CN115359723B

CN115359723B - Display panel and display device

Info

Publication number: CN115359723B
Application number: CN202211048528.7A
Authority: CN
Inventors: 傅景杰
Original assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-12-29
Anticipated expiration: 2042-08-30
Also published as: CN115359723A

Abstract

The display panel comprises a first display area and a second display area which can be bent along a folding axis, and the display panel comprises a bottom film, and a display substrate, a first optical adhesive layer, a polaroid and a second optical adhesive layer which are sequentially arranged on the bottom film; the bottom film to the second optical adhesive layer are respectively provided with a first through hole to a fifth through hole, and are communicated to form an opening; on a section perpendicular to the bottom film and perpendicular to the folding axis, the opening comprises a first side edge far away from the folding axis and a second side edge close to the folding axis, and the second side edge comprises a first subsection to a fifth subsection which are respectively positioned in different through holes; at least one of the second subsection to the fifth subsection is positioned on one side of the first subsection away from the folding shaft. According to the scheme provided by the embodiment, at least one subsection from the second subsection to the fifth subsection is arranged on one side, close to the folding shaft, of the first subsection, so that at least a film layer does not shade or reduces to shade the first through hole when the folding is carried out, and the visual field of the first through hole is prevented from being influenced.

Description

Display panel and display device

Technical Field

Embodiments of the present disclosure relate to, but are not limited to, display technology, and more particularly, to a display panel and a display device.

Background

Along with the acceleration of upgrading and upgrading of electronic devices, requirements on high integration and high performance of electronic devices such as mobile phones and watches, which use an Organic Light-Emitting Diode (OLED) screen as a display component, are increasingly higher, and requirements on volume and size are smaller, so that development of comprehensive screens is also a trend of display screens such as mobile phones and watches. Punching in the Active Area (AA) is one way to achieve an increase in screen duty cycle. In recent years, products using folding display screens have been increasingly used. When the folding display screen is bent and used, an effective display area Hole (AA Hole) has a light scattering phenomenon, and the imaging effect is affected.

Disclosure of Invention

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the disclosure provides a display panel and a display device, which can improve imaging effect.

The embodiment of the disclosure provides a display panel, which comprises a first display area and a second display area, wherein the first display area and the second display area can be bent along a folding axis positioned between the first display area and the second display area, and the display panel comprises a bottom film, a display substrate, a first optical adhesive layer, a polaroid and a second optical adhesive layer which are sequentially arranged on the bottom film; the base film is provided with a first through hole, the display substrate is provided with a second through hole, the first optical adhesive layer is provided with a third through hole, the polaroid is provided with a fourth through hole, the second optical adhesive layer is provided with a fifth through hole, and the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole are communicated to form an opening; in a cross section perpendicular to the carrier film and perpendicular to the folding axis, the aperture includes a first side edge distal to the folding axis and a second side edge proximal to the folding axis, the second side edge including a first sub-section at the first through-hole, a second sub-section at the second through-hole, a third sub-section at the third through-hole, a fourth sub-section at the fourth through-hole, a fifth sub-section at the fifth through-hole; at least one of the second sub-section, the third sub-section, the fourth sub-section and the fifth sub-section is positioned on one side of the first sub-section close to the folding shaft.

In an exemplary embodiment, the second sub-section is located on a side of the first sub-section adjacent to the folding axis, the third sub-section is located on a side of the second sub-section adjacent to the folding axis, the fourth sub-section is located on a side of the third sub-section adjacent to the folding axis, and the fifth sub-section is located on a side of the fourth sub-section adjacent to the folding axis.

In an exemplary embodiment, on a plane parallel to the bottom film, the orthographic projection of the first through hole includes a first boundary located on a side of a symmetry axis of the orthographic projection of the first through hole near the folding axis, the orthographic projection of the second through hole includes a second boundary located on a side of the symmetry axis near the folding axis, the orthographic projection of the third through hole includes a third boundary located on a side of the symmetry axis near the folding axis, the orthographic projection of the fourth through hole includes a fourth boundary located on a side of the symmetry axis near the folding axis, the orthographic projection of the fifth through hole includes a fifth boundary located on a side of the symmetry axis near the folding axis, at least one distance D between the second boundary and the fifth boundary along a radial direction of the first through hole is equal to or greater than θ/180×2t, where t is a distance between a surface of a film layer where the through hole to which the target boundary belongs and the bottom film is distant from the bottom film, and θ is equal to or greater than 0, and the θ is equal to or less than 0.

In an exemplary embodiment, the θ is 90 degrees to 135 degrees.

In an exemplary embodiment, the first side includes an eleventh subsection located in the first through hole, a twelfth subsection located in the second through hole, a thirteenth subsection located in the third through hole, a fourteenth subsection located in the fourth through hole, and a fifteenth subsection located in the fifth through hole, the eleventh subsection, the twelfth subsection, the thirteenth subsection, the fourteenth subsection, and the fifteenth subsection being aligned in a direction perpendicular to the carrier film.

In an exemplary embodiment, the display panel further includes a protective film disposed on a side of the second optical adhesive layer away from the base film, the protective film being provided with a sixth through hole, the sixth through hole forming a part of the opening, and the second side further includes a sixth sub-section located at the sixth through hole, the sixth sub-section being located on a side of the fifth sub-section near the folding axis.

In an exemplary embodiment, the display panel further includes a touch layer disposed between the first optical adhesive layer and the polarizer, the touch layer being provided with a seventh through hole, the seventh through hole forming a part of the opening, the second side further including a seventh subsection located at the seventh through hole, the seventh subsection being located at a side of the third subsection near the folding axis; the fourth subsection is positioned on one side of the seventh subsection, which is close to the folding shaft.

In an exemplary embodiment, the display substrate includes an organic light emitting diode display substrate.

An embodiment of the present disclosure provides a display device including the display panel according to any one of the embodiments.

In an exemplary embodiment, the display device further includes a camera, and a front projection of the camera is located inside the front projection of the opening in a plane parallel to the display panel.

The display panel comprises a first display area and a second display area, wherein the first display area and the second display area can be bent along a folding axis positioned between the first display area and the second display area, and the display panel comprises a bottom film, a display substrate, a first optical adhesive layer, a polaroid and a second optical adhesive layer which are sequentially arranged on the bottom film; the base film is provided with a first through hole, the display substrate is provided with a second through hole, the first optical adhesive layer is provided with a third through hole, the polaroid is provided with a fourth through hole, the second optical adhesive layer is provided with a fifth through hole, and the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole are communicated to form an opening; in a cross section perpendicular to the carrier film and perpendicular to the folding axis, the aperture includes a first side edge distal to the folding axis and a second side edge proximal to the folding axis, the second side edge including a first sub-section at the first through-hole, a second sub-section at the second through-hole, a third sub-section at the third through-hole, a fourth sub-section at the fourth through-hole, a fifth sub-section at the fifth through-hole; at least one of the second sub-section, the third sub-section, the fourth sub-section and the fifth sub-section is positioned on one side of the first sub-section close to the folding shaft. According to the scheme provided by the embodiment, at least one of the second subsection 22, the third subsection 23, the fourth subsection 24 and the fifth subsection 25 is arranged on one side of the first subsection 21 close to the folding axis P, so that at least a film layer does not block the first through hole or reduces the blocking of the first through hole during folding, and the influence on the visual field of the first through hole is avoided.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instrumentalities particularly pointed out in the specification and the appended drawings.

Other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description.

Drawings

The accompanying drawings are included to provide a further understanding of the technical aspects of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate the technical aspects of the present disclosure and together with the embodiments of the disclosure, and not constitute a limitation of the technical aspects.

FIG. 1 is a schematic plan view of a display panel according to one embodiment;

FIG. 2 is a schematic cross-sectional view of a display panel according to one embodiment;

FIG. 3 is a schematic diagram of a display panel film layer fault according to one embodiment;

fig. 4 is a schematic cross-sectional view of a display panel according to an embodiment of the disclosure;

fig. 5 is a schematic plan view of a display panel according to an embodiment of the disclosure;

FIG. 6 is a schematic plan view of a via provided in an exemplary embodiment;

FIG. 7 is a schematic cross-sectional view of a display substrate according to another exemplary embodiment;

FIG. 8 is a schematic plan view of the display substrate shown in FIG. 7;

FIG. 9 is a schematic cross-sectional view of a display substrate provided in another exemplary embodiment;

FIG. 10 is a schematic plan view of the display substrate shown in FIG. 9;

FIG. 11 is a schematic diagram of a display device according to an exemplary embodiment;

fig. 12 is a flowchart of a method for manufacturing a display panel according to an exemplary embodiment.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The embodiments of the present disclosure and features in the embodiments may be arbitrarily combined with each other without collision.

The steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, while a logical order is depicted in the flowchart, in some cases, the steps depicted or described may be performed in a different order than presented herein.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.

In the drawings, the size of each constituent element, the thickness of a layer, or a region may be exaggerated for clarity. Accordingly, embodiments of the present disclosure are not necessarily limited to this size, and the shapes and sizes of the various components in the drawings do not reflect actual proportions. Furthermore, the drawings schematically show ideal examples, and the embodiments of the present disclosure are not limited to the shapes or the numerical values shown in the drawings.

The ordinal numbers of "first", "second", "third", etc. in the present disclosure are provided to avoid intermixing of constituent elements, and do not denote any order, quantity, or importance.

In the present disclosure, for convenience, terms such as "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like are used to describe positional relationships of the constituent elements with reference to the drawings, only for convenience in describing the present specification and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the direction in which the respective constituent elements are described. Therefore, the present invention is not limited to the words described in the disclosure, and may be replaced as appropriate.

In this disclosure, the terms "mounted," "connected," and "connected" are to be construed broadly, unless otherwise specifically indicated and defined. For example, it may be a fixed connection, a removable connection, or an integral connection; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intermediate members, or may be in communication with the interior of two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

In the present disclosure, "parallel" refers to a state in which two straight lines form an angle of-10 ° or more and 10 ° or less, and thus, a state in which the angle is-5 ° or more and 5 ° or less is also included. The term "perpendicular" refers to a state in which the angle formed by two straight lines is 80 ° or more and 100 ° or less, and thus includes a state in which the angle is 85 ° or more and 95 ° or less.

In this disclosure, "film" and "layer" may be interchanged. For example, the "conductive layer" may be sometimes replaced with a "conductive film". In the same manner, the "insulating film" may be replaced with the "insulating layer" in some cases.

The term "the front projection of B is within the range of the front projection of a" in this disclosure means that the boundary of the front projection of B falls within the boundary of the front projection of a, or that the boundary of the front projection of a overlaps with the boundary of the front projection of B.

When the folding screen is folded for display, tiny dislocation can occur between the module stacking layers, and the influence from the middle folding position to the left and right is increased. Therefore, the film layer at the edge of the opening (AA HOLE) of the display area may be dislocated, so as to block the view of the camera, thereby causing light scattering phenomenon and affecting the shooting effect. In the embodiment of the disclosure, the module film layer at the AA HOLE edge is corrected in design.

Fig. 1 is a schematic plan view of a display panel according to an embodiment of the disclosure. As shown in fig. 1, the display panel provided in this embodiment includes a first display area 100 and a second display area 200, the display panel may be folded along a folding axis P between the first display area 100 and the second display area 200, and the first display area 100 may include an opening 10. The camera 8 can be arranged at the position corresponding to the opening 10. Only one opening 10 is shown in fig. 1, but the embodiment of the present disclosure is not limited thereto, and a plurality of openings 10 may be provided. For example, in an exemplary embodiment, the opening 10 may be provided in both the first display area 100 and the second display area 200. The shape of the opening 10 shown in fig. 1 is circular, but the embodiment of the present disclosure is not limited thereto and may be square, oval, or the like.

In an exemplary embodiment, the display panel may include, but is not limited to, an OLED display panel, a Quantum dot light emitting diode display panel (QLED), and the like.

Fig. 2 is a schematic cross-sectional view of the display panel shown in fig. 1 along AA'. As shown in fig. 2, the display panel may include, in a direction perpendicular to the display panel and to the folding axis P: a bottom film 11, a display substrate 12 disposed on the bottom film 11, a first optical adhesive layer 13 disposed on a side of the display substrate 12 away from the bottom film 11, a polarizer 14 disposed on a side of the first optical adhesive layer 13 away from the bottom film 11, a second optical adhesive layer 15 disposed on a side of the polarizer 14 away from the bottom film 11, a cover plate 20 disposed on a side of the second optical adhesive layer 15 away from the bottom film 11, and a camera 8 disposed on a side of the bottom film 11 away from the display substrate 12. The opening 10 penetrates through the base film 11, the display substrate 12, the first optical adhesive layer 13, the polarizer 14 and the second optical adhesive layer 15. In this embodiment, the edges of the film layers may be aligned in the opening 10.

Fig. 3 is a schematic cross-sectional view along AA' direction of the display panel shown in fig. 2 after being folded. As shown in fig. 3, after the display panel is folded, the film layer (including the display substrate 12, the first optical adhesive layer 13, the polarizer 14, and the second optical adhesive layer 15) is dislocated in a direction X away from the folding axis P, so that the view of the camera 8 is blocked, resulting in poor imaging effect. It can be seen that the more distant the base film 11 is, the greater the dislocation of the film layers is.

Fig. 4 is a schematic cross-sectional view of the display panel shown in fig. 5 along AA'. Fig. 5 is a schematic plan view of a display panel according to an exemplary embodiment. Fig. 6 is a schematic plan view of the plurality of vias shown in fig. 5 after tiling. As shown in fig. 4, 5 and 6, the display panel may include a first display area 100 and a second display area 200, the first display area 100 and the second display area 200 may be bent along a folding axis P, and the first display area 100 may include an opening 10. Along a direction perpendicular to a display surface of the display panel, the display panel provided in this embodiment may include: a base film 11, a display substrate 12 arranged on the base film 11, a first optical adhesive layer 13 arranged on one side of the display substrate 12 away from the base film 11, a polarizer 14 arranged on one side of the first optical adhesive layer 13 away from the base film 11, a second optical adhesive layer 15 arranged on one side of the polarizer 14 away from the base film 11, and a cover plate 20 arranged on one side of the second optical adhesive layer 15 away from the base film 11. The base film 11 is provided with a first through hole 101, the display substrate 12 is provided with a second through hole 102, the first optical adhesive layer 13 is provided with a third through hole 103, the polarizer 14 is provided with a fourth through hole 104, the second optical adhesive layer is provided with a fifth through hole 105, and the first through hole 101, the second through hole 102, the third through hole 103, the fourth through hole 1054 and the fifth through hole 105 are communicated to form a through hole 10. In a section perpendicular to the carrier film 11 and perpendicular to the folding axis P, the opening 10 may comprise a first side edge remote from the folding axis P and a second side edge close to the folding axis P, the second side edge comprising a first subsection 21 located in the first through hole 101, a second subsection 22 located in the second through hole 102, a third subsection 23 located in the third through hole 103, a fourth subsection 24 located in the fourth through hole, a fifth subsection 25 located in the fifth through hole; at least one of the second sub-section 22, the third sub-section 23, the fourth sub-section 24 and the fifth sub-section 25 is located on the side of the first sub-section 21 close to the folding axis P.

The folding axis P may be a physical folding axis or, alternatively, no physical folding axis, only represents folding of the first display area 100 and the second display area 200 in the direction indicated by the folding axis P.

According to the scheme provided by the embodiment, at least one of the second subsection 22, the third subsection 23, the fourth subsection 24 and the fifth subsection 25 is arranged on one side of the first subsection 21 close to the folding axis P, so that at least a film layer does not block the first through hole or reduces the blocking of the first through hole during folding, and the influence on the visual field of the first through hole is avoided.

In an exemplary embodiment, the second sub-section 22, the third sub-section 23, the fourth sub-section 24, and the fifth sub-section 25 are all located on the side of the first sub-section 21 near the folding axis P, so that the film layer on the bottom film 11 does not block the first through hole or reduces to block the first through hole when folding, and light entering the first through hole is prevented from being blocked. However, the embodiment of the present disclosure is not limited thereto, only a sub-section of a film layer having a larger partial dislocation may be disposed on a side of the first sub-section 21 close to the folding axis P, for example, only a fourth sub-section 24, a fifth sub-section 25 may be disposed on a side of the first sub-section 21 close to the folding axis P, and so on.

In an exemplary embodiment, the second sub-section 22 may be located at a side of the first sub-section 21 adjacent to the folding axis P, the third sub-section 23 may be located at a side of the second sub-section 22 adjacent to the folding axis P, the fourth sub-section 24 may be located at a side of the third sub-section 23 adjacent to the folding axis P, and the fifth sub-section 25 may be located at a side of the fourth sub-section 24 adjacent to the folding axis P. According to the scheme provided by the embodiment, as the film layer far away from the bottom film is larger in dislocation during folding, the distance between the subsection of the through hole of the film layer far away from the bottom film and the first subsection is further, so that the larger dislocation of the film layer far away can be counteracted during folding, and the shielding of the view of the first through hole is reduced. However, the embodiments of the present disclosure are not limited thereto, and only a partial segment may be provided to satisfy the above-described requirements. For example, the fourth sub-section 24 is located on the side of the third sub-section 23 near the folding axis P, the fifth sub-section 25 is located on the side of the fourth sub-section 24 near the folding axis P, and the second sub-section 22 and the third sub-section 23 may be aligned in a direction perpendicular to the base film 11. I.e. the second 22 and third 23 sub-sections are at the same distance from the first sub-section 21 in a direction parallel to the carrier film 11.

In an exemplary embodiment, on a plane parallel to the bottom film 11, the front projection of the first through hole 101 includes a first boundary 31 located on a side of a symmetry axis Q of the front projection of the first through hole 101 close to the folding axis P, the front projection of the second through hole 102 includes a second boundary 32 located on a side of the symmetry axis Q close to the folding axis P, the front projection of the third through hole 103 includes a third boundary 33 located on a side of the symmetry axis Q close to the folding axis P, the front projection of the fourth through hole 104 includes a fourth boundary 34 located on a side of the symmetry axis Q close to the folding axis P, the front projection of the fifth through hole 105 includes a fifth boundary 35 located on a side of the symmetry axis Q close to the folding axis P, at least one of the second boundary 32 to the fifth boundary 35 has a distance D equal to or greater than θ/180×2ρ from the first boundary 31 along a radial direction of the first through hole 101, the boundary is a preset distance θ from the bottom film 11, and θ is equal to or less than the preset angle θ, and θ is equal to the preset angle θ between the bottom film 11 and the bottom film. In the embodiment of the disclosure, when the folding angle of the first display area 100 and the second display area 200 is θ, the dislocation distance between the target film layer and the base film is θ/180×2pi×t, and therefore, when the folding angle is less than or equal to θ, the dislocation distance does not exceed θ/180×2pi×t, and therefore, the field of view is not affected. For example, when θ is 180 degrees or less, the dislocation distance does not exceed θ/180×2pi×t when the folding angle is 180 degrees or less, and thus the visual field is not affected, and when θ is 180 degrees or less, the display panel can be used arbitrarily within the folding angle range supported by the display panel, and the visual field is not blocked. The folding angle is 180 degrees, namely an included angle is formed between the display surface where the first display area is located and the display surface where the second display area is located. For example, when the first display area and the second display area are not folded, an included angle formed between the display surface where the first display area is located and the display surface where the second display area is located is 180 degrees, the folding angle is 0, and when the first display area and the second display area are completely folded (the first display area is folded to be right above the second display area), an included angle formed between the display surface where the first display area is located and the display surface where the second display area is located is 0 degrees, and the folding angle is 180 degrees.

In an exemplary embodiment, a distance d1=θ/180×2pi×t1 between the second boundary 32 and the first boundary 31 along the radial direction of the first through hole 101, where t1 is a distance between the surface of the display substrate 12, where the second through hole 102 to which the second boundary 32 belongs, and the base film 11, that is, a thickness of the display substrate 12 along a direction perpendicular to the base film 11, is far from the surface of the base film 11.

In an exemplary embodiment, a distance d2=θ/180×2pi×t2 between the third boundary 33 and the first boundary 31 along the radial direction of the first through hole 101, where t2 is a distance between the surface of the first optical adhesive layer 13, where the third through hole 103 where the third boundary 33 belongs, and the base film 11, that is, a sum of a thickness of the display substrate 12 along a direction perpendicular to the base film 11 and a thickness of the first optical adhesive layer 13 along a direction perpendicular to the base film 11.

In an exemplary embodiment, the distance d3=θ/180×2pi×t3 between the fourth boundary 34 and the first boundary 31 along the radial direction of the first through hole 101, where t3 is the distance between the surface of the polarizer 14, where the fourth through hole 104 belongs to the fourth boundary 34, and the base film 11, that is, the sum of the thickness of the display substrate 12 along the direction perpendicular to the base film 11, the thickness of the first optical adhesive layer 13 along the direction perpendicular to the base film 11, and the thickness of the polarizer 14 along the direction perpendicular to the base film 11.

In an exemplary embodiment, the distance d4=θ/180×2pi×t4 between the fifth boundary 35 and the first boundary 31 along the radial direction of the first through hole 101, where t4 is the sum of the distance between the surface of the second optical adhesive layer 15, where the fifth through hole 105 to which the fifth boundary 35 belongs, and the bottom film 11, that is, the surface of the display substrate 12 along the direction perpendicular to the bottom film 11, the thickness of the first optical adhesive layer 13 along the direction perpendicular to the bottom film 11, the thickness of the polarizer 14 along the direction perpendicular to the bottom film 11, and the thickness of the second optical adhesive layer 15 along the direction perpendicular to the bottom film 11.

In an exemplary embodiment, the θ may be 90 degrees to 135 degrees. For example, when θ is 90 degrees, the user uses the display panel, and when the folding angle is 90 degrees or less, the field of view of the first through hole is not affected. When θ is 135 degrees, the user uses the display panel, and when the folding angle is less than or equal to 135 degrees, the view of the first through hole is not affected. The folding angle of 90 degrees to 135 degrees can meet the user requirements, so that the dislocation distance D in the range can be set, and overlarge dislocation between film layers is avoided, so that the display uniformity is improved.

In an exemplary embodiment, the first side may include an eleventh sub-section 51 located at the first through hole 101, a twelfth sub-section 52 located at the second through hole 102, a thirteenth sub-section 53 located at the third through hole 103, a fourteenth sub-section 54 located at the fourth through hole 104, a fifteenth sub-section 55 located at the fifth through hole 105, and the eleventh sub-section 51, the twelfth sub-section 52, the thirteenth sub-section 53, the fourteenth sub-section 54, and the fifteenth sub-section 55 are aligned in a direction perpendicular to the base film 11. That is, the front projections of the eleventh sub-segment 51, the twelfth sub-segment 52, the thirteenth sub-segment 53, the fourteenth sub-segment 54, and the fifteenth sub-segment 55 on the base film 11 may overlap. According to the scheme provided by the embodiment, when the folding device is folded, the film layer moves in the direction away from the folding shaft, so that the first side edge which is located away from the folding shaft does not block the view of the first through hole after moving, and the first side edge can be aligned. However, the embodiment of the disclosure is not limited thereto, and the first side may not be aligned, so long as it is ensured that the film layer on the bottom film does not block the view of the first through hole after the display panel is folded.

Fig. 5 is a schematic view of a display panel according to an exemplary embodiment, and fig. 6 is a schematic view of tiling a plurality of through holes in the display panel shown in fig. 5. As shown in fig. 5 and 6, on a plane parallel to the base film 11, the front projection of the first through hole 101 includes an eleventh boundary 41 located on a side of the symmetry axis Q away from the folding axis P, the front projection of the second through hole 102 includes a twelfth boundary 42 located on a side of the symmetry axis Q away from the folding axis P, the front projection of the third through hole 103 includes a thirteenth boundary 43 located on a side of the symmetry axis Q away from the folding axis P, the front projection of the fourth through hole 104 includes a fourteenth boundary 44 located on a side of the symmetry axis Q away from the folding axis P, the front projection of the fifth through hole 105 includes a fifteenth boundary 45 located on a side of the symmetry axis Q away from the folding axis P, and the eleventh boundary 41, the twelfth boundary 42, the thirteenth boundary 43, and the fourteenth boundary 44 fall into the fifteenth boundary 45, that is, are part of the fifteenth boundary 45. However, embodiments of the present disclosure are not limited thereto, the twelfth boundary 42 may be aligned with the second boundary 32 along the axis of symmetry Q, the thirteenth boundary 43 may be aligned with the third boundary 33 along the axis of symmetry Q, the fourteenth boundary 44 may be aligned with the fourth boundary 34 along the axis of symmetry Q, and the fifteenth boundary 45 may be aligned with the fifth boundary 35 along the axis of symmetry Q. The planar shape of the through hole shown in fig. 5 and 6 is only an example, and the embodiment of the present disclosure is not limited thereto, and may be other shapes such as ellipse, square, and the like.

In an exemplary embodiment, the base film 11 is, for example, a heat dissipation film.

Fig. 7 is a schematic cross-sectional view of the display panel shown in fig. 8 along AA'. Fig. 8 is a schematic plan view of a display panel according to another exemplary embodiment. As shown in fig. 7, the display panel provided in this embodiment may include: the display device comprises a base film 11, a display substrate 12, a first optical adhesive layer 13, a polaroid 14 and a second optical adhesive layer 15 which are sequentially arranged; and a protective film 16 disposed on a side of the second optical adhesive layer 15 away from the base film 11, where the protective film 16 is provided with a sixth through hole 106, and the sixth through hole 106 forms a part of the opening 10 (that is, the sixth through hole 106 is through with the first through hole 101, the second through hole 102, the third through hole 103, the fourth through hole 104, and the fifth through hole 105), and the second side may further include a sixth subsection 26 located on the sixth through hole 106, and the sixth subsection 26 may be located on a side of the fifth subsection 25 near the folding axis P. In an exemplary embodiment, a cover plate 20 may be disposed on a side of the protective film 16 remote from the base film 11.

In an exemplary embodiment, as shown in fig. 8, on a plane parallel to the base film 11, the orthographic projection of the sixth through hole 106 includes a sixth boundary 36 located on a side of the symmetry axis Q near the folding axis P, a distance D5 between the sixth boundary 36 and the first boundary 31 along a radial direction of the first through hole 101 is equal to or greater than θ/180×2ρ×t5, where t5 is a sum of a thickness of the display substrate 12 along a direction perpendicular to the base film 11, a thickness of the polarizer 14 along a direction perpendicular to the base film 11, a thickness of the second optical adhesive layer 15 along a direction perpendicular to the base film 11, and a thickness of the protective film 16 along a direction perpendicular to the base film 11, where the surface of the protective film 16 away from the base film 11 is located on the sixth through hole 106.

In an exemplary embodiment, as shown in fig. 7, the first side may include a sixteenth sub-segment 56 located at the sixth through hole 106, and the eleventh sub-segment 51, the twelfth sub-segment 52, the thirteenth sub-segment 53, the fourteenth sub-segment 54, the fifteenth sub-segment 55, and the sixteenth sub-segment 56 may be aligned in a direction perpendicular to the base film 11.

Fig. 9 is a schematic cross-sectional view of the display panel shown in fig. 10 along AA'. Fig. 10 is a schematic plan view of a display panel according to another exemplary embodiment. As shown in fig. 9, the display panel provided in this embodiment may include: the bottom film 11, the display substrate 12, the first optical adhesive layer 13 that set gradually, set up the first optical adhesive layer 13 is kept away from the touch-control layer 17 of bottom film 11 one side, set gradually the touch-control layer 17 is kept away from the second optical adhesive layer 15 and the apron 20 of base one side, the touch-control layer 17 is provided with seventh through-hole 107, seventh through-hole 107 constitutes the part of trompil 10 (i.e. seventh through-hole 107 link up with first through-hole 101, second through-hole 102, third through-hole 103, fourth through-hole 104, fifth through-hole 105), the second side still can be including being located seventh subsection 27 of seventh through-hole 107, seventh subsection 27 can be located third subsection 23 is close to folding axis P one side, fourth subsection 24 can be located seventh subsection 27 is close to folding axis P one side. In the present embodiment, the touch layer 17 is provided, and in another exemplary embodiment, the touch layer 17 may be integrated in the display substrate 22.

In an exemplary embodiment, as shown in fig. 10, on a plane parallel to the base film 11, the orthographic projection of the seventh through hole 107 includes a seventh boundary 37 located on a side of the symmetry axis Q near the folding axis P, a distance D6 between the sixth boundary 37 and the first boundary 31 along a radial direction of the first through hole 101 is greater than or equal to θ/180×2pi×t6, where t6 is a sum of a thickness of the display substrate 12 along a direction perpendicular to the base film 11 and a thickness of the first optical adhesive layer 13 along a direction perpendicular to the base film 11, and a thickness of the touch layer 17 along a direction perpendicular to the base film 11, where the touch layer 17 is located away from a surface of the base film 11 of the seventh through hole 107. In this embodiment, the distance D3' between the fourth boundary 34 and the first boundary 31 along the radial direction of the first through hole 101 is greater than or equal to θ/180×2pi×t3', where t3' is the sum of the thickness of the display substrate 12 along the direction perpendicular to the base film 11, the thickness of the first optical adhesive layer 13 along the direction perpendicular to the base film 11, the thickness of the touch layer 17 along the direction perpendicular to the base film 11, and the thickness of the polarizer 14 along the direction perpendicular to the base film 11. The distance D4' between the fifth border 35 and the first border 31 along the radial direction of the first through hole 101 is greater than or equal to θ/180×2pi×t4', where t4' is the sum of the thickness of the display substrate 12 along the direction perpendicular to the base film 11, the thickness of the first optical adhesive layer 13 along the direction perpendicular to the base film 11, the thickness of the touch layer 17 along the direction perpendicular to the base film 11, the thickness of the polarizer 14 along the direction perpendicular to the base film 11, and the thickness of the second optical adhesive layer 15 along the direction perpendicular to the base film 11.

In an exemplary embodiment, as shown in fig. 9, the first side may include a seventeenth sub-section 57 located at the seventh through hole 107, and the eleventh sub-section 51, the twelfth sub-section 52, the thirteenth sub-section 53, the fourteenth sub-section 54, the fifteenth sub-section 55, and the seventeenth sub-section 57 may be aligned in a direction perpendicular to the base film 11.

The embodiment of the disclosure also provides a display device, which comprises the display panel of the embodiment. The display device may be: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

In an exemplary embodiment, as shown in fig. 11, the display device may further include a camera 8, and on a plane parallel to the display panel, an orthographic projection of the camera 8 is located inside an orthographic projection of the opening 10. The camera 8 may be disposed outside the opening 10 or inside the opening 10, or partially inside the opening 10 and partially outside the opening 10, which is not limited in the embodiment of the present application. The position of the camera 8 in fig. 11 is only illustrative and can be placed as desired. The embodiments of the present disclosure are not limited thereto and the aperture 10 may be an aperture corresponding to other sensors.

Fig. 12 is a flowchart of a method for manufacturing a display panel according to an embodiment of the disclosure. As shown in fig. 12, an embodiment of the present disclosure provides a method for manufacturing a display panel, including:

step 1201, providing a display substrate 12;

step 1202, attaching a first optical adhesive layer 13 on the display substrate 12;

step 1203, attaching a polarizer 14 to a side of the first optical adhesive layer 13 away from the display substrate 12;

in step 1204, a via hole is formed at a predetermined position, and the via hole penetrates through the display substrate 12, the first optical adhesive layer 13, and the polarizer 14. The display substrate 12, the first optical adhesive layer 13, and the polarizer 14 are respectively provided with a second through hole, a third through hole, and a fourth through hole.

In step 1205, a second optical adhesive layer 15 is attached to a side of the polarizer 14 away from the display substrate 12, and a fifth through hole is formed in the second optical adhesive layer 15.

In this embodiment, the second optical adhesive layer is perforated before bonding. In another embodiment, a second optical adhesive layer 15 may be used without holes, and holes are formed after attaching the second optical adhesive layer 15 to the polarizer 14. The embodiments of the present application are not limited in this regard.

In an exemplary embodiment, the preparation method further includes: and a cover plate 20 is attached to one side of the second optical adhesive layer 15 away from the display substrate 12.

In an exemplary embodiment, before the second optical adhesive layer 15 is attached to the cover plate 20 on a side away from the display substrate 12, a camera 8 is further installed, and on a plane parallel to the display substrate 12, an orthographic projection of the camera 8 is located inside the orthographic projection of the opening.

In an exemplary embodiment, before providing a display substrate 12, the preparation method further includes: and attaching a bottom film 11 to the side of the display substrate 12 away from the first optical adhesive layer 13.

Although the embodiments of the present invention are described above, the embodiments are only used for facilitating understanding of the present invention, and are not intended to limit the present invention. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is to be determined by the appended claims.

Claims

1. The display panel is characterized by comprising a first display area and a second display area, wherein the first display area and the second display area can be bent along a folding axis positioned between the first display area and the second display area, and the display panel comprises a bottom film, a display substrate, a first optical adhesive layer, a polaroid and a second optical adhesive layer which are sequentially arranged on the bottom film; the base film is provided with a first through hole, the display substrate is provided with a second through hole, the first optical adhesive layer is provided with a third through hole, the polaroid is provided with a fourth through hole, the second optical adhesive layer is provided with a fifth through hole, and the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole are communicated to form an opening; in a cross section perpendicular to the carrier film and perpendicular to the folding axis, the aperture includes a first side edge distal to the folding axis and a second side edge proximal to the folding axis, the second side edge including a first sub-section at the first through-hole, a second sub-section at the second through-hole, a third sub-section at the third through-hole, a fourth sub-section at the fourth through-hole, a fifth sub-section at the fifth through-hole; at least one of the second sub-section, the third sub-section, the fourth sub-section and the fifth sub-section is positioned on one side of the first sub-section close to the folding shaft.

2. The display panel of claim 1, wherein the second sub-segment is located on a side of the first sub-segment that is adjacent to the folding axis, the third sub-segment is located on a side of the second sub-segment that is adjacent to the folding axis, the fourth sub-segment is located on a side of the third sub-segment that is adjacent to the folding axis, and the fifth sub-segment is located on a side of the fourth sub-segment that is adjacent to the folding axis.

3. The display panel according to claim 2, wherein on a plane parallel to the base film, the orthographic projection of the first through hole includes a first boundary located on a side of an axis of symmetry of the orthographic projection of the first through hole close to the folding axis, the orthographic projection of the second through hole includes a second boundary located on a side of the axis of symmetry close to the folding axis, the orthographic projection of the third through hole includes a third boundary located on a side of the axis of symmetry close to the folding axis, the orthographic projection of the fourth through hole includes a fourth boundary located on a side of the axis of symmetry close to the folding axis, the orthographic projection of the fifth through hole includes a fifth boundary located on a side of the axis of symmetry close to the folding axis, a distance D between at least one target boundary and the first boundary along a radial direction of the first through hole is equal to or greater than θ/180 x 2, t is a distance between a surface of a film layer where the through hole to which the target boundary belongs and the base film is located, θ is equal to or greater than 180 ° and equal to or less than 0.

4. A display panel according to claim 3, wherein θ is 90 degrees to 135 degrees.

5. The display panel of claim 1, wherein the first side comprises an eleventh subsection located in the first via, a twelfth subsection located in the second via, a thirteenth subsection located in the third via, a fourteenth subsection located in the fourth via, a fifteenth subsection located in the fifth via, the eleventh subsection, the twelfth subsection, the thirteenth subsection, the fourteenth subsection, the fifteenth subsection being aligned in a direction perpendicular to the carrier film.

6. The display panel according to claim 2, further comprising a protective film provided on a side of the second optical adhesive layer remote from the base film, the protective film being provided with a sixth through hole constituting a part of the opening, the second side further comprising a sixth subsection located at the sixth through hole, the sixth subsection being located on a side of the fifth subsection close to the folding axis.

7. The display panel of claim 2, further comprising a touch layer disposed between the first optical adhesive layer and the polarizer, the touch layer being provided with a seventh through hole, the seventh through hole forming a portion of the aperture, the second side further comprising a seventh subsection located at the seventh through hole, the seventh subsection located at a side of the third subsection proximate the folding axis; the fourth subsection is positioned on one side of the seventh subsection, which is close to the folding shaft.

8. The display panel according to any one of claims 1 to 7, wherein the display substrate comprises an organic light emitting diode display substrate.

9. A display device comprising the display panel according to any one of claims 1 to 8.

10. The display device of claim 9, further comprising a camera, an orthographic projection of the camera being located inside an orthographic projection of the aperture in a plane parallel to the display panel.