CN101409196A - Plasma display panel - Google Patents

Abstract

A plasma display board of one embodiment of the invention includes: a front substrate, a rear substrate in contraposition with the front substrate, a barrier between the front substrate and the rear substrate for dividing a discharge string, wherein, the discharge string includes a first discharging string and a second discharging string, the size of the second discharging string is larger than the size of the first discharging string, and the second discharging string is configured at the periphery of the first discharging string. A plasma display board of another embodiment of the invention includes: a front substrate configured with scanning electrodes and sustain electrodes in mutual juxtaposition; a rear substrate configured with addressing electrodes intersected with the scanning electrodes and sustain electrodes; a barrier between the front substrate and the rear substrate for dividing a discharge string; and green, red and blue luminescence body layers configured in the discharge string. By setting that the transversal width of the discharging string configured in the virtual region is larger than that of the discharging string configured in the effective region, the plasma display board of one embodiment of the invention can homogenize the phosphor layer thickness in the effective region, thereby having the effect for improving image quality.

Description

Plasma display panel

Technical field

The present invention relates to a kind of plasma display panel.

Background technology

In plasma display panel, form luminescent coating in the discharge string (Cell) by the barrier division, form a plurality of electrodes (Electrode) simultaneously.Provide drive signal to plasma panel electrode, then, produce discharge according to the drive signal that provides in the discharge string.Wherein, when producing discharge by drive signal in the discharge string, the discharge gas that charges in the discharge string discharges vacuum ultraviolet (VacuumUltravioletrays), and this vacuum ultraviolet makes the light-emitting phosphor that is formed in the discharge string, thereby produces visible light.By this visible light, show image on the picture of plasma display panel.

Summary of the invention

Goal of the invention: the objective of the invention is to, the transverse width that is configured in the discharge string of virtual region by increasing is provided, the uniform plasma display panel of the thickness of phosphor layer in the effective coverage.

Technical scheme: the plasma display panel of the present invention's one example comprises front substrate, back substrate with the front substrate arranged opposite, barrier for dividing discharge string and be configured in the green of discharge string between substrate and the back substrate in front, redness and blue phosphor layers, discharge string comprises along direction the 1st discharge string and the 2nd discharge string adjacent to each other that forms identical luminescent coating, the size of the 2nd discharge string is bigger than the size of the 1st discharge string, and the 2nd discharge string is configured in the periphery of the 1st discharge string.

And the 1st discharge string is configured in the effective coverage, and the 2nd discharge string is configured in the virtual region of the periphery of effective coverage.

And, the scan electrode that front substrate configuration forms mutually side by side and keep electrode, with scan electrode and keep at least one direction side by side in the middle of the electrode, the 2nd discharge string length can be longer than the 1st discharge string length.

And front substrate forms the scan electrode that forms side by side mutually and keeps electrode, with scan electrode and keep on the direction side by side in the middle of the electrode, spacing between any two the 2nd discharge string is littler than spacing between any two the 1st discharge string.

And, the configurable long leg position of the 2nd discharge string at virtual region.

And, the plasma display panel of another example of the present invention comprises: mutual scan electrode side by side of configuration and the front substrate of keeping electrode, configuration and scan electrode and keep the back substrate of the addressing electrode of electrode crossing, barrier for dividing discharge string and be configured in the green of discharge string between substrate and the back substrate in front, redness and blue phosphor layers, effective coverage (Activearea) configuration the 1st discharge string, along with scan electrode and keep electrode direction side by side and be configured in configuration the 2nd discharge string in the 1st virtual region (FirstDummyarea) of periphery, effective coverage, along being configured in the 2nd virtual region (SecondDummyarea) configuration the 3rd discharge string of periphery, effective coverage with scan electrode and the direction of keeping electrode crossing, the 1st, 2, the luminescent coating that the configuration of 3 discharge string is identical, the size of the 1st discharge string and the 2nd discharge string big or small identical, the size of the 3rd discharge string is bigger than the size of the 1st discharge string and the 2nd discharge string.

And with scan electrode and keep at least one direction side by side in the middle of the electrode, the 3rd discharge string length can be longer than the 1st discharge string and the 2nd discharge string length.

And with scan electrode and keep at least one direction side by side in the middle of the electrode, spacing is littler than spacing between any two l discharge string and the 2nd discharge string between any two the 3rd discharge string.

Beneficial effect: the plasma display panel of the present invention's one example, the transverse width of the discharge string by will being configured in virtual region is made as, transverse width than the discharge string that is configured in the effective coverage is bigger, but the thickness of phosphor layer of homogenizing effective coverage has the effect that improves image quality.

Description of drawings

Fig. 1 is the picture of structure of introducing the plasma display panel of the present invention's one example.

Fig. 2 is a picture of introducing a scan electrode and an example of the structure of keeping electrode.

Fig. 3 is a picture of introducing effective coverage and virtual region.

Fig. 4 and Fig. 5 introduce the l discharge string of plasma display panel of the present invention's one example and the picture of the 2nd discharge string.

Fig. 6 a and Fig. 6 b are the picture of introducing the coating method of fluorophor.

Fig. 7 a and Fig. 7 b are the picture of introducing another example of the 2nd discharge string.

Fig. 8 operates the picture of an example with the plasma display panel of introducing the present invention's one example.

Embodiment

Below, the additional picture of reference is specifically introduced the plasma display panel of the present invention's one example.

Figure l is the picture of structure of introducing the plasma display panel of the present invention's one example.

Analysis chart l, the plasma display panel 100 of the present invention's one example can comprise configuration scan electrode 102 side by side, Y and keep electrode 103, front substrate 101 Hes of Z, with front substrate 101 arranged opposite, configuration simultaneously is with aforementioned scan electrode 102 and keep the back substrate 111 of electrode 103 address electrodes intersecting 113.

Can be on scan electrode 102 and the top of keeping electrode 103, configuration makes scan electrode 102 and keeps the upper dielectric layer 104 of electrode 103 insulation.

Can form the protective layer 105 of facilitation discharging condition on the top of upper dielectric layer 104.This protective layer 105 can comprise the high material of secondary electron release coefficient, for example magnesium oxide (MgO) material.

And, configured electrodes on the back substrate 111, for example addressing electrode 113, can form on the back substrate 111 of X and cover addressing electrode 113 at this configuration addressing electrode 113, and make the lower dielectric layer 115 of addressing electrode 113 insulation.

Simultaneously, the barrier 112 that the dividing discharge space is a discharge string can be formed at the top of lower dielectric layer 115.By this barrier 112, in front substrate 101 and back substrate 111 between configuration green (Green:G), blue (Blue:B) discharge string.And except red (R), green (G) outside blue (B) discharge string, can also be equipped with white (White:W) or yellow (Yellow:Y) discharge string again.

Charged in the discharge string by barrier 112 divisions and comprised xenon (Xe), the discharge gas of neon (Ne) etc.

Simultaneously, discharge the luminescent coating 114 of the visible light of display image in the time of can in the discharge string of dividing, forming address discharge by barrier 112.For example, the 1st luminescent coating that discharges red (Red:R) light be can form, blue (Blue, B) the 3rd luminescent coating of the 2nd luminescent coating of light and green (Green:G) light of release discharged.And except red (R), green (G) outside blue (B) light, can also dispose other luminescent coatings that discharge white (White:W) or yellow (Yellow:Y) light.

And, red (R), luminescent coating 114 thickness in the middle of green (G) and blue (B) discharge string in any discharge string can be different with other discharge string.For example, the luminescent coating of green (G) discharge string, i.e. luminescent coating in the 3rd luminescent coating or blueness (B) discharge string, promptly promptly the thickness of the 1st luminescent coating is thicker than the luminescent coating of red (R) discharge string for the thickness of the 2nd luminescent coating.Wherein, the thickness of the 3rd luminescent coating can be identical or different with the 2nd thickness of phosphor layer reality.

And, red (R), the width of green (G) and blue (B) discharge string can be actual identical, can be with red (R), the width of the more than one discharge string in the middle of green (G) and blue (B) discharge string is made as different with other discharge string width.For example, can be made as the width minimum of redness (R) discharge string, the width of green (G) and blue (B) discharge string is greater than the width of red (R) discharge string.At this, the width of green (G) discharge string can be identical or different with the width reality of blue (B) discharge string.Then, can improve the photo dazzle color temperature characteristic that is embodied.

And, only show among Fig. 1 that barrier 112 is located at the example of back substrate 111, but barrier 112 can be located on any substrate in the middle of front substrate 101 or the back substrate 111.

And, only show that lower dielectric layer 115 and upper dielectric layer 104 are respectively the example of a layer (Layer) in more than introducing, but at least one can be formed in the middle of lower dielectric layer 115 or the upper dielectric layer 104 by a plurality of layers.

And, be configured in the width or the thickness practical stability of the addressing electrode 113 on the back substrate 111, but the width of discharge string inside or thickness, can be different with the width or the thickness of discharge string outside.For example, the width of discharge string inside or thickness are wideer or thicker than discharge string outside.

Fig. 2 is a picture of introducing a scan electrode and an example of the structure of keeping electrode.

Analysis chart 2, scan electrode 102 and keep electrode 103 and can have multilayer (Multilayer) structure respectively.For example, scan electrode 102 and keep electrode 103 and can comprise transparency electrode 102a, 103a and bus electrode 102b, 103b.

At this, bus electrode 102b, 103b can comprise actual opaque electrical conductance material, for example, silver (Ag), at least one in the middle of the gold (Au), aluminium (Al), transparency electrode 102a, 103a can comprise the material of actual transparency, such as indium tin oxide (ITO) material.

Simultaneously, scan electrode 102 and keep electrode 103 and comprise bus electrode 102b, 103b and transparency electrode 102a are during 103a, in order to prevent bus electrode 102b, the external light reflection that 103b causes is at transparency electrode 102a, 103a and bus electrode 102b comprise black layer 120,130 again between the 103b.

Simultaneously, also can and keep omission transparency electrode 102a in the electrode 103,103a at scan electrode 102.That is, scan electrode 102 can be to omit transparency electrode 102a, the ITO-Less electrode of 103a with keeping electrode 103.

Fig. 3 is a picture of introducing effective coverage and virtual region.

Analysis chart 3, plasma display panel can comprise the effective coverage (ActiveArea) 300 of show image and not show the virtual region (DummyArea) 310 of contributing for image.At this, thus the zone that effective coverage 300 when being driving certain visible light show image takes place, the concrete introduction of its structure such as Fig. 1.

Virtual region 310 configurable in the effective coverage 300 periphery.This virtual region 310 is to establish in order to ensure the driving stability of the structural stability of effective coverage 300 or effective coverage.

Fig. 4 and Fig. 5 introduce the 1st discharge string of plasma display panel of the present invention's one example and the picture of the 2nd discharge string.

At first, analysis chart 4, then the A part of enlarged drawing 3 shows the 1st discharge string 410 and the 2nd discharge string 420.

The effective coverage can comprise the 1st discharge string 410, and virtual region can comprise the 2nd discharge string 420.

At this, the size of the 2nd discharge string 420 that is configured in virtual region is bigger than the 1st discharge string 410 that is configured in the effective coverage.

Simultaneously, the 2nd discharge string 420 width w2 can be bigger than the 1st discharge string 410 width w1.

And because the 2nd discharge string 420 width w2 are bigger than the 1st discharge string 410 width w1, spacing g2 can be littler than spacing g1 between the 1st discharge string between the 2nd discharge string.That is to say, be configured in barrier 440 width between the 2nd discharge string 420, can be littler than barrier 430 width that are configured between the 1st discharge string 410.

So, the 2nd discharge string 420 is made as than the 1st discharge string 410 bigger reasons is, in the coating process of fluorophor, before effective coverage coating fluorophor, evenly apply the required clearance spaces deficiency of fluorophor, therefore the string of fluorophor may appear not applying in the effective coverage, or the uneven phenomenon of the fluorescence scale of construction of coating in each string.

Therefore, need guarantee the space of in effective coverage homogenizing fluorophor coating amount.

Thus, wideer by the 2nd discharge string width is made as than the 1st discharge string width, after the fluorophor that coating is fully measured in virtual region, in the effective coverage, apply fluorophor, therefore can evenly apply fluorophor.

Further specifically introduce this coating process of fluorophor among Fig. 6 a and Fig. 6 b.

Afterwards, analysis chart 5, the B part of enlarged drawing 3 then, configurations shown is in the discharge string at the minor face position of virtual region.

Being configured in the discharge string 510 at the minor face position of virtual region, can not be the 2nd discharge string 420 of the long leg position that is configured in virtual region introduced among Fig. 4.That is, be configured in the transverse width w3 of discharge string 510 at the minor face position of virtual region, needn't reach the 2nd discharge string 420 width w2 that are configured in the long leg position.

This is because the coating of fluorophor is that the short side direction along substrate carries out, so the minor face position of virtual region does not need fully to apply the required space of fluorophor.Therefore, the discharge string 510 width w3 that disposed needn't be bigger than the 1st discharge string 410 width w1 of effective coverage.

Therefore, be configured in the size of discharge string 510 at the minor face position of virtual region, can be with the 1st discharge string 410 that is configured in the effective coverage big or small identical

Fig. 6 a to Fig. 6 b is a picture of introducing the coating method of fluorophor.

At first, analysis chart 6a has then shown body coating method of fluorescent.

Luminescent coating can form by preparation (Dispensing) method.For example, device for formulating 600 is formulated in cream (Paste) shape or slurry (Slurry) shape fluorescent material in the discharge string 620 of being divided by barrier by nozzle (Nozzle) 610, forms luminescent coating by drying or firing process then.

Simultaneously, more than in the operation of coating paste or pulpous state fluorescent material, fluorescent material may be inhomogeneous in the amount of nozzle 610 preparations.Therefore, the thickness of phosphor layer that is formulated into the effective coverage is understood inhomogeneous.

Shown in Fig. 6 b, this coating process of concrete analysis fluorophor.

Configuration engages the sealant (SealLayer does not show among the figure) of front substrate (not having among the figure to show) and back substrate 660, flows into discharge string inside, configurable SBR (SealBarrierRib) 630 in order to prevent this sealant.

In the fluorophor coating process,, paste protective tapes 640 on the top of SBR 630 in order to prevent adhesive fluorescence body on the SBR 630.

In the coating process of fluorophor; nozzle 610 is via the P1 fulcrum top of configuration SBR 630 and protective tapes 640; via do not have SBR 630 have only protective tapes 640 the P2 fulcrum and; the P3 fulcrum that does not have protective tapes 640; the P4 fulcrum of the barrier 650 of the discharge string of configuration division virtual region carries out along the effective coverage of virtual region and display image.

In this process, in the P1 fulcrum, formed SBR 630 and protective tapes 640 simultaneously, so spacing d1 is very short between P1 fulcrum and the nozzle 610, the fluorescent material that nozzle 610 is discharged can not fully be discharged.Afterwards, between P2 fulcrum and the P3 fulcrum, SBR 630 and protective tapes 640 are not set successively, spacing d2 between nozzle and P2 and the P3 fulcrum, d3 can sharply widen, so the fluorescent material discharge rate that does not have in the P1 fulcrum to discharge can sharply increase.

And, directly arrive the P4 fulcrum that forms virtual barrier 650, therefore can repeat fluorescent material discharges uneven phenomenon.

So, the coating amount of fluorophor is inhomogeneous, therefore needs the clearance spaces of homogenizing fluorophor coating amount.

Therefore, wideer than the 1st discharge string width as Fig. 4 introduction by the 2nd discharge string width is made as, can be after virtual region fully carry out the fluorophor coating, the fluorophor coating of stabilisation effective coverage.

Fig. 7 a to Fig. 7 b is a picture of introducing another example of the 2nd discharge string.

Be configured in the 2nd discharge string of virtual region, can merge the discharge string more than 2 of adjacency.

At first, shown in Fig. 7 a, be configured in the 2nd discharge string 710 of virtual region, can merge 2 discharge string of adjacency along the longitudinal.

Afterwards, shown in Fig. 7 b, the 2nd discharge string 720 can merge transversely 2 discharge string of adjacency.

So, when merging the discharge string of virtual region, can guarantee the required space of coating fluorophor in the more virtual region.

Thus, after the fluorophor that coating is fully measured in the virtual region, in effective coverage coating fluorophor, therefore further homogenizing fluorophor coating.

Simultaneously, in this Fig. 7 a to Fig. 7 b, shown to merge 2 the 2nd discharge string adjacent to each other, still also can merge the discharge string more than 3.

At this,, can mix the fluorophor of different colours in the discharge string along with the merging of discharge string, but be configured in the 2nd discharge string 710 of virtual region, the 720th, the discharge string of display image even therefore mix versicolor fluorophor, brings any influence can for the image that shows in the effective coverage.

So, be configured in the discharge string of virtual region in order evenly to apply fluorophor in the effective coverage, can adopt the various forms that to guarantee sufficient room to change.

Fig. 8 is that the plasma display panel of introducing the present invention's one example is operated the picture of an example.At this, Fig. 8 has introduced the example of method of the plasma display panel of the present invention's one example.The present invention is not limited to Fig. 8.

Analysis chart 8 can provide reset signal to scan electrode during initialized replacement.Reset signal can comprise tiltedly (Ramp-Up) signal and declivity (Ramp-Down) signal.

For example, during creating (Set-Up) in, the last oblique signal that provides voltage to rise gradually to scan electrode, then between startup stage in, in the discharge string by last oblique signal weak dark discharge (DarkDischarge) takes place, i.e. establishment is discharged.Create discharge by this, will accumulate the wall electric charge (WallCharge) of a certain degree in the discharge string.

During the memory after between startup stage (Set-Down), can after last oblique signal, provide and this declivity (Ramp-Down) signal of oblique signal opposite polarity direction to scan electrode.Then, faint elimination discharge (EraseDischarge) takes place in discharge string, i.e. memory discharge.By this memory discharge, will evenly residually in discharge string can stablize the wall electric charge that address discharge takes place.

In the address period after during resetting, can provide actual sustain the voltage higher to scan electrode, for example the scanning offset signal of the 6th voltage V6 than the minimum voltage of declivity signal.

Simultaneously, can provide from the sweep signal of scanning offset signal decline scanning voltage to scan electrode.

Simultaneously, in the address period of at least one son field, the pulse duration of the sweep signal (Scan) that provides to scan electrode can be different with other son field pulse durations.For example, being arranged in the sweep signal width of the son field of back position in time can be littler than the sweep signal width of in front son field.And the sweep signal width that son field puts in order reduces can adopt 2.6 μ s, 2.3 μ s, and 2.1 μ s, progressive modes such as 1.9 μ s, or adopt 2.6 μ s, 2.3 μ s, 2.3 μ s, 2.1 μ s......1.9 μ s, modes such as 1.9 μ s.

So, when scan electrode provides sweep signal, can be corresponding with sweep signal, provide data-signal to addressing electrode.

Along with the supply of these sweep signals and data-signal, the difference of the voltage between sweep signal and the data-signal will with, the wall voltage addition that the wall electric charge that generates in during the replacement causes produces address discharge thus in the discharge string of supplies data signals.

At this, in address period,, can provide and keep offset signal to keeping electrode for the interference that prevents to keep electrode causes the instability of address discharge.

At this, keep the offset signal stable maintenance less than the voltage of signals of keeping that during keeping, provides, keep bias voltage Vz greater than the voltage of earth level (GND).

Afterwards, in during the keeping of show image to scan electrode or keep in the middle of the electrode one and provide with top electrode and keep signal.For example, can or keep electrode to scan electrode alternately applies and keeps signal.

If such signal of keeping is provided, then provide when keeping signal, at scan electrode with keep to produce between the electrode and keep discharge and promptly show discharge by the selected discharge string of address discharge wall voltage and the voltage Vs addition of keeping of keeping signal in along with discharge string.

Simultaneously, at least one son field, provide a plurality of signals of keeping in during keeping, a plurality of keep in the middle of the signal at least one pulse duration of keeping signal can be different with other pulse durations of keeping signal.For example, a plurality of keeping in the middle of the signal, the pulse duration of keeping signal that provides is the earliest kept the pulse duration of signal greater than other.Then, keeping signal can be more stable.

Thus, the technology composition that is appreciated that the invention described above is that the insider of the technical field of the invention does not change technological thought of the present invention or necessary characteristics, just can implement with other concrete forms.

Therefore, should understand the above example of recording and narrating and be illustration in every respect, be not to be restriction.Than above-mentioned detailed introduction, what more can show scope of the present invention is patent claim described later, should be interpreted as all being included in scope of the present invention from the meaning of patent claim and all changes or the change form of scope and its idea derivation of equal value.

Claims (8)

1, a kind of plasma display panel is characterized in that, it comprises: front substrate; Back substrate with above-mentioned front substrate arranged opposite; Barrier for dividing discharge string between above-mentioned front substrate and back substrate; And be configured in the green of above-mentioned discharge string, redness and blue phosphor layers; Above-mentioned discharge string comprises that the size of above-mentioned the 2nd discharge string is bigger than the size of above-mentioned the 1st discharge string along direction the 1st discharge string and the 2nd discharge string adjacent to each other that forms identical luminescent coating, and above-mentioned the 2nd discharge string is configured in the periphery of above-mentioned the 1st discharge string.

2, plasma display panel according to claim 1 is characterized in that, above-mentioned the 1st discharge string is configured in the effective coverage, and above-mentioned the 2nd discharge string is configured in the virtual region of the periphery of effective coverage.

3, plasma display panel according to claim 1, it is characterized in that, above-mentioned front substrate disposes the scan electrode that forms side by side mutually and keeps electrode, with above-mentioned scan electrode and keep at least one direction side by side in the middle of the electrode, above-mentioned the 2nd discharge string length is longer than above-mentioned the 1st discharge string length.

4, plasma display panel according to claim 1, it is characterized in that, above-mentioned front substrate forms the scan electrode that forms side by side mutually and keeps electrode, with above-mentioned scan electrode and keep on the direction side by side in the middle of the electrode, spacing between any two above-mentioned the 2nd discharge string is littler than spacing between any two above-mentioned the 1st discharge string.

5, plasma display panel according to claim 1 is characterized in that, the configurable long leg position at virtual region of above-mentioned the 2nd discharge string.

6, a kind of plasma display panel is characterized in that, comprising: mutual scan electrode side by side of configuration and the front substrate of keeping electrode; Configuration is with above-mentioned scan electrode and keep the back substrate of the addressing electrode of electrode crossing; Barrier for dividing discharge string between above-mentioned front substrate and back substrate; And be configured in the green of above-mentioned discharge string, redness and blue phosphor layers; The effective coverage disposes the 1st discharge string, along with above-mentioned scan electrode and keep configuration the 2nd discharge string in the 1st virtual region that electrode direction side by side is configured in periphery, above-mentioned effective coverage, dispose the 3rd discharge string along the 2nd virtual region that is configured in periphery, above-mentioned effective coverage with above-mentioned scan electrode and the direction of keeping electrode crossing, the above-mentioned the 1st, 2, the luminescent coating that the configuration of 3 discharge string is identical, the size of above-mentioned the 1st discharge string and above-mentioned the 2nd discharge string big or small identical, the size of above-mentioned the 3rd discharge string is bigger than the size of above-mentioned the 1st discharge string and above-mentioned the 2nd discharge string.

7, plasma display panel according to claim 6, it is characterized in that, with above-mentioned scan electrode and above-mentioned at least one direction side by side of keeping in the middle of the electrode on, above-mentioned the 3rd discharge string length is longer than above-mentioned the 1st discharge string and above-mentioned the 2nd discharge string length.

8, plasma display panel according to claim 6, it is characterized in that, on above-mentioned and scan electrode and above-mentioned at least one direction side by side of keeping in the middle of the electrode, spacing is littler than spacing between any two above-mentioned the 1st discharge string and above-mentioned the 2nd discharge string between any two above-mentioned the 3rd discharge string.

Images