CN106449703A - OLED (Organic Light Emitting Diode) display panel and fabrication method - Google Patents
OLED (Organic Light Emitting Diode) display panel and fabrication method Download PDFInfo
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- CN106449703A CN106449703A CN201610879187.6A CN201610879187A CN106449703A CN 106449703 A CN106449703 A CN 106449703A CN 201610879187 A CN201610879187 A CN 201610879187A CN 106449703 A CN106449703 A CN 106449703A
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- oled
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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
- H10K59/30—Devices specially adapted for multicolour light emission
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The invention discloses an OLED (Organic Light Emitting Diode) display panel and a fabrication method. The OLED display panel comprises a substrate, an OLED luminous device, a package layer and a light scattering layer, wherein the OLED luminous device is arranged on the substrate, the package layer is packaged outside the OLED luminous device, the OLED luminous device at least comprises a red luminous device, a green luminous device and a blue luminous device, the blue luminous device adopts an optical microcavity structure, and the light scattering layer is arranged at a light giving-out side of the blue luminous device. A blue luminous device region of the OLED display panel adopts the optimal microcavity structure, thus, the color purity and the photoelectrical performance of a blue sub-pixel are improved; meanwhile, the light scattering layer is further arranged at the light giving-out side, the light giving-out efficiency of the blue sub-pixel is further improved, namely, the photoelectrical performance and the stability of the blue sub-pixel are further improved; and meanwhile, the light scattering layer can be used for effectively scattering light emitted from the blue luminous device, and thus, the problem of a visual angle caused by the adoption of the optical microcavity structure can be effectively solved.
Description
Technical field
The present invention relates to display technology field, more particularly, to a kind of OLED display panel and manufacture method.
Background technology
With display floater towards frivolous, low energy consumption, Portable belt trend development, with organic electroluminescent LED
（OLED）Display Technique of new generation for representing receives more and more widely to be paid close attention to.Compared to LCD Display Technique, OLED has
The advantages of frivolous, low-power consumption, low driving voltage, better visual angle and contrast and faster response speed.
OLED display panel commercial applications at present, are widely used in the display neck such as mobile phone, panel computer and TV
Domain.But it still suffers from some problems, the especially problem of the chromatographic purity of blue luminescent device, performance and stability, these
Problem is the key factor limiting OLED display panel development.Have some solutions at present, such as in the blueness of display floater
Light emitting pixel area adopts optical microcavity structure, can effectively reduce the wave peak width of spectrum by microcavity effect, improves its chromatographically pure
Degree, can also effectively improve device performance and device stability, and then the performance of each sub-pixel of active balance red, green, blue simultaneously,
Improve performance and the stability of whole display floater.But being narrowed using the visual angle that meeting leads to device, as Fig. 1 institute of optical microcavity
Show, OLED luminescent device is located on substrate 10, and is packaged using encapsulated layer 20, when blue luminescent device adopts micro-cavity structure
When, for not adopting the emitting red light device of micro-cavity structure, green light emitting device, its visual angle is deteriorated, therefore thus
Aberration can be produced during different view display floater, affect display effect.
Therefore, prior art has yet to be improved and developed.
Content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of OLED display panel and making side
Method is it is intended to when in the existing OLED display panel of solution, blue subpixels adopt micro-cavity structure, its visual angle is deteriorated and leads to produce aberration
Problem with impact display effect.
Technical scheme is as follows：
A kind of OLED display panel, wherein, including：Substrate, the OLED luminescent device being located on described substrate, be packaged in described
Encapsulated layer outside OLED luminescent device and light scattering layer, described OLED luminescent device at least includes emitting red light device, green
Luminescent device and blue luminescent device, wherein, described blue luminescent device adopts optical microcavity structure, and described light scattering layer is located at
The light emission side of described blue luminescent device.
Described OLED display panel, wherein, described light scattering layer is located at encapsulated layer top or is located at described substrate base
Portion.
Described OLED display panel, wherein, described light scattering layer is the THIN COMPOSITE of inorganic optical scatter and polymer
Film.
Described OLED display panel, wherein, described inorganic optical scatter is titanium oxide, titanium dioxide, magnesium oxide, oxygen
In change zinc, silicon oxide, silicon dioxide, zirconium dioxide, ferrum oxide, copper oxide, lead oxide, manganese oxide, stannum oxide, tungsten oxide
One or more of mixture.
Described OLED display panel, wherein, described polymer is polymethyl methacrylate, polystyrene, poly- to benzene
Naphthalate or polydimethylsiloxane.
Described OLED display panel, wherein, a diameter of 20 ~ 100nm of described inorganic optical scatter.
Described OLED display panel, wherein, in described light scattering layer, the content of inorganic optical scatter is 0.5 ~ 10
wt%.
Described OLED display panel, wherein, described OLED luminescent device also includes white luminous device or yellow is sent out
Optical device.
A kind of manufacture method of OLED display panel, wherein, including：
Step A, offer one substrate；
Step B, on substrate, make OLED luminescent device, described OLED luminescent device at least includes emitting red light device, green
Luminescent device and blue luminescent device, blue luminescent device therein adopts optical microcavity structure；
Step C, OLED luminescent device is packaged；
Step D, blue luminescent device light emission side deposit light scattering layer.
The manufacture method of described OLED display panel, wherein, in described step D, makes described light by typography
Scattering layer.
Beneficial effect：The present invention adopts optical microcavity structure by the blue luminescent device region in OLED display panel,
Thus improving blue subpixels excitation, photoelectric properties, also light scattering layer being set in its light emission side simultaneously, improving blue further
The light extraction efficiency of sub-pixel, improves photoelectric properties and the stability of blue subpixels, further simultaneously because light scattering layer can
The light that effectively scattering blue luminescent device sends, thus effectively solving is because of the viewing angle problem being caused using optical microcavity structure.
Brief description
Fig. 1 is the structural representation of OLED display panel in prior art.
Fig. 2 is the structural representation of OLED display panel first embodiment in the present invention.
Fig. 3 is the structural representation of OLED display panel second embodiment in the present invention.
Fig. 4 is the flow chart of the manufacture method preferred embodiment of OLED display panel of the present invention.
Specific embodiment
The present invention provides a kind of OLED display panel and manufacture method, for making the purpose of the present invention, technical scheme and effect
Clearer, clear and definite, the present invention is described in more detail below.It should be appreciated that specific embodiment described herein is only
In order to explain the present invention, it is not intended to limit the present invention.
Refer to Fig. 2, Fig. 2 is a kind of structural representation of present invention OLED display panel first embodiment, and it includes：Base
Plate 100, be located at described substrate 100 on OLED luminescent device, the encapsulated layer 200 being packaged in outside described OLED luminescent device and
Light scattering layer 300, described OLED luminescent device at least includes emitting red light device（R）, green light emitting device（G）And blue-light-emitting
Device（B）, wherein, described blue luminescent device adopts optical microcavity structure, and described light scattering layer 300 is located at described blue-light-emitting
The light emission side of device.
In the present invention, on the one hand employ optical microcavity structure, the crest width of spectrum can be effectively reduced by microcavity effect
Degree, improves its chromatographic purity, can also effectively improve device performance and device stability simultaneously, and then active balance red, green, blue
The performance of each sub-pixel, improves performance and the stability of whole display floater, for improving excitation and the photoelectricity of blue light
Performance.On the other hand, the light emission side in blue luminescent device introduces light scattering layer 300 as light removing layer, improves further
The light extraction efficiency of blue subpixels, meanwhile, light scattering layer 300 can effectively scatter the photon of injection, thus effectively solving is blue
Sub-pixel is because of the viewing angle problem being caused using optical microcavity structure.Due to the present invention, to employ optics in blue luminescent device micro-
Cavity configuration, so also only need to arrange light scattering layer 300 in the light emission side of blue luminescent device, if in other colour light emitting devices
Part also uses optical microcavity structure, then also accordingly arrange light scattering layer 300 in the light emission side of other colour light emitting devices.
On described substrate 100, there is tft array, for driving OLED luminescent device.
The OLED luminescent device of the present embodiment at least includes red, green, blue three-colour light-emitting device, certainly can also include white
Luminescent device or Yellow luminous device, that is, constitute red, green, blue, Bai Sise luminescent device, or red, yellow, green, blue four color and send out
Optical device.
Encapsulated layer 200 in the present embodiment is used for sealing whole OLED luminescent device, prevents the water oxygen of external environment from penetrating into,
Impact device stability.
Further, described light scattering layer 300 is located at encapsulated layer 200 top or is located at described substrate 100 bottom.Namely
Say, the OLED display panel of the present invention can be bottom emitting structure as shown in Figure 2 or top emitting as shown in Figure 3
Structure.In fig. 2, because light emission side is located at substrate 100 bottom, so described light scattering layer 300 is arranged at described substrate 100
Bottom, in figure 3, because light emission side is located at encapsulated layer 200 top, so described light scattering layer 300 is arranged at encapsulated layer 200
Top.Described light scattering layer 300 is prepared by typography, such that it is able to the light emission side of accurate deposition to blue luminescent device.
Described light scattering layer 300 is the laminated film of inorganic optical scatter and polymer.The use one of light scattering layer 300
Aspect can improve the light extraction efficiency of blue luminescent device further, on the other hand, because optical scatter can be effective simultaneously
Solve the viewing angle problem that blue luminescent device is caused using optical microcavity structure, and then solve whole OLED display panel because of visual angle
The colour cast problem causing.
Wherein, described inorganic optical scatter is titanium oxide, titanium dioxide, magnesium oxide, zinc oxide, silicon oxide, titanium dioxide
The mixture of one or more of silicon, zirconium dioxide, ferrum oxide, copper oxide, lead oxide, manganese oxide, stannum oxide, tungsten oxide.
Further, described polymer is polymethyl methacrylate（PMMA）, polystyrene（PS）, poly terephthalic acid second
Diol ester（PET）Or polydimethylsiloxane（PDMS）Deng high light transmittance thermoplastic polymer.
Further, described inorganic optical scatter a diameter of 20 ~ 100nm, such as 50nm, described inorganic optical scatter
Diameter is conducive to expanding scattering angle, and homogenous diffusion photon.In described light scattering layer, the content of inorganic optical scatter is 0.5
~ 10 wt%, such as 3 wt%, under above-mentioned content, light extraction efficiency is higher, and evenly can scatter photon to surrounding.
The present invention also provides a kind of manufacture method of OLED display panel, as shown in figure 4, it includes：
Step S1, offer one substrate；
Wherein, substrate has tft array, for driving OLED luminescent device；
Step S2, on substrate, make OLED luminescent device, described OLED luminescent device at least includes emitting red light device, green
Luminescent device and blue luminescent device, blue luminescent device therein adopts optical microcavity structure；
Step S3, OLED luminescent device is packaged；Specifically make encapsulated layer to be packaged, permissible using described encapsulated layer
Effectively seal whole OLED luminescent device, prevent the water oxygen of external environment from penetrating into, affect device stability.
Step S4, blue luminescent device light emission side deposit light scattering layer.
Light scattering layer therein can be in encapsulated layer top or be located at described base plate bottom, with specific reference to OLED face
Plate belongs to bottom emitting or top emitting to determine.
Further, in described step S4, described light scattering layer is made by typography.Using typography preparation, can
With accurate deposition to blue luminescent device region.
In sum, the present invention adopts optical microcavity structure by the blue luminescent device region in OLED display panel,
Thus improving blue subpixels excitation, photoelectric properties, also light scattering layer being set in its light emission side simultaneously, improving blue further
The light extraction efficiency of sub-pixel, improves photoelectric properties and the stability of blue subpixels, further simultaneously because light scattering layer can
The light that effectively scattering blue luminescent device sends, thus effectively solving is because of the viewing angle problem being caused using optical microcavity structure.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved according to the above description or to convert, all these modifications and variations all should belong to the guarantor of claims of the present invention
Shield scope.
Claims (10)
1. a kind of OLED display panel is it is characterised in that include：Substrate, the OLED luminescent device being located on described substrate, encapsulation
Encapsulated layer outside described OLED luminescent device and light scattering layer, described OLED luminescent device at least includes emitting red light device
Part, green light emitting device and blue luminescent device, wherein, described blue luminescent device adopts optical microcavity structure, and described light dissipates
Penetrate the light emission side that layer is located at described blue luminescent device.
2. OLED display panel according to claim 1 it is characterised in that described light scattering layer be located at encapsulated layer top or
Person is located at described base plate bottom.
3. OLED display panel according to claim 1 is it is characterised in that described light scattering layer is inorganic optical scatter
Laminated film with polymer.
4. OLED display panel according to claim 3 it is characterised in that described inorganic optical scatter be titanium oxide,
Titanium dioxide, magnesium oxide, zinc oxide, silicon oxide, silicon dioxide, zirconium dioxide, ferrum oxide, copper oxide, lead oxide, manganese oxide,
The mixture of one or more of stannum oxide, tungsten oxide.
5. OLED display panel according to claim 3 is it is characterised in that described polymer is poly-methyl methacrylate
Ester, polystyrene, polyethylene terephthalate or polydimethylsiloxane.
6. OLED display panel according to claim 3 it is characterised in that described inorganic optical scatter a diameter of 20 ~
100nm.
7. OLED display panel according to claim 3 is it is characterised in that inorganic optical scatter in described light scattering layer
Content be 0.5 ~ 10 wt%.
8. OLED display panel according to claim 1 is it is characterised in that described OLED luminescent device also includes white
Optical device or Yellow luminous device.
9. a kind of manufacture method of OLED display panel is it is characterised in that include：
Step A, offer one substrate；
Step B, on substrate, make OLED luminescent device, described OLED luminescent device at least includes emitting red light device, green
Luminescent device and blue luminescent device, blue luminescent device therein adopts optical microcavity structure；
Step C, OLED luminescent device is packaged；
Step D, blue luminescent device light emission side deposit light scattering layer.
10. the manufacture method of OLED display panel according to claim 9 is it is characterised in that in described step D, pass through
Typography makes described light scattering layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610879187.6A CN106449703A (en) | 2016-10-09 | 2016-10-09 | OLED (Organic Light Emitting Diode) display panel and fabrication method |
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| CN201610879187.6A CN106449703A (en) | 2016-10-09 | 2016-10-09 | OLED (Organic Light Emitting Diode) display panel and fabrication method |
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Cited By (5)
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| CN109690808A (en) * | 2018-12-05 | 2019-04-26 | 京东方科技集团股份有限公司 | Light emitting diode and its manufacturing method, display base plate and display panel |
| CN109962059A (en) * | 2017-12-14 | 2019-07-02 | 宏齐科技股份有限公司 | Show equipment and its light source module |
| CN110277509A (en) * | 2019-06-24 | 2019-09-24 | 昆山国显光电有限公司 | A kind of display panel and display device |
| CN110690357A (en) * | 2019-09-04 | 2020-01-14 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN115528532A (en) * | 2022-09-16 | 2022-12-27 | 深圳市佑明光电有限公司 | Combined white light laser light source module based on diode and fluorescent powder film |
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| CN115528532A (en) * | 2022-09-16 | 2022-12-27 | 深圳市佑明光电有限公司 | Combined white light laser light source module based on diode and fluorescent powder film |
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Application publication date: 20170222 |