Method of producing plasma display panel with protective layer of an alkaline earth oxide
a technology of alkali earth oxide and plasma display panel, which is applied in the manufacture of electrodes, electrode systems, electric discharge tubes/lamps, etc., can solve the problems of lcds consuming a small amount of electricity, crts are not suitable for large screen sizes, and the thickness and weight increase, so as to improve the efficiency of conversion and improve the brightness of the panel. , the effect of improving the life of the panel
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embodiment 1
Structure and Production Method
[0040]FIG. 2 is a sectional view of a discharge PDP of the present embodiment. Though FIG. 2 shows only one cell, a PDP includes a number of cells each of which emits red, green, or blue light.
[0041]The present PDP includes: a front panel which is made up of front glass substrate 11 with display electrodes 12 and dielectric glass layer 13 thereon; and a back panel which is made up of back glass substrate 15 with address electrode 16, partition walls 17, and fluorescent substance layer 18, the front panel and back panel being bonded together. Discharge space 19, which is sealed with the front panel and back panel, is charged with a discharge gas. The present PDP is made as follows.
[0042]Producing the Front Panel
[0043]The front panel is made by forming display electrodes 12 onto front glass substrate 11, covering it with dielectrics glass layer 13, then forming protecting layer 14 on the surface of dielectric glass layer 13.
[0044]In the present embodimen...
examples 1-9
[0102]Table 1 shows PDP Examples 1-9 which were made according to the present embodiment. The cell size of the PDP was set as follows: the height of partition walls 7 is 0.15 mm, the distance between partition walls 7 (cell pitch) 0.15 mm, and distance d between discharge electrodes 12 is 0.05 mm.
[0103]Dielectric glass layer 13, being lead glass, was formed by transferring a mixture of 75% by weight of lead oxide (PbO), 15% by weight of boron oxide (B2O3), 10% by weight of silicon oxide (SiO2), and organic binder (made by dissolving 10% ethyl cellulose in α-terpineol) onto front glass substrate 11 with display electrodes 12 by screen printing and baking them for 10 minutes at 520° C. The thickness of dielectric glass layer 13 was set to 20 μm.
[0104]The ratio of He to Xe in the discharge gas and the charging pressure were set as shown in Table 1 except that the ratio of He in the discharge gas was set to less than 10% by volume for Examples 7 and 9 and that the charging pressure for ...
embodiment 2
[0110]The overall structure and production method of the PDP of the present embodiment is the same as that of Embodiment 1 except that a dense protecting layer consisting of magnesium oxide with (100)-face orientation is formed with a printing method shown below.
Forming of Protecting Layer with Printing Method
[0111]A dense protecting layer consisting of magnesium oxide with (100)-face orientation is formed by transferring magnesium salt paste with a plate-shaped crystal structure onto the dielectric glass layer and baking it.
[0112]The magnesium salts with a plate-shaped crystal structure for use are magnesium carbonate (MgCO3), magnesium hydroxide (Mg(OH)2), magnesium oxalate (MgC2O4), etc. The production methods of these magnesium salts are described below in Examples 10-14.
[0113]The dense protecting layer consisting of magnesium oxide with (100)-face orientation formed by the printing method has the same effects as that formed with the method shown in Embodiment 1.
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Abstract
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