First of all, plasma TV and LCD TV belong to high-definition TV and digital TV, which are the highest end of high-definition TV and digital TV. Your question now is whether to choose plasma TV or LCD TV. As for the choice of plasma TV or LCD TV, you can choose according to your own judgment. -
After entering 2006, the flat-panel TV market is in full swing. Flat-panel TV has become the main consumption point of home appliance stores during the 7-day long holiday during the Spring Festival, and its sales volume once exceeded last year's National Day Golden Week. Are you going to buy a high-definition LCD flat screen TV, too? Have you ever been confused and confused by the hype of the sales staff? Don't worry, let's take our time. After reading this question, I believe you can get your wish and buy your favorite products. ...
What is the use of the first generation LCD screen?
I believe that when we walk into the appliance store, we will be a little at a loss in the face of all kinds of brands, models and types of flat-panel TVs. Walking in front of the counter, enthusiastic promoters can't help but introduce some products to you, especially the introduction using Samsung's seven-generation screen has the highest frequency. So what exactly is the seventh generation screen? What's the difference with previous generations?
In short, in fact, with the maturity of technology, the cost of products has been reduced. Compared with previous generations, the Seventh Generation Line can cut more panels of the same size on the LCD panel. For example, compared with the sixth generation line, the seventh generation LCD panel can cut eight panels at a time, and the sixth generation can only cut four panels. Another example is the production of a 32-inch LCD TV with the seventh-generation panel, which can be cut into 12 pieces; If it is a sixth-generation LCD, you can only cut 8 pieces, and the difference between 8 pieces and 12 pieces is 1. Five times as much. Obviously, the seven generations have obvious advantages in terms of price and cost. This is also the main reason why the seventh generation screen is ahead of previous generations.
In addition, many people think that the seven-generation screen technology is much more advanced than before. Actually, it is not. Of course, if we must say so, we can think that the production of LCD panels has developed to the seventh generation, with more mature manufacturing technology and higher yield. The viewing angle can be as wide as 178 degrees, and the contrast can be as high as 1000: 1 or above, and the reaction speed is much faster. Not long ago, Samsung announced that it would cooperate with Sony to realize the production of the eighth-generation line in April-May this year, which is higher than the current seven-generation screen cutting rate.
So don't be overly superstitious about the seven-generation screen in the process of purchasing. Of course, it would be best if you are interested in seven-generation screen products.
Hd drives the market. Answer the problem of LCD TV consumption
PChome.net, China CNET Type: Original Author: Versace Editor: Time: February-13, 2006.
What is an HDMI interface?
What is HDMI?
Hdmi: The full name of HDMI in English is "high-definition multimedia" and in Chinese it means high-definition multimedia interface. HDMI interface can provide data transmission bandwidth up to 5Gbps, and can transmit uncompressed audio signals and high-resolution video signals. At the same time, there is no need for line/analog or analog/digital conversion before signal transmission, which can ensure the highest quality audio-visual signal transmission. HDMI and DVI pins are compatible, but the package is different. Compared with DVI, HDMI can transmit digital audio signals, increase support for HDCP, and provide better optional DDC functions. HDMI supports a data transmission rate of 5Gbps, and can transmit15m at the farthest, which is enough to handle a video of 1080p and an audio signal of 8 channels. And because a 1080p video and an 8-channel audio signal require less than 4GB/s, there is still a lot of room for HDMI. This makes it possible to connect DVD player, receiver and PRR with one cable respectively. In addition, HDMI supports EDID and DDC2B, so the device with HDMI has the characteristics of "plug and play", and the signal source and display device will automatically "negotiate" and automatically select the most suitable video/audio format.
The advantages of applying HDMI are: only one HDMI cable is needed to transmit audio and video signals at the same time, unlike the current need for multiple wires to connect; At the same time, due to wireless digital-to-analog or analog-to-digital conversion, higher audio and video transmission quality can be achieved. For consumers, HDMI technology can not only provide clear picture quality, but also greatly simplify the installation of home theater system, because audio/video use the same cable.
Hd drives the market. Answer the problem of LCD TV consumption
PChome.net, China CNET Type: Original Author: Versace Editor: Time: February-13, 2006.
Is plasma better or liquid crystal better?
Is plasma better or liquid crystal better? What should I buy?
This flat-panel TV with two different panel types, plasma and LCD, has been a controversial topic since it was put on the market. We can still see discussions on this topic on some well-known websites or forums. Which is better, liquid crystal or plasma?
Plasma TV (PDP) and liquid crystal TV (LCD) are both flat-panel TVs. They are like twins. Although they are similar on the surface, they are very different in essence. The biggest difference between the two is that different panels are used, which means that the imaging principle is quite different. Plasma TV relies on high voltage to activate the special gas in the imaging unit, so that it produces ultraviolet rays to excite phosphorescent substances to emit light. On the other hand, LCD TV changes the structure of the crystal in the thin film transistor on the LCD panel through current and makes it develop. In addition, plasma TV and LCD TV also have their own characteristics. For example, plasma TV has high contrast and is cheaper than LCD TV of the same size, while LCD TV has advantages in power saving performance and display resolution.
Hd drives the market. Answer the problem of LCD TV consumption
PChome.net, China CNET Type: Original Author: Versace Editor: Time: February-13, 2006.
On the clarity of mainstream TV
About clarity
Enterprises that produce LCD TVs often claim to be superior to plasma TVs in definition, and claim that the highest physical resolution claimed by large-screen plasma TVs at present is only 1024× 1024, while almost all large-screen LCD TVs can reach the high resolution of 1024×768, with the highest resolution of1920×/kloc. In fact, the physical resolution of most plasma TVs sold in the market is only 852×480, and only a few plasma TVs have reached 1024×768. Of course, the resolution of plasma with a larger screen, such as 65 inches, is as high as 1920* 1080, but the price is beyond the range of ordinary civilian prices.
However, it is not only the physical resolution of the screen that determines the definition of flat-panel TV, but also the circuit's quality of high-definition signal processing directly affects the definition. It is not enough to judge the clarity simply from the physical resolution of the screen. Therefore, it is unscientific for LCD TV manufacturers to attack plasma TV only from the physical resolution of the screen.
Hd drives the market. Answer the problem of LCD TV consumption
PChome.net, China CNET Type: Original Author: Versace Editor: Time: February-13, 2006.
Several points to be paid attention to when purchasing flat screen TV.
About visual angle
No matter how controversial LCD TV is, plasma TV is better than LCD TV from the visual point of view. Of course, plasma TV is not "no viewing angle problem". For TV sets used in the living room and bedroom, few people will watch TV at an angle of more than 120 degrees, so from this perspective, there is no need for both sides to attack the viewing angle.
On reaction speed
Response speed was once the weakness of LCD TV. Although there has been a great improvement in technology recently, it is sometimes targeted by enterprises that produce plasma TVs. Some enterprises claim that the response time of their LCD TVs has been reduced to 8 milliseconds, but in fact, the response time of most LCD TVs sold in the market is about 12 milliseconds. Even though the LCD TV has claimed that the response time has dropped to 8 milliseconds, there is still a tailing phenomenon when playing fast moving images, because the 8 milliseconds response time claimed by enterprises is measured when playing still images.
For a fast-moving black image or white image, LCD TV will have a slight tailing phenomenon, but this does not mean that plasma TV is perfect in this respect. For a fast-moving white object, plasma TV will also have a slight tailing phenomenon, but when the fast-moving object turns black, there will be no more tailing phenomenon.
About burns
Plasma TV is superior to LCD TV in processing moving images, but when still images appear in the same position on the plasma screen for a long time, burns may occur. When the plasma TV is burnt out and turned on/off, images that have been played for a long time will appear vaguely on the screen, just like being printed on the screen, which has also become the target of some LCD TV manufacturers to attack the plasma TV.
About contrast
If we simply look at the comparison figures marked by enterprises on plasma TV and LCD TV, LCD TV is far less than plasma TV, but it cannot be said that plasma TV is better than LCD TV. This is because the contrast measurement methods adopted by plasma TV and LCD TV are different, and even the measurement methods adopted by each enterprise are different. Of course, the data marked on their own products will be very different. Most plasma TVs are all white and all black, and the contrast is generally very high. Some enterprises claim that the contrast ratio is as high as 8000∶ 1, which is the reason. According to American national standard ANSI, the contrast between plasma TV and LCD TV is mostly around 200∶ 1 or 300∶ 1. This calculation method is to compare black and white displayed in the same image.
Therefore, in an absolute sense, both of them have their own advantages and disadvantages, but from the current market sales situation, LCD TVs occupy a more active position, and LCD sales account for a larger proportion of flat-panel TVs in China. We still advocate to experience from subjective feelings, and our own eyes are the strong evidence for making judgments.
Hd drives the market. Answer the problem of LCD TV consumption
PChome.net, China CNET Type: Original Author: Versace Editor: Time: February-13, 2006.
What is HDTV?
What is HDTV? Which TVs can achieve high definition?
Hdtv can be expressed as HDTV in English. HDTV is called high-definition TV in English, which means high-definition TV. The name HDTV itself has no digital meaning, but it is indeed a format of DTV (Digital Television).
Digital TV system (DTV) is a TV system that uses digital technology in the whole process of shooting, editing, production, transmission and reception (that is, all signals are represented by 0 and 1). Digital TV is divided into four grades according to definition: high definition (HDTV), enhanced definition (EDTV), standard definition (SDTV) and ordinary definition (PDTV). Backwards compatibility exists between digital TVs with different definition levels, and high-end products can be compatible with low-end products. It can be seen that HDTV is the best format for audio and image quality in DTV. Abroad, HDTV is defined as DTV with a resolution of at least 1920× 1080i or 1280×720p and a picture aspect ratio of 16:9.
HDTV is simply a TV with a physical resolution higher than 720P, which is 1280*720. At present, large-size LCD TVs have basically reached this specification. Some plasma TVs can also be realized. But in the concept of HD, we know that there is still 1080P, which is what we usually call full HD. This resolution is as high as 1920* 1080. At present, this kind of LCD TV has been listed in the mainstream consumer market, and most of them are made in China, and the price is not very high, so it is worth buying. This is also the development trend of flat-panel TV in the future. Only such products can be said to perfectly support the playback of all high-definition videos.
Hd drives the market. Answer the problem of LCD TV consumption
PChome.net, China CNET Type: Original Author: Versace Editor: Time: February-13, 2006.
What is Full HD? What is 1080P?
What is Full HD? What is 1080P?
What is Full HD? It is a flat-panel TV that can completely display 1920* 1080 pixels or the physical resolution reaches 1920* 1080. It should be noted that full HD and 1080P advertised by many manufacturers before are not the same concept.
Chi Mei introduced full HD 37-inch, 42-inch and 47-inch LCD screens for the first time, in which the pixel spacing between 37-inch pixels is only 0. 145 mm, which is less than 0.2 mm of the display. Chimei is also the first company in the world to launch a 37-inch full HD screen, but the seven-generation screen of the same size can't do this yet. Subsequently, the AUO Sixth Generation Line also began to supply 37-inch full HD panels. LG- Philips also began to offer full HD screens of 37, 42 and 47 inches. At present, the screens of Chimei, AUO and LG- Philips are widely used in full HD LCD TVs on the market.
1080P is, of course, one of the highest standards of HDTV in standard level or full HD in hardware level, but when we walk into the store, we will find that most brand businesses advertise under the banner of 1080P, which somewhat hinders our purchase. In fact, most flat-panel TVs on the market are not full HD. The so-called 1080P only supports receiving 1080P signals and displaying them on the screen through calculation. Most large-screen flat-panel TVs are 1366*768, and some plasma products are even lower. To realize the concept of full HD, the screen should at least reach the physical resolution of 1920* 1080.
Hd drives the market. Answer the problem of LCD TV consumption
PChome.net, China CNET Type: Original Author: Versace Editor: Time: February-13, 2006.
What are soft screen and hard screen?
What are soft screen and hard screen? What is the use of plexiglass material in LCD screen?
I only know that persimmons are soft, but now choosing computers to choose LCD TVs can also be divided into "soft" and "hard". It used to be a small number of computer promoters, but now it has expanded to many LCD TV dealers. This recommendation is "of course, it is good to buy hard ones", and that advises you not to be fooled by "buying soft ones can make the image clear"
The so-called "hard" and "soft" actually refer to the LCD screen of a computer or TV. According to the identification method provided by the promoter, it is to directly press the surface of various LCD screens with your fingers or lightly stroke with your nails. If there is a shadow like a water mark, it is a "soft screen", and if the shadow is light or almost absent, it can be called a "hard screen".
The reason of hard screen
The reason for promoting hard screens is simple. There is a layer of liquid crystal substance behind the LCD screen, which is very delicate and lacks protection. Any inadvertent impact or scraping may damage the screen surface, which is obviously better than softness.
In fact, the so-called hard screen is to add a layer of transparent plexiglass material to the LCD screen. Its advantage is that it can protect the screen from damage and dirt to the greatest extent under the condition that the workmanship meets the standard (without distorting the picture and affecting the color effect of the picture). After all, the LCD screen is dirty and it is more troublesome to clean up. It is much easier to clean up after adding panels, especially in families with children. Of course, the hard screen naturally has some shortcomings, which increases the cost.
Reasons for soft screen users
Merchants who think that soft screens are good are even more eloquent: the so-called hard screen is actually a protective outer film made of high-hardness transparent resin outside the LCD screen, which has high technical requirements. Once the outer film and screen are pasted carelessly, it will expand when turned on and contract when turned on, resulting in image distortion and affecting image quality. If the light transmission performance of the external screen protective film is not good, it may also affect the color effect of the picture.
Recently, the dispute between manufacturers and merchants about "soft" and "hard" promotion often makes consumers indecisive. However, in the face of consumer inquiries, many LCD TV manufacturers said that they never knew that LCD screens were soft and hard. Among many standards on LCD quality issued by international, domestic or industry, "soft" and "hard" have never been listed as the main standards to distinguish good from bad. "In order to attract customers, merchants are purely artificial hype!"
Liquid crystal expert reasoning
However, Chen Qiliang, director of the Liquid Crystal Branch of the Chinese Physical Society, has an opinion that whether it is "soft" or "hard", glass or resin is added in the production and processing of liquid crystal panels to protect the outer film, and the bonding technology with the LCD screen is no longer a problem, nor is the light transmittance. However, the "soft screen" without protective outer film is not necessarily inferior, because it has been proved that the LCD screen will generally not be damaged as long as it is used carefully without gravity impact and sharp objects. Experts in the communication, electric power and household appliances industries and the Municipal Consumer Protection Committee believe that whether it is "soft" or "hard", it should not and cannot be the only criterion to determine product quality and consumer choice. Similarly, the corresponding promotion should not be infinitely exaggerated.
Hd drives the market. Answer the problem of LCD TV consumption
PChome.net, China CNET Type: Original Author: Versace Editor: Time: February-13, 2006.
Resolution problem of plasma flat panel TV
Resolution problem of plasma flat panel TV
At present, the plasma on the market is also HD? But friends with a little common sense should know that the weakness of plasma is also the resolution problem, so how to talk about HD?
First of all, because the price of plasma TV above 50 inches is too high for ordinary people to bear, we mainly say that plasma TV below 42 inches is more suitable for public families. Due to the inherent defects, the resolution of plasma TV can not be very high. At present, most plasma TVs under 42 inches adopt ordinary plasma screens (resolution 852× 480,465,438+0 million pixels) and higher resolution screens (resolution1024× 768,790 million pixels), even on those expensive large-size plasma TVs, the maximum is not more than 65438+. At present, only Hitachi has introduced the ALIS plasma screen jointly developed by Hitachi and Fujitsu, which can reach the resolution of 1024× 1024, the pixels of the display screen reach1050000 pixels, and the peak brightness of the screen reaches 1 100cd/㎡, which is currently achievable in the industry.
This does not mean that the resolution of 1024x 1024 can only be seen on a square display, not the specification of 16: 9. The resolution of Hitachi 1024X 1024 plasma display screen is formed by changing the pixel spacing in the vertical direction, and the pixel spacing in the vertical direction is reduced to 65438. Because the luminous load of ALIS display screen is smaller than that of conventional screen, its service life is longer than that of conventional plasma screen, reaching 60,000 hours, breaking the previous concept that plasma TV can only be used for 20,000 hours.
Although plasma TV has some irresistible congenital defects, many domestic manufacturers have to adopt lower-cost plasma TV to occupy a larger market share considering the strategy of low-price impact on the market. Everyone with discerning eyes knows that most plasma screen manufacturers also produce their own plasma TVs. These foreign-owned brands of plasma TVs use better screens, while domestic enterprises can only get relatively inferior screens. This is also the main difference that the price of domestic brand plasma TV is several thousand yuan lower than that of foreign similar or joint venture brands.
Therefore, blindly pursuing low prices is not what rational consumers should pursue, but should consider the appropriate cost performance. After all, with the popularization of digital TV and high-definition TV in the next few years, screen resolution will become more and more important, and resolution is also the main parameter that directly affects the display effect, so this must be taken into account when choosing plasma TV. Will I need to watch HDTV in the future, or will I just be satisfied with watching ordinary analog TV programs or DVD movies? In the latter case, the relative importance of screen resolution may be weakened. Regardless of power consumption, the high brightness and high contrast of plasma TV can also make you upgrade from analog TV to plasma TV, and the visual upgrade is obvious. But if it's the former, I suggest you consider LCD TV with higher resolution. Because at the end of 2005, the country will soon promulgate the digital TV transmission standard. Judging from the development trend of digital broadcasting in the world, the digital broadcasting format of 1080i will become the mainstream. For example, the United States and Japan have adopted this format. Although the European standard has not yet been issued, it is expected that the digital broadcasting format of 1080i will also be adopted. At present, the transmission standard of digital TV in China has not yet been determined. If China is also broadcast in the digital format of 1080i, then only plasma with a vertical line not lower than 1000 can restore the digital HDTV, and most plasma TVs cannot.
Of course, not all plasmas can not perfectly support HD. For example, Panasonic 65-inch support 1080P. Next, there will be smaller-sized plasma to support physical high-definition resolution. Of course, they are also expensive. If the price drops to a more acceptable range over time, I believe plasma still has its place.
Hd drives the market. Answer the problem of LCD TV consumption
PChome.net, China CNET Type: Original Author: Versace Editor: Time: February-13, 2006.
How to choose TV according to room area?
How to choose TV according to room area?
The popularity of plasma and LCD TV marks that flat-panel TV has officially become the mainstream and entered the homes of ordinary people. The picture is bigger, takes up less space and looks more comfortable, but how big a flat-panel TV should be bought has become a topic of discussion before buying it at home. From a visual point of view, a bigger and clearer picture must be what most people want. However, due to the influence of room area and price factors, some things backfired. So how do we choose?
We take two rooms and two halls as reference, namely master bedroom, living room and dining room. If you choose a flat-panel LCD TV, we suggest that you can choose a 42-inch LCD TV in the living room, because the living room is relatively large now, but the price of 42-inch products is moderate, generally below 20,000 in China, and the low-end models of foreign brands are basically around 20,000. Of course, if you have sufficient funds, you can choose a 47-inch LCD TV, and the domestic price is also around 30,000. The bedroom should also be measured and analyzed according to the area. The master bedroom is generally larger than the assistant bedroom, which is about 15 square meters. We think it is more appropriate to buy a 37-inch one, and we can use the wall hanging scheme to further reduce the occupied space. Because the auxiliary bedroom is relatively small, it is necessary to choose a flat-panel LCD TV with a size below 32, which will be more coordinated with the overall living room. In the process of purchasing, we first recommend an LCD TV with HDMI digital audio-visual interface and resolution of 1366*768 or even higher, which is also based on the general trend. In addition, restaurants are popular in many families now, and LCD TVs are hung on the walls. We don't think it is necessary. Generally, you only need to stay in the restaurant for a long time when you eat, so it is not practical to buy an LCD TV. Of course, if necessary, we suggest buying a 20-inch or 22-inch product for watching news or adding atmosphere. No matter how big the product is, it seems to be a waste of resources.
After reading so much, are you ready to buy an LCD TV? Do you have a good product in mind? I hope it will be helpful to your purchase.