CN203218338U - Flexible base board and organic light-emitting diode (OLED) display device - Google Patents
Flexible base board and organic light-emitting diode (OLED) display device Download PDFInfo
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- CN203218338U CN203218338U CN 201320253956 CN201320253956U CN203218338U CN 203218338 U CN203218338 U CN 203218338U CN 201320253956 CN201320253956 CN 201320253956 CN 201320253956 U CN201320253956 U CN 201320253956U CN 203218338 U CN203218338 U CN 203218338U
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- flexible base
- board
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Abstract
The utility model relates to the display technical field, in particular to a flexible base board and an organic light-emitting diode (OLED) display device comprising the flexible base board. The flexible base board includes a flexible substrate; the flexible substrate is provided with a reticular recessed layer; and a reticular current collecting layer is embedded in the reticular recessed layer and is use for improving the conductivity of the flexible base board. According to the flexible base board of the utility model, the design of the reticular recessed layer is adopted, and the reticular current collecting layer is embedded inside the flexible base board, and therefore, the conductivity of the flexible base board can be improved effectively. When the flexible base board is applied to the OLED display device, the problem of low conductivity of an anode in the OLED display device can be solved.
Description
Technical field
The utility model relates to the Display Technique field, the OLED display unit that relates in particular to flexible base, board and comprise this flexible base, board.
Background technology
Up to the present, the display unit of practical application mainly contains cathode ray tube (CRT), LCD (LCD), vacuum fluorescence device (VFD), plasma display (PDP), organic electroluminescence device (OLED), Field Emission Display (FED) and electroluminescent display (ELD) etc.
The English full name of OLED(: OrganicLight-EmittingDiode) display unit comprises anode, organic luminous layer, negative electrode; The OLED display unit is compared with the LCD display unit, have thin, light, wide visual angle, active illuminating, glow color continuously adjustable, cost is low, response speed is fast, energy consumption is little, driving voltage is low, operating temperature range is wide, production technology is simple, luminous efficiency is high and can flexible demonstration etc. advantage.OLED has obtained the very big concern of industrial circle and scientific circles just because of having the incomparable advantage of other displays and fine application prospect.
When making the OLED display, because the general metal that adopts a low work function of negative electrode, therefore, anode needs the material deallocation of a high work function to close.Usually the anode material that adopts is the polymeric material of conduction at present, but the electric conductivity of polymeric material also has a certain distance than metal and ITO material at present.
Therefore, the utility model proposes a kind of new flexible base, board and OLED display unit at the problems referred to above.
Summary of the invention
The purpose of this utility model provides a kind of flexible base, board and OLED display unit, and this flexible base, board embeds the mesh current tether layer in it by netted recessed layer, to realize improving the purpose of flexible base, board conductivity.
The purpose of this utility model is achieved through the following technical solutions: a kind of flexible base, board, comprise flexible substrate, described flexible substrate is provided with netted recessed layer, is embedded with the mesh current tether layer in this netted recessed layer, and described mesh current tether layer is used for improving the conductivity of flexible base, board.
Further, the upper surface flush of the end face of described mesh current tether layer and described flexible base, board.
Further, described flexible base, board is the OLED flexible base, board.
Further, the netted setting of the rectangular pass of described netted recessed layer.
Further, described mesh current tether layer adopts metal material to make.
Further, described flexible base, board adopts photopolymerizable material to make.
Further, described mesh current tether layer thickness is between 5-30nm.
A kind of OLED display unit comprises anode and as flexible base, board as described in arbitrary in above-mentioned; Described anode is arranged on the described flexible base, board.
Further, described anode material is one or both mixing in poly-enedioxy thiophene and poly-(3,4-Ethylenedioxy Thiophene)-poly-(styrene sulfonic acid).
Further, described display unit also comprises organic luminous layer and negative electrode.
Further, described organic luminous layer is arranged on the described anode, and described negative electrode is arranged on the described organic luminous layer.
The utility model compared with prior art has following advantage:
1, the utility model adopts the design of netted recessed layer, can be used for embedding the mesh current tether layer, so that mesh current tether layer integral body is arranged in the netted recessed layer, improved the conductivity of flexible base, board effectively, this substrate is applied in the OLED display unit, can solves the not high problem of conductivity of anode in the OLED display unit.
2, the upper surface flush of the end face of mesh current layer and flexible base, board, when improving flexible base, board conductivity, also improved planarization, this flexible base, board is applied in the OLED display unit, can improve the evenness of anode surface, and anode surface is more smooth, and its surperficial charge carrier injectability is just more strong; This shows, can improve the electric conductivity of anode.
3, the utility model adopts the mesh current tether layer is directly fixed in step in the flexible substrate base material by ultraviolet ray; Utilize the fluid behaviour of flexible substrate base material when uncured, can reach more fully being combined with the mesh current tether layer of nature, make matching degree between the two higher; With this flexible base, board of producing, its end surfaces that is provided with netted recessed layer is more smooth, thereby makes coating anode surface evenness thereon higher.
4, anode base material described in the utility model adopts the mode of spin coating to be coated with; Anode base material is fully contacted and sticking and fixing with the mesh current tether layer of described flexible base, board; Effectively guaranteed charge carrier transitivity between the two.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation (front view) of flexible base, board in the utility model;
Fig. 2 is the structural representation (vertical view) of flexible base, board in the utility model;
Fig. 3 is flexible base, board step of manufacturing schematic diagram (main cutaway view) in the utility model;
Fig. 4 is flexible base, board step of manufacturing schematic diagram (main cutaway view) in the utility model;
Fig. 5 is flexible base, board step of manufacturing schematic diagram (main cutaway view) in the utility model;
Fig. 6 is flexible base, board step of manufacturing schematic diagram (main cutaway view) in the utility model;
Fig. 7 is the structural representation (main cutaway view) of OLED display unit in the utility model.
Embodiment
Referring to Fig. 1, shown in Figure 2, flexible base, board of the present utility model comprises flexible substrate 1, and described flexible substrate is provided with netted recessed layer, be embedded with mesh current tether layer 2 in this netted recessed layer, described mesh current tether layer is used for improving the conductivity of flexible base, board.The tether layer of mesh current described in the present embodiment is the stratum reticulare of being made by the metal material that silver, copper etc. conduct electricity very well that is the film shape; Preferred material is silver.Flexible base, board described in the present embodiment is the OLED flexible base, board.
The utility model adopts the design of netted recessed layer, can be used for embedding the mesh current tether layer, so that mesh current tether layer integral body is arranged in the netted recessed layer, improved the conductivity of flexible base, board effectively, this substrate is applied to can improve the conductivity of anode in the OLED display unit in the OLED display unit.
The end face of the tether layer of mesh current described in the present embodiment and the upper surface flush of described flexible base, board; So that the mesh current tether layer fully contacts with anode disposed thereon, thereby realize fully improving by the mesh current tether layer purpose of the conductivity of anode.Netted recessed layer described in the present embodiment comprises that many are the staggered conduit that arranges.
Netted recessed layer described in the present embodiment can be the netted setting of arbitrary shape, can be the netted of circle for mesh for example; The corresponding mesh current tether layer that is embedded within it also is this shape.Netted recessed layer described in the present embodiment also can the netted setting of rectangular pass; The corresponding also netted setting of rectangular pass of mesh current tether layer that is embedded within it, the netted network structure that refers to that its mesh shape is rectangular of rectangular opening.Netted recessed layer described in the present embodiment also can be the netted setting of annulus pass; The corresponding mesh current tether layer that is embedded within it also is the netted setting of annulus pass.Netted recessed layer described in the present embodiment also can be the netted setting of regular polygon pass, and netted its mesh shape that refers to of regular polygon pass is the network structure of regular polygon; The corresponding mesh current tether layer that is embedded within it also is the netted setting of regular polygon pass.Referring to shown in Figure 2, for the consideration of save design and manufacturing cost, present embodiment adopts the closed box groove network structure.
Flexible base, board described in the present embodiment adopts photopolymerizable material to make.The photopolymerizable material that flexible base, board in the utility model adopts is materials such as phenylethylene, acrylic compounds, esters of acrylic acid, epoxy resin, unsaturated polyester (UP) class, amide-type or vinyl acetate class; Above-mentioned each material includes monomer, prepolymer and light trigger; The polymeric type of above-mentioned material can be free radical type, anionic or cationic.
The tether layer of mesh current described in the present embodiment is the stratum reticulare of the film shape that is translucent made of silver metal, and described mesh current tether layer thickness is preferably 10nm-20nm between 5-30nm; Be the end face that guarantees described mesh current tether layer and the upper surface flush of described flexible base, board, therefore the thickness of described netted recessed layer is also chosen between 5-30nm accordingly with the thickness of mesh current tether layer.Adopt the thickness of 10nm-20nm, both can guarantee the conductivity of electric current tether layer, can guarantee simultaneously the light transmittance of electric current tether layer again, be unlikely to cause light transmittance low excessively owing to thickness is blocked up, make device at this flexible base, board of following adopted, for example influence the transmitance of entire device during the OLED device.
The manufacture method of the flexible base, board that the utility model provides comprises the steps:
Referring to shown in Figure 3, in substrate for film deposition 3 electric current be set and compile rete 4; Substrate for film deposition described in the present embodiment is the planar substrates that the silicon materials that are provided with silicon dioxide insulating layer that clean up are made, and can certainly select other materials to make planar substrates, for example glass material, polyvinyl chloride etc. as the case may be; Electric current described in the present embodiment compiles rete and adopts process deposits such as evaporation on substrate for film deposition, and it is the metallic film of being made by the metal material that silver, copper etc. conduct electricity very well that this electric current compiles rete; Preferred material is silver.
Referring to shown in Figure 4, pass through composition technology according to the designing requirement of mesh current tether layer, (this composition technology generally comprises steps such as photoresist coating, exposure, development, etching and photoresist removal) compiled rete with electric current and is made into the mesh current tether layer; When making the mesh current tether layer, as adopting the mode of evaporation, also can directly in evaporate process, adopt mask plate that the subregion of substrate is blocked, thereby directly form the mesh current tether layer in the substrate deposition.Adopt this step can save steps such as exposure, development, etching, simplified the processing step of making the mesh current tether layer, reduce cost.
Referring to shown in Figure 5, in the mode coating flexible substrate 5 of the substrate for film deposition one side that is provided with the mesh current tether layer by spin coating; Be formed with the substrate of flexible substrate base material; The substrate that the flexible substrate base material is arranged described in the present embodiment comprises substrate for film deposition, places the mesh current tether layer on the described substrate for film deposition and is coated on the outer flexible substrate base material of this mesh current tether layer; At this moment, described mesh current tether layer is whole to embed in the flexible substrate base material lower surface corresponding with the upper surface of described substrate for film deposition, and forms the netted recessed layer that adapts with described mesh current tether layer with this lower surface at this flexible substrate base material; Flexible substrate base material described in the present embodiment is photopolymerizable material; This photopolymerizable material is materials such as phenylethylene, acrylic compounds, esters of acrylic acid, epoxy resin, unsaturated polyester (UP) class, amide-type or vinyl acetate class; Above-mentioned each material includes monomer, prepolymer and light trigger; The polymeric type of above-mentioned material can be free radical type, anionic or cationic.The thickness of the base material of flexible substrate described in the present embodiment is at the 0.3-0.8mm(millimeter) between, be preferably 0.5mm-0.7mm; The spin speed of described flexible substrate base material is the 800-2000rpm(per minute number of being turn-taked), preferred 1000rpm, the spin coating time is 10-30s(second), preferred 20s; Adopt the technology of spin coating in substrate for film deposition the flexible substrate base material to be set, can improve the uniformity of this flexible substrate base material, make its coating to described mesh current tether layer more abundant, make the mesh current tether layer tightr with being connected of flexible substrate base material simultaneously, thereby the demoulding technology after guaranteeing is carried out smoothly.
By ultraviolet curing equipment (genus existing equipment) substrate that the flexible substrate base material is arranged is carried out ultraviolet curing, flexible substrate base material and mesh current tether layer are solidified into one; Present embodiment middle-ultraviolet lamp curing time is 2-5min(minute), preferred 3min.
The substrate that the flexible substrate base material is arranged after solidifying forms the metastable flexible base, board of being made up of the flexible substrate base material that is provided with netted recessed layer and mesh current tether layer of structure in its substrate for film deposition.
Referring to shown in Figure 6, flexible base, board is carried out demoulding technology; Remove substrate for film deposition, form flexible base, board.Described demoulding refers to flexible base, board is peeled off the technology of substrate for film deposition; Make complete flexible base, board.Because the adherence between mesh current tether layer and the flexible substrate base material is greater than adherence between mesh current tether layer and the substrate for film deposition; Therefore, in the stripping process of flexible base, board, situation about being broken away from by substrate for film deposition adhesion and flexible substrate base material because of the mesh current tether layer can not appear.
The utility model adopts the mesh current tether layer is directly fixed in step in the flexible substrate base material by ultraviolet ray; Utilize the fluid behaviour of flexible substrate base material when uncured, can reach more fully being combined with the mesh current tether layer of nature, make matching degree between the two higher; With this flexible base, board of producing, its end surfaces that is provided with the mesh current tether layer is more smooth, thereby makes coating anode surface evenness thereon higher.
Referring to shown in Figure 7, the utility model also provides a kind of OLED display unit, comprises anode, also comprise as above-mentioned arbitrary as described in flexible base, board 101; Described negative electrode is arranged on and is provided with anode 102, organic luminous layer 103 and negative electrode 104 on the described organic luminous layer from the bottom to top successively on described flexible base, board.Anode is arranged on the described flexible base, board; Organic luminous layer is arranged on the described anode, and described negative electrode is arranged on the described organic luminous layer; Because flexible base, board is provided with the mesh current tether layer, therefore can solve the not high problem of anode conducting, and adopt embedded structure, and the end face of mesh current tether layer and the upper surface flush of flexible base, board, can improve the planarization of flexible base, board, and then the planarization of anode of preparation on this flexible base, board can be improved also, and the planarization of anode surface directly influences charge carrier and injects effect, its planarization improves, and the injection effect of charge carrier also is improved accordingly.
Anode material described in the present embodiment is one or both mixing in poly-enedioxy thiophene and poly-(3,4-Ethylenedioxy Thiophene)-poly-(styrene sulfonic acid).
OLED display unit of the present utility model adopts the design of above-mentioned flexible base, board, the corresponding function that not only has this flexible base, board, and because flexible base, board is embedded in the mesh current tether layer in the netted recessed layer, therefore, can also reduce the thickness of OLED display unit; Make it more attractive in appearance, frivolous.
The utility model also provide a kind of as above-mentioned described in the manufacture method of OLED display unit, comprise the steps:
The one side that is provided with the mesh current tether layer at described flexible base, board is coated with anode base material; Anode base material adopts the mode of spin coating to be coated with in the present embodiment; Adopt this kind form that anode base material is fully contacted with the mesh current tether layer of described flexible base, board and sticking and fixing; Effectively guaranteed charge carrier transitivity between the two.The thickness of anode is 20-60nm, preferred 40nm.
Cathode substrate described in the present embodiment adopts the metallic film or the conducting polymer composite that conduct electricity very well to make; Anode base material specifically adopts by PEDOT(3 in the present embodiment, the polymer of 4-enedioxy thiophene monomer) the water miscible polyelectrolyte polystyrolsulfon acid of doping PSS() the PEDOT/PSS conducting polymer composite made makes.
The flexible base, board that is provided with anode is carried out drying by vacuum drying oven to be handled; The baking temperature of vacuum drying oven described in the present embodiment is 60-100 ℃, preferred 80 ℃, dry duration is 7-10 hour, and preferred 8 hours, choosing of the baking temperature described in the present embodiment and dry duration will require to set according to the manufacturing of the flexible base, board of different size.
Drying is coated with organic luminous layer at described anode after handling; Specifically, carry out the evaporation of organic luminous layer in being transferred to the flexible base, board that is provided with anode between vacuumizing; Polymeric material layer and TPBI(1 that organic luminous layer described in the present embodiment is made by chlorobenzene solution dissolving and doping heavy metal iridium by PVK molecule (Polyvinyl carbazole), PBD molecule (phenylbiphenylyl is diazole oh), 3,5-three (1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene) layer is made; Wherein the weight fraction of PVK molecule, PBD molecule and iridium is than being 60-80:20-40:1; The polymeric material layer thickness of organic luminous layer described in the present embodiment is preferably 70nm between 60-80nm, the TPBI layer thickness is between the 20-50nm, is preferably 30nm.
Under vacuum state, evaporation cathode substrate on described organic luminous layer; Vacuum state described in the present embodiment refers to less than 3 * 10
-4The atmospheric vacuum environment of Pa; And by evaporation process the form of cathode substrate with deposition is arranged on the organic luminous layer, and make negative electrode with this.So far, the OLED display unit completes.
The above; it only is embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of described claim.
Claims (11)
1. a flexible base, board comprises flexible substrate, it is characterized in that: described flexible substrate is provided with netted recessed layer, is embedded with the mesh current tether layer in this netted recessed layer, and described mesh current tether layer is used for improving the conductivity of flexible base, board.
2. flexible base, board as claimed in claim 1 is characterized in that: the end face of described mesh current tether layer and the upper surface flush of described flexible base, board.
3. flexible base, board as claimed in claim 2, it is characterized in that: described flexible base, board is the OLED flexible base, board.
4. flexible base, board as claimed in claim 3 is characterized in that: the netted setting of the rectangular pass of described netted recessed layer.
5. flexible base, board as claimed in claim 4 is characterized in that: described mesh current tether layer adopts metal material to make.
6. flexible base, board as claimed in claim 5 is characterized in that: described flexible base, board adopts photopolymerizable material to make.
7. flexible base, board as claimed in claim 6, it is characterized in that: described mesh current tether layer thickness is between 5-30nm.
8. an OLED display unit comprises anode, it is characterized in that: also comprise as flexible base, board as described in arbitrary among the claim 1-7; Described anode is arranged on the described flexible base, board.
9. OLED display unit as claimed in claim 8 is characterized in that, described anode material is one or both mixing in poly-enedioxy thiophene and poly-(3,4-Ethylenedioxy Thiophene)-poly-(styrene sulfonic acid).
10. OLED display unit as claimed in claim 9 is characterized in that, described display unit also comprises organic luminous layer and negative electrode.
11. OLED display unit as claimed in claim 10 is characterized in that, described organic luminous layer is arranged on the described anode, and described negative electrode is arranged on the described organic luminous layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320253956 CN203218338U (en) | 2013-05-10 | 2013-05-10 | Flexible base board and organic light-emitting diode (OLED) display device |
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| CN 201320253956 CN203218338U (en) | 2013-05-10 | 2013-05-10 | Flexible base board and organic light-emitting diode (OLED) display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236504A (en) * | 2013-05-10 | 2013-08-07 | 合肥京东方光电科技有限公司 | Flexible base plate, manufacturing method, and OLED (Organic Light Emitting Diode) display device |
| CN105810844A (en) * | 2016-03-23 | 2016-07-27 | 武汉华星光电技术有限公司 | OLED device and manufacturing method therefor, and flexible display unit |
-
2013
- 2013-05-10 CN CN 201320253956 patent/CN203218338U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236504A (en) * | 2013-05-10 | 2013-08-07 | 合肥京东方光电科技有限公司 | Flexible base plate, manufacturing method, and OLED (Organic Light Emitting Diode) display device |
| WO2014180077A1 (en) * | 2013-05-10 | 2014-11-13 | 合肥京东方光电科技有限公司 | Flexible substrate, manufacturing method for same, and oled display apparatus |
| US9281493B2 (en) | 2013-05-10 | 2016-03-08 | Hefei Boe Optoelectronics Technology Co., Ltd. | Flexible substrate and manufacturing method thereof, OLED display device |
| CN105810844A (en) * | 2016-03-23 | 2016-07-27 | 武汉华星光电技术有限公司 | OLED device and manufacturing method therefor, and flexible display unit |
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Granted publication date: 20130925 |