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Liquid crystal display panel manufacturing method

  • US 6,023,313 A
  • Filed: 08/18/1997
  • Issued: 02/08/2000
  • Est. Priority Date: 08/21/1996
  • Status: Expired due to Term
First Claim
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1. 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.

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