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Masakazu Tokura
Director & Senior Managing Executive Officer responsible for IT-related Chemicals Sector |
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Sumikalight
retardation film |
| Sumitomo
Chemical's Sumikalight retardation film is used for LCDs
to turn the obscure blue-and-yellow contrast of STN-type
LCDs into a sharp black-and-white contrast. Since the launch
of color STN-type LCDs, Sumikalight has gained broad market
acceptance because its homogeneous optical properties enable
the distinct black-and-white contrast needed as the base
for color display. We have further developed special grades
of Sumikalight that widen the viewing angle of STN-type
and TFT-type LCDs. These products, which are based on our
proprietary technologies, help control the refractive index
of the film in three-dimensional directions. |
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Color filters |
| Color filters are the components in a liquid crystal display (LCD) that translate light into color images. Of the many manufacturing methods available, Sumitomo Chemical uses a pigment dispersion method that is superior for, among other qualities, its optimal productivity and superior color characteristics. In the rapidly developing field of advanced LCD technology, the company has developed various types of color filters that answer to a wide variety of needs, such as the VA (Vertical Alignment) type and the IPS (In Plate Switching) type, which allow wide viewing angles, in addition to TN (Twist Nematic) type color filters. These materials serve such a diverse range of applications as displays for notebook PCs, monitors, small- and medium-size mobile phones, digital still cameras, and portable DVD players.
By supplementing its accumulated technological capabilities and quality assurance system with new production technologies and innovative performance-boosting elemental technologies developed in tandem with environmental management systems, Sumitomo Chemical will continue to leverage its strengths to supply its customers with high-performance, high-quality color filters. |
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Sputtering targets |
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We use our proprietary
crystal control technology to manufacture aluminum alloy
targets and titanium targets of superior quality and
reliability. The targets are then supplied to our customers
worldwide as raw materials for electrodes and electric
wiring for integrated circuits. |
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Supral
super-high-purity aluminum |
| Our Supral
aluminum boasts an ultra-high purity level of 99.999% or
higher. It is used as wiring material for integrated circuits
or as conductive material to stabilize electric transmissions
under super-conductivity. |
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ELECTRONIC
MATERIALS |
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Sumikasuper liquid crystal polymer |
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Sumikasuper liquid
crystal polymer, a super engineering
plastic developed by Sumitomo Chemical, has outstanding
thin-wall fluidity, a maximum soldering temperature
of 350°C, and long-term heat resistance at temperatures
of 220 to 260°C. Demand for Sumikasuper has seen
steady growth for such applications as coil bobbins,
relays, switches and volumes. |
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Sumikaexcel polyether sulfone |
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We started the
production of Sumikaexcel polyether sulfone (PES) at
our Ehime Works in 1994 under a license from Imperial
Chemical Industries plc. PES is known for its well-balanced
physical properties, such as superb water resistance,
dimensional stability, and long-term heat resistance
at temperatures of 180 to 200°C. This product will
be used increasingly in various electronic components,
automotive parts, medical equipment, and aerospace assemblies. |
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Sumiploy
composite molding materials |
| Sumiploy
composite molding materials are made of various high-performance
polymers developed by Sumitomo Chemical. Characterized by
excellent heat and abrasion resistance and superior mechanical
strength, Sumiploy is used extensively in parts and assemblies
for data-processing equipment, automobile engines and industrial
robots. |
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BATTERY MATERIALS |
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Separator for Lithium-ion Secondary Batteries |
| Lithium-ion secondary batteries are increasing being used to improve the functionality and portability of mobile phones, notebook computers and other small electronic devices, and in addition, are expected to find applications as power sources for automobiles.
Sumitomo Chemical's proprietary separator developed in-house, is composed of a polyolefin substrate with an aramid layer, making it highly heat-resistant and improving the reliability of lithium-ion secondary batteries.
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Related Plants and Laboratories |
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Ohe Works |
 Ohe Works
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In April 2009, the Ohe plant was established as a manufacturing and assembly plant in the Ohe district of our Ehime Works, where we have been producing optical functional films and color filters. The Ohe plant has worked to build the manufacturing and technological capabilities and also gather the talent and technology ideally suited for the field of manufacturing and assembly in order to strengthen the competitiveness of our existing businesses and enter new business fields to support the further development and growth of manufacturing and assembly business of Sumitomo Chemical and the Sumitomo Chemical Group.
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Product Information |
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Sumikalan polarizing film/ Sumikalight retardation film/ Separator for Lithium-ion Secondary Batteries/ |
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Ehime Works (to introductory page of Basic Chemicals Sector) |
Chiba Works (to introductory page of Petrochemicals & Plastics Sector) |
Osaka Works (to introductory page of Specialty Chemicals Sector )
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IT-related Chemicals Research Laboratory |
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This Laboratory was created out of the former Specialty Chemicals Research Laboratory to provide highly functional chemicals to the worldwide IT industry.
R&D initiatives ranging from basic research through product development are being undertaken here for semiconductor process materials such as photoresist and wet chemicals; liquid crystalline display (LCD) materials; semiconductor encapsulating resins; and super engineering plastics for electronic parts.
Closely coordinated with the Division and its associated plants, the Lab is determined to contribute to the development of IT/electronic industries by supplying new and advanced products that meet users’ needs.
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Major
Affiliated Companies |
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Dongwoo Fine-Chem Co., Ltd. |
| Dongwoo Fine-Chem Co., Ltd. is engaged in the production and sales of polarizing film and color filters in Korea, where production of LCD panels, for which these are the main materials, is expanding rapidly. The company also produces and sells high-purity electronics chemicals and photoresists used in production processes for semiconductors and LCD panels. In addition, Dongwoo Fine-Chem prides itself in having the world's largest-scale liquid etching chemical business and the most advanced technology available, and has gained renown among its customers for its commercialization of a wide variety of specialty chemicals. The company is expanding its functions as a base of Sumitomo Chemical's IT-related Chemicals sector for production, R&D, logistics and sales in Korea, serving all of Asia. Furthermore, the company also operates a large-scale research laboratory that conducts R&D on IT-related chemical products, allowing it to contribute through its research to providing high-quality materials for Korea's IT-related manufacturing industry.
In recent years, Dongwoo Fine-Chem has grown into a total chemical solutions company, handling a broad range of such diverse products as organic compounds for paper and plastics, insecticides, and feed additives. |
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