A planarization tape and a touch sensor assembly including a cover glass, a touch sensor film bonded to the cover glass through an optically clear adhesive layer and the planarization tape releasablybonded to the touch sensor film is described. The planarization tape includes a polymeric substrate and a releasable adhesive layer bonded to the substrate. The substrate has a thickness between 250 micrometers and 5 mm, and the adhesive layer has a thickness between 5 micrometers and 100 micrometers. The adhesive layer may be adapted to releaseably bond to at least one of glass and cyclic olefinpolymer film