A single-cell-gap transflective liquid crystal display with a vertically aligned cell

ABSTRACT

A single-cell-gap transflective liquid crystal display with a vertically aligned cell using square ring electrode is demonstrated. The top substrate has a top planar common electrode, a square ring pixel electrode is coated on the bottom substrate, while a bumpy reflector is coated under the bottom substrate. In this device, the planar common electrode and square ring pixel electrode generate a strong longitudinal electric field in the transmissive region (T region) and a weak fringe field in the reflective region (R region). As result, the T and R regions accumulate the same optical phase retardation. The simulation results show that the display exhibits reasonably low operating voltage, high transmittance and well-matched voltage-dependent transmittance and reflectance curves. Besides, fabrication process of the transflective liquid crystal display is very simple.

Graphical Abstract

KEYWORDS:

• Vertically aligned cell
• transflective liquid crystal display
• square ring electrode
• single-cell-gap
• negative dielectric anisotropy

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The work is supported by the National Natural Science Foundation of China under Grant No. 61535007 and the Equipment Research Program in Advance of China under Grant No. JZX2017-1570/Y464.