CN107799573A - A kind of OLED display panel and display device - Google Patents
A kind of OLED display panel and display device Download PDFInfo
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- CN107799573A CN107799573A CN201711017876.7A CN201711017876A CN107799573A CN 107799573 A CN107799573 A CN 107799573A CN 201711017876 A CN201711017876 A CN 201711017876A CN 107799573 A CN107799573 A CN 107799573A
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- graphene
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- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
Abstract
The invention discloses a kind of OLED display panel and display device, including the first substrate and second substrate being oppositely arranged；Graphene anode, positioned at second substrate towards first substrate side, for receiving display drive signals；Organic luminous layer, positioned at the graphene anode towards first substrate side；Negative electrode, positioned at organic luminous layer towards first substrate side, for receiving display data signal.Relative to traditional tin indium oxide, the transmitance and electric conductivity of graphene are more preferable, it may have bigger adjustment space, graphene are applied to the electrode shown for OLED, can increase the luminous intensity that OLED is shown, reduce the power consumption that OLED is shown.
Description
Technical field
The present embodiments relate to Display Technique, more particularly to a kind of OLED display panel and display device.
Background technology
OLED display screen is not required to the advantages that backlight, contrast are high, visual angle is wide, available for flexible panel because it possesses,
It is considered as the emerging application technology of follow-on flat-panel screens.
OLED emitting device structures in current OLED display screen are sandwich structure, and luminescent layer both sides aoxidize for metal
Thing anode and metallic cathode, and tin indium oxide (ITO) film due to it with 4.5~5.3eV high work function, property it is stable and
The characteristics of printing opacity, the anode being used as in OLED.
In general, ito thin film can be prepared by radio-frequency sputtering, but the ito thin film prepared by this method is easily by work
Skill controls the factor such as bad and causes surface irregularity, and then produces sophisticated material or protrusion.In addition, high-temperature calcination and tying again
Brilliant process can also produce surface about 10~30nm convexity layer.The particle of these out-of-flatnesses may increase leakage current, electricity
Lotus is not carrying out recombination luminescence by luminescent layer, reduces luminous efficiency.Secondly, conventional commercialization ITO is in visible-range
Transmitance about 80%~90%, the Ω of surface resistance about 10~100, the two parameters can have contradictory relation, with the increasing of transmitance
Add, surface resistance can become big, larger surface resistance and easily cause unnecessary power consumption, and transmitance is low to reduce OLED display panel
Luminous intensity.
The content of the invention
The present invention provides a kind of OLED display panel and display device, to realize the display of high transmission rate low-power consumption.
The embodiment of the present invention proposes to use graphene to replace ITO as the conductive electrode used in OLED to pass through
Graphene electrodes superior transmitance and electric conductivity, realize high transmission rate and the low-power consumption of OLED display panel and device.
To use following technical scheme up to this purpose, the present invention：
In a first aspect, the embodiments of the invention provide a kind of OLED display panel, including：
The first substrate and second substrate being oppositely arranged；
Graphene anode, positioned at second substrate towards first substrate side, for receiving display drive signals；
Organic luminous layer, positioned at the graphene anode towards first substrate side；
Negative electrode, positioned at organic luminous layer towards first substrate side, for receiving display data signal.
Further, the graphene doped anode one-electron oxidation agent, for improving work function, and/or, for reducing
Surface resistance.
Further, the graphene anode is planar graphene film.
Further, the graphene anode is multiplexed with touch-control driving electrodes, for receiving touch-control drive signal.
Further, the negative electrode is graphene negative electrode.
Further, the graphene anode, and/or, graphene negative electrode by vapour deposition process or spraying process prepare and
Into.
Further, the first substrate and the second substrate are made of transparent material.
Further, the first substrate and the second substrate are flexible base board.
Second aspect, the embodiment of the present invention also provide a kind of OLED display, including aobvious described in above-mentioned first aspect
Show panel.
OLED display panel and display device provided in an embodiment of the present invention, by by traditional ito transparent electrode stone
Black alkene film replaces so that the film of negative electrode is more smooth, the charge recombination of luminescent layer is more efficient, the migration of its high carrier
The advantages of rate, high light transmittance and low areal resistance, also make it that OLED display performances are more preferable, power consumption is lower.
Brief description of the drawings
Fig. 1 is a kind of structural representation of display panel of the offer in the embodiment of the present invention one；
Fig. 2 is a kind of structural representation of transparent OLED display panel of the offer in the embodiment of the present invention two；
Fig. 3 is a kind of structural representation of flexible OLED display panel of the offer in the embodiment of the present invention three.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment one
Fig. 1 show the structural representation of the OLED display panel of the offer of the embodiment of the present invention one, and the present embodiment is applicable
In OLED is shown, the concrete structure of the OLED display panel includes：
The first substrate 11 and second substrate 12 being oppositely arranged；
Graphene anode 13, positioned at second substrate 12 towards the side of first substrate 11, for receiving display drive signals；
Organic luminous layer 14, positioned at the graphene anode 13 towards the side of first substrate 11；
Negative electrode, positioned at organic luminous layer towards first substrate side, for receiving display data signal.
It should be noted that in the present embodiment, to be used as court from second substrate 12 to the direction of organic luminous layer 14
On direction, opposite direction is then used as direction directed downwardly, and wherein either above or below is only the description to residing orientation, right
Concrete structure does not form restriction.
By the way that traditional metal oxide anode is replaced with graphene film, it is arranged on organic luminous layer 14,
When graphene anode 13 is passed through display drive signals, and negative electrode 15 is passed through display data signal, the hole in graphene anode 13
Moved to luminescent layer 14, the electric charge in negative electrode 15 also moves to organic luminous layer 14, and both will tie in organic luminous layer 14
Close, produce it is bright, according to organic luminous layer 14 be formulated it is different can produce red, green and blue three primary colors, basic color is formed, so as to realize
Display function.It should be noted that organic luminous layer 14 can use emission structure at top, bottom emitting mechanism can also be used,
This is not construed as limiting.If organic luminous layer 14 uses emission structure at top, first substrate 11 and negative electrode 15 need using transparent or
Person's trnaslucent materials is made, and second substrate 12 needs to be made of reflectorized material；If organic luminous layer uses bottom emitting
Structure, then first substrate 11 or negative electrode 15 need to be made of reflectorized material, second substrate 12 is needed using transparent or half
Transparent material is made.
In the fabrication process, the preparation of graphene film can use chemical vapor deposition CVD technology, be contained using methane etc.
Carbon compound prepares graphene, widely used substrate material by it as carbon source in the Pintsch process of transiting metal surface
Expect that, for copper, the graphene film thickness that this method is prepared is 0.34nm~0.8nm, prepare the graphene film of completion by turning
Process transfer is moved to second substrate 12.The preparation method of graphene film can also be spraying process, micromechanics stripping method, extension
Growth method and oxidation-reduction method etc..Organic luminous layer 14 and negative electrode 15 can then be covered with the second substrate 12 of graphene anode 13
It is upper to be prepared using thermal evaporation deposition, magnetron sputtering method etc..
The technical scheme of the present embodiment, using possessing the advantages that high transmittance, high carrier mobility and high conductivity
Grapheme material, substitute traditional metal oxide electrode, solve high transmittance existing for INVENTIONConventional metal-oxide electrode and
The problem of low areal resistance can not be taken into account, make OLED display panel electrode drive signal rapider, display light intensity increase, display effect
More preferably.
On the basis of above-mentioned technical proposal, graphene anode 13 can carry out chemical doping with improve carrier concentration,
Improve work function and reduce surface resistance, it is preferable that one-electron oxidation agent doping can be carried out.Common chemical doping includes miscellaneous
Matter atom enters doping and the chemical absorption of surface of graphene lattice, for example, after copper-based bottom sediments graphene film, utilizes
Solute doping technique carries out chemical doping with one-electron oxidation agent to described graphene film so that an electronics is from graphene
Film is transferred in each molecule of one-electron oxidation agent.One-electron oxidation agent can be organic one-electron oxidation agent, such as five
Antimony chloride, Nitrosonium ion salt etc. or other one-electron oxidation agent such as metallo-organic complexs etc..
In the present embodiment, graphene anode 13 can be planar graphene film, can also be in preparation process by covering
Diaphragm plate is prepared into the graphene film of certain pattern, is preferably shown to coordinate 14 layers of organic luminous layer to reach with cathode layer 15
Effect.Preferably, line mask need not be entered using planar graphene film, it is possible to reduce manufacturing cost.
Preferably, graphene anode 14 can also be multiplexed with touch-control driving electrodes, for receiving touch-control drive signal, due to
The advantages that surface resistance of graphene film is small, carrier concentration is high, the electric conductivity of Graphene electrodes is more preferable, OLED display panel
Touch control detection can be sensitiveer.
Embodiment two
Fig. 2 is a kind of structural representation for transparent OLED display panel that the embodiment of the present invention two provides, and the present embodiment exists
On the basis of above-described embodiment, graphene negative electrode 25 is preferably further increased, on luminescent layer 24, is shown for receiving
Data-signal, metallic cathode that will be traditional are equally replaced with graphene film.
OLED structure is mostly layer structure, and especially opaque metal electrode can produce reflection to emergent light, make
The emergent light of OLED display panel has certain directionality, influences display screen display view angle, and metallic cathode equally can be anti-in addition
Ambient light is penetrated, makes display panel reflective serious in the case where the ambient lights such as outdoor are relatively strong, it is normal to have impact on OLED display panel
Display.The technical scheme of the present embodiment, traditional metallic cathode is replaced by using transparent graphene film, solves gold
Belong to electric auroral reflection it is relatively strong caused by narrow viewing angle, it is reflective serious the problem of.
On the basis of above-described embodiment, first substrate 21 and second substrate 22 are preferably transparency carrier, such as can be
Glass substrate, it is clear that when OLED electrode uses graphene film, possess the characteristics of bidirectional luminescence, also, when the first base
When plate and second substrate are transparency carrier, transparent OLED display screen can be prepared, market retail shop can be widely used in
The places such as advertisement window, while reaching outstanding display effect, do not influence translucency.
Embodiment three
Fig. 3 is a kind of structural representation for flexible OLED display panel that the embodiment of the present invention three provides.The present embodiment can
By based on the various embodiments described above, there is provided a kind of preferred embodiment, limit first substrate 31 and second substrate 32 using soft
Property material is prepared, such as can be tinsel, PET (polyethylene terephthalate), PEN (poly- naphthalenedicarboxylic acid second
Diester), PDMS (dimethyl silicone polymer) and PI (polyimides) etc..
The application scenarios of Flexible Displays are very extensive, and flexible display technologies also urgently develop, traditional OLED display panel
In, metal and metal oxide pliability are simultaneously bad, are not useful in the display panel of flexibility, and the Young of grapheme material
Modulus is up to 1TPa, has splendid flexility.This gives the technical side of specific flexible OLED display panel
Case, while substrate is prepared using flexible substrates, metal and metal oxide electrode are replaced by graphene film, added
The pliability of electrode, realize the OLED display panel of flexibility.
It should be noted that it above are only presently preferred embodiments of the present invention and institute's application technology principle.People in the art
Member can be carried out various bright for a person skilled in the art it will be appreciated that the invention is not restricted to specific embodiment described here
Aobvious change, readjust and substitute without departing from protection scope of the present invention.Therefore, although by above example to this
Invention is described in further detail, but the present invention is not limited only to above example, is not departing from present inventive concept
In the case of, other more equivalent embodiments can also be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (9)
- A kind of 1. OLED display panel, it is characterised in that including：The first substrate and second substrate being oppositely arranged；Graphene anode, positioned at second substrate towards first substrate side, for receiving display drive signals；Organic luminous layer, positioned at the graphene anode towards first substrate side；Negative electrode, positioned at organic luminous layer towards first substrate side, for receiving display data signal.
- 2. OLED display panel according to claim 1, it is characterised in that the graphene doped anode one-electron oxidation Agent, for improving work function, and/or, for reducing surface resistance.
- 3. OLED display panel according to claim 1, it is characterised in that the graphene anode is that planar graphene is thin Film.
- 4. OLED display panel according to claim 3, it is characterised in that the graphene anode is multiplexed with touch-control driving Electrode, for receiving touch-control drive signal.
- 5. OLED display panel according to claim 1, it is characterised in that the negative electrode is graphene negative electrode.
- 6. OLED display panel according to claim 1 or 5, it is characterised in that the graphene anode, and/or, graphite Alkene negative electrode is prepared by vapour deposition process or spraying process.
- 7. OLED display panel according to claim 1, it is characterised in that the first substrate and the second substrate are equal It is made of transparent material.
- 8. OLED display panel according to claim 1, it is characterised in that the first substrate and the second substrate are equal For flexible base board.
- 9. a kind of OLED display, it is characterised in that include the OLED display panel of claim 1 to 8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711017876.7A CN107799573A (en) | 2017-10-26 | 2017-10-26 | A kind of OLED display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711017876.7A CN107799573A (en) | 2017-10-26 | 2017-10-26 | A kind of OLED display panel and display device |
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| Publication Number | Publication Date |
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| CN107799573A true CN107799573A (en) | 2018-03-13 |
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| CN201711017876.7A Withdrawn CN107799573A (en) | 2017-10-26 | 2017-10-26 | A kind of OLED display panel and display device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000817A (en) * | 2012-11-29 | 2013-03-27 | 无锡格菲电子薄膜科技有限公司 | Flexible organic light emitting diode |
| CN103035666A (en) * | 2012-12-28 | 2013-04-10 | 江苏宇迪光学股份有限公司 | Panel of large-sized flexible flat-panel display and manufacture method thereof |
| CN103682152A (en) * | 2012-09-25 | 2014-03-26 | 国际商业机器公司 | Transparent conductive electrode and forming method therefor, organic light emitting diode (OLED) device and forming method therefor |
| CN103838448A (en) * | 2014-02-18 | 2014-06-04 | 重庆绿色智能技术研究院 | Integration OLED touch screen displayer based on graphene |
| CN104103343A (en) * | 2013-04-01 | 2014-10-15 | 株式会社东芝 | Transparent conductive film and electric device |
-
2017
- 2017-10-26 CN CN201711017876.7A patent/CN107799573A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682152A (en) * | 2012-09-25 | 2014-03-26 | 国际商业机器公司 | Transparent conductive electrode and forming method therefor, organic light emitting diode (OLED) device and forming method therefor |
| CN103000817A (en) * | 2012-11-29 | 2013-03-27 | 无锡格菲电子薄膜科技有限公司 | Flexible organic light emitting diode |
| CN103035666A (en) * | 2012-12-28 | 2013-04-10 | 江苏宇迪光学股份有限公司 | Panel of large-sized flexible flat-panel display and manufacture method thereof |
| CN104103343A (en) * | 2013-04-01 | 2014-10-15 | 株式会社东芝 | Transparent conductive film and electric device |
| CN103838448A (en) * | 2014-02-18 | 2014-06-04 | 重庆绿色智能技术研究院 | Integration OLED touch screen displayer based on graphene |
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Application publication date: 20180313 |