CN1658716A - Manufacturing method and structure of organic luminous display panel - Google Patents
Manufacturing method and structure of organic luminous display panel Download PDFInfo
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- CN1658716A CN1658716A CN 200410005031 CN200410005031A CN1658716A CN 1658716 A CN1658716 A CN 1658716A CN 200410005031 CN200410005031 CN 200410005031 CN 200410005031 A CN200410005031 A CN 200410005031A CN 1658716 A CN1658716 A CN 1658716A
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- electroluminescence display
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Abstract
A manufacturing method and structure of the organ light display panel. Use the figure set to reduce the covered area of the transparent electrode in the picture pels area without lighting on the panel, and make the anode and the cathode of the organ light diode respectively connect with the transparent electrode and metal electrode. It still partly has the property of the organ light diode. Change the picture pels area of born electro-property isolated without lighting into the picture area property that can provide the capacitance, when the data circuitry is charged. Therefore it makes the lighting situation of the panel homogeneous, and has efficiently improved the bright line objection of the panel.
Description
Technical field
The present invention relates to a kind of method and structure of making organic electroluminescence display panel, particularly a kind of method and structure of improving organic electroluminescence display panel bright line problem.
Background technology
In recent years, in the industry of flat-panel screens, organic light emitting display (Organic Light EmittingDiode; OLED), and attracted attention gradually because of having self-luminosity, high brightness, super wide viewing angle, high reaction speed, low driving voltage and advantage such as in light weight.But the organic light emitting display occupation rate on market at present is still limited, therefore, each big display is made factory and all is devoted to look for best manufacture method, and to improve production qualification rate and product performance, expectation can impel organic light emitting display early in reaching universalness on the market.
In the existing organic electroluminescence display panel product, be generally and separate adjacent picture element, can use the design of electrode separation bar (electrode separation rib), electrode separation bar and basalis that utilization has insulation characterisitic are formed at not luminous picture element region, to reach the purpose of distinguishing with picture element region.
As shown in Figure 1, usually on display floater, except main viewing area (main panel) 100, periphery in main viewing area 100, have the viewing area of part specific image 102, zone 104 beyond in specific image 102 viewing areas then is all not luminous picture element region, simultaneously the circuit by main viewing area be connected state by main viewing area with the circuit of exterior domain.Yet because these are positioned at the existence of not luminous picture element region of 102 of the specific images of main viewing area 100 peripheries, in the time of will forming drive current by panel, having the part circuit is the difference of the not luminous picture element region (zone 104) through main viewing area 100 peripheries for process specific image 102 viewing areas and part circuit.
The structural design of above-mentioned specific image 102 viewing areas and luminous picture element region not then as shown in Figure 2, the basalis 220 with insulation on substrate 200 and anode metal sull 210 is distinguished picture element region 240 and not luminous picture element region 250 with electrode separation bar 230.Wherein picture element region 240 is the position of specific image 102 viewing areas among Fig. 1, and not luminous picture element region 250 then is the position in other zone 104 outside specific image 102 viewing areas.
In not luminous picture element region 250, because dielectric base layer 220 is arranged is isolated the anode metal sull 210 of connected state with cathodic metal layer 270, therefore when switching on the driving panel, do not have electric current by this not luminous picture element region 250, so the luminescent material storehouse 260 in not luminous picture element region 250 can be not luminous, do not have the characteristic of light-emitting diode.
If observe, as shown in Figure 3, be the partial array structure chart of an organic electroluminescence display panel with a simple panel array structure.Wherein not luminous picture element region (as the not luminous picture element region 250 of Fig. 2) that is arranged in the specific image periphery is promptly represented in zone 360, other zone 310 that drives with circuit 311, the zone 320 that drives with circuit 322, and 330 in the zone that drives with circuit 333 is all picture element region, and not luminous picture element zone 360 is communicated with by circuit 333 simultaneously with picture element region 330.
As mentioned above, with regard to an organic electroluminescence display panel, not luminous picture element region position does not have electric current to be passed through, so when with a fixed current 350 driver circuits, have identical electric current simultaneously by circuit 311, circuit 322 and circuit 333.But, and make that the capacitance summation when electric current passes through circuit 333 is little compared to circuit 311 and circuit 322 because there is the existence of dielectric base layer in zone 360.
Since when picture element drives, the circuit 333 less for capacitance, and its voltage rise time is shorter, therefore, generally speaking, when utilizing a current drives when lighting picture element, the higher phenomenon of brightness (brightness) will appear in the picture element region with circuit 333 processes of smaller capacitive value.So in Fig. 3, the luminous display brightness in the picture element zone 330 that data circuit 333 passes through will be than picture element zone 310 and picture element zone 320 height.
Therefore, by above-mentioned phenomenon as can be known, when with a current drives one organic electroluminescence display panel, if a communication line is just for by the not luminous picture element region between the specific image of panel periphery the time, then this circuit will have the capacitance little than other circuit.So concerning the main viewing area of an organic electroluminescence display panel, the viewing area that every link tester with smaller capacitive value is crossed all has the higher phenomenon of brightness and occurs, thereby has caused the panel finished product that the defective of bright line is arranged.
So, a kind ofly do not influence original basic processing procedure and type of drive, and can improve the organic electroluminescence display panel manufacture method and the structure of above-mentioned panel bright line problem, just have suitable exigence.
Summary of the invention
Purpose of the present invention is for providing a kind of manufacture method and structure of improving the bright line problem of organic electroluminescence display panel.The not luminous picture element region that utilization is fully electrically isolated with the script of specific image periphery is made into and has the characteristic that part electrically communicates.Therefore, these not luminous picture element regions also can provide required capacitance by the circuit on it to one.So, can make by these capacitances that circuit had of luminous picture element region not, not by these capacitances that circuit had of luminous picture element region not, difference to each other reduces compared to other.Thereby, make comparatively homogeneous of the luminous situation of panel, effectively improve the bright line defective of panel.
According to above-mentioned purpose, the present invention discloses a kind of manufacture method and structure of organic electroluminescence display panel.Utilize the basalis area of the not luminous picture element region that reduces the specific image periphery, separate the picture element luminous zone to form basalis and electrode separation bar, and among the basalis of not luminous picture element region position, design a plurality of openings, with the exposed portions serve transparency electrode, and reduce the area that transparency electrode is capped.Then, the storehouse of luminous organic material and cathodic metal layer just can pass through these openings, and also can be connected to some extent with the transparency electrode part in not luminous picture element region position, make not luminous picture element region still can partly have the characteristic of Organic Light Emitting Diode.
The manufacture method of above-mentioned organic electroluminescence display panel comprises at least: form a transparency electrode on a substrate; Be coated with a basalis on this transparency electrode; This basalis of patterning to be forming picture element region and not luminous picture element region, and this not this basalis of luminous picture element region also comprise a single radial cut or a plurality of opening, to expose this transparency electrode in this single radial cut or this a plurality of openings; Form an electrode separation bar on this basalis of part; Evaporation one luminescent material is stacked on this transparency electrode and this electrode separation bar and among this single radial cut or this a plurality of openings; And evaporation one first metal electrode is on this luminescent material storehouse.
The structure of above-mentioned organic electroluminescence display panel comprises at least: a transparency carrier; One transparent anode electrode is positioned on this transparency carrier; One basalis, be positioned on this transparency electrode of luminous picture element region not, wherein have a single radial cut or a plurality of opening on this basalis, with in those this transparent anode electrodes of not luminous picture element region exposed portions serve, and this single radial cut or this a plurality of openings are arranged in those not luminous picture element regions of this organic electroluminescence display panel; One electrode separation bar is positioned at those not on this basalis of luminous picture element region; One luminescent material storehouse is positioned on this transparency electrode and this electrode separation bar; And a cathodic metal electrode, be positioned on this luminescent material storehouse.
So, with making fully electrically isolated originally not luminous picture element region, change the capacitance in the time of also line charging can being provided into.
According to method of the present invention, can not change under the condition of original processing procedure fully, reach the purpose of improving the bright line problem.
Description of drawings
For above-mentioned feature of the present invention, method, purpose and advantage can be become apparent, conjunction with figs. is illustrated as follows:
Fig. 1 is the viewing area distribution schematic diagram of an organic electroluminescence display panel;
Fig. 2 is the specific image of organic electroluminescence display panel in the known technology and the structure cross sectional representation of the not luminous picture element region of periphery position;
Fig. 3 is the partial array structural representation of organic electroluminescence display panel in the known technology;
Fig. 4 A～4B is the cross sectional representation of organic electroluminescence display panel manufacturing process of the present invention; And
Fig. 5 is the partial array structural representation that utilizes organic electroluminescence display panel of the present invention.
Wherein, description of reference numerals is as follows:
100: main viewing area
102: specific image
104,480: the zone
200,400: substrate
210,410: the anode metal sull
220,420: basalis
230,450: the electrode separation bar
240: picture element region
250,430: not luminous picture element region
260,460: the luminescent material storehouse
270,470: the cathodic metal layer
310,320,330,360,530: the zone
311,322,333,511,522,533: circuit
350,540: electric current
440: opening
Embodiment
The present invention is a kind of setting that improves because of the not luminous picture element region of specific image periphery on the panel, and causes the manufacture method and the structure of the organic electroluminescence display panel of panel bright line problem.By reducing the position area that basalis occupied, reducing the area that transparency electrode is capped, and make the part negative electrode electric conducting material on the not luminous picture element region can be fully by not isolated, and can electric current by the time partition capacitance value is provided.
So, the circuit of the not luminous picture element region by the specific image periphery is originally had lower capacitance improved, and the otherness of the capacitance that each circuit is had each other on the panel is reduced.So the Luminance Distribution of panel is more even, the bright line problem is improved.
Below will method of the present invention be described in detail with a preferred embodiment.
With reference to Fig. 4 A～4B, Fig. 4 A～4B is the cross sectional representation of organic electroluminescence display panel manufacturing process of the present invention.
With reference to Fig. 4 A, at first on substrate 400, make anode metal sull 410 as transparency electrode, and with gold-tinted development setting figure, wherein substrate 400 is constituted by transparent material, for example be glass, plastics, anode metal sull 410 then uses transparent conductive material, for example indium tin oxide (ITO) or indium-zinc oxide (IZO).Then be coated with last layer basalis 420, material is selected for use and is that insulating material, this insulating material for example can be positive photoresistance or negative photoresist, or is phenolic resins (Novolak), polyimides (Polyimide; PI), epoxy resin (epoxy) or acrylic resin (Acrylic resin) etc., and develop with gold-tinted and to set figure.
The figure of basalis 420 is set, except setting out not luminous picture element region 430, the manufacture method of organic electroluminescence display panel of the present invention is also with basalis 420 figures in the not luminous picture element region 430, be designed to have an opening 440, and expose anode metal sull 410, shown in Fig. 4 A.
Then, coating one deck insulating material is as electrode separation bar 450, this insulating material equally for example can be positive photoresistance or negative photoresist, or is phenolic resins, polyimides, epoxy resin or acrylic resin etc., and forms a up big and down small special construction figure with the gold-tinted development.
Then,, make the luminescent material storehouse 460 and cathodic metal layer 470 that the multilayer luminous organic material is constituted successively, lay respectively on anode metal sull 410, the electrode separation bar 450 in the evaporation mode with reference to Fig. 4 B, and among the opening 440.The organic light emission material that wherein includes fluorescence or phosphorescence in the luminescent material storehouse 460, and organic or inorganic materials such as hole/electronics injection and hole/electric transmission.Cathodic metal then uses the good metal of conductivity, for example: aluminium (Al), silver-colored magnesium alloy (AgMg) or lithium-aluminium alloy (LiAl) etc.
Because the design of the structure graph of basalis 420, the original position area that the basalis 420 of existing making is occupied reduces.Utilize the figure of opening 440 to set, basalis 420 occupies whole not luminous picture element region 430 originally, is reduced to and only occupies zone 480.
And in opening 440 positions, then because have luminescent material storehouse 460 and cathodic metal layer 470 on anode metal sull 410, to be electrical connected.So when the current drives assembly, electric current is during by not luminous picture element region 430, also can be by the design of opening 440, and the part of the opening 440 by not luminous picture element region 430.Therefore, not luminous picture element region can partly have the characteristic of light-emitting diode, and can provide the partition capacitance value by the circuit on it to one.In addition, though fully electrically isolated originally not luminous picture element region 430, the situation that has part electrically to communicate according to the inventive method occurs, but passes through the drive controlling of sweep circuit (scan line), and opening 440 positions that still can keep not luminous picture element region 430 present the state of not luminous demonstration.
With reference to Fig. 5, Fig. 5 is the partial array structure chart that utilizes the organic electroluminescence display panel that the present invention makes.Wherein zone 530 is not luminous picture element region that has basalis to exist, and other zone then is a picture element region.When driving the assembly of the present invention's making with an electric current 540, though the existence of basalis is arranged in 530 positions, not luminous picture element zone, because of the isolated electrical zone of exposed portions serve among the present invention, so also can provide the partition capacitance value to the circuit that passes through.And make a capacitance that is had by the circuit 533 in not luminous picture element zone 530, compared to other capacitance of being had of the circuit 522 by not luminous picture element zone 530 and circuit 511 not, otherness reduces each other.
So, can allow the capacitance size that each circuit has on the display floater more average, then the situation of electric current by each circuit homogeneous more.Therefore, can not cause the luminous degree varies of the picture element region that each link tester is crossed and cause the panel luminance inequality, cause the problem of bright line.
Though the present invention discloses as above with embodiment; right its is not in order to qualification the present invention, any those of ordinary skill in the art, without departing from the spirit and scope of the present invention; when can doing various changes and modification, so protection scope of the present invention defines and is as the criterion when looking claim.
Claims (29)
1. the manufacture method of an organic electroluminescence display panel comprises:
Form a transparency electrode on a substrate;
Be coated with a basalis on this transparency electrode;
This basalis of patterning to be forming picture element region and not luminous picture element region, and this not this basalis of luminous picture element region also comprise a single radial cut or a plurality of opening, to expose this transparency electrode in this single radial cut or this a plurality of openings;
Form an electrode separation bar on this basalis of part;
Evaporation one luminescent material is stacked on this transparency electrode and this electrode separation bar and among this single radial cut or this a plurality of openings; And
Evaporation one first metal electrode is on this luminescent material storehouse.
2. the manufacture method of organic electroluminescence display panel as claimed in claim 1 is characterized in that above-mentioned transparency electrode is an anode electrode.
3. the manufacture method of organic electroluminescence display panel as claimed in claim 1 is characterized in that the material of above-mentioned transparency electrode comprises indium tin oxide or indium-zinc oxide.
4. the manufacture method of organic electroluminescence display panel as claimed in claim 1 is characterized in that above-mentioned basalis is made of insulating material.
5. the manufacture method of organic electroluminescence display panel as claimed in claim 4 is characterized in that above-mentioned insulating material is positive photoresistance or negative photoresist.
6. the manufacture method of organic electroluminescence display panel as claimed in claim 4 is characterized in that above-mentioned insulating material comprises group's selection one that phenolic resins, polyimides, epoxy resin and acrylic resin constitute.
7. the manufacture method of organic electroluminescence display panel as claimed in claim 1 is characterized in that above-mentioned basalis is positioned at the not luminous picture element of the periphery zone in addition, main viewing area of this organic electroluminescence display panel.
8. the manufacture method of organic electroluminescence display panel as claimed in claim 7 is characterized in that above-mentioned this single radial cut or this a plurality of openings are between this basalis on the not luminous picture element of this periphery zone of this organic electroluminescence display panel.
9. the manufacture method of organic electroluminescence display panel as claimed in claim 1 is characterized in that above-mentioned electrode separation bar is made of insulating material.
10. the manufacture method of organic electroluminescence display panel as claimed in claim 9 is characterized in that above-mentioned insulating material is positive photoresistance or negative photoresist.
11. the manufacture method of organic electroluminescence display panel as claimed in claim 9 is characterized in that above-mentioned insulating material comprises group's selection one that phenolic resins, polyimides, epoxy resin and acrylic resin constitute.
12. the manufacture method of organic electroluminescence display panel as claimed in claim 1 is characterized in that above-mentioned luminescent material storehouse comprises fluorescence organic luminescent substance or phosphorescence organic luminescent substance.
13. the manufacture method of organic electroluminescence display panel as claimed in claim 12, it is characterized in that above-mentioned luminescent material storehouse also comprises the group that hole injected material, hole transport material, electronics injected material and electric transmission material are constituted, or part group wherein.
14. the manufacture method of organic electroluminescence display panel as claimed in claim 1 is characterized in that above-mentioned first metal electrode is a metallic cathode.
15. the manufacture method of organic electroluminescence display panel as claimed in claim 14, wherein above-mentioned metallic cathode is made of aluminium, silver-colored magnesium alloy, lithium-aluminium alloy or other metal material.
16. an organic electroluminescence display panel structure comprises at least:
One transparency carrier;
One transparent anode electrode is positioned on this transparency carrier;
One basalis, be positioned on this transparency electrode of luminous picture element region not, wherein have a single radial cut or a plurality of opening on this basalis, with in these this transparent anode electrodes of not luminous picture element region exposed portions serve, and this single radial cut or this a plurality of openings are arranged in these not luminous picture element regions of this organic electroluminescence display panel;
One electrode separation bar is positioned at these not on this basalis of luminous picture element region;
One luminescent material storehouse is positioned on this transparency electrode and this electrode separation bar; And
One cathodic metal electrode is positioned on this luminescent material storehouse.
17. organic electroluminescence display panel structure as claimed in claim 16 is characterized in that the material of above-mentioned transparent anode electrode comprises indium tin oxide or indium-zinc oxide.
18. organic electroluminescence display panel structure as claimed in claim 16 is characterized in that above-mentioned basalis is made of insulating material.
19. organic electroluminescence display panel structure as claimed in claim 18 is characterized in that above-mentioned insulating material is positive photoresistance or negative photoresist.
20. organic electroluminescence display panel structure as claimed in claim 18 is characterized in that above-mentioned insulating material comprises group's selection one that phenolic resins, polyimides, epoxy resin and acrylic resin constitute.
21. organic electroluminescence display panel structure as claimed in claim 16 is characterized in that above-mentioned electrode separation bar is made of insulating material.
22. organic electroluminescence display panel structure as claimed in claim 21 is characterized in that above-mentioned insulating material is positive photoresistance or negative photoresist.
23. organic electroluminescence display panel structure as claimed in claim 21 is characterized in that above-mentioned insulating material comprises group's selection one that phenolic resins, polyimides, epoxy resin and acrylic resin constitute.
24. organic electroluminescence display panel structure as claimed in claim 16 is characterized in that above-mentioned these not luminous picture element regions are for comprising this basalis, this electrode separation bar and this single radial cut or this a plurality of openings.
25. organic electroluminescence display panel structure as claimed in claim 16 is characterized in that above-mentioned luminescent material storehouse also is positioned among this single radial cut or this a plurality of openings.
26. organic electroluminescence display panel structure as claimed in claim 16 is characterized in that above-mentioned luminescent material storehouse comprises fluorescence organic luminescent substance or phosphorescence organic luminescent substance.
27. organic electroluminescence display panel structure as claimed in claim 26 is characterized in that above-mentioned luminescent material storehouse also comprises the group that hole injected material, hole transport material, electronics injected material and electric transmission material are constituted, or part group wherein.
28. organic electroluminescence display panel structure as claimed in claim 16 is characterized in that above-mentioned cathodic metal electrode also is positioned among this single radial cut or this a plurality of openings.
29. organic electroluminescence display panel structure as claimed in claim 16 is characterized in that above-mentioned cathodic metal electrode is made of aluminium, silver-colored magnesium alloy, lithium-aluminium alloy or other metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100050312A CN100411222C (en) | 2004-02-16 | 2004-02-16 | Manufacturing method and structure of organic luminous display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100050312A CN100411222C (en) | 2004-02-16 | 2004-02-16 | Manufacturing method and structure of organic luminous display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1658716A true CN1658716A (en) | 2005-08-24 |
| CN100411222C CN100411222C (en) | 2008-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100050312A Expired - Fee Related CN100411222C (en) | 2004-02-16 | 2004-02-16 | Manufacturing method and structure of organic luminous display panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016019699A1 (en) * | 2014-08-04 | 2016-02-11 | 石益坚 | Capacitor-driven electroluminescent display and method of manufacturing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW511298B (en) * | 1999-12-15 | 2002-11-21 | Semiconductor Energy Lab | EL display device |
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- 2004-02-16 CN CNB2004100050312A patent/CN100411222C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016019699A1 (en) * | 2014-08-04 | 2016-02-11 | 石益坚 | Capacitor-driven electroluminescent display and method of manufacturing same |
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| Publication number | Publication date |
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| CN100411222C (en) | 2008-08-13 |
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Effective date of registration: 20081205 Address after: Taipei city of Taiwan Province Patentee after: Dongyuan Motor Co., Ltd. Address before: Taipei city of Taiwan Province Patentee before: Dongyuan Laser Science & Technology Co., Ltd. |
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