CN208955023U - Organic LED display device - Google Patents
Organic LED display device Download PDFInfo
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- CN208955023U CN208955023U CN201821715302.7U CN201821715302U CN208955023U CN 208955023 U CN208955023 U CN 208955023U CN 201821715302 U CN201821715302 U CN 201821715302U CN 208955023 U CN208955023 U CN 208955023U
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Abstract
A kind of organic LED display device includes substrate, the first, second electrode, the first, second organic layer, common luminescent layer and the first, second luminescent layer.Substrate, first electrode, the first organic layer and common luminescent layer sequentially stack.First, second luminescent layer is respectively arranged on common luminescent layer.Common luminescent layer and the first luminescent layer emit identical primitive color light, common electronic barrier layer or hole blocking layer of the luminescent layer as the second luminescent layer, there is the first energy barrier between the energy rank of the highest occupied molecular orbital of common luminescent layer and the first luminescent layer, there is the second energy barrier between common luminescent layer and the minimum energy rank for not accounting for molecular orbital of the first luminescent layer.Second organic layer is set on the first luminescent layer and the second luminescent layer.Second electrode is set on the second organic layer.Because organic LED display device is not required to additionally make electronic barrier layer and hole blocking layer, thus is simplified processing procedure.
Description
Technical field
The utility model relates to a kind of organic LED display device.
Background technique
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) is to be organised using luminiferous
The light-emitting component of object is closed, there is spontaneous light characteristic, and its slimming, display quality and electricity-saving characteristic are all better than liquid crystal display
(Liquid Crystal Display, LCD).Since Organic Light Emitting Diode has the spies such as wide viewing angle, high reaction speed, ultra-thin
Property, so that organic LED panel application range is more and more extensive.
Organic Light Emitting Diode is to combine to shine in luminescent layer by electron hole.As Organic Light Emitting Diode is ground
The progress studied carefully, it is thus proposed that respectively add one layer of barrier layer in luminescent layer two sides, it is desirable to electron hole can be confined to luminescent layer,
Increase the chance that electron hole combines in luminescent layer, the method can effectively increase the luminous efficiency of element really, only
Such structure will lead to mostly two stacking structures, and the problem of the expense of increase material and board.
Utility model content
The one technology aspect of the utility model is to provide a kind of organic LED display device, to promote its hair
Light efficiency simultaneously simplifies processing procedure.
According to one embodiment of the utility model, a kind of organic LED display device include substrate, first electrode,
First organic layer, common luminescent layer, the first luminescent layer, the second luminescent layer, the second organic layer and second electrode.First electrode is set
It is placed on substrate.First organic layer is set in first electrode.Common luminescent layer is set on the first organic layer.First luminescent layer
It is respectively arranged on common luminescent layer with the second luminescent layer, wherein common luminescent layer and the first luminescent layer emit identical primary colors
Light, the first luminescent layer emit different primitive color lights, electronic blocking of the common luminescent layer as the second luminescent layer from the second luminescent layer
Layer or hole blocking layer, highest occupied molecular orbital (the Highest Occupied Molecular of common luminescent layer
Orbital, HOMO) energy rank and the first luminescent layer highest occupied molecular orbital energy rank between have the first energy barrier, jointly
The minimum energy rank for not accounting for molecular orbital (Lowest Unoccupied Molecular Orbital, LUMO) of luminescent layer and the
There is the second energy barrier between the minimum energy rank for not accounting for molecular orbital of one luminescent layer.Second organic layer be set to the first luminescent layer with
On second luminescent layer.Second electrode is set on the second organic layer.
In one or more embodiments of the utility model, the absolute value of the first energy barrier is greater than or equal to 0.3eV.
In one or more embodiments of the utility model, the absolute value of the second energy barrier is greater than or equal to 0.3eV.
In one or more embodiments of the utility model, the minimum energy rank for not accounting for molecular orbital of common luminescent layer with
Energy rank absolute value of the difference between the minimum energy rank for not accounting for molecular orbital of first organic layer is greater than or equal to 0.3eV.
In one or more embodiments of the utility model, the energy rank of the highest occupied molecular orbital of the first luminescent layer with
Energy rank absolute value of the difference between the energy rank of the highest occupied molecular orbital of second organic layer is greater than or equal to 0.3eV.
In one or more embodiments of the utility model, the minimum energy rank for not accounting for molecular orbital of common luminescent layer with
Energy rank absolute value of the difference between the minimum energy rank for not accounting for molecular orbital of second luminescent layer is greater than or equal to 0.3eV.
In one or more embodiments of the utility model, the energy rank of the highest occupied molecular orbital of the second luminescent layer with
Energy rank absolute value of the difference between the energy rank of the highest occupied molecular orbital of second organic layer is greater than or equal to 0.3eV.
In one or more embodiments of the utility model, common luminescent layer and the first luminescent layer are blue light-emitting layer,
Second luminescent layer is red light emitting layer or green light emitting layer.
In one or more embodiments of the utility model, the doped luminescent material of common luminescent layer and the first luminescent layer
It is identical.
In one or more embodiments of the utility model, electron transfer layer of the common luminescent layer as the second luminescent layer
Or hole transmission layer.
The utility model above embodiment is by making the energy rank and first of the highest occupied molecular orbital of common luminescent layer
Energy scale between the energy rank of the highest occupied molecular orbital of luminescent layer is enough big and forms the first energy barrier, then from first electrode with
The transmission of first organic layer and the hole for entering common luminescent layer will be because of can not be barred from common hair by the first energy barrier
Between photosphere and the interface of the first luminescent layer；By making the minimum energy rank for not accounting for molecular orbital of common luminescent layer shine with first
Energy scale between the minimum energy rank for not accounting for molecular orbital of layer is enough big and forms the second energy barrier, then from second electrode, second
Organic layer transmission and the electronics for entering the first luminescent layer will be because of can not be barred from common luminescent layer by the second energy barrier
Between the interface of the first luminescent layer.Then, electronics and hole will in common luminescent layer in conjunction with the interface of the first luminescent layer,
The luminous efficiency for thus promoting organic LED display device, simultaneously as being not required to additionally make electronic barrier layer and hole
Barrier layer, thus it is simplified processing procedure.
Detailed description of the invention
Fig. 1 is painted the diagrammatic cross-section of the organic LED display device according to one embodiment of the utility model；
Fig. 2 is painted the energy rank schematic diagram of the organic LED display device of Fig. 1；
Fig. 3 is painted the another of the organic LED display device of Fig. 1 can rank schematic diagram.
Specific embodiment
Multiple embodiments that the utility model will be disclosed with attached drawing below, as clearly stated, in many practices
Details will be explained in the following description.It should be appreciated, however, that the details in these practices does not apply this with limitation practical new
Type.That is, the details in these practices is non-essential in the utility model some embodiments.In addition, to simplify
For the sake of attached drawing, some known usual structures will be painted in a manner of simply illustrating in the accompanying drawings with element.
Fig. 1 is painted the section signal according to the organic LED display device 100 of one embodiment of the utility model
Figure.The utility model different embodiments provide a kind of organic LED display device 100.Specifically, organic light emission
Diode display 100 can fill for traditional type organic LED display device, inversion type organic light-emitting diode display
It sets, penetration organic LED display device, upper luminescent type organic LED display device, the organic hair of lower light emitting-type
Optical diode display device, series type organic LED display device or flexible musical form organic light-emitting diode display dress
It sets.
Show as depicted in FIG. 1, a kind of organic LED display device 100 includes substrate 110, first electrode 120, first
Organic layer 130, common luminescent layer 140, the first luminescent layer 150, the second luminescent layer 160, the second organic layer 170 and second electrode
180.First electrode 120 is set on substrate 110.First organic layer 130 is set in first electrode 120.Common luminescent layer 140
It is set on the first organic layer 130.First luminescent layer 150 and the second luminescent layer 160 are respectively arranged on common luminescent layer 140,
Wherein common luminescent layer 140 and the first luminescent layer 150 emit identical primitive color light, the first luminescent layer 150 and the second luminescent layer 160
Emit different primitive color lights.Second organic layer 170 is set on the first luminescent layer 150 and the second luminescent layer 160.Second electrode
180 are set on the second organic layer 170.Specifically, first electrode 120 may include multiple electrodes branch 120b, respectively correspond
In the first luminescent layer 150 and the second luminescent layer 160.
Fig. 2 is painted the energy rank schematic diagram of the organic LED display device 100 of Fig. 1.As illustrated in Figure 2, common hair
The energy rank 141 of the highest occupied molecular orbital (Highest Occupied Molecular Orbital, HOMO) of photosphere 140 with
There is the first energy barrier B1, common luminescent layer 140 is most between the energy rank 151 of the highest occupied molecular orbital of first luminescent layer 150
The low energy rank 142 for not accounting for molecular orbital (Lowest Unoccupied Molecular Orbital, LUMO) and the first luminescent layer
There is the second energy barrier B2 between the 150 minimum energy rank 152 for not accounting for molecular orbital.
It is accounted for by the energy rank 141 and the highest of the first luminescent layer 150 that make the highest occupied molecular orbital of common luminescent layer 140
The first energy barrier B1 is formed greatly according to the energy scale between the energy rank 151 of molecular orbital is enough, is then had from first electrode 120 with first
The transmission of machine layer 130 and the hole for entering common luminescent layer 140 will be because of can not be barred from jointly by the first energy barrier B1
Between luminescent layer 140 and the interface of the first luminescent layer 150；By the minimum energy for not accounting for molecular orbital for making common luminescent layer 140
Energy scale between rank 142 and the minimum energy rank 152 for not accounting for molecular orbital of the first luminescent layer 150 is enough big and forms the second energy barrier
B2, then from second electrode 180, the transmission of the second organic layer 170 and the electronics for entering the first luminescent layer 150 will be because of can not lead to
It crosses the second energy barrier B2 and is barred between common luminescent layer 140 and the interface of the first luminescent layer 150.Then, electronics and hole
Will be in common luminescent layer 140 in conjunction with the interface of the first luminescent layer 150, thus promote organic LED display device
100 luminous efficiency simultaneously as being not required to additionally make electronic barrier layer and hole blocking layer, thus is simplified processing procedure.
Specifically, the absolute value of the first energy barrier B1 is greater than or equal to about 0.3eV, the absolute value of the second energy barrier B2 be greater than or
Equal to about 0.3eV.It will be understood that the specific embodiment of the first energy barrier B1 and the second energy barrier B2 provided above are only to illustrate,
Not to limit the utility model, the utility model those of ordinary skill in the art should regard actual needs, bullet
Property selection the first energy barrier B1 and the second energy barrier B2 specific embodiment.
Furthermore, it is understood that because organic LED display device 100 includes that the common of transmitting same primary color light shines
Layer 140 and first luminescent layer 150, due to the relationship of this multilayered structure, so electron hole in conjunction with and return to after forming exciton
The light emission range of ground state becomes larger, therefore avoidable exciton is resulted to the feelings lost between luminescent layer and transport layer
Condition is then able to improving luminous efficiency.
Show as depicted in FIG. 1, common luminescent layer 140 and the first luminescent layer 150 can be blue light-emitting layer, the second luminescent layer 160
It can be red light emitting layer or green light emitting layer.More specifically, the second luminescent layer 160a can be red light emitting layer, the second luminescent layer
160b can be green light emitting layer.
As illustrated in Figure 2, when common luminescent layer 140 and the first luminescent layer 150 are blue light-emitting layer, due to shining jointly
There is the first energy barrier B1 and the second energy barrier B2, while common luminescent layer 140 and the first hair between layer 140 and the first luminescent layer 150
Photosphere 150 is a multilayered structure, therefore the blue light luminous efficiency of organic LED display device 100 will be mentioned effectively
It rises, thus makes up deficiency of the present industry in blue material exploitation.
Fig. 3 is painted the another of the organic LED display device 100 of Fig. 1 can rank schematic diagram.Show as depicted in fig. 3, altogether
It can be used as the electronic barrier layer and hole transmission layer of the second luminescent layer 160 with luminescent layer 140, or common luminescent layer 140 can be made
For the electron transfer layer and hole blocking layer of the second luminescent layer 160.
In the present embodiment, electronic barrier layer and hole transport of the common luminescent layer 140 as the second luminescent layer 160
Layer, and by accounting for the minimum energy rank 142 for not accounting for molecular orbital of common luminescent layer 140 not with the minimum of the second luminescent layer 160
Electronic barrier layer may be implemented greater than or equal to about 0.3eV in the absolute value of energy scale D1 between the energy rank 162 of molecular orbital
Function (forms energy barrier between energy rank 142,162).
Specifically, hole will be transmitted from first electrode 120 and by the first organic layer 130 and common luminescent layer 140 into
And enter the second luminescent layer 160, and the electricity of the second luminescent layer 160 is transmitted and entered from second electrode 180, the second organic layer 170
Son will be because of that can not be barred from the second luminescent layer 160 by common luminescent layer 140, and then electronics and hole will be the
Two luminescent layers 160 in conjunction with and shine.Because common luminescent layer 140 is used as electronic barrier layer and hole transmission layer, will be not required to
Additional production electronic barrier layer and hole transmission layer, thus it is simplified processing procedure.
As illustrated in Figure 2, the first organic layer 130 can be used as the electronic barrier layer or hole blocking layer of common luminescent layer 140.
In the present embodiment, electronic barrier layer of first organic layer 130 as common luminescent layer 140, and this can be common by making
The minimum energy rank 142 for not accounting for molecular orbital of luminescent layer 140 and the minimum energy rank for not accounting for molecular orbital of the first organic layer 130
The absolute value of energy scale D2 between 132 realized greater than or equal to about 0.3eV (formed energy barrier in can rank 132,142 it
Between).
Then, it is transmitted from second electrode 180 and common hair is entered by the second organic layer 170, the first luminescent layer 150
The electronics of photosphere 140 will be because of can not be barred from common luminescent layer 140, electronics and hole by the first organic layer 130
It will be combined in common luminescent layer 140, and then improving luminous efficiency.
Specifically, the second organic layer 170 can be used as the electronic barrier layer or hole blocking layer of the first luminescent layer 150.?
In present embodiment, hole blocking layer of second organic layer 170 as the first luminescent layer 150, and this can be by making the first hair
The energy rank 171 of the highest occupied molecular orbital of the energy rank 151 of the highest occupied molecular orbital of photosphere 150 and the second organic layer 170
Between the absolute value of energy scale D3 (formed energy barrier in can be between rank 151,171) be realized greater than or equal to about 0.3eV.
Then, it is transmitted from first electrode 120 and the first hair is entered by the first organic layer 130, common luminescent layer 140
The hole of photosphere 150 will be because of can not be barred from the first luminescent layer 150, electronics and hole by the second organic layer 170
It will be combined in the first luminescent layer 150, and then improving luminous efficiency.
Specifically, common luminescent layer 140 is identical as the doped luminescent material of the first luminescent layer 150.Then, no matter electronics
Hole in conjunction with and form the position of exciton in common luminescent layer 140 or the first luminescent layer 150, common luminescent layer 140 or the first hair
The problem of photosphere 150 can all emit the light of same color, and also there will be no colo(u)r bias.
Show as depicted in fig. 3, the second organic layer 170 can be used as the electronic barrier layer or hole blocking layer of the second luminescent layer 160.
In the present embodiment, hole blocking layer of second organic layer 170 as the second luminescent layer 160, and this can be by making second
The energy rank of the highest occupied molecular orbital of the energy rank 161 of the highest occupied molecular orbital of luminescent layer 160 and the second organic layer 170
The absolute value of energy scale D4 between 171 realized greater than or equal to about 0.3eV (formed energy barrier in can rank 161,171 it
Between).Then, it is transmitted from first electrode 120 and the second luminescent layer is entered by the first organic layer 130, common luminescent layer 140
160 hole will be because of that can not be barred from the second luminescent layer 160 by the second organic layer 170, then electronics and hole
Will the second luminescent layer 160 in conjunction with and shine, and be able to effective improving luminous efficiency.
Specifically, substrate 110 can be used as upper substrate or lower substrate, first electrode 120 can be used as top electrode or lower electrode,
Second electrode 180 can be used as top electrode or lower electrode.More specifically, under the conduct of second electrode 180 when electrode, second electrode
180 may include multiple electrodes branch, correspond respectively to the first luminescent layer 150 and the second luminescent layer 160.It will be understood that the above institute
The specific embodiment of the substrate 110 of act, first electrode 120 and second electrode 180 is only to illustrate, not practical to limit
Novel, the utility model those of ordinary skill in the art should regard actual needs, elasticity selection substrate 110, first
The specific embodiment of electrode 120 and second electrode 180.
In the present embodiment, the energy rank 121 of the highest occupied molecular orbital of first electrode 120 can be greater than the first organic layer
The energy rank 131 of 130 highest occupied molecular orbital.The energy rank 131 of the highest occupied molecular orbital of first organic layer 130 can be greater than
The energy rank 141 of the highest occupied molecular orbital of common luminescent layer 140.The energy of the highest occupied molecular orbital of common luminescent layer 140
Rank 141 can be greater than the energy rank 151 of the highest occupied molecular orbital of the first luminescent layer 150.The highest of first luminescent layer 150 occupies point
The energy rank 151 of sub- orbital can be greater than the energy rank 171 of the highest occupied molecular orbital of the second organic layer 170.First organic layer 130
The minimum energy rank 132 for not accounting for molecular orbital can be greater than the minimum energy rank 142 for not accounting for molecular orbital of common luminescent layer 140.Jointly
The minimum energy rank 142 for not accounting for molecular orbital of luminescent layer 140 can be greater than the minimum energy for not accounting for molecular orbital of the first luminescent layer 150
Rank 152.The minimum energy rank 152 for not accounting for molecular orbital of first luminescent layer 150 can be greater than the minimum of the second organic layer 170 and not account for point
The energy rank 172 of sub- orbital.The minimum energy rank 172 for not accounting for molecular orbital of second organic layer 170 can be greater than second electrode 180 most
The low energy rank 182 for not accounting for molecular orbital.The energy rank 141 of the highest occupied molecular orbital of common luminescent layer 140 can be greater than the second hair
The energy rank 161 of the highest occupied molecular orbital of photosphere 160.The energy rank 161 of the highest occupied molecular orbital of second luminescent layer 160 can
Greater than the energy rank 171 of the highest occupied molecular orbital of the second organic layer 170.Common the minimum of luminescent layer 140 does not account for molecular orbital
Energy rank 142 can be greater than the second luminescent layer 160 the minimum energy rank 162 for not accounting for molecular orbital.Second luminescent layer 160 it is minimum not
The energy rank 162 for accounting for molecular orbital can be greater than the minimum energy rank 172 for not accounting for molecular orbital of the second organic layer 170.
The utility model above embodiment is by making the energy rank 141 of the highest occupied molecular orbital of common luminescent layer 140
Energy scale between the energy rank 151 of the highest occupied molecular orbital of the first luminescent layer 150 is enough big and forms the first energy barrier B1, in
Be enter the hole of common luminescent layer 140 from first electrode 120 and the transmission of the first organic layer 130 will be because of can not be by the
One energy barrier B1 and be barred between common luminescent layer 140 and the interface of the first luminescent layer 150；By making common luminescent layer 140
The minimum energy rank 142 for not accounting for molecular orbital and the first luminescent layer 150 the minimum energy rank 152 for not accounting for molecular orbital between energy
Scale is enough big and forms the second energy barrier B2, then transmit from second electrode 180, the second organic layer 170 and enters the first luminescent layer
150 electronics will be because of Jie that can not be barred from common luminescent layer 140 and the first luminescent layer 150 by the second energy barrier B2
Between face.Then, electronics will be in common luminescent layer 140 in conjunction with the interface of the first luminescent layer 150 with hole, thus promotion has
The luminous efficiency of machine light emitting display device 100, simultaneously as be not required to additionally make electronic barrier layer and hole blocking layer,
Thus it is simplified processing procedure.
Although the utility model is disclosed above with embodiment, so it is not intended to limit the utility model, any ripe
This those skilled in the art is known, without departing from the spirit and scope of the utility model, when can be used for a variety of modifications and variations, therefore this is practical
Novel protection scope is subject to the view scope of which is defined in the appended claims.
Claims (10)
1. a kind of organic LED display device, characterized by comprising:
One substrate；
One first electrode is set on the substrate；
One first organic layer, is set in the first electrode；
One common luminescent layer is set on first organic layer；
One first luminescent layer and one second luminescent layer, are respectively arranged on the common luminescent layer, wherein the common luminescent layer with should
First luminescent layer emits identical primitive color light, which emits different primitive color lights from second luminescent layer, this is common
Electronic barrier layer or hole blocking layer of the luminescent layer as second luminescent layer, the highest occupied molecular orbital of the common luminescent layer
Energy rank and first luminescent layer highest occupied molecular orbital energy rank between have one first energy barrier, the common luminescent layer
There is one second energy between the minimum energy rank for not accounting for molecular orbital and the minimum energy rank for not accounting for molecular orbital of first luminescent layer
Barrier；
One second organic layer is set on first luminescent layer and second luminescent layer；And
One second electrode is set on second organic layer.
2. organic LED display device according to claim 1, which is characterized in that the absolute value of first energy barrier
More than or equal to 0.3eV.
3. organic LED display device according to claim 1, which is characterized in that the absolute value of second energy barrier
More than or equal to 0.3eV.
4. organic LED display device according to claim 1, which is characterized in that the common luminescent layer it is minimum
The energy rank absolute value of the difference that the energy rank of molecular orbital is not accounted between energy rank that the minimum of first organic layer does not account for molecular orbital
More than or equal to 0.3eV.
5. organic LED display device according to claim 1, which is characterized in that the highest of first luminescent layer
Occupy the energy rank absolute value of the difference between the energy rank of molecular orbital and the energy rank of the highest occupied molecular orbital of second organic layer
More than or equal to 0.3eV.
6. organic LED display device according to claim 1, which is characterized in that the common luminescent layer it is minimum
The energy rank absolute value of the difference that the energy rank of molecular orbital is not accounted between energy rank that the minimum of second luminescent layer does not account for molecular orbital
More than or equal to 0.3eV.
7. organic LED display device according to claim 1, which is characterized in that the highest of second luminescent layer
Occupy the energy rank absolute value of the difference between the energy rank of molecular orbital and the energy rank of the highest occupied molecular orbital of second organic layer
More than or equal to 0.3eV.
8. organic LED display device according to claim 1, which is characterized in that the common luminescent layer and this
One luminescent layer is blue light-emitting layer, which is red light emitting layer or green light emitting layer.
9. organic LED display device according to claim 8, which is characterized in that the common luminescent layer and this
The doped luminescent material of one luminescent layer is identical.
10. organic LED display device according to claim 1, which is characterized in that the common luminescent layer conduct
The electron transfer layer or hole transmission layer of second luminescent layer.
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| CN201821715302.7U CN208955023U (en) | 2018-10-23 | 2018-10-23 | Organic LED display device |
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| CN201821715302.7U CN208955023U (en) | 2018-10-23 | 2018-10-23 | Organic LED display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111092163A (en) * | 2018-10-23 | 2020-05-01 | 宸鸿光电科技股份有限公司 | Organic light emitting diode display device |
| WO2022007142A1 (en) * | 2020-07-06 | 2022-01-13 | 武汉华星光电半导体显示技术有限公司 | Organic light emitting diode device and display panel |
| US11972733B2 (en) | 2020-12-15 | 2024-04-30 | Yungu (Gu'an) Technology Co., Ltd. | Light-emitting device and display panel |
-
2018
- 2018-10-23 CN CN201821715302.7U patent/CN208955023U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111092163A (en) * | 2018-10-23 | 2020-05-01 | 宸鸿光电科技股份有限公司 | Organic light emitting diode display device |
| CN111092163B (en) * | 2018-10-23 | 2022-12-20 | 宸鸿光电科技股份有限公司 | Organic light emitting diode display device |
| WO2022007142A1 (en) * | 2020-07-06 | 2022-01-13 | 武汉华星光电半导体显示技术有限公司 | Organic light emitting diode device and display panel |
| US11910704B2 (en) | 2020-07-06 | 2024-02-20 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Organic light emitting diode device and display panel |
| US11972733B2 (en) | 2020-12-15 | 2024-04-30 | Yungu (Gu'an) Technology Co., Ltd. | Light-emitting device and display panel |
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