CN207947277U - A kind of top light emitting display panel and display device - Google Patents
A kind of top light emitting display panel and display device Download PDFInfo
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- CN207947277U CN207947277U CN201820455013.1U CN201820455013U CN207947277U CN 207947277 U CN207947277 U CN 207947277U CN 201820455013 U CN201820455013 U CN 201820455013U CN 207947277 U CN207947277 U CN 207947277U
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Abstract
This application involves light emitting device technologies field more particularly to a kind of top light emitting display panel and display devices.Include mainly：Reflecting electrode；Organic Light Emitting Diode, wherein the Organic Light Emitting Diode includes the first transparency electrode layer, luminescent layer and half-reflection and half-transmission layer being stacked；Optical compensating layer, the optical compensating layer are arranged between the reflecting electrode and the first transparency electrode layer.To which the microcavity chamber for increasing the top light emitting display panel is long, promotes the outgoing efficiency for the light that luminescent layer generates, and promotes the display quality of top light emitting display panel.
Description
Technical field
This application involves light emitting device technologies field more particularly to a kind of top light emitting display panel and display devices.
Background technology
Currently, in order to chase better display quality, OLED luminescent devices have increasingly been used for display technology field.
Existing OLED luminescent devices mainly include anode, cathode and between anode and cathode it is all kinds of shine
Device film layer.Shown in referring to Fig.1, existing top illuminating device includes successively from the bottom to top：Reflecting electrode 11, anode 12, hole
In addition implanted layer 13, hole transmission layer 14, luminescent layer 15, electron transfer layer 16, electron injecting layer 17 and cathode 18 also have and set
The reflecting electrode 19 below reflecting electrode 11 is set, the reflecting electrode 19 and cathode 18 are generally metallic silver, in this way, reflecting
Form optical microcavity between electrode 19 and cathode 18, the light generated in order to luminescent layer 15 can by the effect of optical microcavity from
Light-emitting surface is emitted.
But the light output rate of the optical microcavity of current top emitting device is relatively low.
Utility model content
A kind of top light emitting display panel of the application offer and display device, to solve top emitting existing in the prior art
The relatively low problem of the light output rate of the optical microcavity of device.
In order to solve the above-mentioned technical problem, the embodiment of the present application uses following technical proposals：
A kind of top light emitting display panel, including：
Reflecting electrode；
Organic Light Emitting Diode, wherein the Organic Light Emitting Diode includes the first transparency electrode layer being stacked, hair
Photosphere and half-reflection and half-transmission layer；
Optical compensating layer, the optical compensating layer are arranged between the reflecting electrode and the first transparency electrode layer.
Optionally, the luminescent layer includes the sub-pixel of different colours, and the optical compensating layer is arranged at and one kind
The corresponding region of color sub-pixels.
Optionally, it is arranged at a kind of optical compensating layer in region corresponding with color sub-pixels and is located at and other face
The thickness of the optical compensating layer in the corresponding region of sub-pixels is different.
Optionally, the optical compensating layer is correspondingly arranged at the red sub-pixel layer and the green sub-pixels layer corresponds to
Region in, preferably correspond to red sub-pixel layer setting optical compensating layer thickness be more than correspond to the green sub-pixels layer
The thickness for the optical compensating layer being correspondingly arranged.
Optionally, the luminescent layer includes red sub-pixel layer, green sub-pixels layer, blue subpixels layer, the optics
Compensation layer is arranged in the corresponding region of the red sub-pixel layer.
Optionally, the thickness range for being correspondingly arranged at the optical compensating layer of the red sub-pixel layer is 10nm-
90nm。
Optionally, further include the hole transmission layer being arranged between the first transparency conducting layer and luminescent layer, be arranged at
And a kind of hole transmission layer in the corresponding region of color sub-pixels and the hole positioned at region corresponding with other color sub-pixels
The thickness of transport layer is different.
Optionally, the luminescent layer includes red sub-pixel layer, green sub-pixels layer, blue subpixels layer, is correspondingly arranged
The hole transmission layer of the red sub-pixel layer thickness and be correspondingly arranged at the hole transmission layer of the green sub-pixels layer
Thickness be more than corresponding to the blue subpixels layer hole transmission layer thickness.
Optionally, correspond to the sum of the optical compensating layer of the red sub-pixel layer and the thickness of the hole transmission layer no
Less than the sum of the thickness that the green sub-pixels layer corresponds to the optical compensating layer and the hole transmission layer.
Optionally, the material of the optical compensating layer is inorganic transparent conductive material, the preferably described inorganic transparent conduction material
Material is one or more in indium tin oxide, antimony-doped tin oxide, aluminium-doped zinc oxide.
A kind of display device, including the top light emitting display panel.
Above-mentioned at least one technical solution that the application uses can reach following advantageous effect：
Through the above technical solutions, between reflecting electrode and the first transparency electrode (anode) of Organic Light Emitting Diode
Optical compensating layer is set, it is thus possible to which the microcavity chamber for increasing the top light emitting display panel is long, promotes the light that luminescent layer generates
Outgoing efficiency promotes the display quality of top light emitting display panel.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please do not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of top light emitting display panel in the prior art；
Fig. 2 is one of the structural schematic diagram of top light emitting display panel provided by the present application；
Fig. 3 a are the second structural representation of top light emitting display panel provided by the present application；
Fig. 3 b are the third structural representation of top light emitting display panel provided by the present application；
Fig. 4 is the Structure Comparison figure of existing top light emitting display panel and the top light emitting display panel of the application.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall in the protection scope of this application.
Below in conjunction with attached drawing, the technical solution that each embodiment of the application provides is described in detail.
With reference to shown in Fig. 2, for a kind of structural schematic diagram of top light emitting display panel provided by the present application, the top luminescence display
Panel is OLED light emitting display panels, includes mainly：
Reflecting electrode 21 is arranged the optical compensating layer 22 on 21 1 surface of reflecting electrode, is arranged in optical compensating layer 22
The Organic Light Emitting Diode 23 on the surface far from reflecting electrode 21, wherein the Organic Light Emitting Diode 23 includes being stacked
First transparency electrode layer 231, luminescent layer 232 and half-reflection and half-transmission layer 233.
In fact, first transparency electrode layer 231 can be understood as the anode of Organic Light Emitting Diode 23, generally can be
ITO or other electrically conducting transparent materials.Half-reflection and half-transmission layer 233 is the cathode of Organic Light Emitting Diode 23, generally metal material, such as
Metallic silver.Reflecting electrode 21 can be the metal material with reflex, such as preferred metallic silver.
By the technical solution, set between reflecting electrode and the first transparency electrode (anode) of Organic Light Emitting Diode
Optical compensating layer is set, it is thus possible to which the microcavity chamber for increasing the top light emitting display panel is long, promotes going out for the light that luminescent layer generates
Efficiency is penetrated, the display quality of top light emitting display panel is promoted.
Preferably, with reference to shown in Fig. 3 a, in this application, the luminescent layer 232 includes the sub-pixel of different colours, described
Optical compensating layer 22 is arranged at a kind of corresponding region of color sub-pixels.
The case where a kind of color sub-pixels corresponding region being provided only on for optical compensating layer 22, in Fig. 3 a, group
Pixel 2321 includes：Red sub-pixel layer 2321R, green sub-pixels layer 2321G, blue subpixels layer 2321B, optical compensating layer
22 are arranged in the corresponding regions red sub-pixel 2321R.Correspondingly, the optics for being correspondingly arranged at red sub-pixel layer 2321R is mended
The thickness range for repaying layer 22 is 10nm-90nm.It is thus possible to which the microcavity chamber for increasing corresponding sub-pixel corresponding region is long, light is promoted
The outgoing efficiency of line.
For the setting of optical compensating layer 22 the multiple color sub-pixel corresponding region the case where, be arranged at it is a kind of
The optical compensating layer in the corresponding region of color sub-pixels and the optical compensating layer for being located at region corresponding with other color sub-pixels
Thickness it is different.With reference to shown in Fig. 3 b, the thickness being arranged in the optical compensating layer 22 in the corresponding regions red sub-pixel 2321R is big
In the thickness in the optical compensation film layer in the corresponding regions green sub-pixels 2321G is arranged.With reference to shown in Fig. 3 b, optical compensating layer
22 are arranged in red sub-pixel 2321R and the corresponding regions green sub-pixels layer 2321G.It is thus possible to increase corresponding sub- picture
The microcavity chamber of plain corresponding region is long, promotes the outgoing efficiency of light.
In addition, in this application, it is contemplated that the driving voltage in the corresponding region of some sub-pixels is larger, then, it can be with
The thicknesses of layers of organic luminescent device is further adjusted based on the adjustment grown to microcavity chamber, to reduce driving voltage.
Optionally, further include the hole transmission layer 234 being arranged between the first transparency conducting layer 231 and luminescent layer 232, until
It is few be arranged and a kind of corresponding region of color sub-pixels hole transmission layer 234 be located at it is corresponding with other color sub-pixels
The thickness of the hole transmission layer 234 in region is different.With reference to shown in Fig. 3 b, luminescent layer 232 includes red sub-pixel layer 2321R, green
Sub-pixels layer 2321G, blue subpixels layer 2321B, are correspondingly arranged at the hole transmission layer 234 of red sub-pixel layer 2321R
Thickness and be correspondingly arranged at the green sub-pixels layer 2321G hole transmission layer 234 thickness be respectively greater than correspond to
The thickness of the hole transmission layer 234 of blue subpixels layer 2321B.
It is red in view of the material limitation of the red sub-pixel layer of luminescent layer in top light emitting display panel in the prior art
The luminous efficiency of sub-pixels layer is not high, therefore, in order to ensure the luminous harmony of a variety of colors sub-pixel corresponding region, more into
One step, shown in Fig. 3 b, corresponding to the optical compensating layer 22 and hole transmission layer 234 of red sub-pixel layer 2321R
The sum of thickness corresponds to the optical compensating layer 22 and the hole transmission layer 234 not less than the green sub-pixels layer 2321G
The sum of thickness.
Optionally, the thickness range of hole transmission layer 234 is：50nm-300nm.Existing hole transmission layer 234 as a result,
Thickness be greater than 300nm, and the application passes through the thickness that hole transmission layer 234 is thinned so that Organic Light Emitting Diode 23 it
Between thicknesses of layers reduce, reduce driving voltage.
It should be noted that the hole transmission layer 234 involved by the application may include multiple sub- film layers, every sub- film layer
Material it is inconsistent, change step by step to realize the function of energy level transition to form energy level.Correspondingly, to hole transmission layer
234 carry out be thinned when, any sub- film layer in hole transmission layer 234 can be thinned, or same to plurality of sub- film layer
When be thinned.
Optionally, it is located in the corresponding regions red sub-pixel 2321R, while the hole transmission layer 234 and light is set
Compensation layer 22 is learned, the thickness range of the hole transmission layer 234 is 100nm-150nm.
Wherein, the thickness of the hole transmission layer 234 in the regions corresponding red sub-pixel 2321R can be close to green sub-pixels
The thickness of the hole transmission layer 234 in the regions 2321G.
Preferably, the thickness range of the first inorganic transparent conductive layer 29 is 10nm-90nm；Correspond to the red of the luminescent layer 26
The thickness range of the third hole transmission layer 210 in color pixel Zone R domain is 10nm-40nm.
Referring in particular to shown in Fig. 4, structure and the application top luminescence display face of light emitting display panel are pushed up in the prior art
The Structure Comparison figure of plate, wherein left figure is to push up light emitting display panel in the prior art, and hole-transporting layer (only marks the film
Layer) A thickness be 200nm；Right figure be the application top light emitting display panel, hole-transporting layer (only mark the film layer 234 with
And optical compensating layer 22) 234 thickness be 150nm.As it can be seen that the hole transmission layer 234 of the corresponding regions red sub-pixel 2321R
Thickness is significantly less than the thickness of prior art hole-transporting layer.In this way, in Organic Light Emitting Diode, red sub-pixel
The thicknesses of layers in the corresponding regions 2321R is relatively thin, then, driving voltage accordingly reduces.At the same time it can also be ensured that microcavity chamber is long,
Promote the display quality of top light emitting display panel.
It should be noted that top light emitting display panel involved in the application further includes being arranged in reflecting electrode far from hair
The optical coupled film layer on one surface of photosphere, and other auxiliary being arranged between first transparency electrode layer and half-reflection and half-transmission layer are sent out
Light film layer, the application do not repeat.
In the application, the material of optical compensating layer 22 is inorganic transparent conductive material.The thickness range of optical compensating layer 22
For 10nm-90nm.The inorganic transparent conductive material can be in indium tin oxide, antimony-doped tin oxide, aluminium-doped zinc oxide
One or more combinations.
Optionally, the sheet resistance of optical compensating layer 22 is 5-50 ohm-sqs centimetre.To, meet required conductive demand,
Ensure rational voltage driving.
Meanwhile the present embodiment additionally provides a kind of display device, which includes the top light emitting display panel.
In addition, the display device can be mobile phone, tablet computer, television set, display, laptop, Digital Frame, navigator,
Any product or component with display function such as intelligent wearable device.For other essential compositions of the display device
Part is it will be apparent to an ordinarily skilled person in the art that having, and this will not be repeated here, also should not be used as to the application's
Limitation.
Above is only an example of the present application, it is not intended to limit this application.For those skilled in the art
For, the application can have various modifications and variations.It is all within spirit herein and principle made by any modification, equivalent
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (11)
1. a kind of top light emitting display panel, which is characterized in that including：
Reflecting electrode；
Organic Light Emitting Diode, wherein the Organic Light Emitting Diode includes first transparency electrode layer, the luminescent layer being stacked
With half-reflection and half-transmission layer；
Optical compensating layer, the optical compensating layer are arranged between the reflecting electrode and the first transparency electrode layer.
2. top light emitting display panel as described in claim 1, which is characterized in that the luminescent layer includes the sub- picture of different colours
Element, the optical compensating layer are arranged at region corresponding with a kind of color sub-pixels.
3. top light emitting display panel as claimed in claim 2, which is characterized in that be arranged at and a kind of color sub-pixels pair
The optical compensating layer in the region answered and positioned at the thickness of optical compensating layer in region corresponding with other color sub-pixels it is different.
4. top light emitting display panel as claimed in claim 3, which is characterized in that the optical compensating layer is correspondingly arranged at described
In red sub-pixel layer and the corresponding region of the green sub-pixels layer, the optical compensation of red sub-pixel layer setting is preferably corresponded to
The thickness of layer is more than the thickness for corresponding to the optical compensating layer that the green sub-pixels layer is correspondingly arranged.
5. as claimed in claim 2 top light emitting display panel, which is characterized in that the luminescent layer include red sub-pixel layer,
Green sub-pixels layer, blue subpixels layer, the optical compensating layer are arranged in the corresponding region of the red sub-pixel layer.
6. top light emitting display panel as claimed in claim 5, which is characterized in that be correspondingly arranged at the red sub-pixel layer
The thickness range of the optical compensating layer is 10nm-90nm.
7. top light emitting display panel as claimed in claim 2, which is characterized in that further include setting in the first transparency conducting layer and
Hole transmission layer between luminescent layer, is arranged at a kind of hole transmission layer in region corresponding with color sub-pixels and is located at
The thickness of hole transmission layer in region corresponding from other color sub-pixels is different.
8. as claimed in claim 7 top light emitting display panel, which is characterized in that the luminescent layer include red sub-pixel layer,
Green sub-pixels layer, blue subpixels layer are correspondingly arranged at the thickness and correspondence of the hole transmission layer of the red sub-pixel layer
Thickness in the hole transmission layer of the green sub-pixels layer is set more than the hole transport corresponding to the blue subpixels layer
The thickness of layer.
9. top light emitting display panel as claimed in claim 8, which is characterized in that correspond to the optics of the red sub-pixel layer
The sum of thickness of compensation layer and the hole transmission layer not less than the green sub-pixels layer correspond to the optical compensating layer and
The sum of the thickness of the hole transmission layer.
10. top light emitting display panel as described in claim 1, which is characterized in that the material of the optical compensating layer is inorganic
Transparent conductive material, the preferably described inorganic transparent conductive material are selected from indium tin oxide, antimony-doped tin oxide, aluminium-doped zinc oxide
In it is one or more.
11. a kind of display device, which is characterized in that including claim 1-10 any one of them top light emitting display panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820455013.1U CN207947277U (en) | 2018-04-02 | 2018-04-02 | A kind of top light emitting display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820455013.1U CN207947277U (en) | 2018-04-02 | 2018-04-02 | A kind of top light emitting display panel and display device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165088A (en) * | 2019-03-12 | 2019-08-23 | 上海视涯信息科技有限公司 | A kind of preparation method of OLED device |
| CN110323357A (en) * | 2019-07-03 | 2019-10-11 | 京东方科技集团股份有限公司 | Organic Light Emitting Diode, display panel and display device |
| CN111341820A (en) * | 2020-03-12 | 2020-06-26 | 昆山国显光电有限公司 | Display panel and display device |
| CN112310186A (en) * | 2020-10-30 | 2021-02-02 | 京东方科技集团股份有限公司 | Light emitting device, display panel and display apparatus |
| CN113066939A (en) * | 2021-03-23 | 2021-07-02 | 合肥维信诺科技有限公司 | Display panel and display device |
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2018
- 2018-04-02 CN CN201820455013.1U patent/CN207947277U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165088A (en) * | 2019-03-12 | 2019-08-23 | 上海视涯信息科技有限公司 | A kind of preparation method of OLED device |
| CN110165088B (en) * | 2019-03-12 | 2022-03-25 | 合肥视涯技术有限公司 | Preparation method of OLED device |
| CN110323357A (en) * | 2019-07-03 | 2019-10-11 | 京东方科技集团股份有限公司 | Organic Light Emitting Diode, display panel and display device |
| CN110323357B (en) * | 2019-07-03 | 2022-04-15 | 京东方科技集团股份有限公司 | Organic light emitting diode, display panel and display device |
| CN111341820A (en) * | 2020-03-12 | 2020-06-26 | 昆山国显光电有限公司 | Display panel and display device |
| CN111341820B (en) * | 2020-03-12 | 2022-10-14 | 昆山国显光电有限公司 | Display panel and display device |
| CN112310186A (en) * | 2020-10-30 | 2021-02-02 | 京东方科技集团股份有限公司 | Light emitting device, display panel and display apparatus |
| CN113066939A (en) * | 2021-03-23 | 2021-07-02 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN113066939B (en) * | 2021-03-23 | 2022-08-02 | 合肥维信诺科技有限公司 | Display panel and display device |
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