CN104617232A - Organic Light-Emitting Diodes (OLED) manufacturing method and OLED - Google Patents
Organic Light-Emitting Diodes (OLED) manufacturing method and OLED Download PDFInfo
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- CN104617232A CN104617232A CN201510001247.XA CN201510001247A CN104617232A CN 104617232 A CN104617232 A CN 104617232A CN 201510001247 A CN201510001247 A CN 201510001247A CN 104617232 A CN104617232 A CN 104617232A
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
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- H—ELECTRICITY
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- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
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- H—ELECTRICITY
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- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/17—Carrier injection layers
- H10K50/171—Electron injection layers
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Abstract
The invention discloses an OLED manufacturing method and an OLED. The OLED comprises an anode, a cathode and an organic function layer disposed between the anode and the cathode. The organic function layer comprises a first injection layer, a first transmission layer, at least one light emitting layer, a second transmission layer and a second injection layer which are stacked successively. The first injection layer comprises at least one first hole injection strip and at least one first electron injection strip which are arranged in a parallel, alternative and connected mode. The second injection layer comprises at least one second hole injection strip and at least one second electron injection strip which are arranged in a parallel, alternative and connected mode. The at least one second electron injection strip and the at least one second electron injection strip are arranged opposite to the at least one first hole injection strip and the at least one first electron injection strip respectively. Single-color or white light areas corresponding to the at least one first hole injection strip are lightened through alternating-current electricity, after positive and negative electrodes are switched, the single-color or white light areas corresponding to the at least one first electron injection strip are lightened within short time, and accordingly, the time is short, and human can only see the whole single-color or white light emitting layer through eyes.
Description
Technical field
The present invention relates to display and lighting field, particularly relate to a kind of organic electroluminescence device (OLED) manufacture method and OLED.
Background technology
Organic electroluminescence device (Organic Light-Emitting Diodes is called for short OLED) is selfluminous element, and it has light weight, ultra-thin, theoretical luminous efficiency is high, and more important point to make flexibility, no matter being illumination or display field, will be following developing direction.
The efficiency of luminous organic material and life-span are obtained for very large raising, especially recent years, the photoelectric properties of ruddiness and green organic luminescence have reached the requirement of industrialization completely, but the efficiency of blue light material is still very low, life-span is also very low, especially at high voltage with when lighting device for a long time, life-span and efficiency decay are more accelerated.Current display and lighting product is all driven by direct current, and the quality of product quality will by making for checking for a long time.When the overlong time used, the efficiency of luminescence unit and life-span can reduce fast, and its CIE also may change a lot simultaneously.Particularly for blue light emitting unit, its life-span and efficiency are inherently very low, are lighted for a long time by direct current, and its photoelectric properties attenuation ratio redness and green emitting unit all want fast.But no matter be at lighting field or in display field, blue light is absolutely necessary, do not have blue light to be just difficult to display white light, so blue light efficiency is low and life-span this difficult problem of difference needs to overcome.
For current OLED when lighting for a long time, its Unidirectional direct-current driving can cause charge carrier to be gathered in interface, especially, under hole and the unbalanced situation of electric transmission, form internal electric field when charge carrier is on the increase, luminous efficiency and the life-span of device can be reduced.After utilizing alternating current constantly to switch positive and negative driving, the internal electric field that charge carrier is formed can be destroyed, improve the life-span of luminescence unit.Meanwhile, there are some small impurities in the middle of luminescent device, there is the life-span that can affect device in the middle of device for a long time in these small impurities, therefore, is exchanged by generating positive and negative voltage, reach and eliminate impurity gradually, improves the life-span of device.
The electrically driven (operated) bidirectional luminescence device of interchange of the prior art is that the mode switched by reversal lights device, but its (hole injection layer) HIL and (electron injecting layer) EIL be realize injecting electronics according to the doping of certain ratio also can injected hole, some reactions may be produced after together with being doped to (electron injecting layer) EIL as (hole injection layer) HIL, hinder the injection in electronics or hole, so its carrier injection ability very weak, the electrically driven (operated) OLED of this interchange implements very difficult.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the invention provides a kind of OLED manufacture method and OLED, this OLED utilizes meticulous MASK to inject bar, electron injection bar in evaporation hole respectively, same implanted layer has parallel spaced-apart and connected hole and electron injection bar, realize same implanted layer both can inject electronics also can injected hole and the injection in electronics or hole can not be hindered, successively light two kinds of different colours light-emitting sections in short time, thus realize alternating current driving OLED white OLED; Or first allowed by alternating current and correspond to the first hole and inject the monochrome of bar or white light field is lighted, then under the positive and negative switching of alternating current, the monochrome or white portion that correspond to the first electron injection bar is lighted in short time, because the time is short, human eye only sees whole monochrome or white light-emitting layer.
Technical problem to be solved by this invention is achieved by the following technical programs:
A manufacture method for OLED, comprising:
One anode is provided;
Bar is injected in the first hole that anode is formed at least one parallel spaced-apart;
Anode is formed the first electron injection bar of at least one parallel spaced-apart; It is alternate with the first electron injection bar and be connected to the first implanted layer that bar is injected in described first hole;
First implanted layer is formed the first transport layer;
Described first transport layer forms at least one luminescent layer;
Luminescent layer is formed the second transport layer;
Second transport layer is formed the second electron injection bar of at least one parallel spaced-apart; Described second electron injection bar and the first hole are injected bar and are oppositely arranged;
Bar is injected in the second hole that second transport layer is formed at least one parallel spaced-apart; Bar is injected in described second hole and the first electron injection bar is oppositely arranged; It is alternate with the second electron injection bar and be connected to the second implanted layer that bar is injected in described second hole;
Second implanted layer forms negative electrode.
Further, described anode and negative electrode are Ag electrode.
Further, described first hole inject bar and the first electron injection bar thickness identical or different; Described second hole inject bar and the second electron injection bar thickness identical or different.
Further, described luminescent layer is Yellow luminous layer or blue light-emitting layer or red light emitting layer or white light-emitting layer.
Further, described first transport layer forms at least one luminescent layer specifically to comprise:
First transport layer is formed the first colour light emitting bar of at least one parallel spaced-apart, and described first colour light emitting bar and the first hole are injected bar and are oppositely arranged;
First transport layer is formed the second colour light emitting bar of at least one parallel spaced-apart, and described second colour light emitting bar and the first electron injection bar are oppositely arranged; Described first colour light emitting bar is alternate with the second colour light emitting bar and be connected to luminescent layer.
Further, described first colour light emitting bar and the second colour light emitting bar are respectively Yellow luminous bar or blue-light-emitting bar, and described first colour light emitting bar is different with the glow color of the second colour light emitting bar.
Further, described first colour light emitting bar and the second colour light emitting bar are respectively emitting red light bar or blue-light-emitting bar, and described first colour light emitting bar is different with the glow color of the second colour light emitting bar.
A kind of OLED, comprising:
Anode;
Negative electrode;
Organic function layer between described anode and negative electrode; Described organic function layer comprises the first implanted layer of lamination successively, the first transport layer, at least one luminescent layer, the second transport layer and the second implanted layer; Wherein,
Described first implanted layer comprises at least one first hole and injects bar and at least one first electron injection bar, and bar and the first electron injection bar parallel spaced-apart are injected and arranged end in described first hole;
Described second implanted layer comprises at least one second hole and injects bar and at least one second electron injection bar, bar and the second electron injection bar parallel spaced-apart are injected and arranged end in described second hole, and described second electron injection bar and the second hole are injected bar and injected bar with described first hole respectively and the first electron injection bar is oppositely arranged.
Further, described luminescent layer is red light emitting layer or blue light-emitting layer or red light emitting layer or white light-emitting layer.
Further, described anode and negative electrode are Ag electrode.
Further, described first hole inject bar and the first electron injection bar thickness identical or different; Described second hole inject bar and the second electron injection bar thickness identical or different.
Further, described luminescent layer comprises the first colour light emitting bar and the second colour light emitting bar, described first colour light emitting bar and the second colour light emitting bar parallel spaced-apart and arranged end, it is corresponding that bar is injected in first colour light emitting bar and described first hole, and the second colour light emitting bar is corresponding with described first electron injection bar.Further, described first colour light emitting bar and the second colour light emitting bar are respectively Yellow luminous bar or blue-light-emitting bar, and described first colour light emitting bar is different with the glow color of the second colour light emitting bar.
Further, described first colour light emitting bar and the second colour light emitting bar are respectively emitting red light bar or blue-light-emitting bar, and described first colour light emitting bar is different with the glow color of the second colour light emitting bar.
The present invention has following beneficial effect:
(1) separate evaporation by MASK to realize same implanted layer and there is parallel spaced-apart and connected hole and electron injection bar, realize same implanted layer both can inject electronics also can injected hole and the injection in electronics or hole can not be hindered, successively light two kinds of different colours light-emitting sections in short time, thus realize alternating current driving OLED white OLED; OLED also by regulating the light-emitting area of two kinds of colors to obtain other colors;
(2) by exchanging electrically driven (operated) mode, first light to a wherein colour light emitting bar, be switched to negative pressure more fast to drive, and then get back to and light another colour light emitting bar, positive/negative-pressure repeatedly drives, the charge carrier eliminating the non-compound on OLED internal interface and the internal electric field formed by these charge carriers, long-term negative pressure effectively can eliminate some impurity etc. making luminescence unit aging simultaneously, the life-span of luminescence unit can be improved greatly, especially to the blue light emitting bar that the life-span is shorter; Exchanged by generating positive and negative voltage, reach and eliminate impurity gradually, improve the life-span of device;
(3) select Ag as electrode, change its transmitance and reflectivity can realize certain microcavity effect.There is very large potential barrier with electron transfer layer or hole transmission layer in the work function of Ag, but after the applicable electron injecting layer of insertion one or hole injection layer are modified, just can improve the injection effect in electronics and hole;
(4) same implanted layer can be realized by the meticulous MASK of two kinds of different structures and there is parallel spaced-apart and connected hole and electron injection bar, with the luminescent layer of two kinds of colour light emitting bars, not only save manufacturing cost and reached the requirement of energy-conserving and environment-protective; Drive monochromatic luminescent layer by alternating current, remove twice MASK, reduce costs further.
Accompanying drawing explanation
Fig. 1 is the sectional view of OLED of the present invention;
Fig. 2 is the vertical view of the first meticulous MASK in the present invention;
Fig. 3 is the vertical view of the second meticulous MASK in the present invention;
Fig. 4 a to 4h is the manufacture process schematic diagram of the OLED of embodiment 1 in the present invention;
Fig. 5 a to 5h is the manufacture process schematic diagram of the OLED of embodiment 2 in the present invention;
Fig. 6 is the sectional view of the OLED of embodiment 3 in the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be described in detail, and wherein identical reference numerals represents identical element all the time.
With reference to Fig. 1, a kind of OLED, comprise substrate 1 and be positioned at least one pixel on substrate 1, described pixel comprises:
Anode 2;
Negative electrode 8;
Organic function layer between described anode 2 and negative electrode 8; Described organic function layer comprises the first implanted layer 3, first transport layer 4 of lamination successively, at least one luminescent layer 5, second transport layer 6 and the second implanted layer 7; Wherein,
Described first implanted layer 3 comprises at least one first hole and injects bar 31 and at least one first electron injection bar 32, and bar 31 and the first electron injection bar 32 parallel spaced-apart are injected and arranged end in described first hole;
Described second implanted layer 7 comprises at least one second hole and injects bar 71 and at least one second electron injection bar 72, bar 71 and the second electron injection bar 72 parallel spaced-apart are injected and arranged end in described second hole, and described second electron injection bar 72 and the second hole are injected bar 71 and injected bar 31 with described first hole respectively and the first electron injection bar 32 is oppositely arranged.
Wherein, described substrate 1 can be flexible or rigid substrates 1, and can also be plastics or glass substrate 1, described substrate 1 can be transparent or opaque substrate 1.Described pixel preferably but do not limit and be arranged in array.Described anode 2 and negative electrode 8 preferably but do not limit Ag electrode, can also be other bipolar electrodes.Ag is as electrode, its transmitance can be changed and reflectivity realizes certain microcavity effect, and there is very large potential barrier with electron transfer layer or hole transmission layer in the work function of Ag, but after the applicable electron injecting layer of insertion one or hole injection layer are modified, just can improve the injection effect in electronics and hole.Described Ag electrode is preferably 80 ~ 120nm as the thickness of electrode with reverberation effect, and described Ag electrode is preferably 15 ~ 25nm as euphotic electrode, and when also can use according to reality, the bright dipping of different components regulates and selects its suitable thickness.Ag electrode preferably but the mode not being defined through thermal evaporation carry out evaporation and obtain.
Preferably but do not limit, to inject bar 31 identical with the first electron injection bar 32 thickness and/or width in described first hole; It is identical with the second electron injection bar 72 thickness and/or width that bar 71 is injected in described second hole, and wherein, the material that bar 71 is injected in described first hole injection bar 31 and the second hole is preferably identical, but also can be different; Described first electron injection bar 32 is preferably identical with the material of the second electron injection bar 72, but also can be different.The preferred TC1305:10%HAT-CN(thickness of the material preferably 40 ~ 50nm of bar (bar 31 is injected in the first hole and/or bar 71 is injected in the second hole) is injected in described hole) or TC1305:10%MoO
3(thickness is 40 ~ 50nm preferably) or MoO
3(thickness is 3 ~ 8nm preferably); Preferred Liq: the 50%ET051(thickness of the material preferably 25 ~ 35nm of described electron injection bar (first electron injection bar 32 and/or the second electron injection bar 72)) or Liq(thickness preferably 3 ~ 8nm), but be not limited to this, can according to different depositing devices during specific implementation, its suitable thickness and doping ratio got by different cavity environments and different devices.Bar 31 and the corresponding setting of the second electron injection bar 72 are injected in described first hole, and namely in vertical direction, its area correspondent equal is identical with position correspondence; The corresponding setting of bar 71 is injected in described first electron injection bar 32 and the second hole, and namely in vertical direction, its area correspondent equal is identical with position correspondence.Described first hole injection bar 31 is with the first electron injection bar 32 parallel spaced-apart and arranged end becomes the first implanted layer 3, described second hole injection bar 71 is with the second electron injection bar 72 parallel spaced-apart and arranged end becomes the second implanted layer 7, namely same implanted layer have hole and electron injection bar, realize same implanted layer both can inject electronics also can injected hole, also prevent electron injecting layer or hole injection layer adulterate respectively with hole or electronics dopant material and hinder the injection in electronics or hole.
Implanted layer is to allow electronics or hole be injected into respectively on electron transfer layer or hole transmission layer, and electrode is identical, can the injection in better balance electronic and hole.Bar is injected in hole and electron injection bar can be identical thickness, also can be different thickness, modifies situation depending on it to electrode interface.Implanted layer involved in the present invention preferably but the mode evaporation not being defined through resistance wire thermal evaporation obtain, can also be obtained by other physical deposition method, and preferably adopt meticulous MASK.
Preferably but do not limit, the material of described first transport layer 4 and the second transport layer 6 may be the same or different, and the material of transport layer (first transport layer 4 and/or the second transport layer 6) is preferably VOM1973, and its hole is suitable with electron mobility, is respectively 1.06 ﹡ 10
-3cm
2/ VS and 1.08 ﹡ 10
-3cm
2/ VS; Or VOM1972, its hole and electron mobility are respectively 1.31 ﹡ 10
-3cm
2/ VS and 1.38 ﹡ 10
-3cm
2/ VS; Or the EET48 of Taiwan ERAY, there is reasonable electronics and hole mobility, be respectively 3.3 ﹡ 10
-4cm
2/ VS and 1.6 ﹡ 10
-3cm
2/ VS; Can also be other suitable transport layer materials.The thickness of described transport layer is preferably 15 ~ 30nm, but does not limit to therewith, can according to different depositing devices during specific implementation, and its suitable thickness got by different cavity environments and different devices.Described first transport layer 4 covers on described first implanted layer 3, and described second transport layer 6 covers on described luminescent layer 5.This transport layer (first transport layer 4 and the second transport layer 6) has good transmission electronic, simultaneously also can transporting holes, also has reversible redox, and the mobility in high electronics and hole.The HOMO energy level of described transport layer or lumo energy need match with the HOMO energy level of implanted layer or lumo energy, have higher Tg simultaneously.Described transport layer preferably but be not defined through resistance wire thermal evaporation carry out evaporation obtain.
Preferably but do not limit, described OLED is White OLED devices.Described OLED can also be other multi-color OLED device.
For White OLED devices, described luminescent layer 5 comprises the first colour light emitting bar 51 and the second colour light emitting bar 52, described first colour light emitting bar 51 and the second colour light emitting bar 52 parallel spaced-apart and arranged end, it is corresponding that bar 31 is injected in first colour light emitting bar 51 and described first hole, and the second colour light emitting bar 52 is corresponding with described first electron injection bar 32.Described first colour light emitting bar 51 and the second colour light emitting bar 52 are respectively Yellow luminous bar or blue-light-emitting bar, and described first colour light emitting bar 51 is different with the glow color of the second colour light emitting bar 52; All right, described first colour light emitting bar 51 and the second colour light emitting bar 52 are respectively emitting red light bar or blue-light-emitting bar, and described first colour light emitting bar 51 is different with the glow color of the second colour light emitting bar 52, described blue-light-emitting strip material is preferably VOM1511:3%VOM1706, and thickness is preferably 20 ~ 40nm; Described Yellow luminous strip material is preferably EB43:5%T-YD065, and thickness is preferably 20 ~ 40nm; Described emitting red light strip material is preferably T-RH008:3%T-RD016, and thickness is preferably 20 ~ 40nm, but is not limited to this.The thickness of described first colour light emitting bar 51 and the second colour light emitting bar 52 may be the same or different, the thickness of these two kinds of colour light emitting bars is preferably 25 ~ 35nm, but be not limited to this, can according to different depositing devices during specific implementation, its suitable thickness got by different cavity environments and different devices.It is identical with position correspondence that the light-emitting area of described first colour light emitting bar 51 or the second colour light emitting bar 52 injects bar area correspondent equal with the electron injection bar of implanted layer or hole in vertical direction.The luminescent layer 5 comprising described first colour light emitting bar 51 and the second colour light emitting bar 52 can also be the white light-emitting layer that flood covers in described first transport layer, its material is preferably the preferred 30nm of VOM1511:3%VOM1706(thickness)/preferred the 30nm of BAHT1:3%NI903(thickness), but be not limited to this, can according to different depositing devices during specific implementation, different cavity environments and different devices get its suitable material and thickness.
For other multi-color OLED device, described luminescent layer 5 can also be the monochromatic luminescent layer that flood covers in described first transport layer, wherein monochromatic luminescent layer can be blue light-emitting layer (material is preferably VOM1511:3%VOM1706, thickness is preferably 20 ~ 40nm) or Yellow luminous layer (material is preferably EB43:5%T-YD065, thickness is preferably 20 ~ 40nm) or red light emitting layer (material is preferably T-RH008:3%T-RD016, thickness is preferably 20 ~ 40nm), but be not limited to this.Can according to different depositing devices during specific implementation, its optimization thickness and doping ratio got by different cavity environments and different devices.
Described luminescent layer 5 material has higher Tg, and its HOMO energy level and lumo energy, with the HOMO energy level of transport layer or lumo energy coupling, preferably but be not defined through resistance wire thermal evaporation and carry out evaporation and obtain, and preferably adopt meticulous MASK.When described luminescent layer 5 is monochrome or the white light-emitting layer of flood, does not need MASK during the deposition processs such as evaporation, can reduce costs further.
VOM1973, VOM1972, VOM1511, VOM1706 are the material that Beijing Visionox company provides; EET48, HAT-CN, ET051, EB43 are the material that Yulei Optoelectronics Technology Co., Ltd. (e-Ray Optoelectronics Technology Co., Ltd.) provides; TC1305, T-YD065, T-RD016, T-RH008 are the material that Tetrahedron Technology Corporation provides; BAHT1 and MoO
3be the material that Guangdong A Geleiya Photoelectric Co., Ltd. provides; Liq is HEESUNG(Xi Xing Electronics Co., Ltd.) material that provides; The material that NI903 provides for Nichem Fine Technology co.Ltd.The doping percentage mentioned in literary composition is all adulterate according to the percentage of material weight, as TC1305:3%HAT-CN, when the quality of TC1305 is 100, then HAT-CN is 3, bi-material with the speed of 100:3 (namely mass ratio is converted to speed ratio by crystal oscillator detector) evaporation or sputtering etc. simultaneously deposition process, finally forms thin film respectively together.
When evaporation implanted layer and luminescent layer 5, use 6 meticulous MASK are needed to carry out evaporation, preferably but do not limit, bar 31 is injected in first hole, first of same structure the meticulous MASK 91(can be used as shown in Figure 2 when the second electron injection bar 72 and the first colour light emitting bar 51 or the second colour light emitting bar 52 evaporation, white department is the part of hollow out), first electron injection bar 32, second hole can use second of same structure the meticulous MASK 92(as shown in Figure 3 when injecting bar 71 and the first colour light emitting bar 51 or the second colour light emitting bar 52 evaporation, white department is the part of hollow out), first meticulous MASK 91 and the second meticulous MASK 92 can exchange use.Obtained by these two kinds of meticulous MASK, the area of openwork part can design according to certain ratio, such as 1:1 or 1:2, this ratio is adjustable, designs according to the ratio of its optimization light-emitting area during two kinds of glow colors (combining as blue and yellow or blue and red combination) formation white light.Meanwhile, the openings of sizes of meticulous MASK is variable, can regulate according to the display effect forming white light.Inject with two of the first meticulous MASK 91 evaporations area and the position that bars and colour light emitting bar have equity in vertical direction, inject bars with two of the second meticulous MASK 92 evaporations and colour light emitting bar has reciprocity area and position in vertical direction.
Be described further the concrete structure of OLED of the present invention and manufacture process below in conjunction with drawings and Examples, in order to be beneficial to accompanying drawings, on accompanying drawing, homogeneous single pixel illustrates.
Embodiment 1
A kind of OLED, comprise substrate 100 and be positioned at least one pixel on substrate 100, described pixel comprises:
Anode 200;
Negative electrode 800;
Organic function layer between described anode 200 and negative electrode 800; Described organic function layer comprises the first implanted layer 300, first transport layer 400, luminescent layer 500, second transport layer 600 and the second implanted layer 700 of lamination successively; Wherein,
Described first implanted layer 300 comprises five the first holes and injects bar 310 and five the first electron injection bars 320, and bar 310 and the first electron injection bar 320 parallel spaced-apart are injected and arranged end in described first hole;
Described second implanted layer 700 comprises five the second holes and injects bar 710 and five the second electron injection bars 720, bar 710 and the second electron injection bar 720 parallel spaced-apart are injected and arranged end in described second hole, and described second electron injection bar 720 and the second hole are injected bar 710 and injected bar 310 with described first hole respectively and the first electron injection bar 320 is oppositely arranged;
Described luminescent layer 500 comprises five the first colour light emitting bars 510 and five the second colour light emitting bars 520, described first colour light emitting bar 510 and the second colour light emitting bar 520 parallel spaced-apart and arranged end, first colour light emitting bar 510 is blue-light-emitting bar and to inject bar 310 corresponding with described first hole, and the second colour light emitting bar 520 is Yellow luminous bar and corresponding with described first electron injection bar 320.
Please refer to Fig. 4 a to 4h, the manufacture process of this OLED is as follows:
S11, provide a plastic base 100, and form an Ag electrode as anode 200 by evaporation on this substrate 100, thickness is 15nm;
S12, anode 200 carries out by the first meticulous MASK 91 the first hole that evaporation forms five parallel spaced-apart inject bar 310, it is TC1305:10%HAT-CN that bar 310 material is injected in described first hole, and thickness is 45nm;
Anode 200 carries out by the second meticulous MASK 92 the first electron injection bar 320 that evaporation forms five parallel spaced-apart, and described first electron injection bar 320 material is Liq:50%ET051, and its thickness is 30nm;
By the first meticulous MASK 91 will evaporation the first electron injection bar 320 partial occlusion live, and by the second meticulous MASK 92, the partial occlusion that bar 310 is injected in the first good for evaporation hole is lived, obtainedly inject bar 310 with the first electron injection bar 320 parallel spaced-apart and the first implanted layer 300 of becoming of arranged end by described first hole;
S13, on the first implanted layer 300, form the first transport layer 400 by evaporation, described first transport layer 400 covers the first implanted layer 300; Described first transport layer 400 material is VOM1973, and thickness is 15nm;
S14, in the first transport layer 400, carry out the first colour light emitting bar 510 that evaporation forms five parallel spaced-apart by the first meticulous MASK 91, described first colour light emitting bar 510 is blue-light-emitting bar; Described blue-light-emitting strip material is VOM1511:3%VOM1706, and thickness is 30nm;
First transport layer 400 carries out by the second meticulous MASK 92 the second colour light emitting bar 520 that evaporation forms five parallel spaced-apart, and described second colour light emitting bar 520 is Yellow luminous bar; Described Yellow luminous layer material is EB43:5%T-YD065, and thickness is 30nm;
By the first meticulous MASK 91 will evaporation the second colour light emitting bar 520 partial occlusion live, and by the second meticulous MASK 92, the partial occlusion of the first good for evaporation colour light emitting bar 510 is lived, obtained by described first colour light emitting bar 510 with the second colour light emitting bar 520 parallel spaced-apart and the luminescent layer 500 that becomes of arranged end;
S15, on luminescent layer 500, form the second transport layer 600 by evaporation; Described second transport layer 600 covers luminescent layer 500, and the material VOM1972 of described second transport layer 600, thickness is 15nm
S16, in the second transport layer 600, carry out by the first meticulous MASK 91 the second electron injection bar 720 that evaporation forms five parallel spaced-apart;
Second transport layer 600 carries out by the second meticulous MASK 92 the second hole injection bar 710 that evaporation forms five parallel spaced-apart; Described second hole inject the material of bar 710 and the second electron injection bar 720 and thickness inject the material of bar 310 and the first electron injection bar 320 respectively with described first hole and thickness identical;
By the first meticulous MASK 91 will evaporation second hole inject bar 710 partial occlusion live, and by the second meticulous MASK 92, the partial occlusion of the second good for evaporation electron injection bar 720 is lived, obtained inject bar 710 parallel spaced-apart by described second electron injection bar 720 with the second hole and the second implanted layer 700 of becoming of arranged end;
S17, on the second implanted layer 700, form Ag electrode by evaporation, as negative electrode 800, thickness is 100nm.
This OLED is lighted when forward voltage, do not work when negative voltage, switch generating positive and negative voltage fast by alternating current, two kinds of colour light emitting bars one bright one to be gone out at short notice, it is secretly bright that human eye is difficult to resolution in the short time, then realize white-light emitting by blue and yellow combination.
Embodiment 2
A kind of OLED, comprise substrate 100 and be positioned at least one pixel on substrate 100, described pixel comprises:
Anode 200;
Negative electrode 800;
Organic function layer between described anode 200 and negative electrode 800; Described organic function layer comprises the first implanted layer 300, first transport layer 400, luminescent layer 500, second transport layer 600 and the second implanted layer 700 of lamination successively; Wherein,
Described first implanted layer 300 comprises five the first holes and injects bar 310 and five the first electron injection bars 320, and bar 310 and the first electron injection bar 320 parallel spaced-apart are injected and arranged end in described first hole;
Described second implanted layer 700 comprises five the second holes and injects bar 710 and five the second electron injection bars 720, bar 710 and the second electron injection bar 720 parallel spaced-apart are injected and arranged end in described second hole, and described second electron injection bar 720 and the second hole are injected bar 710 and injected bar 310 with described first hole respectively and the first electron injection bar 320 is oppositely arranged;
Described luminescent layer 500 comprises five the first colour light emitting bars 510 and five the second colour light emitting bars 520, described first colour light emitting bar 510 and the second colour light emitting bar 520 parallel spaced-apart and arranged end, first colour light emitting bar 510 is emitting red light bar and to inject bar 310 corresponding with described first hole, and the second colour light emitting bar 520 is blue-light-emitting bar and corresponding with described first electron injection bar 320.
Please refer to Fig. 5 a to 5h, the manufacture process of this OLED is as follows:
S21, provide a glass substrate 100, and on this substrate 100 by sputtering formation one Ag electrode as anode 200, thickness is 20nm;
S22, on anode 200, carry out the first electron injection bar 320 that evaporation forms five parallel spaced-apart by the first meticulous MASK 91, described first electron injection bar 320 material is Liq, and thickness is 5nm;
Anode 200 carries out by the second meticulous MASK 92 the first hole injection bar 310 that evaporation forms five parallel spaced-apart, and it is MoO that bar 310 material is injected in described first hole
3, thickness is 5nm;
By the first meticulous MASK 91 will evaporation first hole inject bar 310 partial occlusion live, and by the second meticulous MASK 92, the partial occlusion of the first good for evaporation electron injection bar 320 is lived, obtained inject bar 310 with the first electron injection bar 320 parallel spaced-apart and the first implanted layer 300 of becoming of arranged end by described first hole;
S23, on the first implanted layer 300 by sputtering formation first transport layer 400, described first transport layer 400 covers the first implanted layer 300; The material of described first transport layer 400 is EET48, and thickness is 20nm;
S24, in the first transport layer 400, carry out the second colour light emitting bar 520 that evaporation forms five parallel spaced-apart by the first meticulous MASK 91, described second colour light emitting bar 520 is blue-light-emitting bar; Described blue-light-emitting strip material is VOM1511:3%VOM1706, and thickness is 20nm;
First transport layer 400 carries out by the second meticulous MASK 92 the first colour light emitting bar 510 that evaporation forms five parallel spaced-apart, and described first colour light emitting bar 510 is emitting red light bar; Described emitting red light strip material is T-RH008:3%T-RD016, and thickness is 20nm;
By the first meticulous MASK 91 will evaporation the first colour light emitting bar 510 partial occlusion live, and by the second meticulous MASK 92, the partial occlusion of the second good for evaporation colour light emitting bar 520 is lived, obtained by described first colour light emitting bar 510 with the second colour light emitting bar 520 parallel spaced-apart and the luminescent layer 500 that becomes of arranged end;
S25, on luminescent layer 500 by sputtering formation second transport layer 600; Described second transport layer 600 covers luminescent layer 500, and the material VOM1973 thickness of described second transport layer 600 is 20nm;
S26, in the second transport layer 600, carry out the second electron injection bar 720 that evaporation forms five parallel spaced-apart by the second meticulous MASK 92, the thickness of described second electron injection bar 720 is Liq, and thickness is 5nm;
Second transport layer 600 carries out by the first meticulous MASK 91 the second hole injection bar 710 that evaporation forms five parallel spaced-apart, and the material that bar 710 is injected in described second hole is MoO
3, thickness is 5nm;
By the second meticulous MASK 92 will evaporation second hole inject bar 710 partial occlusion live, and by the first meticulous MASK 91, the partial occlusion of the second good for evaporation electron injection bar 720 is lived, obtained inject bar 710 parallel spaced-apart by described second electron injection bar 720 with the second hole and the second implanted layer 700 of becoming of arranged end;
S27, on the second implanted layer 700, form Ag electrode by sputtering, as negative electrode 800, thickness is 100nm.
This OLED is lighted when forward voltage, do not work when negative voltage, switch generating positive and negative voltage fast by alternating current, two kinds of colour light emitting bars one bright one to be gone out at short notice, it is secretly bright that human eye is difficult to resolution in the short time, then realize white-light emitting by blue and red combination.
Embodiment 3
Please refer to Fig. 6, a kind of OLED, comprise substrate 100 and be positioned at least one pixel on substrate 100, described pixel comprises:
Anode 200;
Negative electrode 800;
Organic function layer between described anode 200 and negative electrode 800; Described organic function layer comprises the first implanted layer 300, first transport layer 400, luminescent layer 500, second transport layer 600 and the second implanted layer 700 of lamination successively; Wherein,
Described first implanted layer 300 comprises five the first holes and injects bar 310 and five the first electron injection bars 320, and bar 310 and the first electron injection bar 320 parallel spaced-apart are injected and arranged end in described first hole;
Described second implanted layer 700 comprises five the second holes and injects bar 710 and five the second electron injection bars 720, bar 710 and the second electron injection bar 720 parallel spaced-apart are injected and arranged end in described second hole, and described second electron injection bar 720 and the second hole are injected bar 710 and injected bar 310 with described first hole respectively and the first electron injection bar 320 is oppositely arranged;
Described luminescent layer 500 is white light-emitting layer.
The manufacture process of this OLED is as follows:
S31, provide a glass substrate 100, and on this substrate 100 by sputtering formation one Ag electrode as anode 200, thickness is 25nm;
S22, on anode 200, carry out the first electron injection bar 320 that evaporation forms five parallel spaced-apart by the first meticulous MASK 91, described first electron injection bar 320 is Liq:50%ET051, its thickness 30nm;
Anode 200 carries out by the second meticulous MASK 92 the first hole injection bar 310 that evaporation forms five parallel spaced-apart, and it is TC1305:10%MoO that bar 310 material is injected in described first hole
3, thickness is 35nm;
By the first meticulous MASK 91 will evaporation first hole inject bar 310 partial occlusion live, and by the second meticulous MASK 92, the partial occlusion of the first good for evaporation electron injection bar 320 is lived, obtained inject bar 310 with the first electron injection bar 320 parallel spaced-apart and the first implanted layer 300 of becoming of arranged end by described first hole;
S33, on the first implanted layer 300 by sputtering formation first transport layer 400, described first transport layer 400 covers the first implanted layer 300; The material of described first transport layer 400 is EET48, and thickness is 30nm;
S34, in the first transport layer 400, form white light-emitting layer by evaporation, described white light-emitting layer is the lamination of VOM1511:3%VOM1706 and BAHT1:3%NI903, and its thickness is 30nm;
S35, on luminescent layer 500 by sputtering formation second transport layer 600; Described second transport layer 600 covers luminescent layer 500, and the material VOM1973 thickness of described second transport layer 600 is 30nm;
S36, in the second transport layer 600, carry out the second electron injection bar 720 that evaporation forms five parallel spaced-apart by the second meticulous MASK 92, the thickness of described second electron injection bar 720 is Liq, and thickness is 5nm;
Second transport layer 600 carries out by the first meticulous MASK 91 the second hole injection bar 710 that evaporation forms five parallel spaced-apart, and the material that bar 710 is injected in described second hole is MoO
3, thickness is 5nm;
By the second meticulous MASK 92 will evaporation second hole inject bar 710 partial occlusion live, and by the first meticulous MASK 91, the partial occlusion of the second good for evaporation electron injection bar 720 is lived, obtained inject bar 710 parallel spaced-apart by described second electron injection bar 720 with the second hole and the second implanted layer 700 of becoming of arranged end;
S37, on the second implanted layer 700, form Ag electrode by sputtering, as negative electrode 800, thickness is 120nm.
This OLED is first allowed by alternating current and corresponds to the first hole and inject the monochrome of bar or white light field is lighted, then under the positive and negative switching of alternating current, the monochrome or white portion that correspond to the first electron injection bar is lighted in short time, because the time is short, human eye only sees whole monochrome or white light-emitting layer.
Described OLED realizes same implanted layer having electron injection bar by twice meticulous MASK and bar is injected in hole, and utilizes between anode and negative electrode and apply alternating current to drive, and successively lights two kinds of colour light emitting bars.Spatially, two kinds of colors do enough little by meticulous MASK and close time, utilize eye space to differentiate rate variance and visual persistence, allow human eye perceives dual base color be the same place simultaneously appearing at same surface, thus realize alternating current driving OLED white light parts.Also other color devices can be realized by different light-emitting area ratios.When the area ratio of adjacent dual base color changes, the light intensity that they send respectively also can change, the light of different colours is superimposed together with different light intensity, chromaticity coordinates (CIE) just can change, so spectrum also can red shift or blue shift, now just can design the luminescent device of different colours.
The above embodiment only have expressed embodiments of the present invention; it describes comparatively concrete and detailed; but therefore can not be interpreted as the restriction to the scope of the claims of the present invention; in every case the technical scheme adopting the form of equivalent replacement or equivalent transformation to obtain, all should drop within protection scope of the present invention.
Claims (10)
1. an OLED manufacture method, is characterized in that, comprising:
One anode is provided;
Bar is injected in the first hole that anode is formed at least one parallel spaced-apart;
Anode is formed the first electron injection bar of at least one parallel spaced-apart; It is alternate with the first electron injection bar and be connected to the first implanted layer that bar is injected in described first hole;
First implanted layer is formed the first transport layer;
Described first transport layer forms at least one luminescent layer;
Luminescent layer is formed the second transport layer;
Second transport layer is formed the second electron injection bar of at least one parallel spaced-apart; Described second electron injection bar and the first hole are injected bar and are oppositely arranged;
Bar is injected in the second hole that second transport layer is formed at least one parallel spaced-apart; Bar is injected in described second hole and the first electron injection bar is oppositely arranged; It is alternate with the second electron injection bar and be connected to the second implanted layer that bar is injected in described second hole;
Second implanted layer forms negative electrode.
2. OLED manufacture method according to claim 1, is characterized in that, described anode and negative electrode are Ag electrode.
3. OLED manufacture method according to claim 1, is characterized in that, described luminescent layer is Yellow luminous layer or blue light-emitting layer or red light emitting layer or white light-emitting layer.
4. OLED manufacture method according to claim 1, is characterized in that, described first transport layer forms at least one luminescent layer and specifically comprises:
First transport layer is formed the first colour light emitting bar of at least one parallel spaced-apart, and described first colour light emitting bar and the first hole are injected bar and are oppositely arranged;
First transport layer is formed the second colour light emitting bar of at least one parallel spaced-apart, and described second colour light emitting bar and the first electron injection bar are oppositely arranged; Described first colour light emitting bar is alternate with the second colour light emitting bar and be connected to luminescent layer.
5. OLED manufacture method according to claim 4, it is characterized in that, described first colour light emitting bar and the second colour light emitting bar are respectively Yellow luminous bar or blue-light-emitting bar, and described first colour light emitting bar is different with the glow color of the second colour light emitting bar.
6. OLED manufacture method according to claim 4, it is characterized in that, described first colour light emitting bar and the second colour light emitting bar are respectively emitting red light bar or blue-light-emitting bar, and described first colour light emitting bar is different with the glow color of the second colour light emitting bar.
7., according to the arbitrary described OLED manufacture method of claim 1 to 6, it is characterized in that, described first hole inject bar and the first electron injection bar thickness identical or different; Described second hole inject bar and the second electron injection bar thickness identical or different.
8. an OLED, comprising:
Anode;
Negative electrode;
Organic function layer between described anode and negative electrode; Described organic function layer comprises the first implanted layer of lamination successively, the first transport layer, at least one luminescent layer, the second transport layer and the second implanted layer; Wherein,
Described first implanted layer comprises at least one first hole and injects bar and at least one first electron injection bar, and bar and the first electron injection bar parallel spaced-apart are injected and arranged end in described first hole;
Described second implanted layer comprises at least one second hole and injects bar and at least one second electron injection bar, bar and the second electron injection bar parallel spaced-apart are injected and arranged end in described second hole, and described second electron injection bar and the second hole are injected bar and injected bar with described first hole respectively and the first electron injection bar is oppositely arranged.
9. OLED according to claim 8, is characterized in that, described luminescent layer is Yellow luminous layer or blue light-emitting layer or red light emitting layer or white light-emitting layer.
10. OLED according to claim 8, it is characterized in that, described luminescent layer comprises the first colour light emitting bar and the second colour light emitting bar, described first colour light emitting bar and the second colour light emitting bar parallel spaced-apart and arranged end, it is corresponding that bar is injected in first colour light emitting bar and described first hole, and the second colour light emitting bar is corresponding with described first electron injection bar.
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