Sumco : CSR Report 2017

SUMCO

SUMCO Corporation CSR Report

2017

Message from the Management

Aspiring to Serve as a Good Corporate Citizen

CEO & Chairman of the Board

Mayuki Hashimoto

COO & President

Michiharu Takii

SUMCO Vision

1. World's Best in Technology

2. Deficit-Resistant Even during Economic Downturns

3. Empower Employee Awareness of Profit

4. Competitiveness in Overseas Markets

Semiconductor devices are used in every facet of our lives, from data terminals such as smartphones and personal computers, home appliances including televisions and air conditioners through to automobiles, trains and other vehicles. Providing the technological base for such devices, silicon wafers are critically important in maintaining today's standard of living.

SUMCO is a specialized silicon wafer manufacturing company. With the aim to be a good corporate citizen and contribute to the development of industry and the improvement of people's quality of life by supplying silicon wafers, the SUMCO Group has been promoting CSR activities.

Corporate Governance

The SUMCO Group endeavors to maintain fairness, efficiency and transparency in its management by further enhancing its corporate governance.

In March 2016, SUMCO shifted from a Company with a Board of Corporate Auditors to a Company with an Audit and Supervisory Committee. It has been a year since the new system was put into place, whereby certain Directors who are Audit and Supervisory Committee Members with voting rights on the Board of Directors supervise execution of opperation by directors. We appreciate the resulting enhancement in the effectiveness of audit and supervision.

Also, in conjunction with the transition to a Company with an Audit and Supervisory Committee, SUMCO increased the number of Independent Outside Directors from three to four. We recognize that this has made it possible for the Board of Directors to engage in discussions supported by a greater breadth of knowledge and insight with a greater variety of perspectives, and we value the further activation of the Board of Directors and the enhancement in fairness, efficiency and transparency in our management.

Compliance

The SUMCO Group follows the SUMCO Charter, a code of conduct that all officers and employees must comply with.

The SUMCO Charter broadly covers various social norms that ought to be followed by companies, such as fair business activities, blocking relationships with anti-social forces, compliance with security trade control, etc., as well as compliance with laws and regulations.

Similar charters are implemented by all companies in the SUMCO Group. Our group-wide efforts will continue to ensure that our corporate activities are sound and in accordance with social norms.

Risk Management

The SUMCO Group has a global market share of approximately 30%, meaning as if our silicon wafers are used in one in every three to four electronic devices around the world. The stable supply of products is therefore our most critical management challenge and an important social responsibility. In addition to managing risks to ensure stable supply, SUMCO takes steps to maintain and improve its business continuity plans that include supply chain-related measures.

Environmental Conservation

The production of silicon wafers requires plenty of electricity, water, and chemical substances. The SUMCO Group strives to reduce its use of each of these, as well as the amount of industrial waste generated, by setting reduction targets for each item. We also ensure that harmful chemical substances and waste are handled and managed properly to minimize the environmental risks resulting from our business activities.

With Our Stakeholders

The SUMCO Group aspires to promote social development through the supply of silicon wafers while endeavoring to contribute to the well-being of the stakeholders who support us.

"Work style reform" is a current topic in society. As part of our efforts to maintain an environment that supports the balancing of work and child-rearing, we opened "SUMCO Nursery School Imari" at the Kyushu Factory (Imari) in November 2016. Part of its enrollment capacity is allotted to non-SUMCO employees in the local community. By making it open to the public, we hope to contribute to the vitalization of the area.

Going forward, we will engage in various types of dialog with stakeholders in order to proactively leverage their opinions and desires within our management activities.

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Outline of the SUMCO Group (As of April 1, 2017)

Message from the Management 1

Company Information

Group Companies

Editorial Policy 3 Outline of the SUMCO Group 4 Business of the SUMCO Group 5 SUMCO Vision 7

CSR Management

SUMCO's Stance on CSR 9

Corporate Governance 10

Editorial Policy

The objective of this report is to convey the SUMCO Group's stance on CSR and report its activities to stakeholders in order to enhance their understanding and earn their support. This report has been prepared with reference to portions of the Global Reporting Initiative (GRI) Sustainability Reporting Guidelines, Version 4.

Period Covered

January 2016 to December 2016

Data for periods outside the above are noted as such.

Trade name Head office Establishment Main business

Capital Representative

Group companies

SUMCO Corporation

1-2-1 Shibaura, Minato-ku, Tokyo July 30, 1999

Manufacture and sales of silicon wafers for semiconductors

138.718 billion yen

Mayuki Hashimoto,

CEO & Chairman of the Board

7 companies in Japan; 12 companies abroad

Japan

SUMCO TECHXIV Corp.

SUMCO Technology Corp. SUMCO Service Corp.

SUMCO Support Corp.

Overseas

SUMCO Phoenix Corporation SUMCO Southwest Corporation SUMCO Funding Corporation STX Finance America, Inc.

SUMCO Personnel Services Corporation SUMCO Europe Sales Plc

SUMTEC Service Corp.

SUMCO Insurance Service Corp.

Japan Formosa SUMCO Technology Corporation

PT. SUMCO Indonesia SUMCO Singapore Pte. Ltd. SUMCO Korea Corporation

SUMCO Taiwan Technology Corporation SUMCO Shanghai Corporation

FORMOSA SUMCO TECHNOLOGY CORPORATION

Compliance 11

Risk Management 13

Organizations Covered

SUMCO Corporation and its Group companies.

Offices Plants

Network in Japan

Offices

Plants

Overseas Network

Technical support

Environmental Report

"SUMCO" and "the Company" as used in this report refers to SUMCO Corporation. The Financial Highlights

Major subsidiaries Chitose

(wafers)

Nagasaki

SUMCO TECHXIV Corp.

SUMCO Phoenix Corporation

Environmental Management 15

Environmental Impact of Business Activities 17

cover SUMCO Corporation and its consolidated subsidiaries. Other performance data outside the above

(ingots, wafers)

Imari

(ingots, wafers)

Akita JSQ Division (quartz crucibles)

Yonezawa

SUMCO Shanghai Corporation

SUMCO

Europe Sales Plc.

SUMCO

Korea Corporation

SUMCO Phoenix

SUMCO

Phoenix

Combating Global Warming 19

scope are noted as such.

Japan Formosa SUMCO Technology

(ingots)

Noda

SUMCO Technology

Corporation

(ingots, wafers)

Corporation

(wafers)

Reduction of Waste 20 Effective Use of Water Resources 20 Chemical Substance Management 21

Publication

May 2017

(Planned publication of the next issue: May 2018)

Corporation

(ingots)

Fukuoka

Saga

(ingots, wafers)

Miyazaki

Osaka

Corp.

(wafers)

Tokyo Head Of ce

PT. SUMCO Indonesia

(wafers)

SUMCO Taiwan Technology Corporation

FORMOSA SUMCO TECHNOLOGY CORPORATION

(ingots, wafers)

SUMCO Singapore Pte. Ltd.

Environmental Impact (SUMCO Phoenix Corporation) 22

Social Activities Report

Note Regarding Forward-Looking Statements

Projections, predictions, prospects, and other forward-looking statements contained in this report

SUMCO TECHXIV Corp.

(ingots, wafers)

Net sales (consolidated)

Financial Highlights

Operating income (consolidated)

Net income/loss attributable to owners of the parent company (consolidated)

are made by the Company based on the information	4,000	500	500
Interaction with Suppliers	25	available at the time of the release of the statements	3,000	400	400

Interaction with Customers 23

(100 million yen) (100 million yen)

(100 million yen)

Interaction with Shareholders and Investors 27

Interaction with Local Communities 28

and therefore are subject to risks and uncertainties. Due to various factors, actual results may vary significantly from results anticipated in the

2,000

1,000

2,066 1,851

2,253

2,368

2,113

300

200

100

132

178

256

294

140

300

200

100 34

162

7

197

65

Interaction with Employees 31

forward-looking statements.

0

Jan.

2013

Dec. 2013

Dec. 2014

Dec. 2015

Dec. (FY) 2016

0

Jan.

2013

Dec. 2013

Dec. 2014

Dec. 2015

Dec. 2016

(FY)

0

Jan.

2013

Dec. 2013

Dec. 2014

Dec. 2015

Dec. 2016

(FY)

Site Data 35

No. of employees (consolidated)

(employees)

10,000

Sales composition by region (year ended December 2016)

Europe, etc.

※ 2013年12月期は2013年2月から2013年12月までの 11ヶ月間

8,000

6,000

4,000

2,000

0

7,879 7,277

7,396 7,480 7,520

8.0%

Asia

53.3%

Japan

25.4%

North America

13.3%

Jan.

2013

Dec.

2013

Dec.

2014

Dec.

2015

Dec. (FY)

2016

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Business of the SUMCO Group

SUMCO-Supporting Your Everyday Life

Business of the SUMCO Group

In daily life, we hardly ever see a silicon wafer, but they are used in every sort of electronic device and are indispensable in our lives.

All sorts of technological innovations have enabled the evolutionary development of electronic devices, which have added immeasurably to our lives and greatly facilitated cultural progress.

Some products have consequentially become smaller, and others larger; some lighter, some stronger, some faster.

Engineers are carrying on the battles of their predecessors and are going beyond the achievements of those persons, creating revolutionary change. The continued evolution of the silicon wafer is a precondition for taking up this battle.

SUMCO sees itself as being engaged in this battle, as a corporation dedicated to contributing to all sorts of technological innovation on behalf of the advancement of society and the development of humanity.

Image Sensors

Image sensors serve as the "eye" for capturing still and video images. The silicon wafers used in these semiconductor devices capable of sensing images are demanded extremely high levels of quality in order to limit the "noise" generated when capturing imagery under low- light conditions.

Telecommunications Equipments

Large numbers of cutting-edge semiconductors are used in telecommunications equipments, including logic chips to run various applications, e-mail, internet browsing, sensors for taking photographs, and memory to store photographs and other data. Every year the functions of these semiconductors become more sophisticated, and they are made using SUMCO silicon wafers.

Automotive Semiconductors

Numerous semiconductor devices are already at work inside motor vehicles.

Extremely high reliability is expected for driver assistance systems such as automatic driving, automatic braking, and lane keeping assist, and the level of quality demanded for silicon wafers is also severe as it is the key factor in the stable operation of semiconductor devices.

Power Semiconductors

Devices called power semiconductors are used to control electric power. These are technically complex devices, making this a specialized field. Power supply control for heavy electric machinery, in particular, such as electric trains that use power of over 1000 V, requires special know-how for the silicon wafers, as well.

Manufacturing Silicon Wafers

Four Quality Requirements for Silicon Wafers

Smelting and Refining

Monocrystalline Silicon Ingot Manufacture

Slicing

Circuit Pattern Lithography

Dicing

Packaging

Assembly

There are mainly four quality requirements for silicon wafers as described below. A silicon wafer is an agglomeration of various advanced technologies and its production requires extensive expertise. Sharing of information across the team and accumulation of techniques are therefore essential.

SilicaPolycrystalline

Monocrystalline

Silicon Wafer Semiconductor

Semiconductor

Electronic

Silicon

Silicon Ingot

Patterned Wafer

Chip

Device

Product

Crystal Perfection

Flatness

Cleanliness and Elimination of Contamination

Monocrystalline Silicon Ingot Manufacturing Processes Wafer Processes

Monocrystalline Silicon Block

Silicon wafers used for semiconductor devices are made from monocrystalline silicon. The number of silicon atoms contained in a piece of 300-mm wafer can be as high as 3×1024. The word

As semiconductor circuits are becoming increasingly miniaturized, silicon wafers are required to be extremely flat and smooth. To illustrate this concept, if we enlarged a 300-mm wafer to the size of 300 meters (making it as big as Tokyo Dome), the quality requirement would be equivalent to permitting an unevenness of only 0.1 mm or less

The number of minute particles adhering to the surface of silicon wafers is required to be as close to zero as possible. To illustrate the concept, if we enlarged a 300-mm wafer to the size of 300 meters (making it as big as the Tokyo Dome), the quality requirement is equivalent to permitting a maximum of only 10 grains of sand, each with a diameter of 0.04 mm, across the entire area. Wafers used for image sensors of digital cameras are required to be ultra-pure, at the level of no more than one part per

Polycrystalline Silicon

Melting Seeding Pulling Monocrystalline

Silicon Ingot

Slicing Lapping Polishing Wafer Washing Polished Wafer

"monocrystalline," meanwhile, means the state in which the

silicon atoms are arranged in

across the entire area.

quadrillion.

300 mm Approx. 300 m

The production of silicon wafers is divided into two processes: the monocrystalline silicon process and the wafer process. In the monocrystalline

silicon process, polycrystalline silicon is melted to produce monocrystalline silicon ingots. In the wafer process, these monocrystalline silicon ingots are sliced into wafers, which are then polished and cleaned to create a flat, mirror-like surface.

an orderly, crystalline structure, both horizontally and vertically.

Approx. 300 m

300 mm Silicon Wafer

Unevenness of

0.1 mm or less

Silicon Wafer

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