layer a border electrode made of metal and disposed on the planarization layer a glue layer disposed on the border electrode and having on its bottom surface at least one downward extruding portion for enhancing its adhesive strength and an electrophoretic display layer disposed on the top surface of the glue layer application_number US 201113100227 A description the present invention will be described in more detail hereinafter with reference to the accompanying drawings that show the preferred embodiment of the invention to enhance the adhesive effect of the glue layer so as to reduce the chance of mura defects occurring in the border regions of viewable area the present invention proposes a border structure for viewable area of electronic paper display in which a glue layer has on its bottom surface a plurality of downward extruding portions please refer to fig3 which illustrates a partial sectional view of a border structure for viewable area of electronic paper display according to a preferred embodiment of the present invention as can be seen in the figure the border structure for viewable area includes from top to bottom a protection sheet 200 a fpl 210 a border electrode 220 and a planarization layer 240 wherein the fpl 210 includes from bottom to top a glue layer 211 an electrophoretic display layer 212 an ito layer 213 and a pet layer 214.