Popular LED lighting technology development trend

[Source: Gaogong LED 's " LED Good Products" magazine March issue ]

The development of LED lighting industry is booming, and new technologies for LED lighting are emerging. However, the LED lighting fixtures have always faltered in the homes of thousands of households, and it is difficult to step into the shortest step of the home. The reason is that the price of LED lighting fixtures remains high, and ordinary civilians can't afford it! How to solve this dilemma? We need LED lighting technology workers to use their innovative wisdom and find solutions to benefit the people of the world.

In 2013, it will be the year of design, production and marketing of Volkswagen Lighting's affordable LED lamps. The price/performance ratio of public lighting and affordable LED lamps will determine the vitality, competitiveness and mass productivity of the newly developed affordable LED lamps. The public lighting parity LED lamps should be The average consumer electronics product that people all over the world can afford, its retail price should be close to or even lower than the current price of fluorescent energy-saving lamps. Therefore, a flat LED lamp solution with suitable design performance and competitive price performance is the key.

Low-cost solution to the current low-voltage LED light source (LVLED) has been solved by the low-voltage (VF) and high-current (IF) hot bottlenecks; but the innovative multi-core package HVLED, its high voltage ( VF), small current (IF) working conditions alleviate the heating degree of LED light source; LED drive constant current power chip through the efforts of Chinese and foreign power chip integrated circuit designers, high functional integration, simple application circuit, cost-effective chips emerge one after another; In recent years, the emergence of heat-conducting plastic radiators and plastic-coated aluminum radiators has solved the problem of isolation technology in the narrow space of lamps.

Therefore, the beautiful era of the mass production and mass listing of universal lighting and affordable LED lighting that the ordinary people can afford and use is very close!

LED lamp bead technology innovation changes

The innovation of LED lamp bead packaging technology makes the LED light effect improve every month. The price of LED lamp beads is declining. The high voltage LED (HVLED) technology is becoming more and more mature, and the heat of the LED lamp cavity becomes a reality. The LED light source modules for low-cost LED lamps are COB, COF and multi-core package HVLED. The cost of LED light source modules in the market is RMB1.00-0.80/W, among which COF and multi-core package HVLED may be preferred by cheap LED lamps.

The new LED packaging technology has a "COB" (chip on board) that encapsulates the LED die on an aluminum substrate; "Crystal and eutectic COB" that grows the leads by flip chip and eutectic techniques without using gold wires; The LED die diameter is bound to the "COF" (chip on frame) on the copper bracket; it does not need to be gold wire and package, and is directly made into the "ELC" (embedded LED chip) that can be used by the final customer in the LED manufacturing process; A multi-core package HVLED packaged in one unit, 3, 4, 6, and 8 LED dies; the LED lamp beads are connected in series to form an HVLED application. These six new LED packaging technologies have brought new ideas to LED luminaire design (Figure 1). The innovative packaging technology of LED light source guides the development of high-voltage and low-current LED light source, which reduces the heating degree of LED light source board. Therefore, the design of low-priced LED light fixture has a new choice.

Unfinished , please refer to the March issue of Gaogong LED 's " LED Good Products" magazine.

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