Two-dimensional blue phase liquid crystal microlens array with low driving voltage and polarization independence

ABSTRACT

A polarisation-independent and low-voltage-driven two-dimensional blue phase liquid crystal (BPLC) microlens array is proposed. The pixel electrode of the microlens array is composed of planar hole-patterned electrode and square electrode. Combined with composite dielectric layer and planar common electrode, a two-dimensional microlens array is realised. When the same driving voltage is applied to the hole-patterned electrode and square electrode, the longitudinal electric field with gradient distribution will be generated in the BPLC layer, which facilitates the polarisation-independent properties of the microlens array. At the same time, the dielectric layer with high dielectric coefficient used in the microlens array helps to achieve its low driving voltage. Additionally, this design has the advantages of ideal phase profile, fast response time and easy manufacturing process.

ABSTRACT

KEYWORDS:

• Blue phase liquid crystal
• microlens array
• low driving voltage
• polarisation independence

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the National Natural Science Foundation of China under Grant No. 62105012.