CN1549294A - Plasma display panel and its forming method - Google Patents
Plasma display panel and its forming method Download PDFInfo
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- CN1549294A CN1549294A CNA031238688A CN03123868A CN1549294A CN 1549294 A CN1549294 A CN 1549294A CN A031238688 A CNA031238688 A CN A031238688A CN 03123868 A CN03123868 A CN 03123868A CN 1549294 A CN1549294 A CN 1549294A
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Abstract
The present invention relates to a plasma display panel with opaque discharge electrode pair and its forming method. No need of any transparent electrode, and said two opaque discharge electrodes of said same opaque discharge electrode pair are mutually separated, but they are mutually closed together, so that the discharge between electrodes can be effectively implement. In order to ensure that the opening rate can meet requirements the area of the opaque discharge electrode pair is clearly less than panel area, and the form of every opaque discharge electrode is not linear or rectangular, and is made into the form of track or chain with several transparent openings.
Description
Technical field
The present invention relates to a kind of electric slurry display panel and a kind of method that forms electric slurry display panel, particularly a kind of has the right electric slurry display panel of opaque sparking electrode, and a kind of opaque material and transparent material of can comprehensively using forms the right formation electric slurry display panel method of opaque sparking electrode.
Background technology
Electric slurry display panel is widely used in the hyundai electronics industry gradually.This is because electric slurry display panel can form the display of high brightness, rich color, high visible angle and minimal thickness.Therefore, how to improve the structure and the formation method of electric slurry display panel, become popular in recent years topic naturally.
The structure of existing electric slurry display panel, shown in Figure 1A, at least comprise following elementary cell: first substrate (front substrate), 11, second substrate (rear substrate) 12, most sparking electrode (discharge electrode) 13, most auxiliary electrode (BUS electrode) 14, most black line (black stripe, BS) 15, most addressing electrode (address electrode) 16, lure electrics layer (dielectric layer) 17 and fluorescent layer (phosphor layer) 18.And at each electrode pair that is separated out by black line 15, shown in Figure 1B, existence is by two sparking electrodes 13 and two auxiliary electrode 14 formed electrode pairs of being separated from each other, and two sparking electrodes 13 as discharge with (forming the discharge structure cell), and whether two auxiliary electrodes 14 are used for controlling this and will discharge to electrode pair.About the known correlation technique of electric slurry display panel, at least can be referring to following data: US 6,362,799 B1, US 6,097,149, US5,742,122 with US 5,541,479.To no longer describe in detail at this.
But the existing structure shown in Figure 1A and Figure 1B tends to can't further promote because of following factors the performance of electric slurry display panel.
On the one hand, because the area of sparking electrode 13 is big,, normally form sparking electrode 13 with transparent conductive material for avoiding that the aperture opening ratio of electric slurry display panel is produced the harmful effect of can not ignore.For example use indium tin oxide (Indium Tin Oxide, ITO), tin-oxide (TinOxide, TO), or the slicker solder oxide (Lead Tin Oxide, LTO).And, therefore still use the preferable opaque electric conducting material of conductivity, but auxiliary electrode 14 areas are dwindled as far as possible because auxiliary electrode 14 is to be used for conducted signal.But the resistance value of existing transparent conductive material is still apparently higher than the resistance value of opaque conductive material, as the resistance value of black line slurry, metal and amorphous silicon etc.Therefore, electric current by auxiliary electrode 14 and sparking electrode 13 with the process of discharging in, the two all-in resistance of auxiliary electrode 14 and sparking electrode 13 is higher, and make that the resistance-capacitance time constant is bigger than normal, and then the reaction rate that causes electric slurry display panel is subjected to the influence of resistance-capacitance time constant, and can't accelerate reaction rate further.
On the other hand, because the resistance value difference, electric current nearly all is to flow along auxiliary electrode 14 when flowing between different pixels, only when addressing electrode 16 energisings of certain pixel, just can flow into the sparking electrode 13 that is positioned at this pixel.But for reducing the influence to aperture opening ratio, the profile of auxiliary electrode 14 all is as straight line usually.Therefore, if the manufacture process of auxiliary electrode 14 is deviation or auxiliary electrode 14 generation problem in running to some extent, auxiliary electrode 14 fractures all take place probably, and make the resistance value when electric current flows between different pixels significantly increase (must pass through sparking electrode 13), and then cause the resistance value of different electrodes obviously different, and cause the deterioration of the display effect of electric slurry display panel.
In sum, existing electric slurry display panel still has the space that can improve, particularly with resistance-capacitance time constant, aperture opening ratio and broken string of the corresponding electrode pair of addressing electrode (comprise sparking electrode and auxiliary electrode the two) or the like.
Summary of the invention
Main purpose of the present invention is to solve above-mentioned prior art common deletion, and proposition has the electric slurry display panel of the electrode pair of low-resistance value and high aperture, and the method that can form this electric slurry display panel.Particularly solve prior art, because have transparent sparking electrode and opaque auxiliary electrode simultaneously, and the resistance-capacitance time constant that takes place such as can't reduce at defective.
Of the present invention one big feature is only to use the opaque electric conducting material of low-resistance value to form and the corresponding electrode pair of addressing electrode basically, particularly allow the transparent conductive material no longer be the necessary composition of electrode pair, thereby get rid of the disappearance that high resistance caused of transparent conductive material.
Another big feature of the present invention is the distribution mode that changes the opaque part of electrode pair, the profile of opaque sparking electrode is adjusted into the two-dimensional structure with most transparent apertures, as stepped configuration, chain shape profile and net form profile etc.Thereby, can allow on the one hand the distance between two sparking electrodes of same electrode pair in distance and the prior art between two opaque sparking electrodes of same electrode pair equate, and make the degree of discharge process keep necessarily.On the other hand, can allow in each structure cell opaque sparking electrode area occupied than still with prior art in opaque auxiliary electrode area occupied than quite, and can not cause harmful effect to the aperture opening ratio of electric slurry display panel.Again on the one hand, can utilize two-dimensional structure that the characteristic of more current channel can be provided again, defect influence such as opaque sparking electrode fracture of the part that institutes such as manufacture process deviation or operation problem may be caused or opening are reduced to minimum (because two-dimensional structure almost always can provide alternative current channel near fracture or opening).
The present invention at least still can comprise following feature; It is right to form opaque sparking electrode by the mode of overlapping transparent conductive material and opaque electric conducting material up and down; Can form electrode pair with transparent conductive material; Two right opaque sparking electrodes are made up of different profiles and material can to allow opaque sparking electrode; Can do a large amount of variations to profile, material and the relative position etc. of each right opaque sparking electrode of opaque sparking electrode.
Compared with prior art, the present invention has following effect:
(1) because the present invention uses opaque sparking electrode right, and the resistance value of existing opaque electric conducting material is significantly less than existing transparent conductive material.Therefore, structure compared with the auxiliary electrode of the sparking electrode of existing comprehensive use transparent conductive material and opaque electric conducting material, the opaque electric conducting material of direct use of the present invention forms sparking electrode to (with respect to the sparking electrode and the auxiliary electrode of prior art), understand the resistance value that meets with when between each pixel, flowing except taking into account the reduction electric current simultaneously, more can reduce electric current in the time of to discharge and understand the resistance value (because can not flow through the higher transparent conductive material of any resistance value) that meets with during to another electrode from an electrode stream, and then reduce the resistance-capacitance time constant, promote the performances such as reaction rate of whole electric slurry display panel.
(2) since the present invention can allow between two sparking electrodes two sparking electrodes in distance and the prior art distance quite or equate that the present invention can't produce harmful effect to discharge process.Further, because the present invention is no longer as fixedly allowing as the prior art opposite edges of two sparking electrodes be the straight line that is parallel to each other, and allow two distances between sparking electrode is what can change, and the profile that allows each sparking electrode can not be straight line or plane, so the present invention can utilize point discharge now as promoting discharging efficiency.
(3) because the present invention is can only provide as the one dimension lead of single conduction of current approach as the profile (particularly using the auxiliary electrode of low-resistance value) of restriction sparking electrode and auxiliary electrode as the prior art no longer, be the two-dimensional structure that most conduction of current approach can be provided but allow the profile of arbitrary sparking electrode.Therefore, even if deviation takes place in the processing procedure or use is consumed, the present invention also provides the pipeline of the conduction of current approach that breaks with another conduction of current approach replacement, so make electrode because of factors such as fracture can not normal operation possibility significantly reduce.
(4) because the present invention uses opaque sparking electrode right, so the present invention can promote the contrast (contrast) of whole electric slurry display panel.Certainly, in order to keep the aperture opening ratio of electric slurry display panel, the right area of opaque sparking electrode must suitably be adjusted.In any case, because the present invention also can allow the profile of each opaque sparking electrode be the two-dimensional structure with most transparent apertures, therefore the present invention always can promote the display effect of electric slurry display panel by allowing opaque part can not be gathered into one or one.
Description of drawings
Figure 1A and Figure 1B are respectively the schematic diagram of the part electrode structure of the structural representation of existing electric slurry display panel and existing electric slurry display panel;
Fig. 2 A to Fig. 2 N is several schematic diagrames that may structures of electric slurry display panel proposed by the invention;
Fig. 3 A to Fig. 3 B is the basic step schematic diagram of formation electric slurry display panel method proposed by the invention.
Symbol description among the figure
11 first substrates, 12 second substrates
13 sparking electrodes, 14 auxiliary electrodes
15 black line 16 addressing electrodes
17 lure electrics layer 18 fluorescent layers
21 first substrates, 22 second substrates
23 pixels, 24 opaque sparking electrodes are right
241 first opaque sparking electrodes
242 second opaque sparking electrodes
31 prepare square 32 forms square
33 integrate square 34 materials prepares square
35 patterning moulding squares
Embodiment
A preferred embodiment of the present invention is an electric slurry display panel, shown in Fig. 2 A, comprises: first substrate 21, second substrate 22, most pixels (pixel) 23 and most opaque sparking electrodes are to 24.
Wherein, first substrate 21 and second substrate 22 are the header board that is separated from each other (front plate) and back plate (rear plate) of prior art, and these pixels 23 are between first substrate 21 and second substrate 22.Present embodiment is not partly made change at these, these details partly and prior art quite (therefore, all icons also the general no longer many describe).Relatively, present embodiment focuses on these opaque sparking electrodes to 24.These opaque sparking electrodes are positioned at the surface of first substrate 21 in the face of second substrate 22 to 24, and 24 pairs of arbitrary opaque sparking electrodes are all by most pixels 23, and arbitrary pixel 23 also all has a pair of opaque sparking electrode to pass through 24.At this, each opaque sparking electrode comprises the first opaque sparking electrode 241 and the second opaque sparking electrode 242 that is separated from each other all at least to 24.In addition, in same pixel 23, opaque sparking electrode to the 24 first opaque sparking electrodes 241 that comprised and the second opaque sparking electrode 242 the two profile and relative distance etc. can be identical also can be inequality; And, between different pixels 23, opaque sparking electrode to the 24 first opaque sparking electrodes 241 that comprised and the second opaque sparking electrode 242 the two profile and relative distance etc. also all be can be identical also can be inequality.
In other words, compared with prior art (as Figure 1A and Figure 1B), one of present embodiment are characterised in that greatly having only opaque sparking electrode is essential to 24, and transparent sparking electrode is to being not essential.In fact, after opaque sparking electrode is suitably adjusted 24 profile and distribution etc., in arbitrary pixel 23 of present embodiment, all still can not exist any and opaque sparking electrode to the 24 transparent sparking electrodes that electrically contact.In other words, in the present embodiment,, can have only opaque electrode in each pixel 23 if disregard the part of addressing electrode.Certainly, arbitrary opaque electrode also can be overlapping up and down and form by transparent material and opaque material, present embodiment is only required opaque sparking electrode to 24 existence, to 24 material and generation type etc., is not the emphasis of present embodiment as for opaque sparking electrode.
Further, shown in Fig. 2 B,, and then make the aperture opening ratio of electric slurry display panel descend because opaque sparking electrode can hinder passing through of frequency modulated light line to 24.Therefore, present embodiment may be limited in a certain pixel 23, opaque sparking electrode to 24 therewith the overlapped area of pixel 23 less than 25 percent of this elemental area.
Further, shown in Fig. 2 C and Fig. 2 D, because the distance between the first opaque sparking electrode 241 and the second opaque sparking electrode 242 can have influence on discharge odds, strength of discharge and discharge required voltage or the like strongly.Therefore, for instance, present embodiment may be limited in a certain pixel 23, the distance that the first opaque sparking electrode 241 and the second opaque sparking electrode are 242, less than 1/5th of the length of a certain side that intersects with these opaque sparking electrodes 241/242 of this pixel 23, or even 1/10th.Certainly, when the profile of each sparking electrode 241/242 was not linearity, distance was meant nearest distance between two sparking electrodes between so-called sparking electrode.At this, a simple distance limit condition is to allow distance between the first opaque sparking electrode 241 and the second opaque sparking electrode 242, with distance between two sparking electrodes in the prior art quite or even equate.Certainly, if the length of the both sides that intersect with these opaque sparking electrodes 241/242 of this pixel 23 is inequality, present embodiment can limit must be simultaneously less than the certain proportion of the length of these both sides, only also can limit certain proportion less than the length of any side.
In addition, because the existing picture of so-called conductor tip discharge is arranged on the electromagnetism, point out as the tip that profile discharges easily than profile as the plane.Therefore, shown in Fig. 2 E, in a certain pixel 23, the distance that the first opaque sparking electrode 241 and the second opaque sparking electrode are 242, direction along a certain side that does not intersect with these opaque sparking electrodes 241/242 of parallel this pixel, can become cyclic variation, thereby, preferentially excite discharge in the shortest part of phase mutual edge distance.Certainly, utilize point discharge picture now, the edge that only needs certain opaque sparking electrode 241/242 is not that plane or straight line get final product, and does not need the edge of the two to adjust to each other apart from being cyclic variation.Therefore, present embodiment also may be limited in certain pixel 23, the first opaque sparking electrode 241 be crooked uneven in the face of a side of the second opaque sparking electrode 242, and perhaps (or and) second opaque sparking electrode 242 be the bending injustice in the face of a side of the first opaque sparking electrode 241.
In addition, because process deviation or factor such as running consume etc., and cause disappearance such as lead rupture at tending in the prior art.Shown in Fig. 2 F and Fig. 2 G, present embodiment still can be in certain pixel 23, introduce the notion of double loop (multiloop), restriction is when the opaque sparking electrode of a certain side of this pixel and these 241/242 is crossing, and the straight line of arbitrary parallel this side all has at least two intersection points with the first opaque sparking electrode 241; Or restriction is when the opaque sparking electrode of a certain side of this pixel and these 241/242 is crossing, and the straight line of arbitrary parallel this side all has at least two intersection points with the second opaque sparking electrode 242.In other words, present embodiment is that the profile that still can limit a certain at least opaque sparking electrode 241/242 is a two-dimensional silhouette.Certainly, also can limit all has at least two intersection points with the first opaque sparking electrode 241 and the second opaque not sparking electrode 242 simultaneously, and each straight line that also can limit the both sides of intersecting with parallel this pixel and these opaque sparking electrodes 241/242 all has at least two intersection points.
Certainly, providing the mode of at least two intersection points, can be the width that increases these opaque sparking electrodes 241/242, also can be to allow the profile of the first opaque sparking electrode 241 and the profile of the second opaque sparking electrode 242 all comprise most transparent apertures.This example does not limit these details, but consider influence (or say and consider of the influence of opaque sparking electrode) to the display effect of 24 pairs of electric slurry display panels to aperture opening ratio, opaque sparking electrode to the certain prerequisite of 24 areas under, using the profile with most transparent apertures is the reasonable practice (because opaque sparking electrode of the same area is dispersed in the bigger zone 24).Certainly, the area of these transparent apertures is big more, and the aperture opening ratio of whole electric slurry display panel is high more.For instance, present embodiment may be limited in a certain pixel 23, the area of these transparent apertures be not less than this pixel 23 area 75 percent.
For instance, shown in Fig. 2 H to Fig. 2 I, present embodiment may be limited in certain pixel, and the profile of certain opaque sparking electrode (241 or 242) at least can be for one of following; Netted, rail-like, wavy, the wavy and chain shape electrode that includes most holes.Certainly, shown in Fig. 2 J to Fig. 2 L, present embodiment also can be in a certain pixel 23, and the profile of a certain opaque sparking electrode (241 or 242) is the combination repeatedly of a special element, and this special element can be following one at least; Semicircle, half elliptic, arc, polygon, convex shape and taper thing shape.
For instance, example shown in Fig. 2 M and Fig. 2 N for when the notion of the notion of comprehensive double loop (multiloop), point discharge when controlling the demand of aperture opening ratio, according to practical application present embodiment that experimental data produced when the display panels, two kinds of possible opaque sparking electrode profiles.
In any case, it must be emphasized that present embodiment not strictness limit the shape of these opaque sparking electrodes (241 and/or 242), the correlation of the shape between these opaque sparking electrodes (241 and 242) more without limits.The most basic restrictive condition of present embodiment is that opaque sparking electrode is to 24, further may change is that the profile of these opaque sparking electrodes (241 and/or 242) is a two-dimensional silhouette, and further may change the profile that is only these opaque sparking electrodes (241 and/or 242) again is above-mentioned profile.
Another preferred embodiment of the present invention is a kind of method that forms electric slurry display panel, as shown in Figure 3A, comprises following basic step at least:
As prepare shown in the square 31, first substrate and second substrate are provided.
As form shown in the square 32, form most first structures and most opaque sparking electrode on the first surface of first substrate, and form most second structures on the second surface of second substrate.At this, arbitrary opaque sparking electrode is to all having an opaque sparking electrode to passing through by most first structures and arbitrary first structure.And arbitrary opaque sparking electrode is to comprising the first opaque sparking electrode and the second opaque sparking electrode that is separated from each other all at least.
As integrate shown in the square 33, cover on second substrate and the first surface, make these first structures, these second structures form most pixels to combining between first substrate and second substrate with these opaque sparking electrodes.
Certainly, because transparent conductive material is a material commonly used such as electric slurry display panel and display panels, therefore shown in Fig. 3 B, these opaque sparking electrodes can also be to form with the following step.
Prepare shown in the square 34 as material, form transparent material layer on the first surface of first substrate, and form the opaque material layer on transparent material layer.
Shown in patterning moulding square 35, use single light shield patterning opaque material layer and transparent material layer simultaneously, thereby form by overlapping these opaque sparking electrodes that form about opaque material and the transparent material.
Certainly, as what previous embodiment discussed, the profile of opaque sparking electrode still can have many variations with distribution, will no longer repeat statement at this.Wherein, two the most basic variations are respectively:
(1) in order to ensure the aperture opening ratio of electric slurry display panel, in arbitrary pixel, the right area of opaque sparking electrode is less than 1/10th of this elemental area.
(2) in order to ensure the normal operation of discharge process, in arbitrary pixel, the minimum range between right two the opaque sparking electrodes of same opaque sparking electrode, intersect less than pixel and these opaque sparking electrodes a side length 1/10th.
The above is preferred embodiment of the present invention only, is not in order to limit protection scope of the present invention; All other do not break away from the equivalence of being finished under the disclosed spirit and changes or modification, all should be included in the scope of claims.
Claims (10)
1. an electric slurry display panel is characterized in that, comprises:
One first substrate;
One second substrate, this second substrate is faced mutually with this first substrate but is separated from each other;
A most pixel, those pixels are between this first substrate and this second substrate; And
Most opaque sparking electrodes are right, those opaque sparking electrodes are to being positioned at the surface of this first real estate to this second substrate, arbitrary this opaque sparking electrode is to all having this opaque sparking electrode to passing through by most these pixels and arbitrary this pixel, and arbitrary this opaque sparking electrode is to comprising one first opaque sparking electrode and the one second opaque sparking electrode that is separated from each other all at least.
2. electric slurry display panel as claimed in claim 1 is characterized in that, in a certain this pixel, the overlapping area of this opaque sparking electrode pair and this pixel is less than 25 percent of this elemental area.
3. electric slurry display panel as claimed in claim 1, it is characterized in that, in a certain this pixel, the distance between this first opaque sparking electrode and this second opaque sparking electrode is less than 1/5th of the length of a certain side that intersects with those opaque sparking electrodes of this pixel.
4. electric slurry display panel as claimed in claim 1, it is characterized in that, in a certain this pixel, the distance between this first opaque sparking electrode and this second opaque sparking electrode is less than 1/10th of the length of a certain side that intersects with those opaque sparking electrodes of this pixel.
5. electric slurry display panel as claimed in claim 1 is characterized in that, a certain this opaque sparking electrode centering, a profile of this first opaque sparking electrode and a profile of this second opaque sparking electrode all comprise most transparent apertures.
6. electric slurry display panel as claimed in claim 5 is characterized in that, in a certain this pixel, the area of those transparent apertures be not less than this pixel area 75 percent.
7. a method that forms electric slurry display panel is characterized in that, comprises:
One first substrate and one second substrate are provided;
Form most first structures and most opaque sparking electrode on a first surface of this first substrate, and form most second structures on a second surface of this second substrate, to all one this opaque sparking electrode all being arranged to passing through by most these first structures and arbitrary this first structure, arbitrary this opaque sparking electrode is to comprising one first opaque sparking electrode and the one second opaque sparking electrode that is separated from each other all at least at this arbitrary this opaque sparking electrode; And
Cover this second substrate on this first surface, make those first structures, those second structures form most pixels to combining between this first substrate and this second substrate with those opaque sparking electrodes.
8. the method for formation electric slurry display panel as claimed in claim 7 is characterized in that, the formation step of those opaque sparking electrodes comprises at least;
Form a transparent material layer on this first surface of this first substrate;
Form an opaque material layer on this transparent material layer; And
Use single light shield this opaque material layer of patterning and this transparent material layer simultaneously, form by overlapping those opaque sparking electrodes that form about opaque material and the transparent material.
9. the method for formation electric slurry display panel as claimed in claim 7 is characterized in that, makes in arbitrary this pixel, and the area that this opaque sparking electrode is right is less than 1/10th of the area of this pixel.
10. the method for formation electric slurry display panel as claimed in claim 7, it is characterized in that, make in arbitrary this pixel, minimum range between right two the opaque sparking electrodes of same this opaque sparking electrode, 1/10th of the length of a side that intersects less than this pixel and those opaque sparking electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031238688A CN1319105C (en) | 2003-05-21 | 2003-05-21 | Plasma display panel and its forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031238688A CN1319105C (en) | 2003-05-21 | 2003-05-21 | Plasma display panel and its forming method |
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| Publication Number | Publication Date |
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| CN1549294A true CN1549294A (en) | 2004-11-24 |
| CN1319105C CN1319105C (en) | 2007-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031238688A Expired - Fee Related CN1319105C (en) | 2003-05-21 | 2003-05-21 | Plasma display panel and its forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US554179A (en) * | 1896-02-04 | Baby-walker | ||
| JP3224486B2 (en) * | 1995-03-15 | 2001-10-29 | パイオニア株式会社 | Surface discharge type plasma display panel |
| JPH09283028A (en) * | 1996-04-17 | 1997-10-31 | Matsushita Electron Corp | Ac type plasma display panel |
| JPH10241577A (en) * | 1997-02-28 | 1998-09-11 | Hitachi Ltd | Plasma display panel and display device using the panel |
| KR100512796B1 (en) * | 1998-01-12 | 2005-11-08 | 엘지전자 주식회사 | Sustain electrode structure of plasma display device |
| US6281628B1 (en) * | 1998-02-13 | 2001-08-28 | Lg Electronics Inc. | Plasma display panel and a driving method thereof |
| TW480513B (en) * | 1999-10-19 | 2002-03-21 | Matsushita Electric Ind Co Ltd | A metal electrode manufacturing method |
| JP4467830B2 (en) * | 2000-04-05 | 2010-05-26 | パナソニック株式会社 | LCD panel |
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Granted publication date: 20070530 Termination date: 20130521 |