LeapZipBlog: bai qiang

bai qiang's blog

30 blogs

Micro-LED surface brightness detection based on microscopic imaging system

September 18, 2018 by bai qiang  

The research team of Xiamen University and Taiwan’s Hsinchu Jiaotong University (Guo Haozhong, Wu Tingzhu, Zhao Qingwei) recently developed a micro-LED surface brightness detection system based on microscopic imaging system, which can quickly measure the position of micro-LED array at any position during operation. Absolute brightness value.

LEDs have existed for more than half a century as an active self-illuminating device. Its low power consumption, low operating voltage, high illumination, long operating life and stable performance make it a very popular application. With the development of LED technology and the growing demand for micro-integration in various industries, micro-LED array devices have emerged. By further reducing the size of the LED chip, hundreds or thousands of micro-LEDs can be fabricated in the millimeter range to form a micro-LED array. micro-LEDs have potential applications in many areas, including micro-LED displays, high-speed parallel visible light communications, and high-voltage lighting chips.

In the display field, compared with LCD and OLED display technologies, micro-LED displays have the advantages of high luminous efficiency, high brightness, high contrast, and short response time. However, due to heat dissipation, aging and other problems, the imaging defects of the display affect the imaging quality, so the defect detection of the display is necessary. However, current measurement measurements remain at a macro level and cannot be used to accurately measure micro LED arrays, and the method used to evaluate the brightness of micro-LED arrays focuses on the measurement of total brightness, failing to quickly detect bad pixels in the micro LED array. . Therefore, it is very necessary to find a fast and accurate method to check the surface brightness of the micro-LED.

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Intel and Ericsson implement the first real-time data call that complies with 3GPP's new air interface (NR) 5G standard

September 11, 2018 by bai qiang  

Recently, Intel and Ericsson implemented the first real-time data call conforming to 3GPP's new air interface (NR) 5G standard, using Intel RF millimeter wave chip and Ericsson radio system commercial equipment, including 5G NR radio AIR 5331, baseband and Intel? 5G mobile test platform. The 5G trial was demonstrated at the labs in Kista, Sweden and Santa Clara, Calif., and was the first multi-vendor data call on the 39 GHz spectrum.

The picture shows Intel's lab in Santa Clara, Calif., where engineers connect real-time data calls that comply with 3GPP's new airspace (NR) 5G standard to Ericsson Laboratories in Hitsta, Sweden.

Asha Keddy, vice president of Intel's Technology and Systems Architecture and Client Group and General Manager of Standards and Next Generation Technology, said: "The on-site 5G demonstration in the 39 GHz band marks the beginning of 5G commercial services in North America. With the Intel 5G mobile test platform with a 39 GHz RF chip/antenna, we successfully demonstrated a data call under the 3GPP standard for Ericsson's commercial 5G g-NB base station, an important step in ensuring that our commercial platform is ready for deployment in 2019. ".

The 39 GHz band is an important spectrum for commercial deployments beginning in North America in 2019, as all major operators plan to use this band. U.S. operators using a large number of 39 GHz millimeter waves will provide an ultra-fast experience based on 5G data rates. This is expected to drive a new era of communications and customer service. This latest achievement builds on Intel and Ericsson's earlier 3GPP NR standard calls on the 3.5 GHz frequency, indicating that the two companies are moving toward global interoperability across multiple frequency bands.

"The 39 GHz end-to-end data call with Intel shows our commitment to 5G in different frequency bands," said Fredrik Jejdling, executive vice president and head of network business at Ericsson. "In July we achieved interoperability at 3.5 GHz. Now at 39 GHz, these achievements will help our customers smoothly transition to 5G. This multi-vendor interoperability through commercial 5G radio marks a milestone in our 5G commercial implementation."

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Japan Fujitsu released a new super-computer "brain"

August 23, 2018 by bai qiang  

Fujitsu Corporation of Japan officially released the "A64FX" processor, the core component of Japan's next-generation supercomputer.

The "A64FX" processor features ultra-low power consumption and high reliability with at least 2.7 trillion floating point operations per second. Typically, supercomputers use tens of thousands of processors. Fujitsu said in its press release on its website that the next-generation supercomputer with the "A64FX" processor will perform up to 100 times faster than the current Japanese supercomputer "Kyoto."

The next-generation supercomputer of "Kyo" is jointly developed by Fujitsu and the Japan Institute of Physical Chemistry, and the research and development cost is about 110 billion yen (about 6.8 billion yuan). This project has received financial support from the Japanese government. Fujitsu plans to run this new supercomputer by around 2021.

According to Japanese media reports, the Japanese supercomputer "Beijing" won the global super-calcin 500 list in 2011, but has fallen to the 16th in the world in June this year, Japan is looking forward to regaining the global super by developing the next generation of supercomputers. Count the top.

In the list of the world's top 500 supercomputers released in June this year, the "superior" of the US supercomputer surpassed China's "Shenwei·Taihu Light" ranked first, which is the first time that the US supercomputer has returned to the top.

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BYD Electronic Control Latest Technology Progress: Will Increase Research on IGBT Modules

July 26, 2018 by bai qiang  

Analysts of the New Sijie Industry Research Center believe that in the future, BYD will increase the research and development of IGBT modules, on the one hand to improve the electronic control performance, to meet the needs of new models, and on the other hand to expand the market size of IGBT modules to achieve external sales.

BYD Co., Ltd. has always attached importance to the development and innovation of new products and new technologies, and regards the development of new products as an important guarantee for the company to maintain its core competitiveness. BYD has always attached great importance to the research and development of new products and new technologies. It has a strong R&D team, built a multi-disciplinary research system and a strong patent reserve, enabling the company to have global leading technology in the fields of battery, motor and electronic control. strength. The daily work of the electronic control system is to distribute the energy to the four wheels through electronic signals, and at the same time, the sensors throughout the vehicle will feedback and exchange the information of each part in time.

In the "2017-2021 China Electric Vehicle Market Analysis and Development Prospects Research Report" released by Xinsijie, the latest technology of BYD Electronic Control is discussed in detail:

In terms of electronic control design, BYD provides the BM3451/3452 series IC independently developed by BYD, which has the characteristics of high precision and high integration. Through monitoring the voltage, charge and discharge current and ring temperature of each battery to achieve battery overcharge, over discharge, over current, temperature protection and other protection functions, external capacitors can be used to adjust overcharge, over discharge, overcurrent protection delay Time. In addition, the BM3451/3452 series is available in a variety of packages to provide customers with customized chip sizes.

BYD has the core technology of VCU/MCU, which is developed by BYD's internal automotive engineering research institute. The pure electric vehicle controller is VCU and the hybrid power is HCU. In both aspects, BYD has mature technology. The technology collects driver driving signals through sensors, obtains motor and battery information through CAN bus, and shares and calculates. Motor and battery management commands are given via the CAN bus for vehicle drive control, energy optimization control and brake feedback control.

The motor controller is mainly composed of a control circuit, a drive circuit, a housing structure, and various sensors. The most important of these is the IGBT module in the drive circuit, which accounts for about 40% of the cost in the entire electronic control system. BYD is a vehicle manufacturing enterprise and produces its own electronic control products. Due to the more complicated application conditions of IGBT chips for new energy vehicles, high temperature, high humidity and high vibration, as well as assembly volume and cost, are very strict, which gives BYD's IGBT. The development and production of chips put forward higher requirements.

Analysts of the New Sijie Industry Research Center believe that in the future, BYD will increase the research and development of IGBT modules, on the one hand to improve the electronic control performance, to meet the needs of new models, and on the other hand to expand the market size of IGBT modules to achieve external sales.

Internet of Things and artificial intelligence will spawn many new morphological chips

July 10, 2018 by bai qiang  

Recently, at the “New Economy, New Journey” Entrepreneur Forum held by the Shanghai National Accounting Institute, Shi Lei, managing director and founder of Shanghai Fudan Microelectronics Group, said in his speech: IOT (Internet of Things) and artificial intelligence. The field will provide a huge impetus to the integrated circuit, which will lead to many new forms of chips.

Shi Lei believes that the development of Moore's Law to this day has been terminated, the chip width has been reduced to nanometers, and the chip can no longer be reduced, which means that the chances of later generations will be more. The so-called Moore's Law means that when the price is constant, the number of components that can be accommodated on an integrated circuit will double every 18-24 months, and the performance will double. DTM04-4P-E004

"The emergence of quantum computers means the emergence of infinite computing power. In the IC industry, we are focusing on two areas that will give a huge impetus to integrated circuits. The first is the Internet of Things, the Internet of Everything, will provide The emergence of many new morphological chips; the second will promote the development of the chip is artificial intelligence, artificial intelligence hardware acceleration, artificial intelligence framework structure changes will also appear some new chip companies, what will appear in the new chip companies What? Intelligent or semi-customized architecture."

Shi Lei believes that in the future, artificial intelligence as a programmable FPGA chip may exceed the chip made by human beings, which is estimated to be realized in two or three years. CS-DSDMDB15MF-015

Relative to the high valuation of chips in the Chinese market, foreign companies have not been highly valued for chip companies. Shi Lei believes that the main reasons for this phenomenon are two:

The first is the fierce competition in chip products, and the product replacement cycle is short. When a successful chip quickly takes over the market, there is often a new challenge chip, the boxing effect. According to the business school, the valuation is continuous. Once the continuity is destroyed, the valuation of the chip will be problematic.

The second problem is that the uncertainty of the chip is too great. The success of the chip is actually full of contingency, not the success of the indicator, but also the interaction of the industry, the greater the valuation risk. Therefore, there is some truth to the chip industry as a black hole for investment.

So, how to explain the rising valuation of China's chip industry in these years or the good performance of the capital market?

Shi Lei believes that it is very likely that the integrated circuit and the whole machine are matched. The inertia or stickiness of Chinese integrated circuits is much larger than that of international integrated circuits. "China has a large number of licenses and certifications, so that even if there is New products come out, old products are also difficult to exit. What are the benefits? For capital, you can take a breather."

What is the odds of China winning the semiconductor-free war?

April 24, 2018 by bai qiang  

April was an eventful event for China's electronics industry. First, on April 3, U.S. trade signed an additional 25% import duty on more than 120 items of technology electronic products in China. Then, on April 16, the U.S. Department of Commerce announced that it prohibited US companies from selling to ZTE. Semiconductor products, aging for 7 years.

It is not difficult to see that the United States is using the banner of "unfair trade" to take a further trade war against China. It is hard to imagine how these bans will be fully implemented and how ZTE should deal with them to survive the crisis.

A series of measures in the United States undoubtedly made a splash to China. Due to the rise of artificial intelligence and the Internet of Things, semiconductor chips have ushered in an unprecedented golden era. In 2017 alone, the amount of imported semiconductor chips in China reached 260.14 billion U.S. dollars, and China’s self-determination of semiconductor chips has become a priority. The ZTE event once again highlighted the "dead spots" of China's semiconductor chips.

To sum up the current situation of China's semiconductors, perhaps some inspiration. Current status of China's semiconductors: 1. At present, China is the world's largest semiconductor consumer country, and consumes 45% of the global market share of semiconductor chips each year. 2. China's 90% of semiconductor chip consumption depends on imports, and imports far exceed oil prices. 3. Chinese semiconductor chips started relatively late and fell behind the world average. 4. The world’s semiconductor giants have formed a complete ecological chain, and the commercialization of Chinese semiconductor companies is difficult.

A lot of people in the ZTE incident analyzed the result that both China and the United States will suffer. But in reality, the United States is "injured", but ZTE means "dead." Since ZTE collapses, the United States can continue to support other foreign communications companies to achieve alternatives and quickly absorb ZTE's market share.

Under the intervention of both governments, the two parties are likely to reach an agreement. However, if this negotiation lasts for more than two months, ZTE's inventory will be exhausted and it will have irreversible consequences.

After this incident, Chinese companies were able to learn from their pain and make more independent research and development of chips. However, in order to achieve complete self-supply of semiconductor chips in the short term, it is absolutely impossible for them to focus on the future and have an odds.

China is so powerful. Why is it that a small semiconductor chip is stuck? The fact is, in the semiconductor field, even if you have money, you cannot do what you want.

Originally, China could rely on the acquisition of semiconductor companies in other countries to obtain core interests, but a "Waistler Arrangement" has allowed Chinese semiconductor acquisitions to be rejected again and again. The Wassenaar Arrangement, also known as the Wassenaar Arrangement Mechanism, was established in 1996 after the dismantling of the Paris Coordinating Committee by the world’s major manufacturers of industrial equipment and weapons to control the international nature of conventional weapons and high-tech trade. organization. In this organization, the object of the target blockade mainly includes the major categories of vehicles: traditional weapons such as tank artillery, and weapons of the scientific and technological community, both military and civilian goods and technology. Among the countries that are restricted, there is China.

Back to the semiconductor chip industry, it is because of the Wassenaar Arrangement that it is difficult for China to acquire chip companies from abroad or import many devices in the chip field. While China wants to create its own chip technology, it needs a lithography machine, but China can't buy any advanced lithography machine equipment and independently research and develop the lithography machine's R&D experience. The gap is too big. Therefore, it is particularly difficult for China's semiconductor industry to start.

Even if the “Wassenaar Arrangement” is bypassed, or the photolithography process can be used to achieve the world standard, China is still not complete in the semiconductor chip ecosystem, and the overall progress is slow. In recent years, China has achieved a lot in the semiconductor industry. However, we must admit that there is still a wide gap between China and the world's advanced semiconductors.

In fact, China's semiconductor industry will not take short cuts to win, but long-distance travel is long. To achieve the world's top level, we must change from a fundamental point of view. The most important issue is talent. At present, China’s most in short supply is semiconductor talent to attract and cultivate semiconductor talent; followed by investment and emphasis on technological breakthroughs, and then China should increase semiconductors that encourage long-term investment in patient capital and cyclical investment in patient capital. The opportunity for companies to give trial and error cannot be achieved overnight.

The semiconductor industry is a technology-based field. Therefore, we only have constant innovation and master core technologies before we can have a certain amount of discourse in the international community. From a certain perspective, the ZTE incident is now a good opportunity for China, which can cause reflections on Chinese electronics companies and also promote Chinese industry innovation. BSM50GX120DN2

Intel accumulated more than 50 years of technical data from several scientists in materials physics before releasing the original PC chip; Samsung's flash memory technology, 3500 engineers worked successfully for 20 years to design and complete the manufacturing process. FS450R12KE3

Therefore, China also needs to maintain long-term patience and hope that they can make major breakthroughs overnight. In the semiconductor industry, such shortcuts will not work. Only by exerting national strength and maintaining unwavering semiconductor R&D determination can we complete the grand industry of semiconductor chips and let us work together for China!

TSMC expects Q2 revenue to be lower than market expectations

April 20, 2018 by bai qiang  

Due to the weak smartphone market and rising uncertainty in the cryptocurrency mining market, coupled with the appreciation of the exchange rate of the Taiwan dollar against the US dollar, TSMC estimated that the consolidated revenue in NT in the second quarter will be between 2,277.6 and 230.68 billion yuan. During the period, it fell by 7.0 to 8.2% from the previous quarter, which was lower than market expectations. TSMC also reduced its annual revenue growth target from 10-15% estimated at the beginning of the year to 10%.

Affected by the negative impact of TSMC's downward revision this year, US stocks earlier in the day, TSMC ADR fell by more than 6%, fell to 39.38 US dollars.

Foundry leader TSMC held a legal briefing yesterday (19th). The company’s consolidated revenue in the first quarter reached US$8.459 billion, a decrease of 8.2% from the fourth quarter of last year and a 12.7% increase from the same period of last year. Affected by the appreciation of the exchange rate against the United States dollar, the NT$ consolidated revenue for the first quarter of the year fell 10.6% to 248.079 billion yuan, still 6.1% higher than the same period last year. SP506CF

TSMC’s co-chief executive Wei Zhejia said that the main reason for the outlook adjustment is that the demand for smart phones is lower than expected, and the demand for cryptocurrency mining ASIC market is also full of uncertainties.

TSMC's average gross profit margin in the first quarter was 50.3%, and its operating profit rate was 39.0%. It was in line with its previous performance outlook. The single-season parent company's net profit after tax fell 9.6% to RMB 89.788 billion, a growth of 24.6% compared to the same period last year, and net profit per share. 3.46 yuan, in line with market expectations. TSMC said that 28nm and more advanced process revenue has reached 61% of the total wafer sales.

However, TSMC’s outlook for the second quarter was conservative, mainly due to the weak demand from the smart phone market. It is expected that the consolidated revenue will be between US$7.8 billion and US$7.9 billion, representing a decline of 6.6 to 7.8% from the previous quarter and 10.5% from the same period of last year. ~11.9%. Under the assumption that the exchange rate of the New Taiwan dollar against the US dollar is 29.2 yuan, the consolidated revenue in NT will be between 2,277.6 and 230.68 billion yuan, down by 7.0 to 8.2% from the previous quarter, which is lower than market expectations, but the same period of last year. Compared to still grow 6.5 to 7.9%. BTW58-1500R

TSMC estimates that the gross profit margin for the second quarter is between 47 and 49%, and the operating profit rate is between 35 and 37%. This compares with the first quarter and the same period of last year. TSMC said that the main reasons include the appreciation of the Taiwan dollar and poor product mix.

Regarding cryptocurrency computing market ASIC market changes, TSMC said that related performance in the second quarter is still better than the first quarter, and the second half will be better than the first half, but after the recent cryptocurrency price drop, 28nm ASIC demand turns Weak, strong demand for 20nm and more advanced process ASICs, so this market is still conservative and cautious.

TSMC also revised its outlook for the semiconductor and foundry market this year. TSMC estimates that the annual growth rate of the semiconductor market that does not include memory this year is about 5%, which is only 5-7 percent of the bottom margin estimated at the beginning of the year; the foundry market grew by 8% from last year, slightly lower than the forecast at the beginning of the year. Increase by 9 to 10% annually. TSMC’s revenue in US dollars this year is about 10% higher than last year, lower than the annual increase of 10% to 15% expected at the beginning of the year.

Promote the differentiation process NEC introduced a number of new 4K industrial monitors

April 16, 2018 by bai qiang  

As a leader in the high-end professional display industry, NEC has always been at the forefront of the brand, dedicated to providing more professional display services for the industry, and the first to introduce a multi-level brightness, multi-size, positioning large-screen 4K display without the market .

Recently, NEC launched its full range of new 4K large-screen displays, including the C series - 4K standard project display, V series - 4K professional engineering display, P series - 4K flagship engineering display, covering 65-inch, 75-inch, 86-inch , 98-inch, including a number of large size, brightness coverage 350nit-700nit. The three series can fully meet the needs of high, medium and low grades for displays in all walks of life. 2SD2017

NEC4K monitors use industrial-grade panels and components. The surface of the panels are all equipped with anti-glare technology, which can greatly reduce the impact of external ambient light on viewing. And the metal shell is more robust and can effectively shield electromagnetic interference and prevent deformation after long-term use. murata

NEC launched a full range of 4K new products using a 4K resolution LCD panel up to 3840×2160, built-in open OPS platform and Raspberry Pi platform, and private Garnet messaging platform, which greatly increased the application of the display. In addition, the monitor also has built-in SpectraView professional color processing chip, with a professional color grade color correction system, can easily and quickly achieve color management. At the same time, highly scalable interfaces and various installation methods can meet the needs of various industry solutions.

Fingernail-sized chips or replace supercomputers?

April 10, 2018 by bai qiang  

According to the official website of the Ministry of Science and Technology, a few days ago, MIT engineers designed an artificial synapse that can precisely control the intensity of current flowing through it, similar to the way that ions flow between neurons, and has used silicon germanium. Made of artificial synapse chips. The chip and its synapses can be used to identify handwritten samples in simulation studies with an accuracy of up to 95%. The research results were published in the journal Nature-Materials, marking an important step for portable, low-power neuromorphic chips. BSM50GX120DN2

It is reported that there are about 100 billion neurons in human brains. Neurons pass instructions through 100 trillion synapses, enabling the brain to recognize patterns with lightning speed, complete memories and perform other learning tasks. Researchers in the emerging field of "neuromorphic computing" have tried to design a computer chip that works like a human brain and works by simulating signals similar to neurons. In this way, small neuromorphic chips can handle millions of parallel computations as efficiently as the brain, and only large supercomputers are currently possible. The problem that needs to be solved in this portable artificial intelligence method is synapses.

The researchers used silicon germanium to make neuromorphic chips consisting of artificial synapses, each consisting of "input/hide/output neurons," each neuron connected to other "neurons" through filament-based artificial synapses. . Each synapse is about 25 nm, and the difference in ion flow between them is only 4%, which is the most consistent device that can be achieved in the laboratory and the key to demonstrating artificial neural networks. The researchers then performed computer simulations of the artificial neural network to identify handwritten samples. The accuracy rate reached 95%, while the accuracy of the existing software algorithms was 97%. FS450R12KE3

The team is making simulation-based neuromorphic chips that can be used to identify handwriting tasks, and expects to use its artificial synapse design to create more compact, portable neural network devices for performing complex calculations, eventually replacing fingertip-sized chips. supercomputer.

Samsung first ultra-IBM into the United States patent library boss Huawei ranked 61

April 3, 2018 by bai qiang  

In the global technology industry, one indicator of the technical strength of each company is the number of patents. According to the latest news from foreign media, the latest statistics show that as of the end of last year, the cumulative number of patents registered by Samsung Electronics in the United States exceeded IBM's number one for the first time, and the organization also pointed out that IBM's technology research and development is moving toward aging.

Almost all technology companies in the world have registered patents in the United States, so the number of patents acquired in the United States has also become an authoritative comparative indicator. fz1200r12kf5

According to the Yonhap quoted from IAM and other organizations on Sunday, Samsung Electronics has accumulated 75,596 patents in the United States as of January 1, equivalent to 1.6 times that of IBM.

IBM holds a total of 46,643 patents, and it has been the largest patent-owned company in the United States for the past 25 years.

The above statistical report points out that Samsung Electronics not only surpassed IBM’s number of patents, but that in the foreseeable future, the company may always occupy the top spot. cm75ye13-12f

The report pointed out that although IBM used to lead in the number of patents, some of its patent assets are aging. In addition, IBM will give up some patents at an early stage. "As patent assets age, IBM must further intensify innovation, or It is the acquisition of patent assets to adapt to rivals' competition."

Japan's Canon, which traditionally manufactures digital cameras, holds 38,996 patents in the United States, ranking third. With the gradual replacement of digital cameras with smart phones, Canon has begun a large-scale business transformation, targeting medical devices and other fields. A large number of patent libraries will also promote Canon's transformation strategy.

Microsoft Corp. has 33,327 patents, ranking fourth, and Intel Corp. is ranked fifth, acquiring 30,985 patents.

Another Korean company, LG Electronics, ranked seventh and held a total of 28,223 patents in the United States.

Among the top 100 companies, US companies accounted for 46 seats, and European companies took up 14 seats. China's Huawei Corporation ranked 61 and Lenovo Group had 93.

Huawei and Lenovo are also the most internationalized technology companies in China. Huawei has sold telecommunications equipment and smart phones globally. Last year, Ericsson exceeded Ericsson as the world’s largest telecommunications equipment supplier. Lenovo Group is the second largest personal computer manufacturer in the world.

Among other Korean companies, SK Group ranked 56 in the United States, LG Display ranked 65, and Korea Electronic Telecommunications Research Institute ranked 82.

Samsung Electronics overtook IBM to become the largest number of US patents, but it was not unexpected. IBM used to be the overlord of the personal computer era, but later it sold its computer business and focused on corporate IT consulting, high-performance servers, and large computers. In the Internet era, IBM's industry status began to decline. The company has entered the emerging cloud computing market, but its competitive strength is far inferior to that of Amazon.com.

Samsung Electronics is the world’s largest consumer electronics company. It owns a wide range of products and raw material components such as display panels, memory chips, and semiconductors. Samsung is also the world’s largest smartphone manufacturer. Samsung’s mobile phones are often able to rely on excellent R&D capabilities. Launched major innovations including curved screens.

In addition to traditional household appliances, raw materials, mobile phones and other services, Samsung Electronics also follows the trend and has laid out various emerging technologies such as voice assistants, artificial intelligence, machine learning, automatic driving, virtual reality, and augmented reality. Technological R&D in these areas naturally promotes the continued growth of Samsung Electronics' patents.