Self alignment of substrates by magnetic alignment

A method of aligning a pair of substrates during assembly/fabrication of a liquid crystal display panel, said method comprising the steps of:

• a) depositing a plurality of magnetic field-generating elements at selected locations on a first surface of a first substrate,
• b) depositing a plurality of magnetic field-detecting elements on a second surface of a second substrate at locations corresponding to said selected locations,
• c) depositing a sealant around the outside border of a liquid crystal display area,
• d) joining the substrates together into approximate alignment of said first substrate with said second substrate to permit a field interaction between corresponding field-generating and field-detecting elements to complete alignment between said first substrate and said second substrate so that the first surface face the second surface;
• and
• wherein the magnetic field-generating and magnetic field-detecting elements are located outside the liquid crystal display area.

A method of aligning a pair of substrates during assembly of a liquid crystal display panel comprising the steps of,

• a) depositing a plurality of field-generating elements composed of a magnetically permeable material at selected locations on a first surface of a first substrate,
• b) depositing a plurality of magnetic field-detecting elements on a second surface of a second substrate at locations corresponding to said selected locations,
• c) joining the substrates together into approximate alignment of the first substrate with the second substrate,
• d) depositing a selected quantity of liquid crystal material in a central region of one of the first surface and the second surface,
• e) applying an external magnetic field to generate an energy gradient so as to displace and rotate the first and second substrates until the two substrates align precisely,
• wherein the magnetic field-generating and magnetic field-detecting elements are located outside the central region.