Pattern electrode structure for electrowetting apparatus

A pattern electrode structure for an electrowetting apparatus, which is laminated between a base material and a dielectric layer of the electrowetting apparatus, the pattern electrode structure comprising:

• a first electrode portion formed on the base material of the pattern electrode structure and including a first electrode connection portion, a first basal pattern electrode connected to the first electrode connection portion, and a plurality of first upper branch electrodes connected to the first basal pattern electrode;
• and
• a second electrode portion formed on the base material of the pattern electrode structure and including a second electrode connection portion, a second basal pattern electrode connected to the second electrode connection portion, and a plurality of second upper branch electrodes connected to the second basal pattern electrode, the second electrode portion having a different polarity from the first electrode portion,
• wherein the second basal pattern electrode extends across a central region of a plane of the pattern electrode structure in a width direction of the pattern electrode structure,
• and wherein the first electrode portion further includes a plurality of first lower branch electrodes, the second electrode portion further includes a plurality of second lower branch electrodes, and the plurality of first and the plurality of second lower branch electrodes are formed in a lower region defined by the second basal pattern electrode, provided in a vertical direction of the pattern electrode structure, and alternately provided in parallel with one another in a horizontal direction of the pattern electrode structure.