Twisted nematic
TN is called twisted nematic panel, and its low production cost makes TN the most widely used entry-level LCD panel, which is widely used in mainstream low-end LCD. At present, most of the TN panels we see are improved TN+ films, that is, compensation films, to make up for the lack of visible angle of TN panels. At present, the viewing angle of the improved TN panel has reached 160. Of course, this is the limit value measured by the manufacturer when the contrast ratio is 10: 1. In fact, the contrast has dropped to 100: 60.
As a 6Bit panel, TN panel can only display 64 colors of red/green/blue, and the maximum actual color is only 262. 144. Through the "dithering" technology, more than160,000 colors can be displayed, and only three primary colors of 0 to 252 gray levels can be displayed, so the final color display number information is 16.2 M colors. In addition, the contrast of TN panel is difficult to improve, and the problems directly exposed are thin color, poor reduction ability and unnatural transition.
The advantages of TN panel are less gray output, fast deflection speed of liquid crystal molecules and easy improvement of response time. At present, TN panels are basically used for LCD products below 8ms on the market. In addition, Samsung has also developed a B-TN(Best-TN) panel, which is actually an improved version of the TN panel, mainly to balance the contradiction that the TN panel must sacrifice image quality for high-speed response. At the same time, the contrast can reach 700∶ 1, which is close to MVA or early PVA panels. Many panel manufacturers in Taiwan Province Province produce TN panels, which are soft screens. A similar waterline will appear with a slight stroke by hand.
VA panel
VA panel is a kind of panel widely used in high-end LCD, which belongs to wide viewing angle panel. Compared with TN panel, 8-8bit panel can provide 16.7M color and large viewing angle, which is the high-end capital of this kind of panel, but the price is also more expensive than TN panel. VA panel can be divided into MVA panel led by Fujitsu and PVA panel developed by Samsung, and the latter is the inheritance and improvement of the former. The front contrast of VA panel is the highest, but the uniformity of the screen is not good enough, and color shift often occurs. Sharp words are its killer, and the contrast between black and white is quite high.
Plane switching
The advantages of IPS panel are high viewing angle, fast response, accurate color reproduction and low price. However, the disadvantage is that the light leakage problem is serious, and the purity of black is not enough, which is slightly worse than PVA. It is necessary to rely on the compensation of optical film to achieve better black. At present, IPS panels are mainly produced by LG- Philips. Compared with other types of panels, the screen of IPS panel is more "hard", and it is not easy to be deformed by water lines when swiping by hand, so it is also called hard screen. When you look at the screen carefully, if you see a fish-scale pixel to the left, plus a hard screen, then you can be sure that it is an IPS panel.
CPA panel (ASV panel)
CPA (continuous needle wheel arrangement) mode wide viewing angle technology (soft screen), CPA mode wide viewing angle technology is also a member of VA camp in a strict sense, and each liquid crystal molecule is arranged towards the central electrode like fireworks. Because the electric field on the pixel electrode is continuously changing, this wide viewing angle mode is called "continuous fireworks arrangement" >: >
Question: Which is better, LED or LCD TV? Strictly speaking, I won't say much. LCD is a traditional LCD TV, while LED is actually a light-emitting diode. I will talk about the advantages and disadvantages of the two, and the landlord will choose.
Light Emitting Diode(LED)
Advantages:
1 self-luminous, saving electricity in the dark and consuming electricity in the light. Dark places don't shine at all.
2 colors are brighter than LCD.
3 itself is a light source, so there is basically no problem that the TV is getting darker and darker after being used for a long time. The quality is also better.
It is not a pure liquid crystal, but a light-emitting diode, so there will be no faults such as screen lines.
Under strong light (such as sunlight), it can still display most of the pictures, which can't be seen clearly with ordinary LCD.
Disadvantages:
1 is actually a miniature version of a large billboard on the road, because each pixel is a light source. So you look at it for a long time, and your eyes are not very comfortable.
You know, the technology is advanced and the price is relatively high. ...
liquid-crystal display
superiority
1 traditional liquid crystal, skilled. I don't know which generation of products it is, and there are few design defects.
The former is brightly colored, while the LCD is softer. Because LCD is liquid crystal panel+backlight
3 price advantage
disadvantaged
1 It's too old. The LCD backlit by cathode fluorescent lamp will blink if it is used all the time. At present, LED backlight is basically used. This kind of problem is almost much less.
2 screen line, bad point, is a common problem of a few LCD products. If you fall down many times, you will have bad luck.
To sum it up. The landlord makes his own choice. Let me make a suggestion.
1. People who often watch TV (sitting on the sofa and bed, mainly watching TV) buy LCD (very comfortable after watching for a long time).
2. The landlord mainly plays TV or entertains guests, so he buys LED. I won't explain why.
Question 3: What kind of LCD TV screen is good? At present, the TV sets with the best quality and picture quality are Japanese version, American version and Western European version. Japan sells them to Europe and America and keeps them for its own use. In Japan, Toshiba has the best sales and reputation, followed by Sony. Toshiba Z8X, Sony X9200a and sharp UD 1 are the kings of 4K image quality, while Toshiba 55Z7 and Sony 65HX950 are the kings of 2K image quality. .
The Hong Kong version and other Asia-Pacific versions are not bad, but the mainland version is actually the worst. The grades of circuit chips and panels have shrunk in various ways, and they have shrunk secretly. However, China people have always admired foreign things and admired foreigners, and they have low taste and like to be fooled, so few people can notice. .
To buy TV, I recommend you to look at the professional evaluation in Japan. The so-called assessment agencies in Chinese mainland have low qualifications and little editing knowledge. Most of them accept money from manufacturers. The so-called evaluation is completely nonsense and flattery. There is basically no reference value. .
Last year's Samsung TV was smashed by a great god in the forum. Its TV set is divided into test version and market version. On one occasion, the market version of F8000 was accidentally sent to an evaluation agency, and the blue level overflowed and the green level was ultra-low. The overall picture quality is blue, the contrast is strange and the color is light. Later, Samsung gave some money through public relations, saying that it sent the wrong machine and sent a beta evaluation. The image quality of Samsung ES series and F series has been greatly reduced, and the domestic PVA panel index has been greatly reduced. Suzhou garbage W-LED is used as backlight. Seeing the F8000 TVs sponsored by Samsung in TVB Love Home, and the Samsung TVs of some current affairs programs of China Southern Television, the blue picture is outrageous and the picture quality is disgusting. .
Sharp is not a good thing either. Among Japanese manufacturers, shrinking it is the oldest qualification. The earliest use is Taiwan Province province panel, four-color UV technology, blown by Japanese original panel, but the actual picture quality is fart, dynamic blur, and black position is a mess. Sharp's high-end panels, even reluctant to use more, only a few XS 1A RX 1 have good image quality, X50 is also qualified, and the so-called middle and high-end panels such as LX930, LX950A, LX850 and LX730A are unqualified. . Sharp downsized itself, but it also brought several other good Japanese brands, followed by Sony, Toshiba and Panasonic. . Now Sharp LCD factory has been sold to Foxconn, and the advanced Kameyama panel was discontinued as early as 1 1 years ago.
Let me talk about LG again. Before 12, the LCD quality of LG was quite satisfactory. In 2008 and 2009, the oil paintings of LG's own IPS TV were particularly strong and I didn't like them very much. LG's so-called XD engine, however, has not seen much improvement in dynamic clarity and standard definition, as well as non-point-to-point picture level. The standard definition optimization technology level is average, and the overall cost performance is average. . 12 years later, the small universe broke out. Starting from LM series, the image quality has been improved obviously, and the price is reasonable, which is a conscience machine. . However, since 14, the workmanship and image quality of GB series began to shrink to a certain extent, belonging to low-priced goods, which was discovered by the forum gods.
Panasonic plasma, the so-called NEOPDP screen introduced by 10, is simply a low-cost shrinking product, with reduced power consumption and even reduced image quality. The plasma phosphor was replaced by a cheap product, and the image quality circuit was simplified. The screen began to flicker obviously, and the brightness seemed a little high, which means that the luminous efficiency was improved. In fact, the dark noise and high-light images are declining, the color tends to liquid crystal more and more, and the transparency is getting worse and worse. . These shrinking goods, such as VT50 VT60, are just like birds from the G20 era to the last one. . In addition, Panasonic experienced a lot of black line failures in the GT30 VT30 era, which was not the high quality level of Panasonic in 2007 and 2008. .
Question 4: What screen should I buy for LCD TV? Hard screen or soft screen has its own advantages. Soft screen has wider color gamut, richer colors and higher contrast. But the response speed is slow and the viewing angle is narrow. Pressing hard will produce water ripples.
Hard screen has fast response speed, smoother dynamic picture, wide viewing angle and stronger screen. However, the contrast is low, the black is not deep enough, the color gamut is narrow, and light leakage is common.
There is no difference in quality between the two screens. If you want good color effect and more gorgeous display effect, soft screen is the first choice.
If you want to draw a smoother large-angle display effect, then choose a hard screen.
Question 5: Which picture quality is better, TV or monitor? They are the same in principle except that the screen size is different.
There is only one way to compare the image quality of the two, that is, to see their resolution. The higher the resolution, the finer the image quality display.
If the supported resolutions are the same, they will have the same image quality.
It's just a big-screen TV with the same resolution, which looks a little rougher at close range than a small monitor. The advantage of a big screen is reflected in long-distance games.
Question 6: Which brand of TV display screen is better? Letv and Xiaomi are the first choice for domestic brands with poor image quality, which can't be called TV at all, followed by Konka and Skyworth, but in terms of quality, everyone is average (TCL, Hisense, Haier, Changhong, Panda, etc. ). To put it bluntly, at present, domestic brands just buy a screen, a shell and a driver board for assembly, all of which are cost and sales, with little technical investment and R&D funds.
Therefore, the picture quality of domestic TV is naturally very general, and the after-sales service is also very general. Once something goes wrong, they will try their best to escape. Personally, if you want to buy goods above 4000 yuan, there is no need to buy domestic brands.
At present, the Japanese version, the American version and the Western European version are the best in TV quality and picture quality. Japan sells them to Europe and America and keeps them for its own use. In Japan, Toshiba has the best sales and reputation, followed by Sony. Toshiba Z8X, Sony X9200a and sharp UD 1 are the kings of 4K image quality, and Toshiba 55Z is the king of 2K image quality.
7. Sony 65HX950…… ..................................................................................................................................................................... Circuit chips and panels have shrunk in various grades, and they have shrunk secretly. However, China people have always admired foreign things and admired foreigners, and they have low taste and like to be fooled, so few people can notice.
Question 7: What is the material of TV screen? The well-bought Hong Kong version and other Asia-Pacific versions are ok, but the mainland version is actually the worst. The grades of circuit chips and panels have shrunk in various ways, and they have shrunk secretly. However, China people have always admired foreign things and admired foreign things, and their tastes are low. They only look at appearance and function. Like to be fooled, so few people can detect it.
To buy TV, I recommend you to look at the professional evaluation in Japan. The so-called assessment agencies in Chinese mainland have low qualifications and little editing knowledge. Most of them accept money from manufacturers. The so-called evaluation is completely nonsense and flattery. There is basically no reference value. Therefore, the original Japanese goods are completely different from those sold in mainland China. .
The picture quality of Samsung TV has never been outstanding. Samsung's good thing is the panel. In 2008 and 2009, the original image quality of black crystal S-PVA panel was very good, with high contrast and deep black, which was adopted by Sony and Toshiba's high-end LCD, but the cost was high. After the separation of the panel factory that Sony cooperated with Samsung, Samsung stopped production of black crystal on 20 10, and then the so-called PVA panels were all cheaper and shrunk. . Last year's Samsung TV was smashed by a great god in the forum. Its TV set is divided into test version and market version. On one occasion, the market version of F8000 was accidentally sent to an evaluation agency, and the blue level overflowed and the green level was ultra-low. The overall picture quality is blue, the contrast is strange and the color is light. Later, Samsung gave some money through public relations, saying that the wrong machine was sent, and a beta version was sent for evaluation. It's cheap, right? 12 years later, the image quality of Samsung's ES series and F series dropped sharply, and the domestic PVA panel index shrank sharply, using Suzhou garbage W-LED as backlight. Seeing the F8000 TVs sponsored by Samsung in TVB Love Home, and the Samsung TVs of some current affairs programs of China Southern Television, the blue picture is outrageous and the picture quality is disgusting. .
But Samsung's after-sales service is very good. As long as you find serious light leakage, bad spots and scratches, you will be brittle and put on a new machine. .
Sharp is not a good thing either. Among Japanese manufacturers, shrinking it is the oldest qualification. First, use Taiwan Province panel, blow four-color UV technology, Japanese original panel. But if you really see the picture quality, you will feel that it is all fart, dynamic blur, and black bits are a mess. Some series still have color cast problems, and human skin is pig liver color. Sharp's high-end panels, even reluctant to use more, are mostly used as monitors, and the effect is very good. However, only a few models XS 1A RX 1 are decentralized for civilian use, and X50 is considered qualified. Later, the so-called high-end LX930, LX950A, LX850 and LX730A were all unqualified, but the price was still expensive. . Sharp downsized itself, but it also brought several other good Japanese brands, followed by Sony, Toshiba and Panasonic. . Now Sharp LCD factory has been sold to Foxconn. High-grade Kameyama panels were discontinued as early as 20 1 1. Now cheap shrink plates are produced in large quantities, and the cost is controlled. Sharp's after-sales service is quite satisfactory, and the customer service looks high.
Let me talk about LG again. Before 20 12, LG's LCD image quality was quite satisfactory. In 2008 and 2009, LG's own IPS TV has a strong sense of oil painting and doesn't like it very much. LG's so-called XD engine has not improved much in dynamic definition, standard definition and non-point-to-point image quality, and the standard definition optimization technology is average. Korean TV's color matching technology and image processing technology have always been very general, far less than Japan's. The overall cost performance is average. . 12 years later, the small universe broke out. Starting from LM series, the image quality has been improved obviously, and the price is reasonable, which is a conscience machine. . However, since 14, the image quality of the new GB series has actually started to shrink to a certain extent, getting worse, and the price is a little more expensive than the LA series, which is a bit pitted, which was discovered by the forum gods. On the after-sales side, LG's Guangzhou-made IPS LCD has many quality control problems, such as monitors and televisions. Its panel has the most light leakage, bad spots and yin and yang surfaces, but it was found that something was wrong when it was delivered home. You can propose a new machine, which will be related to after-sales for a period of time at most. .
Panasonic plasma, that is, the so-called NEOPDP screen launched on 20 10, is simply a low-cost shrinking product, with reduced power consumption, but even the picture quality is also reduced. The original plasma phosphor was replaced by cheap goods, and the image quality processing circuit was simplified. The screen began to flicker obviously, and the brightness seemed a little high, saying that it was to improve the luminous efficiency. In fact, the noise of dark and high-light pictures has decreased, and sharp-eyed people have found that the color of Panasonic's later models tends to be liquid crystal more and more, and the transparency becomes worse. . From the G20 era to the end ... >>
Question 8: Which brand of domestic TV uses a better LCD screen than LeTV and Xiaomi? These are the first choices of domestic brands with poor image quality, and they can't be called TV at all, followed by Konka and Skyworth, but in terms of quality, everyone is average (TCL, Hisense, Haier, Changhong, Panda, etc. ). To put it bluntly, at present, domestic brands just buy a screen, a shell and a driver board for assembly, all of which are cost and sales, with little technical investment and R&D funds. Therefore, the picture quality of domestic TV is naturally very general, and the after-sales service is also very general. Once something goes wrong, you will do everything you can to avoid them. Personally, if you want to buy more than 4000 yuan of goods, there is no need to buy domestic brands.
At present, the Japanese version, American version and Western European version are the best in TV quality and picture quality, which are sold to Europe and America and kept by Japan. In Japan, Toshiba has the best reputation for sales and use, followed by Sony. Toshiba Z8X, Sony X9200a and sharp UD 1 are the kings of 4K image quality, while Toshiba 55Z7 and Sony 65HX950 are the kings of 2K image quality. . The Hong Kong version and other Asia-Pacific versions are OK, but the mainland version is actually the worst. All levels of circuit chips and panels have shrunk, even secretly. However, China people have always admired foreign things and admired foreigners, and they have low taste and like to be fooled, so few people can notice. .
To buy TV, I recommend you to look at the professional evaluation in Japan. The so-called assessment agencies in Chinese mainland have low qualifications and little editing knowledge. Most of them accept money from manufacturers. The so-called evaluation is completely nonsense and flattery. There is basically no reference value. .
The picture quality of Samsung TV has never been outstanding. Samsung's good thing is the panel. In 2008 and 2009, the original image quality of black crystal S-PVA panel was very good, with high contrast and deep black, which was adopted by Sony and Toshiba's high-end LCD, but the cost was high. After the separation of the panel factory that Sony cooperated with Samsung, Samsung stopped production of black crystal on 20 10, and then the so-called PVA panels were all cheaper and shrunk. . Last year's Samsung TV was smashed by a great god in the forum. Its TV set is divided into test version and market version. On one occasion, the market version of F8000 was accidentally sent to an evaluation agency, and the blue level overflowed and the green level was ultra-low. The overall picture quality is blue, the contrast is strange and the color is light. Later, Samsung gave some money through public relations, saying that the wrong machine was sent, and a beta version was sent for evaluation. It's cheap, right? 12 years later, the image quality of Samsung's ES series and F series dropped sharply, and the domestic PVA panel index shrank sharply, using Suzhou garbage W-LED as backlight. Seeing the F8000 TVs sponsored by Samsung in TVB Love Home, and the Samsung TVs of some current affairs programs of China Southern Television, the blue picture is outrageous and the picture quality is disgusting. .
But Samsung's after-sales service is very good. As long as you find serious light leakage, bad spots and scratches, you will be brittle and put on a new machine. .
Sharp is not a good thing either. Among Japanese manufacturers, shrinking it is the oldest qualification. First, use Taiwan Province panel, blow four-color UV technology, Japanese original panel. But if you really see the picture quality, you will feel that it is all fart, dynamic blur, and black bits are a mess. Some series still have color cast problems, and human skin is pig liver color. Sharp's high-end panels, even reluctant to use more, are mostly used as monitors, and the effect is very good. However, only a few models XS 1A RX 1 are decentralized for civilian use, and X50 is considered qualified. Later, the so-called high-end LX930, LX950A, LX850 and LX730A were all unqualified, but the price was still expensive. . Sharp downsized itself, but it also brought several other good Japanese brands, followed by Sony, Toshiba and Panasonic. . Now Sharp LCD factory has been sold to Foxconn, and the advanced Kameyama panel was discontinued as early as 1 1 years ago. Sharp's after-sales service is quite satisfactory and high-profile.
Let me talk about LG again. Before 12, LG's LCD image quality was quite satisfactory. In 2008 and 2009, LG's own IPS TV has a strong sense of oil painting and doesn't like it very much. LG's so-called XD engine has not been greatly improved in terms of dynamic clarity, standard definition and non-point-to-point picture level, and the standard definition optimization technology level is average. The color matching technology and picture processing technology of Korean TV have always been so-so, far less than that of Japan. The overall cost performance is average. . 12 years later, the small universe broke out. Starting from LM series, the image quality has been improved obviously, and the price is reasonable, which is a conscience machine. . However, since 14, the image quality of the new GB series has actually started to shrink to a certain extent, getting worse, and the price is a little more expensive than the LA series, which is a bit pitted, which was discovered by the forum gods. After-sales, LG's light ... >>
Question 9: What screen on TV is good for you? Maiyouge customer service is at your service at any time! At present, there are two mainstream LCD screens on the market, one is IPS hard screen and the other is VA soft screen.
Advantages of IPS hard screen:
1, fast response
2. The viewing angle is large, and the viewing angle of IPS hard screen panel can reach 178 degrees.
3, the color is true. This is also a comprehensive display of IPS hard screen color fidelity features.
4, the dynamic picture is excellent, IPS can display the dynamic high-definition picture very well, and there is no watermark, shadow and flash when touching, which is very stable.
5, the color is accurate.
6, touch no water lines, IPS screen is suitable as a touch screen.
VA panel can be divided into MVA panel led by Fujitsu and PVA panel developed by Samsung. The front contrast of VA panel is the highest, but the uniformity of the screen is not good enough, and color shift often occurs. Sharp words are its killer, and the contrast between black and white is quite high.
The PVA mode wide viewing angle technology promoted by Samsung is widely used in high-end LCD calcium carbide or LCD TV. The VA panel is a soft screen, and a similar waterline will appear with a slight stroke by hand.
IPS hard screen technology is the most advanced LCD technology in the world. Compared with traditional soft screen LCD, IPS hard screen LCD has faster response speed and smoother moving picture. The image has no residual image, wide environmental protection and energy saving perspective, relatively accurate color, and the size cutting is better than the previous products.
Question 10: What kinds of LCD panels are there and which one is the best? What kind of LCD panel is good?
Personally, I think IPS panel is the best (and more expensive).
Liquid crystal panels are mainly divided into two categories: TN and wide-angle panels. TN panel production technology is mature, with high yield and low price. The disadvantage is that the viewing angle is small, and the color can only reach 16.2M, which is not conducive to color reproduction. Wide-angle panels are divided into IPS panels, MVA panels and PVA panels, all of which are expensive, but the color can reach 16.7M, and the viewing angle exceeds 170 degrees. At present, only about 5% of the displays on the market use wide-angle panels, and most of the rest are low-priced TN liquid crystal displays.
1, TN panel
TN panel is based on mature standard TFT-TN liquid crystal technology, which is widely used in entry-level and low-end liquid crystal displays. Because of its few gray levels, liquid crystal molecules have fast deflection speed, and its response time is easy to improve. At present, liquid crystal products below 8ms on the market all adopt TN panel. Generally speaking, its biggest advantage is low price and fast response time, but the viewing angle is only 140 degrees, which is not as good as other high-end panels in color reproduction, because 16.7M TN panel and 16.2M panel have no substantial changes in color.
2.IPS panel
The biggest point of IPS panel is its super-realistic color reproduction ability, but it has long response time and high production cost, so it is mostly used in high-end professional drawing LCD, which is the kind of panel used by the famous Apple LCD. In addition, the viewing angle of IPS panel is very large, which can basically reach the level of CRT display, and the color display ability reaches 16.7M, but it is not satisfactory in contrast, response time, black background and color saturation.
3.MVA team
MVA panel can be said to be the earliest wide-angle technology. Its liquid crystal layer contains protrusions for liquid crystal molecules to attach to. When there is no voltage, the MVA panel looks no different from the traditional technology. The liquid crystal molecules are perpendicular to the screen, but once a voltage is applied, the liquid crystal molecules will adhere to the protrusions and shift to form a state perpendicular to the surface of the protrusions. This technology effectively improves the response time and viewing angle of LCD, and the viewing angle can reach16.7m. Now this technology is relatively mature, so the market penetration rate is relatively high. Maya Dabai, Philip's 190P7, and Youpai's VX2025wm all use MVA panels.
4. Polyvinyl alcohol panel
PVA board is a derivative of MVA board. It uses transparent ITO layer to replace the protrusions in MVA liquid crystal molecules, which greatly improves the light transmittance, thus improving the image quality and display efficiency. The viewing angle can also reach 170 degrees, and the response time, contrast and color reproduction ability have been greatly improved. It can be said that PVA LCD panel has almost no weakness except price. Due to the high production cost, PVA panels are mostly used in LCD TVs and high-end brushed LCD, such as Samsung F7 series LCD TVs, Dell 2007WFP, Samsung LA32R7 1B, etc., which are far from ordinary consumers.
(Wide-angle technology: Among the parameters of LCD, there is a horizontal/vertical viewing angle. The horizontal viewing angle of traditional LCD is 45 degrees each, which means that the viewer has a viewing angle of 90 degrees. When the angle between the user and the monitor is large, you will not be able to see the contents on the monitor clearly. This is also the reason why many users report that the picture color is distorted or gloomy when running games or watching movies on LCD. But the wide-angle technology is different. The viewing angle of LCD can be increased to more than 160 degrees, thus solving the problem of insufficient viewing angle. )
What is the difference between LPL panel and TN panel of LCD?
There is a close relationship between LCD and LCD. Many factors such as the output, advantages and disadvantages of LCD are related to the quality, price and market trend of LCD itself. Among them, the LCD panel is related to the response time, color, viewing angle, contrast and other parameters that players value most. From the LCD panel, we can see the performance and quality of this LCD.
VA type: VA type LCD panel is widely used in current display products, and used in high-end products. 16.7 ... >; & gt