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CN102087943A - Method for preparing MgO protective layer for color plasma display panel (PDP) - Google Patents

Method for preparing MgO protective layer for color plasma display panel (PDP) Download PDF

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Publication number
CN102087943A
CN102087943A CN2010106204682A CN201010620468A CN102087943A CN 102087943 A CN102087943 A CN 102087943A CN 2010106204682 A CN2010106204682 A CN 2010106204682A CN 201010620468 A CN201010620468 A CN 201010620468A CN 102087943 A CN102087943 A CN 102087943A
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mgo
plasma display
color plasma
protective layer
preparation
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CN2010106204682A
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Inventor
闫梁臣
吕旭东
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Sichuan COC Display Devices Co Ltd
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Sichuan COC Display Devices Co Ltd
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Abstract

The invention provides a method for preparing an MgO protective layer for a color plasma display panel (PDP). The method comprises the following steps: in the oxygen-enriched atmosphere with oxygen partial pressure of 1-10Pa, depositing a film protective layer with thickness of 600-800nm on a dielectric layer on a glass substrate of a color PDP by evaporation; and then depositing an MgO granular layer with a coverage rate of 5-80% per unit area on the film protective layer by adopting the plasma spraying technology, wherein the grain size of the MgO granular layer is 30-500nm. By adopting the preparation method, the electrode layer and the dielectric layer are protected from being bombarded by the plasmas generated by glow discharge of inert gases, thus prolonging the service life of the PDP; and the discharge delay time can be shortened, and a certain amount of excited secondary electrons can be provided to further reduce the ignition voltage, thus improving the electrical property of the PDP.

Description

The color plasma display preparation method of MgO protective layer
Technical field
The present invention relates to the gas glow discharge technical field, more specifically, relate to the preparation method of a kind of color plasma display with the MgO protective layer.
Background technology
At present, the medium protective layer on the prebasal plate of color plasma display is generally the MgO film, and its conventional preparation method adopts the method preparation of electron beam evaporation MgO particle in oxygen-enriched atmosphere.The MgO film surface that this method prepares is very fine and close, be difficult for producing secondary electron and store charge, thereby the discharge delay time that causes PDP to shield when discharging increases, and has influenced the electric property of PDP screen.
Summary of the invention
The present invention aims to provide a kind of discharge delay time that can reduce the PDP screen, and the color plasma display that is easy to the realize preparation method of MgO protective layer.
A kind of color plasma display according to the present invention preparation method of MgO protective layer; in oxygen-enriched atmosphere; evaporation thickness is the thinfilm protective coating of 600-800nm on dielectric layer on the glass substrate of color plasma display; then thereon the using plasma spraying technology to deposit one deck unit are coverage rate again be 5%~80%, particle diameter is the MgO stratum granulosum of 30-500nm.
Further, thinfilm protective coating is made of MgO.
Preferably, the unit are coverage rate of described MgO stratum granulosum is 5% to 40%, and particle diameter is 30-300nm.
Preferably, the unit are coverage rate of described MgO stratum granulosum is 10% to 40%, and particle diameter is 80-300nm.
Preferably, the unit are coverage rate of described MgO stratum granulosum is 10% to 30%, and particle diameter is 80-200nm.
Preferably, the unit are coverage rate of described MgO stratum granulosum is 15% to 20%, and particle diameter is 100-150nm.
Preferably, the unit are coverage rate of described MgO stratum granulosum is about 15 to 18%, and particle diameter is 100-150nm.
Further, preparation has ito transparent electrode, BUS electrode and dielectric layer on the glass substrate.
Further, thinfilm protective coating is arranged in the prebasal plate of color plasma display.
Adopt the preparation method of color plasma display of the present invention with the MgO protective layer; evaporation thickness is the thinfilm protective coating of 600-800nm on dielectric layer on the glass substrate of color plasma display, and the using plasma spraying technology deposits the loose relatively MgO stratum granulosum of one deck more thereon then.This preparation method's one side guard electrode and dielectric layer are avoided the bombardment of the plasma of inert gas glow discharge generation, thus the useful life of improving PDP; Can reduce discharge delay time on the other hand, and certain secondary electron that is stimulated is provided, thereby reduce firing voltage, thereby improve the electric property of PDP screen.Wherein, adopt the dielectric layer of the stack pile of P color layer.
Description of drawings
Fig. 1 shows the structural representation of the prebasal plate of color plasma display.
Embodiment
In a specific embodiment of the present invention; the preparation method of a kind of color plasma display with the MgO protective layer is provided; in oxygen-enriched atmosphere; evaporation thickness is the thinfilm protective coating of 600-800nm on dielectric layer on the glass substrate of color plasma display; then thereon the using plasma spraying technology to deposit one deck unit are coverage rate again be 5%~80%, particle diameter is the MgO stratum granulosum of 30-500nm.
In a preferred implementation, thinfilm protective coating is made of MgO.
The unit are coverage rate of described MgO stratum granulosum is 5% to 40% more preferably in the execution mode at one, and particle diameter is 30-300nm.
More preferably in the execution mode, the unit are coverage rate of described MgO stratum granulosum is 10% to 40% at another, and particle diameter is 80-300nm.
In yet another preferred embodiment, the unit are coverage rate of described MgO stratum granulosum is 10% to 30%, and particle diameter is 80-200nm.
In another preferred implementation, the unit are coverage rate of described MgO stratum granulosum is 15% to 20%, and particle diameter is 100-150nm.
In yet another preferred embodiment, the unit are coverage rate of described MgO stratum granulosum is about 15 to 18%, and particle diameter is 100-150nm.
In a preferred implementation, preparation has ito transparent electrode, BUS electrode and dielectric layer on the glass substrate.
In a preferred implementation,, thinfilm protective coating is arranged in the prebasal plate of color plasma display.
Below in conjunction with embodiment and comparative example, describe the present invention in detail.The particle diameter of the MgO stratum granulosum that following using plasma spraying technology deposits again is the average grain diameter or the median particle diameter of MgO stratum granulosum.
The thickness of evaporation is the thinfilm protective coating of 600-800nm on dielectric layer, i.e. ground floor MgO protective layer uses the EIH-135 type vacuum evaporation plating machine of Japanese vacuum Co., Ltd. to apply.
The spraying of MgO stratum granulosum uses the CMD-PA60 type plasma spraying equipment of Beijing new enlightening sufacing equipment Co., Ltd to apply.
Have in preparation on the glass substrate of color plasma display of ito transparent electrode, BUS electrode and dielectric layer; in partial pressure of oxygen is under the oxygen-enriched atmosphere condition of 1~10Pa; evaporation thickness is the MgO thinfilm protective coating of 600-800nm on the dielectric layer on this glass substrate; then thereon the using plasma spraying technology to deposit one deck unit are coverage rate again be 5%~80%, particle diameter is the MgO stratum granulosum of 30-500nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.
(1) discharge delay: with photomultiplier to the waveform of the input and output measurement discharge delay of comparing, instrument model H10721-20;
(2) firing voltage: at the measurement of carrying out firing voltage on the ageing machine after to the display screen ageing, instrument model PROSYS PSE-4106;
(3) life-span: with luminance meter brightness is measured, when brightness drops to original intensity value 50%, think that the life-span ends instrument model C S-100A.
Behind the positive ion bombardment MgO protective layer that gas discharge produces; can produce digging action at film surface and form depression, and after having sprayed the MgO particle, the MgO sputter meeting that the bombardment back produces is deposited in rapidly on the MgO particle; so can stand the ion bombardment of longer time, thereby improve the PDP life-span.
Behind the positive ion bombardment MgO protective layer that gas discharge produces, can produce digging action at film surface and form depression, the discharge delay of recess is with elongated.And after having sprayed the MgO particle, the MgO sputter meeting that the bombardment back produces is deposited in rapidly on the MgO particle, and the discharge delay of this moment will occur in MgO particle place makes discharge delay shorten relatively.
The variation of MgO protective layer surface appearance can make the secondary electron yield of this rete of positive ion bombardment behind the gas ionization change, and the variation of secondary electron yield will have influence on the variation of firing voltage, the two relation that is inversely proportional to a certain extent.MgO stratum granulosum by plasma spraying has changed former MgO protective layer surface topography, makes its secondary electron yield improve, thereby has reduced firing voltage.
The color plasma display that method of the present invention provides with the MgO protective layer on the one hand guard electrode and dielectric layer avoid the bombardment of the plasma that inert gas glow discharge produces, thereby the useful life of improving PDP; Can reduce discharge delay time on the other hand, and certain secondary electron that is stimulated is provided, thereby reduce firing voltage.
Embodiment
Comparative example 1 (blank test)
The preparation color plasma display; wherein have on the glass substrate of color plasma display of ito transparent electrode, BUS electrode and dielectric layer in preparation; in partial pressure of oxygen is under the oxygen-enriched atmosphere condition of 1~10Pa, and evaporation thickness is the MgO thinfilm protective coating of 600-800nm on the dielectric layer on this glass substrate.Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Its firing voltage is 295V, and discharge delay is 1.55 μ s, and the life-span is 60000h.
Embodiment 1
Have in preparation on the glass substrate of color plasma display of ito transparent electrode, BUS electrode and dielectric layer; in partial pressure of oxygen is under the oxygen-enriched atmosphere condition of 1~10Pa; evaporation thickness is the MgO thinfilm protective coating of 600-800nm on the dielectric layer on this glass substrate; the using plasma spraying technology deposits one deck unit are coverage rate again about 5% thereon then, and average grain diameter is the MgO stratum granulosum of about 30nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.
Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 1.5 μ s, has shortened 0.05 μ s, and firing voltage is 290V, has reduced 5V, and the life-span does not have improvement.
Embodiment 2
Have in preparation on the glass substrate of color plasma display of ito transparent electrode, BUS electrode and dielectric layer; in partial pressure of oxygen is under the oxygen-enriched atmosphere condition of 1~10Pa; evaporation thickness is the MgO thinfilm protective coating of 600-800nm on the dielectric layer on this glass substrate; then thereon the using plasma spraying technology to deposit one deck unit are coverage rate more about 10%, particle diameter is the MgO stratum granulosum of about 30nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.
Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 1.4 μ s, has shortened 0.15 μ s, and firing voltage is 285V, reduces 10V, and the life-span does not have improvement.
Embodiment 3
Preparing the prebasal plate of color plasma display according to the mode identical with embodiment 1, is about 10% with the MgO stratum granulosum unit are coverage rate of plasma spraying just, and particle diameter is about 80nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 1.05 μ s, has shortened 0.5 μ s, and firing voltage is 285V, has reduced 10V, and the life-span prolongs 2000h.
Embodiment 4
Preparing the prebasal plate of color plasma display according to the mode identical with embodiment 1, is about 15% with the MgO stratum granulosum unit are coverage rate of plasma spraying just, and particle diameter is about 100nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 0.8 μ s, has shortened 0.75 μ s, and firing voltage is 280V, has reduced 15V, and the life-span prolongs 3000h.
Embodiment 5
Preparing the prebasal plate of color plasma display according to the mode identical with embodiment 1, is about 15% with the MgO stratum granulosum unit are coverage rate of plasma spraying just, and particle diameter is about 150nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 0.7 μ s, has shortened 0.85 μ s, and firing voltage is 275V, has reduced 25V, and the life-span prolongs 3000h.
Embodiment 6
Preparing the prebasal plate of color plasma display according to the mode identical with embodiment 1, is about 20% with the MgO stratum granulosum unit are coverage rate of plasma spraying just, and particle diameter is about 150nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 0.8 μ s, has shortened 0.75 μ s, and firing voltage is 275V, has reduced 20V, and the life-span prolongs 1000h.
Embodiment 7
Preparing the prebasal plate of color plasma display according to the mode identical with embodiment 1, is about 30% with the MgO stratum granulosum unit are coverage rate of plasma spraying just, and particle diameter is about 100nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 1.0 μ s, has shortened 0.55 μ s, and firing voltage is 280V, has reduced 15V, and the life-span prolongs 2000h.
Embodiment 8
Preparing the prebasal plate of color plasma display according to the mode identical with embodiment 1, is about 30% with the MgO stratum granulosum unit are coverage rate of plasma spraying just, and particle diameter is about 150nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 0.8 μ s, has shortened 0.75 μ s, and firing voltage is 285V, has reduced 10V, and the life-span prolongs 3000h.
Embodiment 9
Preparing the prebasal plate of color plasma display according to the mode identical with embodiment 1, is about 10% with the MgO stratum granulosum unit are coverage rate of plasma spraying just, and particle diameter is about 200nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 0.5 μ s, has shortened 1.05 μ s, and firing voltage is 260V, has reduced 35V, and the life-span prolongs 1000h.
Embodiment 10
Preparing the prebasal plate of color plasma display according to the mode identical with embodiment 1, is about 10% with the MgO stratum granulosum unit are coverage rate of plasma spraying just, and particle diameter is about 300nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 0.65 μ s, has shortened 0.9 μ s, and firing voltage is 260V, has reduced 35V, and the life-span prolongs 2000h.
Embodiment 11
Preparing the prebasal plate of color plasma display according to the mode identical with embodiment 1, is about 40% with the MgO stratum granulosum unit are coverage rate of plasma spraying just, and particle diameter is about 300nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 1.0 μ s, has shortened 0.55 μ s, and firing voltage is 275V, has reduced 20V, lost of life 2000h.
Embodiment 12
Preparing the prebasal plate of color plasma display according to the mode identical with embodiment 1, is about 80% with the MgO stratum granulosum unit are coverage rate of plasma spraying just, and particle diameter is about 500nm.
Test performances such as its discharge delay, firing voltage and life-span for the color plasma display that comprises the prebasal plate that makes thus.Compare with comparative example 1, the discharge delay that comprises the color plasma display of the prebasal plate that makes thus is 1.45 μ s, has shortened 0.1 μ s, and firing voltage is 290V, has reduced 5V, lost of life 10000h.
Impact of performance test:
From discharge delay time, firing voltage, life-span three aspect of performances resulting color plasma display each embodiment and the comparative example is tested.
(1) discharge delay: with photomultiplier to the waveform of the input and output measurement discharge delay of comparing, instrument model H10721-20;
(2) firing voltage: at the measurement of carrying out firing voltage on the ageing machine after to the display screen ageing, instrument model PROSYS PSE-4106;
(3) life-span: with luminance meter brightness is measured, when brightness drops to original intensity value 50%, think that the life-span ends instrument model C S-100A.
Test result for discharge delay time, firing voltage, life-span three performances is illustrated in the table 1.
Table 1
Figure BDA0000042537560000111
Can draw from table 1 data, spraying one deck MgO stratum granulosum is more significant to the influence of above-mentioned three performance parameters on the MgO protective layer.In MgO stratum granulosum coverage rate is all can be to three performance parameter generating influences in the 5%-80% scope.Firing voltage reduces, discharge delay time shortens, ILS along with coverage rate increases, but particle diameter is also bigger to the These parameters influence, and particle diameter does not have and obviously improves effect during less than 80nm, and particle diameter is during greater than 200nm, and effect can reduce even deterioration.The optimization scope is coverage rate 10%-30%, particle diameter 80-200nm.
The above is the preferred embodiments of the present 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 protection scope of the present invention.

Claims (9)

1. a color plasma display is with the preparation method of MgO protective layer; may further comprise the steps; in partial pressure of oxygen is in the oxygen-enriched atmosphere condition of 1~10Pa; evaporation thickness is the thinfilm protective coating of 600-800nm on the dielectric layer on the glass substrate of color plasma display; then thereon the using plasma spraying technology to deposit one deck unit are coverage rate again be 5% to 80% MgO stratum granulosum, the particle diameter of described MgO stratum granulosum is 30-500nm.
2. color plasma display according to claim 1 is characterized in that with the preparation method of MgO protective layer the unit are coverage rate of described MgO stratum granulosum is 5% to 40%, and particle diameter is 30-300nm.
3. color plasma display according to claim 1 is characterized in that with the preparation method of MgO protective layer the unit are coverage rate of described MgO stratum granulosum is 10% to 40%, and particle diameter is 80-300nm.
4. color plasma display according to claim 1 is characterized in that with the preparation method of MgO protective layer the unit are coverage rate of described MgO stratum granulosum is 10% to 30%, and particle diameter is 80-200nm.
5. color plasma display according to claim 1 is characterized in that with the preparation method of MgO protective layer the unit are coverage rate of described MgO stratum granulosum is 15% to 20%, and particle diameter is 100-150nm.
6. color plasma display according to claim 1 is characterized in that with the preparation method of MgO protective layer, and the unit are coverage rate of described MgO stratum granulosum is about 15 to 18%, and particle diameter is 100-150nm.
7. it is characterized in that with the preparation method of MgO protective layer that according to each described color plasma display among the aforesaid right requirement 1-6 preparation has ito transparent electrode, BUS electrode and dielectric layer on the described glass substrate.
8. require the preparation method of each described color plasma display according to aforesaid right, it is characterized in that described thinfilm protective coating is arranged in the prebasal plate of color plasma display with the MgO protective layer.
9. require the preparation method of each described color plasma display according to aforesaid right, it is characterized in that described thinfilm protective coating is made of MgO with the MgO protective layer.
CN2010106204682A 2010-09-30 2010-12-31 Method for preparing MgO protective layer for color plasma display panel (PDP) Pending CN102087943A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103065914A (en) * 2012-12-27 2013-04-24 电子科技大学 Protective layer structure of plasma display panel (PDP) front glass plate and preparation method thereof
CN103794434A (en) * 2011-12-31 2014-05-14 四川虹欧显示器件有限公司 Plasma display screen manufacturing method and plasma display screen manufactured by employing plasma display screen manufacturing method

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Publication number Priority date Publication date Assignee Title
CN101383255A (en) * 2007-09-03 2009-03-11 三星Sdi株式会社 Protective layer, its preparation method and plasma display panel comprising the protective layer
JP2009259433A (en) * 2008-04-11 2009-11-05 Hitachi Ltd Plasma display panel and its manufacturing method
US20100045573A1 (en) * 2006-10-20 2010-02-25 Masaharu Terauchi Plasma display panel and manufacturing method thereof
CN101681760A (en) * 2007-12-13 2010-03-24 松下电器产业株式会社 Plasma display panel

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US20100045573A1 (en) * 2006-10-20 2010-02-25 Masaharu Terauchi Plasma display panel and manufacturing method thereof
CN101383255A (en) * 2007-09-03 2009-03-11 三星Sdi株式会社 Protective layer, its preparation method and plasma display panel comprising the protective layer
CN101681760A (en) * 2007-12-13 2010-03-24 松下电器产业株式会社 Plasma display panel
JP2009259433A (en) * 2008-04-11 2009-11-05 Hitachi Ltd Plasma display panel and its manufacturing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103794434A (en) * 2011-12-31 2014-05-14 四川虹欧显示器件有限公司 Plasma display screen manufacturing method and plasma display screen manufactured by employing plasma display screen manufacturing method
CN103065914A (en) * 2012-12-27 2013-04-24 电子科技大学 Protective layer structure of plasma display panel (PDP) front glass plate and preparation method thereof

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Application publication date: 20110608