Patent ID: 7982479
Filing Date: 2011-07-19
Classification: G09G

Abstract:
1. A method for inspecting defects of a display panel comprising a plurality of display cells wherein said display cells are filled with an electrophoretic fluid comprising charged pigment particles dispersed in a dielectric solvent, the method comprises the steps of: (a) providing a first pair of testing electrodes consisting of a first testing electrode and a second testing electrode, wherein the two testing electrodes (b) applying a voltage difference only to the first pair of testing electrodes during testing to allow a first portion of the display panel corresponding to the first testing electrode to display the color of the charged pigment particles and a second portion of the display panel corresponding to the second testing electrode to display the color of the dielectric solvent, (c) inspecting the display panel, and (d) during inspection, identifying defects by a color difference or an optical density difference between defective areas and non-defective areas among the first and second portions of the display panel.