CN1983496A - Plasma display device - Google Patents

Plasma display device Download PDF

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Publication number
CN1983496A
CN1983496A CNA2006101688438A CN200610168843A CN1983496A CN 1983496 A CN1983496 A CN 1983496A CN A2006101688438 A CNA2006101688438 A CN A2006101688438A CN 200610168843 A CN200610168843 A CN 200610168843A CN 1983496 A CN1983496 A CN 1983496A
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CN
China
Prior art keywords
relaxation layer
plasma display
layer
display panel
electrode
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CNA2006101688438A
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Chinese (zh)
Inventor
金汞卓
裴胱培
权炯硕
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LG Electronics Inc
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LG Electronics Inc
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Publication of CN1983496A publication Critical patent/CN1983496A/en
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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
    • H01J11/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J11/44—Optical arrangements or shielding arrangements, e.g. filters, black matrices, light reflecting means or electromagnetic shielding means
    • 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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/205—Applying optical coatings or shielding coatings to the vessel of flat panel displays, e.g. applying filter layers, electromagnetic interference shielding layers, anti-reflection coatings or anti-glare coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20—Constructional details
    • H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J2211/44—Optical arrangements or shielding arrangements, e.g. filters or lenses
    • H01J2211/442—Light reflecting means; Anti-reflection means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20—Constructional details
    • H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J2211/44—Optical arrangements or shielding arrangements, e.g. filters or lenses
    • H01J2211/444—Means for improving contrast or colour purity, e.g. black matrix or light shielding means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20—Constructional details
    • H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J2211/44—Optical arrangements or shielding arrangements, e.g. filters or lenses
    • H01J2211/446—Electromagnetic shielding means; Antistatic means

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The present invention relates to a plasma display device. A reduction layer is directly formed on a front substrate of a panel. Accordingly, the manufacturing cost of the plasma display device can be saved, phenomena, such as Moire and double image, can be improved, a bright and dark room contrast ratio can be improved, and a sharper picture quality can be provided. Further, the reduction layer includes a conductive material. Accordingly, there are advantages in that EMI and NIR can be shielded, and an erroneous operation occurring when the plasma display device is driven can be prevented.

Description

Plasma display panel device
Technical field
The present invention relates to plasma display panel device, and more specifically say to relate to wherein on the front surface of panel, directly to form the relaxation layer (reduction layer) of one of them at least, save the plasma display panel device of the acutance of manufacturing cost and improvement panel thus with electromagnetic interference (EMI) function of shielding, near-infrared (NIR) function of shielding and black matrix functions.
Background technology
Generally speaking, Plasmia indicating panel is the excitation of plasma fluorescent material that wherein produces discharge and produce with at gas discharge the time when applying the electrode that voltage arranges in discharge space, shows the equipment of the image that comprises text and/or figure thus.The advantage of Plasmia indicating panel is that it can be manufactured to large scale, light, gentle thin, can provide the wide visual angle on all directions, and can realize full color and high brightness.
Film optical filter or glass filter are appended to the front surface of Plasmia indicating panel to realize the EMI function of shielding, the function of reflecting and the NIR function of shielding of minimizing exterior light.
If as mentioned above film optical filter or glass filter are appended to the front surface of panel, problem is because use the unit cost of expensive filter panel to increase, and because the front surface of filter and panel separates preset distance and efficient is reduced.
Summary of the invention
Therefore, the present invention is proposed to solve prior art problems.
Comprise that according to the plasma display panel device of the embodiment of the invention preceding substrate is with relative with preceding substrate and have a meron of a plurality of barrier ribs that are used for physically being divided in the discharge cell that wherein forms, first electrode and second electrode that form on the first surface of substrate before this plasma display device is included in, and the relaxation layer that on the second surface of preceding substrate, directly forms.
Relaxation layer preferably includes the one deck at least that forms from electric conducting material.Electric conducting material can comprise at least a of ITO, IZO, IZTO and silver (Ag).
In addition, relaxation layer can be formed by the metal material of lattice shape.This relaxation layer can be included in the black matrix that directly forms on the second surface, or comprises two or more layers of black layer.
This relaxation layer can have 10 to 250nm or 10 to 200nm thickness.
Relaxation layer can have smaller or equal to 4 Ω/m 2The sheet impedance and more than or equal to 35% transmissivity.
In addition, close adhesion can form on relaxation layer to the film optical filter of relaxation layer, or and the relaxation layer glass filter that separates preset distance on relaxation layer, form.One of the film optical filter that forms on relaxation layer and glass power can comprise the anti-reflection layer that is used to reduce outside reflection of light, are used for colored the adjustment and one of the colored colored key-course of revising and adhesive layer.
Plasma display panel device comprises preceding substrate according to another embodiment of the present invention, with relative with preceding substrate and have a meron of a plurality of barrier ribs that are used for physically being divided in wherein the discharge cell that forms, first electrode and second electrode that form on the first surface of substrate before this plasma display device is included in, at first relaxation layer that directly forms on the second surface of preceding substrate and form and second relaxation layer that on first relaxation layer, forms and form by black material by electric conducting material.
This black material is preferably overlapping with barrier rib.This electric conducting material can comprise at least a of ITO, IZO, IZTO and silver (Ag).
In addition, can grid or bar shape form second relaxation layer.This second relaxation layer can comprise electric conducting material.
In this case, electric conducting material can comprise at least a of copper (Cu), silver (Ag), aluminium (Al), zinc (Zn) and chromium (Cr).
Close adhesion can form on second relaxation layer to the film optical filter of second relaxation layer, or and second relaxation layer glass filter that separates specific range can on second relaxation layer, form.
Method according to the manufacturing plasma display panel device of further embodiment of this invention comprises step: form scan electrode and keep electrode on the first surface of substrate, in that directly coated with conductive material and sintering directly are coated in electric conducting material on the second surface of substrate on the second surface of substrate.
Can carry out on second surface the directly step of coated with conductive material by any one that uses spinning solution, the method for splashing, sputtering method and beam methods.
This method can further be included in the direct process black material of second surface, or is coated in the electric conducting material on the second surface, and the step of oven dry black material.
Description of drawings
Fig. 1 shows the view according to first embodiment of the structure of Plasmia indicating panel of the present invention;
Fig. 2 shows the perspective view according to first embodiment of the relaxation layer of Plasmia indicating panel of the present invention;
Fig. 3 shows the perspective view according to second embodiment of the relaxation layer of Plasmia indicating panel of the present invention;
Fig. 4 shows the perspective view according to the 3rd embodiment of the relaxation layer of Plasmia indicating panel of the present invention;
Fig. 5 shows the view according to second embodiment of the structure of Plasmia indicating panel of the present invention;
Fig. 6 shows the perspective view according to the 4th embodiment of the relaxation layer of Plasmia indicating panel of the present invention;
Fig. 7 shows the flow chart according to the embodiment of the method for manufacturing plasma display panel device of the present invention;
Fig. 8 shows the view of the arrangement of electrodes of Plasmia indicating panel;
Fig. 9 is divided into the view of embodiment that a plurality of sons field drives its method when showing wherein a frame of the image of Plasmia indicating panel; And
Figure 10 shows the embodiment with respect to the drive signal of the son of dividing a driving Plasmia indicating panel.
Embodiment
Specifically describe plasma display panel device of the present invention in conjunction with specific embodiment below with reference to the accompanying drawings.
But, should notice that plasma display panel device according to the present invention is not limited to following embodiment, but may be implemented in a variety of ways.
Fig. 1 shows the view according to first embodiment of the structure of Plasmia indicating panel of the present invention.
With reference to figure 1, comprise according to the Plasmia indicating panel of the embodiment of the invention wherein forming scan electrode parallel to each other 11 and keeping the preceding substrate 10 of electrode 12 and wherein form cross scan electrode 11 and keep the meron 20 of the addressing electrode 22 of electrode 12.Preceding substrate 10 and meron 20 are bonded together.
Scan electrode 11 and keep electrode 12 each comprise the transparency electrode that forms by indium tin oxide (ITO) usually, and by pile up (stack), or the bus electrode of the metal that piles up of Cr/Al/Cr formation such as silver (Ag) or chromium (Cr), Cr/Cu/Cr.This bus electrode forms on transparency electrode, and is used to reduce the voltage drop that is caused by the transparency electrode with high impedance.
Simultaneously, in Plasmia indicating panel of the present invention, scan electrode 11 and keep electrode 12 each can not only have the structure of wherein piling up transparency electrode and bus electrode, but only have bus electrode and do not have the structure of transparency electrode.The advantage of this structure is the manufacturing cost of having saved panel because do not use transparency electrode.Except above-mentioned listed material, the bus electrode that is used for this structure can be formed by multiple material, such as photosensitive material.
Scan electrode 11 and keep the transparency electrode of electrode 12 and bus electrode between form black matrix (BM).Should black matrix have the exterior light that substrate 10 outsides take place before being absorbed in and therefore reduce the light shield function of reflection of light, and have improve before the purity of substrate 10 and the function of contrast.
Black matrix can have is deceiving matrix with first of barrier rib 21 position overlapped formation, and the second black matrix that forms between bus electrode.Can in forming process, form the first black matrix and the second black matrix that are called as " black layer " or " black electrode layer " simultaneously, and therefore physically connect, or in forming process, not form simultaneously, thereby physically not connect.
Physically connect therein under the situation of the first black matrix and the second black matrix, they can use same material to form.But in the situation that the first black matrix and the second black matrix physically separate each other, they can use different materials to form therein.
Form scan electrode 11 therein and press dielectric layer 13 and protective layer 14 with preceding substrate 10 upper stratas of keeping electrode 12.Accumulation produces the charged particle of plasma on last dielectric layer 13.
Protective layer 14 is used to protect dielectric layer 13 not to be subjected to the influence of the charged particle that produces when gas discharge, and increases the radiation efficiency of secondary electron.This protective layer 14 can form by the mode of the material of deposition rate such as MgO on last dielectric layer 13.
Simultaneously, in meron 20, form addressing electrode 22.Form therein and form down dielectric layer 24 on the upper surface of meron 20 of addressing electrode 22 to cover addressing electrode 22.Following dielectric layer 24 can be used in this addressing electrode 22 of insulation.
On meron 20, form barrier rib 21.Between barrier rib 21, apply fluorescent material 23.
Each barrier rib 21 comprises vertical barrier rib 21a that is parallel to addressing electrode 22 and the transverse barriers bar 21b that intersects with addressing electrode 22.Barrier rib 21 is the dividing discharge unit physically, and can prevent that the ultraviolet ray of discharge generation and visible light from leaking into neighboring discharge cells.
Plasmia indicating panel of the present invention can not only have the structure of barrier rib 21 as shown in Figure 1, and has the structure of the barrier rib 21 of multiple shape.For example, Plasmia indicating panel of the present invention can have wherein the barrier rib structure that vertically barrier rib 21a and transverse barriers bar 21b have the differential-type of differing heights, wherein in the channel type barrier rib structure that forms the raceway groove that can be used as exhaust duct (exhaust passage) at least in one of them of vertically barrier rib 21a and transverse barriers bar 21b, wherein form empty empty type barrier rib structure etc. in one of them at least at vertically barrier rib 21a and transverse barriers bar 21b.
In differential-type barrier rib structure, preferably transverse barriers bar 21b has the height that is higher than vertical barrier rib 21a.Vertically barrier rib 21a can have the height that is higher than transverse barriers bar 21b.In channel type barrier rib structure or empty type barrier rib structure, preferably in transverse barriers bar 21b, form raceway groove or cavity.
Simultaneously, in an embodiment of the present invention, illustrate and described red (R) that on going together mutually, arranges, green (G) and indigo plant (B) discharge cell.Yet, can on different rows, arrange R, G and B discharge cell.For example, arrange triangular shaped layout R, G and the B discharge cell of discharge cell therein in the triangle mode, or with such as rectangle, pentagon and hexagonal multiple arrangements R, G and B discharge cell.
The spacing of each discharge cell can differently be set according to the color of sending from each discharge cell.In this case, the spacing of preferably sending the discharge cell of color (R) is equal to or less than the spacing of the discharge cell that sends color (G), and the spacing of sending the discharge cell of color (B) is equal to or less than the spacing of the discharge cell that sends color (G) and sends the spacing of the discharge cell of color (R).
Except R, G and B discharge cell, can form white (W) and/or yellow (Y) discharge cell in addition.
With the front panel facing surfaces of the Plasmia indicating panel of said structure, just, wherein form scan electrode 11 and keep on the surface of electrode 12 and directly form the relaxation layer 15 that electric conducting material is made.The relaxation layer 15 that directly forms on the front surface of substrate 10 before above-mentioned is used as EMI function of shielding, NIR function of shielding, prevents the function of external light reflection etc.Can on relaxation layer 15, further form film optical filter or glass filter.Mode by laminating method forms film optical filter on the plate in front, the distance that glass filter is then separately predetermined with Plasmia indicating panel.
Consider the efficient of the function that electrical characteristic and optical transmission cause, the thickness T of relaxation layer 15 is set in 10 to 250nm scope.In this case; assurance is from the light of the panel emission transmissivity of transmission glibly; with realize enough EMI shield effectivenesses by enough conductivity; consider that more preferably the electrical characteristic of relaxation layer 15 is provided with the thickness of relaxation layer 15 in 10 to 200nm scope, transmission and protective layer have the thickness of enough protection panels glibly to make light.
Following table has been listed the experimental result according to the transmissivity of the sheet impedance of the embodiment of the invention and relaxation layer.
Sheet impedance [Ω/m 2] Transmissivity [%]
20.00 92
12.00 91
6.10 90
4.00 88
1.80 85
1.00 75
0.80 67
0.70 63
0.65 60
0.60 57
0.56 54
0.50 51
0.47 48
0.43 45
0.40 42
0.36 39
0.33 35
0.31 33
0.28 30
0.26 27
Last tabular has gone out when the scope of the thickness T of the relaxation layer 15 empirical average value from 10 to 200nm the time.The highest impedance that preferably needs to shield the relaxation layer 15 of EMI or NIR is 4 Ω/m 2, and the minimum transmissivity of the relaxation layer 15 that needs of the light that sends from the panel inboard of transmission is 35%.
When the transmissivity of relaxation layer 15 increased, the brighteness ratio of panel increased.But if transmissivity surpasses 88%, the sheet impedance of relaxation layer 15 surpasses 4 Ω/m 2, cause and fully to realize EMI and NIR shielding.When the sheet impedance 15 of relaxation layer 15 reduced, the EMI of relaxation layer 15 and NIR function of shielding were improved.But, surpass 0.33 Ω/m as the chankings impedance 2, the transmissivity of relaxation layer 15 is no more than 35%, the feasible transmissivity that can not fully guarantee relaxation layer 15.Therefore, preferably the sheet impedance of relaxation layer 15 more than or equal to 4 Ω/m 2, and the transmissivity of relaxation layer 15 is more than or equal to 35%.Consider that more preferably sheet impedance and transmissivity form relaxation layer.
The sheet impedance that relaxation layer 15 is set is smaller or equal to 4 Ω/m 2Reason be that when relaxation layer 15 has adequate thickness T the EMI that produces in the Plasmia indicating panel is suitably shielded, and in relaxation layer because the electric current that EMI forms can easily drain in the ground.It can further improve EMI shield effectiveness and NIR shield effectiveness.
The transmissivity that relaxation layer 15 is set is when relaxation layer 15 has adequate thickness T more than or equal to 35% reason, can keeps the brightness of Plasmia indicating panel suitably and keep better bright chamber and darkroom contrast ratio.
Fig. 2 shows the perspective view according to first embodiment of the relaxation layer of Plasmia indicating panel of the present invention.
With reference to figure 2, the relaxation layer 15 with electric conducting material 15a and 15b is formed directly on the front surface of preceding substrate 10.
Electric conducting material can be formed by one of ITO, IZO, IZTO, silver (Ag), aluminium (Al), copper (Cu) and zinc (Zn).
Because comprise the relaxation layer 15 of electric conducting material 15a and 15b be formed directly into before on the front surface of substrate 10, can improve waviness phenomena that the difference of refractive index and reflectivity causes or wherein image seem overlapping dual image phenomenon.Therefore, realize distinct image (sharperimage) more.
Relaxation layer 15 before being formed directly on the front surface of substrate 10 can comprise one or more layers.Relaxation layer 15 comprises that in the situation of a layer, it can use electric conducting material therein, forms such as silver (Ag), aluminium (Al), copper (Cu) or zinc (Zn).
In addition, relaxation layer 15 comprises in several layers the situation therein, it can pass through the alternatively laminated transparent conductive material, for example, metal material such as ITO, IZO and IZTO and one of silver (Ag), aluminium (Al), copper (Cu) and zinc (Zn) forms, and maybe can form by one of above-mentioned metal material of lamination only.
At least once form as shown in Figure 2 relaxation layer 15 by coated with conductive material on preceding substrate 10.Form several times under the situation of relaxation layer 15 by the coated with conductive material therein, each layer can have identical thickness.
The relaxation layer 15 of Xing Chenging can minimize according to refractive index of each layer and the difference between the reflectivity as mentioned above, and therefore can improve waviness phenomena or dual image phenomenon.This relaxation layer 15 can prevent when driving Plasmia indicating panel, because the wavelength of Plasmia indicating panel is in close proximity to the contingent fault of wavelength of the remote controller of household electrical appliance, and can also shield the NIR that the inert gas such as Ne and Xe causes.
Fig. 3 shows the perspective view according to second embodiment of the relaxation layer of Plasmia indicating panel of the present invention.Fig. 3 shows the sectional view and the front view of Plasmia indicating panel.
As shown in Figure 3, relaxation layer 15c of the present invention can be formed by the copper with high conductivity (Cu) of grid form.
Relaxation layer 15c can have the one deck that forms with lattice shape by direct print copper (Cu) on the front surface of preceding substrate 1.At this moment, can use the metal material with high conductivity of Alloy instead of Copper (Cu), such as aluminium (Al), silver (Ag), chromium (Cr) or zinc (Zn).
As mentioned above, with the structure of lattice shape formation, and therefore can guarantee enough transmissivities according to the relaxation layer 15c of second embodiment of the invention.In other words, the metal material that has covering property of height (obscurity) therein by use, such as copper (Cu), directly forming on the front surface of preceding substrate 10 under the situation of relaxation layer, has the hole because use, such as the structure of lattice shape, can keep the brightness of Plasmia indicating panel and the contrast in bright chamber of assurance and darkroom.
Relaxation layer 15c comprises the grid cell 150 that forms with lattice shape, with the effective coverage that increases panel (just, the part of actual displayed image wherein) transmissivity, thus and be formed on the ground unit 151 that increases the ground connection power of relaxation layer 15c in the inactive area of panel.
Ground unit 151 can only form on the side of inactive area or on the both sides at wireless zone.Alternatively, ground unit 151 can be only part in the one or both sides of inactive area form.Alternatively, ground unit 151 can only form in the corner of relaxation layer.
The advantage that constitutes the copper (Cu) of relaxation layer 15c is the EMI that shielding that it can be bigger is exported in the panel, and shortcoming is that it can not shield the NIR that is caused by the inert gas that is injected into Plasmia indicating panel.Because this needs further to form film optical filter or the glass filter that comprises the NIR screen on relaxation layer 15c.
Fig. 4 shows the perspective view according to the 3rd embodiment of the relaxation layer of Plasmia indicating panel of the present invention.
With reference to figure 4, in the 3rd embodiment according to the relaxation layer of Plasmia indicating panel of the present invention, before the relaxation layer 15 that is formed by electric conducting material is formed directly on the front surface of substrate 10, and black material 16 directly is formed on the relaxation layer 15 with bar shape.
Simultaneously, black material 16 shown in Figure 4 is formed directly on the relaxation layer 15.But black material 16 can be formed directly on the front surface of preceding substrate 10, and relaxation layer 15 is formed on the black material 16.Alternatively, only black material 16 is formed directly on the front surface of preceding substrate 10, and another relaxation layer is formed on the black material 16.
On-chip Plasmia indicating panel can reduce outside reflection of incident light to the maximum possible degree before wherein black material was formed on as mentioned above, and therefore can improve bright chamber and darkroom contrast.Preferably, the black material 16 of formation does not cover discharge cell, to keep the brightness of panel.In other words, preferably, black material 16 and barrier rib 21 are overlapping.In addition, black material 16 is formed on vertical barrier rib 21a and the transverse barriers bar 21b, as shown in Figure 4.
Fig. 5 shows the view according to second embodiment of the structure of Plasmia indicating panel of the present invention.
With reference to figure 5, according to the Plasmia indicating panel of second embodiment of the invention comprise be formed directly into before relaxation layer 15 on the front surface of substrate 10 and the filter 30 that on relaxation layer 15, forms.
The close adhesion that can comprise this filter 30 arrives the film optical filter of relaxation layer 15 or separates the glass filter of specific range with relaxation layer 15.
Film optical filter or the glass filter that forms on relaxation layer 15 comprises the anti-reflection layer that is used to reduce outside reflection of light as mentioned above, be used for the color key-course of color adjustment and color correction and adhesive layer at least one of them.This film optical filter or glass filter can further comprise NIR screen and external light screening layer.
Anti-reflection layer has projection and the depression that forms on the outer surface of filter 30, make image know and reduce the light of external reflection more by shielding ultraviolet rays.
This NIR screen is used to shield the NIR from the panel radiation, makes it possible to normal delivery and uses infrared ray, such as the signal of remote controller transmission.
Generally speaking, external light source indoor or outdoors with account on exist.The external light screening layer is used for shielding effectively exterior light, makes that thus the black image of panel is darker.
The color key-course is used to increase the colorimetric purity of image and the tone (tone) that control is suitable for the image of this image.
Form adhesive layer between each layer that in filter 16, comprises.Each layer and filter 30 is installed securely in the front of relaxation layer 15.
Fig. 6 shows the perspective view according to the 4th embodiment of the relaxation layer of Plasmia indicating panel of the present invention.
With reference to figure 6, Plasmia indicating panel according to the present invention comprises and wherein forms scan electrode parallel to each other 110 and keep the preceding substrate 100 of electrode 120 and wherein form with scan electrode 110 and keep the meron 200 of electrode 120 address electrodes intersecting 220.Substrate 100 and meron 200 are bonded together before being somebody's turn to do.Hereinafter, for fear of redundancy structure with the identical Plasmia indicating panel shown in Figure 6 of Fig. 1 will not described.
With reference to figure 6, first relaxation layer 150 that directly forms on the front surface of substrate 100 before Plasmia indicating panel of the present invention is included in and form by electric conducting material and second relaxation layer 160 that on first relaxation layer 150, forms and form by black material.
First relaxation layer 150 can use one of ITO, IZO, IZTO and silver (Ag) to form, and it can fully guarantee transmissivity and have good electrical conductivity.In this case, can improve EMI and NIR function of shielding.
Consider that because the efficient and the optical transmission of the function that electrical characteristic causes, the thickness T that forms first relaxation layer 150 is 10 to 250nm.When the thickness of first relaxation layer 150 is 10 to 200nm or more hour, obtain enough sheet impedance and transmissivity.In this case, be formed directly into before first relaxation layer 150 on the front surface of substrate 100 can have smaller or equal to 4 Ω/m 2The sheet impedance and more than or equal to 35% improved transmissivity.
The sheet impedance that first relaxation layer 150 is set is smaller or equal to 4 Ω/m 2Reason be that when first relaxation layer 150 has adequate thickness T the EMI that produces in the Plasmia indicating panel is suitably shielded, and in relaxation layer because the electric current that EMI forms can easily bleed in ground.
Therefore, it can effectively improve EMI shield effectiveness and NIR shield effectiveness.
The transmissivity that first relaxation layer 150 is set is when relaxation layer 15 has adequate thickness T more than or equal to 35% reason, can keep the brightness of Plasmia indicating panel suitably and keep better bright and darkroom contrast.
Relaxation layer 150 before being formed directly on the front surface of substrate 100 can comprise one or more layers.Relaxation layer 150 comprises under the situation of one deck therein, and it uses the electric conducting material such as silver (Ag), aluminium (Al), copper (Cu) or zinc (Zn) to form.
In addition, which floor situation relaxation layer 150 comprise under therein, it can pass through the alternatively laminated transparent conductive material, for example, metal material such as ITO, IZO and IZTO and one of silver (Ag), aluminium (Al), copper (Cu) and zinc (Zn) forms, or it can form by one of above-mentioned metal material of lamination only.
At least once form as relaxation layer 150 by coated with conductive material on preceding substrate 100.Form several times under the situation of relaxation layer 150 by the coated with conductive material therein, each layer can have identical thickness.
The relaxation layer 150 of Xing Chenging can minimize according to refractive index of each layer and the difference between the reflectivity as mentioned above, and therefore can improve waviness phenomena or dual image phenomenon.This relaxation layer 150 can prevent when driving Plasmia indicating panel, because the wavelength of Plasmia indicating panel is in close proximity to the contingent fault of wavelength of the remote controller of household electrical appliance, and can also shielding ratio such as the NIR that causes of the inert gas of Ne and Xe.
Second relaxation layer 160 that is formed by black material is formed directly on first relaxation layer 150.Second relaxation layer 160 can comprise black material and electric conducting material, such as copper (Cu), silver (Ag), aluminium (Al), zinc (Zn) and chromium (Cr).In this case, can utilize black material to improve the effect that prevents external light reflection, and utilize this electric conducting material further to improve the EMI shield effectiveness.
Second relaxation layer 160 can form and it is overlapping with vertical barrier rib 210a and transverse barriers bar 210b with lattice shape, as shown in Figure 6.Alternatively, can form second relaxation layer 160 with bar shape, and itself and vertically any one of barrier rib 210a and transverse barriers bar 210b is overlapping.
Preferably, constitute width range from 10 to the 30 μ m of the black material of second relaxation layer.In this case, panel has enough duty ratios.Therefore, can realize having the picture rich in detail of better brightness, and reduce because the sheet impedance of the panel that thickness causes.Thus, increase conductivity and improvement EMI shield effectiveness.
Fig. 7 shows the flow chart according to the embodiment of the method for manufacturing plasma display panel device of the present invention.
With reference to figure 7, can form step S1, coating step S2 and sintering step S3 forms Plasmia indicating panel of the present invention by electrode.
Form among the step S1 at electrode, the mode by sensitization method, method for printing screen etc. forms scan electrode and keeps electrode on the second surface of preceding substrate.
In coating step S2, the electric conducting material that is used to form relaxation layer is by on the first surface of substrate before directly being coated in.The method of coated with conductive material can comprise by using one of spinning solution, the method for splashing and sputtering method to apply the method for the electric conducting material of coating type by the sputter device on the first surface of preceding substrate as mentioned above.
When forming this relaxation layer, this method seldom produces bubble, and can improve the uniformity of relaxation layer significantly.
The advantage of this spinning solution is that it can improve the uniformity of relaxation layer naturally.On its technology, this spinning solution be also advantageous in that it can significantly reduce error rate unlike existing filter, and can significantly improve output.
Specifically, the advantage of sputtering method is because can freely control the coated weight of electric conducting material, the thickness that this sputtering method can key-course.
In sputtering method, the test sample book such as silver (Ag) or ITO is set, and preceding substrate is set to relative with test sample book in having the equipment that splashes of vacuum state.In this state, if inject argon (Ar) gas and apply voltage, then argon (Ar) gas becomes plasmoid, and wherein argon (Ar) gas is broken down into argon (Ar) ion and electronics.Argon (Ar) ion collision silver (Ag) or ITO test sample book make the atomic transition of silver (Ag) or ITO also directly be attached to the second surface of preceding substrate, thereby form relaxation layer.For the electric conducting material such as silver (Ag) or ITO has EMI shield effectiveness and NIR shield effectiveness, can carry out splashes several times handles the relaxation layer that has multilayer with formation.
After the coated with conductive material, add the process of direct process black material and the process of the black material that oven dry is printed.
This printing process can adopt the thick film screen printing method, straight forming method etc.In printing process, use mask on preceding substrate, to apply the paste of black material with bar shaped or lattice shape.
The black material of this coating is dried in drying course.
In sintering step S3, the electric conducting material that sintering applies makes this electric conducting material suitably connect and harden to the front surface of Plasmia indicating panel.
This sintering method can comprise thermal sintering, ultraviolet sintering and laser sintered etc.
This thermal sintering method is carried out on whole Plasmia indicating panel in the thermal sintering stove.This laser sintering processes is suitable for the part that sintering partly will sintering.By using the ultraviolet equipment of emission, the heat of ultraviolet ray thereon by radiation has on the part of effect carries out the ultraviolet sintering method, and therefore is suitable for the surface of sintering plasma display floater.Therefore, more preferably, the ultraviolet sintering method is used to the sintering step S3 of relaxation layer of the present invention.
Fig. 8 shows the view of the arrangement of electrodes of Plasmia indicating panel.
As shown in Figure 8, a plurality of discharge cells that constitute Plasmia indicating panel preferably with matrix shape lay respectively at scanning electrode wire Y1 to Ym with keep electrode wires Z1 to Zm, and address electrode lines X1 is to the infall of Xn.Scanning electrode wire Y1 is sequentially driven to Ym, is driven to Zm and keep electrode wires Z1 publicly.And address electrode lines X1 to Xn by being divided into odd-numbered line and even number line drives.
Arrangement of electrodes as shown in Figure 8 is the embodiment according to the arrangement of electrodes of Plasmia indicating panel of the present invention, and therefore the invention is not restricted to the arrangement of electrodes and the driving method of Plasmia indicating panel as shown in Figure 3.For example, can adopt and wherein drive two scanning (dual scan) or double scanning (double scan) methods of per two scanning electrode wire Y1 simultaneously to Ym.
In this case, two scan methods are that the supposition Plasmia indicating panel is divided into two zones, and just, last zone and lower area drive a scanning electrode wire that belongs to the zone and the method that belongs to a scanning electrode wire of lower area simultaneously.The double scanning method is the method that drives two continuous each other scanning electrode wires simultaneously.
Fig. 9 show wherein by the time be divided into the embodiment of method of a frame that a plurality of sons field drives the image of Plasmia indicating panel.
With reference to figure 9, by the time be divided into eight son SF1 ..., SF8 drives unit frame, with the gray scale of represent images.Son SF1 ..., each of SF8 be divided into reset cycle (not shown), addressing period A1 ..., A8 and keep cycle S1 ..., S8.
At each addressing period A1 ..., among the A8, data-signal is applied to addressing electrode X, and will be applied to scan electrode Y in proper order corresponding to the scanning impulse of data-signal.Keep cycle S1 at each ..., among the S8, will keep pulse and alternately be affixed by scan electrode Y and keep electrode Z, make at addressing period A1 ..., produce in the discharge cell of selecting among the A8 and keep discharge.
The cycle of the keeping S1 that occupies in the brightness of Plasmia indicating panel and the unit frame ..., the number of times of keeping discharge among the S8 is directly proportional.Under the situation with a frame of 8 sons and an image of 256 gray level representation formation, each height field is assigned the pulse of keeping of different numbers therein, and ratio is 1,2,4,8,16,32,64 and 128.Selectable, in order to obtain the brightness of 133 gray scales, can carry out by selected cell during son 1 cycle, son 3 cycle and son 8 cycle and to keep discharge.
Simultaneously, according to automated power control (APC) step, the number of times of keeping discharge of distributing to each son field can change according to the weight of son field.In other words, with reference to figure 9 example that a frame wherein is divided into eight sons is described.But, the invention is not restricted to above-mentioned example, but the sub-number of fields order that forms a frame can change in many ways according to design specification.For example, can drive Plasmia indicating panel such as 12 or 16 son fields by a frame being divided into eight sons or more or eight sons or still less.
Consider gamma characteristic or panel characteristics, can change the number of times of keeping discharge of distributing to each son field in many ways.For example, the gray scale of distributing to son 4 can be reduced to 6 from 8, and the gray scale of distributing to son 6 can rise to 34 from 32.
Figure 10 shows the waveform with respect to the embodiment of the drive signal of the driving Plasmia indicating panel of the son field of dividing.
With reference to Figure 10, son SF is divided into the reset cycle of the electric charge in the reset discharge unit wherein, wherein select on the discharge cell of display image on it and its not addressing period of the discharge cell of display image, wherein in addressing period, select and keep discharge with producing in the discharge cell of display image on it, thereby produce keeping the cycle of image.Reset cycle is divided into the cycle of foundation once more and removes the cycle.
In the cycle of setting up, the signal of setting up that rises gradually is applied to scan electrode Y, make in whole discharge cell, to produce and set up discharge.Therefore, accumulation wall electric charge on discharge cell.In the cycle of removing, the signal of removing that descends gradually is applied to scan electrode Y, make in whole discharge cell, to produce weak erasure discharge.Therefore, the stable wall electric charge that produces the address discharge degree is evenly stayed in the discharge cell.
In addition, before the reset cycle, there is the pre-reset cycle.In the pre-reset cycle, help to form enough wall electric charges, and positive voltage is applied to keeps electrode Z, before the reset cycle, use the waveform that the magnitude of voltage of scan electrode Y wherein descends gradually simultaneously, thereby produce pre-reset discharge.Consider to drive allowance, the preferably pre-reset cycle only exists in first a son SF1.
In addressing period, when the sweep signal order is applied to scan electrode Y, will be applied to addressing electrode X with the synchronous positive data-signal of the sweep signal that is applied to scan electrode Y.Voltage difference between sweep signal and data-signal with in discharge cell, produce address discharge mutually at the electric charge that produces during the reset cycle in addition.Therefore, in discharge cell, be formed for keeping the wall electric charge of discharge.
In the cycle of keeping, will keep signal and alternately be applied to scan electrode Y and keep electrode Z.No matter when apply and keep signal, in the discharge cell of selecting by address discharge, produce and keep discharge, just, show discharge.
Simultaneously, waveform shown in Figure 10 is the embodiment according to the signal of the driving Plasmia indicating panel of the embodiment of the invention.The invention is not restricted to waveform shown in Figure 10.For example, can omit the reset cycle from least one of a plurality of son that constitutes a frame, this reset cycle can be only exists in first son, and can omit the pre-reset cycle.
If suitable, the polarity of each drive signal shown in Figure 10 can be different with voltage level.Finish keep discharge after, the erase signal that will be used to wipe the wall electric charge is applied to keeps electrode Z.In addition, it is possible will keeping wherein that signal only is applied to scan electrode Y and keeps that single sustain that electrode Z keeps discharge with generation drives.
Though described the present invention about the current exemplary embodiment that is thought of as reality, understanding the invention is not restricted to disclosed embodiment, but opposite, is intended to cover multiple modification and the equivalent arrangements that comprises in the spirit and scope of claims.

Claims (10)

1. plasma display panel device, it comprises preceding substrate, with relative with preceding substrate and have the meron of a plurality of barrier ribs that are used for physically being divided in the discharge cell that wherein forms, this plasma display device comprises:
First electrode that on the first surface of preceding substrate, forms and second electrode, and
The relaxation layer that on the second surface of preceding substrate, directly forms.
2. plasma display panel device as claimed in claim 1, wherein, this relaxation layer comprises the one deck at least that is formed by electric conducting material.
3. plasma display panel device as claimed in claim 2, wherein, this electric conducting material comprises at least a of ITO, IZO, IZTO and silver (Ag).
4. plasma display panel device as claimed in claim 1, wherein, this relaxation layer is formed by the metal material of lattice shape.
5. plasma display panel device as claimed in claim 1, wherein, this relaxation layer is included in the black layer that directly forms on the second surface, or comprises two or more layers of black layer.
6. plasma display panel device as claimed in claim 1, wherein, this relaxation layer has 10 to 250nm thickness.
7. plasma display panel device as claimed in claim 1, wherein, this relaxation layer has 10 to 200nm thickness.
8. plasma display panel device as claimed in claim 1, wherein, this relaxation layer has smaller or equal to 4 Ω/m 2Sheet stop and more than or equal to 35% transmissivity.
9. plasma display panel device as claimed in claim 1, wherein, the film optical filter that closely is adhered to relaxation layer can form on relaxation layer, or forms on relaxation layer with glass filter that relaxation layer separates preset distance.
10. plasma display panel device as claimed in claim 1, wherein, one of the film optical filter that forms on relaxation layer and glass filter comprise one of the anti-reflection layer that is used to reduce outside reflection of light, the color key-course that is used for color adjustment and color correction and adhesive layer.
CNA2006101688438A 2005-12-12 2006-12-12 Plasma display device Pending CN1983496A (en)

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KR1020050121868A KR100755308B1 (en) 2005-12-12 2005-12-12 Plasma Display Device
KR1020050121868 2005-12-12
KR1020060111917 2006-11-13

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