Patent ID: 8558985
Filing Date: 2013-10-15
Classification: G02F

Abstract:
1. A tunable liquid crystal optical device defining an optical aperture and having a layered structure, said device comprising: a film electrode formed on a surface of a first substrate and covered by a second substrate; a contact structure filling a volume within said layered structure and contacting said film electrode, said contact structure being located outside of said optical aperture and providing an electrical connection surface much larger than a thickness of said film electrode; and a peripheral edge surface with exposed edges of layers of said layered structure, said contact structure being located at an edge of said device, wherein said film electrode is a first film electrode, said device further comprising a second film electrode formed on a substrate other than said first substrate, said contact structure including a first contact area contacting said first film electrode and a second contact area contacting said second film electrode, and wherein said device is essentially square and said first and second contact areas of said contact structure are located in diagonally opposed corners of said device.