Advantages and disadvantages of plasma TV and LED TV

According to the current market share of flat-panel color TVs, plasma color TVs only account for 1%, LCD TVs are the mainstream, in general, the picture is LCD TV is more stable, and the picture quality is more clear, plasma TV dot particles are relatively thick, close look Obviously, but it is less obvious from a distance, and plasma TVs are relatively dark. LCD TVs sell more expensive than plasma, but it is not that plasma TVs are not good. You can buy them according to your actual needs.

Now the mainstream size in the living room is 32 inches - 42 inches, the standard size of 26, 27 inches in the bedroom is enough, the domestic brands Li Haixin, Xoceco are doing well, Hisense advocates full functionality, Xoceco is more fashionable, Reference purchase.

LCD and plasma together support the sky of flat-panel TVs. There is no conclusion, and consumers' choices are also based on specific circumstances. However, many consumers don't know much about the two. Below we introduce some related indicators of LCD and plasma TV, hoping to increase consumers' knowledge in this area.

Color expression

The color realization of plasma is the same as that of CRT TV. It is realized by the excitation light of red, green and blue phosphors, so the color expression can reach the level of NTSC CRT color TV (NTSC). The color of the liquid crystal is realized by the white backlight through the red, green and blue color filters. At present, the best color performance range that can be achieved by the CCFL backlight is 75% NTSC, so the color vividness of the liquid crystal is poor.

Power consumption problem

Excessive power consumption has always been a place where plasmas have been criticized. The industry has made unremitting efforts to improve the efficiency of plasma by years of improvements in discharge cell structure, gas formulation ratio, electrode shape and drive circuit. From the early 1.2lm/W to 1.8lm/W in the previous two years, and now to 2.5lm/W, the 42-inch plasma power consumption has dropped from 400-watt to more than 200-watt.

The luminous efficiency of the fluorescent tube of the LCD TV is as high as 30~100lm/W, and the luminous efficiency of the CCFL backlight of the large-screen LCD TV can be 50~60lm/W, which is more than 20 times of the plasma, but after being assembled into the display, the total The backlight utilization is only about 5%, far less than the power saved.

Life problem

The lifetime indicators of liquid crystal and plasma are usually seen as the time when the brightness is reduced to half, not the average trouble-free working time. Due to the use of phosphors on CRTs, early plasmas have insufficient UV-resistance to plasma discharges and are aging faster, resulting in insufficient lifetime. However, a new generation of long-life, high-brightness plasma-specific phosphors has been commercialized, which has more than doubled its life.

The cycle of TV update is generally long. Many consumers use it for 10 consecutive years. At present, the life of backlights for TV sets has reached 50,000 to 60,000 hours, which can fully meet the long-term requirements of consumers.

In liquid crystal (LCD) and plasma (PDP) 孰 孰 的 的 口 口 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 舆 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶The group's executives said that a series of experimental data show that plasma is superior to LCD TV in terms of brightness, contrast, reaction speed, viewing angle, reducing visual fatigue, energy saving and cost performance.

According to the "2005 Tablet TV White Paper" released by the Information Resource Development Department of the National Information Center, the overall sales volume of flat-panel TVs will be around 4.2 million units next year (2006), including 3 million LCD TVs, accounting for 73.3%. LCD has clearly occupied the market with an overwhelming advantage. However, Jin Yingzan, president of overseas marketing of LG Electronics Display Products Division, said that as more companies can only master the production technology of liquid crystals, public opinion is guided to the side that favors LCD.

In fact, plasma has better performance in many ways. For example, it can reflect the natural color more realistically. Because the principle of plasma TV is to inject inert gas between two glass screens to emit light, it belongs to self-illumination, and liquid crystal is the projection image of back light, and it can not emit light by itself, so plasma has better natural color reproduction degree. The results of the 2004 study show that PDP can show 93% color, while LCD is only 70%.

In terms of reaction speed, the PDP is 0.001 milliseconds, and the LCD is 8 milliseconds. Because Westerners love to watch sports events, and PDP can show fast moving pictures, this is why the North American market is dominated by PDP. At the same time, the wide viewing angle of the PDP is also its unique advantage. For the accusation that the PDP is not bright enough, Jin Yingzan said that the lighting of the store is often ten times that of the family, so the LCD seems to be brighter in the store. However, when the home is used, the lighting is often dark, and the advantages of the PDP can be revealed. Last but not least, the PDP's price/performance ratio is more attractive. The same 42-inch LCD is about 5,000 yuan more expensive than plasma. LG expects that the price of PDP in the market will continue to drop by 15% to 20% in 2006 as production increases.

However, the biggest weakness of the PDP is its size. If consumers want to buy flat-panel TVs under 40 inches, they can only choose LCD. From the development trend of LCD TVs, the main use of LCD TVs of 32 inches and below will be converted into bedrooms and even toilets, while 37-inch, 40-inch, 42-inch and 46-inch LCD TVs are the mainstream specifications of the living room. In 2006, 37-inch and 42-inch LCD TVs will gradually rise to a single-size mainstream, and 42-inch will become a hot spot for LCD TVs and plasma TVs.

Under the current market conditions, experts suggest that consumers can consider LCDs for small-sized flat-panel TVs, while larger-size flat-panel TVs have the advantage of plasma.