Multi-layer diffraction type polarizer and liquid crystal...

Details Multi-layer diffraction type polarizer and liquid crystal... Multi-layer diffraction type polarizer and liquid crystal...

2006-07-18

2006-07-18

Parker, Kenneth (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Interconnection of plural cells in series

C349S117000, C349S120000

Reexamination Certificate

active

07079202

ABSTRACT:
A liquid crystal element including a liquid crystal cell that has transparent substrates having electrodes and a liquid crystal layer sandwiched between the substrates, the liquid crystal cell having a retardation value for a linearly polarized light having a wavelength of λ incident and transmitting through the liquid crystal cell, the retardation value changing from R1to R2(R1>R2>0) when a first voltage V1applied between the electrodes is changed to a second voltage V2(V1≠V2). The liquid crystal element also includes a phase plate having a retardation value R for a linearly polarized light having the wavelength of λ, the retardation value R satisfying a relation R+Rv=m×λ (m: integer) with a retardation value Rvgenerated by a third voltage satisfying R1≧Rv≧R2.

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