CN102201544A - Organic light-emitting device - Google Patents
Organic light-emitting device Download PDFInfo
- Publication number
- CN102201544A CN102201544A CN2011101257211A CN201110125721A CN102201544A CN 102201544 A CN102201544 A CN 102201544A CN 2011101257211 A CN2011101257211 A CN 2011101257211A CN 201110125721 A CN201110125721 A CN 201110125721A CN 102201544 A CN102201544 A CN 102201544A
- Authority
- CN
- China
- Prior art keywords
- luminescent device
- light
- organic luminescent
- anode
- organic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention provides an organic light-emitting device, which is characterized in that the device comprises a transparent substrate, an anode, an organic light-emitting layer, a cathode, and a light scattering film. The anode is on the transparent substrate; the organic light-emitting layer is on the anode; and the cathode is on the organic light-emitting layer. Besides, the light scattering film is under the transparent substrate and has a concavo-convex surface; the matrix of the light scattering film is blended with particles, and the refractive rate of the particle is different from that of the matrix. According to the invention, a glare phenomenon caused by excessively smooth surface of the light scattering film and specular reflection can be reduced, so that uncomfortable feeling caused by the glare can be eliminated.
Description
Technical field
The present invention relates to a kind of organic luminescent device, relate in particular to a kind of organic luminescent device that can reduce dazzle.
Background technology
The structure of organic luminescent device (Organic light-emitting device is abbreviated as OLED) is carried out work based on the electroluminescence principle.Its typical structure is that the luminous organic material of making one deck tens nanometer thickness on ito glass is made luminescent layer, and there is the metal electrode of one deck low work function the luminescent layer top.When being added with voltage on the electrode, luminescent layer just produces light radiation.(TFEL) is different with the inorganic thin-film electrofluorescence device, the electroluminescence of organic material belongs to pouring-in recombination luminescence, its luminescence mechanism is to be combined into exciton by hole and electronics that anode and negative electrode produce in luminescent material, the energy of exciton is transferred to light emitting molecule, make the electronics in the light emitting molecule be excited to excitation state, and excitation state is a unsure state, and the process of going to swash produces visible light.
The brightness of traditional organic luminescent device (OLED) display is lower, mainly is because the total reflection effect has taken place.This is because the refractive index difference of each structure of organic luminescent device (OLED) produces.The substrate refractive index of organic luminescent device (OLED) is less than organic luminous layer, and the refractive index of substrate when light gives out from organic luminous layer, is passed through anode and transparent substrates again less than air successively, and when entering into air, light emission rate reduces greatly.
In order to improve light emission rate, be to attach blooming with optical cement or optics paint at present, to increase the bright dipping of organic luminescent device (OLED) with light scattering in organic luminescent device (OLED) the substrate outside.With the light-diffusing films that adds scattering particles in the silica gel, can reduce the total reflection of the interior light of organic luminescent device (OLED) in the method, increase light emission rate.But, light-diffusing films have one level and smooth and the surface of direct reflection arranged.Thus, be radiated at this surperficial light from the external world and will cause dazzle because of reflection.In use, dazzle allows the people that sticky feeling is arranged.
In view of this, how designing a kind of novel organic luminescent device (OLED), to reduce dazzle too level and smooth because of the surface of light-diffusing films and that have the extraneous light of meeting reflection to cause, is the problem that those skilled in the art need solution badly.
Summary of the invention
The defective that dazzle is arranged at organic luminescent device in the prior art (OLED) exists the invention provides a kind of novel organic luminescent device.
The invention provides a kind of organic luminescent device, it is characterized in that, comprising: transparent substrates, anode, organic luminous layer, negative electrode and light-diffusing films.Wherein, anode is positioned on the transparent substrates; Organic luminous layer is positioned on the anode; Negative electrode is positioned on the organic luminous layer; And light-diffusing films is positioned at the below of transparent substrates, surperficial concave-convex surface, and be mixed with particulate in the matrix of light-diffusing films, the refractive index of particulate is different from the refractive index of matrix.
Preferably, anode is made by indium tin oxide.
Preferably, negative electrode is by at least a making in magnesium, aluminium, silver or the calcium.
Preferably, organic luminescent device further comprises hole transmission layer, between anode and organic luminous layer.
Preferably, organic luminescent device further comprises electron transfer layer, between negative electrode and organic luminous layer.
Preferably, organic luminescent device further comprises hole injection layer, between anode and hole transmission layer.
Preferably, the concavo-convex of light-diffusing films can be circular prominent shape, the prominent shape of triangle, the prominent shape of quadrangle, the prominent shape of hexagon, rectangular prominent shape, circular concavity, triangle concavity, tetragonal concavity, hexagon concavity, rectangular concavity or their combination.
Preferably, transparent substrates can be made by glass.
Adopt organic luminescent device of the present invention, can reduce the smoothness on light-diffusing films surface, make to be radiated at lip-deep light generation scattering, thereby reduce dazzle, avoid in use because the sticky feeling that dazzle causes.
Description of drawings
The reader will become apparent various aspects of the present invention after the reference accompanying drawing has been read the specific embodiment of the present invention.Wherein,
Fig. 1 shows the demonstration diagram of organic luminescent device generation dazzle in the prior art;
Fig. 2 shows according to organic luminescent device cross sectional representation of the present invention.
Embodiment
With reference to the accompanying drawings, the specific embodiment of the present invention is described in further detail.
Fig. 1 shows the demonstration diagram of organic luminescent device generation dazzle in the prior art.With reference to Fig. 1, organic luminescent device 10 comprises: transparent substrates 100, anode 110, organic luminous layer 120, negative electrode 130 and light-diffusing films 140.Wherein, anode 110 is positioned on the transparent substrates 100.Organic luminous layer 120 is between anode 110 and negative electrode 130.Light-diffusing films 140 is positioned at the below of transparent substrates 100.Under bias condition, with compound at organic luminous layer 120 places, cause organic luminous layer 120 luminous from the hole of anode 110 from the electronics of negative electrode 130.Because the refractive index of anode 110 is lower than transparent reduction by 100, so when anode 110 enters transparent substrates 100 total reflection can take place when light, this has just influenced the light emission rate of organic luminescent device 10 greatly.
And be mixed with dispersed particle 142 in the matrix 141 of light-diffusing films 140, and because dispersed particle 142 refractive indexes are different from matrix 141, the light that comes from transparent substrates 100 can be carried out scattering, so can reduce total reflection, increase the light emission rate of organic luminescent device 10.But, the surface smoothing of the light-diffusing films 140 and direct reflection effect is arranged, the superincumbent light of extraneous irradiation can reflect, and causes dazzle thus, makes the people uncomfortable in use.
Fig. 2 shows the cross sectional representation according to light-diffusing films in the organic luminescent device of the present invention.With reference to Fig. 2, organic luminescent device 20 comprises: transparent substrates 200, anode 210, hole injection layer 220, hole transmission layer 230, organic luminous layer 240, electron transfer layer 250, negative electrode 260 and light-diffusing films 270.Preferably, transparent substrates 200 is substrate of glass.Preferably, anode 210 is indium tin oxide layers.Preferably, negative electrode 250 is made by magnesium metal.Wherein, anode 210 is positioned on the transparent substrates 200, hole injection layer 220 is positioned on the anode 210, hole transmission layer 230 is positioned at hole injection layer 220, organic luminous layer 240 is positioned on the hole transmission layer 230, electron transfer layer 250 is positioned at organic luminous layer 240 tops, and negative electrode 260 is positioned on the electron transfer layer 250.Light-diffusing films 270 is positioned at the below of transparent substrates 200.
Under bias condition, the electronics that passes through electron transfer layers 250 from negative electrode 250 causes organic luminous layer 240 luminous with compound at organic luminous layer 240 places through the hole of hole injection layers 220, hole transmission layer 230 from anode 210.Because the refractive index difference of organic luminescent device 20 each structures, when light passed hole injection layer 220, hole transmission layer 230, anode 210 and transparent substrates 200 successively, total reflection took place, greatly reduce the light emission rate of organic luminescent device 20.
Continuation is with reference to Fig. 2, be attached in the matrix 271 of light-diffusing films 270 of transparent substrates 200 lower surfaces and be doped with particulate 272, the refractive index of particulate 272 is greater than or less than the refractive index of matrix 271, the light that comes from transparent substrates 200 can be carried out scattering like this, so can reduce total reflection, increase the light emission rate of organic luminescent device 20.The as can be seen from Figure 2 surperficial concave-convex surface of light-diffusing films 270, this is concavo-convex can be circular prominent shape, the prominent shape of triangle, the prominent shape of quadrangle, the prominent shape of hexagon, rectangular prominent shape, circular concavity, triangle concavity, tetragonal concavity, hexagon concavity, rectangular concavity or their combination.Light-diffusing films 270 with convex-concave surface can spread out the light from the external world, avoids causing dazzle.
Advantage of the present invention is: be doped with scattering particles in the matrix of organic light-emitting device light-diffusing films, can reduce the total reflection of organic luminescent device inside, increase light emission rate.And scattering film has a coarse surface, can come coming from extraneous light scattering, avoids taking place dazzle to eliminate the sticky feeling that causes because of dazzle.
Above, describe the specific embodiment of the present invention with reference to the accompanying drawings.But those skilled in the art can understand, and under situation without departing from the spirit and scope of the present invention, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replacement all drop in claims restricted portion of the present invention.
Claims (8)
1. an organic luminescent device is characterized in that, comprising:
Transparent substrates;
Anode is positioned on the described transparent substrates;
Organic luminous layer is positioned on the described anode;
Negative electrode is positioned on the described organic luminous layer; And
Light-diffusing films is positioned at the below of described transparent substrates, surperficial concave-convex surface, and be mixed with particulate in the matrix of described light-diffusing films, the refractive index of described particulate is different from the refractive index of described matrix.
2. organic luminescent device according to claim 1 is characterized in that described anode is made by indium tin oxide.
3. organic luminescent device according to claim 1 is characterized in that, described negative electrode is by at least a making in magnesium, aluminium, silver or the calcium.
4. organic luminescent device according to claim 1 is characterized in that, further comprises hole transmission layer, between described anode and described organic luminous layer.
5. organic luminescent device according to claim 1 is characterized in that, further comprises electron transfer layer, between described negative electrode and described organic luminous layer.
6. organic luminescent device according to claim 4 is characterized in that, further comprises hole injection layer, between described anode and described hole transmission layer.
7. organic luminescent device according to claim 1, it is characterized in that the concavo-convex of described light-diffusing films can be circular prominent shape, the prominent shape of triangle, the prominent shape of quadrangle, the prominent shape of hexagon, rectangular prominent shape, circular concavity, triangle concavity, tetragonal concavity, hexagon concavity, rectangular concavity or their combination.
8. organic luminescent device according to claim 1 is characterized in that described transparent substrates can be made by glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101257211A CN102201544A (en) | 2011-05-12 | 2011-05-12 | Organic light-emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101257211A CN102201544A (en) | 2011-05-12 | 2011-05-12 | Organic light-emitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102201544A true CN102201544A (en) | 2011-09-28 |
Family
ID=44662056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101257211A Pending CN102201544A (en) | 2011-05-12 | 2011-05-12 | Organic light-emitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102201544A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367623A (en) * | 2013-07-18 | 2013-10-23 | 深圳市华星光电技术有限公司 | Light-emitting device and manufacturing method thereof |
| CN104205403A (en) * | 2012-03-23 | 2014-12-10 | 株式会社Lg化学 | Organic light-emitting element |
| US9083004B2 (en) | 2013-07-18 | 2015-07-14 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Light-emitting device and manufacturing method thereof |
| WO2021088203A1 (en) * | 2019-11-06 | 2021-05-14 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method therefor, and display device |
-
2011
- 2011-05-12 CN CN2011101257211A patent/CN102201544A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104205403A (en) * | 2012-03-23 | 2014-12-10 | 株式会社Lg化学 | Organic light-emitting element |
| US9368755B2 (en) | 2012-03-23 | 2016-06-14 | Lg Display Co., Ltd. | Organic light emitting device |
| CN104205403B (en) * | 2012-03-23 | 2016-11-16 | 乐金显示有限公司 | Organic luminescent device and luminaire |
| CN103367623A (en) * | 2013-07-18 | 2013-10-23 | 深圳市华星光电技术有限公司 | Light-emitting device and manufacturing method thereof |
| WO2015006986A1 (en) * | 2013-07-18 | 2015-01-22 | 深圳市华星光电技术有限公司 | Light-emitting device and manufacturing method therefor |
| US9083004B2 (en) | 2013-07-18 | 2015-07-14 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Light-emitting device and manufacturing method thereof |
| CN103367623B (en) * | 2013-07-18 | 2015-10-28 | 深圳市华星光电技术有限公司 | Luminescent device and preparation method thereof |
| WO2021088203A1 (en) * | 2019-11-06 | 2021-05-14 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method therefor, and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103050639B (en) | organic electroluminescent element | |
| US7067974B2 (en) | Light-emitting apparatus and method for forming the same | |
| KR101530748B1 (en) | Highly efficient organic light emitting device and method for manufacturing the same | |
| US8125145B2 (en) | OLEDs with increased light yield | |
| JPWO2009060916A1 (en) | Translucent substrate, manufacturing method thereof, organic LED element and manufacturing method thereof | |
| TW200427366A (en) | Light-emitting apparatus and method for forming the same | |
| TWI463717B (en) | Oled lighting element and manufacture method and lighting device utilizing thereof | |
| CN105118848B (en) | A kind of organic light emitting display | |
| CN105810840B (en) | A kind of organic electroluminescence device | |
| CN1573468A (en) | Planar luminescent illumination device including auxiliary electrode | |
| CN106024835A (en) | Transparent display panel and preparation method thereof | |
| US9793516B2 (en) | Light extraction substrate for organic light-emitting element, method for manufacturing same and organic light-emitting element including same | |
| CN102201544A (en) | Organic light-emitting device | |
| Zhou et al. | Ideal microlens array based on polystyrene microspheres for light extraction in organic light-emitting diodes | |
| CN101867020A (en) | Luminous element | |
| CN110620188A (en) | Display panel and display device | |
| US20170084872A1 (en) | Oled light emitting device and display device | |
| CN102201545A (en) | Organic light-emitting device | |
| JP2004020746A (en) | Substrate for light emitting device and light emitting device using same | |
| CN106716663A (en) | Flexible substrate and method of manufacturing same | |
| US20180331323A1 (en) | Top-emitting oled and a manufacturing method thereof | |
| CN106663745B (en) | Manufacture is for the method for the light extraction substrate of Organic Light Emitting Diode, the light extraction substrate for Organic Light Emitting Diode and includes its Organic Light Emitting Diode | |
| CN102290532A (en) | Organic electroluminescent element with high light extraction rate and optimization method thereof | |
| US9887389B2 (en) | Organic light emitting device | |
| KR20140132589A (en) | Light extraction substrate for oled, method of fabricating thereof and oled including the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110928 |