Transfer film for attaching protection film to flat panel display and method for manufacturing the flat panel display using the same

Abstract

The present disclosure relates to a transfer film for attaching protection film to flat panel display and method for manufacturing the flat panel display using the same. The present disclosure suggests a transfer film comprising: a lower film; and a protection film temporarily attached on the lower film and including a base film and an adhesion layer disposed on an upper surface of the base film. In the present disclosure, the flat panel display can be encapsulated using a transfer film having a protection film temporarily attached on a flexible lower film, so that it is possible to perfectly encapsulate the flat panel display with the protection film without any foreign material such as air bubble.

What is claimed is: 
     
         1 . A transfer film for attaching a film of a flat panel display, the transfer film comprising:
 a lower film; and   a protection film temporarily attached on the lower film and including a base film and an adhesion layer disposed on an upper surface of the base film.   
     
     
         2 . The transfer film according to  claim 1 , wherein the protection film further includes a relief film attached on an upper surface of the adhesion layer, and
 wherein the transfer film further comprises an upper film including a flexible relief base facing the relief film of the protection film and a strong adhesion layer disposed on a surface of the flexible relief base configured to attach with the relief film.   
     
     
         3 . The transfer film according to  claim 1 , wherein the lower film includes:
 a flexible transfer base; and   a weak adhesion layer disposed on a surface of the flexible transfer base configured to attach with the base film of the lower film.   
     
     
         4 . The transfer film according to  claim 1 , wherein the protection film is temporarily attached on the lower film in a manner that a plurality of unit protection films is disposed in a matrix array. 
     
     
         5 . The transfer film according to  claim 4 , wherein the each unit protection film comprises a unit upper film including:
 a unit flexible relief base facing the relief film of the each unit protection film; and   a unit strong adhesion layer disposed on a surface of the unit flexible relief base configured to attach with the relief film.   
     
     
         6 . A manufacturing method of a flat panel display, the method comprising:
 forming a display panel;   forming a transfer film including a protection film having a lower film, a base film temporarily attached on the lower film, and an adhesion layer disposed on an upper surface of the base film;   attaching the transfer film on an upper surface of the display panel by adhering the protection film on the display panel; and   removing the lower film of the transfer film to encapsulate the display panel by the protection film.   
     
     
         7 . The method according to  claim 6 , wherein the forming the transfer film includes:
 preparing the lower film having a flexible transfer base and a weak adhesion layer disposed on one side of the flexible transfer base;   preparing the protection film having the base film, the adhesion layer disposed on the upper surface of the base film, and a relief film disposed on the adhesion layer;   preparing an upper film having a flexible relief base and a strong adhesion layer disposed on one surface of the flexible relief base;   temporarily attaching the base film of the protection film on the weak adhesion layer of the lower film;   adhering the strong adhesion layer of the upper film on the relief film of the protection film;   selectively patterning the upper film and the protection film to have same size corresponding to the display panel; and   removing the upper film to peel off the relief film of the protection film.   
     
     
         8 . The method according to  claim 6 , wherein the attaching the transfer film on the upper surface of the display panel is conducted from one end side to the other end side by a roller. 
     
     
         9 . The method according to  claim 6 , further comprising:
 attaching a circular polarization film on the protection film; and   attaching a cover film on the display panel having the circular polarization film with an optical adhesive.   
     
     
         10 . The method according to  claim 9 , wherein the forming the display panel includes:
 depositing a sacrifice layer on a rigid substrate;   depositing a flexible layer on the rigid substrate; and   forming display elements on the flexible layer, and   wherein, after attaching the cover film, the method further comprises:   separating the flexible layer from the rigid substrate by removing the sacrifice layer;   attaching a back panel at a rear surface of the flexible layer.