Photopolymerization type photosensitive phosphor paste composition and method for forming fluorescent film in PDP by using the same

A photopolymerization type photosensitive flourescent paste composition consisting of:

• a water soluble binder polymer 1˜15 wt %;
• a multifunctional monomer or oligomer 3˜7 wt %;
• a photosensitizer 1˜3 wt %;
• a flourescent material 25˜35 wt %;
• a solvent for dissolving the binder polymer 20˜35 wt %;
• additives 0.1˜1 wt %;
• and,
• balance of pure water.

A method for forming a flourescent film in a PDP by using a photopolymerization type photosensitive flourescent paste composition, comprising the steps of:

• (1) preparing red, green and blue photopolymerization type photosensitive flourescent paste composition consisting of water soluble binder polymer 1˜15 wt %, multifunctional monomer or oligomer 3˜7 wt %, photoinitiator 1˜3 wt %, a solvent-which can dissolve the binder polymer 20˜35 wt %, additive 0.1˜1 wt %, pure water, and flourescent material 25˜35 wt % respectively;
• (2) coating one of the prepared red, green and blue photopolymerization type photosensitive flourescent paste compositions on a glass substrate having barriers formed thereon;
• (3) drying the coated composition;
• (4) exposing the dried composition and developing with pure water to form a first flourescent film;
• (5) processing the steps (2), (3) and (4) on one of the rest two photopolymerization type photosensitive flourescent paste compositions, to form a second flourescent film;
• (6) processing the steps (2), (3) and (4) on a finally remained photopolymerization type photosensitive flourescent paste composition, to form a third flourescent film, and,
• (7) baking the glass substrate having the first, second and third flourescent films formed thereon.