CN110246880A - The preparation method and display panel of display panel - Google Patents
The preparation method and display panel of display panel Download PDFInfo
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- CN110246880A CN110246880A CN201910513113.4A CN201910513113A CN110246880A CN 110246880 A CN110246880 A CN 110246880A CN 201910513113 A CN201910513113 A CN 201910513113A CN 110246880 A CN110246880 A CN 110246880A
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- base board
- flexible base
- display panel
- graphene
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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
- H10K50/87—Arrangements for heating or cooling
-
- 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
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention provides the preparation method and display panel of a kind of display panel, by the way that the glass substrate in the lower substrate in existing display panel is removed, at least part substrate of flexible base board in lower substrate is changed into the graphene flexible base board with graphene-structured simultaneously, rapid cooling is carried out to display panel by graphene good heating conduction, graphene flexible base board reduces the thickness of display panel instead of foam/three-in-one radiator structure of graphite/copper foil original in display panel simultaneously.
Description
Technical field
The present invention relates to field of display technology more particularly to the preparation methods and display panel of a kind of display panel.
Background technique
Display panel, if Organic Light Emitting Diode (Organic Light-Emitting Diode, referred to as: OLED) is because of it
Possess huge development potentiality in the direction of solid-state lighting and FPD and obtains the very big concern of academia and industrial circle.
Flexible OLED display is due to being display industry hot topic with the characteristics such as low-power consumption, high-resolution, quick response, bent
Developing direction, the more thin then market competitiveness of thickness are bigger.Polyimides (Polyimide, PI) or poly- pair are generallyd use at present
The flexible materials such as Phthalic acids plastics (Polyethylene terephthalate, PET) are as substrate, above it successively
Prepare film crystal diode (Thin film transistor, TFT), OLED, thin-film encapsulation layer (Thin film
Encapsulation, TFE), then continue to prepare polaroid and encapsulation above.
In order to drive TFT, need to prepare circuit in flexible base board bottom.When display panel work, electric current passes through TFT electricity
Road can generate heat, for convenience heat dissipation usually polyimides back of the membrane increase backboard (Back Plate, BP) and foam/graphite/
Copper foil three-in-one structure, foam, graphite, copper foil (Cu coil) including acrylic material, but the thickness of three-in-one structure compared with
It greatly, is 50~100um；And graphite is lamellar structure, heat is conducted mainly along lamella direction, and the heat dissipation effect of display panel is not
Enough ideals.
Summary of the invention
The display panel thickness that the present invention is directed under the prior art is larger, the bad problem of heat dissipation effect, proposes a kind of aobvious
Show the preparation method and display panel of panel.
In a first aspect, the present invention proposes a kind of preparation method of display panel, which comprises
Glass substrate is provided；
Flexible base board is formed on the glass substrate；
Array layer, luminescent layer and encapsulated layer are sequentially prepared on the flexible base board；
Remove the glass substrate on the flexible base board；
At least part substrate of the flexible base board is changed into the graphene flexible base board with graphene-structured.
Further, the glass substrate on the removing flexible base board, comprising:
The glass substrate on the flexible base board is removed by the way of laser cutting.
Further, described that at least part substrate of the flexible base board is changed into the graphite with graphene-structured
Alkene flexible base board, comprising:
At least part substrate of the flexible base board is changed into graphene-structured by induced with laser process
Graphene flexible base board.
Further, during the induced with laser power of laser between 0.5-3W.
Further, the method also includes: the graphene flexible base board the back side be bonded heat-conducting metal, with carry out
Heat dissipation.
Further, the method also includes: mould group technique is successively carried out above the encapsulated layer, to the display
Panel is protected.
Further, the graphene-structured in the graphene flexible base board is vertical protrusion structure, so that heat passes through
Vertical-path is conducted.
Second aspect, the present invention also provides a kind of display panel, the display panel includes:
Flexible base board, at least part substrate of the flexible base board are the graphene flexibility base with graphene-structured
Plate；
Array layer is located above the graphene flexible base board；
Luminescent layer is located above the array layer；
Encapsulated layer is located above the luminescent layer；
Further, the display panel further includes heat-conducting metal, and the heat-conducting metal is located at the graphene flexibility base
Below plate, it is bonded with the graphene flexible base board.
Further, the graphene-structured is vertical protrusion structure, and heat is passed by vertical-path
It leads.
The present invention provides the preparation method and display panel of a kind of display panel, by the lower substrate in existing display panel
In glass substrate removing, while at least part substrate of the flexible base board in lower substrate is become having graphene-structured
Graphene flexible base board carries out rapid cooling to display panel by the good heating conduction of graphene, while graphene is flexible
Substrate reduces the thickness of display panel instead of foam/three-in-one radiator structure of graphite/copper foil original in display panel.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of invention
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is one embodiment flow diagram of display panel preparation method provided by the present invention；
Fig. 2 is the structural schematic diagram for the display panel embodiment that step S2 provided by the invention is prepared；
Fig. 3 is an embodiment flow chart of step S3 provided by the invention；
Fig. 4 is the structural schematic diagram for the display panel embodiment that step S3 provided by the invention is prepared；
Fig. 5 is the structural schematic diagram of one embodiment of display panel after glass substrate provided by the invention removing；
Fig. 6 is the example structure schematic diagram that flexible base board provided by the invention is changed into graphene substrate；
Fig. 7 is the schematic diagram of one example structure of display panel after completion mould group technique provided by the invention；
Fig. 8 is the structural schematic diagram of one embodiment of display panel provided by the invention.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the present invention
Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.The similar unit of structure is with being given the same reference numerals in the figure.
Attached drawing and explanation are considered inherently illustrative, rather than restrictive.The similar list of structure in the figure
Member is with being given the same reference numerals.In addition, in order to understand and be convenient for description, the size and thickness of each component shown in the accompanying drawings
It is all arbitrarily shown, but the invention is not restricted to this.
In the accompanying drawings, for clarity, the thickness in layer, film, panel, region etc. is exaggerated.In the accompanying drawings, in order to understand
Conveniently and convenient for description, the thickness of some layer and region is exaggerated.It should be noted that ought such as layer, film, region or substrate
When component is referred to as " " another component "upper".The component can directly on another component, or there may also be
Intermediate module.
In addition, in the description, unless explicitly described as opposite, otherwise word " comprising " will be understood as meaning to wrap
The component is included, but is not excluded for any other component.Furthermore in the description, " ... on " mean to be located on target element
Side or lower section, and be not intended to must be positioned on the top based on gravity direction.
Further to illustrate the present invention to reach the taken technical means and efficacy of predetermined invention, below in conjunction with attached drawing
And preferred embodiment, to the preparation method and display panel of display panel proposed according to the present invention, specific embodiment, knot
Structure, feature and its effect, detailed description are as follows.
The display panel thickness that the present invention is directed under the prior art is larger, the bad problem of heat dissipation effect, proposes a kind of aobvious
Show the preparation method of panel, is as shown in Figure 1 one panel preparation method embodiment flow diagram of display provided by the present invention.
The preparation method of the display panel includes:
S 1, glass substrate is provided；
S2, flexible base board is formed on the glass substrate；
S3, array layer, luminescent layer and encapsulated layer are sequentially prepared on the flexible base board；
Glass substrate on S4, the removing flexible base board；
S5, at least part substrate of the flexible base board is changed into the graphene flexibility base with graphene-structured
Plate.
The preparation method of display panel provided by the invention, by by the glass in the lower substrate in existing display panel
Strippable substrate, while at least part substrate of the flexible base board in lower substrate is changed into the graphene with graphene-structured
Flexible base board carries out rapid cooling, while graphene flexible base board generation to display panel by the good heating conduction of graphene
Original foam/three-in-one radiator structure of graphite/copper foil in display panel has been replaced, the thickness of display panel is reduced.
As shown in Fig. 2, for the structural schematic diagram of the step S2 provided by the invention display panel embodiment being prepared,
Wherein, flexible base board 210 is prepared in the top of glass substrate 110.In some embodiments of the invention, the step S2 is in institute
It states and forms the material of flexible base board described in flexible base board on glass substrate as a kind of polymer precursor.
Specifically, the polymer precursor can be the organic matters such as polyimides or polysulfones.Prepare the flexible base board
Method the flexible base board can be prepared using the method that organic matter is coated with.
In some other embodiments of the invention, as shown in figure 3, being an embodiment stream of step S3 provided by the invention
Cheng Tu, the step S3 are sequentially prepared array layer, luminescent layer and encapsulated layer on the flexible base board and may include:
S301, array layer is prepared on the flexible base board.
Specifically, preparing array layer 310 on the flexible base board may include preparing buffering on the flexible base board
Layer, TFT layer, planarization layer, anode, pixel defining layer.
S302, luminescent layer is prepared on the array layer.
Specifically, preparing luminescent layer 320 on the array layer may include preparing hole injection/biography in the array layer
Defeated layer, luminescent layer, electron-transport/implanted layer, cathode.
S303, encapsulated layer is prepared on the light-emitting layer.
Specifically, preparing encapsulated layer 330 on the luminescent layer 320 may include preparing multiple to have on the light-emitting layer
Machine film layer and inorganic film, to be packaged to the display panel.
Wherein, the multiple organic film and inorganic film can form for inorganic/organic/inorganic multilayer film is overlapping.
It should be noted that in embodiments of the present invention, preparing the tool of array layer 310, luminescent layer 320 and encapsulated layer 330
Body method can refer to the prior art, herein without limitation.
As shown in figure 4, for the structural schematic diagram of the step S3 provided by the invention display panel embodiment being prepared,
Wherein, array layer 310, luminescent layer 320 and encapsulated layer 330 are sequentially prepared in the top of flexible base board 210.
As shown in figure 5, being the structural representation of one embodiment of display panel after glass substrate provided by the invention removing
Figure.In some embodiments of the present invention, the glass substrate on flexible base board described in step S4 glass may include: to the glass
Substrate carries out laser lift-off, so that the glass substrate is separated with flexible base board.
As shown in fig. 6, being changed into an example structure schematic diagram of graphene substrate for flexible base board provided by the invention.
In some embodiments of the invention, the flexible base board is changed into the graphene flexibility base with graphene-structured by step S5
Plate includes:
Induced with laser is carried out to the flexible base board 210 after progress laser lift-off, after the carry out laser lift-off
At least part substrate of flexible base board 210 is changed into the graphene flexible base board with graphene-structured.
Specifically, in some embodiments of the invention, after carrying out laser lift-off to flexible base board 210, peeling off
The glass substrate 110 of script carries out induced with laser to flexible base board 210 at this time, so that a part of substrate of flexible base board 210 exists
It is changed into the graphene flexible base board with graphene-structured under the action of induced with laser.
In other embodiments of the invention, induced with laser is carried out to the flexible base board 210 after progress laser lift-off, also
Entire flexible base board 210 can be changed into the graphene flexible base board with graphene-structured.
Wherein, the laser ingredient for carrying out induced with laser to the flexible base board after the laser lift-off can be carbon dioxide, and
Induced with laser process needs carry out in atmospheric environment or ar gas environment.
In some embodiments of the invention, the laser power of the induced with laser is between 0.5-3W.
Specifically, the laser power of the induced with laser can be 0.5W, 1W, 3W etc..
At least part substrate of flexible base board flexible base board 210 after carrying out induced with laser after the laser lift-off changes
For the flexible base board 220 with graphene-structured, and the graphene-structured is vertical protrusion structure, can make display surface in this way
The heat that plate generates is spread out all along the vertical protrusion structure, shortens heat dissipation path, so that heat can distribute faster,
Improve heat dissipation effect.
In some embodiments of the invention, the preparation method of the display panel can also include: on encapsulated layer successively
Mould group technique is carried out, to protect to display panel.As shown in fig. 7, to be aobvious after completion mould group technique provided by the invention
Show the schematic diagram of one example structure of panel.
Specifically, the mould group technique that successively carries out on encapsulated layer may include: to prepare optical cement on encapsulated layer 330
410；Touch modules 420 are prepared on the optical cement 410；Polaroid 430 is prepared in the touch modules 420；Described
Cover board 440 is prepared on polaroid 430.
It should be noted that successively carrying out above-mentioned mould group technique on encapsulated layer can not do with reference to the prior art herein
It limits.
In some embodiments of the invention, the preparation method of the display panel can also include: to carry out induced with laser
The graphene flexible base board back side fitting metal layer 510 formed afterwards, faster to be radiated.
Specifically, the metal layer can be that copper foil can be better since metallic copper has good heat dissipation characteristics
It radiates to display panel.
The present invention also provides a kind of display panels, as shown in figure 8, being the knot of one embodiment of display panel provided by the invention
Structure schematic diagram, in some embodiments of the invention, which may include:
Graphene flexible base board 220；
Array layer 320 is located at 220 top of graphene flexible base board；
Luminescent layer 330 is located at 320 top of array layer；
Encapsulated layer 340 is located at 330 top of luminescent layer.
Display panel provided by the present invention by by the lower substrate in existing display panel glass substrate remove,
At least part substrate of the flexible base board in lower substrate is changed into the graphene flexible base board with graphene-structured simultaneously,
Rapid cooling is carried out to display panel by graphene good heating conduction, while graphene flexible base board is instead of display surface
Original foam/three-in-one radiator structure of graphite/copper foil, reduces the thickness of display panel in plate.
In some embodiments of the invention, the array layer 310 may include: buffer layer, TFT layer, planarization layer, sun
Pole, pixel defining layer.
In some embodiments of the invention, the luminescent layer 320 may include: hole injection/transport layer, luminescent layer,
Electron-transport/implanted layer, cathode.
In some embodiments of the invention, the encapsulated layer 330 may include multiple organic films and inorganic film, use
To be packaged to the display panel.
Wherein, the multiple organic film and inorganic film can form for inorganic/organic/inorganic multilayer film is overlapping.
On the basis of the above embodiments, in other embodiments of the invention, the display panel can also include: according to
The secondary optical cement 410 for being prepared in 330 top of encapsulated layer, touch modules 420, polaroid 430, cover board 440.
In some embodiments of the invention, which can also include metal layer 510, which is located at
The lower surface of the graphene flexible base board 310 is bonded setting with the back side of the graphene flexible base board 310, passes through metal
Conductive force heat is distributed.
Specifically, the metal layer can be that copper foil can be better since metallic copper has good heat dissipation characteristics
It radiates to display panel.
Above-mentioned purpose according to the present invention proposes a kind of display panel, the preparation method including above-mentioned display panel.This
The working principle for the display panel that embodiment provides, it is consistent with the embodiment working principle of the preparation method of aforementioned display panel,
Specific structure relationship and working principle are referring to the preparation method embodiment of aforementioned display panel, and details are not described herein again.
It should be noted that the explanation and elaboration of book, the technical staff in field of the present invention may be used also according to the above description
To change and modify the above embodiment.Therefore, the invention is not limited to specific implementations disclosed and described above
Mode, to it is of the invention it is some equally repair and change should also be as within scope of protection of the claims of the invention.In addition, to the greatest extent
It is used some specific terms in pipe this specification, these terms are merely for convenience of description, does not constitute to the present invention
Any restrictions.
Claims (10)
1. a kind of preparation method of display panel, which is characterized in that the described method includes:
Glass substrate is provided；
Flexible base board is formed on the glass substrate；
Array layer, luminescent layer and encapsulated layer are sequentially prepared on the flexible base board；
Remove the glass substrate on the flexible base board；
At least part substrate of the flexible base board is changed into the graphene flexible base board with graphene-structured.
2. the preparation method of display panel according to claim 1, which is characterized in that on the removing flexible base board
Glass substrate, comprising:
The glass substrate on the flexible base board is removed by the way of laser cutting.
3. the preparation method of display panel according to claim 1, which is characterized in that it is described by the flexible base board extremely
Few a part of substrate is changed into the graphene flexible base board with graphene-structured, comprising:
At least part substrate of the flexible base board is changed into the graphite with graphene-structured by induced with laser process
Alkene flexible base board.
4. the preparation method of display panel according to claim 3, which is characterized in that laser during the induced with laser
Power between 0.5-3W.
5. the preparation method of display panel according to claim 1, which is characterized in that the method also includes: described
The back side of graphene flexible base board is bonded heat-conducting metal, to radiate.
6. the preparation method of display panel according to claim 1, which is characterized in that the method also includes: described
Mould group technique is carried out above encapsulated layer, successively to protect to the display panel.
7. the preparation method of display panel according to claim 1, which is characterized in that in the graphene flexible base board
Graphene-structured is vertical protrusion structure, so that heat is conducted by vertical-path.
8. a kind of display panel, which is characterized in that the display panel includes:
Flexible base board, at least part substrate of the flexible base board are the graphene flexible base board with graphene-structured；
Array layer is located above the graphene flexible base board；
Luminescent layer is located above the array layer；
Encapsulated layer is located above the luminescent layer.
9. display panel as claimed in claim 8, which is characterized in that the display panel further includes heat-conducting metal, described to lead
Thermometal is located at below the graphene flexible base board, is bonded with the graphene flexible base board.
10. display panel as claimed in claim 8, which is characterized in that the graphene-structured in the graphene flexible base board
For vertical protrusion structure, heat is conducted by vertical-path.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910513113.4A CN110246880B (en) | 2019-06-14 | 2019-06-14 | Preparation method of display panel and display panel |
| PCT/CN2019/107403 WO2020248431A1 (en) | 2019-06-14 | 2019-09-24 | Method for preparing display panel, and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910513113.4A CN110246880B (en) | 2019-06-14 | 2019-06-14 | Preparation method of display panel and display panel |
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| CN110246880A true CN110246880A (en) | 2019-09-17 |
| CN110246880B CN110246880B (en) | 2022-01-25 |
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| CN111029380A (en) * | 2019-12-06 | 2020-04-17 | 武汉华星光电半导体显示技术有限公司 | Display device |
| CN111194461A (en) * | 2019-12-19 | 2020-05-22 | 重庆康佳光电技术研究院有限公司 | Display panel, preparation method thereof and display |
| CN114300635A (en) * | 2021-12-27 | 2022-04-08 | 深圳市华星光电半导体显示技术有限公司 | Display device and method for manufacturing the same |
| CN114627768A (en) * | 2022-04-06 | 2022-06-14 | 深圳市华星光电半导体显示技术有限公司 | Flexible OLED display module, manufacturing method and terminal equipment |
| CN114627768B (en) * | 2022-04-06 | 2024-03-15 | 深圳市华星光电半导体显示技术有限公司 | Flexible OLED display module, manufacturing method and terminal equipment |
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| Publication number | Publication date |
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| CN110246880B (en) | 2022-01-25 |
| WO2020248431A1 (en) | 2020-12-17 |
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