Plasma display panel and method for producing the same

A method of fabricating a plasma display panel provided with a pair of substrates disposed opposite each other to form a discharge space therebetween, a plurality of band-like barrier ribs arranged in parallel on one of the substrates on a rear or front side to partition the discharge space, and fluorescent layers provided in elongated grooves between the barrier ribs, the plasma display panel being characterized in that wall-like projections which are lower than the barrier ribs and high enough to increase a formation area of the fluorescent layers are provided in the elongated grooves between the barrier ribs and the fluorescent layers are formed in the grooves including the wall-like projections between the barrier ribs, the method, comprising:

• in the formation of the wall-ike projections and the barrier ribs on one of the substrates on the rear or front side of the plasma display panel,
• forming a barrier rib pattern of a light-tight material on a light-transmissive substrate;
• forming thereon a first photosensitive material layer;
• disposing thereon a photolithographic mask having a pattern of the wall-like projections, followed by exposure;
• without development, forming a second photosensitive material layer on the first photosensitive material layer;
• exposing the resulting substrate from a rear surface thereof, followed by developing, thereby producing a master having the wall-like projections and the barrier ribs formed on the substrate;
• and
• producing a transfer mold using the master, filling a barrier rib material in concaves of the transfer mold, and transferring the barrier rib material onto the substrate for the plasma display panel, or
• producing a pressing mold using the master and pressing a barrier rib material on the substrate for the plasma display panel;
• thereby forming the wall-like projections and the barrier ribs.

A method of fabricating a plasma display panel provided with a pair of substrates disposed opposite each other to form a discharge space therebetween, a plurality of band-like barrier ribs arranged in parallel on one of the substrates on a rear or front side to partition the discharge space, and fluorescent layers provided in elongated grooves between the barrier ribs, the plasma display panel being characterized in that wall-like projections which are lower than the barrier ribs and high enough to increase a formation area of the fluorescent layers are provided in the elongated grooves between the barrier ribs and the fluorescent layers are formed in the grooves including over the wall-like projections between the barrier ribs, the method comprising:

• in the formation of the wall-like projections and the barrier ribs on one of the substrates on the rear or front side of the plasma display panel,
• forming a lattice of a sandblast-resistant material on said one of the substrates;
• thereafter forming a barrier rib material layer of good sandblastability on said one of the substrates;
• forming thereon a sandblast-resistant pattern using a photolithographic technique;
• and
• sandblasting the barrier rib material layer via the pattern thereby forming the wall-like projections and the barrier ribs.

A method of fabricating a plasma display panel provided with a pair of substrates disposed opposite each other to form a discharge space therebetween, a plurality of band-like barrier ribs arranged in parallel on one of the substrates on a rear or front side to partition the discharge space, and fluorescent layers provided in elongated grooves between the barrier ribs, the plasma display panel being characterized in that wall-like projections which are lower than the barrier ribs and high enough to increase a formation area of the fluorescent layers are provided in the elongated grooves between the barrier ribs and the fluorescent layers are formed in the grooves induding the wall-like projections between the barrier ribs, the method comprising:

• in the formation of the wall-like projections and the barrier ribs on one of the substrates on the rear or front side of the plasma display panel,
• forming first wall-like projections and second wall-like projections having the same height and crossing each other on the substrate, and
• forming projections on either one of the first and second wall-like projections to the height of the barrier ribs,
• thereby forming the wall-like projections and the barrier ribs.

A method of fabricating a plasma display panel provided with a pair of substrates disposed opposite each other to form a discharge space therebetween, a plurality of band-like barrier ribs arranged in parallel on one of the substrates on a rear or front side to partition the discharge space, and fluorescent layers provided in elongated grooves between the barrier ribs, the plasma display panel being characterized in that wall-like projections which are lower than the barrier ribs and high enough to increase a formation area of the fluorescent layers are provided in the elongated grooves between the barrier ribs and the fluorescent layers are formed in the grooves including the wall-like projections between the barrier ribs, the method comprising:

• in the formation of the wall-like projections and the barrier ribs on one of the substrates on the rear or front side of the plasma display panel,
• forming a first photosensitive barrier rib material layer on the substrate;
• disposing thereon a photolithographic mask having a pattern of the wall-like projections, followed by exposure;
• without development, forming a second photosensitive barrier rib material layer on the first photosensitive barrier rib material layer;
• and
• disposing thereon a photolithographic mask having a pattern of the barrier ribs, followed by exposure and development,
• thereby forming the wall-like projections and the barrier ribs.

A method of fabricating a plasma display panel provided with a pair of substrates disposed opposite each other to form a discharge space therebetween, a plurality of band-like barrier ribs arranged in parallel on one of the substrates on a rear or front side to partition the discharge space, and fluorescent layers provided in elongated grooves between the barrier ribs, the plasma display panel being characterized in that wall-like projections which are lower than the barrier ribs and high enough to Increase a formation area of the fluorescent layers are provided in the elongated grooves between the barrier ribs and the fluorescent layers are formed in the grooves induding the wall-like projections between the barrier ribs, the method comprising:

• in the formation of the wall-like projections and the barrier ribs on one of the substrates on the rear or front side of the plasma display panel,
• forming a pattern of the barrier ribs of a light-tight material on a light-transmissive substrate;
• forming thereon a first photosensitive barrier rib material layer;
• disposing thereon a photolithographic mask having a pattern of the wall-like projections, followed by exposure;
• without development, forming a second photosensitive barrier rib material layer on the first photosensitive barrier rib material layer, and
• performing exposure from a rear face of the substrate, followed development,
• thereby forming the wall-like projections and the barrier ribs.

A method of fabricating a plasma display panel provided with a pair of substrates disposed opposite each other to form a discharge space between, a plurality of barrier ribs in stripes arranged in parallel on either one of the substrates to partition the discharge space, and wall-like projections lower than the barrier ribs provided in elongate grooves between the barrier ribs, characterized in that the projections are formed by a process comprising:

• forming a projection material layer on one of the pair of substrates;
• forming thereon a masking pattern for the projections of a sandblast-resistant material;
• forming thereon a barrier rib material layer;
• forming thereon a masking pattern for the barrier ribs of a sandblast-resistant material;
• and
• forming the projections and the barrier ribs simultaneously by a single sandblasting operation.