No, there are multiple companies offering OPC solutions. DJEL is one of those.
Chinese semiconductor industry
- Thread starter Hendrik_2000
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Speaking of which has there been important updates on Chinese EDA recently?
Chinese EDA startups are receiving a lot funding so the sector is pretty hot right now. There is also increase collaboration between design houses and domestic EDA makers, with the biggest increase in the auto and chiplet sector.
DJEL claims to have solved N+2 OPC here.
According to the procurement bidding data statistics of domestic semiconductor manufacturers, from January to November 2023, the wafer production lines in the statistical sample won a total of 875 pieces of equipment, of which the overall winning proportion of domestic equipment was about 47%.
ijiwei used to publish equipment public bidding info every week，but they don't do that anymore，it's pity
China's global share of semiconductor patent applications will increase to 71.7% in 2022, an increase of more than 4 times compared with 2003-2007
South Korea's "Korea Chamber of Commerce and Industry" conducted a review of the world's five largest intellectual property offices (IT Home) including China, the United States, Japan, South Korea, and the European Union. Note: A comprehensive analysis of semiconductor patents filed by IP5 (hereinafter referred to as IP5) shows that the proportion of semiconductor patents filed by China and the United States increased from 45.6% in 2003 to 92.9% last year. Among them, patents filed by China increased from 14% in 2003 increased sharply to 71.7% .
At the same time, the number of semiconductor patents applied for by the Korean Patent Office dropped from 21.2% in 2003 to 2.4% last year. From 2018 to 2022, China ranked first in the number of semiconductor patent applications in IP5, with 135,428 , far exceeding the second-ranked United States (87,573) and third-ranked South Korea (18,911). The number of semiconductor patents applied by China It has increased nearly 5 times compared with 20 years ago (2003-2007).
In the past 10 years, China has obtained technology patents not only in the field of small semiconductor components (materials, parts, equipment), but also in the fields of old general-purpose semiconductors and cutting-edge semiconductors..
Top Three
China - 125,428
USA - 87,573
South Korea - 18,911
China lacks high purity quartz sand mine（the raw material for silicon wafer）,Chinese domestic quartz sand are mostly low grade, not suitable for semiconductor grade silicon wafer . At the moment The Spruce Pine mine of the US supplies 90% global high purity quartz sand including China. Synthetic quartz sand does not require nature sand mine，however the technology is still immature at the moment.
This video is a very good explain on alignment and overlay. One particular interesting part，is that it explains why optical grating encoder is preferable to laser interferometer, because laser interferometer suffers from air refractive index issue. I remember havok talked about this，he said ASML uses optical grating encoder on DUV machine，but switch back to laser interferometer on EUV，because EUV operates in a vacuum environment，air refractive index is no longer an issue.
Bloomberg) -- ASML Holding NV canceled shipments of three top-of-the-line deep ultraviolet lithography machines to China at the request of ’s administration, weeks before export bans on the high-end chipmaking equipment came into effect, the people said, though it wasn’t immediately clear how many of the devices, which can cost tens of millions of dollars apiece, were involved.
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