Liquid crystal display panel manufacturing method

A method for assembling a liquid crystal panel display, comprising the steps of:

• providing an imaging system having an image pick-up device with a variable focus and a display device on which images from said image pick-up device are displayed;
• disposing a first substrate, having a display portion including a matrix of pixels and a first alignment mark, at an arbitrary distance from said image pick-up device;
• disposing a second substrate, having a second alignment mark, between said image pick-up device and said first substrate at a respective arbitrary distance from said image pick-up device and said first substrate;
• separately focusing said image pick-up device to a first focal length to obtain focused images of said first alignment mark and separately focusing said image pick-up device to a second focal length to obtain focused images of said second alignment mark;
• simultaneously displaying said focused images of said first alignment mark and said focused images of said second alignment mark on said display device;
• shifting at least one of said first substrate and said second substrate relatively so that at least a portion of said first alignment mark in at least one of said focused images of said first alignment mark coincides with at least a portion of said second alignment mark in at least one of said focused images of said second alignment mark;
• and
• laminating said first substrate and said second substrate together while maintaining a predetermined distance therebetween.