WO2005041240A1 - プラズマディスプレイパネル - Google Patents
プラズマディスプレイパネル Download PDFInfo
- Publication number
- WO2005041240A1 WO2005041240A1 PCT/JP2004/014303 JP2004014303W WO2005041240A1 WO 2005041240 A1 WO2005041240 A1 WO 2005041240A1 JP 2004014303 W JP2004014303 W JP 2004014303W WO 2005041240 A1 WO2005041240 A1 WO 2005041240A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protective layer
- discharge
- substrate
- electrode
- scan electrode
- Prior art date
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- 239000011241 protective layer Substances 0.000 claims abstract description 59
- 239000010410 layer Substances 0.000 claims abstract description 34
- 239000000758 substrate Substances 0.000 claims abstract description 31
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 27
- UPKIHOQVIBBESY-UHFFFAOYSA-N magnesium;carbanide Chemical compound [CH3-].[CH3-].[Mg+2] UPKIHOQVIBBESY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 23
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000011777 magnesium Substances 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 239000004215 Carbon black (E152) Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 21
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 16
- 239000011521 glass Substances 0.000 description 12
- 238000005192 partition Methods 0.000 description 12
- 230000004913 activation Effects 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 10
- 230000008020 evaporation Effects 0.000 description 10
- -1 MgC 2 Chemical compound 0.000 description 7
- 238000000151 deposition Methods 0.000 description 7
- 230000008021 deposition Effects 0.000 description 7
- 238000004544 sputter deposition Methods 0.000 description 7
- 239000000654 additive Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007733 ion plating Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000001771 vacuum deposition Methods 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052754 neon Inorganic materials 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- 241001290610 Abildgaardia Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000005394 sealing glass Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/20—Constructional details
- H01J11/34—Vessels, containers or parts thereof, e.g. substrates
- H01J11/40—Layers for protecting or enhancing the electron emission, e.g. MgO layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
- H01J11/12—AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
Definitions
- the present invention relates to a plasma display panel for displaying an image.
- CTRs cathode ray tubes
- LCDs liquid crystal displays
- PDPs plasma display panels
- the PDP performs full-color display by additively mixing the three primary colors (red, green, and blue), and emits the three primary colors, red (R), green (G), and blue (B). Phosphor layer.
- the PDP has a discharge cell, and emits visible light of each color by exciting the phosphor layer with ultraviolet rays generated by the discharge generated in the discharge cell to display an image.
- the electrodes for the main discharge are covered with a dielectric layer, and the drive voltage is reduced by performing a memory drive. If the dielectric layer is altered by the impact of the ions generated by the discharge, the driving voltage may increase. In order to prevent this rise, a protective layer for protecting the dielectric layer is formed on the surface of the dielectric layer.
- a protective layer for protecting the dielectric layer is formed on the surface of the dielectric layer.
- sputter resistant materials such as magnesium oxide (MgO)
- MgO magnesium oxide
- Discharge has a “discharge delay time” that occurs a certain time after the rise of the pulse. Depending on the driving conditions, this discharge delay time may reduce the probability that the discharge will end while the pulse is being applied. The quality may deteriorate The
- the plasma display panel includes a first substrate and a second substrate, which are opposed to each other so as to form a discharge space therebetween, a scan electrode provided on the first substrate, and a plasma display panel provided on the first substrate.
- a protective layer provided on the dielectric layer, the dielectric layer covering the scan electrode and the sustain electrode, and a protective layer provided on the dielectric layer.
- the protective layer includes magnesium oxide and magnesium carbide.
- This plasma display panel has stable discharge characteristics such as driving voltage, and therefore displays images stably.
- FIG. 1 is a partial cross-sectional perspective view of a plasma display panel (PDP) according to an embodiment of the present invention.
- PDP plasma display panel
- FIG. 2 is a cross-sectional view of the PDP according to the embodiment.
- FIG. 3 is a block diagram of an image display device using a PDP according to the embodiment.
- FIG. 4 is a time chart showing driving waveforms of the image display device shown in FIG.
- FIG. 5 shows PDP evaluation results according to the embodiment.
- FIG. 1 is a partial cross-sectional perspective view showing a schematic configuration of an AC surface discharge type plasma display panel (PDP) 101.
- FIG. 2 is a cross-sectional view of the PDP 101.
- a pair of striped scanning electrodes 3 and striped sustaining electrodes 4 form one display electrode.
- a plurality of pairs of scanning electrodes 3 and sustaining electrodes 4, that is, a plurality of display electrodes are arranged on surface 2 A of front glass substrate 2.
- a dielectric layer 5 covering the scan electrode 3 and the sustain electrode 4 is formed, and a protective layer 6 covering the dielectric layer 5 is formed.
- stripe-shaped address electrodes 9 are arranged on surface 8 A of rear glass substrate 8 at right angles to scanning electrodes 3 and sustaining electrodes 4.
- the electrode protection layer 10 covering the electrode 9 protects the electrode 9 and transmits visible light to the front panel 1.
- a partition 11 is provided on the electrode protection layer 10 so as to extend in the same direction as the address electrode 9 and sandwich the address electrode 9, and a phosphor layer 12 is provided between the partitions 11.
- Front glass substrate 2 and rear glass substrate 8 are arranged to face each other so as to form discharge space 13 therebetween.
- a mixed gas of neon (Ne) and xenon (Xe), which are rare gases is sealed as a discharge gas at a pressure of about 660 Pa (5 OOT orr).
- the intersection of the address electrode 9 with the scan electrode 3 and the sustain electrode 4 separated by the partition 11 operates as a discharge cell 14 which is a unit light emitting region.
- the rear glass substrate 8 is arranged at a predetermined distance from the protective layer 6 so as to form a discharge space 13 between itself and the protective layer 6.
- a discharge is generated in the discharge cell 14 by applying a drive voltage to the address electrode 9, the scan electrode 3, and the sustain electrode 4, and the ultraviolet light generated by the discharge is irradiated on the phosphor layer 12 to be visible.
- the image is displayed by being converted into light.
- FIG. 3 is a block diagram showing a schematic configuration of an image display device including a PDP 101 and a driving circuit for driving the PDP 101.
- the address electrode 9 of the PDP 101 is connected to the address electrode drive unit 21, the scan electrode 3 is connected to the scan electrode drive unit 22, and the sustain electrode 4 is connected to the sustain electrode drive unit 2 3 Is connected.
- one frame of video is divided into a plurality of sub-fields to cause the PDP 101 to express gradation.
- one subfield is further divided into four periods in order to control the discharge in the discharge cell 14.
- FIG. 4 shows an example of a time chart of the drive waveform in one subfield.
- FIG. 4 is a time chart showing drive waveforms of the image display device shown in FIG. 3, and shows waveforms of voltages applied to the electrodes 3, 4, and 9 in one subfield.
- an initialization pulse 51 is applied to the scan electrode 3 to accumulate wall charges in all the discharge cells 14 of the PDP 101 in order to easily generate a discharge.
- the data pulse 52 and the scan pulse 53 are applied to the address electrode 9 and the scan electrode corresponding to the discharge cell 14 to be turned on, respectively, and the discharge cell 14 to be turned on discharges. Generate electricity.
- the sustain pulses 54, 55 are applied to all the scan electrodes 3 and the sustain electrodes 4, respectively, to turn on the discharge cells 14 in which the discharge occurred in the address period 32, and to turn on the light. Let it be maintained.
- an erase pulse 56 is applied to the sustain electrode 4 to erase the wall charges accumulated in the discharge cell 14 and stop the lighting of the discharge cell 14.
- an initialization pulse 51 is applied to the scan electrode 3 so that the scan electrode 3 has a high potential with respect to both the address electrode 9 and the sustain electrode 4. Generates a discharge.
- the charge generated by the discharge is accumulated on the wall surface of the discharge cell 14 so as to cancel the potential difference between the address electrode 9, the scan electrode 3, and the sustain electrode 4.
- negative charges are accumulated as wall charges on the surface of the protective layer 6 near the scanning electrode 3.
- Positive charges are accumulated as wall charges. Due to these wall charges, a predetermined wall potential is generated between the scan electrode 3 and the address electrode 9 and between the scan electrode 3 and the sustain electrode 4.
- a scan pulse 53 is sequentially applied to the scan electrode 3 so that the scan electrode 3 has a lower potential with respect to the sustain electrode 4, and the address electrode 9 corresponding to the discharge cell 14 to be turned on is applied.
- a data pulse 52 is applied to.
- the address electrode 9 is set to have a higher potential than the scanning electrode 3. That is, a voltage is applied between the scan electrode 3 and the address electrode 9 in the same direction as the wall potential, and a voltage is applied between the scan electrode 3 and the sustain electrode 4 in the same direction as the wall potential. As a result, a write discharge is generated in the discharge cell 14.
- the generation of the write discharge is delayed by the discharge delay time. If the discharge delay time is long, writing discharge may not occur during the time (address time) when the scanning pulse 53 and the data pulse 52 are applied to the scanning electrode 3 and the address electrode 9, respectively. . In the discharge cell 14 where no write discharge occurred, the scan electrode Even if sustain pulses 54 and 55 are applied to 3 and sustain electrode 4, no discharge occurs and phosphor 12 does not emit light, which adversely affects image display. If the PDP 101 has a higher definition, the address time assigned to the scanning electrode 3 is shorter, so that the probability that writing discharge does not occur increases.
- the probability that no write discharge occurs will increase.
- the partition 11 has a grid structure surrounding the periphery of the discharge cell 14 instead of the stripe structure shown in FIG. 1, the probability of no writing discharge is increased even when the remaining impurity gas increases.
- a sustain pulse 54 is applied to the scan electrode 3 so that the scan electrode 3 has a higher potential than the sustain electrode 4. That is, a sustain discharge is generated by applying a voltage between the sustain electrode 4 and the scan electrode 3 in the same direction as the wall potential. As a result, lighting of the discharge cells 14 can be started.
- the sustain pulses 54 and 55 so that the polarity of the sustain electrode 4 and the polarity of the scan electrode 3 are alternately changed, the pulse light can be intermittently emitted in the discharge cell 14.
- the protective layer 6 in the PDP 101 according to the embodiment will be described.
- the protective layer 6 is made of a material that is magnesium oxide (MgO) including magnesium carbide, such as MgC 2 , Mg 2 C 3 , and Mg 3 C 4 .
- the protective layer 6 is formed by heating an evaporation source containing ⁇ and] ⁇ 8 2 , Mg 2 C 3 , and a magnesium carbide such as Mg 3 C 4 in an oxygen atmosphere using a piercing electron beam gun as a heating source. And deposited on the dielectric layer 5 by evaporation.
- the PDP 101 has the above-described protective layer 6, and it is considered that the protective layer 6 suppresses a mistake that a write discharge does not occur in the address period 32 for the following reason.
- the conventional protective layer contains high purity MgO of about 99.9% by MgO formed by vacuum evaporation method (EB method), has low electronegativity and high ionicity. Therefore, the Mg + ions on the surface are in an unstable (high energy) state and stabilized by adsorbing hydroxyl groups (OH groups) (for example, coloring materials, 69 (9), 1996, PP 623-631).
- OH groups hydroxyl groups
- Cascade luminescence measurement According to the graph, the force luminescence peaks due to many oxygen defects appear, and the conventional protective layer has many defects, and these defects are H 2 O, CO 2 or hydrocarbons.
- CH X Adsorbs the corresponding impurity gas (see, for example, the Institute of Electrical Engineers of Japan, EP-98-202, 1988, pp. 21).
- the main cause of the discharge delay is considered to be that it is difficult for the initial electrons, which are the trigger when the discharge starts, to be released from the protective layer into the discharge space.
- magnesium carbonate such as MgC 2 , Mg 2 C 3 , and Mg 3 C 4 to the MgO protective layer 6, the distribution state of oxygen defects in the MgO crystal changes, and as a result, It is considered that the occurrence of mistakes is suppressed.
- conditions such as the amount of the electron beam current, the oxygen partial pressure, and the temperature of the substrate 2 do not greatly affect the composition of the protective layer 6 and can be arbitrarily set.
- set vacuum degree 5.
- 0 X 1 0_ 4 P a following the temperature of the substrate 2 is 200 ° C or higher, the deposition pressure is 3. 0 X 1 0- 2 ⁇ 8. 0 X 10- 2 P a I do.
- the method of forming the protective layer 6 is not limited to the above-described vapor deposition, but may be a sputtering method or an ion plating method.
- a sputtering method for example, an evening get obtained by sintering Mg ⁇ powder containing magnesium carbide such as MgC 2 , Mg 2 C 3 , and Mg 3 C 4 in the air may be used.
- the above evaporation source in the vapor deposition method can be used.
- Mg ⁇ and magnesium carbide such as MgC 2 , Mg 2 C 3 and Mg 3 C 4 do not need to be mixed in advance in the material stage. It is also possible to prepare individual evening gates and evaporation sources of these elements, and form the protective layer 6 by mixing the materials in an evaporated state.
- the concentration of magnesium carbide in the protective layer 6 is preferably in the range of 50 ppm to 7000 ppm by weight.
- Scan electrode 3 and sustain electrode 4 are formed on front glass substrate 2, and lead-based dielectric layer 5 covers scan electrode 3 and sustain electrode 4.
- the front panel 1 is manufactured by forming a protective layer 6 containing MgO, MgO, and magnesium carbide such as MgC 2 , Mg 2 C 3 , and Mg 3 C 4 on the surface of the dielectric layer 5.
- scan electrode 3 and sustain electrode 4 are made of, for example, a transparent conductive film and a silver electrode which is a bus electrode formed on the transparent conductive film. After the transparent conductive film is formed in a stripe shape of the electrode by a photolithography method, a silver electrode is formed thereon by a photolithography method, and these are fired.
- the composition of the dielectric layer 5 of the lead-based for example, lead oxide (Pb_ ⁇ ) 75 wt%, 15 wt% boron oxide (2 0 3 B), silicon oxide (S I_ ⁇ 2) 10 wt% Deari,
- the dielectric layer 5 is formed by, for example, a screen printing method and baking.
- the protective layer 6 is formed by using a vacuum evaporation method, a sputtering method, or an ion plating method.
- the protective layer 6 is formed by a sputtering method
- a target obtained by adding magnesium carbide such as MgC 2 , Mg 2 C 3 , and Mg 3 C 4 of 50 wt ppm to 700000 wt ppm to Mg is used.
- the oxygen gas ( ⁇ 2 gas) is a r gas and a reactive gas is sputter gas.
- ⁇ 2 gas oxygen gas
- a r gas exhaust system while introducing a sputtering evening device 0 2 gas as needed
- the protective layer 6 can be formed by reducing the pressure to 0.1 Pa to 10 Pa using the above method.
- the protective layer 6 is formed by spattering the glass substrate 2 while applying a potential of 100 V to 150 V to the glass substrate 2 with a bias power supply at the same time as performing the sputtering. Is even better.
- the amount of additive in MgO is controlled by the amount of additive to be added to the target and the high-frequency power for generating discharge for sputter.
- a glass substrate 2 was heated to 20 O ° C ⁇ 40 0 ° C, under vacuum evaporation chamber with an exhaust system to 3 X 10- 4 P a, the evaporation source of electron beam Ichimuyaho port Ichiriki Sword for evaporation of the MgO and additive substances established number corresponding to the necessary, using oxygen gas (0 2 gas) as a reaction gas which These materials are deposited on the dielectric layer 6.
- oxygen gas (0 2 gas)
- the pressure was reduced in the deposition chamber with an exhaust system to 0. 0 l P a ⁇ l.
- a silver-based paste is screen-printed on the rear glass substrate 8 and then fired to form the address electrodes 9.
- a lead-based dielectric layer 18 for protecting the electrodes is formed on the address electrodes 9 by screen printing and firing.
- glass partition walls 11 are arranged and fixed at a predetermined pitch.
- the phosphor layer 12 is formed by arranging one of a red phosphor, a green phosphor, and a blue phosphor in each space between the partition walls 11.
- another partition is formed at right angles to the partition 11 shown in FIG.
- a phosphor generally used for a PDP can be used, and has, for example, the following composition.
- Red phosphor (YxGd - B0 3: Eu
- the front panel 1 and the rear panel 7 manufactured as described above were attached to each other in a state where the scanning electrodes 3, the sustaining electrodes 4, and the address electrodes 9 faced each other at right angles using a sealing glass. Seal together. Thereafter, high vacuum partitioned discharge space between 13 in the partition wall 1 1 (e.g., 3 X 10- 4 P about a) after venting (one king base exhaust), the discharge of the predetermined composition into the discharge space 13
- the PDP 101 is manufactured by filling gas at a predetermined pressure.
- the partition when the PDP 101 is used for a 40-inch class high-definition television, the size and the pitch of the discharge cells 14 are reduced. Therefore, in order to improve the brightness, a partition having a double-girder structure is preferable as the partition.
- the composition of the discharge gas to be charged is good for the conventional Ne-Xe system, but the Xe partial pressure is set to 5% or more and the charging pressure is set to the range of 450 to 76 OTorr. By doing so, the emission luminance of the discharge cells can be improved, which is preferable.
- a PDP sample prepared by the above method was prepared and evaluated.
- the material of the protective layer 6 we were prepared plural kinds of evaporation sources, including a carbide magnesium concentration ranging from 0 to 800 0 ppm by weight to be added to Mg_ ⁇ (MgC 2, etc.). Using these deposition sources, a plurality of types of front panels having a protective layer formed were fabricated, and a PDP sample was fabricated using each of them. The discharge delay time of the PDP sample was measured in an environment of ambient temperature—5 ° C to 80 ° C.
- the discharge gas sealed in the sample was a mixed gas of Ne and Xe, and the partial pressure of Xe was 5%.
- the discharge delay time here is the time from when a voltage is applied between the scan electrode 3 and the address electrode 9 to when a discharge (writing discharge) occurs.
- the time when the write discharge peaks is considered to be the time when the write discharge occurs.
- the time from applying the pulse to the sample electrode until the write discharge occurs is measured for 100 times and averaged. The discharge time was delayed.
- the activation energy is a numerical value indicating characteristics such as a change in the discharge delay time with respect to temperature. It is considered that the characteristics do not change with temperature as the activation energy value decreases.
- Figure 5 shows the concentration of magnesium carbonate added to the Mg ⁇ deposition source of the material of the protective layer 6 in the fabricated sample and the activation of the PDP with the protective layer 6 formed using the deposition source. Indicates the energy and lighting status of the PDP (with or without flicker). Here, the presence or absence of flicker is defined as “present” when flicker occurs when the ambient temperature of the PDP sample is changed between ⁇ 5 ° C. and 80 ° C.
- the activation energy of the conventional sample (Sample No. 17), which has a protective layer formed by an evaporation source of MgO without additives, is 1 and the activation energy of each sample is a relative value to the conventional sample. Indicated by
- the additive concentration of magnesium carbide in the MgO deposition source is 50 weight ⁇ !
- the activation energy of the sample of up to 7000 weight ppm is smaller than that of the sample of the conventional example of sample No. 17, and the screen does not flicker.
- MgC 2 to 8 000 activation energy conservation one the word type fee sample and MgC 2 contains 20 wt pp m including weight ppm is small compared to the sample of the conventional example of sample No. 17, screen flicker occurs are doing.
- the concentration of magnesium carbide exceeds 7,000 weight ppm, the discharge delay time increases, or the voltage required for discharge becomes abnormally high, and images cannot be displayed with the conventional voltage.
- the activation energy shown in Fig. 5 should be as small as possible.
- the relative values of the activation energies are considerably small. For this reason, even if a Ne-Xe discharge gas with an increased Xe partial pressure of 10% to 50% is sealed, the vapor deposition source of Mg ⁇ containing magnesium carbide of 50 ppm to 7000 ppm by weight In the sample having the protective layer 6 formed, flickering of the screen due to the temperature characteristics of the discharge delay is suppressed, and a good image can be displayed.
- the protective layer 6 formed by using an evaporation source of MgO containing 50 to 7000 weight ppm of magnesium carbide is composed of magnesium oxide containing 50 to 7000 ppm by weight of magnesium carbide. .
- the PDP sample having the protective layer 6 even if the Xe partial pressure of the discharge gas rises to 10% or more, an image can be displayed without changing the value of the conventional voltage applied to the electrode, and the discharge delay time is reduced. It is possible to suppress the change with respect to the temperature.
- the protective layer made of a material containing magnesium carbide in MgO can suppress the discharge delay time from changing with temperature.
- a protective layer 6 having an electron emission ability that hardly changes with temperature can be obtained.
- the PDP 101 according to the embodiment can display a good image regardless of the environmental temperature.
- the protective layer 6 may contain at least one of MgC 2 , Mg 2 C 3 or Mg 3 C 4 as magnesium carbide.
- the discharge characteristics such as the driving voltage are stable, and therefore, the image is displayed stably (
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04773477A EP1667191B1 (en) | 2003-09-26 | 2004-09-22 | Plasma display panel |
DE602004010409T DE602004010409T2 (de) | 2003-09-26 | 2004-09-22 | Plasmaanzeigetafel |
US10/539,733 US7245078B2 (en) | 2003-09-26 | 2004-09-22 | Plasma display panel having protective layer with magnesium oxide and magnesium carbide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003335271 | 2003-09-26 | ||
JP2003-335271 | 2003-09-26 |
Publications (1)
Publication Number | Publication Date |
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WO2005041240A1 true WO2005041240A1 (ja) | 2005-05-06 |
Family
ID=34509654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/014303 WO2005041240A1 (ja) | 2003-09-26 | 2004-09-22 | プラズマディスプレイパネル |
Country Status (6)
Country | Link |
---|---|
US (1) | US7245078B2 (ja) |
EP (1) | EP1667191B1 (ja) |
KR (1) | KR100733165B1 (ja) |
CN (1) | CN100394530C (ja) |
DE (1) | DE602004010409T2 (ja) |
WO (1) | WO2005041240A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2005031783A1 (ja) * | 2003-09-26 | 2005-04-07 | Matsushita Electric Industrial Co., Ltd. | プラズマディスプレイパネル |
JP4532329B2 (ja) * | 2005-04-12 | 2010-08-25 | パナソニック株式会社 | プラズマディスプレイパネル |
KR100634011B1 (ko) * | 2005-08-23 | 2006-10-16 | 엘지전자 주식회사 | 칼라 플라즈마 디스플레이 패널 및 이의 제조방법 |
JP5224438B2 (ja) * | 2007-10-15 | 2013-07-03 | 俊郎 久慈 | 透明導電膜およびその製造方法 |
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JP2000063171A (ja) * | 1998-08-11 | 2000-02-29 | Mitsubishi Materials Corp | 多結晶MgO蒸着材 |
JP2003226960A (ja) * | 2001-11-30 | 2003-08-15 | Mitsubishi Materials Corp | MgO蒸着材およびその製造方法 |
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JPS4810306B1 (ja) | 1964-06-04 | 1973-04-02 | ||
US4529659A (en) * | 1983-11-05 | 1985-07-16 | Nippon Telegraph & Telephone Public Corporation | Magnetic recording member and process for manufacturing the same |
US5124219A (en) * | 1989-03-15 | 1992-06-23 | Minolta Camera Kabushiki Kaisha | Photosensitive member for electrophotography comprising specified nylon copolymer |
TW498382B (en) * | 2000-05-11 | 2002-08-11 | Matsushita Electric Ind Co Ltd | Electron releasing membrane, plasma display panel using the electron releasing membrane, and production method thereof |
JP2002260535A (ja) * | 2001-03-01 | 2002-09-13 | Hitachi Ltd | プラズマディスプレイパネル |
JP4073201B2 (ja) | 2001-11-09 | 2008-04-09 | 株式会社日立製作所 | プラズマディスプレイパネル及びそれを備えた画像表示装置 |
JP4225761B2 (ja) * | 2002-10-10 | 2009-02-18 | 三菱マテリアル株式会社 | Si濃度を調整した多結晶MgO蒸着材 |
WO2005031783A1 (ja) * | 2003-09-26 | 2005-04-07 | Matsushita Electric Industrial Co., Ltd. | プラズマディスプレイパネル |
-
2004
- 2004-09-22 KR KR1020057014028A patent/KR100733165B1/ko not_active IP Right Cessation
- 2004-09-22 US US10/539,733 patent/US7245078B2/en not_active Expired - Fee Related
- 2004-09-22 DE DE602004010409T patent/DE602004010409T2/de not_active Expired - Lifetime
- 2004-09-22 EP EP04773477A patent/EP1667191B1/en not_active Expired - Lifetime
- 2004-09-22 CN CNB2004800029038A patent/CN100394530C/zh not_active Expired - Fee Related
- 2004-09-22 WO PCT/JP2004/014303 patent/WO2005041240A1/ja active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000063171A (ja) * | 1998-08-11 | 2000-02-29 | Mitsubishi Materials Corp | 多結晶MgO蒸着材 |
JP2003226960A (ja) * | 2001-11-30 | 2003-08-15 | Mitsubishi Materials Corp | MgO蒸着材およびその製造方法 |
Non-Patent Citations (1)
Title |
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See also references of EP1667191A4 * |
Also Published As
Publication number | Publication date |
---|---|
KR20060012569A (ko) | 2006-02-08 |
EP1667191A1 (en) | 2006-06-07 |
US20060066239A1 (en) | 2006-03-30 |
EP1667191B1 (en) | 2007-11-28 |
KR100733165B1 (ko) | 2007-06-27 |
DE602004010409D1 (de) | 2008-01-10 |
EP1667191A4 (en) | 2007-01-24 |
CN100394530C (zh) | 2008-06-11 |
DE602004010409T2 (de) | 2008-10-16 |
CN1742355A (zh) | 2006-03-01 |
US7245078B2 (en) | 2007-07-17 |
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