Liquid crystal display device comprising first and second pixel electrodes that overlap each other with an insulating layer interposed therebetween

Patent metadata

Field	Value
Publication number	US-9057918-B2
Application number	US-201113015183-A
Country	US
Kind code	B2
Filing date	Jan 27, 2011
Priority date	Feb 5, 2010
Publication date	Jun 16, 2015
Grant date	Jun 16, 2015

Abstract

In a reflective liquid crystal display device, a space where a pixel electrode is not provided between adjacent pixels causes a decrease in proportion of a display region in a pixel (i.e., aperture ratio). As a result, the reflective liquid crystal display device has a problem in that contrast and luminance of display images are decreased. An object is to provide a liquid crystal display device which displays an image with high contrast and high luminance. In the liquid crystal display device, an end portion of a pixel electrode is provided to overlap with an end portion of an adjacent pixel electrode with an insulating layer interposed therebetween so that a space between adjacent pixels is narrowed; thus, the proportion of a display region in a pixel is increased.

First claim

The invention claimed is:

1. A liquid crystal display device comprising:
a substrate;
a first switching element over the substrate;
a second switching element over the substrate;
a first insulating layer over the first switching element and the second switching element;
a first pixel electrode over the first insulating layer, the first pixel electrode being electrically connected to the first switching element;
a second insulating layer over the first pixel electrode;…

Assignees

• Yamazaki Shunpei
• Semiconductor Energy Lab

Inventors

• Yamazaki Shunpei

Classifications

• G02F1/13439 Primary

  Physics · mapped topic

• G02F1/136227 Primary

  Physics · mapped topic

• G02F1/134309 Primary

  Physics · mapped topic

• G02F1/133345

  Physics · mapped topic

• G02F1/1368

  Physics · mapped topic