CN102185110A - Organic light emitting diode device - Google Patents
Organic light emitting diode device Download PDFInfo
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- CN102185110A CN102185110A CN2011101000749A CN201110100074A CN102185110A CN 102185110 A CN102185110 A CN 102185110A CN 2011101000749 A CN2011101000749 A CN 2011101000749A CN 201110100074 A CN201110100074 A CN 201110100074A CN 102185110 A CN102185110 A CN 102185110A
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Abstract
The invention relates to an organic light emitting diode device which is characterized by comprising a substrate, a first electrode layer, a first insulating layer, at least one control electrode layer, a second insulating layer, at least one light emitting layer, a third insulating layer and a second electrode layer, wherein the first electrode layer is formed on the substrate and comprises a first region and a second region which is adjacent to the first region; the first insulating layer, the control electrode layer and the second insulating layer are sequentially formed on the first region; the light emitting layer is formed on the second region; and the second electrode layer is formed on the light emitting layer. The organic light emitting diode device provided by the invention controls an electron hole and an electron combination position by utilizing the control electrode layer, thereby achieving the purpose of adjusting the color temperature.
Description
Technical field
The present invention relates to a kind of light-emitting diode assembly, the particularly relevant a kind of oled device that can adjust colour temperature (color temperature).
Background technology
(Organic Light Emitting Diode, OLED) device can be used as the luminous source of display unit and lighting device to Organic Light Emitting Diode.This oled device comprises that mainly a substrate, an anode are arranged on this substrate, a luminescent layer is arranged on this anode and a negative electrode is arranged on this luminescent layer.
When a voltage is applied to this anode and this negative electrode, the electricity hole can be injected into this luminescent layer from anode, electronics can be injected into this luminescent layer from negative electrode, electricity hole and electronics can be at this luminescent layer compound (recombination), the compound energy that discharges can excite the carrier of this luminescent layer to produce light, therefore oled device can be called electroluminescence (electroluminescent, EL) device again.
Colour temperature refers to light under different energy, the change color that human eyes are experienced.Oled device only can be controlled its colour temperature by the carrier concentration of this luminescent layer, therefore after the carrier concentration of this luminescent layer is fixing, the colour temperature that this Organic Light Emitting Diode can show can't change again, makes the application of this Organic Light Emitting Diode be restricted.
Therefore need the problem that above-mentioned oled device can not be adjusted colour temperature be proposed a solution.
Summary of the invention
In view of the deficiencies in the prior art, the object of the present invention is to provide a kind of light-emitting diode assembly that can adjust colour temperature.
To achieve these goals, technical scheme of the present invention is: a kind of oled device, it is characterized in that, and comprise a substrate; One first electrode layer is formed on this substrate, and this first electrode layer comprises a first area and in abutting connection with a second area of this first area and wherein one of a plurality of first carriers and a plurality of second carriers are provided; One first insulating barrier is formed on this first area; At least one control electrode layer is formed on this first insulating barrier; One second insulating barrier is formed on this control electrode layer; At least one luminescent layer is formed on this second area, is used for luminous; One the 3rd insulating barrier is formed between this control electrode layer and this luminescent layer; An and the second electrode lay, be formed on this luminescent layer and another persons of these first carriers and these second carriers is provided, wherein this control electrode layer is that these first carriers of control and the recombination site of these second carriers in this luminescent layer are to control the luminous of this luminescent layer.
Further, these first carriers are the one of electric hole and electronics, another person that these second carriers are electric hole and electronics.
Further, this oled device comprises that also one first carrier implanted layer is formed between this first electrode layer and this luminescent layer, provides the efficient of these first carriers in order to increase this first electrode layer.
Further, this oled device comprises that also one first carrier transport layer is formed between this first electrode layer and this luminescent layer, in order to improve these first carrier mobilities.
Further, this oled device comprises that also one second carrier transport layer is formed between this luminescent layer and this second electrode lay, in order to improve these second carrier mobilities.
Further, this oled device comprises that also one second carrier implanted layer is formed between this luminescent layer and this second electrode lay, provides the efficient of these second carriers in order to increase this second electrode lay.
Further, this at least one luminescent layer comprises a blue light-emitting layer, a green light emitting layer and a red light emitting layer.
Further, the first of this first electrode layer and this second electrode lay is as anode, and another of this first electrode layer and this second electrode lay is as negative electrode.
Further, this oled device also comprises a plurality of control electrode layers and a plurality of luminescent layer, between the adjacent control electrode layer is to comprise that one separates insulating barrier.
Further, the first of these control electrode layers control these first carriers and these second carriers in the recombination site of the one of these luminescent layers to control the luminous of these luminescent layers.
Advantage of the present invention: oled device of the present invention is controlled electric hole and electron recombination position to reach the purpose of adjusting colour temperature by applying a voltage in the control electrode layer.
Description of drawings
Fig. 1 is the oled device that illustrates according to first embodiment of the invention.
Fig. 2 is the oled device that illustrates according to second embodiment of the invention.
Fig. 3 is the oled device that illustrates according to third embodiment of the invention.
Fig. 4 is the oled device that illustrates according to fourth embodiment of the invention.
Fig. 5 is the oled device that illustrates according to fifth embodiment of the invention.
[primary clustering symbol description]
100 substrates
102 first electrode layers
104 the second electrode lays
110 first insulating barriers
112 second insulating barriers
114 the 3rd insulating barriers
116,118 separate insulating barrier
120,122,124,126,128,150 control electrode layers
130 blue light-emitting layers
132 green light emitting layers
134 red light emitting layers
136 Yellow luminous layers
140 first carrier implanted layers
142 first carrier transport layers
144 second carrier transport layers
146 second carrier implanted layers
160 electric holes
162 electronics
1020 first areas
1022 second areas.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated.
Seeing also Fig. 1, is the oled device that illustrates according to first embodiment of the invention.This oled device comprises a substrate 100, one first electrode layer 102, one first insulating barrier 110, a control electrode layer 120, one second insulating barrier 112, at least one luminescent layer (with blue light-emitting layer 130, green light emitting layer 132, red light emitting layer 134 expressions), one the 3rd insulating barrier 114 and a second electrode lay 104.
This first electrode layer 102 is formed on this substrate 100.This first electrode layer 102 comprises a first area 1020 and a second area 1022, and it is in abutting connection with this first area 1020.This first insulating barrier 110 is formed on this first area 1020 to prevent this first electrode layer 102 and these control electrode layer 120 conductings.This control electrode layer 120 is formed on this first insulating barrier 110.This second insulating barrier 112 is formed on this control electrode layer 120 to prevent this control electrode layer 120 and these the second electrode lay 104 conductings.This blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134 from bottom to top are formed on this second area 1022 in regular turn.The 3rd insulating barrier 114 is formed between this control electrode layer 120 and blue light-emitting layer 130, this green light emitting layer 132, the red light emitting layer 134, because this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134 are semi-conducting material, thus the 3rd insulating barrier 114 as the insulation between conductor (this control electrode layer 120) and the semiconductor (this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134) to prevent conducting.This second electrode lay 104 is formed on this red light emitting layer 134.Be noted that, present embodiment comprises this blue light-emitting layer 130, this green light emitting layer 132, red light emitting layer 134, can include only the one of this blue light-emitting layer 130, this green light emitting layer 132, red light emitting layer 134 and only show a kind of color in other embodiment.
In present embodiment, this first electrode layer 102 and this second electrode lay 104 are respectively as anode and negative electrode, and in another embodiment, this first electrode layer 102 and this second electrode lay 104 are respectively as negative electrode and anode.When applying a voltage (not icon) in this first electrode layer 102 and this second electrode lay 104, this first electrode layer 102 provides a plurality of electric holes 160, and this second electrode lay 104 provides a plurality of electronics 162.These electric holes 160 and these electronics 162 are compound and make this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134 produce the light of different colours in this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134.Characteristics of the present invention are to increase this control electrode layer 120, when this this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134 are luminous, can apply a voltage and control these electric holes 160 and these electronics 162 in the compound position of this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134 in this control electrode layer 120.For instance, when the absolute value of voltage that is applied to this control electrode layer 120 is big more, most electric hole 160 and electronics 162 meetings are compound the closer to the position of the 3rd insulating barrier 114, and are compound away from the then few more electric hole 160, position and the electronics 162 of the 3rd insulating barrier 114 more.
In addition, when this control electrode layer 120 applies positive voltage, (mobility) is faster than electronics mobility for hol mobility, therefore electric hole 160 and electronics 162 compound positions concentrate on this green light emitting layer 132 or this red light emitting layer 134, when the positive voltage that is applied to this control electrode layer 120 is big more, electricity hole 160 and electronics 162 compound positions concentrate on this red light emitting layer 134 more, as shown in FIG., thus the light that mixes of this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134 can present warmer colour temperature.On the contrary, when this control electrode layer 120 applies negative voltage, the electronics mobility is faster than hol mobility, therefore electric hole 160 and electronics 162 compound positions concentrate on this blue light-emitting layer 130 or this green light emitting layer 132, when the negative voltage that is applied to this control electrode layer 120 was big more, electric hole 160 and electronics 162 compound positions concentrated on this blue light-emitting layer 130 more.In summary, the absolute value of voltage size that is applied to this control electrode layer 120 by control can be controlled the colour temperature of this Organic Light Emitting Diode, the colour temperature control during for example as illumination.
Seeing also Fig. 2, is the oled device that illustrates according to second embodiment of the invention.Present embodiment and Fig. 1 embodiment different are that present embodiment comprises that further one first carrier implanted layer 140 and one first carrier transport layer 142 are formed between this first electrode layer 102 and this blue light-emitting layer 130 (that is three layers luminescent layer near first electrode layer) in regular turn, and one second carrier transport layer 144 and one second carrier implanted layer 146 are formed between this red light emitting layer 134 (that is three layers luminescent layer near the second electrode lay) and this second electrode lay 104 in regular turn.When this first electrode layer 102 as anode and this second electrode lay 104 when being negative electrode, this first carrier implanted layer 140 and this first carrier transport layer 142 are respectively electric hole implanted layer and electric hole transport layer, and this second carrier transport layer 144 and this second carrier implanted layer 146 are respectively electron transfer layer and electron injecting layer.When this first electrode layer 102 as negative electrode and this second electrode lay 104 when being anode, this first carrier implanted layer 140 and this first carrier transport layer 142 are respectively electron injecting layer and electron transfer layer, and this second carrier transport layer 144 and this second carrier implanted layer 146 are respectively electric hole transport layer and electric hole implanted layer.
Be noted that this first carrier implanted layer 140 and this second carrier implanted layer 146 are to increase this first electrode layer 102 respectively the efficient of these first carriers and the efficient that this second electrode lay 104 provides these second carriers are provided.This first carrier transport layer 142 and this second carrier transport layer 144 improve first carrier mobility and second carrier mobility respectively.This first carrier implanted layer 140, this first carrier transport layer 142, this second carrier transport layer 144 and this second carrier implanted layer 146 are optionally to form at least one, increasing by first carrier and second carrier compound probability in this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134, and then increase the luminous efficiency of this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134.
Seeing also Fig. 3, is the oled device that illustrates according to third embodiment of the invention.Present embodiment and Fig. 2 embodiment different are to comprise two luminescent layers by present embodiment, and promptly this blue light-emitting layer 130 and a Yellow luminous layer 136 are formed on the first carrier transport layer 142 of this second area 1022 in regular turn.Different with second embodiment, second embodiment blends white light with the coloured light that this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134 are sent, and in the present embodiment, owing to gold-tinted is to add that by green glow the ruddiness mixing gets, therefore can blend white light with this blue light-emitting layer 130 and this Yellow luminous layer 136 two-layer coloured light that is sent.
Seeing also Fig. 4, is the oled device that illustrates according to fourth embodiment of the invention.Present embodiment comprises a plurality of control electrode layers 122,124,126 with the different present embodiments that are of Fig. 2 embodiment.Be to comprise that respectively one separates insulating barrier 116 between the control electrode layer 122,124 and between the control electrode layer 124,126.These separate insulating barrier 116 is in order to prevent conducting between the control electrode layer 122,124,126.This blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134 are respectively by these control electrode layer 122,124,126 controls.Present embodiment can apply different voltages to these three control electrode layers 122,124,126 and come this blue light-emitting layer 130, this green light emitting layer 132, this red light emitting layer 134 are done different controls, can show more different-colours by this.
Seeing also Fig. 5, is the oled device that illustrates according to fifth embodiment of the invention.Present embodiment comprises a plurality of control electrode layers 128,150 with the different present embodiments that are of Fig. 3 embodiment.Be to comprise that one separates insulating barrier 118 between the control electrode layer 128,150.This blue light-emitting layer 130, this Yellow luminous layer 136 are respectively by these control electrode layer 128,150 controls.Present embodiment can apply different voltages to these two control electrode layers 128,150 and come this blue light-emitting layer 130, this Yellow luminous layer 136 are done different controls, can show more different-colours by this.
The luminescent layer color that is noted that above-mentioned first embodiment to the, five embodiment can comprise other selection and not be defined as blueness, green, redness or yellow, and color sequences can make up for other.
In the foregoing description, substrate 100 comprises flexible base plate or rigid substrates.The material of flexible base plate for example is polyethylene terephthalate (Polyethylene Terephthalate; PET) or pi (Polyimide).The material of rigid substrates for example is a glass.The material of first electrode layer 102 for example is gold, aluminium, copper, chromium, molybdenum, tantalum or indium tin oxide (Indium Tin Oxide; ITO).The material of first insulating barrier 110, second insulating barrier 112 and separation insulating barrier 116,118 for example is silica (SiOx), silicon nitride (SiNx) or alundum (Al (Al
2O
3).The material of control electrode layer 120,122,124,126,128,150 for example is aluminium or tantalum etc.The material of the second electrode lay 104 for example is gold, aluminium or indium tin oxide.The 3rd insulating barrier 114 is with chemical reaction (comprising electrochemistry) side surface of control electrode layer 120,122,124,126,128,150 to be formed oxide, forms alundum (Al (Al as aluminium
2O
3) or tantalum formation tantalum pentoxide (Ta
2O
5), the characteristic that has high compactness and high-k (High-k Dielectric) by this, and then can promote voltage range and the switch current ratio that is applied to control electrode layer 120,122,124,126,128,150, to reach the purpose of adjusting colour temperature more accurately.
Oled device of the present invention can utilize a control electrode to control at least one luminescent layer (as Fig. 1 to Fig. 3), or utilizes a plurality of control electrode layers to control a plurality of luminescent layers (as Fig. 4 to Fig. 5) respectively, reaches the purpose of adjusting colour temperature by this.
In sum; though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; the persond having ordinary knowledge in the technical field of the present invention; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is when being as the criterion with claims.
Claims (10)
1. an oled device is characterized in that, comprising:
One substrate;
One first electrode layer is formed on this substrate, and this first electrode layer comprises a first area and in abutting connection with a second area of this first area and wherein one of a plurality of first carriers and a plurality of second carriers are provided;
One first insulating barrier is formed on this first area;
At least one control electrode layer is formed on this first insulating barrier;
One second insulating barrier is formed on this control electrode layer;
At least one luminescent layer is formed on this second area, is used for luminous;
One the 3rd insulating barrier is formed between this control electrode layer and this luminescent layer; And
One the second electrode lay is formed on this luminescent layer and another persons of these first carriers and these second carriers is provided,
Wherein this control electrode layer is that control these first carriers and the recombination site of these second carriers in this luminescent layer are to control the luminous of this luminescent layer.
2. oled device according to claim 1 is characterized in that: these first carriers are the one of electric hole and electronics, another person that these second carriers are electric hole and electronics.
3. oled device according to claim 1 is characterized in that: comprise that further one first carrier implanted layer is formed between this first electrode layer and this luminescent layer, provides the efficient of these first carriers in order to increase this first electrode layer.
4. oled device according to claim 1 is characterized in that: comprise that further one first carrier transport layer is formed between this first electrode layer and this luminescent layer, in order to improve these first carrier mobilities.
5. oled device according to claim 1 is characterized in that: comprise that further one second carrier transport layer is formed between this luminescent layer and this second electrode lay, in order to improve these second carrier mobilities.
6. oled device according to claim 1 is characterized in that: comprise that further one second carrier implanted layer is formed between this luminescent layer and this second electrode lay, provides the efficient of these second carriers in order to increase this second electrode lay.
7. oled device according to claim 1 is characterized in that: this at least one luminescent layer comprises a blue light-emitting layer, a green light emitting layer and a red light emitting layer.
8. oled device according to claim 1 is characterized in that: the first of this first electrode layer and this second electrode lay is as anode, and another of this first electrode layer and this second electrode lay is as negative electrode.
9. oled device according to claim 1 is characterized in that: comprising a plurality of control electrode layers and a plurality of luminescent layer, is to comprise that one separates insulating barrier between the adjacent control electrode layer.
10. oled device according to claim 9 is characterized in that: the first of these control electrode layers control these first carriers and these second carriers in the recombination site of the one of these luminescent layers to control the luminous of these luminescent layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110100074 CN102185110B (en) | 2011-04-21 | 2011-04-21 | Organic light emitting diode device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110100074 CN102185110B (en) | 2011-04-21 | 2011-04-21 | Organic light emitting diode device |
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| Publication Number | Publication Date |
|---|---|
| CN102185110A true CN102185110A (en) | 2011-09-14 |
| CN102185110B CN102185110B (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110100074 Expired - Fee Related CN102185110B (en) | 2011-04-21 | 2011-04-21 | Organic light emitting diode device |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538553A (en) * | 2014-12-31 | 2015-04-22 | 北京维信诺科技有限公司 | Color-adjustable organic electroluminescent device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588665A (en) * | 2004-07-23 | 2005-03-02 | 上海大学 | Organic triode and its preparing method |
| US20090135105A1 (en) * | 2005-10-14 | 2009-05-28 | Pioneer Corporation | Light-emitting element and display apparatus using the same |
-
2011
- 2011-04-21 CN CN 201110100074 patent/CN102185110B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588665A (en) * | 2004-07-23 | 2005-03-02 | 上海大学 | Organic triode and its preparing method |
| US20090135105A1 (en) * | 2005-10-14 | 2009-05-28 | Pioneer Corporation | Light-emitting element and display apparatus using the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538553A (en) * | 2014-12-31 | 2015-04-22 | 北京维信诺科技有限公司 | Color-adjustable organic electroluminescent device |
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| Publication number | Publication date |
|---|---|
| CN102185110B (en) | 2012-10-31 |
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Granted publication date: 20121031 Termination date: 20190421 |