The LED application market is expanding, except for the metal organic chemical vapor phase epitaxy (MOCVD) machine, which is in short supply, resulting in chip production capacity, and the upstream chip material sapphire substrate is also out of stock. iSuppli warns that global LED supply is in short supply in 2010, and that there may be a serious shortage of supplies at the end of the year, unless the demand for such high-capacity devices is increased.
At present, Zhengda has launched a supplier certification operation to prevent the shortage of stock-outs at the end of the year. As for the impact of the application, it is estimated that the impact on TV backlight penetration is not large, but the production capacity of the chip will be reduced for the application of lighting applications.
In the past, the key technologies of sapphire substrate materials were mostly in the hands of the US and Japan. It is difficult for Taiwan to compete with the big manufacturers. Although the Taiwanese industry is not a large supplier, the technical threshold of the LED sapphire crystal rods in the industry's most upstream is high and good. The rate problem needs to be improved, and the manufacturer's expansion of the plant takes about six months to nine months, and the special gas is more than one and a half years. When the LED application is advancing by leaps and bounds, the upstream materials are out of stock, and the MOCVD machine of the LED factory is produced. The speed is limited, the LED industry estimates that the gap between upstream chip capacity and orders has more than doubled.
In 2009, the total consumption of LEDs reached 63 billion, up from 57 billion in 2008. Due to the sharp increase in consumption, total LED consumption last year dangerously approached the overall capacity of the entire industry - 75 billion, indicating that the capacity utilization rate of many LED manufacturers is close to 100%, and demand clearly exceeds supply.
The chart below shows iSuppli's forecast for the global LED market for 2006-2013.
The supply of sapphire substrates required for the production of LEDs is in a bottleneck, which may hinder the growth of the LED industry. Financial services provider CanaccordAdams analyst Dosheimer warned that the shortage of sapphire is serious. To meet the demand of LED, the production capacity of sapphire substrate must be two to three times, but it still depends on the expansion speed of LED market. In the past seven months, rising demand has pushed up the sapphire price by 50%, but he does not expect new production lines to start before 2011. As the sapphire substrate industry is still waiting to see if demand growth can continue, it will take one to two years for the capacity to meet demand. In addition, the LED industry requires larger sapphire substrate wafers, which also increases production difficulties.
Due to the shortage of LED supply, some companies are considering reducing the shipment of their electronic products with LED as backlight material. Bill Weissman, chief financial officer of sapphire substrate maker Rubicon, said the company expects sapphire substrate prices to rise 15% this year. But Weisman also pointed out that sapphire substrates account for only 8% of LED wafer raw materials and should not be significantly affected. The terminal price of the LED.
LTE CAT4/CAT6 Definition
The full name of LTE CAT is LTE UE-category, which is broken down to explain :LTE refers to 4G LTE network, UE refers to user equipment, and Category is translated as level. Smooth interpretation is the level of 4G LTE network transmission rate that user devices can support, which can also be said to be a technical standard for 4G network speed. Therefore, LTE CAT4/CAT6 means that the user device LTE network access capability level is 4 or 6.
Since the level is different, then its capabilities are certainly not the same, let's take a look at LTE CAT4/CAT6 affect what performance, respectively, what level. Simply put, LTE CAT affects the upper limit of 4G LTE uplink and downlink network speed, which is generally referred to as the maximum upload and download speed that a user device can achieve.
There are not only 4 and 6 levels in LTE CAT, but the table above is our list of currently known LTE CAT levels and the corresponding maximum transmission speed. Among them, LTE CAT4/CAT6 is also the current network transmission technology level of 4G mobile phones, while the faster CAT7 and CAT8 are still in the laboratory stage and have not been commercially developed.
Phones and chips that support LTE CAT4/CAT6
As far as the current 4G mobile phone market is concerned, most mobile phone products are CAT4 technology, and only a small number of new mobile phones use CAT6 technology, such as Huawei Honor 6, Samsung Galaxy S5 advanced version and LG G3 Cat6, and the concept of LTE CAT6 is proposed by Huawei Honor 6.
For the mobile phone LTE CAT4/CAT6 standard, it is directly linked to the mobile phone chip, or, if you know the processor of the mobile phone, you know which technology the mobile phone uses. For the current 4G mobile phone chips, only Huawei Kirin 920 and Qualcomm Snapdragon 805 processors for LTE CAT6, before this 4G chips are LTE CAT4, the future and Kirin 930, Qualcomm Snapdragon 808/810 will support LTE CAT6. Mediatek won't have LTE CAT6 chips until the second half of next year.
Qualcomm Snapdragon 805, 808, and 810 also support LTE CAT6
It is worth mentioning here that Qualcomm Snapdragon 805 and Kirin 920 are not the same in chip design, the LTE CAT6 baseband of Snapdragon 805 is an external Gobi MDM9x35, while Kirin 920 is a direct SoC integration, and the chip is integrated, this point Kirin 920 has ultra-high integration. It has certain advantages in power consumption and cost. As a leading international communications company, Huawei's strength can not be underestimated, but also the pride of our people.
The actual use value of LTE CAT6
Upload, download speed is our use of mobile Internet access the most concerned performance, but it should be clear that the LTECAT standard is the 4G transmission speed limit, and can not improve the transmission speed, in the operator's 4G network speed has not reached the next standard, simply raising the limit is meaningless. At present, the 4G networks of domestic operators are all LTE CAT4 standards, and the peak download speed is 150Mbps, but it is difficult to reach the upper limit of LTE CAT4 in practical applications, and even to reach 100Mbps is very difficult, so at this stage LTE CAT6 has no use value.
In terms of real life applications, LTE CAT6 is not as beautiful as we think. We can do a calculation, according to the formula 1MB/s=8Mbps, the maximum download speed of LTE CAT4 is 18.75MB/s, such a download speed, for 1080P video online playback has no pressure, even 4K online film source still can not occupy such a large bandwidth, So LTE CAT6 has no use either.
To sum up, LTE CAT6 does not have much use value at this stage, and the term is only a gimmick of manufacturers, until the operator 4G standard reaches LTE CAT6, I believe that LTE CAT6 equipment has long been popular. So as for whether the phone is LTE CAT4 or LTE CAT6, you don't have to care.
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