Silicon substrate LED: positioning in the high-end market confidence

"Although the LED market entered the accelerated integration period, but the industry still present in the high-end LED products are scarce, while the low-end everywhere and falling prices are still in the state, and the enterprise strategy, more and more enterprises begin to vertical integration, the advantages of continuous downward, to enhance the market competitiveness. Liang Fubo, vice president of crystal energy in the light during the Asian Development LEDinside said.

Crystal energy vice president Liang Fubo to explain the product to customers

As the world's first LED industrial silicon substrate, crystal in the industry has always been low-key walk, and at the beginning of this year, the first prize of national technological invention award a time for crystal fame. Optics Valley, Nanchang came out to build a construction industry with billions of LED planning of Jiangxi Province, followed by the global crystal silicon substrate LED business partner program started, behind a series of events, seems to be able to trade the Declaration: crystal crystal to the window of opportunity has arrived!

The silicon substrate is a vertical structure LED

"It can be said that the silicon substrate is for the vertical structure of the LED. Said Liang Fubo.

Why is the silicon substrate produced by the vertical structure LED? This is from the vertical structure of LED itself. At present, most of the medium and small power chips are sapphire LED chips, the P electrode and the N electrode substrate are on the same side (Figure 1); the vertical structure is the P electrode and the N electrode on both sides of the substrate (Figure 2). At present, the sapphire vertical structure of the LED approach is the sapphire substrate is stripped, at the bottom of the chip coated with highly reflective material coupled with conductive thermal conductivity of the substrate material structure. Therefore, the use of sapphire substrate, it is necessary to use laser stripping, which will lead to low yield, high cost, and the high temperature of the LED epitaxial material may be damaged.

But the silicon substrate is completely different, not only in the growth, far less than the cost of sapphire substrate materials, but also by chemical corrosion stripping in substrate, efficiency, yield and reliability, are much higher than the sapphire substrate must be using laser stripping method. Because the stripping of the silicon substrate, LED out of direct light is N surface, which is a single light, compared to the LED five surface light, silicon substrate vertical LED beam concentration, good directivity.

It is worth mentioning that, in the process of combining the white chip technology, the silicon substrate can also increase the luminous flux per unit area and the color uniformity of the chip surface, which provides the possibility for high quality lighting. At the same time, the ceramic packaging technology can improve the reliability of the product.

Silicon substrate LED product positioning in the high-end market

Liang Fubo said that the silicon substrate LED is the core competitive advantage of silicon, silicon products hit the high-end market strategy to replace foreign imports.

At present, the crystalline silicon substrate LED can be roughly divided into blue light vertical LED and ultraviolet vertical LED series.

Blu ray vertical LED aimed at automotive lighting, mobile phones and other emerging high margin market, these areas need to use high-power vertical LED, which is precisely the core advantages of crystal energy can be photoelectric. Among them, automotive lighting, crystal from the second half of 2015 to force, a large number of shipments of car headlights now and strip lights, making crystal in automobile headlight market can stop the heel, this piece of the market is expected in the 3 quarter of this year will usher in a breakthrough.

In the mobile phone market is crystal flash, the volume of the largest domestic company, rose sharply from 2015 to the first half of this year the small batch of products have been used in ZTE, HUAWEI, BBK, millet, hammer, VIVO and other domestic high-end mobile phone brand. Liang Fubo introduced: we have a very professional team of mobile phone flash development, early spent a lot of time and mobile phone manufacturers to communicate, design, through the trial plant, and now the order began to explosive growth. "

UV LED, according to the solution of crystal began very early layout, as early as 2015 on the launch of the 380-410nm high efficiency UVALED products, mainly used in industrial curing. Industrial curing generally requires high power LED, which is in line with the technical advantages of crystal photoelectric. Liang Fubo said: "from the first half of this year, the market in the UV straight up, as one of the development direction of latticepower key late, will continue to expand the market is expected to sterilization, ultraviolet chip vertical proportion will reach 30%-50%. "

Liang Fubo confident said: crystal silicon substrate LED products are already mature, we are making the advantage of the market segments, in these markets to achieve the ultimate, with the master with the dance, we are very confident. "

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