CN108878681A - A kind of organic light emitting display panel and display device - Google Patents
A kind of organic light emitting display panel and display device Download PDFInfo
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- CN108878681A CN108878681A CN201810680042.2A CN201810680042A CN108878681A CN 108878681 A CN108878681 A CN 108878681A CN 201810680042 A CN201810680042 A CN 201810680042A CN 108878681 A CN108878681 A CN 108878681A
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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
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
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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
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Abstract
The present invention describes a kind of organic light emitting display panel and display device, and in particular to field of display technology.Organic light emitting display panel includes：Substrate, the organic luminescent device on the substrate；Positioned at the structure of polarized light of the organic luminescent device light emission side, on the organic luminescent device light direction, the structure of polarized light successively includes quarter-wave lamella, metal wire grid layer, polarisation basal layer；And far from the encapsulating structure of substrate side on the polarisation basal layer.Polaroid structure provided by the invention is designed to the laminated construction with polarisation basal layer, metal wire grid layer, quarter-wave lamella, and it is integrated in the inside of organic light emitting display panel, while reducing display panel thickness, the transmitance of short-wave band is also effectively improved.Meanwhile the light of organic luminescent device reflection enters directly into quarter-wave plate, scattering phenomenon when eliminating external, therefore polarization effect is stronger, it is bigger for the inhibiting effect of reflection of ambient light.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of organic light emitting display panel, display device.
Background technique
Existing organic light-emitting display device, when ambient light incident is to organic light emitting display panel, the gold of panel itself
The portion of incident light can be reflected by belonging to electrode, the problems such as so as to cause low, colour cast is displayed contrast.In order to eliminate ambient light to display
Influence, it usually needs polaroid is attached in organic light-emitting display device.
However, existing polaroid thickness generally can achieve 100~250 μm, it is not easy to be integrated in the interior of display panel
Portion.Domestic panel vendor, which is substantially, at present buys polaroid by outsourcing, and is attached to organic light emitting display panel
Outside.Since the polaroid of organic light emitting display panel is all monopolized by overseas enterprise, so the higher cost of polaroid.And
And the polaroid of outer patch causes partially usually due to inevitably impacting, wearing in the bad and factory of technologic contraposition
Mating plate waste, this not only adds the production costs of panel vendor, and improve the generation rate of defective products.
On the other hand, existing polaroid is relatively low in the transmitance of short-wave band, therefore in the prior art in order to guarantee
The transmitance of short-wave band light (mainly blue light), it usually needs it is enough bright to guarantee to improve the excitation energy of blue light emitting device
Degree, inevitably will increase the power consumption of panel in this way.Meanwhile when blue light emitting device is chronically at high-energy excitation state,
Device lifetime can significantly reduce.
Summary of the invention
In view of this, the present invention provides a kind of organic light emitting display panel and display device, it is inclined in the prior art to solve
The problems such as mating plate is easily damaged, at high cost, and short-wave band transmitance reduces.
On the one hand, the present invention provides a kind of organic light emitting display panel, including substrate, and the organic light emitting display panel is also
Including：Organic luminescent device on the substrate；Polarisation positioned at the organic luminescent device far from the substrate side
Structure, the structure of polarized light include quarter-wave lamella, metal wire grid layer, polarisation basal layer；And it is located at the polarisation base
Far from the encapsulating structure of substrate side on bottom.
On the other hand, the present invention provides a kind of display device, including organic light emitting display panel as described above.
Compared with prior art, the present invention at least has the advantages that one of prominent as follows：
Organic light emitting display panel provided by the invention and organic light-emitting display device are by the way that polaroid structure to be designed to
With polarisation basal layer, metal wire grid layer, quarter-wave lamella laminated construction, and be integrated in organic light emitting display face
The inside of plate also effectively improves the transmission of short-wave band while reducing display panel thickness, manufacturing cost, fraction defective
Rate reduces the power consumption of short-wave band pixel.For the application by built in structure of polarized light, the light of organic luminescent device reflection enters directly into four
/ mono- wave plate, scattering phenomenon when eliminating external, therefore polarization effect is stronger, for reflection of ambient light inhibiting effect more
Greatly.On the one hand polarisation basal layer is the substrate as metal wire grid layer, be on the other hand also to be used as metal wire grid layer and encapsulated layer
Between buffer layer.It rather than is heavy with quarter-wave plate since metal wire grid layer is using polarisation basal layer as deposition substrate
Product substrate, therefore it is possible to prevente effectively from wire grating fault position and cause show picture abnormal phenomenon.Meanwhile in order to avoid encapsulation
Abrasion of the layer to metal wire grid layer, polarisation basal layer can play good insulating effect.Meanwhile using metal wire grid layer conduct
The linear polarizer of built-in polaroid, can substantially reduce the integral thickness of structure of polarized light, at the same the convergent force of metal wire grid layer compared with
It is small, on ultrathin flexible display panel use when and display panel convergent force good compatibility.In addition, being made using metal wire grid layer
For linear polarizer, the transmitance of the light of short-wave band wavelength can also be improved, effectively improves the transmitance of blue light, therefore further mention
The high service efficiency of organic light emitting display panel.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of organic light emitting display panel provided in an embodiment of the present invention；
Fig. 2 is the stepped construction schematic diagram of organic light emitting display panel shown in Fig. 1；
Fig. 3 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Fig. 4 is another organic light emitting display panel structural schematic diagram provided in an embodiment of the present invention；
Fig. 5 is a kind of foldable display panel structural schematic diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of process flow chart for preparing wire grating provided in an embodiment of the present invention；
Fig. 7 is a kind of process flow chart of built-in polaroid provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, below in conjunction with attached drawing and implementation
The present invention will be further described for example.
It should be noted that elaborating detail in the following description to fully understand the present invention.But this hair
Bright to be different from other way described herein with a variety of and be implemented, those skilled in the art can be without prejudice in the present invention
Similar popularization is done in the case where culvert.Therefore the present invention is not limited by following public specific embodiment.
Fig. 1 is a kind of structural schematic diagram of organic light emitting display panel provided in an embodiment of the present invention；Fig. 2 is shown in Fig. 1
The stepped construction schematic diagram of organic light emitting display panel.In conjunction with Fig. 1 and Fig. 2 it is found that organic light emitting display panel 10 includes substrate
101, and the organic luminescent device 102 on substrate 101；Positioned at organic luminescent device 102 far from the substrate side
Structure of polarized light 103, and far from the encapsulated layer 104 of 101 side of substrate on structure of polarized light 103.Structure of polarized light 103 includes four
/ mono- wave plate layer 1031, metal wire grid layer 1032, polarisation basal layer 1033.
Organic luminescent device 102 includes being made of anode, cathode and the luminescent layer between anode and cathode.According to
Anode material is different with cathode material translucency, and organic light emitting display panel can be divided into top emitting and bottom emitting structure, specifically：
In emission structure at top, anode is total reflection electrode, cathode is half-reflection and half-transmission electrode；In bottom emitting structure, anode is half anti-
Half transflective electrode, cathode are total reflection electrode.It should be noted that present inventive concept, which is not only suitable for emission structure at top, is also applied for bottom
Emitting structural.
In addition, the luminescent layer of organic luminescent device includes hole injection layer, hole transmission layer, luminous material layer, electronics biography
Defeated layer, electron injecting layer etc..It, can also be including other function layer, such as prime layers according to the demand of actual panel.It needs
Bright, present inventive concept is suitable for the display panel of different luminous layer structures.
Encapsulated layer 104 according to the difference of substrate 101 and it is different.Specifically：When substrate 101 is flexible base board, encapsulated layer
104 are generally the inorganic lamination layer structure of inorganic-organic-；When substrate 101 is rigid substrates, encapsulated layer 104 is generally high temperature
The glass cement of melting.It should be noted that present inventive concept is not only suitable for flexible display panels, it is also applied for rigid display surface
Plate.
In Fig. 1 and organic light emitting display panel shown in Fig. 2,104 or more encapsulated layer (far from orientation substrate) still has
Other structures film layer, such as cover-plate glass layer 106 etc..Generally, it in display panel field, (will be directed toward below cover-plate glass layer
The direction of substrate) structure be known as structure in box, that is, belong to panel itself structure；And by it is more than cover-plate glass layer (far from substrate
Direction) structure be known as external-hanging structure, that is, belong to panel external structure.
In polaroid structure provided in an embodiment of the present invention, metal wire grid layer primarily serves the effect of linear polarizer, and four points
One of wave plate for being interchangeable to circularly polarized light and linearly polarized light.Specifically, being shown when external environmental light is irradiated to organic light emission
When showing panel, environment light is changed into linearly polarized light by metal wire grid layer, and then the linearly polarized light is after quarter-wave plate at dextrorotation
Circularly polarized light, after the reflecting electrode reflection through organic luminescent device, right-circularly polarized light becomes left circularly polarized light, this is left-handed
Circularly polarized light becomes line polarisation after again passing by quarter-wave plate, but the polarization direction polarization with metal wire grid layer just at this time
Direction is vertical, therefore can not be emitted, so as to eliminate the influence that ambient light shows organic light emitting display panel.
It continues to refer to figure 1 and 2 it is found that is set to structure of polarized light between encapsulated layer and substrate in the embodiment of the present invention, change
Sentence is talked about, and the embodiment of the present invention is that structure of polarized light is integrated in inside display panel.Polarised light passes through any one medium or boundary
Face can have scattering phenomenon, and due to the presence of scattering phenomenon, the angle for being incident upon quarter-wave plate is different, different
The optical path difference that the light of incident angle is undergone when through four/wave plate is different, therefore will cause depolarization phenomenon.This case is by polarisation
Built in piece, the light of organic luminescent device reflection enters directly into quarter-wave plate, scattering phenomenon when eliminating external, therefore
Polarization effect is stronger, bigger for the inhibiting effect of reflection of ambient light.
In polaroid structure provided in an embodiment of the present invention, on the one hand polarisation basal layer is the base as metal wire grid layer
On the other hand bottom is also as the buffer layer between metal wire grid layer and encapsulated layer.Since metal wire grid layer is with polarisation substrate
Layer is used as deposition substrate, rather than using quarter-wave plate as deposition substrate, therefore it is possible to prevente effectively from wire grating fault position and
Cause to show picture abnormal phenomenon.Meanwhile in order to avoid encapsulated layer to the abrasion of metal wire grid layer (such as glass cement encapsulate when it is high
The stress of inorganic layer is concentrated and generates diffusion and split when the scald or inorganic-organic of warm melten glass glue-inorganic thin film encapsulation
Line), polarisation basal layer can play good insulating effect.
In the embodiment of the present invention, linear polarizer using metal wire grid layer as built-in polaroid can be substantially reduced partially
The integral thickness of photo structure, while the convergent force of metal wire grid layer is smaller, when using on ultrathin flexible display panel and shows
The convergent force good compatibility of panel.
In addition, the transmitance of the light of short-wave band wavelength can also be improved as linear polarizer using metal wire grid layer.Due to
Organic light emitting display panel emits blue light using fluorescent material, and fluorescent material luminous efficiency is lower, therefore relative to phosphorus
Luminescent material luminous feux rouges and blue light, blue light emitting need more energy to excite, and traditional polaroid is in blue wave band
Transmitance very little, it is therefore desirable to which higher energy emits blue light, to further reduced making for organic light emitting display panel
Use efficiency.In the embodiment of the present invention, the transmitance of blue light can effectively improve as linear polarizer by metal wire grid layer, therefore
Further improve the service efficiency of organic light emitting display panel.
Fig. 3 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention.It is shown with Fig. 1
The main distinction of machine light emitting display panel is that the structure of polarized light 103 of organic light emitting display panel 20 further includes being located at metal wire
Metal layer of molybdenum oxide 1034 between grid layer 1032 and polarisation basal layer 10322.Since the metal of metal wire grid layer itself is anti-
Characteristic is penetrated, inevitably environment light is reflected, causes environment light to be also unpolarized structure and carries out substantive delustring
Processing has just been reflected in observer's eye, so that the black state for influencing organic light emitting display panel is shown, contrast has been caused to drop
It is low.Therefore, in the embodiment of the present invention, it is arranged before metal wire grid layer on polarisation basal layer, one layer of metal molybdenum is first set and is aoxidized
Nitride layer.Metal molybdenum oxide has the function of antireflection, and reflectivity is lower than 5%, therefore, can further eliminate wire grating
Reflection for external environmental light.
In the embodiment of the present invention, metal wire grid layer is preferably one of metallic aluminium, copper, cadmium.Metallic aluminium, copper, cadmium are not only
With good shrinkage character, also there is preferable ductility.Therefore, metal is used as using one of metallic aluminium, copper, cadmium
The material of wire-grid layer, there is no high convergency power to show the problem of impacting to flexible display panels, while can also improve can
The bending characteristic of folded flexible display panel.
Fig. 4 is another organic light emitting display panel structural schematic diagram provided in an embodiment of the present invention.As shown in figure 4, having
Machine luminescent device 102 includes emitting red light device R, green light emitting device G, blue luminescent device B, and metal wire grid layer 1032 includes
First wire grating unit 1032a corresponding with emitting red light device R, green light emitting device G, blue luminescent device B, respectively
Two wire grating unit 1032b, third wire grating unit 1032c.Wherein, the wiregrating week of third wire grating unit 1032c
The wiregrating cycle H 2 of phase H3 the wiregrating cycle H 1 less than the first wire grating unit 1032a and the second wire grating unit 1032b,
The wiregrating cycle H 1 of first wire grating unit 1032a is equal to the wiregrating cycle H 2 of the second wire grating unit 1032b.It needs
Bright, the wire grating period is equal to the width of metal wire plus the width being spaced between adjacent two metal lines item, such as Fig. 4
It is shown.
The wavelength in the wiregrating period and incident light that can reach optimal polarization effect has light, since the embodiment of the present invention provides
Organic light emitting display panel in incident light be external environment natural light.Therefore, in the case where reaching optimal polarization effect, line
Grid cycle ought to keep unified.And in embodiments of the present invention, wire grating unit corresponding for red, green, blue different colours,
The blue luminescent device corresponding wire grating period is less than emitting red light device corresponding wire grating period and green emitting
The device corresponding wire grating period.Such design is mainly accounted for from the angle for improving blue light transmitance.Because golden
When the category wiregrating period is smaller, the loss of emergent light is reduced, thereby may be ensured that the high transmittance of emergent light.It is aobvious in organic light emission
Show in panel, compared to feux rouges, green light, the transmitance of blue light is lower.The embodiment of the present invention is corresponding by reducing blue-light device
The wire grating period also ensures the hair of entire display panel different colours luminescent device while improving blue light transmitance
Light homogeneity.
The wire grating period is equal to the width of metal wire plus the width being spaced between adjacent two metal lines item.Cause
This, can change the wiregrating period by the interval of the width or adjacent two metal lines item that change metal wire.For Fig. 4
Shown in organic light emitting display panel, in order to enable the wiregrating cycle H 3 of third wire grating unit 1032c is less than the second metal
The wiregrating cycle H 1 of the wiregrating cycle H 2 of wiregrating unit 1032b and the first wire grating unit 1032a, the embodiment of the present invention are excellent
First, it is realized by changing the width being spaced between adjacent two metal lines item.It can guarantee in metal wire-grid layer 1032 in this way
Metal wire it is of same size, to guarantee the uniform intensity of metal wire in metal wire-grid layer.
Preferably, the wiregrating period of third wire grating unit is less than or equal to 100nm, and the line of third wire grating unit
Grid width is less than or equal to 20nm.
Preferably, the wiregrating height of third wire grating unit is less than or equal to 122nm.
In the above embodiment of the present invention, the material of polarisation basal layer is preferably polyimides.Because polyimides is a kind of
Flexible preferable high molecular material, when suitable for foldable display panel as shown in Figure 5, it is ensured that structure of polarized light it is curved
Roll over characteristic.
Fig. 6 is a kind of process flow chart for preparing wire grating provided in an embodiment of the present invention, and Fig. 7 is the embodiment of the present invention
A kind of process flow chart of the built-in polaroid provided.
As shown in fig. 6, wire grating is prepared on polarisation basal layer, the spin coating metal layer first on polarisation basal layer, it
Mold is removed later using mold progress nano impression, then carries out photoetching, to obtain the period by spin coating photoresist again afterwards
Property arrangement wire grating.
Specifically, for using metallic aluminium as the active metal of production wire grating, Fig. 6 provides the production of wire grating
Process：
S1：The spin coating metal Al on polarisation basal layer 1033.Spin coating can using physical deposition (such as sputter,
PVD), the modes such as chemical deposition (such as CVD, sol-gel).
S2：A layer photoresist is coated on the good surface metal Al of spin coating.
S3：It is imprinted using mold, mold is removed after coining.The mode using nano impression is imprinted, in light
Photoresist surface forms the strip photoresist of multiple nanoscale widths.
S4：Photoetching, development are carried out to the photoresist layer with multiple strip photoresists, form the Al metal of periodic arrangement
Wiregrating.
Fig. 7 is a kind of process flow chart of built-in polaroid provided in an embodiment of the present invention.Specifically：It is formed in Fig. 6
On the basis of wire grating, firstly, quarter-wave plate 1031 is pasted in metal wire grid layer by attaching mode far from partially
The side of light basal layer 1033.Because quarter-wave plate itself has side band toughness, it can be by by a quarter
The side in metal wire grid layer far from polarisation basal layer is pasted by way of attaching in the sticking side of wave plate band.
On the basis of Fig. 6 and Fig. 7 process flow, structure of polarized light shown in FIG. 1 has been formed.And polarisation shown in Fig. 3
Structure is with the concrete technology difference of structure of polarized light shown in Fig. 1, needs that one layer of metal molybdenum oxygen is first arranged on polarisation basal layer
Compound, then metal wire grid layer is set on this layer of metal molybdenum oxide, that is to say, that metal wire in structure of polarized light shown in Fig. 3
Grid layer be in production using the polarisation basal layer with metal molybdenum oxide as substrate, other processing steps with it is shown in fig. 6
S2-S4 is identical.
With reference to Fig. 7, when the structure of polarized light of formation is built into organic light emitting display panel, it is preferable that will by glue-line 106
Quarter-wave lamella and organic luminescent device are bonded far from the side of substrate.Encapsulated layer 104 can be deposited directly to polarisation base
The surface of bottom 1033.It is final to realize the built-in of structure of polarized light.
Based on the same inventive concept, the embodiment of the present application also provides a kind of display device 20, show this referring to Fig. 8, Fig. 8
Apply for a kind of structural schematic diagram of display device provided by embodiment, which includes organic light emitting display panel
10, which is organic light emitting display panel 10 provided by the embodiment of the present application.Dress is shown in the application
The embodiment for setting 20 can be found in the embodiment of above-mentioned display panel 100, and repeating place, details are not described herein again.It should be noted that
Display device 20 provided by the embodiment of the present application can be：Mobile phone, tablet computer, television set, display, laptop,
Any products or components having a display function such as Digital Frame, navigator.
As can be seen from the above embodiments beneficial effect existing for the application is：By built in structure of polarized light, organic illuminator
The light of part reflection enters directly into quarter-wave plate, scattering phenomenon when eliminating external, therefore polarization effect is stronger, for
The inhibiting effect of reflection of ambient light is bigger.On the one hand polarisation basal layer is the substrate as metal wire grid layer, be on the other hand also
As the buffer layer between metal wire grid layer and encapsulated layer.Due to metal wire grid layer be using polarisation basal layer as deposition substrate,
Rather than using quarter-wave plate as deposition substrate, therefore it is possible to prevente effectively from wire grating fault position and cause to show that picture is abnormal
Phenomenon.Meanwhile in order to avoid encapsulated layer to the abrasion of metal wire grid layer (such as glass cement encapsulate when high temperature molten glass glue scald
The stress of inorganic layer is concentrated and generates diffusion crackle when wound or the encapsulation of inorganic-organic-inorganic thin film), polarisation basal layer can be with
Play good insulating effect.Meanwhile the linear polarizer using metal wire grid layer as built-in polaroid, it can substantially reduce partially
The integral thickness of photo structure, while the convergent force of metal wire grid layer is smaller, when using on ultrathin flexible display panel and shows
The convergent force good compatibility of panel.In addition, the light of short-wave band wavelength can also be improved as linear polarizer using metal wire grid layer
Transmitance, effectively improve the transmitance of blue light, therefore further improve the service efficiency of organic light emitting display panel.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (11)
1. a kind of organic light emitting display panel, including substrate, which is characterized in that the organic light emitting display panel further includes：
Organic luminescent device on the substrate；
Far from the structure of polarized light of the substrate side on the organic luminescent device, the structure of polarized light includes a quarter
Wave plate layer, metal wire grid layer, polarisation basal layer；And
Far from the encapsulating structure of the substrate side on the polarisation basal layer.
2. organic light emitting display panel as described in claim 1, which is characterized in that the structure of polarized light further includes positioned at described
Metal layer of molybdenum oxide between metal wire grid layer and the polarisation basal layer.
3. organic light emitting display panel as described in claim 1, which is characterized in that the metal material of the metal wire grid layer is
Metallic aluminium, copper, any one in cadmium.
4. organic light emitting display panel as described in claim 1, which is characterized in that the organic luminescent device includes red hair
Optical device, green light emitting device, blue luminescent device, the metal wire grid layer include sending out respectively with emitting red light device, green
The corresponding first wire grating unit of optical device, blue luminescent device, the second wire grating unit, third wire grating unit；
Wiregrating period of the wiregrating period of the third wire grating unit less than the first wire grating unit and second gold medal
Belong to the wiregrating period of wiregrating unit.
5. organic light emitting display panel as claimed in claim 4, which is characterized in that the wiregrating of the third wire grating unit
Width is equal to the wiregrating width of the first wire grating unit and the wiregrating width of the second wire grating unit.
6. organic light emitting display panel as claimed in claim 4, which is characterized in that the wiregrating of the third wire grating unit
Period is less than or equal to 100nm, and the wiregrating width of the third wire grating unit is less than or equal to 20nm.
7. organic light emitting display panel as claimed in claim 6, which is characterized in that the wiregrating of the third wire grating unit
Height is less than or equal to 122nm.
8. organic light emitting display panel as described in claim 1, which is characterized in that the material of the polarisation basal layer is polyamides
Imines.
9. organic light emitting display panel as described in claim 1, which is characterized in that the metal wire grid layer passes through nano impression
Mode be made in the polarisation basal layer, the quarter-wave lamella is pasted on the metal wire grid layer by attaching mode
The upper side far from the polarisation basal layer.
10. organic light emitting display panel as claimed in claim 9, which is characterized in that the quarter-wave plate passes through glue-line
It is pasted on side of the organic luminescent device far from the substrate.
11. a kind of display device, including the organic light emitting display panel as described in claim 1-10.
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| CN111312913A (en) * | 2020-02-20 | 2020-06-19 | 京东方科技集团股份有限公司 | Display device |
| CN111354771A (en) * | 2020-03-10 | 2020-06-30 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN114122289A (en) * | 2021-11-15 | 2022-03-01 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN114335263A (en) * | 2021-12-30 | 2022-04-12 | 深圳市思坦科技有限公司 | LED device, manufacturing method thereof and display device |
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