IDM

OSATs (outsourced assembly and test companies) currently handle the bulk of assembly and test activity for the worldwide semiconductor industry. These companies’ factories have a manual operation legacy: Decision-making is manual. Materials and WIP (work in process) movement is manual. Practically everything in these factories is done manually. In addition, OSAT factory environments typically present many physical constraints with respect to equipment layout, material carriers and storage. All of these constraints present challenges when trying to automate material handling in these factories. OSATs also operate with far smaller gross and operating profit margins than IDMs, yet the percentage of worldwide semiconductor product handled by OSATs is currently increasing from year to year while the IDM share is decreasing. The combination of increased business volume with lower margins encourages OSATs to automate their factories, but there are challenges that must be overcome. Technical challenges abound OSATs face many technical challenges when trying to automate production. First, installed legacy equipment in these factories is typically 25 to 30 years old. This older equipment was simply not designed to accommodate automated materials handlers. For example, access doors on older equipment make automated WIP delivery and pickup nearly impossible without significant modifications to the equipment. Second, these factories are not equipped with the infrastructure needed to support automation. To start with, most of this older equipment is not SECS/GEM compliant. (SECS/GEM is the semiconductor industry's standard equipment interface protocol for equipment-to-host data communications.) This capability must either be retrofitted to the existing equipment or some other means of extracting required data from the equipment – getting it from the PLCs controlling the equipment, for example – must be employed. Similarly, the WIP carriers currently in use – wafer carriers, trays, magazines, and the like – are not designed for automation. In contrast to the semiconductor wafer fab industry, it seems that almost every company in the OSAT domain has a different idea concerning what a carrier should look like. In particular, there’s no such thing as the standard 300mm FOUP (Front Opening Unified Pod), which carries wafers from one tool to the next inside of semiconductor fabs. The variations in carrier shapes, configurations, and even gripping handles in the OSAT domain thwarts progress in OSAT factory automation. How do you design a materials-handling robot with the grippers and flexibility needed to adapt to all of these different carriers? It’s a difficult question and an expensive proposition. OSAT facilities themselves are designed for human-based materials handling, not automated materials handling, simply because they were designed at a time when automation was not contemplated. As a result, the equipment in these facilities is packed very closely together (to reduce floor space costs), as shown in Figure 1. Figure 1: Equipment in a test facility is often tightly packed, which impedes the adoption of automated materials handling. It’s very difficult to add automated materials handling equipment at floor level or even at ceiling level in these OSAT factories, as is frequently done inside of a semiconductor wafer fab. You will not see AGVs (automated guided vehicles) moving around inside of legacy OSAT factories because there’s simply no room for them to move around. Tackling the challenges So, what can be done to handle these all of challenges? You must start by understanding the nature of the operations taking place inside of the factory. As stated above, most of these operations are currently performed manually. All of the decisions and the materials transport is performed by humans. There’s simply no way to transition from a fully manual operation to a fully automated operation in one jump. It’s too far a reach. A significant amount of work is needed just to reach the level where automated decision making is possible. Key systems must be added to enable this level of automation. Many companies tried and failed to automate assembly and test in OSAT facilities about 25 years ago. They failed because the required data could not be extracted from the equipment in use and, therefore, there was no data to drive good decision-making. Too many required systems were simply lacking. For example, when AGVs were added, one or two operators had to walk along with the AGV to tell it what to do. There was no benefit from the automation in this example. There was no successful path to automation at the time. Standards needed One of the major obstacles to automating assembly and test in OSAT facilities is a lack of standards for carriers, robotics, layout, and facilities. Many front-end standards exist. The SEMI-E82, SEMI-E84, and SEMI-E88 standards designed for semiconductor fab front ends might apply, but they need to be adapted to requirements for OSAT back-end facilities. In addition, OSATs have special needs that may demand new standards. This is a real opportunity for SEMI and its constituents. An architecture for full assembly and test automation involves four layers, as shown in Figure 2. Figure 2: Full automation for assembly and test involves four layers. Starting with the data layer at the top of Figure 2, a fully automated facility needs to have database systems in place that can supply all of the data needed for making smart scheduling and dispatch decisions. These databases then feed smart, automated scheduling and dispatch applications in the logic layer. The scheduling and dispatch applications then send control commands to the automated transport and materials controllers and the automated equipment handlers in the control layer. You need to start at the top of the diagram to put all of this automation in place. The automated equipment and equipment controllers need commands from the scheduling and dispatch applications, which in turn need data from the databases to make smart decisions. So it’s the data layer and the systems that feed data to this layer that constitute the starting point for the journey to full automation. A significant amount of simulation is needed to develop optimal facility workflows. These simulations are driven by data extracted from the databases. One of the frequently ignored facets of automation is the need for backup plans. For example, what is the backup plan when an AGV fails and cannot deliver material as scheduled? Simulation helps create contingency plans for such events. A case study Applied Materials has worked with assembly and test factories in deploying full automation. Towards this objective, the factories have worked on many modifications (physical and systems) to enable this automation. For example, a die-attach machine was retrofitted for automation by removing all of its equipment doors so that an AGV could load the machine and extract completed work. Additional modifications permitted the mounting of multiple magazines on the die-attach machine’s input and output to provide the buffering needed to smooth the flow of work through the machine. Finally, simple instrumentation and networking was added to the machine to aid in making WIP delivery and pickup decisions. These machine modifications addressed only the bottlenecks in this particular machine, but even these simple modifications helped to reduce the incidence of manual handling errors, such as the misalignment of magazines or trays. Modifications like these also reduce the need for human operators, which in turn reduces operating costs. Such types of incremental enhancements in automation capability have been implemented by leading-edge companies over the past few years. Conclusion Deploying full automation for assembly and test is not only feasible, it’s necessary for future profitability. OSATs must address the challenges of rising manufacturing volumes and thin margins by reducing manufacturing errors and increasing quality. (The quality requirement is increasingly driven by the automotive industry.) Trailblazing deployments have shown that it’s possible to automate these manufacturing lines successfully. While IDMs have a longer history for manufacturing automation, OSATs are now traveling along the same path due to their rising share of worldwide manufacturing volumes. On that path, they’ll need to develop experience and new standards tailored to their unique needs. Shekar Krishnaswamy is a senior manager at Applied Materials responsible for business development and pre-sales of factory automation products and solutions. He has over 27 years of experience in all aspects of semiconductor manufacturing including wafer fab manufacturing, bump, assembly and test. His specific areas of expertise are traditional industrial engineering methods as well as systems-related methodologies such as modeling, scheduling, dispatching and factory automation. Prior to Applied Materials, Shekar held senior technical and management positions at IBM, Motorola and AMD, including management of corporate operations research departments supporting factory and service groups. Shekar has a bachelor’s degree in mechanical engineering and a master’s degree in industrial engineering and operations research. Note: SEMI has a Smart Manufacturing Technology Community. For more information or to get involved, click here.

Kyushu, the third largest island in Japan, is home to the semiconductor production bases of integrated device manufacturers (IDMs) with world-class cutting-edge technology. SONY, Toshiba, Hitachi, Mitsubishi, Fujitsu and Nissan are among the sector’s shining stars, though a host of other IDMs tied to the supply chains of other major enterprises have also set root in Kyushu. Collectively, the companies earned Kyushu the name Silicon Island of Japan.Kyushu’s flourishing IDM industry sprouted from favorable tax and other government policies that reduced semiconductor production costs to levels lower than elsewhere in Japan. Once the IC producers had established bases, equipment and materials companies naturally followed, leading to the influx of many parts manufacturers. Together, they came to Kyushu, one after another, to make the island a magnet for manufacturing. And so it was to Kyushu that a SEMI China delegation travelled for a meeting at TEL’s factory in Kumamoto to learn more about the secrets to the rapid growth of the island’s semiconductor industry and promote cooperation between Chinese and Japanese enterprises. Underscoring the rise of the Silicon Island of Japan, China will soon become TEL’s largest market, said Masami Akimoto, Chairman of Tokyo Electron Kyushu Limited, speaking at the event. Masami Akimoto hopes for support from SEMI China.The island of 12 million people contributes to the growth of the global semiconductor industry, expected to reach USD 500 billion in size in 2019 as China’s semiconductor sector, fueled in part by government-backed investment funds, continues its rapid expansion. Despite the gains, China still lags other regions in advanced manufacturing, said Lung Chu, president of SEMI China, which is doing its part to draw more advanced manufacturing to the region through its SIIP platform. The initiative encourages pan-regional cooperation with China’s semiconductor industry to promote free trade, open markets, technology innovation and IP protection – all to help China better integrate with the global semiconductor industry. SEMI China President Lung Chu(L) issues visit memorial to Masami Akimoto(R), Chairman of Tokyo Electron Kyushu Limited. Chicken shall be led by the HenUnlike other regions with comprehensive semiconductor industries, Kyushu’s is primarily focused on production and assembly, with more than 200 manufacturers of semiconductor equipment and parts.SEMI China Delegation at Tokyo Electron Kyushu LimitedTEL built its first factory in Kumamoto, a city covered by volcanic ash in the center of Kyushu, 34 years ago. Today, TEL every month produces 80 to 90 sets of equipment, each consisting of, on average, over 400 thousand parts that must be certified and authorized by TEL before delivery to its module manufacturers and assembly into complete machines. Having blossomed over the past few decades, the island’s supply chain now supplies TEL with all its equipment parts. SEMI China Delegation at Fajita WorksTEL supplier Fajita Works, a high-precision plate metal manufacturer founded in 1945, is emblematic of other companies in the Kyushu supply chain. It keeps a low public profile as it serves several longtime customers and earns ardent loyalty from its workers, an ethos reflected in the change next January of its slog from “Only One” to “Great company, Great life.”Quality is the life of the enterpriseLong before the rise of its legendary automobile and consumer electronics companies, Japan was known for inferior, counterfeited products, labeled “Made In USA” and shipped to the United States by more than 100 factories. The net effect was to shrink and commoditize American markets. The tide in Japan’s product quality and stained reputation began to turn in the 1980s, when Japan’s semiconductor industry began to produce memory with an error rate 27 times lower than its U.S. competitors, giving Japan an upper hand in quality that it would never relinquish. SEMI China Delegation at HORIBAKyushu-based flowmeter supplier HORIBA, among the many Japanese companies famous for their product quality, ships 38 percent of its products into the automotive market and 27 percent into the semiconductor sector. Cleanliness is as vital a part of the company’s culture as quality. Each depends on the other, with fine detail held to the highest importance. On its visit to HORIBA, the SEMI China delegation, passing by an office area before entering the factory, sighed at the sight of the spotless, neatly kept furniture and workspace: They had never seen an office so sparkling clean. HORIBA’s success is rooted in immaculate offices, factories and the company’s motto “Enjoy innovation and pay close attention to product quality.”After Kumamoto sustained heavy damage during a 2016 earthquake, HORIBA workers returned rocks scattered by temblor to their original position, knowing that order is critical to lean, efficient manufacturing and that, indeed, “the devil is in the details.” SEMI China Delegation in Kumamoto City Full confidence in the exploration of Chinese marketConsumer electronics stalwarts Sony and Panasonic feature semiconductor factories in Kagoshima, the southernmost city in Kyushu and Japan, though rumor had it two years ago that Panasonic planned to pull out. The Panasonic plant, which provides batteries for Tesla, remains. The Sony facility produces image sensors for the iPhone.Semiconductor equipment maker ULVAC, SEMI China’s most important strategic partner, is also based in Kagoshima. During the delegation’s visit to the company, Lung Chu noted that while China is the world’s largest semiconductor market, the region meets just 13 percent of domestic chip demand. Stressing that ULVAC can play a crucial role in helping China become a bigger player, he expressed admiration for ULVAC’s professionalism along with hope that it will maintain its rapid growth and leverage SEMI resources to catalyze rapid development of Internet of Things (IoT), artificial intelligence (AI), and 5G technologies in China and rise into the top 10 of global equipment manufacturers. SEMI China President Lung Chu (L) issues visit memorial to ULVAC Kyushu President and CEO Kenji Yamaguchi ULVAC Kyushu president and CEO Kenji Yamaguchi made clear the company’s interest in Lung Chu’s insights into Chinese semiconductor industry while underscoring its core competency of producing semiconductors for flat panel displays. The Kyushu Factory of ULVAC is full of vitality and market competitiveness. SEMI China Delegation at ULVAC EBARA, a precision machinery company located in Kumamoto, has manufactured chemical-mechanical planarization (CMP) equipment for over 20 years and delivered nearly 2,400 mechanical polishing machines worldwide. While the company expects to ship 50 sets per year to China starting next year, it has the capacity to deliver 20 sets per month, enough to meet demand of Chinese semiconductor makers. SEMI China Delegation at EBARAThe most telling takeaway from the SEMI China delegation’s visit to the Kyushu: Japan ranks number one worldwide in research and development (R D) investment as a proportion of GDP and is also at the top in the percentage of R D funds controlled by private enterprises. The outsize investment strategy has enabled Japan to maintain its hold as one of the world’s top technology innovators.Like Sakurajima, the famed Kyushu volcano, the SEMI China delegation will continue to harness its forces to build relationships with the island’s semiconductor supply chain as it works to develop win-win pan-regional relationships and foster the growth of China’s semiconductor industry. Best view of Sakurai volcano Gang Yao is a marketing director at SEMI China.

SEMI-MEMS Sensors Industry Group (MSIG) welcomed a global group of industry executives to its 14th annual MEMS Sensors Executive Congress (MSEC), October 29-30, 2018 in Napa, Calif. MEMS and sensors represent a robust sector of the electronic industry. Analyst firm Yole Développement expects the global market for MEMS and sensors to double in the next five years, reaching $100B by 2023, spurred by growth of autonomous mobility products such as Internet of Things (IoT) devices, autonomous cars, fitness and healthcare wearables, and agricultural sensors.“From drones that navigate any terrain in all lighting conditions, robo-taxis that ‘smell’ cigarette smoke, and sensors that monitor animal welfare and food safety, MSEC speakers shared inventive use cases representing new opportunities for MEMS and sensors suppliers,” said Carmelo Sansone, director, MEMS Sensors Industry Group. “Our keynote speakers spurred attendees to collaborate for the greater good. MITRE Corp. cybersecurity expert Cynthia Wright exhorted attendees to proactively address cybersecurity. DARPA Microsystems Technology Office (MTO) program manager Ron Polcawich invited participation in a rapid innovation and production concept that could dramatically speed design cycles for new MEMS. They exemplify the cross-pollination among commercial industry, government and academia that will continue to advance MEMS and sensors.”Getting serious about cybersecurityMITRE cybersecurity expert Cynthia Wright opened MSEC 2018 with a keynote on cybersecurity, alerting attendees to a topic that few in the industry have explored in-depth — but to which they need to pay attention.“Billions of connected mobile devices democratize knowledge, diversity and boost economies, and accelerate innovation by connecting humans to one another and to our environments,” said Wright. “At the same time, they easily create huge networks that carry operationally and personally sensitive data.”Because MEMS and sensors are deeply embedded into this vast array of connected devices, industry needs to get involved now or risk potentially grave consequences, claimed Wright. “From the destruction of critical infrastructure, cyberattacks on life-critical medical devices such as insulin pumps and heart monitors, and intrusions on autonomous vehicle safety systems, MEMS and sensors suppliers have a responsibility to help improve cybersecurity of connected devices,” she added.Allaying the potential fears of a roomful of suppliers envisioning complete redesigns of their products, Wright said that not every device requires the same level of security, and suppliers can make a difference with even “minor tweaks.” Wright suggested encryption at the edge and process authentication. She also gave MSEC attendees a list of design precepts: Build it in. Don’t bolt it on — Design your device with security in mind instead of retrofitting it after-the-fact to realize the most elegant design. Beware of shadow IT — You can’t protect what you don’t know about. Consider physical asset security; software/sensor-guided decision-making; personal or operational data collection; and key process control. Realize your points of vulnerability — because MEMS and sensors are susceptible to spoofing. Learn from cyberattacks of the past — even if they have not been tied directly to MEMS/sensors. Understand IoT software — Realizing that IoT software acts on what the hardware tells it, pay attention to altered sensor data that can lead to altered system performance. When asked about the role of US government regulation on the security of connected devices, Wright acknowledged that Europe has more restrictive cybersecurity guidelines than the US.“At the same time, it does not make sense to have two different approaches to cybersecurity of devices. US suppliers who implement more security measures can sell to both markets and to other parts of the world.”If she could leave MSEC attendees with a closing thought, it might be that companies “don’t need to put a firewall on a toaster.”“Not every chip has to be secure-foundry secure, but it would be nice if even 10% could hit that mark,” added Wright.Rapid Innovation through CollaborationIC designers typically enjoy three to four design cycles in a calendar year, leading to swift advancement of electronics over subsequent years.Designers in the MEMS community, however, generally have access to one design cycle or less per year, and typical time-to-market is four years for a new product. That slow fabrication pace has hindered deployment of innovative MEMS designs — and it’s something that MSEC closing keynote speaker, Ron Polcawich, program manager, DARPA MTO, would like to change.Polcawich’s vision of government collaboration with industry and academia spawned the investigational Rapid Innovation through Production MEMS (RIPM) Workshop, which Polcawich and his team held in May 2018. During his keynote, Polcawich shared lessons learned from the workshop while inviting MSEC attendees to get involved.Before RIPM can become a program, Polcawich knows it will require definition. What would a program concept look like? What is the best way to articulate the potential benefits to the MEMS community, and what additional inputs would be needed?“This is a daunting challenge from a program planning perspective,” said Polcawich. “In developing RIPM, we realized that we needed representatives from the entire MEMS ecosystem – integrated device manufacturers, or IDMs, equipment suppliers, foundries, and materials’ providers — to literally come to the table to tackle a common goal. Given the potential for the MEMS industry at large to benefit from rapid innovation and production, we hoped that competitors would realize that leveraging established MEMS processes could deliver significant benefits over the historically entrenched approach: one product, one process.”Polcawich believes that MEMS suppliers might relinquish the one product, one process paradigm if they knew that their IP were secure.“While technical challenges to realizing RIPM abound, we knew that we could tap the MEMS industry’s vast knowledge base to address them,” he said. “IP protection is an equally complex issue, and one that may bear a range of approaches. One model could ensure that each IDM owns their IP while the foundry owns the process technology, which it licenses to other companies through process development kits. In addition to speeding innovation, it also provides new revenue sources for the industry.”Polcawich sees RIPM as a win-win for both commercial industry and for the DoD. Speeding design-to-deployment of new MEMS devices could open new and larger markets to MEMS suppliers. It could also support greater product-line diversification and new revenue streams for foundries and other ecosystem members. The DoD could tap new MEMS devices for strategically important applications like tactical radios, unmanned aircraft systems such as drones, and image autofocus for cameras. Polcawich encouraged SEMI-MSIG members to get involved by emailing his group: [email protected] Hall of Fame MembersThree new industry leaders joined the SEMI-MSIG Hall of Fame, first established in 2011 as a means of honoring those who have made a substantial contribution to SEMI-MSIG. Selected by members of the Governing Council, 2018 Hall of Fame inductees include: Michelle Bourke, strategic marketing director, Customer Support Business Group, Lam Research Eric Pabo, business development manager, MEMS, EV Group Yoshio Sekiguchi, senior strategic advisor, TDK InvenSense Technology Showcase WinnerMSEC recognizes the latest advancements in applications enabled by MEMS and sensors — including those demonstrated by entrepreneurs competing in the Technology Showcase. Selected by a committee of industry experts, five finalists did their best to impress attendees with their technical approach and go-to-market strategies. The 2018 Technology Showcase winner, Alertgy, presented a biosensor-based wristband device that provides non-invasive, real-time blood glucose monitoring for people with type 2 diabetes, which affects more than 20 million Americans and hundreds of millions more worldwide. MSEC 2018 Sponsors MSEC 2019 Location and DatesMSEC 2019 will take place October 22-24, 2019, at the Coronado Island Marriott Resort Spa in Coronado, Calif., just minutes from downtown San Diego.For more information on MSEC 2019 and other SEMI-MSIG events and programs, please follow @MEMSgroup on Twitter, visit MSIG at SEMI and subscribe to SEMI’s weekly newsletter, SEMI Global Update.Maria Vetrano is a public relations consultant at SEMI.