Analysis of the trend of innovation in cheap LED lamps

The LED lighting industry is booming and new LED lighting technologies are emerging. However, LED lighting fixtures have always been faltering in the homes of millions of families. It is difficult to step into the shortest step of the people's home. The reason is that the price of LED lighting fixtures remains high, ordinary civilians can not afford to buy! How to solve this dilemma? We need LED lighting science and technology workers to play innovative wisdom, find solutions to benefit the people of the world.

2013 will be the year that Volkswagen Lighting's affordable LED lamps compete for design, production, and listing. The price-to-price ratio PK of the popular lighting LED fixtures will determine the vitality, competitiveness and mass productivity of newly-developed low-cost LED fixtures; popular lighting LED fixtures should be The average consumer electronics product that can be used by ordinary people all over the world, and its retail price should be close to or even lower than the current price of fluorescent energy-saving lamps. Therefore, the design of suitable performance and cost-effective competitive LED lamp program is the key.

Low-cost solution The current low-voltage LED light source (LVLED) has been unable to solve the hot bottleneck caused by low voltage (VF) and high current (IF) operation; however, the innovative multi-core package HVLED has its high voltage ( VF, low current (IF) working conditions alleviate the degree of heating of the LED light source; LED drive constant current power chip through the efforts of Chinese and foreign power chip integrated circuit designers, high functional integration, application circuit is simple, cost-effective good chip emerge one after another; In recent years, the emergence of heat-conducting plastic radiators and plastic-coated aluminum radiators has solved the technical difficulties in isolation of narrow spaces.

Therefore, the era of mass production and mass-marketing of affordable, affordable mass-market LED lighting for ordinary people can be very near!

LED lamp beads technology innovation changes

The innovation of LED lamp bead encapsulation technology makes the LED luminous efficacy improve every month, the price of LED lamp beads keeps falling, and the high-voltage LED (HVLED) technology is maturing, and reducing the lumen heat of LED lamps becomes a reality. The LED light source modules for affordable LED lamps are COB, COF and multi-core packaged HVLED. The market demanding LED light source module cost is RMB1.00-0.80/W, among which COF and multi-core package HVLED may be preferred by cheap LED lamps.

New LED packaging technologies include the “COB” (chip on board) in which the LED die is packaged on an aluminum substrate, and the “flip-chip and eutectic COB” that use the flip-chip and eutectic technology to grow the leads without gold plating; "COF" (chiponFrame) with a core diameter bonded to a copper support; no need to make gold wires and packages, and is made directly into the "ELC" (embedded LEDchip) that can be used by end customers in the LED manufacturing process; packaged in one unit, 3 "Multi-core packaged HVLED" of 4, 4, 6 and 8 LED die; a series of LED lamp beads in HVLED applications. The six new LED packaging technologies have brought new ideas to LED lamp design (Figure 1). The innovative packaging technology of LED light sources has led to the development of high-voltage and low-current LED light sources, which has reduced the degree of heat generation of LED light source boards. Therefore, there has been a new choice for low-cost LED lighting designs.