CN107331687A - OLED display with double faces and preparation method thereof - Google Patents

OLED display with double faces and preparation method thereof Download PDF

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Publication number
CN107331687A
CN107331687A CN201710563166.8A CN201710563166A CN107331687A CN 107331687 A CN107331687 A CN 107331687A CN 201710563166 A CN201710563166 A CN 201710563166A CN 107331687 A CN107331687 A CN 107331687A
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China
Prior art keywords
oled
layer
substrate
emitting substrates
reflective cathode
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CN201710563166.8A
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Chinese (zh)
Inventor
徐超
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武汉华星光电半导体显示技术有限公司
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Priority to CN201710563166.8A priority Critical patent/CN107331687A/en
Publication of CN107331687A publication Critical patent/CN107331687A/en

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/28Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part
    • H01L27/32Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes [OLED]
    • H01L27/3241Matrix-type displays
    • H01L27/3244Active matrix displays
    • H01L27/3267Dual display, i.e. having two independent displays
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/50Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED]
    • H01L51/52Details of devices
    • H01L51/5203Electrodes
    • H01L51/5221Cathodes, i.e. with low work-function material
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/50Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED]
    • H01L51/56Processes or apparatus specially adapted for the manufacture or treatment of such devices or of parts thereof

Abstract

The present invention provides a kind of OLED display with double faces and preparation method thereof.The OLED display with double faces of the present invention, including the first OLED light-emitting substrates being oppositely arranged and the 2nd OLED light-emitting substrates;Wherein, the first OLED light-emitting substrates and respective first reflective cathode layer of the 2nd OLED light-emitting substrates and the second reflective cathode layer are bonded together by conductive ink and collectively form total cathode layer, and then the first OLED light-emitting substrates and the 2nd OLED light-emitting substrates are bonded together face to face by conductive ink, not only preparation method is simple, it is with low cost, can effectively solve the problem of current display with double faces is thick and heavy, and before and after OLED display with double faces can be realized two sides while showing different pictures.

Description

OLED display with double faces and preparation method thereof

Technical field

The present invention relates to display technology field, more particularly to a kind of OLED display with double faces and preparation method thereof.

Background technology

Organic Light Emitting Diode (organic light emitting diode, OLED) display has self-luminous, drive Dynamic voltage is low, luminous efficiency is high, the response time is short, definition and contrast height, wide viewing angle, temperature in use scope are wide, can be achieved Many advantages, such as Flexible Displays are with large area total colouring, it is the display device for most having development potentiality to be known as by industry.OLED Display belongs to emissive type display device, and OLED luminescent devices thereon generally include to be used separately as anode (Anode) and the moon The pixel electrode and public electrode of pole (cathode) and the organic function layer being located between pixel electrode and public electrode, when Have electric current by when, these organic function layers will light.

With the development of Display Technique, consumer possesses that reaction speed is fast, high resolution, image quality except requiring display device Outside fine and smooth the characteristics of, the breakthrough in function and display pattern is also pursued.Therefore, OLED double-side display devices arise at the historic moment, OLED Double-side display device can also extend image spacing, be switched fast in addition to the various characteristics for possessing common OLED display With handling multiple display pictures, there is huge application space in advertising and portable type electronic product.

The design of OLED display with double faces general at present, generally uses and does thin by Anode and cathode and form transparent The mode of electrode so that OLED luminescent devices can simultaneously be shown in the positive and negative of panel (panel).However, in this type of design, The drawbacks of having one substantially, is exactly that mirror is presented with the image of panel back displays in the image of panel fronts display, i.e., Observer is anti-in the image that the pattern left and right sides is seen, this brings very big inconvenience to observer, particularly works as When the image of map style is shown in panel, this unfavorable property, especially significantly.

It is and the design of another OLED display with double faces conventional at present is, the oled panel of two pieces of top emittings is back-to-back Fit together, signal is inculcated respectively by two integrated circuits (IC), to cause the image frame that tow sides are shown in sight The problem of being not in directional distortion when examining, however it is this be designed with one substantially the drawbacks of, need two it is independent Oled panel, structure is more thick and heavy, and technique is relative complex, and cost of manufacture is higher, does not meet consumer desired frivolous with high property Valency than requirement.

The content of the invention

It is an object of the invention to provide a kind of OLED display with double faces, not only preparation method is simple, with low cost, can have Effect solves the problem of current display with double faces is thick and heavy, and before and after OLED display with double faces can be realized two sides while showing difference Picture.

The present invention also aims to provide a kind of preparation method of OLED display with double faces, not only preparation method is simple, It is with low cost, the problem of current display with double faces is thick and heavy can be effectively solved, and can realize two before and after OLED display with double faces Face shows different pictures simultaneously.

To achieve the above object, the invention provides a kind of OLED display with double faces, including the first OLED being oppositely arranged Light-emitting substrate and the 2nd OLED light-emitting substrates;

Wherein, the first OLED light-emitting substrates include first substrate and sent out in the first substrate close to the 2nd OLED The first pixel electrode layer, the first OLED organic function layers and the first reflective cathode layer that the side of photopolymer substrate is set gradually;

The 2nd OLED light-emitting substrates include second substrate and in the second substrate close to the luminous bases of the first OLED The second pixel electrode layer, the 2nd OLED organic function layers and the second reflective cathode layer that the side of plate is set gradually;

First reflective cathode layer and the second reflective cathode layer are bonded together by conductive ink and collectively formed total Cathode layer, and then the first OLED light-emitting substrates and the 2nd OLED light-emitting substrates are bonded in one face to face by conductive ink Rise.

The conductive ink is conductive, and the conductive ink includes solvent and conductive material, and the conductive material is Material with high conductivity, the solvent is alcohol organic solvent or alkanes organic solvent.

The material of first reflective cathode layer and the material of the second reflective cathode layer are metal material;

The material of first reflective cathode layer and the material of the second reflective cathode layer are same metal material or not of the same race Metal material.

The material of first pixel electrode layer and the material of the second pixel electrode layer are tin indium oxide.

The first substrate and second substrate are tft array substrate, the first substrate include the first underlay substrate and The first TFT layer on first underlay substrate, the second substrate includes the second underlay substrate and located at described second The second TFT layer on underlay substrate.

Present invention also offers a kind of preparation method of OLED display with double faces, comprise the following steps:

Step S1, offer first substrate and second substrate, first is formed on the first substrate and second substrate respectively Pixel electrode layer and the second pixel electrode layer, first is formed on first pixel electrode layer and the second pixel electrode layer respectively OLED organic function layers and the 2nd OLED organic function layers, in the first OLED organic function layers and the 2nd OLED organic functionses The first reflective cathode layer and the second reflective cathode layer are formed on layer respectively, so as to obtain including first substrate, the first pixel electrode First OLED light-emitting substrates of layer, the first OLED organic function layers and the first reflective cathode layer, obtain including second substrate, second 2nd OLED light-emitting substrates of pixel electrode layer, the 2nd OLED organic function layers and the second reflective cathode layer;

Step S2, offer conductive ink, using the conductive ink in first reflective cathode layer and the second reflective cathode The first conductive ink layer and the second conductive ink layer are made on layer respectively;

Step S3, by the first OLED light-emitting substrates and the 2nd OLED light-emitting substrates to group pressing so that the first reflective cathode Layer and the second reflective cathode layer are bonded together by the first conductive ink layer and the second conductive ink layer and collectively form total the moon Pole layer, and then the first OLED light-emitting substrates and the 2nd OLED light-emitting substrates are bonded together, obtain OLED display with double faces.

The conductive ink is conductive, and the conductive ink includes solvent and conductive material, and the conductive material is Material with high conductivity, the solvent is alcohol organic solvent or alkanes organic solvent;

In the step S2, the method for making the first conductive ink layer is the method for spin coating, spraying or inkjet printing, is made The method of second conductive ink layer is the method for spin coating, spraying or inkjet printing.

The material of first reflective cathode layer and the material of the second reflective cathode layer are metal material;

The material of first reflective cathode layer and the material of the second reflective cathode layer are same metal material or not of the same race Metal material.

The material of first pixel electrode layer and the material of the second pixel electrode layer are tin indium oxide.

The first substrate and second substrate are tft array substrate, the first substrate include the first underlay substrate and The first TFT layer on first underlay substrate, the second substrate includes the second underlay substrate and located at described second The second TFT layer on underlay substrate.

Beneficial effects of the present invention:A kind of OLED display with double faces that the present invention is provided, including first be oppositely arranged OLED light-emitting substrates and the 2nd OLED light-emitting substrates;Wherein, the first OLED light-emitting substrates and the 2nd OLED light-emitting substrates are each From the first reflective cathode layer and the second reflective cathode layer be bonded together by conductive ink and collectively form total cathode layer, enter And the first OLED light-emitting substrates and the 2nd OLED light-emitting substrates are bonded together face to face by conductive ink, not only make Make method simple, it is with low cost, the problem of current display with double faces is thick and heavy can be effectively solved, and can realize that OLED is two-sided aobvious Two sides is while show different pictures before and after showing device.A kind of preparation method for OLED display with double faces that the present invention is provided, makes respectively After obtaining the first OLED light-emitting substrates and the 2nd OLED light-emitting substrates, in the first reflective cathode of the first OLED light-emitting substrates The first conductive ink layer and the second conductive ink layer are made respectively on second reflective cathode layer of layer and the 2nd OLED light-emitting substrates, Then by the first OLED light-emitting substrates and the 2nd OLED light-emitting substrates to a group pressing so that the first OLED light-emitting substrates and second OLED light-emitting substrates are bonded together, and just can obtain OLED display with double faces of good performance, and not only preparation method is simple, cost It is cheap, it can effectively solve the problem of current display with double faces is thick and heavy, and also two sides is same before and after can realizing OLED display with double faces When show different pictures.

In order to be able to be further understood that the feature and technology contents of the present invention, refer to below in connection with the detailed of the present invention Illustrate and accompanying drawing, however accompanying drawing only provide with reference to and explanation use, not for being any limitation as to the present invention.

Brief description of the drawings

Below in conjunction with the accompanying drawings, it is described in detail by the embodiment to the present invention, technical scheme will be made And other beneficial effects are apparent.

In accompanying drawing,

Fig. 1 is the structural representation of the OLED display with double faces of the present invention;

Fig. 2 is the schematic flow sheet of the preparation method of the OLED display with double faces of the present invention;

Fig. 3 is the step S1 of the preparation method of the OLED display with double faces of present invention schematic diagram;

Fig. 4 is the step S2 of the preparation method of the OLED display with double faces of present invention schematic diagram;

Fig. 5 is the step S3 of the preparation method of the OLED display with double faces of present invention schematic diagram.

Embodiment

Further to illustrate the technological means and its effect of the invention taken, below in conjunction with being preferable to carry out for the present invention Example and its accompanying drawing are described in detail.

Referring to Fig. 1, present invention firstly provides a kind of OLED display with double faces, including the first OLED being oppositely arranged luminous The OLED light-emitting substrates 200 of substrate 100 and the 2nd;

Wherein, the first OLED light-emitting substrates 100 include first substrate 110 and close in the first substrate 110 The first pixel electrode layer 121 that the side of 2nd OLED light-emitting substrates 200 is set gradually, the first OLED organic function layers 122 and First reflective cathode layer 123;So as to which first pixel electrode layer 121, the first OLED organic function layers 122 and the first reflection are cloudy Pole layer 123 together constitutes the first OLED luminescent layers 120, and first pixel electrode layer 121 is used as the first OLED luminescent layers 120 Anode layer;

The 2nd OLED light-emitting substrates 200 include second substrate 210 and in the second substrate 210 close to first The second pixel electrode layer 221 that the side of OLED light-emitting substrates 100 is set gradually, the 2nd OLED organic function layers 222 and second Reflective cathode layer 223;So as to second pixel electrode layer 221, the 2nd OLED organic function layers 222 and the second reflective cathode layer 223 together constitute the 2nd OLED luminescent layers 220, second pixel electrode layer 221 as the 2nd OLED luminescent layers 220 anode Layer;

The reflective cathode layer 223 of first reflective cathode layer 123 and second is bonded together and common by conductive ink Total cathode layer 333 is constituted, and then the first OLED light-emitting substrates 100 and the 2nd OLED light-emitting substrates 200 pass through conductive ink It is bonded together face to face.

Specifically, the conductive ink is conductive, and the conductive ink includes solvent and conductive material, the conduction Material is the material with high conductivity, such as the solvent preferable organic solvent, alcohol organic solvent and alkanes organic solvent.

Specifically, the reflective cathode layer 223 of the first reflective cathode layer 123 and second uses the metal material of high reflectance Material, such as aluminium, silver.

Further, the material of the material of first reflective cathode layer 123 and the second reflective cathode layer 223 is gold of the same race Belong to material or metal material not of the same race.

Specifically, the material of the material of first pixel electrode layer 121 and the second pixel electrode layer 221 is transparent leads Electric material, more preferably tin indium oxide (ITO).

Specifically, the first substrate 110 and second substrate 210 are tft array substrate, and the first substrate 110 is wrapped The first underlay substrate 111 and the first TFT layer 112 on first underlay substrate 111 are included, the second substrate 210 is wrapped The second underlay substrate 211 and the second TFT layer 212 on second underlay substrate 211 are included, wherein first TFT layer 112nd, the second TFT layer 212 is respectively used to be driven the first OLED luminescent layers 120 and the 2nd OLED luminescent layers 220.

Specifically, OLED display with double faces of the invention is when being shown, the first OLED light-emitting substrates 100 and Two OLED light-emitting substrates 200 can send out the light of same color, can also send out the light of different colours.

Specifically, OLED display with double faces of the invention is when being shown, the first OLED light-emitting substrates 100 and Two OLED light-emitting substrates 200 share total cathode layer 333, by the respective pixel electrode of first pixel electrode layer 121 and second Layer 221 carries out identical or different driving, that is, inputs identical or different signal, just can realize while showing same frame or not With the technique effect of picture.

The OLED display with double faces of the present invention, its first OLED light-emitting substrate 100 and the 2nd OLED light-emitting substrates 200 are respective The first reflective cathode layer 123 and the second reflective cathode layer 223 be bonded together by conductive ink and collectively form total negative electrode Layer 333, and then its first OLED light-emitting substrate 100 and the 2nd OLED light-emitting substrates 200 bonded face to face by conductive ink Together, not only preparation method is simple, with low cost, can effectively solve the problem of current display with double faces is thick and heavy, and can Two sides is while show different pictures before and after realizing OLED display with double faces.

Referring to Fig. 2, based on above-mentioned OLED display with double faces, the present invention also provides a kind of system of OLED display with double faces Make method, comprise the following steps:

Step S1, as shown in Figure 3 there is provided first substrate 110 and second substrate 210, in the first substrate 110 and second The first pixel electrode layer 121 and the second pixel electrode layer 221 are formed on substrate 210 respectively, in first pixel electrode layer 121 The first OLED organic function layers 122 and the 2nd OLED organic function layers 222 are formed respectively with the second pixel electrode layer 221, The He of the first reflective cathode layer 123 is formed respectively on the first OLED organic function layers 122 and the 2nd OLED organic function layers 222 Second reflective cathode layer 223, so as to obtain including first substrate 110, the first pixel electrode layer 121, the first OLED organic functionses First OLED light-emitting substrates 100 of the reflective cathode layer 123 of layer 122 and first, obtain including second substrate 210, the second pixel electricity 2nd OLED light-emitting substrates 200 of pole the 221, the 2nd OLED organic function layers 222 of layer and the second reflective cathode layer 223.Wherein, institute State the first pixel electrode layer 121, the first OLED organic function layers 122 and the first reflective cathode layer 123 and together constitute first OLED luminescent layers 120, first pixel electrode layer 121 as the first OLED luminescent layers 120 anode layer;The second pixel electricity Pole the 221, the 2nd OLED organic function layers 222 of layer and the second reflective cathode layer 223 together constitute the 2nd OLED luminescent layers 220, Second pixel electrode layer 221 as the 2nd OLED luminescent layers 220 anode layer.

Specifically, the reflective cathode layer 223 of the first reflective cathode layer 123 and second uses the metal material of high reflectance Material, such as aluminium, silver.

Further, the material of the material of first reflective cathode layer 123 and the second reflective cathode layer 223 is gold of the same race Belong to material or metal material not of the same race.

Specifically, the material of the material of first pixel electrode layer 121 and the second pixel electrode layer 221 is transparent leads Electric material, more preferably tin indium oxide (ITO).

Specifically, the first substrate 110 and second substrate 210 are tft array substrate, and the first substrate 110 is wrapped The first underlay substrate 111 and the first TFT layer 112 on first underlay substrate 111 are included, the second substrate 210 is wrapped The second underlay substrate 211 and the second TFT layer 212 on second underlay substrate 211 are included, wherein first TFT layer 112nd, the second TFT layer 212 is respectively used to be driven the first OLED luminescent layers 120 and the 2nd OLED luminescent layers 220.

Step S2, as shown in Figure 4 there is provided conductive ink, pass through spin coating, spraying or inkjet printing using the conductive ink Method makes the first conductive ink layer 130 on the first reflective cathode layer 123 of the first OLED light-emitting substrates 100, utilizes The conductive ink is cloudy in the second reflection of the 2nd OLED light-emitting substrates 200 by the method for spin coating, spraying or inkjet printing The second conductive ink layer 230 is made on pole layer 223.

Specifically, the conductive ink is conductive, and the conductive ink includes solvent and conductive material, the material For the material with high conductivity, the solvent preferable organic solvent, such as alcohol organic solvent and alkanes organic solvent.

Specifically, the step S2 also includes, and the conductive ink layer 230 of the first conductive ink layer 130 and second is entered Row prebake conditions, so that solvent volatilizees away in the conductive ink layer 230 of first conductive ink layer 130 and second.

Step S3, as shown in figure 5,200 pairs of groups of the first OLED light-emitting substrates 100 and the 2nd OLED light-emitting substrates are pressed, So that the first reflective cathode layer 123 and the second reflective cathode layer 223 pass through the first conductive ink layer 130 and the second conductive ink layer 230 are bonded together and collectively form total cathode layer 333, and then make it that the first OLED light-emitting substrates 100 and the 2nd OLED are luminous Substrate 200 is bonded together, and obtains OLED display with double faces as shown in Figure 1.

Specifically, in the step S3, under vacuum by the first OLED light-emitting substrates 100 and the luminous bases of the 2nd OLED 200 pairs of group pressings of plate;The step S3 also includes, after carrying out to group pressing, by the luminous bases of the first OLED being bonded together The OLED light-emitting substrates 200 of plate 100 and the 2nd are toasted, and OLED display with double faces is obtained after cooling.

Specifically, the OLED display with double faces obtained made by the present invention is when being shown, the first OLED lights The OLED light-emitting substrates 200 of substrate 100 and the 2nd share total cathode layer 333, by respective first pixel electrode layer 121 and Two pixel electrode layers 221 carry out identical or different driving, that is, input identical or different signal, just can realize while showing phase With picture or the technique effect of different pictures.

The preparation method of the OLED display with double faces of the present invention, passes through the first reflection in the first OLED light-emitting substrates 100 The first conductive ink layer 130 is made respectively on second reflective cathode layer 223 of the OLED light-emitting substrates 200 of cathode layer 123 and the 2nd With the second conductive ink layer 230, then 200 pairs of groups of the first OLED light-emitting substrates 100 and the 2nd OLED light-emitting substrates are pressed, made Obtain the first OLED light-emitting substrates 100 and the 2nd OLED light-emitting substrates 200 are bonded together, just can obtain OLED of good performance double Face display, not only preparation method is simple, with low cost, can effectively solve the problem of current display with double faces is thick and heavy, Er Qieneng Two sides is while show different pictures before and after enough realizing OLED display with double faces.

In summary, a kind of OLED display with double faces that the present invention is provided, including the luminous bases of the first OLED being oppositely arranged Plate and the 2nd OLED light-emitting substrates;Wherein, the first OLED light-emitting substrates and the 2nd OLED light-emitting substrates respective first are anti- Penetrate cathode layer and the second reflective cathode layer is bonded together by conductive ink and collectively forms total cathode layer, and then described first OLED light-emitting substrates and the 2nd OLED light-emitting substrates are bonded together face to face by conductive ink, not only preparation method letter It is single, it is with low cost, it can effectively solve the problem of current display with double faces is thick and heavy, and before and after can realizing OLED display with double faces Two sides shows different pictures simultaneously.A kind of preparation method for OLED display with double faces that the present invention is provided, makes obtain the respectively After one OLED light-emitting substrates and the 2nd OLED light-emitting substrates, in the first reflective cathode layer and second of the first OLED light-emitting substrates The first conductive ink layer and the second conductive ink layer are made respectively on second reflective cathode layer of OLED light-emitting substrates, then by One OLED light-emitting substrates and the 2nd OLED light-emitting substrates are to a group pressing so that the first OLED light-emitting substrates and the luminous bases of the 2nd OLED Plate is bonded together, and just can obtain OLED display with double faces of good performance, and not only preparation method is simple, with low cost, can have Effect solves the problem of current display with double faces is thick and heavy, and before and after OLED display with double faces can be realized two sides while showing difference Picture.

It is described above, for the person of ordinary skill of the art, can be with technique according to the invention scheme and technology Other various corresponding changes and deformation are made in design, and all these changes and deformation should all belong to the claims in the present invention Protection domain.

Claims (10)

1. a kind of OLED display with double faces, it is characterised in that including the first OLED light-emitting substrates (100) being oppositely arranged and second OLED light-emitting substrates (200);
Wherein, the first OLED light-emitting substrates (100) include first substrate (110) and leaned in the first substrate (110) The first pixel electrode layer (121), the first OLED organic function layers that the side of nearly 2nd OLED light-emitting substrates (200) is set gradually And the first reflective cathode layer (123) (122);
The 2nd OLED light-emitting substrates (200) include second substrate (210) and in the second substrate (210) close to first The second pixel electrode layer (221) that the side of OLED light-emitting substrates (100) is set gradually, the 2nd OLED organic function layers (222) And second reflective cathode layer (223);
First reflective cathode layer (123) and the second reflective cathode layer (223) are bonded together and common by conductive ink Total cathode layer (333) is constituted, and then the first OLED light-emitting substrates (100) and the 2nd OLED light-emitting substrates (200) are by leading Electric ink is bonded together face to face.
2. OLED display with double faces as claimed in claim 1, it is characterised in that the conductive ink is conductive, described Conductive ink includes solvent and conductive material, and the solvent is alcohol organic solvent or alkanes organic solvent.
3. OLED display with double faces as claimed in claim 1, it is characterised in that the material of first reflective cathode layer (123) The material of material and the second reflective cathode layer (223) is metal material;
The material of first reflective cathode layer (123) and the material of the second reflective cathode layer (223) be same metal material or Metal material not of the same race.
4. OLED display with double faces as claimed in claim 1, it is characterised in that the material of first pixel electrode layer (121) The material of material and the second pixel electrode layer (221) is tin indium oxide.
5. OLED display with double faces as claimed in claim 1, it is characterised in that the first substrate (110) and second substrate (210) it is tft array substrate, the first substrate (110) includes the first underlay substrate (111) and located at first substrate The first TFT layer (112) on substrate (111), the second substrate (210) includes the second underlay substrate (211) and located at described The second TFT layer (212) on second underlay substrate (211).
6. a kind of preparation method of OLED display with double faces, it is characterised in that comprise the following steps:
Step S1, offer first substrate (110) and second substrate (210), in the first substrate (110) and second substrate (210) the first pixel electrode layer (121) and the second pixel electrode layer (221) are formed on respectively, in first pixel electrode layer (121) the first OLED organic function layers (122) and the 2nd OLED organic functionses and on the second pixel electrode layer (221) are formed respectively Layer (222), first is formed on the first OLED organic function layers (122) and the 2nd OLED organic function layers (222) respectively Reflective cathode layer (123) and the second reflective cathode layer (223), so as to obtain including first substrate (110), the first pixel electrode layer (121), the first OLED light-emitting substrates (100) of the first OLED organic function layers (122) and the first reflective cathode layer (123), are obtained To including second substrate (210), the second pixel electrode layer (221), the 2nd OLED organic function layers (222) and the second reflective cathode 2nd OLED light-emitting substrates (200) of layer (223);
Step S2, offer conductive ink, using the conductive ink in first reflective cathode layer (123) and the second reflective cathode The first conductive ink layer (130) and the second conductive ink layer (230) are made respectively on layer (223);
Step S3, by the first OLED light-emitting substrates (100) and the 2nd OLED light-emitting substrates (200) to group pressing so that first is anti- Penetrate cathode layer (123) and the second reflective cathode layer (223) passes through the first conductive ink layer (130) and the second conductive ink layer (230) it is bonded together and collectively forms total cathode layer (333), and then causes the first OLED light-emitting substrates (100) and second OLED light-emitting substrates (200) are bonded together, and obtain OLED display with double faces.
7. the preparation method of OLED display with double faces as claimed in claim 6, it is characterised in that the conductive ink, which has, leads Electrically, the conductive ink includes solvent and conductive material, and the solvent is alcohol organic solvent or alkanes organic solvent;
In the step S2, the method for making the first conductive ink layer (130) is the method for spin coating, spraying or inkjet printing, system The method for making the second conductive ink layer (230) is the method for spin coating, spraying or inkjet printing.
8. the preparation method of OLED display with double faces as claimed in claim 6, it is characterised in that first reflective cathode layer (123) material and the material of the second reflective cathode layer (223) is metal material;
The material of first reflective cathode layer (123) and the material of the second reflective cathode layer (223) be same metal material or Metal material not of the same race.
9. the preparation method of OLED display with double faces as claimed in claim 6, it is characterised in that first pixel electrode layer (121) material and the material of the second pixel electrode layer (221) is tin indium oxide.
10. the preparation method of OLED display with double faces as claimed in claim 6, it is characterised in that the first substrate (110) It is tft array substrate with second substrate (210), the first substrate (110) includes the first underlay substrate (111) and located at institute The first TFT layer (112) on the first underlay substrate (111) is stated, the second substrate (210) includes the second underlay substrate (211) And the second TFT layer (212) on second underlay substrate (211).
CN201710563166.8A 2017-07-11 2017-07-11 OLED display with double faces and preparation method thereof CN107331687A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
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CN108777259A (en) * 2018-06-05 2018-11-09 上海天马有机发光显示技术有限公司 A kind of organic light emitting display panel and display device
CN108962938A (en) * 2017-12-26 2018-12-07 广东聚华印刷显示技术有限公司 The panel construction and display device of double-sided display
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