LED (ie, light-emitting diode) light sources have been used in lighting, home appliances, automotive and solar industries for many years. It is predicted that the overall scale of the LED industry chain will reach 80 billion yuan in 2010.
However, does it really have the strength to compete with existing products?
Energy-saving LED
"LED" technology is essentially a semiconductor lighting technology. As a luminescent material, a semiconductor chip directly converts electrical energy into light energy.
In the field of color TV applications, since last year, Hisense, TCL, Skyworth, Samsung, and Sharp have produced a variety of LED TVs. The display of this type of TV is still liquid crystal, and the quality change is that the backlight is changed from "CCFL cold cathode fluorescent tube" to "LED".
The reporter saw in front of a foreign-funded color TV brand showcase of Suning Appliance that the LCD TV with LED backlight is indeed convincing from color, brightness and definition: 6 sets of color TVs simultaneously play the theme of green leaf, LED TV The "leaves" on the top are more fresh and green.
Some LED TVs also guarantee that some products are half the thickness of ordinary LCDs. There are test reports that the thickness of Konka, Hisense and Skyworth can even be as thin as 1.9 cm to 2.2 cm.
Another feature of LEDs is energy savings. According to a leaflet from a CBN reporter, the power consumption of a 46-inch and 40-inch LED for a foreign-owned color TV is 169 watts and 139 watts; but the power consumption of other LCD TVs is as high as 269 watts and 193 watts, which is higher than the former. 50% and 40% energy consumption.
Sanan Optoelectronics Board Secretary Yi Shengze told CBN reporter that LED lamps are extremely energy efficient. In general, the power consumption of LED lamps is 1/10 of that of incandescent lamps and 1/2 or more of fluorescent lamps.
In Shanghai Chengda Lighting City, a dealer of LED lamps took out a light cup containing 12 small particles from the counter. "It uses about 2 watts of electricity. The best-selling energy-saving lamps of the same kind should be as high as 5 to 8. Around the tile." Another owner of the operating lights, Yu surnamed boss said that 1 meter of red and blue LED lights consume 3 watts of electricity, and ordinary lights have a power consumption of up to 20 watts. "And, the use of ordinary light strips is very short, there is no electricity in two or three months. LED strips can have a life of one year." Yu boss said.
Yi Shengze also told reporters that the actual maximum life of LED lights can reach 60,000 to 70,000 hours, about 10 times that of fluorescent lamps. "LED lamps have low voltage, high safety, light weight, short response time and rich colors. It is adjustable and contains no harmful elements. Therefore, many traffic signals such as electronic information and automobiles use LEDs."
The price is too high
However, the price of LED series products is really high.
Take LCD LED TV, Suning Appliance, a 55-inch TCL brand LED TV sold for 24,000 yuan, and the size of ordinary LCD dropped to 12,000 yuan. The 40-inch Sharp LED and non-LED color TVs are priced at $11,400 and $7,199.
The price of LED lamps is also "high and low." The wholesale price of LED lights in the city of lighting should be 6 yuan / meter, some shops can also open the price of 8 ~ 10 yuan / meter; the same length of ordinary lights with only 2.5 yuan per meter. The price of 12 LED lamp cups is 15 yuan/piece, and other halogen type lamp cups are only about 5 yuan.
At present, although there are 3,000 companies in the domestic LED industry, most of them compete in the middle and lower reaches, and R&D investment is small. Although there are dozens of participating units for LED chips (ie, upstream industries) with high technical and capital requirements, the synergy effect between them is poor, and the technical output is unwilling. As a result, every company in the upstream link cannot scale and the cost is difficult. Lower, the price of LED applications is naturally high.
Moreover, most of China's color TV manufacturers only cut into the LED backlight manufacturing line last year. There must be a process for mold development, color and other functions debugging. If the cost of TV and lighting products drops drastically, I am afraid I have to wait. Last few years.
White LED bottleneck
In addition, the sales staff of the Lighting City does not recommend consumers to buy LED lamps. What is going on here?
The original dealer thinks: "Don't look at the LED light color, blue, yellow and green, but not practical. Compared with white energy-saving lamps, most of the LED lamps are absolutely not enough. You can only use it for decoration at home. , can't read and write."
The CBN reporter found that only the LED lights in the city where only a few chandeliers can change colors and contain white light, but a chandelier with a length of 80 cm is thousands of dollars; the operator of the lamp and the lamp cup It is rare to sell white LEDs.
An analyst who asked not to be named said that there are still few companies that make white LED chips on the one hand. There are only individual companies such as Sanan Optoelectronics in China, and there are also white LEDs in Japan, but the prices of imported products are very high. It is also because the marketing is not strong enough. It does not have the same financial subsidies as the energy-saving lamps, and the government encourages residents to purchase. At present, white LEDs can only be used in high-power lighting such as street lights, landscape lighting and emergency lighting.
The country has also noticed the prospects and difficulties of the industry. On September 22, the National Development and Reform Commission issued the "Opinions on the Development of Semiconductor Lighting Energy-Saving Industry", striving to achieve a 70% localization rate of semiconductor chips by 2015, and to provide more policy support in technology and market.
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