After the price "of recent years, assembling a COB market gradually become rational, but the price war is the law of the market, and now are of COB price reduction space is very limited. In order to compete for more city share, at the same time, pass on the cost pressure and keep up with the future market, many COB packaging manufacturers have the layout of the flip chip, at the same time, also appeared different inversion COB technology.

And on the market at present the mainstream flip COB technology has two kinds: one kind is first coating phosphors, into a white light, then on to the substrate of flip chip CSP chip combination technology; The second is to stick to blue chip first, and then spraying phosphors inversion combination of blue chip COB technology. That for both COB technology, who is better? The author interviewed on nine big coffee industry, and talk about current of these two technologies in the future.

Flip blu-ray or temporarily leading would eventually go differentiation application line

"The current inversion are blue chip combination with CSP chip combination maturity, relative merits, bad judgment,". MoQingWei bdo, vice President, said Dr In the future a long period of time, flip blue chips will be the mainstream.

In fact, for two kinds of technology, cause or in CSP and flip blue chips. In the context of the two kinds of chip technology development, inversion than blue chip CSP development a few years earlier. The current inversion blue chip technology has become mature, many companies have also launched products. But CSP technology although there are products, but also in an early stage. So Dr MoQingWei think blu-ray inversion COB is the mainstream in the future for a long time also fit for the development of the two technology status quo.

Of course, any product or technology development is linked with market, so there is no absolute thing. As ronda electronic marketing business enterprise group deputy general manager Dr Lu Jinyu think.

Flip COB will for flip chip packages architecture each attribute is different, join to COB substrate select there are differentiation, its advantage on the specifications and production are different, but each has technical advantages as well as the present stage must overcome can still improve project.

But for the linking to the market, ronda electronic although both process mass production ability, but how to determine a more appropriate applied in COB technology, is standing in the design and production to meet customer product choose development plan.

So to say what kind of technology is better, more is to look at the customers' requirements. Technology itself, of course, whether to meet the needs of customers, also whether this technology can do better. To this, the auspicious light electricity, senior vice President of Asia jian-hua wen said that the application of these two kinds of technology market is completely different. Because of CSPLED surface light source has obvious disadvantages in light distribution, light uniformity and color consistency is difficult to compared with flip blue chips, and the flexibility of CSP is lower. But with the development of technology, the cost advantages of CSP will gradually revealed. CSP COB will more as a CSP plant, customized for the client module used in the field of general lighting.

The silicon can lighting, managing Xia Xuesong agreed, it considers inversion blu-ray and CSP inversion should be distinguished from the application of the product and process requirements, both have their own advantages.

CSP inversion are good, but the threshold

Flip blu-ray technology mature and this is the current status quo, but does not represent a CSP technology gap is very large. In fact, from the perspective of the development of LED, the mature period of the new technology more and more short, and there is a new technology can't achieve the advantages of previous generation technology. The Jiang Xizhao chi photoelectric hai-bin zheng, deputy general manager and marketing director, said the CSP chip will take the form of module module, more convenient in the application are relatively flexible, which can be widely used in LED products. Flip COB products mainly used in tube lamp parts are relatively common, in LED application market will be a little cross, by far the CSP module in the application part relatively slightly better, but a lot of popularity also look at CSP chip module and inversion COB cost performance in the future.

CSP is its advantages, but there are also some problems. This hon optoelec LeiLiNing said, "the combination of CSP COB process is simplified, production efficiency is high, but the light color consistency is poor; and flip blue chip combination light color consistency is good, technology is relatively mature, easy to achieve".

Also as Luminus ning as vice President of national sales room. These two kinds of combination, from cost, CSP chip can be a large number of standardized production and flexible combination, applicability will be higher than flip blue chip COB, but there will be a CSP every single point of subtle differences in the color uniformity, lead to the final by secondary optical effect is poorer; The inversion principle and optical design of blue chip COB and formal COB, can maximize the use of the existing optical components and obtain and is currently COB as clean out the light.

Besides color consistency problem, rose, deputy general manager of spectrum photoelectric Yin Hui also added that although the two forms of technology is a trend in the development of LED encapsulation, but on the equipment investment is large, especially CSP more completed in fab, so small packaging companies are more cautious when input. The two products are very potential product, but market acceptance and application need time to digest.

And carry with CSP, general manager of shenzhen new moon Zou Yiming said, than the inversion process of blue chips were high, mainly imported products, price is on the high side.

CSP LED as a new technology, of course, there are some problems in it is very normal, but with the maturity of technology is more and more high, many problems will be solved.

But anyway, all these COB, all think of inversion is a trend, as for blu-ray or CSP chip combination, or to time is the best.