fig1 and 2 depict a collapsible trade show display 10 , known in the industry as a pop - up display . display 10 includes a frame assembly 12 . frame assembly 12 includes an expandable frame 14 , comprised of a plurality of support rods 13 pivotally attached to a plurality of hubs 15 and having a front 16 and opposed left and right ends 18 , 20 . in one embodiment , frame 14 is comprised of a lightweight yet durable material such as fiberglass . a plurality of vertical channels 22 are connected to front 16 and ends 18 , 20 of frame . an example of such a frame is disclosed in u . s . pat . no . 6 , 829 , 869 , the content of which is incorporated herein by reference . referring to fig2 , a plurality of flexible front panels 24 can be attached to display 10 at front 16 of frame 14 . in one embodiment , magnetic strips disposed on a rear side of front panels 24 can mate with a magnetic material comprising or attached to channels 22 . outer surfaces 26 of front panels 24 can comprise graphics promoting a company , product , service , etc . front panels 24 can connect to display 10 such that there is a smooth , seamless transition between panels 24 . display 10 further includes a pair of curved end panels 100 located at each end 18 , 20 of display 10 . end panels 100 are more clearly depicted with reference to fig3 a - 3b , 7 , 8 , and 9 . end panels 100 can be comprised of an elongate , resilient panelar material having a generally rectangular shape including a body 101 and a top margin 102 , bottom margin 104 , and a pair of side margins 106 . margins 102 , 104 , 106 can be integral with body 101 or can be distinct pieces affixed to body with adhesives or the like . in one embodiment , side margins 106 are comprised of a strip 107 of flexible magnetic material affixed to a flexible , non - magnetic body 108 . graphic layer 109 is similarly adhered to the body 108 . the body may comprise polycarbonate sheet material 0 . 015 to 0 . 030 inches thick . or suitably in the range of 0 . 020 to 0 . 025 inches thick , or suitably about 0 . 020 inches plus or minus 20 %. end panels 100 also include an inner surface 110 and an outer surface 112 . outer surfaces 112 of end panels 100 can include graphics 119 that cooperate with the graphics 119 . 1 on outer surfaces 26 of front panels 24 . end panels 100 can also include notches 108 at outer edges of top margin 102 which can hook on nubs 28 on the framework . as can be seen in fig3 a , end panels 100 can naturally retain a generally flat configuration . end panels 100 can be brought into a curved configuration with bridge portions 114 , 116 . referring to fig7 , 8 , 9 , and 10 , bridge portions 114 , 116 forming bridging 115 , can comprise a sheet or fabric material and can be affixed to end panels 100 at side margins 106 by any known means , such as , for example , stitching 111 or adhesives . the bridge portions can suitable be stitched directly to the magnetic strip 107 and adhered by adhesives to the body 101 . bridge portions 114 , 116 include cooperating connecting means 118 , 120 . in one embodiment , connecting means 118 , 120 comprise a zipper . in other embodiments , connecting means 118 , 120 can comprise any other means for removably connecting bridge portions comprised of a fabric or sheet material , such as , for example , buttons or hooks , see fig1 , 17 , 18 , and 19 . fig1 illustrates bridge portions 114 . 1 , 116 . 1 with eyelets 130 and a drawstring 131 . fig1 illustrates bridge portions 114 . 2 , 116 . 2 with hooks 134 attachable to catches 135 . fig1 illustrates bridge portions 114 . 3 , 116 . 3 with an attachment portion 137 and tabs 138 utilizing hook and loop cooperating material 139 , 139 . 1 . fig1 illustrates bridge portions 114 . 4 , 116 . 4 with buttons 141 and button holes 141 . 1 referring now to fig3 b , end panels 100 can be given a curved configuration by pulling connecting means 118 , 120 together and connecting them . once connecting means 118 , 120 are fully connected , as shown in fig3 c , end panels 100 retain the desired curved configuration . bridging with connecting means 118 , 120 hold end panels 100 firmly in the curved configuration , which provides for easy installation onto displays and eliminates the “ dramatic disengagement ” that occurs with previous designs . the amount of curvature can be varied by varying the length of bridge portions 114 , 116 . the amount of curvature for a single end panel 100 can be varied by including an additional bridge portion 121 , see fig1 and 13 . the additional bridge portion can be a strip of fabric or sheet material that can be connected to one of the existing bridge portions , for example bridge portion 114 , by an additional connecting means , for example a zipper to form the bridging 115 . this effectively lengthens bridge portion 114 , so that when it is connected to bridge portion 116 , end panel 110 has less curvature . in a situation where two pop - up frameworks 12 . 1 , 12 . 2 are positioned adjacent one another as illustrated in fig1 , the curved panel is a central curved panel attached to two different framework assemblies , providing a gull - wing shaped double pop - up display . thus , a single end panel can be given any number of different curvatures , depending on whether an additional bridge portion is used and the length of the additional bridge portion . in some embodiments , temporary hooks or straps may be utilized to provide an initial curvature at one or both ends of the curved end panel prior to making the lengthwise connection . the connection of end panels 100 to frame assembly 12 can be seen with reference to fig4 a - 4c . after connecting means 118 , 120 have been connected to give the desired curvature to end panel 100 , notches 108 in top margin 102 of end panel 100 can be hooked over rivets 28 on channels 22 of frame assembly 12 as indicated by the arrows a in fig4 a . in other embodiments , notches 108 can connect to any other portion of frame assembly 112 and notches 22 themselves can comprise any other means for connecting end panel 100 to frame assembly 12 , such as , for example , hooks or snaps . once the upper end of end panel 100 is connected , as shown in fig4 b , the bottom end can be swung inwardly and engaged with channels 22 of frame assembly 12 . end panel 100 can be held in place on frame assembly 12 by aligning magnets in top 102 , bottom 104 , and / or side margins 106 with magnetic channels 22 . alternatively , end panel can be held on frame assembly 12 by any other means , such as , for example , additional notches , hooks , or snaps . fig4 c depicts a partial view showing the top and bottom of end panel 100 in proper position on frame assembly 112 . as noted above , because the curvature of end panels 100 is maintained by connection means 118 , 120 , attachment of the end panels 100 to the frame assembly 12 is easier and simpler and the chance of a “ dramatic disengagement ” of end panels of the prior art is eliminated . existing tradeshow displays can also be modified to provide the advantages of the present invention . in particular , end panels can be modified to utilize continuous or multiple attachment points to pre - curve the panels before hanging on the framework . when end panel 100 is disconnected from frame assembly 12 and connection means 118 , 120 are disengaged , end panels 100 naturally lie flat and can be easily stored for later use . because end panels 100 comprise a flexible material , they can be rolled into a generally cylindrical shape as shown in fig5 . preferably , end panels 100 are rolled with graphical outer surface 112 facing outwardly and inner surface 110 facing inwardly . end panels 100 can then be stored in a transport case 150 for storage and / or transport as can be seen in fig6 . referring to fig7 , 9 , and 10 , the bridging portions 114 . 6 , 116 . 6 may provide a suitable support for internal back lighting of the pop - up display . the fabric of one or both or three bridging portions may have a strip 160 of one of hook and loop material with a light strip 162 having the other of the hook and loop material 164 . a zipper 168 may connect the two bridging portions . referring to fig1 and 15 , an embodiment of the invention is illustrated wherein the bridging portions 14 . 7 , 16 . 7 are attached to the resilient panel 100 . 1 at a vertical strip region displaced from the margins . moreover , several such panels , in dashed lines , each with disconnectable bridging 172 , 173 , may be secured together utilizing magnetic strips or hook and loop material on the respective vertical margins 181 , 182 to provide a self supporting display without the necessity of an internal framework . the embodiments above are intended to be illustrative and not limiting . additional embodiments are within the claims . although described with reference to particular embodiments , those skilled in the art will recognize that changes can be made in form and detail . any incorporation by reference of documents above is limited such that no subject matter is incorporated that is contrary to the explicit disclosure herein .