Development status and manufacturers of lighting level LED

With the improvement of LED efficiency and technological progress, the LED application field gradually began to enter the field of lighting by the use of backlight and indicator. However, in order to solve the problem of light and heat, LED manufacturers from the chip to the package, and even to the lamps have their own solutions, product specifications. Therefore, LEDinside readers for the current stage of the development of lighting class LED, as well as the main products of various manufacturers.

Discussion on lighting level LED specification

Lighting level LED can be explored and classified from many levels. From the chip to the end of the classification, the current can be classified from small power (High Brightness LED, 20~150mA), high power (High Power LED, <150mA), AC LED, etc.. From the package structure to distinguish can be divided into single chip package for single chip in a single package (single chip package), or in a single package with multi chip made of multi chip package (multi chip package). Different packaging structures and chips have their own suitable lighting market.

Figure-1 lighting class LED chip and package specification

Various specifications of LED applicable to LED lamps

At present, the light bulb type LED lamps used mostly for single crystal, polycrystalline packaging of high power LED, AC LED, etc.. Single crystal package of high power LED, commonly used in MR16, LED projection lamp, such as light source, directional lighting products. The 10W or more than the replacement of the light bulb LED bulbs is the use of multiple packages of high-power LED as light source. AC LED, limited by the technical bottleneck of the AC LED chip, the current general or 10W incandescent bulbs to replace the following LED majority. As for the lamp type lighting lamps, most manufacturers at this stage of the use of low-power polycrystalline packaging, but also manufacturers to take the form of high-power polycrystalline packaging.

Figure-2 LED lamps of various specifications LED

Cost comparison between LED and traditional light source

As for the cost comparison between the LED light source and the traditional light source, the LED (Lumen per dollar) at the present stage is about USD 0.01~0.02. Due to the sharp decline in the price of LED last year, so the price difference compared to traditional light bulbs by 5~10 times last year reduced to 2~4 times, which is one of the reasons for this year's LED lighting gradually heating.

However, due to the traditional lighting market is very mature, so the brightness and price of traditional lamps will not show the same proportion of change, but LED is not the same. Since LED is a semiconductor component, price and brightness will increase in proportion. In terms of price considerations, the current 10W is still below the highest penetration of LED bulbs. As for the part of the LED lights, due to product prices compared to the traditional lamp spreads up to more than 20 times, is still a commercial space or the government has the opportunity to import the case.

$/Lm comparison between Figure-3 LED and fluorescent lamp

Europe and the United States lighting class LED suppliers

CREE

CREE is an upstream chip to package integration provider. In recent years, the introduction of the Xlamp Series in the light level LED popular acclaim, both in terms of luminous efficiency or life are very competitive. The main reason is that the silicon carbide chip substrate material (Silicone Carbide) to replace the sapphire substrate, the thermal conductivity of the silicon carbide substrate is almost 10 times the sapphire substrate (Silicone Carbide has times Vertical thermal characteristics than Saphire 10), and both heat and electricity can be directly derived from vertical heat. In addition, the formulation and coating of phosphor powder also has a unique patented technology. The United States in 2009 and the upcoming Energy Star standard, CREE has been able to meet the present stage, but also has the most LM 79, LM 80 test, so for the future to shipments to lighting products in the United States, CREE LED will have a considerable advantage.

The current High Xlamp Power series includes XR-E (7090 package), XR-C, XP-E (), XP-C, and MC-E (70904 crystal package) several specifications. The differences of XP and XR specifications is package size, the size of XP is reduced by nearly 80%, can effectively reduce the material cost, and achieve the luminous efficiency of XR series, but the maximum recommended operating current by XR series of 1Amp reduced to 700mA. XP-E luminous efficiency up to 114Lm/W (cool white) MIN, and has a large number of shipments. The MC-E is the use of 4 high-power polycrystalline packaging, the overall luminous flux up to 430Lm@350mA, the proposed maximum operation of 700mA.

OSRAM

Lighting large OSRAM (OSRAM) in the LED field by the subsidiary of OSRAM Opto Semiconductors (OSRAM Opto Semiconductors) is responsible for. OSRAM Opto Semiconductors has the ability to integrate from chip to package, and has a number of white patent technology. At the end of the chip to ThinGaN technology to develop a high brightness of the LED, first on the InGaN layer to form a metal film, and then stripped sapphire. In this way, the metal film will produce the effect of mapping to get more light.

In the high power product line specifications, according to different power and divided into Golden DRAGON (1W), Platinum DRAGON (3W), Diamond DRAGON (5W). Are in a single high power LED package in the PLCC inside. In the current Golden DRAGON series of main products LUW W5AM and LCW W5AM, for example, luminous flux up to 112-130 LM and 71-82 LM, luminous efficiency is 100 lm/W and 64 lm/W.

Japan lighting class LED suppliers

Nichia

The main product of Nichia is a small power multi crystal package LED, which is connected to the PLCC package by connecting several small power LED chips. Because every single chip is assigned to a small electric