV, LCD TV has certain advantages.
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with its ultra-thin, clear, environmental protection and energy saving features, LCD TV has become another main product in the high-end color TV market.
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LCD TV has no flicker and radiation.
it can reduce people's visual fatigue; It has rich interfaces and can connect computers, DVD and other audio and video devices, which can meet the needs of digital TV broadcasting in the future.
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LCD TV has more colors than plasma TV.
its power consumption is only one third of that of plasma TV; Generally, the life of LCD TV is about 60000 hours, twice that of plasma; The high brightness and high contrast of the new generation of LCD TV is also better than that of plasma.
an excellent LCD color TV must have excellent performance in brightness, contrast, resolution and viewing angle.
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the new generation of LCD TV is also better than that of plasmaLike plasma color TV, LCD TV has no flicker, thin thickness and light weight.
but it is not as good as plasma in large screen.
in the large screen high-end TV market.
plasma has inherent advantages in technology and price, so it once had the advantages of "plasma is bigger, plasma is bigger, LCD TV is lighter than plasma." 30 inch liquid crystal has always been considered as the boundary between liquid crystal and plasma TV.
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because liquid crystal (LCD) is a kind of organic compound between solid and liquid.
it has regular molecular arrangement.
under the action of different current and electric field.
the liquid crystal molecules will rotate 90 degrees regularly, resulting in the difference of light transmittance, In this way, the difference between light and dark can be generated under the power switch, and each pixel can be controlled according to this principle to form the required image.
LCD TV is made with this principle.
therefore, it is difficult to make LCD TV bigger in technology.
however, in recent years.
with the development of science and technology, LCD TV also began to develop towards large screen.
soon after the launch of the world's largest 46 inch LCD TV.
recently, the 50 inch LCD TV on display in the United States set a new record.
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in terms of price.
which one is better with the same specifications and models, the price of large screen LCD is generally higher than that of plasma, while the price of small screen is lower.
in the popular 30-34 inch TVs,
the price of LCD is falling faster than that of plasma.
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in the west,
LCD TV has penetrated into the kitchens, living rooms and bathrooms of many families, The advantages of LCD TV, such as ultra-thin, wall mounted, flat and power saving, are fully displayed.
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