My impression is that GaN-on-GaN is really difficult. Which gets to the question of what exactly is its advantage over other higher cost GaN types like GaN-on-Sic or GaN-on-Diamond.
Chinese semiconductor thread II
- Thread starter vincent
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Chinese in general have very strong entrepreneurial sprit. Rather being a manager of Huawei or BYD, they will rather be a boss in their own companies no matter how small, even if it is just a food store.
North China Electronics Group (NAURA) strategically acquires 90% equity stake in Chengdu Guotai Vacuum
North China Electronics Technology Group officially completed the acquisition of 90% equity of Chengdu Guotai Vacuum Equipment Co., Ltd. (hereinafter referred to as "Chengdu Guotai Vacuum").
Chengdu Guotai Vacuum, established in 2013, focuses on the independent research and development and industrialization of optical vacuum coating equipment. Its products cover multiple cutting-edge fields including optical instruments, optical communication, sensors, mobile phone lenses, infrared, lasers, medical devices, automotive electronics, and AR/VR, serving over 400 clients. The company has made breakthroughs in several core technologies, successfully achieving the localization of key optical equipment such as electron beam evaporation equipment and magnetron sputtering coating equipment. Furthermore, through its independently developed radio frequency ion source and optical film thickness monitoring system, it has broken the technological monopoly of foreign companies in the field of high-end optical coating equipment.
Vacuum coating equipment is a crucial support for strategic emerging fields such as automotive lidar and AR/VR optical waveguide devices, and its technological level directly determines the performance of downstream components.
Through this acquisition, the two parties will achieve deep synergy in technology and products. Chengdu Guotai Vacuum's product portfolio in the field of precision optical coating will complement Naura Technology's equipment layout in the precision optics market; while Naura Technology will leverage its core technology reserves and full-industry chain resources to help Chengdu Guotai Vacuum expand its production capacity and market reach.
The Alashan MPCVD superhard new materials project, with a total investment of 3 billion yuan, has commenced construction.
The groundbreaking ceremony for the Alashan MPCVD superhard new materials project was officially held in the Alashan High-tech Industrial Development Zone. Invested and constructed by Inner Mongolia Chenqiong Superhard New Materials Co., Ltd., this project is a key initiative for the local government to focus on high-end manufacturing and promote industrial upgrading.
The project is expected to have a total investment of 3 billion yuan and plans to produce more than 6 million carats of high-end lab-grown diamonds and functional diamond products annually. Once fully operational, the output value is expected to be close to 2 billion yuan. According to the construction plan, the first phase of the project will be completed and put into operation before the end of 2026.
The diamond material involved in this project is known as the "king of new materials." It has excellent properties in mechanical and electrical aspects, as well as super corrosion resistance. It is widely used in many high-end fields such as machinery manufacturing, aerospace, and jewelry. MPCVD is a method for preparing diamond. Diamonds produced by this method have high purity and good crystal quality. It is the optimal technical route for the production of electronic-grade diamonds and plays an irreplaceable role in strategic emerging industries such as new energy and next-generation information technology.
The project is expected to have a total investment of 3 billion yuan and plans to produce more than 6 million carats of high-end lab-grown diamonds and functional diamond products annually. Once fully operational, the output value is expected to be close to 2 billion yuan. According to the construction plan, the first phase of the project will be completed and put into operation before the end of 2026.
The diamond material involved in this project is known as the "king of new materials." It has excellent properties in mechanical and electrical aspects, as well as super corrosion resistance. It is widely used in many high-end fields such as machinery manufacturing, aerospace, and jewelry. MPCVD is a method for preparing diamond. Diamonds produced by this method have high purity and good crystal quality. It is the optimal technical route for the production of electronic-grade diamonds and plays an irreplaceable role in strategic emerging industries such as new energy and next-generation information technology.
Sifangda: Capable of mass-producing 12-inch diamond substrates
Sifangda (300179) recently responded to questions raised by investors on its investor relations platform.Investor
Question : Company Secretary, Moore's Law for semiconductor materials states that the higher the integration level (below 2 nanometers), the greater the device power, making thermal management particularly important. Diamond has unparalleled thermal conductivity. Does the company have any products related to this? Or are you considering increasing your development efforts in this area?
Sifangda's reply: Hello, diamond has advantages such as a large bandgap, high breakdown field strength, and high thermal conductivity, and can be used in optical windows, chip heat sinks, semiconductors, and power devices. Our company is a domestic CVD diamond manufacturer with significant equipment scale advantages, possessing proprietary MPCVD synthesis and processing equipment technology and CVD diamond growth process technology. Currently, we have the relevant production capacity for mass production of large-size (12-inch) diamond substrates and thin films. The company will continue to monitor relevant market opportunities; please refer to publicly disclosed information for specific details. Thank you for your interest in our company!
Chipsys' GalaxSim emulator has been ranked among the top-rated domestic EDA tools.
Chipsys' GalaxSim emulator has been ranked among the top domestic EDA tools in China’s first user-driven "Domestic EDA Tool Reputation Ranking" campaign by China Electronics News. The recognition is based on real-user feedback and highlights GalaxSim's strong reputation for being easy to use, user-friendly, and high-performing.
Since its launch in 2021, GalaxSim has been adopted by leading institutions including the Chinese Academy of Sciences Semiconductor, ZTE Microelectronics, Nuclei Technology, and Black Sesame Technologies. Its latest version, GalaxSim Turbo 3.0, boosts verification efficiency for RISC-V processors (e.g., OpenChip "Xiangshan" Kunming Lake architecture) by nearly three times, thanks to its dual-event and cycle-driven simulation engines.
Key advantages over traditional tools like Verilator include:
- Full support for Verilog/SystemVerilog syntax, including SVA and Functional Coverage
- One-click test case switching
- User-friendly Testbench porting with reduced maintenance costs
- Dynamic thread management at runtime (vs. fixed threads in Verilator)
- High parallel efficiency and intelligent resource allocation
- Faster, integrated debugging via parallel waveform download in XEDB format
Xinhuazhang Technology (GalaxSim’s developer), co-CEO Xie Zhonghui, emphasized that user-centric design and trust-building are essential for domestic EDA growth. In October 2025, Xinhuazhang will open GalaxSim to Chinese chip startups, enabling them to directly use the tool in development—cutting R&D cycles and accelerating innovation.
This move supports China’s goal of achieving independent control and sustainable advancement in semiconductor technology.
This move supports China’s goal of achieving independent control and sustainable advancement in semiconductor technology.