Liquid crystal display device having dielectric film over and in contact with wall-like structures

Patent metadata

Field	Value
Publication number	US-8928846-B2
Application number	US-201113104221-A
Country	US
Kind code	B2
Filing date	May 10, 2011
Priority date	May 21, 2010
Publication date	Jan 6, 2015
Grant date	Jan 6, 2015

Abstract

An object is to provide a liquid crystal display device a driving voltage of which is reduced, which is formed using a liquid crystal material exhibiting a blue phase, and which enables higher contrast. In a liquid crystal display device including a liquid crystal layer exhibiting a blue phase, a first wall-like structure body is formed over a first electrode layer (pixel electrode layer), a second wall-like structure body is provided over a second electrode layer (common electrode layer), and a dielectric film covers them. The dielectric film is an insulator having a higher dielectric constant than the first wall-like structure body, the second wall-like structure body, and a liquid crystal material used for the liquid crystal layer, and is provided so as to protrude in the liquid crystal layer.

First claim

What is claimed is:

1. A liquid crystal display device comprising:
a first substrate;
an interlayer film over the first substrate;
a first electrode layer over the interlayer film;
a second electrode layer over the interlayer film;
a first wall-like structure body over the first electrode layer;
a second wall-like structure body over the second electrode layer;
a dielectric film in direct contact with a side surface of the first electrode layer, a side surface of the s…

Assignees

• Kubota Daisuke
• Yamashita Akio
• Ishitani Tetsuji
• Semiconductor Energy Lab

Inventors

• Kubota Daisuke
• Yamashita Akio
• Ishitani Tetsuji

Classifications

• G02F1/13394

  Physics · mapped topic

• G02F2001/13398

  Physics · mapped topic

• G02F1/134363 Primary

  Physics · mapped topic

• G02F2001/13793

  Physics · mapped topic

• G02F1/13793

  Physics · mapped topic