Phosphors for a plasma display panel, and a plasma display panel using the same

Abstract

The invention discloses a plasma display panel and phosphor powder used for the plasma display panel. The plasma display panel includes a first substrate and a second substrate facing each other. The discharge sustaining electrodes are placed on the first substrate. A dielectric layer covers the discharge sustaining electrodes. A protective layer of MgO covers the dielectric layer. Address electrodes are placed on the second substrate. Barrier ribs are arranged between the first substrate and the second substrate to form a plurality of discharge cells. A fluorescent layer is disposed on the second substrate between the barrier ribs in each discharge cell. The fluorescent layer includes a first non-fluorescent material and a second fluorescent material. The first non-fluorescent material has a larger MgO adhesion coefficient than the second fluorescent material.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2003-0072331 filed on October 16, 2003, the entire disclosure of which is incorporated herein by reference. technical field

[0002] The present invention relates to phosphors for use in plasma display panels, and more particularly to plasma display panels including these phosphors which improve brightness retention upon plasma discharge. Background technique

[0003] In general, a plasma display panel ("PDP") is a device that displays images through plasma discharge. Plasma discharge is generated between electrodes by applying a voltage to electrodes on the PDP substrate. This plasma discharge emits ultraviolet rays, which excite phosphors in a predetermined pattern, thereby displaying desired images on the PDP. There are three types of plasma display panels: AC type, DC type and hybrid type.

[0004] image 3 It is an exploded perspective view of a common AC type PDP. The PDP 100 includes: a b...

Examples

Embodiment

[0027]First dissolve the binder, nitroethyl cellulose ("NEC") in a solvent to provide an appropriate viscosity, then add optical initiators, multifunctional monomers and various additives to prepare a high molecular weight liquid solution. A fluorescent powder containing 20% ​​by weight of MgO is added as the first non-fluorescent material to the high molecular weight liquid solution. The solution was then stirred with a high speed stirrer. Then, the phosphor powder is evenly dispersed by three rollers to form a photosensitive phosphor slurry while controlling the viscosity. The fluorescent paste is then coated between the barrier ribs and fired to make a PDP. Brightness was measured at 0 hours, 100 hours, 200 hours, 300 hours and 400 hours.

[0001] This application claims priority from Korean Patent Application No. 10-2003-0072331 filed on October 16, 2003, the entire disclosure of which is incorporated herein by reference. technical field

[0002] The present invention relates to phosphors for use in plasma display panels, and more particularly to plasma display panels including these phosphors which improve brightness retention upon plasma discharge. Background technique

[0003] In general, a plasma display panel ("PDP") is a device that displays images through plasma discharge. Plasma discharge is generated between electrodes by applying a voltage to electrodes on the PDP substrate. This plasma discharge emits ultraviolet rays, which excite phosphors in a predetermined pattern, thereby displaying desired images on the PDP. There are three types of plasma display panels: AC type, DC type and hybrid type.

[0004] image 3 It is an exploded perspective view of a common AC type PDP. The PDP 100 includes: a b...

Examples

Embodiment

[0027]First dissolve the binder, nitroethyl cellulose ("NEC") in a solvent to provide an appropriate viscosity, then add optical initiators, multifunctional monomers and various additives to prepare a high molecular weight liquid solution. A fluorescent powder containing 20% ​​by weight of MgO is added as the first non-fluorescent material to the high molecular weight liquid solution. The solution was then stirred with a high speed stirrer. Then, the phosphor powder is evenly dispersed by three rollers to form a photosensitive phosphor slurry while controlling the viscosity. The fluorescent paste is then coated between the barrier ribs and fired to make a PDP. Brightness was measured at 0 hours, 100 hours, 200 hours, 300 hours and 400 hours.

Images