Abstract:
There is provided a highly-reliable plasma display panel preventing deterioration of fluorescent material by hydrocarbon gas remaining in the plasma display panel, and having an excellent display quality. The plasma display panel includes: a front plate (50) having a plurality of display electrodes, each formed by a pair of a scan electrode (6) and a maintaining electrode (7); and a rear plate (60) having a partition (10) for forming a discharge cell (11). The front plate (50) and the rear plate (60) are arranged to oppose to each other. The rear plate (60) has a data electrode (9) orthogonally intersecting the display electrode formed by a pair of the scan electrode (6) and the maintaining electrode (7) on a rear substrate (2), a dielectric layer (13) covering the data electrode (9), a reflection layer (20) containing oxidization catalyst covering at least a part of the dielectric layer (13), and a fluorescent material layer (12) covering the reflection layer (20).
Abstract:
A plasma display panel wherein all the charges are positive is disclosed which comprises a green phosphor which hardly adsorbs or reacts with water, carbon monoxide, a carbon dioxide gas or a hydrocarbon. As the green phosphor, there is used a mixed phosphor obtained by combining a green phosphor M1-xAl12O19:Mnx (wherein M is Ca, Sr, Eu or Zn) having a magnetoplumbite crystal structure and one or more phosphors selected from the phosphors having yttrium borate or yttrium aluminate crystal structure which are represented by the general formula (Y1-a-yGda)(Ga1-xAlx)3(BO3)4:Tby or (Y1-a-yGda)(Ga1-xAlx)3(BO3)4:Cey, Tby; the general formula (Y1-a-yGda)BO3:Tby; or the general formula (Y1-a-yGda)3(Ga1-xAlx)5O12:Tby.
Abstract:
A method for preparing a phosphor having a host crystal comprising an oxide, which comprise steps of weighing, mixing and filling a powder of the phosphor, and thereafter one or more steps of firing the phosphor powder in a reducing atmosphere and, after the last firing in a reducing atmosphere, the step of firing the resultant phosphor in an oxidizing atmosphere, wherein the temperature for the step of firing in an oxidizing atmosphere is preferably 600 to 1000°C; and a plasma display device using a phosphor prepared by the method. A phosphor prepared by the method is reduced in the oxygen vacancy.
Abstract:
Disclosed is a plasma display wherein luminance, life and reliability of the PDP are improved by preventing deterioration of the phosphor layers. Also disclosed is a method for producing a phosphor used in such a plasma display. The plasma display comprises a plasma display panel wherein a plurality of discharge cells and phosphor layers (110R, 110G, 110B) of colors corresponding to the respective discharge cells are arranged and the phosphor layers (110R, 110G, 110B) emit light when excited by ultraviolet light. The green phosphor layer (110G) contains a green phosphor composed of Zn2SiO4:Mn, and the ratio of zinc (Zn) to silicon (Si) near the surface is set at the stoichiometric ratio of 2/1. The green phosphor is positively or zero charged.