Today, there are several storage products such as 3D XPoint, QLC SSD, Open Channel SSD and customized SSD in data center. What types of products will become mainstream SSD in the future? This article discusses their features, cost, advantages and applications in detail. With comprehensive comparison, the author thinks customized NVMe SSD will be the mainstream in the next five years.
This article mainly tells us about basic components of photoresist, including polymer, solvent, photosensitive agent and additive. Photoresist can be divided into two types: positive photoresist and negative photoresist. Both of them have different features and application, and when choosing proper photoresist, you need to consider the resolution, aspect ratio, exposure speed and so on.
ASML, the leader in the field of lithography machine, monopolizes the high-end lithography machine market. As the technical threshold of the lithography machine is extremely high, few companies have the ability to produce high-end lithography machines. Therefore, it’s no wonder one EUV lithography machine is about $100 million, equivalent to F35, the fourth generation fighter of American Empire.
The technology of EUV is difficult to promote and its research and development requires a large of investment. Although speeding up EUV research and development means doubling expenditure, TSMC, Intel and Samsung are still willing to cooperate with ASML to speed up the development of EUV.
This article briefly introduces several reasons for the depression of Nikon and Canon and shows the structure and working principle of ASML lithography machine.
Photoresist is an etching-resistant film material whose solubility changes through irradiation or radiation of different light sources. As the core of lithography, photoresist play an important role in micro-fabrication technology. However, it’s hard to make breakthrough of research and development in photoresist.
According to latest survey of DRAMeXchange, DRAM prices will continue to decline due to oversupply and weak demand. At present, most of market share of memory are mastered by three large companies, namely Samsung, SK Hynix and Micron. The speed of decreasing or increasing production is different, easy to cause legal problem of monopoly. Fortunately, it is generally believed that market conditions...
In order to avoid losing data after power failure, there is exiting power failure protection mechanism in SSD. Based on the content of SDRAM, power failure protection mechanism can be divided into three main types. In addition, the quality of an SSD can be judged from its stability, performance and lifetime.
SSD firmware consists of mapping table, garbage collection, wear leveling and so on. The lifetime of NAND Flash is similar to the barrel principle, it’s necessary to balance the number of all blocks. The larger the OP, the faster the garbage collection and the smaller corresponding write amplification will be. So reading and writing performance becomes better, but the space the user can use will b...
The article introduces the comparison between HDD and SDD in terms of medium, performance and appearance. As we all know, Flash is divided into NAND Flash and NOR Flash. However, this article mainly tells us working principle of NAND Flash.
