Patent ID: 7160611
Filing Date: 2007-01-09
Classification: C09J,G02B,Y10T

Abstract:
1. A pressure sensitive adhesive optical film comprising: an optical film; and a pressure sensitive adhesive layer laminated on at least one surface of the optical film, said pressure sensitive adhesive layer having a modified surface opposite to the laminated surface, said modified surface comprising functional groups and/or segments chemically fixed thereto, said functional groups and/or segments having adhesive reactivity to a glass plate, wherein the pressure sensitive adhesive optical film satisfies: wherein P wherein the pressure sensitive adhesive optical film is characterized as having a shift distance in a creep test of no less than 100 μm as measured when the pressure sensitive adhesive layer is attached by an attachment area 10 mm ×10 mm to a glass plate, and a load of 4.9 N is applied to the glass plate in a shearing direction for 1 hour, and subsequently the shift distance of the pressure sensitive adhesive layer is measured, wherein said modified surface is obtained by an interfacial contact reaction between a surface modified material and a compound having a functional group, said surface modified material being selected from compounds including epoxy groups and including alkoxy silyl groups or silanol groups, said compound having a functional group being selected from compounds having primary or secondary amino groups, wherein said pressure sensitive adhesive layer comprises a pressure sensitive adhesive main layer and a reactive middle layer formed thereon, said reactive middle layer having said modified surface and containing said compound having a functional group.