CN203883009U - Oled display panel - Google Patents
Oled display panel Download PDFInfo
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- CN203883009U CN203883009U CN201420282295.1U CN201420282295U CN203883009U CN 203883009 U CN203883009 U CN 203883009U CN 201420282295 U CN201420282295 U CN 201420282295U CN 203883009 U CN203883009 U CN 203883009U
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- Prior art keywords
- oled display
- display floater
- oled
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- encapsulated layer
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- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000010410 layer Substances 0.000 claims description 68
- 238000009413 insulation Methods 0.000 claims description 14
- 239000011229 interlayer Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 208000034699 Vitreous floaters Diseases 0.000 claims 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 abstract description 16
- 239000001301 oxygen Substances 0.000 abstract description 16
- 238000005538 encapsulation Methods 0.000 abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000010408 film Substances 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 7
- 238000005530 etching Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 101100400452 Caenorhabditis elegans map-2 gene Proteins 0.000 description 1
- 229910004205 SiNX Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
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- 229910052682 stishovite Inorganic materials 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
The utility model relates to an OLED display panel. The OLED display panel is provided with a substrate, an OLED device located on the substrate and encapsulation layers covering the OLED device; peripheral areas of the OLED display panel are provided with non-planar pattern structures; and the encapsulation layers cover the non-planar pattern structures. According to the OLED display panel of the utility model, the peripheral portions of the OLED display panel form non-planar pattern structures such as grooves or protrusions, and therefore, the binding force of the side edge encapsulation layers of the device and the substrate can be improved, and a side edge encapsulation effect can be improved, and influence of oxygen, vapor and the like, on the performance of the device can be decreased, and the performance of the device can be improved, and the service life of the OLED display panel can be prolonged.
Description
Technical field
The utility model relates to organic field of photoelectric devices, particularly a kind of OLED display floater.
Background technology
OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) device has the excellent properties such as fast response time, visual angle are wide, the high and low power consumption of brightness, and be selfluminous element, be considered to the Display Technique of future generation that tool has great prospects for development.
OLED device is stacked multilayer organic layer between transparent anode and negative electrode, in the time adding forward voltage on device, under the effect of external electric field, hole and electronics are injected in organic molecule, macromolecule layer by anode and negative electrode respectively, charge carrier with opposite charges moves in little molecule, macromolecule layer, compound at luminescent layer, form exciton, exciton is passed to light emitting molecule energy, excitation electron is to excitation state, excited energy, by Radiation-induced deactivation, produces photon, forms luminous.For improving cathode electronics injection efficiency, need to reduce negative electrode work function, conventionally select ripple metal alive, for example magnesium, silver, but the steam that magnesium, Yin Yi and infiltration are come in, oxygen react.Hole transmission layer (HTL) and electron transfer layer (ETL) are also very responsive to steam, oxygen in addition, are easy to decay, and cause component failure.Effectively encapsulation can prevent the immersion of steam and oxygen, prevents that organic material is aging, extends OLED device lifetime.Equally, flexible OLED must encapsulate, and mainly contains cover-plate type and thin-film package (TFE).Cover plate encapsulation comprises ultra-thin glass lid (ultra thin cover glass) material, film (film) material.Thin-film material is easy to realize the encapsulation of flexible OLED device.No matter but which kind of packaged type, all need to well block water for device surface and side, in encapsulation (barrier) structure and device contacts part, because the reasons such as interface contact and stress do not mate are the paths that a steam oxygen is invaded, directly affect the OLED life-span.
As shown in Figure 1, be OLED display floater of the prior art.On underlay substrate 1, there is resilient coating 2, on it, be respectively grid, gate insulation layer, source electrode, drain electrode, interlayer insulating film.On interlayer insulating film, there is anode 3, it on anode 3, is window insulating barrier, OLED device 4 is arranged in the opening of window insulating barrier and is electrically connected with anode 3, negative electrode 5 is positioned on window insulating barrier and OLED device 4 and with OLED device 4 and is electrically connected, encapsulated layer 6 is positioned on negative electrode 5, and encapsulated layer can be multilayer.In this OLED display floater, steam and oxygen immerse along the direction shown in arrow, react, thereby affect the OLED life-span with the part metals material in device.Prevent that organic material is aging, extend OLED device lifetime.
Therefore, in this area, be badly in need of a kind of impact that can avoid steam oxygen to invade, there is the oled panel structure compared with the long life.
Utility model content
(1) technical problem solving
The technical problem that the utility model solves is: how a kind of OLED display floater is provided, solves in prior art in encapsulating structure and device contacts part interface contact force and the unmatched problem of stress.
(2) technical scheme
For solving the problems of the technologies described above, the utility model embodiment provides a kind of OLED display floater, there is underlay substrate, on described underlay substrate, there is OLED device, on described OLED device, there is encapsulated layer, this OLED display floater has nonplanar graph structure on its neighboring area, and described encapsulated layer is covered in described nonplanar graph structure.
Wherein, described encapsulated layer is one or more layers.
Wherein, described nonplanar graph structure is groove, and the width w of described groove and the minimum thickness t of individual layer encapsulated layer meet the relation of w > t >=0.5w.
Wherein, described nonplanar graph structure is projection, and the minimum thickness t of the spacing d between described projection and individual layer encapsulated layer meets the relation of d > t >=0.5d.
Wherein, between described underlay substrate and described OLED device, also have successively resilient coating, grid, gate insulation layer, source-drain electrode, interlayer insulating film, described OLED device is positioned on described interlayer insulating film.
Wherein, described nonplanar graph structure is formed on described gate insulation layer.
Wherein, described gate insulation layer is silica and/or silicon nitride.
Wherein, the width w of described groove and the minimum thickness t of individual layer encapsulated layer meet the relation of t=0.5w.
Wherein, the minimum thickness t of the spacing d between described projection and individual layer encapsulated layer meets the relation of t=0.5d.
Wherein, the shape of cross section of described groove or projection is arc, triangle, rectangle or trapezoidal.
(3) beneficial effect
The OLED display floater that the utility model provides is by forming the nonplanar graph structure such as groove or projection in the marginal portion of display floater, reduced the impact on device performance such as oxygen vapor, and the performance of boost device has extended life-span of OLED display floater.
Brief description of the drawings
Fig. 1 is the OLED display panel structure schematic diagram that prior art provides;
Fig. 2 is OLED display panel structure schematic diagram of the present utility model;
Fig. 3 is nonplanar graph locations of structures schematic diagram in OLED display floater of the present utility model;
Fig. 4 represents the shape of cross section of the utility model further groove;
Fig. 5 represents the shape of cross section of the utility model protrusions;
Fig. 6 represents utility model nonplanar graph structure and encapsulated layer size relationship schematic diagram.
The Reference numeral using in above-mentioned accompanying drawing thes contents are as follows:
1: underlay substrate; 2: resilient coating; 3: anode; 4:OLED device; 5: negative electrode; 6: encapsulated layer; 7: nonplanar graph structure; 10: nonplanar graph structural region; 20: pixel cell.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
A kind of OLED display floater manufacture method that the utility model embodiment provides, make OLED display floater as shown in Figure 2, this oled panel comprises underlay substrate 1, has resilient coating 2 on underlay substrate 1, is respectively grid, gate insulation layer, source electrode, drain electrode, interlayer insulating film on it.On interlayer insulating film, there is anode 3, it on anode 3, is window insulating barrier, OLED device 4 is arranged in the opening of window insulating barrier and is electrically connected with anode 3, negative electrode 5 is positioned on window insulating barrier and OLED device 4 and with OLED device 4 and is electrically connected, encapsulated layer 6 is positioned on negative electrode 5, and encapsulated layer can be multilayer.This OLED display floater has nonplanar graph structure 7 on its neighboring area, is preferably projection or groove pattern, as shown in Figure 2 be that nonplanar graph structure is the situation of groove, nonplanar graph structure form position shown in Figure 3.
As shown in Figure 4, Figure 5, the shape of cross section of described groove or projection can be arc, triangle, rectangle or trapezoidal (comprising inverted trapezoidal).
OLED display floater of the present utility model is manufactured by the following method, first, on underlay substrate 1, forms and comprises resilient coating, grid layer, grid layer is graphically obtained to grid, then deposit inorganic insulation layer by PECVD, the material of this inorganic insulation layer can form for SiNx or SiO2 or both laminations, then carries out photoresist coating, exposure, develop, etching, at the etching edge in territory, device effective display area, so that marginal portion forms nonplanar figure, be preferably projection or groove pattern.While carrying out etching, both can on gate insulation layer, carry out etching, also can carry out etching at other layers.In the time of the layer of selective etching, preferably gate insulation layer preferably forms projection or groove on gate insulation layer, and the OLED forming like this improves in the face of having aspect stress more significantly.In the present embodiment, described nonplanar graph structure is groove, as shown in Figure 2.The formation position of groove is positioned at display floater neighboring area, and to be that effective display area is overseas enclose, referring to Fig. 3, wherein pixel cell 20 be positioned at OLED display floater by central area, nonplanar graph structural region 10 is positioned at the neighboring area of OLED display floater.
Then, carry out backboard process, form successively the step of active layer, source drain, planarization layer, transparent anode at the pixel region of display floater by the conventional method of this area, make subsequently pixel defining layer, and carry out organic layer and negative electrode evaporation, form OLED device.
Next at the pixel region of whole display floater and peripheral marginal portion deposition encapsulated layer, encapsulated layer can be one or more layers, nonplanar graph structure shown in encapsulated layer blank map 2, due to the existence of nonplanar graph structure, the path that oxygen and steam enter in device obviously extends, thus reduced oxygen and steam enter performance on OLED display floater and the impact in life-span.
In the time that nonplanar graph structure is groove, as shown in Fig. 6 (1), the width of groove is w, the minimum thickness of individual layer encapsulated layer is t, in a preferred embodiment, t and w meet the relation of w > t >=0.5w, now encapsulated layer can be realized the abundant filling to groove, make the immersion path long enough of oxygen and steam simultaneously, at one more in preferred embodiment, t=0.5w, under the identical situation of other factors, OLED display floater is now subject to the minimum that affects of oxygen and steam.
In the time that nonplanar graph structure is projection, as shown in Fig. 6 (2), spacing between projection is d, the minimum thickness of individual layer encapsulated layer is t, in a preferred embodiment, t and d meet the relation of d > t >=0.5d, now encapsulated layer can be realized the abundant filling to groove, make the immersion path long enough of oxygen and steam simultaneously, at one more in preferred embodiment, t=0.5d, under the identical situation of other factors, OLED display floater is now subject to the minimum that affects of oxygen and steam.
In the technical scheme of embodiment of the present utility model, by form the molded non-planar such as groove or projection in gate oxide or other layers, obviously extend the path of passing through of oxygen and steam etc., thereby reduce the impact on device performance such as oxygen vapor, simultaneously, by accurate restriction recess width, size relationship between distance and encapsulated layer between projection, further greatly reduce this impact, in addition, easily occur scribing precision in formation nonplanar graph structure on glass low, technique is difficult to be realized, spend high problem, and by form these nonplanar graph structures in gate insulation layer, can complete by etching or composition, dimensional accuracy is high, in technique, easily realize, spend low, and further improve the performance of OLED device aspect stress.
Above execution mode is only for illustrating the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that not departing from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (11)
1. an OLED display floater, there is underlay substrate, on described underlay substrate, there is OLED device, on described OLED device, there is encapsulated layer, it is characterized in that, this OLED display floater has nonplanar graph structure on its neighboring area, and described encapsulated layer is covered in described nonplanar graph structure.
2. OLED display floater as claimed in claim 1, is characterized in that, described encapsulated layer is one or more layers.
3. OLED display floater as claimed in claim 2, is characterized in that, described nonplanar graph structure is groove, and the width w of described groove and the minimum thickness t of individual layer encapsulated layer meet the relation of w > t >=0.5w.
4. OLED display floater as claimed in claim 2, is characterized in that, described nonplanar graph structure is projection, and the minimum thickness t of the spacing d between described projection and individual layer encapsulated layer meets the relation of d > t >=0.5d.
5. OLED display floater as claimed in claim 1, it is characterized in that, between described underlay substrate and described OLED device, also have successively resilient coating, grid, gate insulation layer, source-drain electrode, interlayer insulating film, described OLED device is positioned on described interlayer insulating film.
6. OLED display floater as claimed in claim 5, is characterized in that, described nonplanar graph structure is formed on described gate insulation layer.
7. OLED display floater as claimed in claim 5, is characterized in that, described gate insulation layer is silica and/or silicon nitride.
8. OLED display floater as claimed in claim 3, is characterized in that, the width w of described groove and the minimum thickness t of individual layer encapsulated layer meet the relation of t=0.5w.
9. OLED display floater as claimed in claim 4, is characterized in that, the minimum thickness t of the spacing d between described projection and individual layer encapsulated layer meets the relation of t=0.5d.
10. OLED display floater as claimed in claim 3, is further characterized in that, the shape of cross section of described groove is arc, triangle, rectangle or trapezoidal.
11. OLED display floaters as claimed in claim 4, are further characterized in that, the shape of cross section of described projection is arc, triangle, rectangle or trapezoidal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282295.1U CN203883009U (en) | 2014-05-29 | 2014-05-29 | Oled display panel |
| PCT/CN2014/088381 WO2015180366A1 (en) | 2014-05-29 | 2014-10-11 | Oled display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282295.1U CN203883009U (en) | 2014-05-29 | 2014-05-29 | Oled display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203883009U true CN203883009U (en) | 2014-10-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420282295.1U Expired - Lifetime CN203883009U (en) | 2014-05-29 | 2014-05-29 | Oled display panel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203883009U (en) |
| WO (1) | WO2015180366A1 (en) |
Cited By (31)
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| CN104538566A (en) * | 2015-01-22 | 2015-04-22 | 深圳市华星光电技术有限公司 | Packaging method of OLED (Organic Light Emitting Diode) and OLED packaging structure |
| CN104576972A (en) * | 2014-12-02 | 2015-04-29 | 深圳市华星光电技术有限公司 | OLED (organic light-emitting diode) packaging method and OLED packaging structure |
| CN104674162A (en) * | 2015-01-29 | 2015-06-03 | 京东方科技集团股份有限公司 | Mask, encapsulation method of OLED (Organic Light Emitting Diode) device and OLED device |
| CN105206763A (en) * | 2015-10-21 | 2015-12-30 | 京东方科技集团股份有限公司 | Flexible displayer and production method thereof |
| CN105824457A (en) * | 2015-01-28 | 2016-08-03 | 三星显示有限公司 | Organic light emitting diode display |
| WO2016145810A1 (en) * | 2015-03-18 | 2016-09-22 | 京东方科技集团股份有限公司 | Oled substrate and preparation method therefor, oled panel, and display apparatus |
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| KR101107180B1 (en) * | 2009-11-10 | 2012-01-25 | 삼성모바일디스플레이주식회사 | Organic light emitting diode display and method for manufacturing the same |
-
2014
- 2014-05-29 CN CN201420282295.1U patent/CN203883009U/en not_active Expired - Lifetime
- 2014-10-11 WO PCT/CN2014/088381 patent/WO2015180366A1/en active Application Filing
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| CN104538566A (en) * | 2015-01-22 | 2015-04-22 | 深圳市华星光电技术有限公司 | Packaging method of OLED (Organic Light Emitting Diode) and OLED packaging structure |
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