Patent ID: 6150833
Filing Date: 2000-11-21
Classification: G01R,G02F,G09G

Abstract:
A method for testing an LCD panel in a power-up test by using an adjustable test fixture comprising the steps of:providing an adjustable fixture which includes a test fixture constructed by four side frames each having an L-shape, a first side frame comprising a first vertical portion and a first horizontal portion, said first horizontal portion having a base portion and a tip portion extending horizontally outwardly from a top of said first vertical portion, said base portion having a recessed slot for slidingly engaging a fourth side frame, said top portion being adapted for slidingly engaging a recessed slot in a second side frame, a second side frame comprising a second vertical portion of substantially the same height as said first vertical portion and a second horizontal portion, said second horizontal portion having a base portion and a tip portion extending horizontally outwardly from a top of said second vertical portion, said base portion having a recessed slot for slidingly engaging said first side frame, said tip portion being adapted for slidingly engaging a recessed slot in a third side frame, a third side frame comprising a third vertical portion of substantially the same height as said second vertical portion and a third horizontal portion, said third horizontal portion having a base portion and a tip portion extending horizontally outwardly from a top of said third vertical portion, said base portion having a recessed slot for slidingly engaging said second side frame, said tip portion being adapted for slidingly engaging a recessed slot in a fourth side frame, a fourth side frame comprising a fourth vertical portion of substantially the same height as said third vertical portion and a fourth horizontal portion, said fourth horizontal portion having a base portion and a tip portion extending horizontally outwardly from a top of said fourth vertical portion, said base portion having a recessed slot for slidingly engaging said third side frame, said tip portion being adapted for slidingly engaging a recessed slot in said first side frame, and each of said first, second, third and fourth horizontal portions having a substantially flat top surface equipped with a multiplicity of conductive elements for establishing electrical communication with a LCD panel to be tested, andpositioning an LCD panel on top of said adjustable fixture, said LCD panel having a multiplicity of conductive leads provided on at least one peripheral edge on at least one side of said panel for establishing electrical communication with said multiplicity of conductive elements on said side frame.