TOKYO OHKA KOGYO CO., LTD. (TOK) provides chemical products, such as photoresist, and equipment for semiconductors and displays.

HOME Products


TOK expanding business domains, based on
microprocessing technology making use of photolithography.


Photolithography Technology

Photolithography technology is TOK's core technology used in semiconductors and Liquid Crystal Displays.

Business Fields

Semiconductor Manufacturing Field

Microprocess technology, such as photoresist, is supporting advancement in the electronics field.

Semiconductor Packaging and MEMS Manufacturing Field

TOK's unique packaging / MEMS manufacturing technologies widely support the manufacturing of more compact electronics.

3D-Packaging Field

Proposing a new semiconductor manufacturing technology, i.e., multi-layer stacking.

Panel Manufacturing Field

Providing the products and the optimal solutions for many kinds of Panel manufacturing.

New Business Field

Offering high-value-added products for new business field, such as solar panels and nanoimprint-related materials.

Support to Venture Businesses

TOK will actively support promising venture businesses that can be expected to generate technological synergies with us.

HOME Products