Medium protective layer material used for PDP, preparation method and medium protective layer
A medium protection, layer material technology, applied in the manufacture of ships or lead wires, discharge tubes, electrical components, etc., can solve the problems of low luminous efficiency, low secondary electron emission coefficient, limitation of brightness of PDP display screen, etc. Effects of luminous efficiency, reduction of discharge voltage, and improvement of secondary electron emission coefficient
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[0025] In a typical implementation of the present invention, the method for preparing a dielectric protection layer for a PDP includes: 1) preparing a MgO deposition source; 2) forming a dielectric protection layer by vacuum deposition of the MgO deposition source.
[0026] Preferably, the MgO deposition source is prepared by the following steps: 1) uniformly mixing MgO with the above-mentioned doped metal oxide to form a mixture; 2) extruding the mixture in a mold to form a granular material; 3) calcining the granular material; 4 ) to sinter the granular material to generate doped polycrystalline MgO particles.
[0027] In another embodiment of the present invention, preferably, the MgO deposition source is prepared by the following steps: 1) uniformly mixing MgO with the above-mentioned doped metal oxide to form a mixture; 2) arc melting the mixture to generate a doped MgO single crystal .
[0028] The MgO deposition source forms a dielectric protection layer through a vacu...
Embodiment 1-6 and comparative example 1
[0032] MgO deposition sources using undoped (Comparative Example 1), doped with CaO alone (Example 1-3), CaO as the first dopant, and BeO as the second dopant (Example 4-6) were obtained by Electron beam evaporation method was used to prepare the PDP front substrate dielectric protective layer, wherein the doping amounts of CaO and BeO were as shown in Table 1. After the PDP screen was sealed and aged for the whole screen, the above-mentioned Examples 1-6 and Comparative Example 1 PDP screen for measurement, the obtained ignition voltage, maintenance voltage and luminous efficiency are shown in Table 1:
[0033] Table 1
[0034]
[0035] It can be seen from the data in Table 1 that the firing voltage and sustaining voltage of the PDP screen prepared by the CaO-doped MgO deposition source are lower than those of the PDP screen prepared by the undoped MgO deposition source, while The luminous efficiency is significantly improved. Increasing the doping amount of CaO ca...
Embodiment 7-12 and comparative example 2
[0037]MgO deposition sources using undoped (Comparative Example 2), doped SrO alone (Examples 7-9), SrO as the first dopant, and BeO as the second dopant (Examples 10-12) were obtained by Prepare the PDP front substrate dielectric protection layer by ion plating method, wherein the doping amount of SrO and BeO is as shown in Table 2, after the PDP screen that is made is carried out the whole screen sealing and arranging seasoning, to above-mentioned embodiment 7-12 and comparative example 2 The PDP screen is measured, and the obtained ignition voltage, maintenance voltage and luminous efficiency are shown in Table 2:
[0038] Table 2
[0039]
[0040] It can be seen from the data in Table 2 that the ignition voltage and sustain voltage of the PDP screen prepared by the SrO-doped MgO deposition source are lower than those of the PDP screen prepared by the undoped MgO deposition source, while The luminous efficiency is significantly improved. Increasing the doping amo...
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