Photosensitive Materials Business

To the forefront of fine structure processing
by the world's only technologies

Photosensitive Materials Business

As the No.1 photoresist material manufacturer supporting the electronic society

In the mid 1970's, we focused on the semiconductor industry and started basic research on photosensitive compounds for photoresist used in semiconductor circuit formation. In 1981, we commercialized the positive-type photosensitive material (PAC) and the negative-type photosensitive material.
Furthermore, in response to the fine structure processing of semiconductors, since 1997 we have been producing and selling "photo acid generators (PAGs) for chemically amplified resists" and "polymers for chemically amplified resists". Also, in 2000, "Positive Photosensitive Materials (PAC)" began to be used in large quantities in the manufacture of panels for LCD TVs, expanding the field of business.
According to the increasing degree of integration of semiconductors, the fine structure processing to create smaller circuits will use shorter wavelength ArF immersion lithography, and further technological innovation will start the era of EUV exposure. We will continue to support the digitized future society as the No. 1 photoresist material manufacturer supporting the fine structure processing of semiconductors.

Everything leads to quality

The speed of the fine structure processing is increasing year by year, and the requirements of the market are asking for quality as well as speed and cost. Therefore, we are working on not only "high quality" of products but also "high quality" in all processes from development to sales.
Product development, raw material procurement, production process, analysis process, delivery, sales, and everyone involved. Including all of these, we position it as "value to provide to customers" and aim to be a company that grows with customers by providing this value proactively consistently from the first stage of customer development to the final stage of business.

Market for photosensitive material products

Market for photosensitive material products

Through semiconductors and panels, our products are used in a very wide range of fields, including LCD and OLED TVs, mobile phones, personal computers, LED lighting, VR devices, automobiles, digital signage ... In the future, the demand is expected to increase significantly due to the development of next-generation communication infrastructure and the further spread of electric vehicles, autonomous driving and IoT.

High purity ionic liquid and electrolyte

Toyo Gosei Co., Ltd. manufactures and provides stable and high-purity ionic liquids and electrolytes in clean and dry environments under the same management standards as photosensitive materials for semiconductors.
High-purity ionic liquids and electrolytes have been applied and studied in a variety of applications such as antistatic additives, reaction solvents, capacitors, Li-ion secondary batteries, and fuel cells.