CN109148534A - display panel and electronic device - Google Patents
display panel and electronic device Download PDFInfo
- Publication number
- CN109148534A CN109148534A CN201810955884.4A CN201810955884A CN109148534A CN 109148534 A CN109148534 A CN 109148534A CN 201810955884 A CN201810955884 A CN 201810955884A CN 109148534 A CN109148534 A CN 109148534A
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- Prior art keywords
- bending section
- display panel
- backplane region
- curvature
- groove
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Classifications
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- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- 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
-
- 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
Abstract
The invention proposes a kind of display panel and electronic device, the display panel includes: flexible base board, and the flexible base board includes for the firstth area of pixel array, the secondth area to be arranged and connects buckled zone between firstth area and secondth area;Backsheet layer, side positioned at the flexible base board far from the pixel array, the backsheet layer includes the first backplane region, the second backplane region and third backplane region, first backplane region corresponds to firstth area, the third backplane region corresponds to secondth area, the second backplane region correspondence and the buckled zone;Wherein, alleviation stress members are provided on second backplane region.The present invention alleviates stress members by being arranged on second backplane region, enhances the bending performance of flexible base board buckled zone and the ability to bear of antibody Monoclonal, improves the service life of display panel.
Description
Technical field
The present invention relates to display fields, and in particular to a kind of display panel and electronic device.
Background technique
In flat panel display, Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) is aobvious
Show device have it is frivolous, actively shine, fast response time, angle of visibility is big, colour gamut is wide, brightness is high and many merits such as low in energy consumption, by
Gradually become the third generation display technology after liquid crystal display.Relative to LCD (Liquid crystal displays, liquid crystal
Show device), OLED has more power saving, and it is thinner, and the advantage that visual angle is wide, this is LCD incomparable.Currently, people are to display
Fine and smooth degree, that is, resolution requirement is higher and higher, but production high quality, high-resolution OLED display screen still suffer from many
Challenge.
With the development of display industry technology, user is higher and higher to the design requirement of display panel, such as narrow side
The design of frame.
Fig. 1 show a kind of film layer structure figure of display panel unfolded state, the display panel in the prior art
Backsheet layer, flexible base board 10, light emitting device layer 20 and thin-film encapsulation layer 30;Wherein, the flexible base board 10 includes for setting
Set the buckled zone 40 between the firstth area, the secondth area and connection firstth area and secondth area of pixel array;The back
Plate floor includes and corresponding first backplane region 50 in firstth area and third backplane region 60 corresponding with secondth area, and first
It is white space between backplane region 50 and third backplane region 60.I.e. in the prior art, the buckled zone 40 of the flexible base board 10
It is not provided with back board structure, although such structure improves the angle of flexible base board buckled zone bending, but also increase simultaneously curved
The probability of easy damaged, reduces the reliability of display module when bent area is bent.
Therefore, a kind of display panel is needed at present to solve the above problems.
Summary of the invention
The present invention provides a kind of display panel and electronic devices, to improve the bending of existing display panel buckled zone
Energy.
According to an aspect of the invention, there is provided a kind of display panel, comprising:
Flexible base board, the flexible base board include for being arranged described in the firstth area of pixel array, the secondth area and connection
Buckled zone between firstth area and secondth area;
Backsheet layer, the side positioned at the flexible base board far from the display panel display area, the backsheet layer include
First backplane region, the second backplane region and third backplane region, first backplane region correspond to firstth area, the third back
Plate area corresponds to secondth area, the second backplane region correspondence and the buckled zone;
Wherein, alleviation stress members are provided on second backplane region.
In display panel of the invention, the alleviation stress members are groove;
Wherein, second backplane region includes the first bending section, the second bending section and third bending section, and described first is curved
Tune is located at institute close to the third backplane region, second bending section close to first backplane region, the third bending section
State between the first bending section and the third bending section, the groove first bending section, second bending section and
The distribution density of the third bending section is different.
In display panel of the invention, when the radius of curvature of second bending section is less than or equal to first bending section
Radius of curvature and the third bending section radius of curvature when, the density of the groove is greater than institute in second bending section
The density of the groove in the first bending section is stated, the density of the groove is greater than the third bending section in second bending section
The density of the interior groove;
When the radius of curvature of second bending section is curved greater than the radius of curvature of first bending section and the third
When the radius of curvature of tune, the density of the groove is less than the groove in first bending section in second bending section
Density, the density of the groove is less than the density of the groove in the third bending section in second bending section.
In display panel of the invention, when the radius of curvature of second bending section is less than or equal to first bending section
Radius of curvature and the third bending section radius of curvature when, the thicknesses of layers of second bending section is less than described first
The thicknesses of layers of bending section, the thicknesses of layers of second bending section are less than the thicknesses of layers of the third bending section;
When the radius of curvature of second bending section is curved greater than the radius of curvature of first bending section and the third
When the radius of curvature of tune, the thicknesses of layers of second bending section is greater than the thicknesses of layers of first bending section, and described the
The thicknesses of layers of two bending sections is greater than the thicknesses of layers of the third bending section.
In display panel of the invention, the alleviation stress members are protrusion;
Wherein, second backplane region includes the first bending section, the second bending section and third bending section, and described first is curved
Tune is located at institute close to the third backplane region, second bending section close to first backplane region, the third bending section
State between the first bending section and the third bending section, the groove first bending section, second bending section and
The thickness distribution of the third bending section is different.
It is described convex on first bending section to the direction of second bending section in display panel of the invention
The thickness risen is gradually reduced, and on second bending section to the direction of the third bending section, the thickness of the protrusion is gradually
Increase.
In display panel of the invention, the protrusion on first bending section is bent with the third is located at
The protrusion in section corresponds;Or
The protrusion on first bending section is arranged with the bulge clearance being located on the third bending section
Column, the protrusion on first bending section is contacted with the third bending section, on the third bending section
The protrusion is contacted with first bending section.
In display panel of the invention, the protrusion exists only in second bending of first bending section and part
Duan Shang;Or
The protrusion exists only on the third bending section and part second bending section.
In display panel of the invention, first backplane region and the third backplane region are close to second backboard
The region in area is additionally provided with the alleviation stress members.
According to another aspect of the present invention, a kind of electronic device is additionally provided, including above-mentioned display module.
The utility model has the advantages that the present invention alleviates stress members by being arranged on second backplane region, flexible base board is enhanced
The bending performance of buckled zone and the ability to bear of antibody Monoclonal, improve the service life of 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 show a kind of film layer structure figure of existing display panel unfolded state;
Fig. 2 is the film layer structure figure of one display panel of the embodiment of the present invention;
Fig. 3 is the film layer structure figure of one display panel buckled zone of the embodiment of the present invention;
Fig. 4 is the distribution map of one second backplane region further groove of the embodiment of the present invention;
Fig. 5 is the film layer structure figure of two display panel buckled zone of the embodiment of the present invention;
Fig. 6 is the film layer structure figure of three display panel buckled zone of the embodiment of the present invention;
Fig. 7 is the distribution map of 3 second backplane region further groove of the embodiment of the present invention;
Fig. 8 is the film layer structure figure of four display panel buckled zone of the embodiment of the present invention;
Fig. 9 is the film layer structure figure of five display panel buckled zone of the embodiment of the present invention;
Figure 10 is the film layer structure figure of six display panel buckled zone of the embodiment of the present invention;
Figure 11 is the film layer structure figure of seven display panel buckled zone of the embodiment of the present invention;
Figure 12 is the film layer structure figure of eight display panel buckled zone of the embodiment of the present 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.
Fig. 2 show a kind of film layer structure figure of display panel of the present invention, and display panel includes:
Flexible base board 10, the flexible base board 10 include the firstth area, the secondth area and connection for pixel array to be arranged
Buckled zone 40 between firstth area and secondth area;In the present embodiment, shown flexible base board 10 includes flexible liner base
Plate and pel array layer.
Wherein, shown underlay substrate is fabricated from a flexible material, and the flexible material present invention does not limit, and optionally can be to have
Machine polymer;Preferably, the flexible material can be Kapton;Kapton is that performance is most in the world at present
Good film class insulating materials has stronger tensile strength, by pyromellitic acid anhydride and diaminodiphenyl ether highly polar
It is formed again through imidization in solvent through polycondensation and casting film-forming.
In addition, further including shining on the flexible base board 10 from the display panel can be can be seen that in figure
Device layer 20 and be located at the light emitting device layer 20 on encapsulated layer 30.
It should be understood that the display panel is divided into display area and the non-display area positioned at the display area, institute
It states display area and shows image;Wherein, firstth area is located at the display area of the display panel, secondth area and
Buckled zone 40 is located at the non-display area of the display panel.
Backsheet layer, the side positioned at the flexible base board 10 far from the display panel display area, the backsheet layer packet
The first backplane region 50, the second backplane region 70 and third backplane region 60 are included, first backplane region 50 corresponds to firstth area,
The third backplane region 60 corresponds to secondth area, the correspondence of the second backplane region 70 and the buckled zone 40;Wherein, described
Alleviation stress members are provided on second backplane region 70.
As shown in Figures 2 and 3, in display panel buckled zone 40 of the invention, the alleviation stress members are groove 80;Its
In, second backplane region 70 include the first bending section 701, the second bending section 702 and third bending section 703, described first
Bending section 701 is close to first backplane region 50, and the third bending section 703 is close to the third backplane region 60, and described second
For bending section 702 between first bending section 701 and the third bending section 703, the groove 80 is curved described first
The distribution density of tune 701, second bending section 702 and the third bending section 703 is different.
As shown in figure 3, the radius of curvature of the buckled zone 40 corresponding to second bending section 702, is less than or equal to institute
It states described corresponding to the radius of curvature of the buckled zone 40 and the third bending section 703 corresponding to the first bending section 701
The radius of curvature of buckled zone 40;From mechanical analysis it is found that suffered by the buckled zone 40 corresponding to second bending section 702
To bending stress be maximum, the i.e. most easy fracture of the flexible base board 10 in this region;
It should be understood that the bending that the bending stress of second bending section 702 is greater than first bending section 701 is answered
Power, the bending stress of second bending section 702 are greater than the bending stress of the third bending section 703;
Therefore, as shown in figure 4, the density of the groove 80 is greater than first bending section in second bending section 702
The density of the groove 80 in 701, the density of the groove 80 is greater than the third bending section in second bending section 702
The density of the groove 80 in 703;I.e. corresponding 80 comparatively dense of groove in the biggish region of bending stress, bending stress are smaller
The corresponding groove 80 in region it is sparse, reduce the bending stress in each region, avoid stress concentration, improve described
The bending performance of flexible base board 10.
On the basis of this embodiment, Fig. 5 show a kind of film layer of the display panel buckled zone 40 of the embodiment of the present invention two
Structure chart, the bending stress being subject to according to each region it is of different sizes, second cover board area for reducing inside can be passed through
Thicknesses of layers is to avoid stress concentration;
In the present embodiment, the thicknesses of layers of second bending section 702 is less than the film layer thickness of first bending section 701
Degree, the thicknesses of layers of second bending section 702 are less than the thicknesses of layers of the third bending section 703;
It should be understood that correspond to the buckled zone 40 corresponding to biggish second bending section 702 of bending stress,
The thicknesses of layers for reducing second bending section 702 guarantees that the neutral axis of the buckled zone 40 is the arc of a smooth transition
Line improves the buckle resistance energy of the buckled zone 40.
Fig. 6 show a kind of film layer structure figure of the display panel buckled zone 40 of the embodiment of the present invention three, in the present embodiment,
In order to obtain narrower frame, in bending, the buckled zone 40 is bent into one section of circular arc, and the radian at both ends can be less than institute
State the radian at 40 middle part of buckled zone;The radius of curvature of the buckled zone 40 corresponding to i.e. described second bending section 702 is greater than institute
It states described corresponding to the radius of curvature of the buckled zone 40 and the third bending section 703 corresponding to the first bending section 701
The radius of curvature of buckled zone 40;From mechanical analysis it is found that first bending section 701 and the third bending section 703 pair
Bending stress suffered by the buckled zone 40 answered is maximum, the i.e. most easy fracture of the flexible base board 10 in this region;
It should be understood that the bending that the bending stress of second bending section 702 is less than first bending section 701 is answered
Power, the bending stress of second bending section 702 are less than the bending stress of the third bending section 703;
Therefore, as shown in fig. 7, the density of the groove 80 is less than first bending section in second bending section 702
The density of the groove 80 in 701, the density of the groove 80 is less than the third bending section in second bending section 702
The density of the groove 80 in 703;I.e. corresponding 80 comparatively dense of groove in the biggish region of bending stress, bending stress are smaller
The corresponding groove 80 in region it is sparse, reduce the bending stress in each region, avoid stress concentration, improve described
The bending performance of flexible base board 10.
On the basis of this embodiment, Fig. 8 show a kind of film layer of the display panel buckled zone 40 of the embodiment of the present invention four
Structure chart, the bending stress being subject to according to each region it is of different sizes, second cover board area for reducing inside can be passed through
Thicknesses of layers is to avoid stress concentration;
In the present embodiment, the thicknesses of layers of second bending section 702 is greater than the film layer thickness of first bending section 701
Degree, the thicknesses of layers of second bending section 702 are greater than the thicknesses of layers of the third bending section 703;
It should be understood that corresponding to biggish first bending section 701 of bending stress and 703 institute of the third bending section
The corresponding buckled zone 40 reduces the thicknesses of layers of first bending section 701 and the third bending section 703, protects
The neutral axis for demonstrate,proving the buckled zone 40 is the camber line of a smooth transition, improves the buckle resistance energy of the buckled zone 40.
Fig. 9 show a kind of film layer structure figure of the display panel buckled zone 40 of the embodiment of the present invention five, shows in of the invention
Show in panel, is also set in first backplane region 50 and the third backplane region 60 close to the region of second backplane region 70
Be equipped with the alleviation stress members, i.e., the described groove 80, i.e. region 704 and region 705 in Fig. 9;It should be understood that described
One backplane region 50 and the third backplane region 60 and 70 boundary of the second backplane region are bending stress start region, in order to
Prevent unexpected deformation from the flexible base board 10 is broken, the groove 80 is arranged in place deformation occurs, is preferably promoted
The buckle resistance energy of the flexible base board 10.
It should be understood that embodiment one is into embodiment five, and in the top view direction of display panel, the shape of the groove 80
Shape is but is not limited to circle, can also be square, one of rectangle, triangle or irregular shape etc. or a kind of
Above combination.
In embodiment one into embodiment five, it is possible to understand that, it can will be corresponding to the biggish bending section of bending stress
The openings of sizes of the groove 80 is arranged bigger, and the opening of the groove 80 corresponding to the lesser bending section of bending stress is big
It is small to can be set smaller, it is poor to be sequentially reduced bending stress corresponding to different zones.
In display panel of the invention, the alleviation stress members are protrusion 90;Wherein, described raised 90 described
The thickness distribution of one bending section 701, second bending section 702 and the third bending section 703 is different;In the present embodiment
In, on first bending section 701 to the direction of second bending section 702, raised 90 thickness is gradually reduced,
On second bending section 702 to the direction of the third bending section 703, raised 90 thickness is gradually increased.
Figure 10 show the film layer structure figure of display panel described in embodiment six, on first bending section 701
Described raised 90 correspond with described raised 90 on the third bending section 703, and contact with each other each other;It is excellent
Choosing, each corresponding two raised 90 thickness is identical;Such as in Figure 10, two raised 90 thickness of head and the tail then phase
Together.
It should be understood that be located at first bending section 701 on described raised 90 be located at the third bending section 703
On described raised 90 contact with each other, and the buckled zone 40 of the respectively corresponding flexible base board 10 is supported, so that described curved
Bent area 40 forms a fixed radian, reduces the bending stress of buckled zone 40, avoids stress concentration, improves the flexible base
10 buckle resistance energy of plate.
Figure 11 show the film layer structure figure of display panel described in embodiment seven, on first bending section 701
Described raised 90 are alternatively arranged with described raised 90 on the third bending section 703;Wherein, it is located at first bending
Described raised 90 in section 701 contact with the third bending section 703, the protrusion on the third bending section 703
90 contact with first bending section 701.
It should be understood that be located on each bending section described raised 90 are alternatively arranged;Bending is in buckled zone 40
When state, described raised 90 on third bending section 703 be interspersed on first bending section 701 described raised 90 it
Between, and contacted with second backplane region 70;So that the buckled zone 40 forms a fixed radian, reduce the curved of buckled zone 40
Transverse stress avoids stress concentration, improves the 10 buckle resistance energy of flexible base board.
In display panel of the invention, described raised 90 can be only present in first bending section 701 and part institute
It states on the second bending section 702;Or described raised 90 can be only present in the third bending section 703 and part it is described second bending
In section 702.
Figure 12 show the film layer structure figure of display panel described in embodiment eight, and described raised 90 exist only in described first
On bending section 701 and part second bending section 702, in first bending section 701 to second bending section 702
On direction, raised 90 thickness is gradually reduced;
It should be understood that when the display panel is in bending state, each described raised 90 and corresponding described
The contact of two backplane regions 70 reduces the bending stress of buckled zone 40, avoids so that the buckled zone 40 forms a fixed radian
10 buckled zone of flexible base board, 40 stress is concentrated.
In display panel of the invention, in first backplane region and the third backplane region close to second back
The region in plate area is additionally provided with the alleviation stress members, i.e., the described protrusion;It should be understood that first backplane region and institute
Stating third backplane region and second backplane region boundary is bending stress start region, and unexpected deformation makes institute in order to prevent
Flexible base board fracture is stated, the protrusion is arranged in place deformation occurs, preferably improves the buckle resistance of the flexible base board
Energy.
It should be understood that embodiment six, into embodiment nine, raised 90 shape is but is not limited to circular cone, may be used also
Think square, cuboid etc..
It should be understood that embodiment six, into embodiment nine, raised 90 distribution density does not limit specifically, it can
To be arranged according to specific structure.
According to a further aspect of the invention, a kind of electronic device is additionally provided, the electronic device includes the display
Panel.
The working principle of the display module is similar to the working principle of the display panel, the work of the electronic device
Principle can specifically refer to the working principle of the display panel, be not described herein.
The invention proposes a kind of display panel and electronic device, the display panel includes: flexible base board, the flexibility
Substrate includes for the firstth area of pixel array, the secondth area to be arranged and connects curved between firstth area and secondth area
Bent area;Backsheet layer, the side positioned at the flexible base board far from the pixel array, the backsheet layer include the first backplane region,
Second backplane region and third backplane region, first backplane region correspond to firstth area, and the third backplane region corresponds to
Secondth area, the second backplane region correspondence and the buckled zone;Wherein, alleviation stress is provided on second backplane region
Component.The present invention alleviates stress members by being arranged on second backplane region, enhances the bending of flexible base board buckled zone
The ability to bear of performance and antibody Monoclonal improves the service life of display panel.
In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit
The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention subjects to the scope of the claims.
Claims (10)
1. a kind of display panel characterized by comprising
Flexible base board, the flexible base board include for the firstth area of pixel array, the secondth area and connection described first to be arranged
Buckled zone between area and secondth area;
Backsheet layer, the side positioned at the flexible base board far from the pixel array, the backsheet layer include the first backplane region, the
Two backplane regions and third backplane region, first backplane region correspond to firstth area, and the third backplane region corresponds to institute
State the secondth area, the second backplane region correspondence and the buckled zone;
Wherein, alleviation stress members are provided on second backplane region.
2. display panel according to claim 1, which is characterized in that the alleviation stress members are groove;
Wherein, second backplane region includes the first bending section, the second bending section and third bending section, first bending section
Close to first backplane region, for the third bending section close to the third backplane region, second bending section is located at described the
Between one bending section and the third bending section, the groove is in first bending section, second bending section and described
The distribution density of third bending section is different.
3. display panel according to claim 2, which is characterized in that when second bending section radius of curvature be less than etc.
In first bending section radius of curvature and the third bending section radius of curvature when, it is described in second bending section
The density of groove is greater than the density of the groove in first bending section, and the density of the groove is big in second bending section
In the density of the groove in the third bending section;
When radius of curvature of the radius of curvature of second bending section greater than first bending section and the third bending section
Radius of curvature when, the density of the groove is less than the close of the groove in first bending section in second bending section
It spends, the density of the groove is less than the density of the groove in the third bending section in second bending section.
4. display panel according to claim 3, which is characterized in that when the radius of curvature of second bending section is less than or equal to
When the radius of curvature of first bending section and the radius of curvature of the third bending section, the film layer of second bending section is thick
Degree is less than the thicknesses of layers of first bending section, and the thicknesses of layers of second bending section is less than the film of the third bending section
Thickness degree;
When radius of curvature of the radius of curvature of second bending section greater than first bending section and the third bending section
Radius of curvature when, the thicknesses of layers of second bending section is greater than the thicknesses of layers of first bending section, and described second is curved
The thicknesses of layers of tune is greater than the thicknesses of layers of the third bending section.
5. display panel according to claim 1, which is characterized in that the alleviation stress members are protrusion;
Wherein, second backplane region includes the first bending section, the second bending section and third bending section, first bending section
Close to first backplane region, for the third bending section close to the third backplane region, second bending section is located at described the
Between one bending section and the third bending section, the groove is in first bending section, second bending section and described
The thickness distribution of third bending section is different.
6. display panel according to claim 5, which is characterized in that in first bending section to second bending section
Direction on, the thickness of the protrusion is gradually reduced, described on second bending section to the direction of the third bending section
The thickness of protrusion gradually increases.
7. display panel according to claim 6, which is characterized in that on first bending section it is described protrusion with
The protrusion on the third bending section corresponds;Or
The protrusion on first bending section is arranged with the bulge clearance being located on the third bending section, position
It is contacted in the protrusion on first bending section with the third bending section, it is described convex on the third bending section
It rises and is contacted with first bending section.
8. display panel according to claim 5, which is characterized in that the protrusion exist only in first bending section and
On second bending section of part;Or
The protrusion exists only on the third bending section and part second bending section.
9. display panel according to claim 1, which is characterized in that first backplane region and the third backplane region
Region close to second backplane region is additionally provided with the alleviation stress members.
10. a kind of electronic device, which is characterized in that including display module as claimed in claim 9.
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Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110047881A (en) * | 2019-03-29 | 2019-07-23 | 武汉华星光电半导体显示技术有限公司 | Display panel and display panel production method |
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