Abstract
A novel structure using dielectric separation and local electric
field enhancement is proposed to reduce the fringing field effect
of high-resolution spatial light modulators (SLMs). In our configuration,
photoreactive wall structures are used to suppress the crosslink effect
of liquid crystal (LC) molecules between adjacent pixels, and slit-step
electrodes can enhance the local electric field, which compensate
the disclination caused by the split of fringing electric field. The
phase modulation of conventional and novel configurations were simulated,
and the effect of LC alignment azimuthal angle was analyzed. The results
show that the phase modulation characteristics are greatly improved,
which indicates the proposed configuration can suppress the annoying
interpixel coupling of SLM sufficiently.
© 2014 IEEE
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