A Transflective LCD Having a Patterned Retardation Layer for a Single Driving Scheme

Abstract

We have developed a new transflective liquid crystal (LC) display with a single cell gap and a low twisted nematic (LTN) mode configuration. In order to obtain a single cell gap and a single LC mode, we make a patterned retardation layer having both the homeotropic and planar alignment in this display mode. The patterned retardation layer was made of a photo-polymerizable liquid crystalline material by applying single step patterning of a photo-masking technique. The electro-optic characteristics of the transmissive and reflective parts were nearly identical and thus a single driving scheme can be used.

Keywords:

• liquid crystal (LC)
• liquid crystal display (LCD)
• low twisted nematic (LTN)
• patterned retardation layer
• photoalignment
• transflective LCD

Acknowledgments

This work was supported by Samsung SDI – Seoul National University Display Innovation Program.