Six LED application market analysis

Application: the main application market is the LED display, full-color display robust growth.
Early start of China's LED display market, the market appeared a group of highly powerful LED display manufacturer. Currently LED display has been widely applied to the station, bank, securities and hospitals. Demand on the LED, LED display LED indicators in second place behind, the overall LED sales accounted for 23.1%. As for the LED display on the brightness and lifetime requirements higher than the LED lights, LED lights above the average price, which led to the display with LED market reached 3.24 billion yuan, topped the list as more than light The main LED application market. With unique advantages, LED full color display widely used in sports stadiums, municipal square, concerts, stations, airports and other places.
Application 2: small size backlight market slowdown, the large size will become the new focus.
LED has long been used in mobile phone-based small-size LED light backlight market, mobile phone production growth led backlight market's rapid development. In particular, the emergence of color screen mobile phones in 2003 is to promote the rapid development of white LED market. But with the steady growth phase into the production of mobile phones and mobile phone technology to enhance the lead for LED LCD panel backlight to reduce the number, making the LED backlighting in mobile phones in the amount of slowdown in 2005, with LED backlight number over 1.2 billion, the future years, the growth rate will remain in the single digits. The average number of growth slowdown coupled with falling prices, leading to the small size backlight market sluggish, while large-size backlight Although manufacturers market darling, but in 2006 still can not scale. In the above two factors, the backlight market in 2006, a 1% negative growth. 2005 backlight market size of over 1.5 billion.
Application 3: Large market potential for car headlights, but the short term the market is difficult to start.
2005 China Automotive LED application market was 0.29 billion, of which automobile headlights market 0.21 billion. From the LED application market, the automotive market is still in its infancy, the market is small.
LED lights as the car driven by low power consumption, long life and the corresponding speed and quickness. Statistics show that, in the car traveling at 100 kilometers per hour, the vehicle is equipped with LED brake lights are not equipped with LED brake lights than the vehicle braking distance will be reduced by 7 feet. Currently, LED has been gradually applied to the third brake light on the car. Although the LED is still faced with the unit low wattage lumens and related policy constraints, the taillights and headlights into the car market will take some time, but with the decline in the cost-performance ratio and improved luminous efficiency, the LED will gradually realize the ultimate from the vehicle's interior, rear to the front of the transfer, and ultimately occupy the entire automotive lamp market. With the huge capacity car, LED lamp market faces enormous development potential.
Application 4: Interior lighting market has started to enter the market, traffic lights steady growth.
Interior LED lighting market is another emerging market. By current control, LED can achieve hundreds or even thousands of color change. At this stage, the era of personalized attention, LED color LED decorative lights will help diversify the market's development. LED has begun to make small decorative lamps, decorative wall applications in hotels, living room. Interior lighting market in 2005 reached 158 million.
After years of replacement work, the nation's major cities from the traditional traffic lights replaced with LED traffic lights have been drawing to a close. LED traffic lights for many years the market has experienced rapid growth after the 2005 market reached 15.2 billion yuan. But with the completion of the replacement work, LED spotlight lights will no longer maintain market growth is expected to LED traffic lights in 2006 to achieve only 5.8% of market growth to reach 1.61 billion yuan.
Application of five: the rapid development of landscape lighting market, the market growth rate peaked in 2007.
Landscape lighting market, mainly in streets, squares and other public places, decorative lighting, the main driving force mainly from the government. By the 2008 Beijing Olympic Games and 2010 Shanghai World Expo impact of Beijing, Shanghai and other organizations to accelerate the pace of landscape lighting, the LED low power consumption, electricity consumption in the huge landscape lighting market with strong market competitiveness. Currently, LED has been increasingly applied to the landscape lighting market. 2005 Chinese landscape lighting market size of more than $ 700 million in the two main activities, led landscape lighting market will reach 72% in 2007, the high growth rates. In addition, the Olympics and World Expo will be the main role is far longer on their own landscape lighting market to drive growth, more importantly, their role models. In order to meet the Olympic Games and World Expo, Beijing, Qingdao and Shanghai, will build a number of LED landscape lighting, decorative street in these projects will also serve as a model. Other cities see the LED lighting in the landscape will reduce the outstanding performance of the use of LED landscape lighting concerns, accelerate the use of LED landscape lighting applications. LED will fast from one city to the secondary and tertiary urban expansion.
Application of Six: the general lighting market road is long, long way to go.
For into the general lighting market, power white light LED in addition to face, such as low efficiency, poor heat dissipation, high cost and other issues, will face the optical, electronic control and other institutions and the integration of LED lighting products, and develop common standards . Solve these problems requires a long period of time, CCID Consulting forecasts that LED in 2010 can not enter the general lighting market.
As the hotel, Business Center, high-end commercial office buildings and other commercial establishments relative to the price sensitivity is low. At the same time these high-end places more emphasis on highlighting the quality and dignity of the position, for the new products have a greater degree of interest. These are LED lighting to reduce the barriers to entry. LED lighting is expected to be the first to enter the commercial market, and gradually extended to the civilian market.

LED lighting, energy-saving lamps to lead the wave of energy saving

In recent years, China's popular "power shortage" disturb, especially in summer electricity peak period is up, the power supply tension written swept the country. At present, the cost of lighting electricity consumption accounts for about 20%, thus, reducing lighting power consumption is an important way of parsimony, LED energy-saving lamps will come into being.
That the semiconductor light-emitting diode LED, LED energy-saving lamps with high-brightness white LED light source, high luminous efficiency, low power consumption, long life, easy to control, maintenance, safety and environmental protection; is a new generation of solid cold light source, color gentle, bright , rich colorful, low loss, low energy consumption, environmental protection, for families, shopping malls, banks, hospitals, hotels, restaurants and other public places for a long time lighting. Here, the characteristics of LED light for detailed introductions. (1) High luminous efficiency, improved efficiency LED light will reach 50 to 200 lumens / watt, and its light color is good, narrow spectrum, without colored filters can be sent directly to visible light, 90% of energy can be converted into visible light (80% of the ordinary incandescent electric energy into heat, only 20% of electrical energy into light energy). Currently, the progress of the world are stepping up efficiency LED light of the discussion, in the near future there will be greater luminous efficiency of its progress.
(2) low power consumption LED-tube Power 0.03 ~ 0.06 watts, DC drives, single-tube drive voltage of 1.5 to 3.5 volts, the current 15 to 20 mA, response speed, in high frequency operation. Under the same lighting conditions, power consumption is very incandescent bulbs, one fluorescent tube half thousand hours only power consumption of a few degrees (normal 60w incandescent seventeen hours of electricity consumption of an ordinary 10w energy saving lamps one hundred hours of electricity consumption).
(3) the use of long life light using semiconductor chips, no filament, LED lights, small size, light weight, epoxy resin, an acceptable high-intensity mechanical shock and vibration, not broken, even the life of 100,000 hours (the use of incandescent life of only one thousand hours, normal life expectancy as long as the use of energy-saving lamps eight thousand hours), the use of life up to 5 to 10 years. Reduce the use of capital units, but also can save a lot of energy, which energy is very scared of China, no doubt very important.
(4) Green solid and strong, low heat, ultraviolet and infrared light does not contain, do not produce radiation, cold light source, can be safely arrived in touch: can accurately control the light pattern and light angle, color temperature and light, without glare; LED for the whole solid light, shock, impact resistance is not easy to break. Built-in micro-handling systems to control light intensity, adjusting light way to complete the separation of light and art.
(5) green non-mercury, sodium and other substances may endanger the well-being, waste recycling, no pollution. Will not produce electromagnetic interference (ordinary lamp contains mercury and lead, elements, energy-saving lamps, electronic ballasts will produce electromagnetic interference). In summary, LED energy saving lamps have a very significant advantages, the implementation of China's LED lamps will help complete the purpose of energy saving. But there are still many problems to be the ideal treatment, for example, to increase publicity efforts to improve the popularity of LED knowledge, progress, technology to reduce capital spending to promote energy-saving LED lights to get consumer recognition and tolerance. We have reason to confidence, LED as a new energy-saving, environmentally friendly green lighting products on the market in the future shine!

The advantages of LED light source

① new green light: LED light source to use cold, glare is small, no radiation, no use of harmful substances. LED is low voltage, DC drive, ultra-low power consumption (single tube 0.03 ~ 0.06W), electro-optical power conversion close to 100%, under the same lighting effects than traditional energy sources more than 80%. LED's environmental benefits of better, no ultraviolet and infrared spectra, and recyclable waste, no pollution, no mercury elements, safe touch, typical of the green lighting.
② Long life: LED cold light source for the solid, epoxy resin encapsulation, vibration, light body and no loose parts, there is no filament light easy to burn, heat deposition, the light fades and other shortcomings, the service life of up to 60,000 ~ 100,000 hours, is the traditional source of more than 10 times the life. LED performance is stable, can be -30 ~ +50 oC work environment.
③ multi-transform: LED light source can make use of red, green and blue color theory, computer technology under the control of the three colors with 256 levels of gray, and any mix, you can generate colors, the formation of different color combination. Color changing LED light combination can achieve a variety of dynamic effects and a variety of images.
④ High-tech: with traditional light sources glow comparison, LED light source is a low-voltage microelectronics products, the successful integration of computer technology, network communication technology, image processing and embedded control technology. LED lights use traditional chip size 0.25mmX0.25nm, and the size of LED light in general should be more than 1.0mmX1.0mm. Desktop work forming the LED die structure, inverted pyramid structure and flip chip design to improve the luminous efficiency, which issued more light. LED packaging design innovations, including high conductivity metal block base, bare flip-chip design and type casting plate lead frames, etc., these methods can be used to design high-power, low thermal resistance of the device, and these devices than traditional LED illumination greater illumination products.
Currently a typical high-flux LED devices can produce a few tens of lumens luminous flux lumen to update the design of a device can be integrated more of the LED, or installed in a single assembly in multiple devices, so that the number of lumens output equivalent to a small incandescent lamp. For example, a 12-chip high power LED devices can output 200lm monochromatic light energy, the power consumption between the 10 ~ 15W.
LED light source applications are very flexible and can be made into points, lines, various forms of short, light products; LED control is extremely convenient, as long as the adjustment of current, you can freely adjust the light; different combinations of color changing light, the use of timing control circuit and better meet a variety of dynamic effects. LED lighting has been widely used in various devices, such as battery-powered flash, voice-activated micro-lights, security lights, outdoor and indoor stair lighting roads and buildings and mark continuous lighting.
The emergence of white LED, the LED lighting function to the identity function from substantial step taken. White LED closest to the sun, more exposure to better reflect the true color of the object, so from a technical point of view, the white LED is undoubtedly the most cutting-edge LED technology. At present, the white LED has entered a number of application areas, emergency lights, flashlights, flash and other products have come out, but because the price is very expensive and therefore difficult to spread. White LED popular premise that lower prices, while prices fell in the white LED to be a certain size of the market after the possible integration of both technological progress ultimately depends.

Features and advantages of LED lighting market

With the development of new materials and process improvements, LED light technology tends to highlight and full color. GaN substrate the appearance of the blue LED, the LED is expanded application areas. The main current LED applications, including large-screen color display, lighting, lasers, multimedia imaging, LCD background light sources, detectors, traffic lights, instrumentation, optical communications, satellite communications, marine communications and optical pattern recognition, etc., but also mainly used for lighting and display.
LED is produced by a superconducting high-intensity light-emitting crystal light, it emits very little heat, not to waste too much heat as incandescent bulbs, unlike fluorescent lamps, as a result of high energy consumption and generate toxic gases, unlike neon, as required high voltage and easily damaged. LED has been globally recognized as a new generation of environmentally friendly high-tech light.
LED light with high efficiency, energy saving than the traditional 80% neon, safe and reliable. LED light changes the incandescent tungsten lamps with energy-saving light of three basic principles of dye, while the use of electric light. LED wall washer light source has a long life, high luminous efficiency, no radiation and low power consumption. LED spectrum is almost entirely concentrated in the visible light spectrum, the luminous efficiency of up to 80% to 90%. The LED and incandescent lamp, spiral energy saving lamps and T5 fluorescent trichromatic comparison, the results showed that: ordinary incandescent light efficiency of 12lm / W, life expectancy is less than 2000h; spiral energy saving lamp luminous efficiency of 60lm / W, life less than 8000h; T5 tricolor fluorescent light efficiency compared to 96lm / W, life is about 10000h; and a diameter of 5mm white LED light efficiency is 20 ~ 28lm / W, life can be greater than 100000h.

High-power LED and the difference between low-power led

led light-emitting diode is a diode, characterized the current time is the wizard of light to emit different colors. Led high power led is a kind, as opposed to low-power led, the power led single higher power, brightness, brighter, higher prices. Low-power led is rated 20mA, 20mA rated current higher than can be counted as high-power basically. There are a few general power: 0.25w, 0.5w, 1w, 3w, 5w, 8w, 10w and so on. Main unit of luminance is lm (lumens), low-power unit of luminance is generally mcd. The two units can not be converted. Now emerging as a green, environmentally friendly, energy-saving light sources are widely used in car lights, flashlights, lamps and other places.
LED high power so called, mainly for low-power LED light, I summarize the current classification criteria, there are three:
The first one is based on the size of the power can be divided into 0.5W, 1W, 3W, 5W, 10W .... 100W range, depending on the package after the molding products in terms of total power varies.
The second process can be divided into its packaging: large epoxy resin, imitation of piranha-type epoxy resin, aluminum plate (MCPCB) type package, TO package, power-type SMD package, MCPCB integrated package, etc.
A third of its lumen can be divided into different levels of high-power low-light decay products and non-high-power low-light decay products.
Of course, since the parameters of high-power LED itself more, according to different parameters have different classification criteria, no class in this state. LED high power LED packages are still in a kind, is to make the semiconductor lighting. Into the general lighting in the most important part.

Grasp the LED lighting, to create green energy-saving life

Technology has been improving, LED lighting products white argument in the future will be able to achieve 200lm / w, the price will be gradually reduced to a minimum, even close to the price of incandescent bulbs, these are just a matter of time, it now appears any device, any place, any environment can take advantage of LED light era of global resources, increasingly strained far today, people demand for new power generation equipment is also growing, due to Japan in March of this year's earthquake and tsunami, caused a new a nuclear crisis, and control power consumption has become a people need to be resolved, most attention in recent years, LED lighting is probably the most representative as lighting products, through energy efficient LED lighting product to achieve control of people's use of electricity
LED lighting has long advocated, and paying attention, and into the LED lighting is also not only Japan, all over the world are in action, and a big reason is that LED lighting with long life and low energy consumption, although LED lighting products, prices gradually decline, but to achieve both low price and most efficient light sources, LED lighting products also need to develop a few years, we can see is still with prices declining, LED lighting market trends and demand continues to increase, as more and more people are concerned about the LED lighting at the technical level, there are many things that need to improve, such as a finished lamp color index, flux, lifetime, thermal structure, appearance, cost control, light emitting angles and so on, until I believe can solve these problems, to meet the LED lighting is a vast unlimited market

Upgrade to the power LED industry, green building

Energy saving LED lighting industry as an emerging industry, has been well received national attention, semiconductor lighting "second five" forthcoming in September. At the same time as the introduction of national standards LED products, LED products this year is likely to include some enjoy the financial subsidy, industrial lighting, commercial lighting may be a wide range of start. LED in all aspects of the application showed a rapid growth momentum, market research organizations LED Inside pointed out that the 1000 lumens of LED lighting for every price costs about 7-10 U.S. dollars, as costs continue to decline, from 2011 to 2012, LED lighting market will accelerate growth.
At present, China has become the world's second largest country in LEED certification, LEED-certified project application at an annual rate of 20% increase. Represented by the green LED lighting development of China's green building and an important impetus for the development of the system. Philips to provide office space for China's LED light
solutions, from the light source, lighting and intelligent control system fully in practice on the green concept. Meanwhile, the use of construction itself, and the use of natural light to the limit, with high quality LED lighting, so that the illumination can fully meet the work requirements of the case, and the maximum reduction in lighting power consumption, final achieve the project's energy consumption is minimized. Jiangsu Taicang Interface Flor construction projects, high-quality lighting solutions for Philips advanced building energy-saving lighting technology opens a new era of transformation. Interface as the world's largest carpet manufacturer, China as an important strategic market, lighting standards required to achieve LEEDGOLD requirements. For such a request, Philips designers introduced advanced dynamic lighting technology, balanced environment to improve the lighting, design lighting solutions for professional office use up and down the light of Philips TBS498, the lamps in the window Installation luxsense used for solar control. INTERFACE FLOR's Branch of the Centre as a zero-carbon used in Philips Lighting's new office building sample. The responsible person said, from the LED device R & D to design detail, as appropriate, "people first" principle, to the green building market in China continues to lead.
Greater China General Manager Mr. Liang Hanfeng Philips Lighting, said, "As China's green building user awareness and the development of standards, Philips Lighting is willing to promote China's green LED lighting in the quality and quantity of new dimensions to breakthrough. "

Japan's emphasis on safety and LED lighting performance standards

LED lighting in Japan for the Asian region to implement the results of the most significant countries, especially after the 311 earthquake energy awareness is high, bulb type LED light sales ratio has risen sharply, to June 2011 for the first time more than incandescent bulbs, as the proportion of sales in Japan market the highest power dome lighting.
Japan to promote LED lighting remarkable achievements, in addition to energy-saving awareness, but also be attributed to the Japanese power industry will be headed the ball a body corporate, to develop the LED lighting, security, performance and interchangeability and other specifications, so that when manufacturers in the production have to follow the norms, but also enables consumers to buy peace of mind.
Japan's current LED lighting standards, mainly the Japanese Industrial Standard JIS and Japanese power ball industry will JEL specifications into two categories. Of July 2011, Japan has developed JISLED total of six light-related specifications, under development, there are one, mainly related to the LED lighting module and the LED light bulb type safety and performance requirements of the matter, as LED road lighting, there were no national standards, only local governments to formulate their own specifications.
The Japanese electric industry will develop ball-related specifications of LED lighting, there are four main defining and marking the form of LED lighting and LED lighting and conventional lighting system between the mouth of gold and compatibility. LED lighting for the weight, the circuit is different from the traditional lighting system requirements etc, if the development of compatible specifications in the use of LED lighting could easily lead to damage to itself, even heat, fire and other hazards.
Japanese LED lighting-related specifications, the main reference to international standards IEC to develop these standards in a variety of LED lighting environment, safety and play with color, brightness, life, etc., excluding security and performance below the standard of LED lighting products to completely replace traditional incandescent light bulbs lighting the target.

LED street lamp market's future depends on the reliability issue is resolved

Government are currently carrying out most of the world lighting upgrade, the first step is to install LED lights in the new development area, then, LED light will replace the existing old street lighting. According to expect in the next five years, today most of the lights are LED lighting will be replaced.
However, LED lights are facing a big problem is the low reliability because it is mainly used for outdoor lighting, face a variety of extreme environmental conditions, such as long withstand sun and rain, thunder and lightning, temperature changes may be more so. LED lights to be recognized by the market and large-scale use, we must first solve the reliability issues.
TI Semiconductor Division Business Development Manager Liu Chao
TI High Performance Analog Semiconductor Division, Business Development Manager, Dr. Liu Xuechao, said: "LED street lamp market prospect, but must address reliability issues."
LED lights is an optical, thermal and electronics components of complex systems, although a longer LED life of its own, but if poorly designed LED driver circuit, such as the use of low-quality active or passive devices, and the overall life of the drive circuit not match with the LED, LED lights will affect the quality and life.
Furthermore, LED thermal management and heat dissipation is also very important, once the temperature higher than 100 ℃, LED itself, the reliability will be affected. Of course, LED early failure, and transient assembly of local defects and other factors, also led to the LED may fail occasionally, if not take appropriate protective measures diversion, a single LED failure will lead to a whole string of LED does not affect the overall effect of street lighting .
Liu Chao stressed that: "LED lamp is a complex system design, involving light, electricity, heat, mechanical and other fields. Mainly on the drive power in terms of efficiency and reliability problems. First, the driver power supply temperature is high (usually 70 degrees up and down), this way, I hope to drive power efficiency (including the constant voltage with constant current) efficiency reaches a certain height (eg> 90%), reducing the drive power of the temperature, increase reliability, and secondly, the traditional driver topology is more complex, including the PFC, PWM isolation and constant current DC / DC three circuits (see below), components and more, low reliability, especially electrolytic capacitors and opto-sensitive devices. "
Thus, in the process of designing LED bulbs, LED temperature must be well taken into account management or cooling problem, the LED operating temperature remains below its junction temperature (maximum junction temperature of 150 ℃), is generally recommended to be less than the LED operating temperature 100 ℃, avoid affected the reliability of the LED. In addition, LED spotlight circuit designer must carefully choose the circuit in the active or passive devices, to ensure match with LED life. For example, designers should avoid the use of electrolytic capacitors as much as possible, because the capacitor under the conditions in long-term use may cause leakage and result in shortened life expectancy.
Furthermore, LED lighting market in the overall, LED lights are all LED lighting applications the highest power, and therefore require multiple power levels and complex topology to meet the power factor correction (PFC), total harmonic distortion (THD) , 85 PLUS efficiency and other standards and regulations, and multi-string LED current constant demand.
Liu Chao also said: "To solve the problem of circuit reliability of LED lights, drive topology must improve, improve efficiency, reduce component count, while also further reducing costs."

Benefits of LED lights LED lights have many advantages

Into the field of LED light, lighting technology is a revolutionary leap. The development of LED lighting for the historic contribution of green, no less favorable than the high wire to the transistor from the era of vacuum tube era leap, even if the evaluation of large scale integrated circuit as the transistor to the changes across the same, and no exaggeration.

In landscape lighting, LED has a more unique advantages, can be sure, LED landscape lighting along the avenue of interdisciplinary integration, toward the artistic, intelligent, flexible in the direction of rapid development. LED is pregnant with opportunities.
In addition to mercury-free LED downlight source, energy, materials, electromagnetic interference-free environment, without harmful rays five advantages, in the lighting field, particularly in landscape lighting, there are many advantages. Such as: low-voltage power supply - no high-pressure part, much less to the cost of insulation, high reliability; accessories simple - no starter, ballast, or EHV transformers; simple structure - the biggest advantage with a solid light not inflated, no glass case, no gas sealing problems, impact resistance; controllable - fast response time (microseconds of magnitude) can be repeated frequently light off, almost no inertia, not tired; color simple and honest - - self-generated by the semiconductor PN junction color, pure, strong; rich colors - the three primary colors plus digital technology, the evolution of any color; lightweight structures - and materials, cost savings; strength and stiffness requirements for low lighting; - compact large LED lamp can be seen as cells from the LED, the LED is only the smallest magnitude square millimeters or less; flexible is good - LED compact light source, the LED can adapt to a variety of different geometric dimensions and space decoration lighting requirements, such as: point, line, surface, ball, different forms, as well as any art form of the light sculpture.