Costs continue to compress LED light source is expected to accelerate the replacement of traditional light sources

High power LED light emitting element, with high luminous efficiency and high luminance requirements, its performance in flip chip technology breakthrough, and has a highly integrated chip driver, the development and application of basic living lighting, coupled with the continuous compression unit cost, more is expected to replace the traditional light source, has become the mainstream application of products the future life of lighting.

From the light emitting efficiency of various daily life light source to observe, with incandescent lamp and halogen lamp as an example, probably only 20~30 lumens per watt (Lumen) level, and to fluorescent lamps for lighting technology architecture for power saving, the energy efficiency of about 70 lumens per watt.

If is the gas discharge type HID (High Intensive Discharge) lamps, the luminous efficiency can reach 100 lumens per watt level, in 2010 the development of dedicated LED solid-state light source and light source of OLED, only 80~100 lumens per watt (LED) and reached 30 lumens per watt (OLED) of the light emitting efficiency, especially the luminous efficiency of LED production the element has 100 lumens, the current level of use of incandescent lamp, the most common, although the unit cost is relatively low, but the actual use of the photoelectric efficiency is relatively low, the technical principle for electric heating wire to produce light, luminous process inevitably produce infrared and heat loss and heat will cause the air conditioning load of the environment itself. Low efficiency also resulted in a waste of energy.

Disable incandescent lamp has become the trend of environmental protection LED solid-state lighting applications gradually rise

The global ban on incandescent lamps has become a trend, but also gradually implemented in the policy side, such as GE that the United States announced the closure of the last incandescent bulb factory, echoing the United States in 2014 before the elimination of incandescent energy policy. Other countries have completed the relevant norms and act to prohibit the use of incandescent lamps, the majority will be started since 2011, as it may lead to huge change with the lighting market opportunities, in addition to the original investment related industry of the lighting industry are eager to transition into the market, but also attract huge business opportunities of semiconductor industry snatch LED solid-state lighting.

LED light emitting diode, the overall production method, application technology continues to improve, there are 800 lumens of LED bulb beyond product launch, because the LED light emitting element easily in arbitrary plane settings, and has strong resistance and high luminous efficiency and other advantages, especially with the product volume extremely good market competitiveness, the real elements have based on market application.

Based on commercial considerations, LED solid state lighting production of life light source products in the life of another focus also appears. Even if the LED element is provided with a longer life, but to achieve a long service life, on the one hand because of the product replacement rate is too low will cause the market demand growth slowed down, on the other hand, if in order to achieve long life and increased production cost, high price but will form a product into the market resistance.

LED solid state lighting product development towards the practical application of the direction of thinking

In terms of product development, in the past more emphasis on the performance of the lumens per watt of electricity, but now the face of the market to promote the application, but should pay attention to the performance of each dollar produced lumen. For example, the current mainstream 800~1000 lumens, how much cost can be achieved at the same time, to solve the color rendering performance, color performance, performance and lumen light type design, many projects have reached the same performance with the traditional light source or at least similar effects, like the other is to import the LED solid state light source to spend much time to recover the cost and these are key to the development of LED solid-state light source must be solved.

Market assessment, LED solid state light source development speed is quite fast, the traditional light source has been more crowding out effect, is expected in 2015 the global light source output value, there will be more than 50% of the LED solid state light source applications. To Philips, Toshiba, for example, has launched 800 lumens of LED bulb products, mass production products have been replaced by 60W incandescent bulb application level.

In addition, GE, LEDON OLED Lighting has been in initial equipment to replace the LED lamp module most frequently related to product development, especially in the high voltage LED technology, most chip makers have 800 lumens LED bulb production technology, most manufacturers will invest 1000 lumens high brightness LED lighting products research and development, with a high positive the application of energy efficiency and lower cost products to replace the currently used 60W incandescent bulb most widely.

Consideration of cost, luminous efficiency HV LED with great potential for development

HV LED (high voltage LED) the key concern is compared with the DC LED scheme in the high voltage (H?? V) scheme, performance can reduce the lumen efficiency decrease of light emitting element, also can in the design of more efficient collocation drive components, low manufacturing cost, production is relatively easy. Relatively easy to produce high performance / price ratio LED solid-state light source bulb type products.

LED solid state light common, in the process of using the most only need to open or close the operation can be part of state will adopt AC LED technology to cope with demand, but in fact AC the development of LED bridge rectifier is necessary, obviously high in cost, but high pressure (HV) LED chip can be used in high voltage and low current without transformer, especially HV collocation, LED in bridge type rectifying devices, but also can greatly increase the luminous element area, plus AC/DC occasions are applicable, high energy efficiency, the device cost is relatively low, also because of design should be adjustable light.

The luminous efficiency of HV LED wafer was observed, and the white light effect can reach the level of 180~200 lumens per watt under the supply of energy