Reduction of gamma distortions in liquid crystal display by anisotropic voltage-dividing layer of reactive mesogens

ABSTRACT

We demonstrate a new concept of reducing the off-axis gamma distortions in a liquid crystal display by the formation of an anisotropic voltage-dividing layer (AVDL) on the alignment layer. The AVDL was prepared using reactive mesogens (RMs) by simple spin-coating, followed by the photo-polymerisation under the exposure of ultraviolet light (UV) through a photomask and the removal of residual RMs. The UV exposure time for the photo-polymerisation was found to be critical for the uniform alignment of the liquid crystal molecules on the AVDL. Owing to the capacitance difference between the sub-domains produced by the AVDL, the threshold voltage shift was naturally appeared in sub-domain by domain so that the reduction of the gamma distortions in the off-axis was achieved in a simple way.

GRAPHICAL ABSTRACT

KEYWORDS:

• Liquid crystal
• liquid crystal display
• reactive mesogen
• vertical alignment mode
• gamma distortion
• anisotropic voltage-dividing layer

Acknowledgments

This work was supported in part by the Samsung Display Co. Ltd and the Ministry of Education of Korea through the Brain Korea 21 Plus Project in 2016.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was funded by Samsung and the Ministry of Education.