Exhibit 21

Subsidiaries of Pixelworks, Inc.

Equator Technologies, Inc. — a Delaware corporation

ViXS USA, Inc. – a Delaware corporation

Pixelworks Semiconductor Technology (Shanghai) Co. Ltd. — a China company

Pixelworks Japan Inc. — a Japan company

Pixelworks Semiconductor Technology (Taiwan) Inc. — a Taiwan company

Pixelworks Semiconductor Technology (Shanghai) Co. Ltd. Shenzhen Branch Office No. 1 – a China company

Pixelworks Hong Kong Limited (Hong Kong) – a Hong Kong company

Pixelworks Semiconductor Technology California LLC (California) – a California company

ViXS Systems Inc. dba Pixelworks Canada (Canada) – a Canadian company