CN106328669A - Organic light emitting display device - Google Patents
Organic light emitting display device Download PDFInfo
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- CN106328669A CN106328669A CN201510352974.0A CN201510352974A CN106328669A CN 106328669 A CN106328669 A CN 106328669A CN 201510352974 A CN201510352974 A CN 201510352974A CN 106328669 A CN106328669 A CN 106328669A
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- China
- Prior art keywords
- light
- display device
- emitting display
- cover plate
- organic light
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention relates to an organic light emitting display device. The display device comprises a substrate, an organic light emitting device which is formed on the substrate and a packaging cover plate which is arranged on the light emergent side of the organic light emitting device. The packaging cover plate is provided with multiple light transmitting areas and light absorbing areas which are arranged among the light transmitting areas. The light transmitting areas and the light absorbing areas are not mutually overlapped, and the position of each light transmitting area on the packaging cover plate is corresponding to the position of the organic light emitting device so that the organic light emitting device is enabled to emit light through the light transmitting areas, and the light absorbing areas absorb light of which the wavelength range is within 380nm-780nm. According to the organic light emitting display device, the brightness performance and the contrast performance of the display device can be greatly balanced on the whole so that the overall display effect can be improved.
Description
Technical field
The present invention relates to field of organic electroluminescence, be specifically related to a kind of organic light-emitting display device.
Background technology
Organic luminescent device is that after utilizing applied voltage, the Carrier recombination that injects excites organic material luminous
Device, has that self-luminous, high efficiency, low-voltage, response be fast, visual angle width, can be made in flexible base board etc.
Many a little can make display or illuminating device, the extremely concern of society.
Organic Light Emitting Diode (OLED) is self luminous display device, has widely in display field
Application.For OLED, contrast is a very important display performance parameter, the most permissible
(such as signal) and the ratio without using up (such as noise) are used up in having of being simply defined as that display sends,
And in actual application environment, depend on extraneous reflection light without using up.
OLED display, particularly top emitting AMOLED, general employing high reflecting metal is as electrode
Material, under the irradiation of ambient light, inevitable that certain light is reflected, presents similar minute surface
Reflection.Extraneous transmitting light can affect the display performances such as the contrast of display screen.
In correlation technique, in order to reduce the extraneous impact launching light, rotatory polarization sheet typically can be used to improve
Display contrast.But rotatory polarization sheet has individual shortcoming, its light transmittance is the highest, therefore largely effects on
OLED goes out light, makes the luminance-reduction of display.
Summary of the invention
In view of the problems referred to above and/or the other problems of prior art, the invention provides one and improve whole
The organic light-emitting display device of body display effect.
The invention provides a kind of organic light-emitting display device, comprising: substrate；Organic illuminator
Part, it is formed on described substrate；And encapsulation cover plate, it is connected with described substrate thus to form one close
Envelope space, described organic luminescent device is packaged in this sealing space；Described encapsulation cover plate is positioned at institute
That states organic luminescent device goes out light side；Wherein, described encapsulation cover plate be provided with several transmission region and
Several absorbance region, described transmission region does not overlaps each other with described absorbance region, and described cap
On plate, the position of each described transmission region is corresponding with the position of described organic luminescent device respectively,
So that described organic luminescent device can go out light by described transmission region；Described absorbance region absorbs
Wave-length coverage falls into the light in 380nm～780nm.
Preferably, absorptance >=95% of described absorbance region or reflectance≤3%.
Preferably, the described absorbance region of described encapsulation cover plate scribbles light-absorbing coating.
Preferably, what described light-absorbing coating was coated on described encapsulation cover plate is positioned at described sealing space side
Surface.
Preferably, the light absorbent that described light-absorbing coating is used is blacking, containing extinction carbon nanometer
The coating of pipe or their mixture.
Preferably, described blacking is the black ink using white carbon black and/or graphite to make.
Preferably, described light-absorbing coating uses inkjet printing, print or described in the mode that be coated with is formed at
The absorbance region of encapsulation cover plate.
Preferably, the thickness of described light-absorbing coating is 100～800 μm.
Preferably, described encapsulation cover plate is glass material.
Preferably, described organic luminescent device is top emission type AMOLED.
The organic light-emitting display device of the present invention, uses the mode of simple low cost, can obtain simultaneously
Preferably brightness characteristics and contrast performance；Concrete, encapsulation cover plate is provided with transmission region and suction
Light region, on the one hand, absorbance region is produced extraneous reflection in can being absorbed into display device
Light, has been essentially ensures that the contrast of display device；On the other hand, transmission region ensure that organic
Optical device go out light, i.e. ensure that the brightness of display device, improve light extraction efficiency thus improve organic
The life-span of luminescent device；In a word, the organic light-emitting display device of the present invention the most preferably balances
The brightness characteristics of display device and contrast performance, improve overall display effect.
Accompanying drawing explanation
Fig. 1 is the partial cutaway view schematic of the organic light-emitting display device of the embodiment of the present invention；
Fig. 2 is the schematic top plan view of the encapsulation cover plate of the organic light-emitting display device of the embodiment of the present invention.
Detailed description of the invention
It is described more fully with example embodiment referring now to accompanying drawing.But, example embodiment energy
Enough implement in a variety of forms, and be not understood as limited to embodiment set forth herein；On the contrary, carry
Make the present invention will fully and completely for these embodiments, and by comprehensive for the design of example embodiment
Convey to those skilled in the art.The most identical reference represents same or similar knot
Structure, thus repetition thereof will be omitted.
Described feature, structure or characteristic can be combined in one or more in any suitable manner
In embodiment.In the following description, it is provided that many details thus provide the reality to the present invention
Execute fully understanding of mode.But, one of ordinary skill in the art would recognize that do not have in specific detail
One or more, or use other method, constituent element, material etc., it is also possible to put into practice the present invention's
Technical scheme.In some cases, be not shown in detail or describe known features, material or operation with
Avoid the fuzzy present invention.
The accompanying drawing of the present invention is only used for signal relative position relation and electrical connection, the layer at some position
Thickness have employed the plotting mode lavished praise on oneself so that understanding, the thickness in accompanying drawing does not represent actual thickness
Proportionate relationship.
Embodiment 1
Seeing Fig. 1, for the cross-sectional schematic of the organic light-emitting display device of the embodiment of the present invention 1, this has
Machine luminous display unit, including substrate 3, is formed at organic luminescent device 2 on substrate 3, and cap
Plate 1, encapsulation cover plate 1 is connected with substrate 3 by encapsulating material thus forms a sealing space 4, You Jifa
Optical device 2 is packaged in this sealing space 4；What encapsulation cover plate 1 was positioned at organic luminescent device 2 goes out light
Side.
Seeing Fig. 2, encapsulation cover plate 1 is provided with several transmission region 12 and is positioned at these transmission regions 12
Between absorbance region 11, transmission region 12 and absorbance region 11 do not overlap each other.
Wherein, each transmission region 12 is corresponding with the position of organic luminescent device 2, specifically,
It is corresponding with the luminous open region of organic luminescent device 2, so that organic luminescent device 2 can be by thoroughly
Light region 12 goes out light.
The luminous open region of organic luminescent device 2 refers to the region of pixel light emission.See Fig. 1, You Jifa
Optical device 2 includes TFT layer 22, the luminescent layer (21R, 21G and 21B) being formed on TFT layer 22
And limit the pixel confining layers 23 of each luminous open area.Wherein, luminescent layer (21R, 21G and
21B) i.e. corresponding to R/G/B pixel openings, and with the corresponding transmission region 12 on encapsulation cover plate 1
It is corresponding in turn to.
Wherein, absorbance region 11 absorbing wavelength scope falls into the light in 380nm～780nm.
In the present embodiment, absorptance >=95% of absorbance region 11 or reflectance≤3%.
The organic light-emitting display device of embodiment 1, uses the mode of simple low cost to ensure to show bright simultaneously
Degree and contrast performance, concrete, encapsulation cover plate 1 is provided with transmission region 12 and absorbance region 11,
On the one hand, absorbance region 11 is produced extraneous reflection light in can being absorbed into display device, i.e. protects
Demonstrate,prove the contrast of display device；On the other hand, transmission region 12 ensure that going out of organic luminescent device
Light, also ensure that the brightness of display device the most simultaneously, improves light extraction efficiency thus improves organic illuminator
The life-span of part 2.
In the present embodiment, the absorbance region 11 of encapsulation cover plate 1 scribbles light-absorbing coating.Preferably, inhale
Light coating is coated on the surface being positioned at sealing side, space 4 of encapsulation cover plate 1.
The light absorbent that light-absorbing coating is used can be blacking, coating containing extinction CNT
Or their mixture.Wherein, blacking can be to use the material such as white carbon black and/or graphite to make
Black ink.Such as, light absorbent can use commercially available Marabu ink/SR073 black ink,
It uses white carbon black, graphite, CNT, and by forming with applicable solvent and fixative mixing regulation.
In the present embodiment, light-absorbing coating can be formed in the way of using inkjet printing, printing or be coated with.
Preferably, by the way of inkjet printing, the inner surface sealing side, space 4 of encapsulation cover plate 1 is carried out
Patterning, avoids the transmission region 12 corresponding with each luminous open region, to form several transmission region 12
Between absorbance region 11.
The thickness of light-absorbing coating can be 100～800 μm, it is also possible to is 200～700 μm, it is also possible to for
300～600 μm, it is also possible to be 400～500 μm.In the present embodiment, the thickness of light-absorbing coating is about
230μm。
In the present embodiment, encapsulation cover plate 1 is glass material.Encapsulation cover plate 1 can also use glass etc.
Printing opacity or semi-transparent material.It addition, in the present embodiment, substrate 3 is also glass material.Substrate 3 is also
Can be the materials such as PI.
In another specific embodiment of the present invention, can be to printing opacity or the encapsulation cover plate of semi-transparent material
The outer surface of 1 patterns, and avoids the transmission region 12 corresponding with each luminous open region, coats extinction
Coating is to form absorbance region 11.In another specific embodiment of the present invention, it is also possible at printing opacity or
The encapsulation cover plate 1 of semi-transparent material be internally embedded light-absorbing coating to form absorbance region 11.
The organic light-emitting display device of embodiment 1 and the contrast of the organic light-emitting display device of prior art
And brightness characteristics Data Comparison such as table 1 below；Wherein comparative example 1 is with 1/4th in prior art
The top emission type AMOLED display device of the rotatory polarization sheet of wave plate, comparative example 2 does not has in prior art
There is the top emission type AMOLED display device of rotatory polarization sheet.
Table 1
| Comparative example 1 | Comparative example 2 | Embodiment 1 | |
| Brightness | 260Nits | 605Nits | 508Nits |
| Contrast | 23865:1 | 13636:1 | 18960:1 |
As can be seen from Table 1, with the top emission type using the rotatory polarization sheet with quarter-wave plate
AMOLED display device is compared, and the organic light-emitting display device of the embodiment of the present invention 1 improves display
Brightness, goes far towards the lifting of display life, although contrast slightly reduces, but is sufficient for one
As customer demand；Compared with the top emission type AMOLED display device not using rotatory polarization sheet, this
The organic light-emitting display device of inventive embodiments 1, on the basis of ensureing brightness, substantially increases display right
Degree of ratio.
It is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment
Only comprising an independent technical scheme, this narrating mode of description is only for clarity sake, this
Skilled person should be using description as an entirety, and the technical scheme in each embodiment can also
Through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
The a series of detailed description of those listed above is only for the feasibility embodiment of the present invention
Illustrate, they also are not used to limit the scope of the invention, all without departing from skill of the present invention essence
Equivalent implementations or change that god is made should be included within the scope of the present invention.
Claims (10)
1. an organic light-emitting display device, including:
Substrate；
Organic luminescent device, it is formed on described substrate；And
Encapsulation cover plate, is connected with described substrate thus forms a sealing space, described organic luminescent device quilt
It is packaged in this sealing space；What described encapsulation cover plate was positioned at described organic luminescent device goes out light side；Its
In,
Described encapsulation cover plate is provided with several transmission region and several absorbance region, described transmission region and institute
State absorbance region not overlap each other, and the position difference of each described transmission region on described encapsulation cover plate
It is corresponding with the position of described organic luminescent device, so that described organic luminescent device can be by described
Transmission region goes out light；
Described absorbance region absorbing wavelength scope falls into the light in 380nm～780nm.
2. organic light-emitting display device as claimed in claim 1, wherein: the extinction of described absorbance region
Rate >=95% or reflectance≤3%.
3. organic light-emitting display device as claimed in claim 1, wherein: described encapsulation cover plate described
Absorbance region scribbles light-absorbing coating.
4. organic light-emitting display device as claimed in claim 3, wherein: described light-absorbing coating is coated on
The surface being positioned at side, described sealing space of described encapsulation cover plate.
5. organic light-emitting display device as claimed in claim 4, wherein:
The light absorbent that described light-absorbing coating is used is blacking, coating containing extinction CNT
Or their mixture.
6. organic light-emitting display device as claimed in claim 5, wherein:
Described blacking is the black ink using white carbon black and/or graphite to make.
7. organic light-emitting display device as claimed in claim 3, wherein: described light-absorbing coating uses
Inkjet printing, print or the mode that is coated with is formed at the absorbance region of described encapsulation cover plate.
8. organic light-emitting display device as claimed in claim 3, wherein: the thickness of described light-absorbing coating
Degree is 100～800 μm.
9. organic light-emitting display device as claimed in any of claims 1 to 8 in one of claims, wherein:
Described encapsulation cover plate is glass material.
10. organic light-emitting display device as claimed in claim 9, wherein:
Described organic luminescent device is top emission type AMOLED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352974.0A CN106328669A (en) | 2015-06-24 | 2015-06-24 | Organic light emitting display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352974.0A CN106328669A (en) | 2015-06-24 | 2015-06-24 | Organic light emitting display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106328669A true CN106328669A (en) | 2017-01-11 |
Family
ID=57727885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510352974.0A Pending CN106328669A (en) | 2015-06-24 | 2015-06-24 | Organic light emitting display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571236A (en) * | 2018-06-06 | 2019-12-13 | 上海和辉光电有限公司 | Organic light-emitting display device and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700693A (en) * | 2013-12-30 | 2014-04-02 | 北京维信诺科技有限公司 | Organic luminous display device |
| US20150097168A1 (en) * | 2013-10-09 | 2015-04-09 | Sony Corporation | Display device and electronic apparatus |
| CN104617227A (en) * | 2013-11-05 | 2015-05-13 | 昆山国显光电有限公司 | Organic light emitting display device |
-
2015
- 2015-06-24 CN CN201510352974.0A patent/CN106328669A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150097168A1 (en) * | 2013-10-09 | 2015-04-09 | Sony Corporation | Display device and electronic apparatus |
| CN104617227A (en) * | 2013-11-05 | 2015-05-13 | 昆山国显光电有限公司 | Organic light emitting display device |
| CN103700693A (en) * | 2013-12-30 | 2014-04-02 | 北京维信诺科技有限公司 | Organic luminous display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571236A (en) * | 2018-06-06 | 2019-12-13 | 上海和辉光电有限公司 | Organic light-emitting display device and electronic equipment |
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Application publication date: 20170111 |
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| RJ01 | Rejection of invention patent application after publication |