Fabrication of focus-tunable liquid crystal microlens array with spherical electrode

In this thesis, the fabrication of the liquid crystal microlens array with spherical electrode is demonstrated. The fabrication process is divided in two parts: microlens array and liquid crystal cell sealing. In the process of microlens array, the hydrophilic confinement effect, an inkjet printer, and the replication process is used to fabricate microlens array on glass substrate. PEDOT:PSS is spin-coated on the microlens array as a curved electrode and flatten by SU-8 photoresist. Then we assemble it with another ITO glass to form the liquid crystal microlens array. The interference patterns of the LC microlens array is measured and it is in a good agreement with the theoretically calculation. From the interference rings, the optical focusing power range is from -47.28 to -331 diopter under 10 volts. This device can be potentially used for the optical zoom system or focus-tunable lens applications.