CN201213321Y - Organic electroluminescent light source - Google Patents
Organic electroluminescent light source Download PDFInfo
- Publication number
- CN201213321Y CN201213321Y CNU2008201089309U CN200820108930U CN201213321Y CN 201213321 Y CN201213321 Y CN 201213321Y CN U2008201089309 U CNU2008201089309 U CN U2008201089309U CN 200820108930 U CN200820108930 U CN 200820108930U CN 201213321 Y CN201213321 Y CN 201213321Y
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- Prior art keywords
- light source
- light
- reflecting plate
- electroluminescent light
- utility
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- 239000000758 substrate Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000004020 luminiscence type Methods 0.000 abstract description 5
- 238000005401 electroluminescence Methods 0.000 abstract description 4
- 208000003464 asthenopia Diseases 0.000 abstract description 3
- 238000005538 encapsulation Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000002346 layers by function Substances 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000027756 respiratory electron transport chain Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Electroluminescent Light Sources (AREA)
Abstract
The utility model relates to an organic electroluminescence light source which comprises a baseplate, an anode, an organic functional layer, a cathode and an encapsulation plate in sequence. The utility model is characterized in that the organic electroluminescence light source also comprises a plurality of baffle-boards connected with each side of the baseplate or the encapsulation plate, wherein each baffle-board forms a certain angle with one side face of a corresponding luminescence light source so as to cause light sent out from the side face of the luminescence light source to be emitted in a range that forms minus 45 degrees-45 degrees with the horizontal direction of the luminescence light source after being reflected by the baffle-boards. Through using the baffle-boards in the organic electroluminescence light source, the utility model can effectively utilize the light emitted from the side face to increase the emitting light quantity of an OLED light source and improve the brightness and the luminescence efficiency of the light source, on the other hand, as an eye protecting light source, the utility model also can reduce the contrast of the OLED emitting light and the environmental light around, and can lighten visual fatigue to form a comfortable luminescent environment.
Description
Technical field
The utility model includes organic electroluminescence devices, in particular, relates to a kind of increase light output rating, improves the electroluminescent light source of luminous efficiency.
Background technology
Incandescent lamp and fluorescent lamp are two kinds of conventional white light light sources relatively more commonly used, but they are not high to energy utilization ratio, incandescent lamp with 90% Conversion of energy for heat energy, cause a large amount of energy wastes, and that fluorescent lamp has only utilized also 70% energy to be used for is luminous, the luminous efficiency of general incandescent lamp is 13lm/W～20lm/W, fluorescent tube is 90lm/W, for energy savings, improve energy utilization efficiency, the development of new white light source has bright prospects.
Practical at present solid state light emitter, except that white LED lamp, the nearly in the past 20 years development of organic electroluminescent LED (OLED) technology has also obtained significant progress, along with the performance of monochromatic OLED is ripe gradually, white light OLED is as a kind of new type of solid state light source, aspect illumination and the dull and stereotyped display backlight good prospects for application is being arranged, attracted people more and more to note, white light source is usually by ruddiness, green glow and blue light emission form, initial reason owing to device architecture and material selection, the device energy efficiency is lower, the very high and poor stability of driving voltage, along with the further maturation of the deep and technology of studying, the energy efficiency of OLED has obtained and has significantly improved at present, substantially exceeded incandescent light source, and tangible growth has also been arranged useful life.
The oled light source is not a point-source of light, but distributed plane solid state light emitter, has ultra-thin distinguishing feature, but the light that OLED launches is except from the direction of vertical substrate is evenly sent, certain light output is also arranged in the side of substrate, the light that sends from the side generally speaking is not used effectively, and has caused efficient not high, energy dissipation.
Technical scheme
A purpose of the present utility model is to provide a kind of and can strengthens brightness, improves the electroluminescent light source of light utilization efficiency; Another purpose of the present utility model is to provide a kind of reduction to send the electroluminescent light source of light and surrounding environment contrast.
Above-mentioned purpose of the present utility model is achieved by following technical solution:
A kind of electroluminescent light source, comprise substrate, anode, organic function layer, negative electrode and package board successively, it is characterized in that: also comprise several reflecting plates that are connected with described substrate or each limit of package board, wherein each reflecting plate is certain angle with corresponding side of illuminating source, make the light that sends from the illuminating source side after the reflection of described reflecting plate from being ejaculation in-45 °～45 ° the scope in the horizontal direction with illuminating source.
In above-mentioned electroluminescent light source, reflecting plate is 22.5 °～67.5 ° angle with a side of corresponding illuminating source.
In above-mentioned electroluminescent light source, reflecting plate is made up of reflection part and link two parts, and wherein the angle between reflection part and the link is 22.5+90 °～67.5+90 °.
In above-mentioned electroluminescent light source, an end of link connects with a limit of corresponding package board.
In above-mentioned electroluminescent light source, an end of link connects with a limit of corresponding substrate.
In above-mentioned electroluminescent light source, link is connected with a limit of described package board or substrate by binding agent.
In above-mentioned electroluminescent light source, reflecting plate is by thin and can make by catoptrical material, or thin corrosion resistant plate adds one deck reflectance coating and forms.
When an end of each reflecting plate link of organic electroluminescent light source connects with a limit of corresponding package board, the light that sends from the electroluminescent light source side is through the reflection of reflecting plate, penetrate from being in 0 °～45 ° the scope with the electroluminescent light source light direction, thereby the light that has effectively utilized the side to send, increase the amount of light in oled light source, improved light-source brightness and luminous efficiency.
When an end of each reflecting plate link of organic electroluminescent light source connects with a limit of corresponding substrate; the light that sends from the electroluminescent light source side is through the reflection of reflecting plate; from being-45 °～0 ° interior ejaculation of scope with the electroluminescent light source light direction; the light that this technical scheme effectively utilizes the light source side to send; send to the direction opposite with the light source light direction; thereby improved the brightness of surrounding environment; reduced the contrast of OLED emission light and surrounding environment light; the lighting source that this technical scheme is made can reduce visual fatigue; form a kind of comfortable lighting environment; help protecting eyes, can be used as a kind of eyeshield light source.
Description of drawings
The device architecture profile of first kind of execution mode of Fig. 1 the utility model
01 substrate, 02 anode, 03 organic function layer, 04 negative electrode, 05 package board, 06 bonnet, 07 reflecting plate
The device architecture profile of second kind of execution mode of Fig. 2 the utility model
01 substrate, 02 anode, 03 organic function layer, 04 negative electrode, 05 package board, 06 bonnet, 08 reflecting plate
Reflecting plate and OLED side angular range schematic diagram in first kind of execution mode of Fig. 3 the utility model
01 substrate, 02 anode, 03 organic function layer, 04 negative electrode, 05 package board, 06 bonnet
Reflecting plate and OLED side angular range schematic diagram in second kind of execution mode of Fig. 4 the utility model
01 substrate, 02 anode, 03 organic function layer, 04 negative electrode, 05 package board, 06 bonnet
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment 1
Be the device architecture profile of first kind of execution mode of the utility model as shown in Figure 1; set gradually anode 02 on the transparency carrier 01; organic function layer 03; negative electrode 04; package board 05 and be used for the bonnet 06 of protection device; wherein package board 05 is connected with reflecting plate 07, and organic function layer 03 comprises the one deck at least in luminescent layer and hole injection layer, hole transmission layer, electron transfer layer and the electron injecting layer.
Concrete preparation process is as follows:
At first sputter indium oxide layer tin (ITO) forms transparency electrode on the transparent glass substrate that cleans up, and on the ITO film evaporation auxiliary electrode layer, can be Metal Cr or Ag.
Evaporation is by the film formed organic function layer of multi-layer thin afterwards, evaporation hole transmission layer at first for example, evaporation luminescent layer afterwards, because luminous wide luminescent spectrum and the high color rendering index of requiring in oled light source, can adopt the device architecture of three luminescence centers, the light of selecting for use R, G, three kinds of luminescent dyes of B to send respectively, combination obtains white light.
Continue evaporation electron transfer layer and metallic cathode.
Encapsulate afterwards, the device and the package board 05 of above-mentioned preparation are carried out pressing, finish encapsulation, reflecting plate 07 is made up of reflection part and link two parts, wherein package board 05 and reflecting plate 07 an end of link be connected, as shown in Figure 1, the link of reflecting plate 07 can be by binding agent and package board 05 be adhesively fixed, the material of the reflection part of reflecting plate 07 can select any thin can catoptrical material, as high reflectance glass, also can be that PET material or thin corrosion resistant plate surface add one deck reflectance coating.Can after finishing packaged device, add a bonnet afterwards, device is protected.
Reflecting plate 07 is positioned at the side in oled light source, can increase a reflecting plate in each side in oled light source, the reflection part of reflecting plate 07 and the angle of link are 22.5+90 °～67.5+90 °, the angle of reflection part and oled light source face is in 22.5 °～67.5 ° scopes, as shown in Figure 3, because we are generally with the approximate directional light of regarding as of the light of side-emitted, in the time of in reflecting plate 07 is installed in this angular range, the light of side-emitted can be limited in and output downwards in oled light source light direction becomes to be 45 ° scope substantially, consistent with the emergent light direction in oled light source, thereby all light that can effectively utilize the oled light source to send, it is converged in people's the visual range, increase the amount of light in oled light source, improved light-source brightness and luminous efficiency.
Embodiment 2
Be the device architecture profile of second kind of execution mode of the utility model as shown in Figure 2; set gradually anode 02 on the transparency carrier 01; organic function layer 03; negative electrode 04; package board 05 and be used for the bonnet 06 of protection device; wherein package board 05 is connected with substrate 01, and organic function layer 03 comprises the one deck at least in luminescent layer and hole injection layer, hole transmission layer, electron transfer layer and the electron injecting layer.
The preparation process in present embodiment oled light source is with embodiment 1, the difference part is, reflecting plate 07 is connected with substrate 01, reflecting plate 07 is made up of reflection part and link two parts in the same present embodiment, the wherein end connection on an end of reflection part and corresponding substrate 01 surface, as shown in Figure 3, the two can pass through the adhesive be adhesively fixed, and the area of link and substrate 01 coupling part is as far as possible little, guarantees can not cover the luminous zone, influences the luminous of light source.The material of the reflection part of same reflecting plate 07 can select any thin can catoptrical material, as high reflectance glass, also can be that PET material or thin corrosion resistant plate surface add one deck reflectance coating.
The reflection part of reflecting plate 07 and the angle of link are 22.5+90 °～67.5+90 °; the angle of reflection part and oled light source face is in 22.5 °～67.5 ° scopes; as shown in Figure 4; because we are generally with the approximate directional light of regarding as of the light of side-emitted; in the time of in reflecting plate 07 is installed in this angular range; the light of side-emitted can be limited in being upwards output in-45 ° the scope with oled light source light direction substantially; opposite with the emergent light direction in oled light source; pass through in the present embodiment reflecting plate 07 is connected with substrate 01; the light that oled light source face can be sent scatters in the environment opposite with oled light source emergent light after reflecting; thereby improved the brightness of surrounding environment; reduced the contrast of OLED emission light and surrounding environment light; the lighting source that adopts this embodiment technical scheme to make can reduce visual fatigue; form a kind of comfortable lighting environment; help protecting eyes, can be used as a kind of eyeshield light source.
Claims (7)
1, a kind of electroluminescent light source, comprise substrate, anode, organic function layer, negative electrode and package board successively, it is characterized in that: also comprise several reflecting plates that are connected with described substrate or each limit of package board, wherein each reflecting plate is certain angle with corresponding side of illuminating source, make the light that sends from the illuminating source side after the reflection of described reflecting plate from being ejaculation in-45 °～45 ° the scope in the horizontal direction with illuminating source.
2, according to the electroluminescent light source of claim 1, it is characterized in that: described reflecting plate is 22.5 °～67.5 ° angle with a side of corresponding illuminating source.
3, according to the electroluminescent light source of claim 2, it is characterized in that: described reflecting plate is made up of reflection part and link two parts, wherein reflection part is 22.5 °～67.5 ° angle with a side of corresponding illuminating source, and the angle between reflection part and the link is 22.5+90 °～67.5+90 °.
4, according to the electroluminescent light source of claim 3, it is characterized in that: an end of described link connects with a limit of corresponding package board.
5, according to the electroluminescent light source of claim 3, it is characterized in that: an end of described link connects with a limit of corresponding substrate.
6, according to the electroluminescent light source of claim 4 or 5, it is characterized in that: described link is connected with a limit of described package board or substrate by binding agent.
7, according to the electroluminescent light source of the arbitrary claim of claim 1-5, it is characterized in that: described reflecting plate is by thin and can make by catoptrical material, or thin corrosion resistant plate surface adds one deck reflectance coating and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201089309U CN201213321Y (en) | 2008-06-30 | 2008-06-30 | Organic electroluminescent light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201089309U CN201213321Y (en) | 2008-06-30 | 2008-06-30 | Organic electroluminescent light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201213321Y true CN201213321Y (en) | 2009-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201089309U Expired - Lifetime CN201213321Y (en) | 2008-06-30 | 2008-06-30 | Organic electroluminescent light source |
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| Country | Link |
|---|---|
| CN (1) | CN201213321Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201519A (en) * | 2010-03-22 | 2011-09-28 | Lg伊诺特有限公司 | Light emitting device, package for light emitting device and illumination system |
| WO2016184059A1 (en) * | 2015-05-20 | 2016-11-24 | 京东方科技集团股份有限公司 | Organic light emitting diode substrate and organic light emitting diode device |
-
2008
- 2008-06-30 CN CNU2008201089309U patent/CN201213321Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201519A (en) * | 2010-03-22 | 2011-09-28 | Lg伊诺特有限公司 | Light emitting device, package for light emitting device and illumination system |
| CN102201519B (en) * | 2010-03-22 | 2015-09-09 | Lg伊诺特有限公司 | Luminescent device, light emitting device package and illuminator |
| WO2016184059A1 (en) * | 2015-05-20 | 2016-11-24 | 京东方科技集团股份有限公司 | Organic light emitting diode substrate and organic light emitting diode device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Room 1, building 1, ring tower, No. 100085 East Road, Haidian District, Beijing, China Co-patentee after: Weixinnuo Science and Technology Co., Ltd., Beijing Address before: Rainbow Building, No. 11, information road, Beijing, Haidian District. Zip code: 100085 Co-patentee before: Weixinnuo Science and Technology Co., Ltd., Beijing |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090325 |