CN101615548A - Plasma panel - Google Patents

Plasma panel Download PDF

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Publication number
CN101615548A
CN101615548A CN 200810115410 CN200810115410A CN101615548A CN 101615548 A CN101615548 A CN 101615548A CN 200810115410 CN200810115410 CN 200810115410 CN 200810115410 A CN200810115410 A CN 200810115410A CN 101615548 A CN101615548 A CN 101615548A
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CN
China
Prior art keywords
electrode
sparking electrode
sparking
plasma panel
floating
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 200810115410
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Chinese (zh)
Inventor
曹瑞林
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Sichuan COC Display Devices Co Ltd
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Sichuan COC Display Devices Co Ltd
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Publication date
Application filed by Sichuan COC Display Devices Co Ltd filed Critical Sichuan COC Display Devices Co Ltd
Priority to CN 200810115410 priority Critical patent/CN101615548A/en
Priority to PCT/CN2008/073259 priority patent/WO2009155763A1/en
Publication of CN101615548A publication Critical patent/CN101615548A/en
Pending legal-status Critical Current

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    • 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
    • H01J11/22—Electrodes, e.g. special shape, material or configuration
    • H01J11/30—Floating electrodes
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Gas-Filled Discharge Tubes (AREA)

Abstract

The invention discloses a kind of plasma panel, comprise prebasal plate, wherein, on the prebasal plate except be provided with keep sparking electrode and scanning also be provided with the sparking electrode keep between sparking electrode and the scanning sparking electrode, with keep the floating electrode that sparking electrode and scanning sparking electrode are on the same surface of prebasal plate and do not link with any power source, wherein, keep the resistance value of sparking electrode, scanning sparking electrode and floating electrode all less than 45 ohm.The present invention can increase the spacing of keeping between electrode and the scan electrode by adopting floating electrode structure, makes discharge the positive column occur, thereby improves the brightness and the light efficiency of plasma panel.

Description

Plasma panel
Technical field
The present invention relates to field of display, relate more specifically to a kind of plasma panel.
Background technology
General alternating current gas discharge plasma display screen (PDP) all adopts the surface discharge type structure at present, comprises a prebasal plate and the metacoxal plate of sealing with it.Wherein, dispose transparency electrode (ITO) and silver electrode on the prebasal plate, transparency electrode and silver electrode constitute sparking electrode, and sparking electrode comprises keeps sparking electrode X and scanning sparking electrode Y; surface coverage at sparking electrode has one deck dielectric layer, covers one deck medium protective layer on the dielectric layer.Dispose on the metacoxal plate and the orthogonal addressing electrode of sparking electrode, cover one deck dielectric layer on the addressing electrode, dispose the barrier rib parallel on the dielectric layer with its addressing electrode, and the bottom in barrier rib is coated with phosphor powder layer, front-back baseboard is sealed with glass powder with low melting point, and the commingle discharging gas of be filled with neon betwixt (Ne), helium (He), xenon (Xe) etc.
Fig. 1-1,1-2 show the X on the prebasal plate of traditional PD P display screen, the schematic diagram of Y electrode structure.Wherein, header board also deserves to be called substrate.That is, human eye directly see this one side.Be special glass plate., on glass at this with methods such as magnetron sputterings, be formed with one deck ITO (tin indium oxide) film.Method with etching on ito thin film forms ITO electrode (01 among Fig. 1-2, i.e. sparking electrode among Fig. 1-1); Method with photoetching on the ITO electrode forms silver electrode (02 among Fig. 1-2); Form one deck dielectric layer (03 among Fig. 1-2) with printing process on whole planes on electrode afterwards; At last, the method for deposited by electron beam evaporation forms one deck magnesium oxide layer on the dielectric layer surface.So far traditional PD P upper substrate technology is finished.Infrabasal plate also claims the back plate, the one side that human eye be can't see in PDP.On special glass plate,, form ADD electrode (addressing electrode), on the whole planes on the ADD electrode, form one deck dielectric layer afterwards with printing process with the method for photoetching; Use blasting method, form barrier, respectively RGB fluorescent material is added being charged on the barrier again with print process or additive method.At last, apply low melting point glass dust around lower plate, so far PDP infrabasal plate technology is finished.
After last lower glass substrate completes,, carry out filling working gas, ageing etc. after the sealing-in exhaust technology, finish whole technologies lumping together.
PDP develops according to the low-pressure gas discharging principle, utilize the main luminous zone of gas discharge that negative glow and positive column are arranged, and power consumption also mainly concentrates on this two zones, the photon transformation efficiency difference of positive column and negative glow is quite big, generally speaking, the photon transformation efficiency of positive column is very high, and the photon transformation efficiency of negative glow is lower.During gas discharge, above zone not necessarily all occurs, and when interelectrode distance shortened gradually, also shortened gradually the positive column, disappears at last.Surface discharge type exchanges the raising of (AC) PDP resolution, means dwindling of sparking electrode spacing, and light efficiency reduces.
Usually, the show electrode of the prebasal plate of PDP display screen is formed (hereinafter being called for short X, Y electrode) by keeping sparking electrode X and scanning sparking electrode Y, and X, Y electrode are made up of transparency electrode (ITO) and silver electrode respectively.The transmitance height of transparency electrode, but conductance is lower, increases conductance so will add silver electrode again on transparency electrode, distance between two transparency electrodes of X, Y electrode generally is no more than 100 μ m, if surpass this distance, the some bright screen needs higher voltage, causes the puncture of screen easily.So, improve the light efficiency that PDP shields, by strengthening discharging gap, adopting positive column discharge is one of effective measures that improve the PDP luminous efficiency in PDP.
Summary of the invention
One or more problems in view of the above the invention provides a kind of new plasma panel, to improve the brightness and the light efficiency of plasma panel.
Plasma panel according to the embodiment of the invention comprises prebasal plate.Wherein, on the prebasal plate except be provided with keep sparking electrode and scanning also be provided with the sparking electrode keep between sparking electrode and the scanning sparking electrode, with keep the floating electrode that sparking electrode and scanning sparking electrode are on the same surface of prebasal plate and do not link with any power source, wherein, keep the resistance value of sparking electrode, scanning sparking electrode and floating electrode all less than 45 ohm.
Wherein, floating electrode and keep distance between the sparking electrode and equal distance between floating electrode and the scanning sparking electrode.The thickness of floating electrode is between 15 μ m to 30 μ m.The width of floating electrode is between 100 μ m to 350 μ m.The resistance of floating electrode is between 20 ohm to 70 ohm.
Wherein, keep sparking electrode and the scanning sparking electrode all only is made up of silver electrode, wherein, the resistance value that the resistance value of forming the silver electrode keep sparking electrode and composition scan the silver electrode of sparking electrode equates or does not wait.
Wherein, floating electrode only is made up of silver electrode, and wherein, the resistance value of the silver electrode of composition floating electrode equates with the resistance value of forming the silver electrode of keeping sparking electrode and/or scanning sparking electrode or do not wait.Wherein, floating electrode can be a hollow.
The present invention makes discharge the positive column occur by adopting floating electrode structure, can increase the spacing of keeping between sparking electrode and the scanning sparking electrode, thereby improves the brightness and the light efficiency of plasma panel.In addition,,, reduced the manufacturing process steps of transparency electrode simultaneously, reduced cost so not only save the ITO material because the present invention has saved transparency electrode (ITO).
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1-the 1st, the schematic diagram of the structure of traditional PD P display screen;
Fig. 1-2 is the X on the prebasal plate of traditional PD P display screen, the schematic diagram of Y electrode structure;
Fig. 2-the 1st is according to the schematic diagram of X, Y electrode and floating electrode structure on the prebasal plate of the plasma panel of the first embodiment of the present invention;
Fig. 2-the 2nd, the plane graph of the floating electrode shown in Fig. 2-1;
Fig. 3-the 1st, the schematic diagram of the X on the prebasal plate of plasma panel according to a second embodiment of the present invention, Y electrode and floating electrode structure;
Fig. 3-the 2nd, the plane graph of the floating electrode shown in Fig. 3-1;
Fig. 4 is the flow chart of process of the prebasal plate of shop drawings 2 and plasma panel shown in Figure 3.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
The invention provides a kind of novel electrode structure of plasma panel.Wherein, the present invention can increase the spacing of X, Y electrode by adopting the floating electrode structure, makes discharge the positive column occur, thereby improves the brightness and the light efficiency of PDP display screen.
In an embodiment of the present invention, remove ito transparent electrode in the X on the PDP prebasal plate, the Y electrode, only kept silver electrode, and between silver electrode, increased the floating electrode (this electrode does not link with any power source, so claim floating electrode) of a bullion.Wherein, floating electrode and X, Y electrode are equidistant.One keep potential pulse during, on floating electrode, can produce certain induced potential because the spacing of the X of floating electrode and its both sides, Y electrode is very little, thereby at first cause discharge easily at these two little gap locations.Under the effect of igniting of this two places discharge, cause the long gap discharge between X, the Y electrode.Because the electrode gap of the gap of X, Y electrode on the traditional PDP display screen that does not have floating electrode, so the positive column can appear in discharge, brightness and light efficiency can both be improved.
Fig. 2-the 1st is according to the schematic diagram of X, Y electrode and floating electrode structure on the prebasal plate of the plasma panel of the first embodiment of the present invention.As Fig. 2-1, upper substrate 01 does not have the ITO electrode, so directly uses the method for photoetching to form silver electrode 03 on the glass plate, between a pair of silver electrode, and the formation floating electrode that uses the same method, the 11st, floating electrode.Its main characteristics is that two ends do not connect power supply, is in suspended state, so be named floating electrode.
Wherein, the width of the X on the prebasal plate, Y electrode is 75 μ m; The width of floating electrode is 300 μ m; Spacing between prebasal plate and the floating electrode is 45 μ m; The plane graph of floating electrode is shown in Fig. 2-2.In the plasma experiment display screen, peak brightness is 900cd/m 2, light efficiency has improved 9%.
PDP develops according to the low-pressure gas discharging principle, utilize the main luminous zone of gas discharge that negative glow and positive column are arranged, and power consumption also mainly concentrates on this two zones, the photon transformation efficiency difference of positive column and negative glow is quite big, generally speaking, the photon transformation efficiency of positive column is very high, and the photon transformation efficiency of negative glow is lower.The distance of common PDP electrode 90 with μ m in, so the luminous main contributor of PDP is a negative glow.And example of the present invention, the interelectrode distance of PDP is 390 μ m (in order to reduce its firing voltage, increasing floating electrode in the middle of the electrode).Making the luminous main contributor of PDP is the positive column, therefore improves light efficiency.
Fig. 3-the 1st, the schematic diagram of the X on the prebasal plate of plasma panel according to a second embodiment of the present invention, Y electrode and floating electrode structure.Wherein, the width of the X on the prebasal plate, Y electrode is 80 μ m; The width of floating electrode is 310 μ m; Spacing between prebasal plate and the floating electrode is 60 μ m.The plane graph of floating electrode is shown in Fig. 3-2.
As Fig. 3-1, upper substrate 01 does not have the ITO electrode, so directly forms silver electrode 03 with the method for photoetching on the glass plate, between a pair of silver electrode, the formation floating electrode that uses the same method, Fig. 3-1,11,12, and 11a be floating electrode.Its main characteristics is that two ends do not connect power supply, is in suspended state, so be named floating electrode.The maximum characteristics of the suspension electrode among Fig. 3-1 are that its suspension electrode center is hollow, as Fig. 3-2.
In the plasma experiment display screen, peak brightness is 1000cd/m 2, light efficiency has improved 11%.Reason is, PDP develops according to the low-pressure gas discharging principle, utilize the main luminous zone of gas discharge that negative glow and positive column are arranged, and power consumption also mainly concentrates on this two zones, the photon transformation efficiency difference of positive column and negative glow is quite big, generally speaking, the photon transformation efficiency of positive column is very high, and the photon transformation efficiency of negative glow is lower.The distance of common PDP electrode 90 with μ m in, so the luminous main contributor of PDP is a negative glow.And example of the present invention, the interelectrode distance of PDP is 390 μ m (in order to reduce its firing voltage, increasing floating electrode in the middle of the electrode).Making the luminous main contributor of PDP is the positive column, and in this example, the floating electrode center is empty, does not have electrode to block, thus the raising of the transmitance of light, and link to each other around the floating electrode, therefore do not influence and electric discharge between electrodes, thereby improved light efficiency.
Fig. 4 is the flow chart of process of the prebasal plate of shop drawings 2 and plasma panel shown in Figure 3.As shown in Figure 4, this process may further comprise the steps:
1) printed medium layer on the PD200 glass substrate, dry at a certain temperature, sintering at high temperature then.
2) on PD200 glass medium layer, use method of printing, electrode coated slurry, dry at a certain temperature, sintering at high temperature then.
3) paste dry film photoresist (DFR) film.Wherein, DFR is used for transition diagram to form accurate pattern for liquid photoresist.It has been the technology of a comparative maturity that DFR does in printing in (PCB) industry.The DFR that uses in PDP generally is a minus, and promptly DFR is subjected to the crosslinked sclerosis of part meeting that UV-irradiation is crossed, and the part of not crossed by UV-irradiation can be washed off when developing.
4) exposure.Wherein, the mask plate of use is that requirement according to the electrode pattern designs (three electrode patterns).Glass substrate behind the subsides dry film is placed on the exposure machine, and this exposure machine mainly contains light source and lens are formed, and consequently produces one group of parallel ultraviolet, and this directional light reaches on the glass substrate by custom-designed mask plate.The illuminated part of substrate glazed thread is retained, and remainder is washed off when operation is developed in the back.
5) develop.The glass substrate after the exposure, be placed on the developing machine, the main effect of developing machine is, makes the developer solution (main component is a Na2CO3 solution) that configures be sprayed onto the photosensitive material surface with certain pressure, and the part of not crossed by UV-irradiation can be washed off when developing.Its main technologic parameters is as follows: 30 ℃ of development temperatures, development pressure 1.5kgf/cm 2, nozzle oscillation angle 30 degree, nozzle oscillation frequency 10R/min, developing time 45s.
6) stripping.The DFR film of development rear surface all needs it is peeled off, and the stripper solution that DFR peels off usefulness is dense strong base solution.Glass substrate after developing is placed on the stripping machine, and the liquid that configures is sprayed with certain pressure.Through repeatedly repeatedly, wash with clear water again.40 ± 1 ℃ of stripper solution temperature, stripping pressure 1.5kgf/cm 2, stripping time～120s.
7) making of the making of floating electrode and the X on the prebasal plate, Y electrode is carried out simultaneously, and the method unanimity is just the same with original technology, mask plate just, and according to the different graphic of floating electrode, promptly the center is solid or the center is blank, carries out specialized designs.Therefore this new construction does not increase any new technology.
Wherein, for the floating electrode of central space, manufacture process is as follows:
1. according to the graphic designs mask plate;
2. use method of printing, print the silver electrode paste of 10--20 μ m thickness;
3. after the electrode slurry drying after will printing, paste dry film photoresist film (DFR), use the mask plate exposure of making according to floating electrode.
4. through the development stripping, produce the show electrode of central space.
The above is embodiments of the invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.

Claims (8)

1. plasma panel, comprise prebasal plate, it is characterized in that, keep sparking electrode and scanning and also be provided with the sparking electrode and describedly keeping between sparking electrode and the described scanning sparking electrode, keeping the floating electrode that sparking electrode and described scanning sparking electrode are on the same surface of described prebasal plate and do not link with any power source except being provided with on the described prebasal plate with described, wherein, the described resistance value of sparking electrode, described scanning sparking electrode and described floating electrode of keeping is all less than 45 ohm.
2. plasma panel according to claim 1 is characterized in that, described floating electrode and the described distance of keeping between the sparking electrode equal the distance between described floating electrode and the described scanning sparking electrode.
3. plasma panel according to claim 2 is characterized in that, the thickness of described floating electrode is between 15 μ m to 30 μ m.
4. plasma panel according to claim 3 is characterized in that, the width of described floating electrode is between 100 μ m to 350 μ m.
5. plasma panel according to claim 4 is characterized in that, the resistance of described floating electrode is between 20 ohm to 70 ohm.
6. plasma panel according to claim 5, it is characterized in that, describedly keep sparking electrode and described scanning sparking electrode all only is made up of silver electrode, wherein, the described resistance value of keeping the silver electrode of sparking electrode of composition equates with the resistance value of the silver electrode of forming described scanning sparking electrode or does not wait.
7. plasma panel according to claim 6, it is characterized in that, described floating electrode only is made up of silver electrode, wherein, form described floating electrode silver electrode resistance value with form the described resistance value of keeping the silver electrode of sparking electrode and/or described scanning sparking electrode and equate or do not wait.
8. according to each described plasma panel in the claim 1 to 6, it is characterized in that described floating electrode is a hollow.
CN 200810115410 2008-06-23 2008-06-23 Plasma panel Pending CN101615548A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 200810115410 CN101615548A (en) 2008-06-23 2008-06-23 Plasma panel
PCT/CN2008/073259 WO2009155763A1 (en) 2008-06-23 2008-11-28 Plasma display panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200810115410 CN101615548A (en) 2008-06-23 2008-06-23 Plasma panel

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CN101615548A true CN101615548A (en) 2009-12-30

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WO (1) WO2009155763A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826166B1 (en) * 2001-06-13 2003-08-29 Thomson Plasma METHOD FOR CONTROLLING A PLASMA PANEL WITH CO-PLANAR MAINTENANCE DISCHARGES BETWEEN TRIADED ELECTRODES
KR100637186B1 (en) * 2004-11-16 2006-10-23 삼성에스디아이 주식회사 Plasma display panel

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Application publication date: 20091230