CN110311047A - A kind of display panel and display device - Google Patents
A kind of display panel and display device Download PDFInfo
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- CN110311047A CN110311047A CN201910576455.0A CN201910576455A CN110311047A CN 110311047 A CN110311047 A CN 110311047A CN 201910576455 A CN201910576455 A CN 201910576455A CN 110311047 A CN110311047 A CN 110311047A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/12—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising dopants
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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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
Abstract
The invention discloses a kind of display panel and display devices, wherein display panel includes: substrate；First electrode layer is set to the side of the substrate；The second electrode lay is set to side of the first electrode layer far from the substrate；Luminescent layer is set between the first electrode layer and the second electrode lay；The luminescent layer includes the red light-emitting unit, green luminescence unit and blue light emitting unit of array arrangement；The material of the blue light emitting unit includes the yellow fluorescent material doped with rare earth element.The present invention provides a kind of display panel and display devices, and the blue emitting material service life to solve the problems, such as existing organic light emitting display panel is short.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of display panel and display devices.
Background technique
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED), refers to luminescent material in electric field
Under driving, pass through the device of carrier injection and composite guide photoluminescence.In the manufacturing process of organic light emitting display panel, often
Need red, three kinds of colors of green and blue luminescent material illuminated in combination.
But in luminescent material luminescence process, blue emitting material luminous efficiency is low and the service life is short, leads to organic hair
Light display panel service life reduction.
Summary of the invention
The embodiment of the invention provides a kind of display panel and display devices, to solve existing organic light emitting display panel
Blue emitting material service life short problem.
In a first aspect, the embodiment of the invention provides a kind of display panels, comprising:
Substrate；
First electrode layer is set to the side of the substrate；
The second electrode lay is set to side of the first electrode layer far from the substrate；
Luminescent layer is set between the first electrode layer and the second electrode lay；The luminescent layer includes array row
Red light-emitting unit, green luminescence unit and the blue light emitting unit of cloth；The material of the blue light emitting unit includes doping
There is the yellow fluorescent material of rare earth element.The yellow that the luminescent material setting of blue light emitting unit is excited by rare element is glimmering
Luminescent material so that yellow fluorescent material can either issue blue light, and can be avoided blue fluorescent material service life shorter problem.
Optionally, the material of the red light-emitting unit includes red fluorescence material or red phosphorescence material；The green light
The material of luminescence unit includes green fluorescent material or green phosphorescent material.Only set the luminescent material of blue light emitting unit to
Make doped with the yellow fluorescent material of rare earth element without the luminescent material of change red light-emitting unit and green luminescence unit
Obtaining red light-emitting unit and green luminescence unit can be still deposited using existing evaporated device and evaporation process, and display surface is enhanced
The versatility of plate preparation.
Optionally, the material of the red light-emitting unit and the material of green luminescence unit include doped with rare earth element
Yellow fluorescent material.The luminescent material of red light-emitting unit, green luminescence unit and blue-light-emitting unit is disposed as Huang
Color fluorescent material can save process costs so that a set of evaporated device can be used in each colour light emitting unit during vapor deposition.
Optionally, the material of the blue light emitting unit includes doped with Ce3+Yellow fluorescent powder Y3Al5O12, the indigo plant
The yellow fluorescent powder Y of light luminescence unit3Al5O12Middle Ce3+Quality accounting range be 0.035~0.045.Work as yellow fluorescent powder
Y3Al5O12In Ce3+Doping ratio difference when, the light of the capable of emitting different colours of yellow fluorescent powder works as yellow fluorescent powder
Y3Al5O12Middle Ce3+The range of quality accounting when being 0.035~0.045, the suitable blue light of capable of emitting wave-length coverage, for showing
Show that the image of panel is shown.
Optionally, the material of the red light-emitting unit includes doped with Ce3+Yellow fluorescent powder Y3Al5O12, described red
The yellow fluorescent powder Y of light luminescence unit3Al5O12Middle Ce3+Quality accounting range be 0.023~0.027；The green luminescence
The material of unit includes doped with Ce3+Yellow fluorescent powder Y3Al5O12, the yellow fluorescent powder of the green luminescence unit
Y3Al5O12Middle Ce3+Quality accounting range be 0.028~0.032.As yellow fluorescent powder Y3Al5O12In Ce3+Doping ratio
When example is different, the light of the capable of emitting different colours of yellow fluorescent powder, then red light-emitting unit, green luminescence unit and blue light emitting
A set of evaporated device can be used in unit, and by Ce3+Evaporation rate control, respectively vapor deposition doping different proportion Ce3+It is yellow
Color fluorescent powder, to form red light-emitting unit, green luminescence unit and blue light emitting unit, manufacture craft is simple, process costs
It reduces.
Optionally, the display panel further include: colored filter is set to the second electrode far from the substrate
Side；The colored filter includes the red color resistance block, green color blocking block and blue color blocking block of array arrangement；The red color
Stop block is arranged in a one-to-one correspondence with the red light-emitting unit, and the green color blocking block is set with green luminescence unit one-to-one correspondence
It sets, the blue color blocking block is arranged in a one-to-one correspondence with the blue light emitting unit；On the direction perpendicular to the display panel,
The red color resistance block is overlapped with the corresponding red light-emitting unit, the green color blocking block and the corresponding green luminescence
Unit is overlapped, and the blue color blocking block is overlapped with the corresponding blue light emitting unit.In yellow fluorescent material and rare earth element
Vapor deposition during because the error of equipment or technique makes the light that the yellow fluorescent material doped with rare earth element issues
The purity of color is lower, then colored filter is arranged in the outside of the second electrode of display panel, so that yellow fluorescent material turns
The optical purity of the light changed is higher.
Optionally, the display panel further include: encapsulated layer, the encapsulated layer are set to the second electrode and the coloured silk
Between colo(u)r filter.First electrode layer, luminescent layer and the second electrode lay form luminescent device, and one layer of envelope is covered on luminescent device
Layer is filled, can prevent water oxygen from protecting to the erosion of luminescent device to display panel.
Optionally, the display panel further include: the first functional layer is set to the first electrode layer and the luminescent layer
Between；Second functional layer is set between the luminescent layer and the second electrode lay；Second functional layer includes at least the
One type barrier layer, the first kind barrier layer attach the luminescent layer setting；The first kind is cavity type or electricity
Subtype.First functional layer and the second functional layer can respectively include implanted layer and transport layer of cavity type or electron type etc., convenient for sky
Cave and electron-transport enhance the luminous efficiency of each luminescence unit to luminescent layer, and the second functional layer may be provided with cavity type or
The barrier layer of electron type, for preventing the carrier of luminescent layer to be spilled over to the second electrode lay, to further enhance each luminous list
The luminous efficiency of member.
Optionally, red light-emitting unit, green luminescence unit and blue light emitting unit pass through vacuum evaporation process respectively
It is formed.Successively emitting red light unit, green luminescence unit and blue light emitting unit can be deposited, if red light-emitting list
The luminescent material of member, green luminescence unit and blue light emitting unit is the yellow fluorescent powder doped with rare earth element, then exists
During being successively deposited, it is only necessary to regulate and control the vapor deposition ratio of rare earth element, so that successively each colour light emitting unit is deposited,
During vapor deposition, replacement evaporation material and evaporated device are not needed, to reach the effect for saving operating cost and equipment cost
Fruit.
Second aspect, the embodiment of the invention also provides a kind of display device, the display equipment includes that the present invention is any
The display panel that embodiment provides.
Display panel in the present invention forms first electrode layer, luminescent layer and the second electrode lay in the side of substrate, so that
First electrode layer, luminescent layer and the second electrode lay constitute luminescent device, and luminescent layer includes the red light-emitting unit, green of array arrangement
Light luminescence unit and blue light emitting unit, each colour light emitting unit includes luminescent material, in first electrode layer and second
Under the action of voltage difference between electrode layer, the light of corresponding color is issued respectively.Wherein, the material of blue light emitting unit includes mixing
The miscellaneous yellow fluorescent material for having rare earth element can issue blue light doped with the yellow fluorescent material of rare earth element, then blue light is sent out
Light unit is not required to setting blue fluorescent material, to prevent the problem that blue fluorescent material luminous efficiency is low and the service life is short, and has
Effect increases the service life of display panel.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another display panel provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another display panel provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
In the preparation process of display panel, need feux rouges, blue light and green light illuminated in combination to show image.Ordinary circumstance
Under, it is luminous that the light of corresponding color needs the luminescent material of corresponding color to carry out, for example, blue light is issued by blue emitting material,
Feux rouges needs to issue by red illuminating material, and green light needs to issue by green luminescent material.Wherein, green luminescent material and
The luminous efficiency of red illuminating material is higher, lasts a long time, and can satisfy the demand of user, but blue emitting material is luminous
Efficiency is lower, so that organic light emitting display panel bulk life time reduces, in order to solve the above technical problems, this application provides as follows
Solution:
The embodiment of the invention provides a kind of display panel, Fig. 1 is a kind of display panel provided in an embodiment of the present invention
Structural schematic diagram, as shown in Figure 1, display panel 1 includes:
Substrate 11；
First electrode layer 12 is set to the side of substrate 11；
The second electrode lay 13 is set to side of the first electrode layer 12 far from substrate 11；
Luminescent layer 14 is set between first electrode layer 12 and the second electrode lay 13；Luminescent layer 14 includes array arrangement
Red light-emitting unit 141, green luminescence unit 142 and blue light emitting unit 143；The material of blue light emitting unit 143 includes
Doped with the yellow fluorescent material of rare earth element.
Substrate 11 is array substrate, including the drive circuit layer formed on substrate and substrate, first electrode layer 12, luminescent layer
14 and the second electrode lay 13 form organic luminescent device, drive circuit layer can drive organic luminescent device to issue different colours
Light, so that display panel shows image frame.
Luminescent layer 14 includes multiple luminescence units of array arrangement, and luminescence unit includes red light-emitting unit 141, green light hair
Light unit 142 and blue light emitting unit 143, optionally, luminescent layer 14 may include the luminescence unit group of multiple array arrangements,
Each luminescence unit group includes red light-emitting unit 141, green luminescence unit 142 and blue light emitting unit 143.Wherein,
The material of blue light emitting unit 143 includes the yellow fluorescent material doped with rare earth element.With being adulterated in yellow fluorescent material
Rare earth element ratio variation, the light of the capable of emitting different colours of yellow fluorescent material.By shining for blue light emitting unit 143
Material is set as the yellow fluorescent material doped with rare earth element, and the accounting by adjusting rare earth element may make yellow fluorescence material
Material issues blue light, then it is then not in blue emitting material that blue light emitting unit 143, which is not needed using blue emitting material is arrived,
The problem that luminous efficiency is low and the service life is low fundamentally improves organic to will not influence the image display effect of entire panel
The service life of luminescent device or even entire display panel.
In addition, various new blue emitting material is developed if setting about from blue emitting material itself, for example, blue light phosphorus
The blue emitting materials such as luminescent material, efficient delayed fluorescence, New blue luminescent material only can carry out 10~15 to blue lifetime
Extension.Relative to New blue luminescent material, the yellow fluorescent material provided in an embodiment of the present invention doped with rare earth element
Blue emitting material luminous efficiency can be avoided completely low, service life short drawback fundamentally solves display surface in the prior art
The short problem of the blue lifetime of plate.
Display panel in the embodiment of the present invention forms first electrode layer, luminescent layer and second electrode in the side of substrate
Layer, so that first electrode layer, luminescent layer and the second electrode lay constitute luminescent device, luminescent layer includes the red light-emitting of array arrangement
Unit, green luminescence unit and blue light emitting unit, each colour light emitting unit includes luminescent material, in first electrode layer
Under the action of voltage difference between the second electrode lay, the light of corresponding color is issued respectively.Wherein, the material of blue light emitting unit
Including the yellow fluorescent material doped with rare earth element, blue light can be issued doped with the yellow fluorescent material of rare earth element, then
Blue light emitting unit is not required to setting blue fluorescent material, to prevent that blue fluorescent material luminous efficiency is low and the service life short asks
Topic, and effectively increase the service life of display panel.
Optionally, red light-emitting unit 141, green luminescence unit 142 and blue light emitting unit 143 can be respectively by true
Empty evaporation process is formed, for example, emitting red light unit 141 is deposited by fine mask version first, then by finely covering
Green emitting unit 142 is deposited in film version, and blue light emitting unit 143 is deposited finally by fine mask version.It is aobvious
The first electrode layer 12 and the second electrode lay 13 for showing panel can be by vapour deposition method, sputtering method, vapour deposition process, ion beam depositings
Method, means of electron beam deposition or laser ablation method are formed.
Optionally, it continues to refer to figure 1, the material of blue light emitting unit 143 includes doped with Ce3+Yellow fluorescent powder
Y3Al5O12, the yellow fluorescent powder Y of blue light emitting unit 1433Al5O12Middle Ce3+Quality accounting range be 0.035~
0.045.Rare earth element is Ce in the present embodiment3+, yellow fluorescent material is yellow fluorescent powder Y3Al5O12, work as yellow fluorescent powder
Y3Al5O12In Ce3+Doping ratio difference when, the light of the capable of emitting different colours of yellow fluorescent powder works as yellow fluorescent powder
Y3Al5O12Middle Ce3+Quality accounting range be 0.035~0.045 when, doped with Ce3+Yellow fluorescent powder Y3Al5O12It can
Under the action of voltage between first electrode layer 12 and the second electrode lay 13, the suitable blue light of wave-length coverage is issued, for showing
Show that the image of panel is shown.
In the present embodiment, yellow fluorescent material is not limited to yellow fluorescent powder Y3Al5O12, rare earth element is not limited to Ce3+,
If other can be under voltage or ultraviolet light, by adjusting rare earth element doped with the yellow fluorescent material of rare earth element
The mode of quality accounting issues the light of the different colours such as including blue light, then should also fit doped with the yellow fluorescent material of rare earth element
The formation of blue light emitting unit for the present embodiment.
Optionally, the material of red light-emitting unit 141 may include red fluorescence material or red phosphorescence material；Green light hair
The material of light unit 142 may include green fluorescent material or green phosphorescent material.The present embodiment is only by blue light emitting unit 143
Luminescent material be set as the yellow fluorescent material doped with rare earth element, to solve the problems, such as that the blue emitting material service life is short,
The service life of red illuminating material and green luminescent material can satisfy the needs of user, then can not change red light-emitting unit 141
With the luminescent material of green luminescence unit 142, red fluorescence material or red is set by the luminescent material of red light-emitting unit 141
The luminescent material of green luminescence unit 142 is set green fluorescent material or green phosphorescent material by color phosphor material.So that red
Light luminescence unit 141 and green luminescence unit 142 are still deposited using existing evaporation process and evaporated device, this implementation is enhanced
The versatility of display panel manufacture craft in example.
Optionally, the luminescent material of red light-emitting unit 141 can be red phosphorescence material PQIr (three (1- phenylchinolines)
Iridium), the luminescent material of green luminescence unit 142 can be green phosphorescent material Ir (ppy) 3 (three (2- phenylpyridines) close iridium).
Optionally, the material of the material of red light-emitting unit 141 and green luminescence unit 142 includes doped with rare earth member
The yellow fluorescent material of element.Certainly, in addition to setting the luminescent material of blue light emitting unit 143 to the Huang doped with rare earth element
Color fluorescent material, can also be by red light-emitting unit 141, the luminescent material of green luminescence unit 142 and blue light emitting unit 143
It is disposed as the yellow fluorescent material doped with rare earth element, and yellow fluorescent material is adulterated in the luminescence unit of different colours
The ratio of rare earth element is different.Red light-emitting unit 141, green luminescence unit 142 and blue light emitting unit are then being deposited respectively
When 143, it is only necessary to a set of evaporated device that yellow fluorescent material and rare earth element can be deposited simultaneously, in shining for different colours
During the vapor deposition of unit, control rare earth element is deposited according to different evaporation rates.Luminescent layer 14 is deposited in this implementation
A set of evaporated device is only needed, the equipment cost and process costs of vapor deposition are reduced.And evaporated device in the prior art needs three
Evaporated device is covered, for red illuminating material, green luminescent material and blue emitting material to be deposited respectively, equipment disappears
Consume higher cost.
Optionally, the material of red light-emitting unit 141 may include doped with Ce3+Yellow fluorescent powder Y3Al5O12, feux rouges
The yellow fluorescent powder Y of luminescence unit 1413Al5O12Middle Ce3+Quality accounting may range from 0.023~0.027；Green light hair
The material of light unit 142 may include doped with Ce3+Yellow fluorescent powder Y3Al5O12, the yellow fluorescence of green luminescence unit 142
Powder Y3Al5O12Middle Ce3+Quality accounting may range from 0.028~0.032.As yellow fluorescent powder Y3Al5O12In Ce3+'s
When doping ratio difference, the light of the capable of emitting different colours of yellow fluorescent powder, as yellow fluorescent powder Y3Al5O12Middle Ce3+Quality
When the range of accounting is 0.023~0.027, doped with Ce3+Yellow fluorescent powder Y3Al5O12It can be in first electrode layer 12 and
Under the action of voltage between two electrode layers 13, the suitable feux rouges of wave-length coverage is issued, as yellow fluorescent powder Y3Al5O12Middle Ce3+
Quality accounting range be 0.028~0.032 when, doped with Ce3+Yellow fluorescent powder Y3Al5O12It can be in first electrode layer
Under the action of voltage between 12 and the second electrode lay 13, the suitable green light of wave-length coverage is issued.Then red light-emitting unit 141,
A set of evaporated device can be used in green luminescence unit 142 and blue light emitting unit 143, and by Ce3+Evaporation rate control
System, vapor deposition adulterates different proportion Ce respectively3+Yellow fluorescent powder, to form red light-emitting unit, green luminescence unit and blue light hair
Light unit, manufacture craft is simple, and process costs reduce.
It is worth noting that, the red illuminating material for including in each luminescence unit, green luminescent material and doped with dilute
The yellow fluorescent material of earth elements is the luminescent material in the material of each luminescence unit, and the material of each luminescence unit can not
Only include luminescent material, can also include the higher material of main part of accounting.The then material packet of each luminescence unit in the present embodiment
Include material of main part and the luminescent material as guest materials.Optionally, the volume ratio of guest materials and material of main part can be
1:8~1:20.Optionally, luminescence unit may include one or two kinds of material of main parts.Illustratively, blue-light-emitting unit 143
Material of main part can be diphenylethyllene benzene (CBP), and the material of main part of green emitting unit 142 can be diphenylethyllene benzene
(CBP) and 1,3- bis- (carbazole -9- base) (mCP).
It optionally, is the structural schematic diagram of another display panel provided in an embodiment of the present invention, display with reference to Fig. 2, Fig. 2
Panel 1 can also include: colored filter 15, be set to side of the second electrode 13 far from substrate 11；Colored filter 15 wraps
Include the red color resistance block 151, green color blocking block 152 and blue color blocking block 153 of array arrangement；Red color resistance block 151 and feux rouges are sent out
Light unit 141 is arranged in a one-to-one correspondence, and green color blocking block 152 is arranged in a one-to-one correspondence with green luminescence unit 142, blue color blocking block
153 are arranged in a one-to-one correspondence with blue light emitting unit 143；On the direction perpendicular to display panel 1, red color resistance block 151 with it is right
The red light-emitting unit 141 answered projection on the substrate is overlapped, green color blocking block 152 and corresponding green luminescence unit
142 projections on the substrate are overlapped, and blue color blocking block 153 and corresponding blue light emitting unit 143 are on the substrate
Projection is overlapped.
When preparing the luminescence unit of each color, in yellow fluorescent material rare earth element doping ratio can because equipment,
The factors such as technique and environment are affected.For example, when setting doping ratio of the rare earth element in yellow fluorescent material is 0.03,
Then practical doping range may reach 0.0295, cause the light issued to have certain deviation, for example, may be mixed into green light
The wave band of yellow light or green light changes, these phenomenons cause Display panel effect poor.The present embodiment is in the second electricity
Pole 13 may be provided with colored filter 15 far from the side of substrate 11, setting and red light-emitting unit 141 on colored filter 15
One-to-one red color resistance block 151, the interference light of other colors for filtering out the generation of red light-emitting unit 141, makes feux rouges
Optical purity it is higher, similarly, colored filter 15 be additionally provided with green luminescence unit 142 correspond green color blocking block 152,
For filtering out the interference light of other colors of the generation of green luminescence unit 142, colored filter 15 is additionally provided with and blue light emitting
Unit 143 corresponds blue color blocking block 153, the interference light of other colors for filtering out the generation of blue light emitting unit 143, from
And the optical purity for the feux rouges, green light and blue light for converting yellow fluorescent material.
Optionally, on the direction perpendicular to display panel 1, red color resistance block 151 and corresponding red light-emitting unit 141
Projection on the substrate is overlapped, projection of the green color blocking block 152 with corresponding green luminescence unit 142 on the substrate
It is overlapped, blue color blocking block 153 is overlapped with the projection of corresponding blue light emitting unit 143 on the substrate, and colorized optical filtering
It is additionally provided with black color blocking area 154 between the colored color blocking block of two neighboring different colours on piece 15, for example, red color resistance block
May be provided with black color blocking area 154 between 151 and green color blocking block 152, for each colour light emitting unit to display panel it
Between non-luminous region blocked.
It optionally, is the structural schematic diagram of another display panel provided in an embodiment of the present invention with reference to Fig. 3, Fig. 3, display
Panel 1 can also include: the first functional layer 16, be set between first electrode layer 12 and luminescent layer 14；Second functional layer 17, if
It is placed between luminescent layer 14 and the second electrode lay 13；Second functional layer 17 includes at least first kind barrier layer 173, the first kind
Barrier layer 173 attaches luminescent layer 14 and is arranged；The first kind is cavity type or electron type.
First functional layer 12 and the second functional layer 17 are the carrier transports such as assist holes or electronics to luminescent layer 14
Functional layer.For example, the second electrode lay 13 is cathode, then the first functional layer 16 may include sky if first electrode layer 12 is anode
The structure sheafs such as cave implanted layer 162 and hole transmission layer 161, the second functional layer 17 may include electron transfer layer 172 and electronics note
Enter the structure sheafs such as layer 171, in addition, the hole in luminescent layer 14 is spilled over to cathode side in order to prevent, it can be in 172 He of electron transfer layer
First kind barrier layer 173 is set between luminescent layer 14, and in this example, first kind barrier layer 173 is cavity type barrier layer, together
Reason, can be between hole transmission layer 161 and luminescent layer 14 if the electronics in luminescent layer 14 is spilled over to anode-side in order to prevent
Second Type barrier layer is set, and Second Type barrier layer is electron type barrier layer.
In another example, if first electrode layer 12 is cathode, the second electrode lay 13 is anode, then the first functional layer 16 can
To include the structure sheafs such as electron injecting layer and electron transfer layer, the second functional layer 17 may include hole transmission layer and hole injection
The structure sheafs such as layer, in addition, the electronics in luminescent layer 14 is spilled over to anode-side in order to prevent, can hole transmission layer and luminescent layer it
Between first kind barrier layer is set, in this example, first kind barrier layer is that electron type barrier layer similarly can also be in electronics
Second Type barrier layer is set between transport layer and luminescent layer, and Second Type barrier layer is cavity type barrier layer.
Optionally, the material of first electrode layer 12 is indium tin oxide, and the material of hole injection layer is N,-two -1- naphthalene of N ' -
N, N '-diphenylbenzidine (NPB), the material of hole transmission layer are 4,4 ', 4 "-three -9- carbazyl triphenylamines (TCTA), and electronics passes
The material of defeated layer is 1,3,5- tri- (one benzimidazolyl-2 radicals of 1- phenyl -1H-yl) benzene (TPBi), and the material of electron injecting layer is three quinolines
Beautiful jade aluminium (Alq3), the second electrode lay 13 are the alloy material of silver or silver.
Optionally, with continued reference to Fig. 3, display panel 1 can also include: encapsulated layer 18, and encapsulated layer 18 is set to the second electricity
Between pole 13 and colored filter 15.Encapsulated layer 18 is used for second electrode 13, the second functional layer 17, luminescent layer 14, the first function
The organic luminescent device that ergosphere 16 and first electrode 12 are formed is protected, and prevents water oxygen invasion from destroying organic luminescent device,
Especially prevent water oxygen from generating damage to the material of luminescent layer 14.
Optionally, above-mentioned encapsulated layer 18 can be thin-film encapsulation layer, organic material layer and nothing including multiple-level stack setting
Machine material layer, thin-film encapsulation layer are suitble to the encapsulation of organic light emitting display panel ultra-thin and flexible；Encapsulated layer 18 can also be glass
Glass encapsulated layer, the material of glass-encapsulated layer are the mixture of the materials such as glass powder, filler and adhesive, glass-encapsulated layer intensity
It is higher, suitable for shielding firmly, the encapsulation of small size display panel.
The embodiment of the present invention also provides a kind of display device.Fig. 4 is a kind of display device provided in an embodiment of the present invention
Structural schematic diagram, as shown in figure 4, display device provided in an embodiment of the present invention includes the display that any embodiment of that present invention provides
Panel 1.Electronic equipment can be mobile phone as shown in Figure 4, or computer, television set, intelligent wearable device etc., this reality
It applies example and this is not particularly limited.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of display panel characterized by comprising
Substrate；
First electrode layer is set to the side of the substrate；
The second electrode lay is set to side of the first electrode layer far from the substrate；
Luminescent layer is set between the first electrode layer and the second electrode lay；The luminescent layer includes array arrangement
Red light-emitting unit, green luminescence unit and blue light emitting unit；The material of the blue light emitting unit includes doped with dilute
The yellow fluorescent material of earth elements.
2. display panel according to claim 1, which is characterized in that
The material of the red light-emitting unit includes red fluorescence material or red phosphorescence material；The material of the green luminescence unit
Material includes green fluorescent material or green phosphorescent material.
3. display panel according to claim 1, which is characterized in that
The material of the red light-emitting unit and the material of green luminescence unit include the yellow fluorescence doped with rare earth element
Material.
4. display panel according to claim 1, which is characterized in that
The material of the blue light emitting unit includes doped with Ce3+Yellow fluorescent powder Y3Al5O12, the blue light emitting unit
Yellow fluorescent powder Y3Al5O12Middle Ce3+Quality accounting range be 0.035~0.045.
5. display panel according to claim 4, which is characterized in that
The material of the red light-emitting unit includes doped with Ce3+Yellow fluorescent powder Y3Al5O12, the red light-emitting unit
Yellow fluorescent powder Y3Al5O12Middle Ce3+Quality accounting range be 0.023~0.027；
The material of the green luminescence unit includes doped with Ce3+Yellow fluorescent powder Y3Al5O12, the green luminescence unit
Yellow fluorescent powder Y3Al5O12Middle Ce3+Quality accounting range be 0.028~0.032.
6. display panel according to claim 1, which is characterized in that further include:
Colored filter is set to side of the second electrode far from the substrate；The colored filter includes array row
Red color resistance block, green color blocking block and the blue color blocking block of cloth；The red color resistance block and the red light-emitting unit one are a pair of
It should be arranged, the green color blocking block is arranged in a one-to-one correspondence with the green luminescence unit, the blue color blocking block and the blue light
Luminescence unit is arranged in a one-to-one correspondence；
On the direction perpendicular to the display panel, the red color resistance block is with the corresponding red light-emitting unit described
Projection on substrate is overlapped, projection weight of the green color blocking block with the corresponding green luminescence unit on the substrate
It closes, the blue color blocking block is overlapped with the projection of the corresponding blue light emitting unit on the substrate.
7. display panel according to claim 6, which is characterized in that further include:
Encapsulated layer, the encapsulated layer are set between the second electrode and the colored filter.
8. display panel according to claim 1, which is characterized in that further include:
First functional layer is set between the first electrode layer and the luminescent layer；
Second functional layer is set between the luminescent layer and the second electrode lay；
Second functional layer includes at least first kind barrier layer, and the first kind barrier layer attaches the luminescent layer and sets
It sets；The first kind is cavity type or electron type.
9. display panel according to claim 1, which is characterized in that
Red light-emitting unit, green luminescence unit and blue light emitting unit are formed by vacuum evaporation process respectively.
10. a kind of display device, which is characterized in that including the described in any item display panels of the claims 1-9.
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Application publication date: 20191008 |