CN101266905A - Plasm display plate - Google Patents
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- CN101266905A CN101266905A CNA2008100255486A CN200810025548A CN101266905A CN 101266905 A CN101266905 A CN 101266905A CN A2008100255486 A CNA2008100255486 A CN A2008100255486A CN 200810025548 A CN200810025548 A CN 200810025548A CN 101266905 A CN101266905 A CN 101266905A
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Abstract
The invention discloses a plasma display panel, comprising a front substrate disposed with a first electrode and a second electrode in parallel arrangement; a back substrate oppositely disposed on the front substrate; a barrier rib for dividing spike trains between the front substrate and the back substrate; in the barrier rib, a dent is formed on the position where the first electrode overlaps with the second electrode. By forming the dent on the position where the first electrode overlaps with the second electrode in the barrier rib, the plasma display panel according to the invention can reduce the noise resulted from conflict between the barrier rib and the upper dielectric layer when being driven.
Description
Technical field
The present invention relates to a kind of plasma display panel.
Background technology
Usually, in the plasma display panel, form a plurality of electrodes (Electrode) in the luminescent coating that in the discharge string (Cell) of dividing, forms by effective barrier.
Provide drive signal by kind electrode to discharge string.
Then, the drive signal by supply produces discharge in the discharge string.At this, when discharging by drive signal in discharge string, the discharge gas that charges in the discharge string can produce vacuum ultraviolet (VacuumUltravioletrays), and this excited by vacuum ultraviolet is formed on the fluorophor in the discharge string, produces visible light.By this visible light, show image on the picture of plasma display panel.
Summary of the invention
Goal of the invention: a kind of by improving the plasma display panel that the barrier shape reduces noise thereby the present invention aims to provide.
Technical scheme: plasma display panel of the present invention comprise configuration mutually side by side the 1st electrode and the front substrate of the 2nd electrode; Back substrate with the front substrate arranged opposite; And barrier for dividing discharge string between substrate and the back substrate in front; In the barrier, and form countersink on the 1st electrode and the 2nd electrode position overlapped.
Wherein, the height of countersink is 0.02 times～0.1 times of barrier height.
Wherein, the width of countersink is 0.05 times～0.5 times of barrier middle-end width, and best countersink width is 0.1 times～0.2 times of barrier middle-end width.
Wherein, barrier comprises the 1st barrier and the 2nd barrier that crosses one another, and forms above-mentioned countersink at least one in the middle of the 1st barrier or the 2nd barrier.
Beneficial effect: plasma display panel of the present invention, by in barrier, with the 1st electrode and the 2nd electrode and lap position on form countersink, have the effect that barrier and upper dielectric layer conflict when reduce driving produce noise.
Description of drawings
Fig. 1 is a picture of introducing the plasma display panel structure of the present invention's one example.
Fig. 2 is for further specifically introducing the picture of barrier.
Fig. 3 a to Fig. 3 c introduces the picture that forms the reason of countersink in the barrier.
Fig. 4 is for more specifically introducing the picture of the width of countersink.
Fig. 5 be introduce that the 1st barrier and the 2nd barrier intersect be among the picture of countersink shape.
Fig. 6 be introduce that the 1st barrier and the 2nd barrier intersect be among the picture of another kind of shape of countersink.
Fig. 7 introduces the picture that embodies the image frame (Frame) of image tone in the plasma display panel of the present invention's one example.
Fig. 8 operates the picture of an example for the plasma display panel of introducing the present invention's one example in the son field that is included in image frame.
Embodiment
Below, specifically introduce plasma display panel of the present invention with reference to accompanying drawing.
Fig. 1 is a picture of introducing the plasma display panel structure of the present invention's one example.
At first, analysis chart 1, the plasma display panel of an example then of the present invention by configuration mutually side by side the 1st electrode 102 and the back substrate 111 of the 3rd electrode 113 that intersects of the front substrate 101 of the 2nd electrode 103 and configuration and the 1st electrode 102 and the 2nd electrode 103 engage and form.
At this,, Fig. 1 can not comprise transparency electrode and bus electrode respectively though showing the 1st electrode 102 and the 2nd electrode 103.
(102a 103a) can comprise indium tin oxide transparent materials such as (IndiumTinOxide:ITO) to transparency electrode.
(102b 103b) can comprise silver electrical conductance good metal materials such as (Ag) to bus electrode.
Or the 1st electrode 102 and the 2nd electrode 103 can be formed with individual layer (OneLayer) structure.For example, the 1st electrode (102) and the 2nd electrode (103) can be the electrode that omits aforementioned transparency electrode, for example ITO-Less electrode.
And, though do not show among Fig. 1, in front substrate 101 and the 1st electrode 102 and the 2nd electrode 103 between configuration have black layer than the 1st electrode 102 and the 2nd electrode 103 darker colors.For example, when the 1st electrode 102 and the 2nd electrode 103 comprise transparency electrode and bus electrode respectively, can be respectively between the transparency electrode of the 1st electrode 102 and the bus electrode and the transparency electrode of the 2nd electrode 103 and bus electrode between dispose black layer.
The upper dielectric layer 104 that covers the 1st electrode 102 and the 2nd electrode 103 can be formed at front substrate 101 tops of this formation the 1st electrode 102 and the 2nd electrode 103.
The discharging current of upper dielectric layer 104 restriction the 1st electrodes 102 and the 2nd electrode 103, make the 1st electrode (102, Y) and the 2nd electrode (103, Z) between insulation.
Can on upper dielectric layer 104, form the protective layer 105 of facilitation discharging condition.This protective layer 105 can be by the high material of secondary electron release coefficient, and for example magnesium oxide (MgO) is formed.
Simultaneously, configured electrodes on the back substrate 111, the 3rd electrode 113 for example can be used on back substrate 111 tops of this formation the 3rd electrode 113, forms the lower dielectric layer 115 that covers the 3rd electrode 113.
This lower dielectric layer 115 can make 113 insulation of the 3rd electrode.
The bar shaped that the dividing discharge space is a discharge string (StripeType), well shape (WellType), triangle (DeltaType), barriers such as honeycombed 112 can be formed at the top of this lower dielectric layer 115.Therefore, can between face substrate 101 and back substrate 111, form red (Red:R), green (Green:G), blue discharge string such as (Blue:B).
And, red (R), green (G) outside blue (B) discharge string, also can form white (White:W) or yellow (Yellow:Y) discharge string again.
Simultaneously, in the barrier 112, forming the countersink (not shown) with the overlapping position of the 1st electrode 102 and the 2nd electrode 103.To introduce more specifically this countersink later on.
Simultaneously, can be included in the redness (R) in the plasma display panel of plasma display system of the present invention's one example, 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.
So be provided with, then be located at interior luminescent coating (114) width of discharge string also along with the width of discharge string changes.For example, be located at blueness (B) the luminescent coating width of blueness (B) discharge string, wideer than redness (R) the luminescent coating width that is located in redness (R) discharge string; Be located at the width of green (G) luminescent coating in green (G) discharge string simultaneously, wideer than the width that is located at redness (R) luminescent coating in redness (R) discharge string.
Then, can improve the photo dazzle color temperature characteristic that is embodied.
And the plasma display panel of the plasma display system of the present invention's one example not only can adopt barrier shown in Figure 1 112 structures also can take the barrier structure of multiple shape.For example, can adopt barrier 112 to comprise the 1st barrier 112b and the 2nd barrier 112a, wherein the height of the 1st barrier 112b and the 2nd barrier 112a type barrier structure such as mutually different difference highly.
At this, if type barrier structures such as differences, then the height of the 1st barrier 112b can be lower than the 2nd barrier 112a height in the middle of the 1st barrier 112b or the 2nd barrier 112a.
Simultaneously, though Fig. 1 shows and has introduced in the plasma display panel of the present invention's one example red (R) that green (G) and blue (B) discharge string are arranged in respectively on the same line, also can be with other shapes arrangements.For example, also can take redness (R), green (G) and blue (B) discharge string are arranged by triangle (Delta) type of triangular shaped arrangement.And the shape of discharge string also can adopt the pentagon outside the quadrangle, multiple polygon such as hexagon.
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.
At this, can charge into certain discharge gas in the discharge string by barrier 112 divisions.For example, can charge into argon (Ar), neon (Ne), xenon (Xe) is as discharge gas.
Simultaneously, in the discharge string by barrier 112 divisions, discharge the luminescent coating 114 of the visible light of displayed image in the time that address discharge can being formed.For example, can form redness (Red:R), green (Green:G), blue (Blue:B) luminescent coating.
And except red (R), green (G) also can form white (White:W) and/or yellow (Yellow:Y) luminescent coating again outside blue (B) fluorophor.
And, red (R), luminescent coating 114 thickness of at least one discharge string are different with other discharge string in the middle of green (G) and blue (B) discharge string.For example, promptly green (G) luminescent coating 114b of the luminescent coating of green (G) discharge string, or the luminescent coating of blue discharge string, the thickness that is blue phosphor layers 114a is thicker than promptly red (R) luminescent coating 114c of the luminescent coating thickness of red (R) discharge string, at this, luminescent coating 114 thickness of green (G) discharge string can be identical or different with the luminescent coating 114 thickness reality of blue (B) discharge string.
Simultaneously, more than only be plasma display panel one example that shows and introduced the present invention's one example, indicate the plasma display panel that the present invention is not limited to have above structure at this.For example, only show the upper dielectric layer of numbering 104 in more than introducing and number the example that 115 lower dielectric layer is respectively a layer (Layer), but more than one dielectric layer can be formed by a plurality of layers in the middle of this upper dielectric layer and the lower dielectric layer.
And the width or the thickness that are formed on the 3rd electrode 113 on the back substrate 111 can be certain value, and the width of discharge string inside or thickness also can be different with discharge string external width or thickness.For example, the wide or thickness of discharge string inside can be wideer or thicker than discharge string outside.
Below, Fig. 2 is for further specifically introducing the picture of barrier.
In conjunction with additional Fig. 3 a to Fig. 3 c, analyze the reason that forms countersink 200 at barrier 112.
Fig. 3 a to Fig. 3 c introduces the picture that forms the reason of countersink in the barrier.
At first, shown in Fig. 3 a, substrate inside is the discharge gas pressure that charges in the discharge string during greater than the substrate external pressure, and the strength that the discharge gas that charges in the discharge string outwards discharges can work, and can strengthen at interval between barrier 112 and the upper dielectric layer 104 thus.At this, at upper dielectric layer 104 top configuration protection layers, can ignore but protective layer thickness is very thin, ignore protective layer when therefore introducing.
So, if barrier 112 and upper dielectric layer 104 are split, portion's dielectric layer 104 and barrier 112 conflict and the generation noise when then driving.
Moreover, when barrier 112 and the 1st electrode 102 and the 2nd electrode 103 are overlapping, shown in following Fig. 3 b, during driving, in the slit that upper dielectric layer (104) and barrier 112 split, at the 1st electrode 102 and the 2nd electrode 103 tops accumulation ancient piece of jade, round, flat and with a hole in its centre electric charge (Wallcharge),, in the slit that upper dielectric layer 104 and barrier 112 split, discharge because of the effect of this ancient piece of jade, round, flat and with a hole in its centre electric charge.Then can more frequent generation upper dielectric layer 104 and barrier 112 conflicts, can more increase the generation of noise thus.
For example, when driving plasma display panel in the higher area of height above sea level, therefore the substrate internal pressure can aggravate the generation of noise relatively than substrate external pressure height.
On the contrary, shown in the present invention's one example, in the barrier 112, if, then can reduce and buying the age that the upper dielectric layer 104 of barrier 112 is conflicted forming countersink 200 with the 1st electrode 102 and the 2nd electrode 103 position overlapped.Simultaneously,, the sufficient free space that discharge can take place can be set also between the 1st electrode 102 and the 2nd electrode 103, therefore can reduce the noise when driving on barrier 112 tops even barrier 112 and the 1st electrode 102 and the 2nd electrode 103 are overlapping.
And, when countersink 200 height (h1) are too high, can weaken barrier 112 intensity.On the contrary, countersink 200 height (h1) are crossed when hanging down, and can not fully prevent the conflict of barrier 112 and upper dielectric layer 104.
When considering these, the height of countersink 200 (h1) is preferably 0.02 times～0.1 times of barrier 112 height h2.
Simultaneously, in conjunction with following Fig. 4, concrete analysis countersink 200 width (W1).
Fig. 4 is for more specifically introducing the picture of the width of countersink.
Analyzed among Fig. 4, at the ratio of countersink 200 width (W1) and barrier 112 middle-end width (W2) is 0.01 between 0.7 the time, being countersink 200 width (W1) is more than 0.01 times below 0.7 times time of barrier 112 middle-end width (W2), the structural stability of the generation of noise and barrier 112.A little less than X represents that the big relatively or barrier intensity of noise relatively in this Fig. 4, represent bad; Zero expression is good; ◎ represents fine.
Analysis chart 4, then countersink 200 width (W1) are more than 0.01 times below 0.03 times time of barrier 112 middle-end width (W2), because of countersink 200 width (W1) too small, relative wide with the area of upper dielectric layer 104 conflicts of barrier 112, therefore can increase noise, be that noise is bad.
At this, barrier 112 middle-end width (W2) are meant and highly are being barrier 112 width in the h/2 position.
On the contrary, countersink 200 width (W1) are more than 0.05 times below 0.07 times time of barrier 112 middle-end width (W2), and the width of countersink 200 (W1) is just, because noise is good.
Simultaneously, countersink 200 width (W1) be barrier 112 middle-end width (W2) more than 0.1 times the time, countersink 200 width (W1) are fully little, the area that therefore conflicts with the upper dielectric layer 104 of barrier 112 is fully little.Therefore, noise is fine.
And, when aspect barrier 112 structural stabilities, considering, countersink 200 width (W1) be barrier 112 middle-end width (W2) more than 0.6 times the time, countersink 200 width (W1) are wide, then the width (W3) of barrier 112 upper end can be too small, thus barrier 112 intensity can cross if.Therefore, barrier 112 structural stabilities are bad.
On the contrary, countersink 200 width (W1) are more than 0.25 times below 0.5 times time of barrier 112 middle-end width (W2), and countersink 200 width (W1) are lucky, and the width (W3) of barrier 112 upper end also can be lucky.Therefore, barrier 112 structural stabilities are good.
Simultaneously, countersink 200 width (W1) are more than 0.01 times below 0.2 times time of barrier 112 middle-end width (W2), and the width (W3) of barrier 112 upper end is fully big, therefore can fully guarantee barrier 112 intensity.Therefore, barrier 112 structural stabilities are fine.
Below, Fig. 5 be introduce that the 1st barrier and the 2nd barrier intersect be among the picture of countersink shape.
When analysis chart 5, barrier 112 comprise the 1st barrier 112b that crosses one another and the 2nd barrier 112a, countersink 500 can with bar shaped (Stripe) shape be located at the 1st electrode 102 and the 2nd electrode 103 the 1st barrier 112b side by side on.
At this,, during then from the 1st barrier 112b angle analysis, formed bar shaped countersink 500 on the 1st barrier 112b top if hypothesis the 1st barrier 112b is identical with the height reality of the 2nd barrier 112a; During from the 2nd barrier 112a angle analysis, formed point (Dot) shape countersink 500 on the 2nd barrier 112a top.
Below, Fig. 6 be introduce that the 1st barrier and the 2nd barrier intersect be among the picture of another kind of shape of countersink.Analysis chart 6, then barrier 112 comprises the 1st barrier 112b and the 2nd barrier 112a that crosses one another.At this, when the height of the 1st barrier 112b and the 2nd barrier 112a is different, can on any barrier in the middle of the 1st barrier 112b or the 2nd barrier 112a, form countersink 600.
For example, in the middle of the 1st barrier 112b and the 2nd barrier 112a, when the height of the 2nd barrier 112a is higher, can on the 2nd barrier 112a, form countersink 600.
Below, Fig. 7 introduces the picture that embodies the image frame (Frame) of image tone in the plasma display panel of the present invention's one example.
Analysis chart 7, the image frame that embodies image tone (GrayLevel) in the plasma display system of an example then of the present invention is divided into the mutually different a plurality of son fields of number of light emission times.
And, though do not show among the figure, the son field of at least more than one in a plurality of son fields can be further divided into (ResetPeriod) during the replacement of all discharge string of initialization, the address period of the discharge string that selection will be discharged (AddressPeriod) and embody (SustainPeriod) during the keeping of tone according to discharge time.
For example, with 256 tone display images the time, as shown in Figure 7, an image frame is divided into 8 son fields (SF1 to SF8), and 8 son fields (SF1 to SF8) are divided into respectively during the replacement again, address period and keep during.
And, can offer by adjustment and keep the signal number during keeping, set the tone weighted value of corresponding son field.That is, can utilize and be that each son field sets certain tone weighted value during keeping.For example, can adopt tone weighted value to be made as 2 with the 1st son field
0, the tone weighted value of the 2nd son field is made as 2
1Method, determine the tone weighted value of each son field, thereby the tone weighted value that makes each son field is with 2
nThe ratio of (still, n=0,1,2,3,4,5,6,7) increases.So, can in each son field, be adjusted in the number of keeping signal of supplying during the keeping of each son field, thereby embody various image tone according to the tone weighted value.
The plasma display panel of the present invention's one example such as for 1 second image of demonstration, adopts a plurality of frames for show image.For example, for showing 1 second image, adopt 60 image frames.At this moment, the length of a frame (T) can be 1/60 second, i.e. 16.67ms.
Wherein, Fig. 7 only shows and introduced the example that a frame is divided into 8 son fields, but can be different with it, can various change forms the number of the son field of a frame.For example, can form a frame, also can form a frame by 10 sub-fields by 12 sub-fields till the 1st son field to the 12 son fields.
And, each son field is the sequence arrangement that increases according to tone weighted value size in an image frame shown in Figure 7, but also can be different with it, according to the sequence arrangement that the tone weighted value reduces, each son field also can irrespectively be arranged with the tone weighted value.
Below, Fig. 8 is for introducing the picture of operation one example of the plasma display panel of an example of the present invention in the son field that is included in image frame.
Analysis chart 8, in during the establishment during carrying out initialized replacement (Set-Up), to the 1st electrode apply sharply rise to the 2nd voltage V2 from the 1st voltage V1 after, voltage drops to tiltedly (Ramp-Up) signal of going up of the 3rd voltage V3 more gradually since the 2nd voltage V2.Wherein, the 1st voltage V1 can be the voltage of ground connection (GND).
In between this startup stage, by last oblique signal weak dark discharge (DarkDischarge) taking place in the discharge string, promptly creates discharge.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 the 1st electrode.
Wherein, the declivity signal can be from peak value (Peak) voltage of last oblique signal, and the 4th voltage V4 that promptly is lower than the 3rd voltage V3 drops to the 5th voltage V5 gradually.
Along with the supply of this declivity signal, faint elimination discharge (EraseDischarge) takes place, i.e. memory discharge in discharge string.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 to the 1st electrode is more high voltage, for example the scanning offset signal of the 6th voltage V6 of the 5th voltage V5 than the minimum voltage of declivity signal.
Simultaneously, can provide from the sweep signal (Scan) of scanning offset signal decline scanning voltage Δ Vy to the 1st electrode.Simultaneously, the width of sweep signal (Scan) can change according to son field unit.That is, at least more than one the son field, the width of sweep signal (Scan) can be different with the sweep signal width in other son fields.For example, being arranged in sweep signal (Scan) width of the son field of back position in time can be littler than sweep signal (Scan) width of in front son field.And, the sweep signal that son field puts in order (Scan) width reduces can adopt 2.6 μ s (microsecond), 2.3 μ s (microsecond), 2.1 μ s (microsecond), 1.9 μ s progressive modes such as (microseconds), or adopt 2.6 μ s (microsecond), 2.3 μ s (microsecond), 2.3 μ s (microsecond), 2.1 μ s (microsecond) ... 1.9 μ s (microsecond), 1.9 μ s modes such as (microseconds).
So, when the 1st electrode provides sweep signal, can be corresponding with sweep signal, the data-signal of the size delta Vd of climb data voltage is provided to the 3rd electrode.
Along with the supply of these sweep signals and data-signal signal, the difference of the voltage of sweep signal and 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,, the interference that prevents the 2nd electrode can provide the instability of address discharge and keep offset signal to the 2nd electrode for causing.
At this, keep the offset signal practical stability and keep less than during keeping, applying and keep voltage of signals, keep bias voltage Vz greater than the voltage of earth level (GND).
Afterwards, in during the keeping of show image in the middle of the 1st electrode or the 2nd electrode one provides with top electrode and keeps signal.For example, can alternately apply to the 1st electrode or the 2nd electrode and keep signal.
If such signal of keeping is provided, then provide when keeping signal 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, between the 1st electrode or the 2nd electrode, produce and keep discharge and promptly show discharge.
Can on the plasma display panel picture, manifest image by this method.
As mentioned above, 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 the scope of claim, should be interpreted as the meaning of accessory rights claimed range and all changes or the change form of scope and its idea derivation of equal value and all be included in scope of the present invention.
Claims (5)
1, a kind of plasma display panel is characterized in that it comprises: configuration mutually side by side the 1st electrode and the front substrate of the 2nd electrode; Back substrate with above-mentioned front substrate arranged opposite; Reach barrier for dividing discharge string between above-mentioned front substrate and back substrate; In the above-mentioned barrier, and form countersink on above-mentioned the 1st electrode and the 2nd electrode position overlapped.
2, plasma display panel according to claim 1 is characterized in that above-mentioned countersink height is 0.02 times～0.1 times of above-mentioned barrier height.
3, plasma display panel according to claim 1 is characterized in that above-mentioned countersink width is 0.05 times～0.5 times of above-mentioned barrier middle-end width.
4, plasma display panel according to claim 3 is characterized in that above-mentioned countersink width is 0.1 times～0.2 times of above-mentioned barrier middle-end width.
5, plasma display panel according to claim 1 is characterized in that above-mentioned barrier comprises the 1st barrier and the 2nd barrier that crosses one another, and forms above-mentioned countersink at least one in the middle of above-mentioned the 1st barrier or the 2nd barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100255486A CN101266905A (en) | 2008-04-29 | 2008-04-29 | Plasm display plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100255486A CN101266905A (en) | 2008-04-29 | 2008-04-29 | Plasm display plate |
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| CN101266905A true CN101266905A (en) | 2008-09-17 |
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| CNA2008100255486A Pending CN101266905A (en) | 2008-04-29 | 2008-04-29 | Plasm display plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770916A (en) * | 2009-12-31 | 2010-07-07 | 四川虹欧显示器件有限公司 | Barrier structure of plasma display and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770916A (en) * | 2009-12-31 | 2010-07-07 | 四川虹欧显示器件有限公司 | Barrier structure of plasma display and manufacturing method thereof |
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Open date: 20080917 |