Patent ID: 7705997

Claim:
A method of measuring topology of functional liquid in a pixel, in which functional liquid droplet is ejected from a functional liquid droplet ejection head on a substrate having a bank defining a pixel region to cause the functional liquid droplet to arrive in the pixel region, and at least one of thickness and volume of the functional liquid in the pixel arrived in the pixel region is measured by a surface topology measuring apparatus having an interferometer comprising: measuring surface topologies in which surface topology of the functional liquid in the pixel and surface topology of the bank are measured by the surface topology measuring apparatus, and measurement parameters regarding the surface topologies are generated; adding a bank height in which a height parameter corresponding to a height of the bank is added to the measurement parameter of a surface of the functional liquid in the pixel of the measurement parameter generated; and calculating topology in which at least one of thickness and volume of the functional liquid in the pixel is calculated based on the added measurement parameter of the surface of the functional liquid in the pixel and the measurement parameter of the surface of the bank.