Display device and display panel thereof

Abstract

The present invention provides a display device and a display panel thereof, wherein the display panel comprises a display area and a stretchable area located at at least one corner area of ​​the display area, wherein the stretchable area is provided with a plurality of first openings, and the first openings are staggered with each other. According to an embodiment of the present invention, by providing a plurality of first openings in the stretchable area, the organic film layer and the inorganic film layer in a part of the area are removed to form a stress release space, thereby solving the problem of wavy wrinkles.

Description

Technical Field

[0001] The present invention relates to the technical field of display equipment, and in particular to a display device and a display panel thereof. Background Art

[0002] Compared with the widely used liquid crystal and plasma displays, organic light-emitting diode (OLED) devices have attracted much attention due to their advantages such as self-luminescence, rich colors, fast response speed, wide viewing angle, light weight, thin thickness, low power consumption, and flexible display. Now, flexible OLED products are widely used in mobile phones, notebooks and other products.

[0003] With the diversification of product applications, customer demand for stretchable OLED products in mobile phone applications has gradually increased. In related technologies, the structural design of the stretchable area of ​​four-sided curved OLED products still has major defects, and there are obvious wavy wrinkles at the corners of the stretchable area. Summary of the invention

[0004] The present invention provides a display device and a display panel thereof to solve the deficiencies in the related art.

[0005] To achieve the above objectives, a first aspect of an embodiment of the present invention provides a display panel, comprising a display area and a stretchable area located in at least one corner area of ​​the display area, wherein the stretchable area is provided with a plurality of first openings, and each of the first openings is staggered with each other.

[0006] Optionally, the cross-section of the first opening in a direction perpendicular to the thickness of the display panel is in the shape of an elongated strip, the edge of the stretchable area away from the display area includes an arc-shaped edge, and the extension direction of the first opening is perpendicular to the arc-shaped edge.

[0007] Optionally, the display panel includes a dam, the first opening has a strip-shaped cross-section perpendicular to the thickness direction of the display panel, and an extension direction of the first opening is perpendicular to an extension direction of the dam.

[0008] Optionally, a cross-section of the first opening in a direction perpendicular to the thickness of the display panel is rectangular, wavy or sawtooth-shaped.

[0009] Optionally, the first opening runs through the entire thickness or a portion of the thickness of the display panel.

[0010] Optionally, the first opening includes a first sub-opening and a second sub-opening in the thickness direction of the display panel, an organic material layer is between the first sub-opening and the second sub-opening, and the symmetry axes of the first sub-opening and the second sub-opening coincide with each other.

[0011] Optionally, the stretchable region includes an organic substrate, and a first gate insulating layer, a second gate insulating layer, an interlayer insulating layer, a first passivation layer and a first planarization layer stacked in sequence on the organic substrate, and the first opening passes through the first gate insulating layer, the second gate insulating layer, the interlayer insulating layer, the first passivation layer and the first planarization layer.

[0012] Optionally, the first planarization layer is provided with a first groove near the first opening, and a second passivation layer is provided on a side of the first planarization layer outside the first groove away from the organic substrate; the second passivation layer includes a first section near the first opening and a second section away from the first opening, and the first section covers the entire side wall of the first planarization layer.

[0013] Optionally, the display panel includes an organic substrate, and the first opening penetrates the entire thickness or a portion of the thickness of the organic substrate.

[0014] Optionally, the display area includes pixel structure areas and wiring areas that are alternately arranged, and a second opening is provided between adjacent pixel structure areas and wiring areas.

[0015] Optionally, the second opening runs through the entire thickness or a portion of the thickness of the display panel.

[0016] Optionally, the second opening includes a third sub-opening and a fourth sub-opening in the thickness direction of the display panel, an organic material layer is between the third sub-opening and the fourth sub-opening, and the symmetry axes of the third sub-opening and the fourth sub-opening coincide with each other.

[0017] Optionally, the display panel includes an organic substrate, and the second opening penetrates the entire thickness or a portion of the thickness of the organic substrate.

[0018] Optionally, the density of the first openings is greater than the density of the second openings.

[0019] A second aspect of the embodiments of the present invention provides a display device, comprising: a display panel as described in any one of the above items.

[0020] The inventors analyzed the wavy wrinkles in the related art and found that the cause is that the stretchable area located in the corner area is provided with multiple organic and inorganic film layers, and there is compressive stress between them. When the compressive stress cannot be released, it accumulates and causes wavy wrinkles.

[0021] Based on the above analysis, in the above embodiments of the present invention, a plurality of first openings are provided in the stretchable area, and the organic film layer and the inorganic film layer in a part of the area are removed to form a stress release space, thereby solving the problem of wavy wrinkles.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0024] Figure 1 is a top view of a display panel according to a first embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A magnified view of the Q region in FIG.

[0026] Figure 3 yes Figure 2 A cross-sectional view of the display area in the thickness direction of the display panel;

[0027] Figure 4 yes Figure 2 A cross-sectional view of the stretchable region in the thickness direction of the display panel;

[0028] Figure 5 yes Figure 4 A schematic diagram of the structure of the display panel during the manufacturing process;

[0029] Figure 6 is a top view of a local area of ​​a display panel according to a second embodiment of the present invention;

[0030] Figure 7 yes Figure 6 A cross-sectional view of the stretchable region in the thickness direction of the display panel;

[0031] Figure 8 is a cross-sectional view of a stretchable area of ​​a display panel along the thickness direction of the display panel according to a third embodiment of the present invention;

[0032] Fig. 9 yes Figure 8 A schematic diagram of the structure of the display panel during the manufacturing process;

[0033] Fig.10 is a cross-sectional view of a stretchable region of a display panel along the thickness direction of the display panel according to a fourth embodiment of the present invention;

[0034] Fig.11 yes Fig.10 A schematic diagram of the structure of the display panel during the manufacturing process;

[0035] Fig.12 is a top view of a partial area of ​​a display panel according to a fifth embodiment of the present invention;

[0036] Fig.13 yes Fig.12 A cross-sectional view of the display area along the thickness direction of the display panel.

[0037] List of reference numerals:

[0038] Display panel 1, 3, 4 stretchable area P

[0039] Edge S Display area M

[0040] First opening H1 Second opening H2

[0041] Pixel structure area M1 Routing area M2

[0042] Organic substrate 10 Buffer layer 11

[0043] Active layer 12 First gate insulating layer GI1

[0044] Gate 13 Second gate insulating layer GI2

[0045] Source 14a Drain 14b

[0046] Interlayer dielectric layer ILD First passivation layer PVX1

[0047] First planarization layer PLN1 Source transfer electrode 15a

[0048] Drain transfer electrode 15b Second planarization layer PLN2

[0049] Pixel definition layer PDL pixel structure 16

[0050] Anode 16a OLED light emitting block 16b

[0051] Cathode 16c First inorganic encapsulation layer 171

[0052] Organic encapsulation layer 172 Second inorganic encapsulation layer 173

[0053] Gate line WL carrier 2

[0054] Dam 20 First sub-opening H11

[0055] Second sub-opening H12 Placeholder material layer 30

[0056] Second passivation layer PVX2 DETAILED DESCRIPTION

[0057] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0058] Figure 1 is a top view of a display panel according to a first embodiment of the present invention; Figure 2 yes Figure 1 Magnified view of the Q region in .

[0059] Reference Figure 1 and Figure 2 As shown, the display panel 1 includes a display area M and a stretchable area P located in at least one corner area of ​​the display area M. A plurality of first openings H1 are arranged in the stretchable area P, and the first openings H1 are staggered with each other. In other words, the first openings H1 do not overlap with each other.

[0060] Reference Figure 1 As shown, the display panel 1 may have four corner regions, each of which has a stretchable area P.

[0061] In this embodiment, refer to Figure 2 As shown, the cross-section of the first opening H1 in the direction perpendicular to the thickness of the display panel 1 is in the shape of a long strip, the edge S of the stretchable area P away from the display area M includes an arc-shaped edge S, and the extension direction of the first opening H1 is perpendicular to the arc-shaped edge S. Specifically, the cross-section of the first opening H1 in the direction perpendicular to the thickness of the display panel 1 is rectangular. In other embodiments, the cross-section of the first opening H1 in the direction perpendicular to the thickness of the display panel 1 may also be wavy or sawtooth. In some embodiments, the corners of the rectangular cross-section may be rounded.

[0062] In other embodiments, the cross-section of the first opening H1 in the direction perpendicular to the thickness of the display panel 1 may also be circular, elliptical, diamond-shaped, etc.

[0063] Reference Figure 2 As shown, in this embodiment, the display area M of the display panel 1 includes pixel structure areas M1 and wiring areas M2 that are alternately arranged.

[0064] Figure 3 yes Figure 2 A cross-sectional view of the display area along the thickness direction of the display panel.

[0065] Reference Figure 3As shown, the pixel structure area M1 is provided with a plurality of pixel structures 16 arranged in an array. Each pixel structure 16 includes: an anode 16a, a cathode 16c, and an OLED light-emitting block 16b disposed between the anode 16a and the cathode 16c. The OLED light-emitting block 16b can be red, green or blue, or red, green, blue or yellow. The pixel structures 16 of the three primary colors of red, green and blue or the four primary colors of red, green, blue and yellow are alternately distributed.

[0066] Reference Figure 3 As shown, in this embodiment, a pixel driving circuit is disposed between the anode 16a and the organic substrate 10, and the pixel driving circuit includes a plurality of transistors, and the anode 16a is electrically connected to the source of a transistor. In other words, the pixel structure 16 is an active matrix OLED (AMOLED).

[0067] Active drive light emitting OLED, also known as active drive light emitting OLED, uses a transistor array to control the light emission of each pixel, and each pixel can emit light continuously. That is, the addressing of each pixel structure 16 is directly controlled by the transistor array.

[0068] The transistor in the pixel driving circuit includes: an active layer 12, a first gate insulating layer GI1, a gate 13, a second gate insulating layer GI2, a source 14a and a drain 14b. The active layer 12 includes a source region, a drain region and a channel region between the source region and the drain region. The first gate insulating layer GI1 and the second gate insulating layer GI2 are both arranged on the entire surface in the display area M. An interlayer dielectric layer ILD is arranged on the entire surface of the second gate insulating layer GI2 away from the organic substrate 10. A source 14a and a drain 14b are arranged on the side of the interlayer dielectric layer ILD away from the organic substrate 10. The source 14a and the drain 14b are connected to the source region and the drain region respectively through corresponding conductive plugs. A first passivation layer PVX1 is arranged on the entire surface of the source 14a, the drain 14b and the interlayer dielectric layer ILD away from the organic substrate 10. A first planarization layer PLN1 is arranged on the entire surface of the first passivation layer PVX1 away from the organic substrate 10. A source transfer electrode 15a and a drain transfer electrode 15b are provided on the side of the first planarization layer PLN1 away from the organic substrate 10. The source transfer electrode 15a and the drain transfer electrode 15b are respectively connected to the source 14a and the drain 14b through corresponding conductive plugs. The source transfer electrode 15a, the drain transfer electrode 15b and the entire surface of the first planarization layer PLN1 away from the organic substrate 10 are provided with a second planarization layer PLN2. A plurality of anodes 16a are provided on the second planarization layer PLN2. The anode 16a is connected to the source transfer electrode 15a through corresponding conductive plugs. A pixel definition layer PDL is provided on the side of the anode 16a and the second planarization layer PLN2 away from the organic substrate 10. The pixel definition layer PDL has an opening that exposes a partial area of ​​the anode 16a.

[0069] The OLED light-emitting block 16b is located in the opening of the pixel definition layer PDL. The cathode 16c is located on a side of the OLED light-emitting block 16b away from the organic substrate 10. The cathodes 16c of the pixel structures 16 can be connected together to form a surface electrode.

[0070] An encapsulation layer is disposed on the cathode surface electrode. In this embodiment, the encapsulation layer includes a first inorganic encapsulation layer 171 , a second inorganic encapsulation layer 173 , and an organic encapsulation layer 172 between the first inorganic encapsulation layer 171 and the second inorganic encapsulation layer 173 .

[0071] In this embodiment, the active layer 12 is close to the organic substrate 10, and the gate 13 is far away from the organic substrate 10, so the transistor is a top-gate structure. In other embodiments, the transistor can also be a bottom-gate structure, and the gate 13 is close to the organic substrate 10 relative to the active layer 12.

[0072] This embodiment does not limit the specific film layer and circuit structure of the pixel driving circuit. In some embodiments, the first passivation layer PVX1 can also be located on the side of the second planarization layer PLN2 away from the organic substrate 10. In some embodiments, the first passivation layer PVX1 may not be included. In some embodiments, the second planarization layer PLN2 or the first planarization layer PLN1 may not be included.

[0073] In other embodiments, the pixel structure 16 may also be a passively driven light emitting OLED. In this case, the pixel structure area M1 has no pixel driving circuit.

[0074] In this embodiment, the material of the organic substrate 10 may be polyimide. A buffer layer 11 may be disposed on the entire surface of the organic substrate 10. The buffer layer 11 may be made of silicon dioxide, silicon nitride, silicon oxynitride, etc., to prevent water vapor from diffusing upward from the organic substrate 10 to each film layer.

[0075] Still refer to Figure 3 As shown, in this embodiment, the routing area M2 may be provided with a gate line WL, a data line (not shown) and a power line (not shown) and other connection lines connecting the transistors of each pixel structure area M1. The gate line WL may be located on the same layer as the gate 13. In other words, the gate line WL arranged in the routing area M2 and the gate 13 of the transistor in the pixel structure area M1 may be manufactured synchronously. The data line and the power line are arranged in parallel and may be located on the same layer as the source 14a and the drain 14b. In other words, the data line and the power line arranged in the routing area M2 and the source 14a and the drain 14b of the transistor in the pixel structure area M1 may be manufactured synchronously.

[0076] Figure 4 yes Figure 2 A cross-sectional view of the stretchable area along the thickness direction of the display panel. Figure 5 yes Figure 4 Schematic diagram of the structure of the display panel during the manufacturing process.

[0077] Reference Figure 4 and Figure 5 As shown, in this embodiment, during the manufacturing process of the display panel 1, the organic substrate 10 is supported on a carrier plate 2 such as a glass substrate.

[0078] Reference Figure 5 As shown, after the pixel driving circuit and the pixel structure 16 are manufactured, a plurality of first openings H1 are formed in the stretchable region P.

[0079] The length of the first opening H1 may be in the range of 250 μm to 400 μm, the width may be in the range of 8 μm to 12 μm, and the distance between the centers of adjacent first openings H1 may be in the range of 300 μm to 500 μm.

[0080] In this embodiment, the numerical range includes the endpoint value and floating values ​​above and below the endpoint value within the range of process and measurement errors.

[0081] The provision of the first opening H1 is equivalent to removing the organic film layer and the inorganic film layer in a partial area, thereby forming a stress release space, thereby solving the problem of wavy wrinkles.

[0082] The first opening H1 penetrates the organic substrate 10 , and the buffer layer 11 , the first gate insulating layer GI1 , the second gate insulating layer GI2 , the interlayer insulating layer ILD, the first passivation layer PVX1 , and the first planarization layer PLN1 sequentially stacked on the organic substrate 10 .

[0083] When manufacturing the encapsulation layer, the first opening H1 can separate the first inorganic encapsulation layer 171 from the second inorganic encapsulation layer 173 due to its large depth and width. That is, in this embodiment, the first opening H1 runs through the entire thickness of the display panel 1 .

[0084] The organic encapsulation layer 172 may be controlled by the area of ​​the printing process and is not disposed in the stretchable region P.

[0085] In addition, the first planarization layer PLN1 is provided with a first groove near the first opening H1. The first groove can increase the path of water and oxygen entering the pixel structure area M1 from the first opening H1. A second passivation layer PVX2 is provided on the first planarization layer PLN1 outside the first groove. The second passivation layer PVX2 includes a first section near the first opening H1 and a second section away from the first opening H1. The first section covers the entire side wall of the first planarization layer PLN1 to further prevent water and oxygen from entering the first planarization layer PLN1 from the first opening H1. The first inorganic encapsulation layer 171 is in direct contact with the second passivation layer PVX2. The second section covers a portion of the surface of PLN1.

[0086] When the encapsulation layer is completed, refer to Figure 4 As shown, the carrier plate 2 is peeled off.

[0087] Figure 6 FIG. 4 is a top view of a local area of ​​a display panel according to a second embodiment of the present invention. Figure 7 yes Figure 6 A cross-sectional view of the stretchable area along the thickness direction of the display panel.

[0088] Reference Figure 6 and Figure 7 As shown, the display panel 3 of this embodiment is Figures 1 to 5 The display panel 1 in the embodiment is substantially the same, with the only difference being that the display panel 3 includes a dam 20 , the first opening H1 is in a strip-shaped cross-section in a direction perpendicular to the thickness of the display panel 3 , and the extension direction of the first opening H1 is perpendicular to the extension direction of the dam 20 .

[0089] Reference Figure 7 and Figure 4 As shown, at the dam 20 of the display panel 3, the second planarization layer PLN2 and the pixel definition layer PDL are sequentially arranged on the side of the first planarization layer PLN1 away from the organic substrate 10 to increase the height of the dam 20. The dam 20 may include at least one, and any one of the at least one may be composed of at least one of the first planarization layer PLN1, the second planarization layer PLN2 and the pixel definition layer PDL. In some embodiments, a support layer arranged on one side of the pixel definition layer PDL may also be included, and the support layer may also constitute the dam 20.

[0090] In this embodiment, the first groove is arranged in the second planarization layer PLN2 near the first opening H1. The second passivation layer PVX2 is arranged on the second planarization layer PLN2 outside the first groove. The first section of the second passivation layer PVX2 covers the entire sidewalls of the second planarization layer PLN2 and the first planarization layer PLN1. The first inorganic encapsulation layer 171 is in direct contact with the pixel definition layer PDL and the second passivation layer PVX2 respectively.

[0091] Figure 8 is a cross-sectional view of a stretchable region of a display panel along the thickness direction of the display panel according to a third embodiment of the present invention. Fig. 9 yes Figure 8 Schematic diagram of the structure of the display panel during the manufacturing process.

[0092] Reference Figure 8 and Fig. 9 As shown, the display panel of this embodiment is Figures 1 to 7 The display panels 1 and 3 are substantially the same, except that the first opening H1 penetrates a portion of the thickness of the organic substrate 10. Fig. 9As shown, when making the encapsulation layer, the organic substrate 10 at the bottom of the first opening H1 can isolate the first inorganic encapsulation layer 171 from the carrier 2; when peeling off the carrier 2, it can avoid the first inorganic encapsulation layer 171 and the carrier 2 The bonding force is too large, causing the display panel to be incomplete and some organic film layers or inorganic film layers to break.

[0093] In other embodiments, the organic substrate 10 at the bottom of the first opening H1 may retain its entire thickness, or one or more film structures on the organic substrate 10 may remain.

[0094] Fig.10 is a cross-sectional view of a stretchable region of a display panel along the thickness direction of the display panel according to a fourth embodiment of the present invention.

[0095] Reference Fig.10 As shown, the display panel of this embodiment is Figures 8 to 9 The display panels in the embodiment are substantially the same, with the only difference being that the first opening H1 includes a first sub-opening H11 and a second sub-opening H12 in the thickness direction of the display panel, an organic material layer is located between the first sub-opening H11 and the second sub-opening H12, and the symmetry axes of the first sub-opening H11 and the second sub-opening H12 coincide with each other. The symmetry axes of the first sub-opening H11 and the second sub-opening H12 are along the thickness direction of the display panel. The advantage is that when the display panel is bonded to other modules, such as the cover glass, the first sub-opening H11 and the second sub-opening H12 form buffer spaces above and below the organic material layer, respectively, to improve the deformation capacity, and prevent excessive stress accumulation from causing the organic or inorganic film layer of the display panel to break.

[0096] In this embodiment, the width of the first sub-opening H11 is smaller than the width of the second sub-opening H12. In other embodiments, the width of the first sub-opening H11 may be greater than or equal to the width of the second sub-opening H12. In some embodiments, the first sub-opening H11 and the second sub-opening H12 may partially overlap.

[0097] In this embodiment, the organic material layer is a portion of the thickness of the organic substrate. In other embodiments, the organic material layer may also be other organic film layers.

[0098] Fig.11 yes Fig.10 The schematic diagram of the structure of the display panel during the production process. Fig.11 As shown, during the manufacturing process of the display panel, a placeholder material layer 30 can be first formed on the carrier 2. The material of the placeholder material layer 30 can be silicon nitride, silicon dioxide, metal, etc. After the carrier 2 is peeled off, the placeholder material layer 30 is attached to the carrier 2.

[0099] Fig.12 FIG. 4 is a top view of a local area of ​​a display panel according to a fifth embodiment of the present invention. Fig.13 yes Fig.12 A cross-sectional view of the display area along the thickness direction of the display panel.

[0100] Reference Fig.12 and Fig.13 As shown, the display panel 4 of this embodiment is Figures 1 to 11 The display surface in is substantially the same, the only difference being that a second opening H2 is provided between the adjacent pixel structure area M1 and the wiring area M2.

[0101] The density of the second openings H2 may be less than the density of the first openings H1. The density of the first openings H1 refers to the area of ​​all the first openings H1 per unit area. The density of the second openings H2 refers to the area of ​​all the second openings H2 per unit area.

[0102] The second opening H2 can improve the deformation ability of the display panel when it is attached to other modules, such as the cover glass, and prevent the inorganic film layer or the organic film layer from tearing. The second opening H2 can be made in the same process as the first opening H1.

[0103] like Figure 4 and Figure 8 In the embodiment, the second opening H2 may penetrate the entire thickness or a portion of the thickness of the organic substrate 10 , or the entire thickness or a portion of the thickness of the display panel 4 .

[0104] like Fig.10 In the embodiment, the second opening H2 may include a third sub-opening and a fourth sub-opening in the thickness direction of the display panel 4, an organic material layer is between the third sub-opening and the fourth sub-opening, and the symmetry axis of the third sub-opening and the fourth sub-opening coincides. The symmetry axis of the third sub-opening and the fourth sub-opening is along the thickness direction of the display panel 4.

[0105] In this embodiment, the second planarization layer PLN2 is provided with a second groove near the second opening H2. The second groove can disconnect the cathode surface electrode to be subsequently evaporated, thereby increasing the path for water and oxygen to enter the pixel structure area M1 and the wiring area M2 from the second opening H2. A second passivation layer PVX2 is provided on the second planarization layer PLN2 outside the second groove. The second passivation layer PVX2 includes a first section near the second opening H2 and a second section away from the second opening H2. The first section covers the entire side wall of the second planarization layer PLN2 and the first planarization layer PLN1 to further prevent water and oxygen from entering the first planarization layer PLN1 and the second planarization layer PLN2 from the second opening H2. The first inorganic encapsulation layer 171 is in direct contact with the cathode surface electrode.

[0106] Based on the above display panel, an embodiment of the present invention further provides a display device including any of the above display panels. The display device can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, notebook computer, digital photo frame, navigator, etc.

[0107] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0108] In the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The term "several" refers to one, two or more than two, unless otherwise clearly defined.

[0109] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0110] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A display panel, characterized in that: It comprises a display area and a stretchable area located in at least one corner area of ​​the display area, wherein the stretchable area is provided with a plurality of first openings, and each of the first openings is staggered with respect to each other; The cross-section of the first opening in the direction perpendicular to the thickness of the display panel is in the shape of an elongated strip, the edge of the stretchable area away from the display area includes an arc-shaped edge, and the extension direction of the first opening is perpendicular to the arc-shaped edge; the display area includes alternately arranged pixel structure areas and wiring areas, the pixel structure area and the wiring area form a boundary as a whole, and the first opening is located between the boundary and the arc-shaped edge.

2. The display panel according to claim 1, characterized in that: The display panel includes a dam, the first opening is in a strip-shaped cross-section perpendicular to the thickness direction of the display panel, and an extension direction of the first opening is perpendicular to an extension direction of the dam.

3. The display panel according to claim 1 or 2, characterized in that: The cross section of the first opening in a direction perpendicular to the thickness of the display panel is rectangular, wavy or sawtooth.

4. The display panel according to claim 1, characterized in that: The first opening penetrates the entire thickness or a portion of the thickness of the display panel.

5. The display panel according to claim 4, characterized in that: The first opening includes a first sub-opening and a second sub-opening in the thickness direction of the display panel, an organic material layer is between the first sub-opening and the second sub-opening, and the symmetry axes of the first sub-opening and the second sub-opening coincide with each other.

6. The display panel according to claim 4, characterized in that: The stretchable region includes an organic substrate, and a first gate insulating layer, a second gate insulating layer, an interlayer insulating layer, a first passivation layer and a first planarization layer stacked in sequence on the organic substrate, and the first opening penetrates the first gate insulating layer, the second gate insulating layer, the interlayer insulating layer, the first passivation layer and the first planarization layer.

7. The display panel according to claim 6, characterized in that: The first planarization layer is provided with a first groove near the first opening, and a second passivation layer is provided on a side of the first planarization layer outside the first groove away from the organic substrate; the second passivation layer includes a first section near the first opening and a second section away from the first opening, and the first section covers the entire side wall of the first planarization layer.

8. The display panel according to claim 4, characterized in that: The display panel includes an organic substrate, and the first opening penetrates the entire thickness or a portion of the thickness of the organic substrate.

9. The display panel according to claim 1, characterized in that: The display area includes pixel structure areas and wiring areas that are alternately arranged, and a second opening is provided between adjacent pixel structure areas and wiring areas.

10. The display panel according to claim 9, characterized in that: The second opening penetrates the entire thickness or a portion of the thickness of the display panel.

11. The display panel according to claim 10, characterized in that: The second opening includes a third sub-opening and a fourth sub-opening in the thickness direction of the display panel, an organic material layer is between the third sub-opening and the fourth sub-opening, and the symmetry axes of the third sub-opening and the fourth sub-opening coincide with each other.

12. The display panel according to claim 10, characterized in that: The display panel includes an organic substrate, and the second opening penetrates the entire thickness or a portion of the thickness of the organic substrate.

13. The display panel according to claim 9, characterized in that: The density of the first openings is greater than the density of the second openings.

14. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 13.

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