3D image display, aligning system and method thereof

An aligning method for a 3D image display device comprising:

• forming a plurality of display panel align marks at a circumference of a display panel showing a left eye image and a right eye image;
• forming a plurality of 3D filter align marks stacking with a retarder pattern and a reflection plate on a circumference of a 3D filter including a transparent substrate and a first retarder converting a light from the left eye image into a first polarized light and a light from the right eye image into a second polarized light on the transparent substrate, wherein the plurality of 3D filter align marks have the retarder pattern formed on the transparent substrate and the reflection plate formed on the retarder pattern;
• and
• taking a picture of the display panel align marks and the 3D filter align marks.

A 3D image display device comprising:

• a display panel displaying a left eye image and a right eye image, and having a plurality of display panel align marks at a circumference of the display panel;
• a 3D filter including a transparent substrate, a first retarder disposed on the transparent substrate for converting the left eye image into a first polarized light and the right eye image into a second polarized light, and a plurality of 3D filter align marks disposed at a circumference of the transparent substrate;
• and
• wherein the plurality of 3D filter align marks have a retarder pattern formed on the transparent substrate and a reflection plate formed on the retarder pattern.