CN114078384A - Display panel and mobile terminal - Google Patents

Display panel and mobile terminal Download PDF

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Publication number
CN114078384A
CN114078384A CN202111293343.8A CN202111293343A CN114078384A CN 114078384 A CN114078384 A CN 114078384A CN 202111293343 A CN202111293343 A CN 202111293343A CN 114078384 A CN114078384 A CN 114078384A
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display
display panel
bridge structure
bending
display area
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CN202111293343.8A
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CN114078384B (en
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何平
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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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
    • 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
    • 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

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The embodiment of the application discloses a display panel and a mobile terminal, wherein the display panel comprises a plane display area, a plurality of side bending display sub-areas and a plurality of corner bending display sub-areas, and a plurality of first island-shaped structures and a plurality of stretching bridge structures connected with the first island-shaped structures are arranged in the corner bending display sub-areas, so that the elastic modulus of one stretching bridge structure close to the plane display area is smaller than that of the other stretching bridge structure far away from the edge of the display panel in any two stretching bridge structures with different distances from the plane display area; the technical problem of redundant part can appear in four corners when carrying out the 3D laminating of flexible display panel has effectively been solved to this application for but display panel's tensile property can adapt to with the crooked degree of curved surface, and curved surface display panel after the laminating, especially corner display area are more for leveling, do not produce the fold, promote display effect and user experience and feel.

Description

Display panel and mobile terminal
Technical Field
The application relates to the technical field of display, in particular to a display panel and a mobile terminal.
Background
Along with the development of comprehensive screen technique, the user requires more and more to the positive effective display area of complete machine fuselage, in order to accomplish bigger screen to account for than, various techniques have been adopted, wherein the hyperbolic screen that the edge adopted the laminating of 3D surface cover plate about wherein also is one of them implementation, this kind of hyperboloid can make the frame reduce as far as possible from the vision, along with the angle of 3D surface cover plate is close to 90 gradually, the effect of frameless is more obvious, has apparent promotion to visual experience. However, the above method is still not perfect, and a real 100% full screen cannot be realized, but if the four edges and four corner portions of the display panel are all in a curved surface form, and are matched with the lifting or under-screen camera, the real full screen can be visually realized. However, the conventional flexible Organic light emitting semiconductor (OLED) Display panel is difficult to implement because it is intended to implement a four-curved surface. Redundant parts can appear in four corners when carrying out the 3D laminating in flexible display panel, and this part can lead to the laminating fold, influences display effect.
Disclosure of Invention
The embodiment of the application provides a display panel, it can realize the level and smooth laminating of 3D panel for 3D display panel does not appear the fold in the corner district, promotes 3D display panel's no frame effect, promotes user experience degree.
The embodiment of the application provides a display panel, display panel includes the flat display district and is located the display area of buckling of flat display district week side, the display area of buckling includes that a plurality of sides buckle display subregion and a plurality of corner buckle display subregion, arbitrary adjacent two the side is buckled and is equipped with one between the display subregion the corner buckles display subregion, display panel includes:
a plurality of first island-shaped structures located in the corner bending display sub-area, wherein each first island-shaped structure is provided with at least one pixel unit;
a plurality of tensile bridge structures for connecting two adjacent first island-shaped structures;
in the bending display area, any two stretching bridge structures with different distances from the plane display area are arranged, wherein the elastic modulus of one stretching bridge structure close to the plane display area is smaller than that of the other stretching bridge structure far away from the edge of the display panel.
Optionally, in a direction from the planar display area to the bending display area, a plurality of stretching bridge structure groups are arranged in the bending display area, and each stretching bridge structure group includes a plurality of stretching bridge structures;
in any two stretching bridge structure groups in the bending display area, the elastic modulus of one stretching bridge structure in the stretching bridge structure group close to the plane display area is smaller than that of the other stretching bridge structure in the stretching bridge structure group far away from the plane display area.
Optionally, in the bending display area, in any two of the stretching bridge structure groups, the length of one of the stretching bridge structures in the stretching bridge structure group close to the planar display area is smaller than the length of the other stretching bridge structure in the stretching bridge structure group far from the planar display area.
Optionally, each corner bending display sub-area includes a corresponding stress boundary line, and the stress boundary line passes through the center of the planar display area and a boundary intersection point of two side bending display sub-areas adjacent to the corner bending display sub-area;
in any one of the tensile bridge structure groups, in any two of the tensile bridge structures located on one side of the stress dividing line, the length of one of the tensile bridge structures close to the side bending subarea is smaller than the length of the other tensile bridge structure far away from the side bending subarea.
Optionally, the side bending display sub-area includes a corresponding bending line, the display panel in the side bending display sub-area includes a plurality of second island-shaped structures, and two adjacent second island-shaped structures are connected by a stretching bridge structure in a direction forming a preset included angle with the bending line;
in any two stretching bridge structure groups, the length of one stretching bridge structure in the stretching bridge structure group close to the plane display area is smaller than that of the other stretching bridge structure in the stretching bridge structure group far away from the plane display area.
Optionally, in the corner bending display sub-area, any two of the stretching bridge structures have different distances from the plane display area, wherein one of the stretching bridge structures close to the plane display area has a diameter smaller than that of the other stretching bridge structure far from the plane display area.
Optionally, in the corner bending display sub-area, an orthographic projection of the first island-shaped structure on the display panel includes any one of a circle and a sector.
Optionally, in the corner bending display sub-area, the area of the orthographic projection of the first island-shaped structure on the display panel gradually increases as the distance from the flat display area is closer.
Optionally, the closer to the flat display area, the smaller the arrangement density of the plurality of first island-shaped structures on the display panel.
In addition, an embodiment of the present application further provides a mobile terminal, including the display panel and the terminal main body described in any of the above embodiments, where the terminal main body and the display panel are combined into a whole.
The beneficial effects of the invention at least comprise:
through divide into the flat display area with display panel and be located the display area of buckling of the week side of flat display area arbitrary two distances in the display area of buckling the flat display area is apart from different in the tensile bridge structure, one of them is close to the flat display area the elastic modulus of tensile bridge structure is greater than another and keeps away from the flat display area the elastic modulus of tensile bridge structure for the bending property of the display panel of the display area of buckling can with the curved surface structure phase-match, and then when display panel carries out the 3D laminating, display panel can smooth laminating curved surface, reaches better 3D laminating effect, makes the display panel in limit angle district not produce the fold, and the complete machine reaches complete frameless's comprehensive screen effect, promotes user's visual experience greatly.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a flexible display panel implementing a four-curved-surface structure in the prior art;
fig. 2 is a schematic diagram illustrating a stretchable flexible display panel implementing a four-curved-surface structure according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a stretchable flexible display panel according to another embodiment of the present application being attached to a four-curved-surface structure;
FIG. 4 is an enlarged view at A in FIG. 3;
FIG. 5 is an enlarged view at B in FIG. 3;
FIG. 6 is an enlarged view at C in FIG. 3;
fig. 7 is a schematic diagram of a pixel arrangement of a first island structure according to an embodiment of the present disclosure;
FIG. 8 is an enlarged view of FIG. 3 at C in another embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a display panel and a mobile terminal. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments. In addition, in the description of the present application, the term "including" means "including but not limited to". The terms first, second, third and the like are used merely as labels, and do not impose numerical requirements or an established order. Various embodiments of the invention may exist in a range of versions; it is to be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as an inflexible limitation on the scope of the invention; accordingly, the described range descriptions should be considered to have specifically disclosed all the possible sub-ranges as well as individual numerical values within that range. For example, it is contemplated that the description of a range from 1 to 6 has specifically disclosed sub-ranges such as, for example, from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as individual numbers within a range such as, for example, 1, 2, 3, 4, 5, and 6, as applicable regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any number (fractional or integer) recited within the indicated range.
At present, in order to reduce the frame as much as possible in view, the display panel realizes the effect of a narrow frame, and the frame part of the display panel is gradually bent, so that the bending angle of the display panel is gradually close to 90 degrees, and a better effect without the frame is achieved. In order to realize the narrow frame effect as much as possible, four edges and corner portions of the display panel all adopt a curved surface form, when the four curved surfaces of the conventional flexible curved surface screen are attached, redundant portions are easy to appear at display positions with different bending directions, such as four corner areas, as shown in fig. 1, so that the attachment is wrinkled, and the display effect is influenced.
In order to solve the technical problem, the application provides a display panel with different tensile properties for different deformation areas, and the display panel can solve the technical problem that when the whole flexible display panel is integrally attached, redundant parts are easily generated in corner areas, so that wrinkles are easily generated due to the fact that the flexible display panel is not tightly attached, and the display panel has a good display effect.
Referring to fig. 2 to 8, an embodiment of the present application provides a display panel, and specifically as shown in fig. 2 and 3, the display panel includes a planar display area AA and a bending display area located around the planar display area AA, the bending display area includes a plurality of side bending display sub-areas BA1 and a plurality of corner bending display sub-areas BA2, and a corner bending display sub-area BA2 is disposed between any two adjacent side bending display sub-areas BA 1;
the display panel is a flexible display panel, and the flexible display panel includes a flexible substrate, a plurality of island structures and a bridge structure connecting the island structures, wherein the plurality of island structures are arranged on the flexible substrate in an array manner, and adjacent island structures are connected by the bridge structure; the plurality of pixel units 101 are distributed on the plurality of island structures, and the bridge structure has a plurality of signal lines which realize display of the display panel by supplying signals to the pixel units 101 located on the island structures.
The corresponding bridge structures have different structures according to whether the display panel needs tensile properties, for example, the display panel of the flat display area AA does not need to be stretched, the bridge structure connecting the island structures of the flat display area AA may be a signal line without tensile properties, and the display panel of the flat display area AA may be a rigid structure.
Specifically, in this embodiment, as shown in fig. 3 and 4, the display panel of the flat display area AA does not need to have a stretching property, the display panel of the flat display area AA may be a rigid structure, and the bridge structure is a linear structure, the display panel of the flat display area AA may be provided with an island-shaped structure D0, and adjacent third island-shaped structures D0 may be electrically connected by a rigid bridge structure E which is linear and has no stretching property, so as to implement a display function.
Specifically, the display panel of the bending display area has at least one bending direction, the bending display area comprises a plurality of side bending display sub-areas BA1 and corner bending display sub-areas BA2, the display panel of the side bending display sub-area BA1 has one bending direction, and the display panel of the corner bending display sub-area BA2 has multiple bending directions.
Specifically, the number of the side bending display sub-areas BA1 in this embodiment is matched with the number of the sides of the specific curved display panel, the display panel may be a triangular curved display panel with three sides, a quadrilateral curved display panel with four sides, a pentagonal curved display panel with five sides, or the like, and the number of the specific side bending display sub-areas BA1 is adjusted according to actual production needs.
As shown in fig. 2, 5, and 6, the bending display area in the present application includes a plurality of side bending display sub-areas BA1 and a plurality of corner bending display sub-areas BA2, and one corner bending display sub-area BA2 is disposed between any two adjacent side bending display sub-areas BA 1.
The display panel includes:
a plurality of first island-shaped structures D1 located in the corner bending display sub-area BA2, wherein at least one pixel unit 101 is disposed on each first island-shaped structure D1;
specifically, the first island-shaped structure D1 is located in the corner display sub-area, and the shape of the first island-shaped structure D1 is not fixed, and may be a circle, a rectangle, a diamond, a polygon, or a fan, and may be specifically adjusted according to actual needs.
Specifically, the areas of the plurality of first island structures D1 may be equal or may not be equal.
Specifically, as shown in fig. 7, the pixel unit 101 disposed on the first island-shaped structure D1 may include a blue sub-pixel unit, a red sub-pixel unit and a green sub-pixel unit, wherein the area of the blue sub-pixel unit is larger than the areas of the red sub-pixel unit and the green sub-pixel unit, and the blue sub-pixel unit may be disposed in a direction away from the planar display area AA or in a direction close to the planar display area AA.
A plurality of tensile bridge structures F for connecting two adjacent first island structures D1;
specifically, the stretching bridge structure F is one of bridge structures, and the stretching bridge structure F has a certain tensile modulus, and when the flexible display panel is stretched, two side edges of the stretching bridge structure F, which are not connected to the first island-shaped structures D1, can be stretched and extended, so that the stretching of the display panel is realized, and further, wrinkle-free attachment of the curved display screen is realized.
In the bending display area, as shown in fig. 6, in any two stretching bridge structures F with different distances from the flat display area AA, the elastic modulus of one stretching bridge structure F close to the flat display area AA is smaller than the elastic modulus of the other stretching bridge structure F far from the edge of the display panel. For example, as shown in fig. 6, the third tensile bridge structure f3 has a lower modulus of elasticity than the fourth tensile bridge structure f 4.
Specifically, in the bending display area, further in the corner bending display sub-area BA2, in the direction perpendicular to the bending direction, the farther away from the planar display area AA, the larger the elastic modulus required by the corresponding display panel is, and therefore the bending modulus required by the corresponding tensile bridge structure F also needs to be larger, so as to implement the smooth attachment of the display panels corresponding to different tensile strengths.
It should be noted that, in the bending display area, for example, in the side display sub-area, there is only one bending direction; in the corner bending subareas, a plurality of bending directions are provided, and in the direction perpendicular to the bending direction, the farther the distance from the flat display area AA is, the higher the tensile strength of the display panel in the corresponding area is;
therefore, according to the change trend, the stretching bridge structure F with different elastic moduli is arranged, the smooth attaching of the display panel of the corner display sub-area can be realized, and wrinkles are not easy to generate, so that the display effect is good.
It can be understood that, in this embodiment, the display panel is divided into the planar display area AA and the bending display area located around the planar display area AA, so that any two distances in the bending display area AA are different from each other in the stretching bridge structure F, one of the two distances is close to the planar display area AA, and the elastic modulus of the stretching bridge structure F is greater than that of the other one of the two distances is away from the planar display area AA, so that the display panel in the bending area has different bending performances at different positions, and the display panel is in a four-curved-surface display screen, so that the display panel can be effectively and smoothly attached to a curved surface, a better 3D attachment effect can be achieved, no wrinkle is generated, the complete machine achieves a complete frameless full screen effect, and visual experience of a user is greatly improved.
In an embodiment, in a direction from the planar display area AA to the bending display area, a plurality of stretching bridge structure groups are disposed in the bending display area, and each stretching bridge structure group includes a plurality of stretching bridge structures F;
in any two stretching bridge structure groups in the bending display area, the elastic modulus of the stretching bridge structure F in one stretching bridge structure group close to the plane display area AA is smaller than that of the stretching bridge structure F in the other stretching bridge structure group far away from the plane display area AA; for example, as shown in fig. 5, the first tensile bridge structure f1 has a modulus of elasticity that is less than the modulus of elasticity of the second tensile bridge structure f 2.
Specifically, in the side bending subarea, a plurality of second island structures D2 are included, and the adjacent second island structures D2 may be connected by a tensile bridge structure F or a rigid bridge structure E without tensile properties.
Specifically, as shown in fig. 2, the display panel of the side bending sub-region has a bending direction perpendicular to the direction from the planar display region AA to the bending display region, in this embodiment, as shown in fig. 2 and 5, in the side bending sub-region, the rigid bridge structures E without tensile properties are all parallel to the bending direction of the display panel of the side bending sub-region, and the tensile bridge structures F are perpendicular to the bending direction of the display panel of the side bending sub-region.
Therefore, according to the variation trend, the stretching bridge structure F with different elastic moduli is arranged, so that the smooth attachment of the display panel of the side bending sub-area can be realized, and the display effect is good.
Specifically, at the intersection of the flat display area AA and the side bending display sub-area BA1, the third island-shaped structure D0 and the second island-shaped structure D2 are connected by the tensile bridge structure F.
Specifically, the elastic modulus of the tensile bridge structures F in the tensile bridge structure group may be equal, or may be adjusted according to the actual bending condition of the display panel.
It can be understood that, in the bending display area, by providing a plurality of stretching bridge structure groups in the direction from the planar display area AA to the bending display area, in any two stretching bridge structure groups, the elastic modulus of one stretching bridge structure F in the stretching bridge structure group close to the planar display area AA is smaller than the elastic modulus of the other stretching bridge structure F in the stretching bridge structure group far from the planar display area AA, so that the display panel can realize the smooth attachment of a four-curved-surface display panel according to the requirement of bending performance.
It should be noted that the elastic model of the stretching bridge structure F can be controlled by the length of the stretching bridge structure F, the curvature of the S-shape of the bending of the stretching bridge structure F, and the diameter of the stretching bridge structure F.
In an embodiment, in the bending display area, in any two of the stretching bridge structure groups, a length of the stretching bridge structure F in one of the stretching bridge structure groups close to the planar display area AA is smaller than a length of the stretching bridge structure F in the other stretching bridge structure group far from the planar display area AA.
It can be understood that, the adjustment of tensile bridge construction F elastic modulus can be realized through the length of the tensile bridge construction F of adjustment, make the display panel who buckles the display area have different bending performance in the position of difference, make display panel in four curved surface display screens, make display panel can the effective smooth crooked curved surface of laminating, can reach better 3D laminating effect, do not produce the fold, and then make the complete machine reach complete frameless ' S comprehensive screen effect, promote user ' S visual experience greatly, for the curvature of the diameter of adjusting tensile bridge or S type, it is more convenient to carry out elastic modulus ' S adjustment through the length of adjusting tensile bridge construction F, maneuverability is stronger in actual production, it is higher to adjust the precision.
In one embodiment, as shown in fig. 2, each of the corner bending display sub-areas BA2 includes a corresponding stress boundary line BL passing through the center of the planar display area AA and the boundary intersection point of the two side bending display sub-areas BA1 adjacent to the corner bending display sub-area BA 2;
in any one of the tensile bridge structure groups, as shown in fig. 6, in any two of the tensile bridge structures F located on one side of the stress boundary line BL, the length of one of the tensile bridge structures F close to the lateral bending sub-region is smaller than the length of the other tensile bridge structure F far away from the lateral bending sub-region. For example, as shown in fig. 6, the modulus of elasticity of the fifth tensile bridge structure f5 is less than the modulus of elasticity of the fourth tensile bridge structure f 4.
Specifically, in the direction from the side bending display sub-area BA1 to the stress boundary line BL, the degree of deformation of the display panel gradually increases, and the required elastic modulus also gradually increases.
It can be understood that, in the direction from the side bending display sub-area BA1 to the stress boundary line BL, the elastic modulus of the tensile bridge structure F gradually increases according to the bending stress applied to the display panel, so that even if the bending degree of the display panel increases, the bending stress applied to the internal wiring of the display panel is still evenly dispersed, the display panel in the corner area is effectively prevented from being locally cracked due to uneven bending stress, and the service life of the display panel is effectively prolonged.
In an embodiment, the side bending display sub-area BA1 includes a corresponding bending line CL, the display panel in the side bending display sub-area BA1 includes a plurality of second island-like structures D2, and two adjacent second island-like structures D2 are connected by a stretching bridge structure F in a direction forming a predetermined included angle with the bending line CL;
in any two of the stretching bridge structure groups in the side bending display sub-area BA1, the length of the stretching bridge structure F in one of the stretching bridge structure groups close to the planar display area AA is smaller than the length of the stretching bridge structure F in the other stretching bridge structure group far from the planar display area AA.
Specifically, the preset included angle may be 90 °.
Specifically, the display panel of the side bending sub-area has a bending direction, the bending direction is perpendicular to the direction from the plane display area AA to the bending display area, in the side bending sub-area, the rigid bridge structures E without tensile properties are all parallel to the bending direction of the display panel of the side bending sub-area, and the tensile bridge structures F form an included angle of 90 degrees with the bending direction of the display panel of the side bending sub-area.
Therefore, according to the variation trend, the stretching bridge structure F with different elastic moduli is arranged, so that the smooth attachment of the display panel of the side bending sub-area can be realized, and the display effect is good.
Specifically, at the intersection of the side bending display sub-area BA1 and the corner bending display sub-area BA2, the first island-shaped structure D1 and the second island-shaped structure D2 are connected by the tensile bridge structure F.
It can be understood that, in the bending display area, by providing a plurality of stretching bridge structure groups in the direction from the planar display area AA to the bending display area, in any two stretching bridge structure groups, the elastic modulus of one stretching bridge structure F in the stretching bridge structure group close to the planar display area AA is smaller than the elastic modulus of the other stretching bridge structure F in the stretching bridge structure group far from the planar display area AA, so that the display panel can realize the smooth attachment of a four-curved-surface display panel according to the requirement of bending performance.
In one embodiment, in the corner bending display sub-area BA2, any two of the stretching bridge structures F having different distances from the flat display area AA, a diameter of one stretching bridge structure F near the flat display area AA is smaller than a diameter of the other stretching bridge structure F far from the flat display area AA.
It can be understood that, through adjusting tensile bridge structure F's diameter, can correspond the elasticity modulus of tensile bridge structure F of adjustment for it can laminate according to the bending strength requirement of the different regions of different display panel, realizes that display panel forms four curved surface screen rear surface and levels, and no fold and display effect is good.
In an embodiment, within the corner bending display sub-area BA2, an orthographic projection of the first island-shaped structure D1 on the display panel includes any one of a circle or a sector.
It can be understood that the first island-shaped structure D1 is arranged in a circular shape, so that when the display panel with the corner bending display sub-area BA2 is bent, the stretching force of the stretching bridge structure F on the first island-shaped structure D1 is more uniform; set up first island structure D1 into fan-shaped for the display panel of corner bending display subregion BA2 is when crooked, and first island structure D1 can more laminate the display panel of corner bending display subregion BA2, effectively reduces the thickness of the display panel of corner bending display subregion BA2, reduces the gap between the first island structure D1 that the display panel is last adjacent, can promote user experience and feel.
In an embodiment, within the corner bending display sub-area BA2, the area of the first island-shaped structure D1 projected on the display panel gradually increases as the distance from the planar display area AA is closer.
It can be understood that, as shown in fig. 8, especially when the first island-shaped structure D1 is configured as a fan-shaped structure, the orthographic projection area of the first island-shaped structure D1 on the display panel is gradually increased, so as to compensate for the display gap generated after the flexible display panel is stretched, and improve the display uniformity of the display panel in the bending area.
In an embodiment, the closer to the flat display area AA, the lower the arrangement density of the first island structures D1 on the display panel.
It can be understood that, because the display panel is stretched to the greatest extent in the corner bending display sub-area BA2, the density of the first island-shaped structures D1 is correspondingly set according to the corresponding tensile strength, and the greater the stretching degree, the greater the density of the first island-shaped structures D1 is, so that even in the area with the greatest deformation, the display effect of the display panel is not greatly changed, the uniformity of the display panel at the curved surface position is improved, and a better display effect is achieved.
In addition, an embodiment of the present application further provides a mobile terminal, including the display panel and the terminal main body described in any of the above embodiments, where the terminal main body and the display panel are combined into a whole.
In summary, the display panel is divided into the flat display area AA and the bending display area located on the periphery of the flat display area AA, any two distances from the flat display area AA to the stretching bridge structure F with different distances are included in the bending display area, one of the two distances is close to the flat display area AA, and the elastic modulus of the stretching bridge structure F is larger than that of the other distance is far away from the flat display area AA, so that the bending performance of the display panel in the bending display area can be matched with that of the curved surface structure, and further, when the display panel is subjected to 3D bonding, the display panel can be smoothly bonded to the curved surface, a better 3D bonding effect is achieved, the display panel in the corner area does not wrinkle, the whole display panel achieves a complete frameless full screen effect, and the visual experience of a user is greatly improved.
The display panel and the mobile terminal provided by the embodiment of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. The utility model provides a display panel, its characterized in that, display panel includes the flat display area and is located the display area of buckling of flat display area week side, the display area of buckling includes that a plurality of sides buckle display subregion and a plurality of corner buckle display subregion, arbitrary adjacent two be equipped with one between the side buckle display subregion the corner buckle display subregion, display panel includes:
a plurality of first island-shaped structures located in the corner bending display sub-area, wherein each first island-shaped structure is provided with at least one pixel unit;
a plurality of tensile bridge structures for connecting two adjacent first island-shaped structures;
in the bending display area, any two stretching bridge structures with different distances from the plane display area are arranged, wherein the elastic modulus of one stretching bridge structure close to the plane display area is smaller than that of the other stretching bridge structure far away from the edge of the display panel.
2. The display panel according to claim 1, wherein a plurality of stretching bridge structure groups are arranged in the bending display area in a direction from the flat display area to the bending display area, and each stretching bridge structure group comprises a plurality of stretching bridge structures;
in any two stretching bridge structure groups in the bending display area, the elastic modulus of one stretching bridge structure in the stretching bridge structure group close to the plane display area is smaller than that of the other stretching bridge structure in the stretching bridge structure group far away from the plane display area.
3. The display panel according to claim 2, wherein in any two of the sets of stretching bridge structures in the bending display area, the length of the stretching bridge structure in one of the sets of stretching bridge structures close to the flat display area is smaller than the length of the stretching bridge structure in the other set of stretching bridge structures far from the flat display area.
4. The display panel according to claim 2, wherein each of the corner bending display sub-regions includes a corresponding stress boundary line, the stress boundary line passing through a center of the flat display region and a boundary intersection point of two side bending display sub-regions adjacent to the corner bending display sub-region;
in any one of the tensile bridge structure groups, in any two of the tensile bridge structures located on one side of the stress dividing line, the length of one of the tensile bridge structures close to the side bending subarea is smaller than the length of the other tensile bridge structure far away from the side bending subarea.
5. The display panel according to claim 2, wherein the side bending display sub-region includes a corresponding bending line, the display panel in the side bending display sub-region includes a plurality of second island structures, and two adjacent second island structures are connected by a stretching bridge structure in a direction forming a predetermined included angle with the bending line;
in any two stretching bridge structure groups, the length of one stretching bridge structure in the stretching bridge structure group close to the plane display area is smaller than that of the other stretching bridge structure in the stretching bridge structure group far away from the plane display area.
6. The display panel according to claim 1, wherein in the corner bending display sub-area, any two of the stretching bridge structures with different distances from the flat display area have a smaller diameter close to the flat display area than the other stretching bridge structure far from the flat display area.
7. The display panel of claim 1, wherein an orthographic projection of the first island structures on the display panel within the corner bend display sub-region comprises either a circle or a sector.
8. The display panel according to claim 7, wherein an orthographic area of the first island structures on the display panel is gradually increased in the corner-folded display sub-region closer to the flat display region.
9. The display panel according to claim 7, wherein the closer to the flat display region, the smaller the arrangement density of the plurality of first island-like structures on the display panel.
10. A mobile terminal comprising the display panel according to any one of claims 1 to 9 and a terminal body, wherein the terminal body is integrated with the display panel.
CN202111293343.8A 2021-11-03 2021-11-03 Display panel and mobile terminal Active CN114078384B (en)

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