CN1971821A - Plasma display panel - Google Patents
Plasma display panel Download PDFInfo
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- CN1971821A CN1971821A CNA2005101107488A CN200510110748A CN1971821A CN 1971821 A CN1971821 A CN 1971821A CN A2005101107488 A CNA2005101107488 A CN A2005101107488A CN 200510110748 A CN200510110748 A CN 200510110748A CN 1971821 A CN1971821 A CN 1971821A
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Abstract
This invention relates to plasma display panel, which comprises front baseboard, back baseboard, scan electrode, sustain electrode, research electrode and isolation wall, wherein, the front and back baseboards have certain interval distributed parallel; the front baseboard is set with parallel several scan electrodes and sustain electrodes; the back electrode is set with several research electrodes vertical or parallel to the scan electrode or sustain electrode; the isolation wall is set between front and back baseboard with certain interval to divide discharge unit area.
Description
Technical field
The invention relates to the technology of plasma display panel, especially about comprising the plasma display panel of electrode.
Background technology
Usually, the spaced walls that is arranged between plasma display panel front panel and the rear board is made of the unit of a unit, has rushed in in each unit and has contained such as the mist main discharge gases such as (Ne+He) of neon (Ne), helium (He) or neon and helium and the inert gas of a spot of xenon.Make its when discharge when apply high frequency voltage to it, indifferent gas is known from experience and is produced vacuum ultraviolet (Vacuum Ultravio1et rays), swashs to penetrate by ultraviolet ray to make the fluorophor that forms between the spaced walls, and luminescent coating will produce visual luminous, thereby constitutes picture.
Therefore this plasma display panel can be called a kind of epoch-making display unit, and be subjected to the public's attention because it has frivolous and advantage such as be easy to carry.
Fig. 1 is the simple oblique view that shows existing plasma display panel structure.
As shown in Figure 1, plasma display panel is provided with front panel 100 and rear board 110, and front panel 100 and rear board 110 are parallel to each other and at intervals.Be provided with on the front panel 100 can the display frame image preceding glass plate 101, arranging a plurality of electrode pairs of keeping on the preceding glass plate 101, each is kept electrode pair and is made up of a pair of scan electrode 102 and a pair of electrode 103 of keeping again.The back side of rear board 110 is provided with back glass plate 111, is arranging on the rear board 110 and the above-mentioned perpendicular a plurality of addressing electrodes 113 of electrode pair of keeping.
Scan electrode that front panel 100 comprises 102 and keep electrode 103, a pair of scan electrode 102 and keep electrode 103 and be used for making the inert gas of a discharge cell to discharge mutually, and keep the luminous of unit.Scan electrode 102 and keep electrode 103 by transparency electrode (a) that adopts transparent ITO material to make and Bus electrode (b) formation that adopts metal material to make.Scan electrode 102 and keep electrode 103 and be inserted in and can limit discharging current, and make in the more than one upper dielectric layer 104 that insulate between two kinds of electrodes.Be provided with the protective layer of making by magnesium oxide (MgO) material 105 below the upper dielectric layer 104, be used to protect discharge environment.
Be provided with a plurality of discharge spaces on the rear board 110, each discharge space is formed at interval by spaced walls 112, is shape of stripes (well shape) and is arranged in parallel, and its inside is provided with discharge cell.In addition, can carry out address discharge, produce vacuum ultraviolet a plurality of addressing electrode 113 and be the parastate setting with respect to spaced walls 112.The upper surface of rear board 110 scribbles when address discharge, can radiate R, the G, the B fluorophor 114 that are used to carry out the visible rays that picture shows.Between addressing electrode 113 and fluorophor 114, also be provided with lower dielectric layer 115, be used to protect addressing electrode 113.
In having the plasma display panel of said structure, discharge cell adopts matrixer (Matrix) structure, and is provided with several.Driver module comprised be used for to discharge cell provide decide the drive circuit of drive signal, be used for the plasma display panel with said structure is driven.The marriage relation of this plasma display panel and driver module as shown in Figure 2.
Fig. 2 is the schematic diagram that shows existing plasma display panel and driver module marriage relation.
As shown in Figure 2, driver module by data-driven integrated circuit (IC:Integrated Circuit) 220, turntable driving integrated circuit 221, keep distribution panelboard 223 and constitute.Plasma display panel 222 receives image signal from the outside, and passed through after the fixed signal processing, reception is by the data-signal of data-driven integrated circuit 220 outputs, reception is by the sweep signal of turntable driving integrated circuit 221 output and keep signal, and by the signal of keeping of keeping distribution panelboard 223 outputs.The plasma display panel 222 of receive data-signal, sweep signal, keeping signal is selected a plurality of unit that it comprises, and according to sweep signal, selecteed unit is discharged, the unit that discharges with fixed gray scale carry out luminous.Here, data-driven integrated circuit 220 by flexible printer circuit (Flexible Printed Circuit:FPC connectors such as (not showing among the figure), with fixed data-signal send each X electrode (X1～Xn) to.Here said X electrode is exactly a data electrode.
The method of realization picture image gray scale as shown in Figure 3 in the plasma display panel.
Fig. 3 is the schematic diagram that shows existing plasma display panel picture image gray scale implementation method.
As shown in Figure 3, the picture image gray scale of existing plasma display panel (Gray Level) display packing is as follows.
At first a frame is divided into different each subdomain (Subfield) of the number of times of giving out light, each subdomain (Subfield) has been divided into again and has been used for again all unit are carried out initialized reseting period (RPD), are used to select to want the address period (APD) of discharge cell and according to (SPD) during the keeping of discharge time display gray scale.Give an example, wanting under the situation that picture image is shown with 256 gray scales, be equivalent to (16.67ms) during 1/60 second the picture, as shown in Figure 3,8 subdomains (Subfield) (SF1 to SF8) have been divided into, during 8 subdomains (Subfield) (SF1 to SF8) have been divided into reseting period, address period again respectively and keep.
The reseting period of each subdomain (Subfield) is identical with address period.Being used for the address discharge that the unit that will discharge is selected is by causing as the voltage difference between the transparency electrode of X electrode and Y electrode.Here, the Y electrode is exactly a scan electrode.In each subdomain (Subfield), be 2 during keeping
2The ratio of (n=0,1,2,3,4,5,6,7) increases.Have nothing in common with each other during keeping in each subdomain (Subfield) like this, so during the keeping of each subdomain (Subfield), promptly keep discharge time and just obtained adjusting, and demonstrate the gray scale of picture image.According to the drive waveforms that driving method showed of this plasma display panel as shown in Figure 4.
What Fig. 4 showed is the drive waveforms that shows according to existing plasma display panel driving method.
As shown in Figure 4, plasma display panel be divided into be used to make that all unit carry out the initialized interval that resets, between the addressed area that is used for the unit that will discharge is selected, be used for the elimination interval of keeping the interval and being used for the wall electric charge in the unit that finishes discharge is removed that the discharge of selected unit is kept.
For the interval that resets, all Y electrodes receive acclivity (Ramp-up) waveform simultaneously in the first transition.According to acclivity (Ramp-up) waveform of this rising, caused the more weak dark discharge (Dark Discharge) of discharge cell of whole image.According to this rising (setup) discharge, X electrode and Z electrode just have been coupled with anodal wall electric charge, and the Y electrode just has been coupled with negative pole wall electric charge.Here, the Z electrode is kept electrode exactly.
After rising acclivity (Ramp-up) waveform finishes, just entered the last transition.In the last transition, to begin to descend by low cathode voltage from peak voltage than rising acclivity (Ramp-up) waveform, to drop to following decline slope (Ramp-down) rising waveform of ground connection (GND) voltage always, by causing elimination faint in unit discharge, thereby fully eliminated wall electric charge excessive in the Y electrode.Utilize this discharge that descends, the feasible wall electric charge that maintains in the unit is able to cause the degree of stabilizing address discharge.
In between addressed area, negative pole sweep signal (Scan) is sent in each Y electrode successively, and synchronous with sweep signal, and the data-signal of positive pole is sent on the X electrode.Along with the wall voltage that generates in the voltage difference of the sweep signal here and data-signal and the interval that resets increases gradually, the discharge cell that receives data-signal has just produced address discharge.Will to according to address discharge selected unit apply keep voltage (Vs) in, will produce the wall electric charge, cause discharge by the wall electric charge.In between Z electrode last transition and addressed area, the voltage difference of Z electrode and Y electrode reduces gradually, and cathode voltage (Vz) is provided, and makes Z electrode and Y electrode erroneous discharge can not occur.
In keeping the interval, alternately transmit to Y electrode and Z electrode and to keep signal (Sus).According to the wall voltage in the selected unit of address discharge with keep signal and increase gradually, whenever said units receives when keeping signal, will produce between Y electrode and the Z electrode and keep discharge, promptly show discharge.
Keeping after discharge finishes, eliminate in the interval, the voltage of the elimination Rampup waveform (Ramp-ers) that pulse duration and voltage levvl are smaller has been added on the Z electrode, and eliminated in the unit of whole image residual wall electric charge.
But the structure of existing plasma display panel increases owing to carry out the discharge ionization voltage of plasma discharge gradually for the exigent plasma display panel of image quality, thus just increased unsteadiness, thus the problem with regard to causing that discharging efficiency descends.
Summary of the invention
The present invention proposes in order to address the above problem, and the objective of the invention is to provide a kind of by the addressing electrode after the improvement is set, thereby can improve unstable characteristic, and improve the plasma display panel of discharging efficiency.
In order to realize above-mentioned problem, plasma display panel of the present invention comprises front substrate, back substrate, scan electrode, keeps element such as electrode, addressing electrode and spaced walls.Front substrate and back substrate have certain intervals each other, are arranged in parallel; Be provided with several scan electrodes that are parallel to each other on the front substrate and keep electrode; Be provided with scan electrode on the substrate of back or keep several perpendicular or parallel addressing electrodes of electrode; Spaced walls is arranged between front substrate and the back substrate, has one between each spaced walls at interval, is used for the dividing discharge unit area.
With above-mentioned scan electrode and keep the bottom that electrode several addressing electrodes perpendicular or that be arranged in parallel are arranged on spaced walls, and as feature.
With above-mentioned scan electrode with keep electrode several addressing electrodes perpendicular or that be arranged in parallel and interconnect, and as feature.
With above-mentioned scan electrode with keep electrode several addressing electrodes perpendicular or that be arranged in parallel and interconnect, make these addressing electrodes state in an overlapping, and as feature.
Effect of the present invention:
As mentioned above, plasma display panel of the present invention improves unstable characteristic by being provided with improved addressing electrode thereby can reach, and improves the effect of discharging efficiency.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the schematic diagram of the existing plasma display panel structure of simple displaying.
Fig. 2 is the schematic diagram that shows existing plasma display panel and driver module marriage relation.
Fig. 3 is the implementation method schematic diagram that shows existing plasma display panel picture image gray scale.
What Fig. 4 showed is the drive waveforms that shows according to existing plasma display panel driving method.
Fig. 5 is the schematic diagram of simple displaying plasma display panel structure of the present invention.
Fig. 6 is the scan electrode that shows plasma display panel of the present invention, the schematic diagram of keeping electrode and addressing electrode formation.
Embodiment
Followingly be described in more detail with reference to the embodiment of accompanying drawing to plasma display panel of the present invention.
Fig. 5 is the oblique view of simple displaying plasma display panel structure of the present invention.
The structure of plasma display panel of the present invention is identical with the structure of the existing plasma display panel shown in the accompanying drawing 1.Just, be arranged on the back substrate 510 with above-mentioned scan electrode 502 and keep electrode 503 several addressing electrodes 513 perpendicular or that be arranged in parallel be arranged on spaced walls 512 under.
The structure of plasma display panel of the present invention as shown in Figure 5.At first, be provided with Bus electrode 502b, the 503b that adopts transparency electrode 502a, 503a that transparent ITO material forms and employing metal material to be made on the preceding glass plate 501 of front substrate 500.In addition, also be provided with dielectric layer 504 on the front substrate 500, be used to control the discharging current of transparency electrode 502a, 503a and Bus electrode 502b, 503b, and make between transparency electrode 502a, 503a and Bus electrode 502b, the 503b and be in state of insulation.Relatively easily to realize discharge environment in order making in the above-mentioned dielectric layer 504, also to be provided with the protective layer of making by magnesium oxide (MgO) material 505 on the front substrate 500.
In addition, be provided with above-mentioned scan electrode 502 on the back glass plate 511 of back substrate 510 and keep several addressing electrodes 513 that electrode 503 is perpendicular or be arranged in parallel.Also be provided with the lower dielectric layer 515 that is used to protect above-mentioned several addressing electrodes 513 on the back substrate 510.In addition, 510 also be provided with spaced walls 512 and R, G, B fluorophor 114 on the substrate of back.Spaced walls 512 is used for dividing red (R), green (G), cyan (B) discharge cell region, and prevents to produce between the various discharge cells cross interference (Cross-Talk) phenomenon; R, G, B (red, green, blue) fluorophor 114 can radiate and be used to carry out the visible rays that picture shows.
Above-mentioned several addressing electrodes 513 comprise with scan electrode 502 or keep the 1st addressing electrode 513a of the perpendicular arrangement of direction of electrode 503 and the 2nd horizontal addressing electrode 513b.Above-mentioned several addressing electrodes 513 interconnect, the state in an overlapping in spaced walls 512 bottoms.The situation that 6 pairs of this several addressing electrodes 513 of accompanying drawing are arranged on spaced walls 512 bottoms has been made more detailed description.
Fig. 6 is the scan electrode that shows plasma display panel of the present invention, the schematic diagram of keeping electrode and addressing electrode formation.
As shown in Figure 6, the addressing electrode 613 of upward setting of back substrate (not having expression on the figure) comprises the 1st addressing electrode 613a and the 2nd addressing electrode 613b.The orientation of the 1st addressing electrode 613a and the scan electrode 602 that is arranged on above-mentioned front substrate (do not have on the figure represent) or to keep the direction of electrode 603 perpendicular; The orientation of the 2nd addressing electrode 613b is at the scan electrode 602 of above-mentioned front substrate (do not have on the figure expression) or to keep the direction of electrode 603 parallel.Above-mentioned several addressing electrodes 613 interconnect, the state in an overlapping in spaced walls 612 bottoms.
Here, in the 1st addressing electrode 613a and the 2nd addressing electrode 613b of the spaced walls overlapped setting in 612 bottoms, the 2nd addressing electrode 613b is unexistent in the existing plasma display panel.Since the direction of the 2nd addressing electrode 613b be arranged on front substrate (not having among the figure to represent) on scan electrode 602 or to keep the orientation of electrode 603 identical, therefore just increased by scan electrode 602, kept the area (S1 of electrode 603 and the formed effective sparking electrode of the 2nd addressing electrode 613b, S2), when plasma discharges, can reduce discharge ionization voltage, improve existing unstable characteristic, and improved the discharging efficiency of panel comprehensively.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (4)
1, a kind of plasma display panel is characterized in that comprising:
Have front substrate and back substrate that certain intervals is arranged each other;
Be arranged in parallel within several scan electrodes on the above-mentioned front substrate and keep electrode;
With above-mentioned scan electrode with keep several addressing electrodes that electrode is perpendicular or be arranged in parallel;
Be arranged between above-mentioned front substrate and the back substrate, have one each other at interval, and be used for the spaced walls of dividing discharge unit area.
2, plasma display panel as claimed in claim 1 is characterized in that:
With above-mentioned scan electrode with keep the bottom that electrode several addressing electrodes perpendicular or that be arranged in parallel are arranged on spaced walls.
3, plasma display panel as claimed in claim 1 or 2 is characterized in that:
With above-mentioned scan electrode with keep electrode several addressing electrodes perpendicular or that be arranged in parallel and interconnect.
4, plasma display panel as claimed in claim 3 is characterized in that:
With above-mentioned scan electrode with keep electrode several addressing electrodes perpendicular or that be arranged in parallel and interconnect, make these addressing electrodes state in an overlapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101107488A CN1971821A (en) | 2005-11-25 | 2005-11-25 | Plasma display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101107488A CN1971821A (en) | 2005-11-25 | 2005-11-25 | Plasma display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1971821A true CN1971821A (en) | 2007-05-30 |
Family
ID=38112559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101107488A Pending CN1971821A (en) | 2005-11-25 | 2005-11-25 | Plasma display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1971821A (en) |
-
2005
- 2005-11-25 CN CNA2005101107488A patent/CN1971821A/en active Pending
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