PURPOSE: A display controller and a display system are provided to support a 3D image mode without adding a complicated circuit. CONSTITUTION: A blending coefficient storage unit(130) stores blending coefficients. An image mixing unit(110) receives left eye image data and right eye image data. The image mixing unit performs a blending operation of the left eye image data and the right eye image data using the blending coefficients stored in the blending coefficient storage unit. The image mixing unit generates 3D image data.
