CN109461835A - Flexible display panels and preparation method thereof, display device - Google Patents
Flexible display panels and preparation method thereof, display device Download PDFInfo
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- CN109461835A CN109461835A CN201811138643.7A CN201811138643A CN109461835A CN 109461835 A CN109461835 A CN 109461835A CN 201811138643 A CN201811138643 A CN 201811138643A CN 109461835 A CN109461835 A CN 109461835A
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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
- H10K50/805—Electrodes
- H10K50/81—Anodes
- H10K50/813—Anodes characterised by their shape
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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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- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes characterised by their shape
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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Abstract
The present embodiments relate to technical field of semiconductors, a kind of flexible display panels and preparation method thereof, display device are disclosed.Flexible display panels, it include: several luminescence units being arranged in array substrate, each luminescence unit includes the first electrode being stacked, luminescent layer, second electrode, an at least groove is formed in first electrode and/or second electrode, at least a groove is parallel with first direction, and running through first electrode and/or second electrode in a first direction, first direction is vertical with the stacking direction of luminescence unit, and conductive material is filled in an at least groove.In the present invention, when flexible display panels are bent along fold line, at least groove for being parallel to fold line can discharge folding s tress, so that anode layer is not likely to produce crackle or fracture, improve the ability resistant to bending of anode layer.Meanwhile conductive material is filled in an at least groove, to ensure that the consistency of anode layer electric conductivity in bending.
Description
Technical field
The present embodiments relate to technical field of semiconductors, in particular to a kind of flexible display panels and preparation method thereof,
Display device.
Background technique
OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) be also known as organic electroluminescent,
Organic Electricity laser display or organic luminous semiconductor, OLED display technology is due to self-luminous, wide viewing angle, high contrast, low
Energy consumption and the advantages that can be thinned, increasingly receives extensive attention, the flexible display technologies based on OLED make it is foldable or
The display technology of curling becomes possible.
At least there are the following problems in the prior art for inventor's discovery: currently, in the flexible display based on OLED, anode
The making material brittleness of layer is larger, such as the materials such as tin indium oxide, and anode layer is easy cracking, or even fracture in bending, influences
The service life of the flexible display of OLED.
Summary of the invention
Embodiment of the present invention is designed to provide a kind of flexible display panels and preparation method thereof, display device, makes
When obtaining flexible display panels along fold line bending, anode layer is not likely to produce crackle or fracture.
In order to solve the above technical problems, embodiments of the present invention provide a kind of flexible display panels, comprising: setting exists
Several luminescence units in array substrate, each luminescence unit include the first electrode being stacked, luminescent layer, second electrode,
An at least groove is formed in first electrode and/or second electrode, an at least groove is parallel with first direction, and in a first direction
Upper to run through first electrode and/or second electrode, first direction is vertical with the stacking direction of luminescence unit, fills in an at least groove
There is conductive material.
Embodiments of the present invention additionally provide a kind of display device, comprising: above-mentioned flexible display panels
Embodiments of the present invention additionally provide a kind of production method of flexible display panels, comprising: provide a block array
Substrate；Several luminescence units are prepared in array substrate；Each luminescence unit includes the first electrode being stacked, shines
Layer, second electrode are formed with an at least groove in first electrode and/or second electrode, and an at least groove is parallel with first direction,
And running through first electrode and/or second electrode in a first direction, first direction is vertical with the stacking direction of luminescence unit；Extremely
Conductive material is filled in a few groove.
Embodiment of the present invention in terms of existing technologies, in first electrode and/or second electrode on open up at least
One groove, at least a groove are parallel with first direction, and run through anode layer in a first direction；To in flexible display panels
Along first direction bending when, at least groove for being parallel to first direction can discharge folding s tress so that first electrode and/or
It is not likely to produce crackle or fracture in second electrode, improves the ability resistant to bending in first electrode and/or second electrode.Meanwhile
In an at least groove be filled with conductive material, thus ensure that in first electrode and/or second electrode bending when electric conductivity
Consistency.
In addition, at least a groove runs through first electrode and/or second electrode in the stacking direction.In the present embodiment, utilize
At least first electrode and/or second electrode are divided into muti-piece electrode by a groove, are bent in flexible display panels along first direction
When, at least groove for being parallel to first direction can preferably discharge folding s tress, to further improve first electrode
And/or the ability resistant to bending of second electrode；Meanwhile the continuous length of first electrode and/or second electrode is reduced, further keep away
Exempt from first electrode and/or second electrode to crack or be broken in bending.
In addition, conductive material is inorganic conductive material, preferably inorganic conductive material is graphene.In present embodiment,
Inorganic conductive material is filled in an at least groove, the electric conductivity of inorganic conductive material is more preferable, further ensures that anode layer exists
The consistency of electric conductivity when bending.
In addition, groove is less than or equal to the face of end face of the groove far from array substrate close to the area of the end face of array substrate
Product.In the present embodiment, area of the setting groove close to the end face of array substrate is less than or equal to end of the groove far from array substrate
The area in face, in order to the filling of conductive material.
In addition, the section of groove is inverted trapezoidal.
In addition, number of recesses is multiple, and multiple grooves are uniformly distributed in first electrode and/or second electrode.This implementation
In example, multiple grooves are set and are uniformly distributed in first electrode and/or second electrode, to ensure that each groove can be uniform
Discharge folding s tress.
In addition, number of recesses be it is multiple, spacing between adjacent grooves is greater than or equal to 4 microns, and it is micro- to be less than or equal to 6
Rice.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the cross-sectional view of the flexible display panels of first embodiment according to the present invention；
Fig. 2 is the top view of the flexible display panels of first embodiment according to the present invention；
Fig. 3 is the cross-sectional view of the flexible display panels of first embodiment according to the present invention, and the section of further groove is to fall
It is trapezoidal；
Fig. 4 is the cross-sectional view of the flexible display panels of second embodiment according to the present invention；
Fig. 5 is the cross-sectional view of the flexible display panels of third embodiment according to the present invention；
Fig. 6 is the top view of the flexible display panels of third embodiment according to the present invention；
Fig. 7 is the specific flow chart of the preparation method of the flexible display panels of the 5th embodiment according to the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention
In formula, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details
And various changes and modifications based on the following respective embodiments, the application technical solution claimed also may be implemented.
The first embodiment of the present invention is related to a kind of flexible display panels, the flexible display panels are for making display dress
It sets, display device can be the tool such as mobile phone, tablet computer, television set, display, laptop, Digital Frame or navigator
There are the products or components of display function.
In the present embodiment, referring to FIG. 1, flexible display panels include several luminescence units being arranged in array substrate 1
(being illustrated by taking one of luminescence unit as an example in figure), each luminescence unit include the first electrode 21 being stacked, hair
Photosphere 22, second electrode 23, first electrode 21 can be anode layer, and anode layer can be mono-layer oxidized indium tin (Indium tin
Oxide, abbreviation ITO) structure or ITO-AG-ITO three-decker；Luminescent layer 22 includes an at least light emitting pixel unit, the
Two electrodes 23 can be cathode layer, can be made of materials such as aluminium, magnesium silver alloy.
Fig. 1 and Fig. 2 are please referred to, is formed with an at least groove 3 in first electrode 21 and/or second electrode 23, in figure
One electrode 21 and second electrode 23 are illustrated for being respectively formed on a groove 3, and an at least groove 3 and first direction are flat
Row, first direction are any direction vertical with the stacking direction for unit of giving out light, and an at least groove 3 is in a first direction through the
One electrode 21 and second electrode 23；As shown in Fig. 2, first direction is direction shown in dotted line L, groove 3 is parallel with first direction,
And groove 3 runs through anode layer 3 in a first direction.Specifically, after preparing first electrode 21 in array substrate 1, to first
Electrode 21 is patterned processing, can lead to overetched mode and form an at least groove 3 in first electrode 21, at least one is recessed
Slot 3 runs through anode layer 3, i.e. the length phase of the length of anode layer 3 and an at least groove 3 in a first direction in a first direction
Deng, and an at least groove 3 is parallel with first direction, thus when flexible display panels are bent along first direction (i.e. dotted line L), energy
It is enough that folding s tress is discharged by an at least groove 3.In one example, extended state is in first electrode 1 (not to be bent
When) an at least groove 3 width be greater than or equal to 2 microns, and be less than or equal to 3 microns.It is linear with groove in the present embodiment
So without being limited thereto for type, groove can also be in other shapes, such as S type, broken line type etc., if the both ends line of groove with
Fold line L first direction is parallel.It should be noted that with first electrode 21 in the present embodiment and embodiment later
It has been respectively formed on for an at least groove 3 and has been illustrated with second electrode 23, it is so without being limited thereto, it can also be only in first electrode 21
Or an at least groove 3 is formed in second electrode 23.
It is formed in first electrode 21 after an at least groove 3, conductive material 4 is filled in an at least groove 3, then again
Luminescent layer 22 is prepared in first electrode 21, and second electrode 23 is then prepared on luminescent layer 22, it can be same in second electrode 23
Sample opens up an at least groove 3, groove 3 to open up mode roughly the same with the method for groove 3 is opened up in first electrode 21, herein
It repeats no more.After opening up an at least groove 3 in second electrode 23, conductive material 4 is filled equally in an at least groove 3.Its
In, conductive material 4 is filled in an at least groove 3, it is ensured that first electrode 21 and second electrode 23 electric conductivity in bending
The consistency of energy, conductive material 3 can be macromolecule conducting material, such as poly- 3,4-rthylene dioxythiophene, polystyrolsulfon acid
Salt etc..Preferably, conductive material 4 can also be inorganic conductive material, preferably inorganic conductive material is graphene, inorganic conductive
The electric conductivity of material is more preferable, further ensures the consistency of first electrode 21 and second electrode 23 electric conductivity in bending.
It should be noted that when first electrode 21 and second electrode 23 are respectively formed on fluted 3, first electrode 21 and second electrode 23
On groove 3 quantity and position can be arranged on demand.
In one example, area of the groove 3 close to the end face of array substrate 1 is less than or equal to groove 3 far from array base
The area of the end face of plate 1, in order to the filling of conductive material 4；Preferably, referring to FIG. 3, the section of groove 3 be inverted trapezoidal,.
It should be noted that due to of the invention primarily directed to luminescence unit improvements introduced, so there is no to soft
Property display panel other devices describe in detail, do not represent so flexible display panels in the present embodiment only include it is above-mentioned shine
Unit, well known to a person skilled in the art on the basis of, in flexible display panels increase or reduce device, if it includes
Luminescence unit in the present embodiment, within protection scope of the present invention.
Present embodiment in terms of existing technologies, in first electrode and/or second electrode on to open up at least one recessed
Slot, at least a groove are parallel with first direction, and run through anode layer in a first direction；To in flexible display panels along the
When one direction is bent, at least groove for being parallel to first direction can discharge folding s tress, so that first electrode and/or second
It is not likely to produce crackle or fracture on electrode, improves the ability resistant to bending in first electrode and/or second electrode.Meanwhile at least
In one groove be filled with conductive material, thus ensure that in first electrode and/or second electrode bending when electric conductivity one
Cause property.
Second embodiment of the invention is related to a kind of flexible display panels, and present embodiment is on first embodiment basis
On improvement, mainly the improvement is that: at least a groove runs through first electrode 21 and/or second electrode in the stacking direction
23。
Referring to FIG. 4, an at least groove 3 runs through first electrode 21 and second electrode on the stacking direction of luminescence unit
23, that is, the depth for being formed in at least groove 3 in first electrode 21 is equal with the thickness of first electrode 21, is formed in the second electricity
The depth of an at least groove 3 on pole 23 is equal with the thickness of second electrode 23, as shown in figure 3, first electrode 21 and the second electricity
Pole 23 is divided into two pieces by groove 3, to reduce first electrode 21 and the continuous length of second electrode 23, and groove 3 can
Preferably release folding s tress.
Present embodiment is electric by first electrode and/or second using an at least groove for first embodiment
Pole is divided into muti-piece electrode, when flexible display panels are bent along first direction, is parallel to an at least groove energy for first direction
Enough preferably release folding s tress, to further improve the ability resistant to bending of first electrode and/or second electrode；Meanwhile
The continuous length for reducing first electrode and/or second electrode further avoids first electrode and/or second electrode and is bending
When crack or be broken.
Third embodiment of the invention is related to a kind of flexible display panels, and present embodiment is on first embodiment basis
On improvement, mainly the improvement is that: the quantity of groove 3 be it is multiple, and multiple grooves 3 are uniformly distributed in first electrode 21
And/or second electrode 23.
Fig. 4 and Fig. 5 are please referred to, the first electrode 21 of flexible display panels and the quantity of the groove 3 in second electrode 23 are equal
It is 3,3 grooves 3 are uniformly distributed in first electrode 21 and second electrode 23, each groove 3 are uniformly discharged curved
Roll over stress.
In one example, the spacing between adjacent grooves is greater than or equal to 4 microns, and is less than or equal to 6 microns.
Present embodiment for first embodiment, if be arranged multiple grooves be uniformly distributed in first electrode and/
Or second electrode, to ensure that each groove can uniformly discharge folding s tress.It should be noted that present embodiment is also
It can be used as improvement on the basis of second embodiment, can achieve same technical effect.
Four embodiment of the invention is related to a kind of display device, which includes first into third embodiment
The flexible display panels of any one, display device can be mobile phone, tablet computer, television set, display, laptop, number
The code products or components having a display function such as photo frame or navigator.
Present embodiment in terms of existing technologies, provides a kind of display device, and the display device is curved along fold line
When folding, at least groove for being parallel to fold line can discharge folding s tress, so that anode layer is not likely to produce crackle or fracture, mention
The ability resistant to bending of anode layer is risen.Meanwhile conductive material is filled in an at least groove, to ensure that anode layer is being bent
When electric conductivity consistency.
Fifth embodiment of the invention is related to a kind of production method of flexible display panels, for making first embodiment
To the flexible display panels of any one of third embodiment.
The detailed process of the production method of flexible display panels in present embodiment is as shown in Figure 6.Please also refer to figure
7, it is the production flow diagram of flexible display panels.
Step 101, a block array substrate is provided.
Step 102, several luminescence units are prepared in array substrate.
Step 103, conductive material is filled in an at least groove.
Specifically, preparing first electrode 21 in array substrate 1, processing is patterned to first electrode 21, it can be with
Lead to overetched mode and form an at least groove 3 in first electrode 21, an at least groove 3 runs through anode layer in a first direction
3, the i.e. equal length of the length of anode layer 3 and an at least groove 3, an and at least groove 3 and first direction in a first direction
In parallel；It is formed in first electrode 21 after an at least groove 3, conductive material 4 is filled in an at least groove 3, is then existed again
Luminescent layer 22 is prepared in first electrode 21, and second electrode 23 is then prepared on luminescent layer 22, it can be same in second electrode 23
Open up an at least groove 3, groove 3 to open up mode roughly the same with the method for groove 3 is opened up in first electrode 21, herein not
It repeats again.After opening up an at least groove 3 in second electrode 23, conductive material 4 is filled equally in an at least groove 3.Wherein,
It can use fine mask plate, fill conductive material 4 into an at least groove 3 by way of vapor deposition, can guarantee the first electricity
The consistency of pole 21 and second electrode 23 electric conductivity in bending, conductive material 3 can be macromolecule conducting material, such as poly-
3,4-rthylene dioxythiophene, poly styrene sulfonate etc..Preferably, conductive material 4 can also be inorganic conductive material, preferably
Inorganic conductive material is graphene, and the electric conductivity of inorganic conductive material is more preferable, further ensures first electrode 21 and the second electricity
The consistency of the electric conductivity in bending of pole 23.
Preferably, an at least groove 3 runs through first electrode 21 and second electrode 23 on the stacking direction of luminescence unit, i.e.,
The depth for being formed in at least groove 3 in first electrode 21 is equal with the thickness of first electrode 21, is formed in second electrode 23
On an at least groove 3 depth it is equal with the thickness of second electrode 23, as shown in figure 3, first electrode 21 and second electrode 23
It is divided into two pieces by groove 3, to reduce first electrode 21 and the continuous length of second electrode 23, and groove 3 can be more preferable
Release folding s tress.
Since first embodiment is corresponded to each other with the present embodiment, the present embodiment can work in coordination reality with first embodiment
It applies.The relevant technical details mentioned in first embodiment are still effective in the present embodiment, can reach in the first embodiment
Technical effect similarly may be implemented in the present embodiment, in order to reduce repetition, which is not described herein again.Correspondingly, this implementation
The relevant technical details mentioned in example are also applicable in first embodiment.
Present embodiment in terms of existing technologies, in first electrode and/or second electrode on to open up at least one recessed
Slot, at least a groove are parallel with first direction, and run through anode layer in a first direction；To in flexible display panels along the
When one direction is bent, at least groove for being parallel to first direction can discharge folding s tress, so that first electrode and/or second
It is not likely to produce crackle or fracture on electrode, improves the ability resistant to bending in first electrode and/or second electrode.Meanwhile at least
In one groove be filled with conductive material, thus ensure that in first electrode and/or second electrode bending when electric conductivity one
Cause property.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of flexible display panels characterized by comprising several luminescence units in array substrate, Mei Gesuo is arranged in
Stating luminescence unit includes the first electrode being stacked, luminescent layer, second electrode, the first electrode and/or second electricity
An at least groove is formed on extremely, an at least groove is parallel with first direction, and in said first direction through described
First electrode and/or the second electrode, the first direction is vertical with the stacking direction of the luminescence unit, and described at least one
Conductive material is filled in groove.
2. flexible display panels according to claim 1, which is characterized in that at least one groove is in the stacking direction
It is upper to run through the first electrode and/or the second electrode.
3. flexible display panels according to claim 1, which is characterized in that the conductive material is inorganic conductive material,
The preferably described inorganic conductive material is graphene.
4. flexible display panels according to claim 1, which is characterized in that the groove is close to the end of the array substrate
The area in face is less than or equal to the area of end face of the groove far from the array substrate.
5. flexible display panels according to claim 4, which is characterized in that the section of the groove is inverted trapezoidal.
6. flexible display panels according to claim 1, which is characterized in that the quantity of the groove is multiple and multiple
The groove is uniformly distributed in the first electrode and/or the second electrode.
7. flexible display panels according to claim 1, which is characterized in that the number of recesses be it is multiple, it is adjacent described
Spacing between groove is greater than or equal to 4 microns, and is less than or equal to 6 microns.
8. a kind of display device characterized by comprising flexible display panels described in any one of claims 1 to 7.
9. a kind of production method of flexible display panels characterized by comprising
One block array substrate is provided；
Several luminescence units are prepared in the array substrate；Each luminescence unit includes the first electricity being stacked
It is formed with an at least groove in pole, luminescent layer, second electrode, the first electrode and/or the second electrode, described at least one
Groove is parallel with first direction, and runs through the first electrode and/or the second electrode in said first direction, and described the
One direction is vertical with the stacking direction of the luminescence unit；
Conductive material is filled in an at least groove.
10. the production method of flexible display panels according to claim 9, which is characterized in that at least one groove exists
Run through the first electrode and/or the second electrode on the stacking direction.
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| CN110767094A (en) * | 2019-11-12 | 2020-02-07 | 昆山工研院新型平板显示技术中心有限公司 | Flexible cover plate and flexible display screen |
| CN111276495A (en) * | 2020-02-12 | 2020-06-12 | 武汉华星光电半导体显示技术有限公司 | Array substrate and preparation method thereof |
| CN112599699A (en) * | 2020-12-11 | 2021-04-02 | 北京维信诺科技有限公司 | Display panel, preparation method thereof and display device |
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