CN208819915U - Flexible display panels and device - Google Patents
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- CN208819915U CN208819915U CN201821620486.9U CN201821620486U CN208819915U CN 208819915 U CN208819915 U CN 208819915U CN 201821620486 U CN201821620486 U CN 201821620486U CN 208819915 U CN208819915 U CN 208819915U
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Abstract
The utility model relates to flexible display technologies fields, disclose a kind of flexible display panels and the display device using the flexible display panels.In the utility model, flexible display panels include: the anode electrode film layer of flexible base board and the multiple pixels being set on the flexible base board；Each anode electrode film layer includes: silver layer, Indium-tin Oxide Transparent Conductive Film and stretchable metal film；The bending resistance of the stretchable metal film is greater than the bending resistance of the Indium-tin Oxide Transparent Conductive Film；The silver layer is set between the Indium-tin Oxide Transparent Conductive Film and the stretchable metal film.The utility model embodiment replaces the indium oxide layer tin transparent conductive film layer in traditional anode electrodes film layer by the high stretchable metal layer of intensity resistant to bending, so as to improve the intensity resistant to bending of anode, reduces anode crack risk, improves the reliability of product.
Description
Technical field
The utility model relates to flexible display technologies field, in particular to a kind of flexible display panels and the use flexibility
The display device of display panel.
Background technique
With the development of display technology, display panel is widely used in the portable electronic products such as mobile phone, palm PC
In, especially flexible display screen, it is foldable with its, easy to carry, have a wide range of application, the viewing experience advantages such as more preferably increasingly by
To the favor of user, become the development trend of the following various intelligent display screens.Mainly application is one of Flexible Displays at present
For foldable display.
At least there are the following problems in the prior art: Organic Light Emitting Diode (Organic Light- for inventor's discovery
Emitting
Diode, OLED) etc. flexible display technologies in, traditional anode electrodes generally use ITO/Ag/ITO composition metal
Layer structure, the rigidity of this kind of metal-layer structure is larger, intensity resistant to bending is low, bending when inside easy fracture/cracking, cause anode
It is low to be unable to normal received signal, pixel intensity.
Utility model content
The purpose of this utility model is to provide a kind of flexible display panels and using the display of the flexible display panels
Device replaces the indium oxide layer tin in traditional anode electrodes film layer is transparent to lead by the high stretchable metal layer of intensity resistant to bending
Electrolemma layer reduces anode crack risk, improves the reliability of product so as to improve the intensity resistant to bending of anode.
In order to solve the above technical problems, the embodiments of the present invention provide a kind of flexible display panels, comprising: flexible
The anode electrode film layer of substrate and the multiple pixels being set on the flexible base board；Each anode electrode film layer packet
It includes: silver layer, Indium-tin Oxide Transparent Conductive Film and stretchable metal film；The bending resistance of the stretchable metal film is greater than institute
State the bending resistance of Indium-tin Oxide Transparent Conductive Film；The silver layer is set to the Indium-tin Oxide Transparent Conductive Film and described
Between stretchable metal film.
In order to solve the above technical problems, the embodiments of the present invention provide a kind of display device, including as previously described
Flexible display panels.
It is conductive that the utility model embodiment is greater than indium tin oxide transparent in terms of existing technologies, by bending resistance
Indium oxide layer tin transparent conductive film in the stretchable metal film substitution traditional anode electrodes film layer of film, to form indium oxide
Three layers of composite anode electrode film layer structure of tin transparent conductive film/stretchable metal film of Ag/, can reduce anode electrode film layer
Rigidity improves its intensity resistant to bending, and then or cracking not easy to break in bending, improves the reliability of product.
As one embodiment, the flexible display panels further include being formed in shining in the anode electrode film layer
Layer, the Indium-tin Oxide Transparent Conductive Film is between the luminescent layer and the silver layer.In this way, anode electrode film layer is each
Setting sequence of the sublayer between luminescent layer and flexible base board is followed successively by Indium-tin Oxide Transparent Conductive Film, silver layer and stretchable gold
Belong to film, thus the Indium-tin Oxide Transparent Conductive Film by being arranged close to luminescent layer can provide higher hole overflow capability, protect
Demonstrate,prove the working performance of anode；It is capable of providing preferable light transmission rate and reflectivity by silver layer, and silver layer passes through tin indium oxide
Transparent conductive film is connect with luminescent layer, is connect by stretchable metal film with flexible base board, it is ensured that it is between adjacent layer
Adhesive force, avoid bending when anode electrode film layer fall off；By the way that stretchable metal film to be disposed adjacent with flexible base board, not only
It can make to combine between anode electrode film layer and flexible base board stronger, and the bending resistance of anode electrode film layer can be significantly improved
Can, it prevents from being broken or cracking when its bending.
As one embodiment, the stretchable metal film is the stretchable metal film being prepared using memorial alloy.
As one embodiment, the memorial alloy is Ultimum Ti or copper-based memory alloy.Memorial alloy power
Have excellent performance, such as with mechanical characteristics such as shape memory effect, super-elasticity, low-density, high intensity, high-dampings, thus not
Only can solve because the big intensity of anode electrode film layer rigidity it is low caused by film layer fracture, the problem of signal cannot be received, but also
Due to its high damping properties, the shock resistance of flexible display screen can be improved；Meanwhile the characteristic of shape memory can make it is soft
Property screen restore original shape in certain time after bending, thus be conducive to improve flexible screen service life.
As one embodiment, the stretchable metal film is titanium/aluminum composite metal film.
As one embodiment, the titanium/aluminum composite metal film is specially titanium/aluminium/titanium composite metal membrane.Titanium/aluminium/titanium is multiple
Closing metal film has Low ESR and stronger bending resistance, thus is suitable for stretchable metal film.
As one embodiment, the stretchable metal film is molybdenum/aluminum composite metal film.
As one embodiment, the molybdenum/aluminum composite metal film is specially molybdenum/aluminium/sodium/molybdenum composite metal film.Molybdenum/aluminium/molybdenum is multiple
Closing metal film also has Low ESR and stronger bending resistance, thus is also suitable for stretchable metal film.
Detailed description of the invention
Fig. 1 is the cross section structure schematic diagram according to the utility model first embodiment flexible display panels；
Fig. 2 is the cross section structure schematic diagram according to the utility model second embodiment flexible display panels；
Fig. 3 is cutting comprising titanium/aluminium/titanium composite metal membrane according to the utility model 3rd embodiment flexible display panels
Face structural schematic diagram；
Fig. 4 is cutting comprising molybdenum/aluminium/sodium/molybdenum composite metal film according to the utility model 3rd embodiment flexible display panels
Face structural schematic diagram.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Each embodiment of type is explained in detail.However, it will be understood by those skilled in the art that in each reality of the utility model
It applies in example, in order to make the reader understand this application better, many technical details are proposed.But it is even if thin without these technologies
Section and the various changes and modifications based on following embodiment, also may be implemented each claim of the application skill claimed
Art scheme.
It should be noted that the nouns of locality such as "upper", "lower" described in the embodiment of the present invention, "left", "right" are with attached drawing
Shown in angle come what is be described, be understood not to the restriction to the embodiment of the present invention.In addition, within a context, also needing
It is to be understood that can not only directly be formed when mentioning an element and being formed on another element "upper" or "lower"
In another element "upper", perhaps "lower" can also be indirectly formed by intermediary element in another element "upper" or "lower".
The first embodiment of the utility model is related to a kind of flexible display panels, can be applied to display device.Such as Fig. 1 institute
Show, the flexible display apparatus of the present embodiment includes: the anode of flexible base board 1 and the multiple pixels being set on flexible base board 1
Electrode film layer 2.Each anode electrode film layer 2 includes: silver layer, Indium-tin Oxide Transparent Conductive Film and stretchable metal film, can be drawn
The bending resistance for stretching metal film is greater than the bending resistance of Indium-tin Oxide Transparent Conductive Film.Silver layer is set to indium tin oxide transparent
Between conductive film and stretchable metal film.The utility model embodiment in terms of existing technologies, passes through bending resistance
It is transparent greater than the indium oxide layer tin in the stretchable metal film of Indium-tin Oxide Transparent Conductive Film substitution traditional anode electrodes film layer
Conductive film, so that three layers of composite anode electrode film layer structure of the stretchable metal film of Indium-tin Oxide Transparent Conductive Film/Ag/ are formed,
The rigidity of anode electrode film layer can be reduced, improve its intensity resistant to bending, and then or cracking not easy to break in bending, improved
The reliability of product.The realization details of the flexible display panels of the present embodiment is specifically described below, the following contents is only
For convenience of the realization details provided is understood, not implement the necessary of this programme.
Specifically, the bending demand of the different display areas of flexible display panels may be different, such as the viewing area having
The bending degree that domain needs is larger, and the bending degree that some display areas need is smaller.Therefore, in practical applications, flexible aobvious
Show that stretchable metal film substitution Indium-tin Oxide Transparent Conductive Film can be used in all anode electrode film layer structures in panel, or
The anode electrode film layer structure use that can also be only the biggish display area of bending degree of demand in flexible display panels can
Stretching metal film substitution Indium-tin Oxide Transparent Conductive Film, and the anode electrode film of the lesser display area of degree resistant to bending of demand
Layer structure still uses Indium-tin Oxide Transparent Conductive Film (ITO)/silver (Ag)/transparent conductive film (ITO) structure.In the present embodiment, sun
The shape of pole electrode film layer can be rectangle, and so without being limited thereto, in some instances, the shape of anode electrode film layer can also be
Circle, triangle, square etc..
In the present embodiment, anode electrode film layer 2 use sandwich diaphragm layer structure, be respectively from top to bottom first layer 20,
The second layer 21 and third layer 22.In general, flexible display panels further include pixel confining layer (not shown), are formed in anode
Luminescent layer 3 and cathode layer (not shown) on electrode film layer, luminescent layer 3 be set to pixel confining layer, anode electrode film layer with
And in the sealing space that surrounds of cathode layer.Luminescent layer 3 is, for example, to be based on Organic Light Emitting Diode, light emitting diode with quantum dots etc.
The luminescent layer that display technology is formed, it is so without being limited thereto.In the present embodiment, first layer 20 be Indium-tin Oxide Transparent Conductive Film (ITO),
The second layer 21 is silver-colored (Ag) layer, third layer 22 is stretchable metal film.I.e. Indium-tin Oxide Transparent Conductive Film be located at luminescent layer 3 and
Between silver layer.Indium-tin Oxide Transparent Conductive Film is arranged close to luminescent layer 3, and hole overflow capability with higher, it is thus possible to
Guarantee the working performance of anode.Silver layer surface is smooth, is capable of providing preferable light transmission rate and reflectivity.Due to 3 He of luminescent layer
The film layer adjacent with anode electrode film layer 2 is generally organic layer on flexible base board 1, and silver layer is connected by first layer 20 and luminescent layer 3
Connect, connect by third layer 22 with flexible base board 1, directly connect with luminescent layer 3 compared to silver layer or silver layer directly with flexibility
Substrate 1 connects, its adhesive force between adjacent layer can be improved, and anode electrode film layer when bending is avoided to fall off.Stretchable gold
Belong to film to be disposed adjacent with flexible base board 1, can make between anode electrode film layer 2 and flexible base board 1 in conjunction with stronger, and can be obvious
The bending resistance for improving anode electrode film layer 2 prevents from being broken or cracking when its bending.
Specifically, in the present embodiment, stretchable metal film can be the stretchable metal being prepared using memorial alloy
Film.Further, memorial alloy can be Ultimum Ti or copper-based memory alloy, and so without being limited thereto, any satisfaction is originally
The memorial alloy that the bending resistance of embodiment requires is in the protection scope of the present embodiment.NiTi (Ni-Ti) shape memory
Alloy, excellent in mechanical performance, such as with shape memory effect, super-elasticity, the mechanics spy of low-density, high intensity, high-damping etc.
Property, thus not only anode toughness and shock resistance can be improved while not influencing electric conductivity, meanwhile, shape memory
Characteristic can make flexible screen restore original shape in certain time after bending, be conducive to improve flexible screen service life and
Using effect.Improve service life and the using effect of flexible screen.In practical applications, the stretchable metal of Ultimum Ti material
Film can be used magnetron sputtering technique with Indium-tin Oxide Transparent Conductive Film and be prepared, and details are not described herein again.
In the present embodiment, flexible base board 1 is for example including flexible substrates, the drive circuit layer for stacking gradually setting from bottom to top
And planarization layer PLN:Planarization layer) (not shown).The anode electrode film layer 2 of each pixel is formed in flat
On smoothization layer.Wherein, flexible substrates can be by acid imide (PI), polycarbonate (PC), polyether sulfone (PES), poly terephthalic acid
Glycol ester (PET), polyethylene naphthalate (PEN), polyarylate (PAR) or fiberglass reinforced plastics
(FRP) etc. polymer materials are formed, flexible substrates can be it is transparent, translucent or opaque, with each to thereon
Film layer provides support.Planarization layer can be the organic of the formation such as acrylic, polyimides (PI) or benzocyclobutene (BCB)
Layer.Drive circuit layer is provided with thin film transistor (TFT) (Thin Film Transistor, TFT).Drive circuit layer passes through doped N-type
Foreign ion or p type impurity ion and form source region and drain region, the area between source region and drain region
Domain is the channel region of impurity of undoping.Drive circuit layer can make amorphous silicon change into polycrystalline by way of recrystallized amorphous silicon
Silicon and formed.Anode electrode film layer 2 can be brilliant by the contact hole (also known as conductive via) and film that are formed in planarization layer
The drain electrode of body pipe is electrically connected.
The present embodiment in terms of existing technologies, passes through the splendid marmem substitution tradition sun of bending resistance
Lower layer (one layer i.e. far from luminescent layer) Indium-tin Oxide Transparent Conductive Film in the electrode film layer of pole is arranged from top to bottom to be formed
Indium-tin Oxide Transparent Conductive Film/Ag/ Ultimum Ti etc. three layers of composite anode electrode film layer structure, can guarantee anode
Signal inputs on the basis of performance, improves anode toughness and shock resistance, and flexible screen can be made to bend latter timing
It is interior to restore original shape, be conducive to the service life and using effect that improve flexible screen.
The second embodiment of the utility model is related to a kind of flexible display panels.Second embodiment and first embodiment are substantially
Identical, be in place of the main distinction: in the first embodiment, stretchable metal film is located at the third layer of anode electrode film layer.And
In the utility model second embodiment, stretchable metal film is located at the first layer of anode electrode film layer, thus to improve anode
The bending resistance of electrode film layer provides numerous embodiments.
Referring to Fig. 2, the flexible display panels of the present embodiment include: flexible base board 1, be set to it is more on flexible base board 1
The anode electrode film layer 2 of a pixel and the luminescent layer 3 being set in anode electrode film layer 2.In the present embodiment, anode electrode film
Layer 2 is using three layers of lamination layer structure being identical with the first embodiment.Wherein, first layer 20 is stretchable metal film, and the second layer is
Silver layer, third layer are Indium-tin Oxide Transparent Conductive Film.
Specifically, the stretchable metal film of the present embodiment can be using the marmem material being identical with the first embodiment
Material is prepared, and details are not described herein again.
Anode can be improved compared with previous embodiment, through the stretchable metal film that memorial alloy makes in the present embodiment
Bending resistance and service life, and higher hole is stilld provide by the Indium-tin Oxide Transparent Conductive Film below silver layer and is overflow
Output capacity can satisfy the working performance of anode.
The 3rd embodiment of the utility model is related to a kind of flexible display panels.3rd embodiment is real with first or second
It is roughly the same to apply example, is in place of the main distinction: in first or second embodiment, stretchable metal film uses memorial alloy
Material production.And in the utility model 3rd embodiment, stretchable metal film uses the preferable metal material of other tensile properties
Material production.
Referring to Fig. 3, stretchable metal film 22 can be titanium/aluminum composite metal film in the present embodiment.Further, titanium/
Aluminum composite metal film can be titanium Ti/ aluminium Al/ titanium Ti composite metal membrane.In practical applications, the compound gold of titanium Ti/ aluminium Al/ titanium Ti
Belonging to film can process to obtain using existing yellow light and dry etching or wet-etching technology, and details are not described herein again.
Referring to Fig. 4, in some instances, stretchable metal film 22 can also be molybdenum/aluminum composite metal film.Further
Ground, molybdenum/aluminum composite metal film can be with molybdenum Mo/ aluminium Al/ molybdenum Mo composite metal membranes.In practical applications, molybdenum Mo/ aluminium Al/ molybdenum Mo is multiple
Closing metal film can also process to obtain using existing yellow light and dry etching or wet-etching technology, no longer superfluous herein
It states.
For the present embodiment compared with previous embodiment, titanium Ti/ aluminium Al/ titanium Ti composite metal membrane or molybdenum Mo/ aluminium Al/ molybdenum Mo are multiple
Closing metal film has more preferably bending resistance compared to Indium-tin Oxide Transparent Conductive Film, and material and process costs are lower.
The utility model fourth embodiment is related to a kind of display device, can be applied to electronic equipment.Electronic equipment can be
Smart phone, tablet computer, media player, watch equipment, pendant equipment, headphone or earbud device, game are set
Standby, navigation equipment etc., the present embodiment are not particularly limited the type of electronic equipment.The display device of the present embodiment includes such as
Flexible display panels described in first embodiment.
The present embodiment in terms of existing technologies, passes through the splendid marmem substitution tradition sun of bending resistance
Lower layer (one layer i.e. far from luminescent layer) Indium-tin Oxide Transparent Conductive Film in the electrode film layer of pole is arranged from top to bottom to be formed
Indium-tin Oxide Transparent Conductive Film/Ag/ Ultimum Ti etc. three layers of composite anode electrode film layer structure, can guarantee anode
Signal inputs on the basis of performance, improves anode toughness and shock resistance, and flexible screen can be made to bend latter timing
It is interior to restore original shape, be conducive to the service life and using effect that improve flexible screen.
It will be understood by those skilled in the art that the various embodiments described above are to realize the specific implementation of the utility model
Example, and in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit of the utility model
And range.
Claims (9)
1. a kind of flexible display panels characterized by comprising flexible base board and be set to multiple on the flexible base board
The anode electrode film layer of pixel；
Each anode electrode film layer includes: silver layer, Indium-tin Oxide Transparent Conductive Film and stretchable metal film；
The bending resistance of the stretchable metal film is greater than the bending resistance of the Indium-tin Oxide Transparent Conductive Film；
The silver layer is set between the Indium-tin Oxide Transparent Conductive Film and the stretchable metal film.
2. flexible display panels according to claim 1, which is characterized in that the flexible display panels further include being formed in
Luminescent layer in the anode electrode film layer, the Indium-tin Oxide Transparent Conductive Film be located at the luminescent layer and the silver layer it
Between.
3. flexible display panels according to claim 1, which is characterized in that the stretchable metal film is to be closed using memory
The stretchable metal film that gold is prepared.
4. flexible display panels according to claim 3, which is characterized in that the memorial alloy be Ultimum Ti or
Person's copper-based memory alloy.
5. flexible display panels according to claim 1, which is characterized in that the stretchable metal film is that titanium/aluminium is compound
Metal film.
6. flexible display panels according to claim 5, which is characterized in that the titanium/aluminum composite metal film be specially titanium/
Aluminium/titanium composite metal membrane.
7. flexible display panels according to claim 1, which is characterized in that the stretchable metal film is that molybdenum/aluminium is compound
Metal film.
8. flexible display panels according to claim 7, which is characterized in that the molybdenum/aluminum composite metal film be specially molybdenum/
Aluminium/sodium/molybdenum composite metal film.
9. a kind of display device, which is characterized in that including flexible display panels such as described in any item of the claim 1 to 8.
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| CN201821620486.9U CN208819915U (en) | 2018-09-30 | 2018-09-30 | Flexible display panels and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821620486.9U CN208819915U (en) | 2018-09-30 | 2018-09-30 | Flexible display panels and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020233596A1 (en) * | 2019-05-23 | 2020-11-26 | 京东方科技集团股份有限公司 | Organic electroluminescent device, method for manufacture thereof, and display apparatus |
| CN112188658A (en) * | 2020-09-30 | 2021-01-05 | 合肥维信诺科技有限公司 | Display panel and display device |
-
2018
- 2018-09-30 CN CN201821620486.9U patent/CN208819915U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020233596A1 (en) * | 2019-05-23 | 2020-11-26 | 京东方科技集团股份有限公司 | Organic electroluminescent device, method for manufacture thereof, and display apparatus |
| US20210313406A1 (en) * | 2019-05-23 | 2021-10-07 | Boe Technology Group Co., Ltd. | Organic light-emitting diode, method for manufacturing the same, and display apparatus |
| US11825699B2 (en) * | 2019-05-23 | 2023-11-21 | Boe Technology Group Co., Ltd. | OLED with a shape memory alloy bottom electrode, method for manufacturing the same, and display apparatus including the OLED |
| CN112188658A (en) * | 2020-09-30 | 2021-01-05 | 合肥维信诺科技有限公司 | Display panel and display device |
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