Display panel and display device

Abstract

The invention provides a display panel and a display device.The display panel comprises a display area and a non-display area, at least part of the non-display area surrounds the display area, the display panel comprises a first substrate and a second substrate which are oppositely arranged, a display layer, a first light shielding layer and a second light shielding layer are arranged between the first substrate and the second substrate, and the first light shielding layer and the second light shielding layer are located in the non-display area; the second shading layer is located on the side, away from the display layer, of the first shading layer, in the flattened state of the display panel, the first edge, close to the side of the display area, of the first shading layer is closer to the edge of the display area, and the second edge, close to the side of the display area, of the second shading layer is farther from the edge of the display area. The first shading layer and the second shading layer which are arranged in this way can achieve the shading effect, when the display panel is folded, the position of the first shading layer closer to the display layer is basically unchanged, the second shading layer farther from the display layer cannot shield the display area even if the second shading layer slides, the shading layers can be prevented from affecting display of the display panel, and the display effect of the display panel is improved. And the performance of the display panel is improved.

Description

[0001] This application is a divisional application of application number 202210898056.8, application date July 28, 2022, and invention name “A display panel and display device”. Technical Field

[0002] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0003] With the rapid development of terminal devices, higher requirements are put forward for the display of terminal devices. The current display technology field is mainly divided into liquid crystal display (LCD), organic light emitting display (OLED) and micro light emitting diode (Micro-LED) display.

[0004] In order to shield the wiring arranged in the non-display area and prevent light leakage from the display panel, a light shielding layer is usually provided on the cover plate of the display panel. With the development of folding technology, the current display panel can have a folding function, but when the display panel is folded, the light shielding layer will slide, which may cause the light shielding layer to block the display area, affecting the display effect of the display panel. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a display panel and a display device, which can reduce the probability of a shading layer blocking a display area when the display panel is folded, avoid the shading layer affecting the display effect of the display panel, and improve the performance of the display panel.

[0006] An embodiment of the present application provides a display panel, the display panel comprising a display area and a non-display area, at least part of the non-display area surrounds the display area, and includes:

[0007] A first substrate and a second substrate arranged opposite to each other;

[0008] A display layer is provided between the first substrate and the second substrate, the display layer includes a light emitting device, and the light emitting device is located in the display area;

[0009] A first light shielding layer and a second light shielding layer are located in the non-display area, and the second light shielding layer is located on a side of the first light shielding layer away from the display layer;

[0010] When the display panel is flattened, along the direction from the display area to the non-display area, the distance between the first edge of the first shading layer close to the display area and the edge of the display area is D1, and the distance between the second edge of the second shading layer close to the display area and the edge of the display area is D2, and D1<D2.

[0011] An embodiment of the present application provides a display device, comprising a display panel as described in any one of the above embodiments.

[0012] The embodiment of the present application provides a display panel, which includes a display area and a non-display area, wherein at least a portion of the non-display area surrounds the display area, including: a first substrate and a second substrate arranged opposite to each other, a display layer provided between the first substrate and the second substrate, the display layer including a light-emitting device, the light-emitting device being located in the display area, a first light-shielding layer and a second light-shielding layer being located in the non-display area, the second light-shielding layer being located on a side of the first light-shielding layer away from the display layer, and in a flattened state of the display panel, along a direction from the display area to the non-display area, a distance D1 between a first edge of the first light-shielding layer on a side close to the display area and an edge of the display area, a distance D2 between a second edge of the second light-shielding layer on a side close to the display area and an edge of the display area, D1<D2, that is, in a plane perpendicular to the plane where the first substrate is located In the direction, the second light-shielding layer is farther away from the display layer, and the first light-shielding layer is closer to the display layer. The first light-shielding layer closer to the display layer has a smaller sliding distance when folded, and the second light-shielding layer farther away from the display layer has a larger sliding distance. When the display panel is flattened, a first edge of the first light-shielding layer close to the display area side is closer to the edge of the display area, and a second edge of the second light-shielding layer close to the display area side is farther from the edge of the display area. The first light-shielding layer and the second light-shielding layer arranged in this way can not only have a shielding effect, but also when the display panel is folded, the position of the first light-shielding layer closer to the display layer remains basically unchanged, and the second light-shielding layer farther away from the display layer will not block the display area even if it slides, thereby avoiding the light-shielding layer affecting the display effect of the display panel and improving the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 is a schematic diagram of a cross-sectional structure of a display panel;

[0015] Figure 2 A schematic diagram of a top view structure of a display panel provided in an embodiment of the present application;

[0016] Figure 3 is along Figure 2 A schematic diagram of the cross-sectional structure of the display panel taken along the direction BB';

[0017] Figure 4 A schematic diagram of a folded state of a display panel provided in an embodiment of the present application;

[0018] Figure 5 for Figure 4 A schematic diagram of a partial cross-sectional structure of a display panel is provided;

[0019] Figure 6 for Figure 4 Another partial cross-sectional structural schematic diagram of a display panel is provided;

[0020] Figure 7 is along Figure 2 Another schematic diagram of the cross-sectional structure of the display panel taken along the direction BB';

[0021] Figure 8 is along Figure 2 A schematic diagram of another cross-sectional structure of the display panel taken along the direction BB';

[0022] Fig. 9 is along Figure 2 A schematic diagram of another cross-sectional structure of the display panel taken along the direction BB';

[0023] Fig.10 is along Figure 2 A schematic diagram of another cross-sectional structure of the display panel taken along the direction BB';

[0024] Fig.11 for Figure 4 A schematic diagram of another partial cross-sectional structure of a display panel is provided;

[0025] Fig.12 for Figure 4 A schematic diagram of another partial cross-sectional structure of a display panel is provided;

[0026] Fig.13 A top view of a display panel in a folded state provided by an embodiment of the present application;

[0027] Fig.14 A schematic diagram of a top view structure of another display panel provided in an embodiment of the present application;

[0028] Fig.15 is along Fig.14 A schematic diagram of a cross-sectional structure of a display panel taken along the direction of BB';

[0029] Fig.16 is along Fig.14 Another schematic diagram of the cross-sectional structure of the display panel taken along the direction BB';

[0030] Fig.17 A schematic diagram of a planar structure of a display device provided in an embodiment of the present application;

[0031] Fig.18 A schematic diagram of the planar structure of another display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0034] This application is described in detail with reference to schematic diagrams. When describing the embodiments of this application in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of this application. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0035] With the rapid development of terminal devices, higher requirements are put forward for the display of terminal devices. The current display technology field is mainly divided into liquid crystal display (LCD), organic light emitting display (OLED) and micro light emitting diode (Micro-LED) display.

[0036] refer to Figure 1 The figure shows a schematic diagram of a cross-sectional structure of a display panel. The current display panel includes a substrate 10, a display layer 20 and a cover plate 30, and the display panel includes a display area AA and a non-display area NA. In order to shield the wiring arranged in the non-display area NA and prevent the display panel from leaking light, a light shielding layer 40 is usually provided on the cover plate 30 of the display panel, and the distance between the edge of the light shielding layer 40 close to the display area AA and the edge of the display area AA is usually 200 microns. With the development of folding technology, the current display panel can have a folding function, but when the display panel is folded, the light shielding layer 40 will slide relative to the display layer 20, which may cause the distance between the edge of the light shielding layer 40 close to the display area AA and the edge of the display area AA to increase, and the light shielding layer 40 cannot completely shield the wiring arranged in the non-display area NA, affecting the product appearance, or the distance between the edge of the light shielding layer 40 close to the display area AA and the edge of the display area AA is reduced, thereby causing the light shielding layer 40 to block the display area, affecting the display effect of the display panel.

[0037] Based on this, an embodiment of the present application provides a display panel, which includes a display area and a non-display area, wherein at least part of the non-display area surrounds the display area, including: a first substrate and a second substrate arranged opposite to each other, a display layer between the first substrate and the second substrate, the display layer including a light-emitting device, the light-emitting device being located in the display area, a first light-shielding layer and a second light-shielding layer being located in the non-display area, the second light-shielding layer being located on a side of the first light-shielding layer away from the display layer, and in a flattened state of the display panel, along a direction from the display area to the non-display area, a distance D1 between a first edge of the first light-shielding layer close to the display area and an edge of the display area, a distance D2 between a second edge of the second light-shielding layer close to the display area and an edge of the display area, D1<D2, that is, in a direction perpendicular to the first substrate where In the plane direction, the second shading layer is farther away from the display layer, and the first shading layer is closer to the display layer. The first shading layer closer to the display layer has a smaller sliding distance when folded, and the second shading layer farther away from the display layer has a larger sliding distance. When the display panel is flattened, the first edge of the first shading layer close to the display area side is closer to the edge of the display area, and the second edge of the second shading layer close to the display area side is farther from the edge of the display area. The first shading layer and the second shading layer arranged in this way can not only have a shielding effect, but also when the display panel is folded, the position of the first shading layer closer to the display layer remains basically unchanged, and the second shading layer farther away from the display layer will not block the display area even if it slides, which can avoid the shading layer affecting the display effect of the display panel and improve the performance of the display panel.

[0038] In order to better understand the technical solution and technical effects of the present application, specific embodiments will be described in detail below with reference to the accompanying drawings.

[0039] refer to Figure 2 FIG. 1 is a schematic diagram of the structure of a display panel 100 provided in an embodiment of the present application. Figure 3 is along Figure 2 Schematic diagram of the cross-sectional structure of the display panel taken along the direction BB'.

[0040] The display panel 100 provided in the embodiment of the present application includes a display area AA and a non-display area NA, and at least part of the non-display area NA surrounds the display area AA. The display area AA is an area for displaying, and the non-display area NA may be an area for setting a circuit structure for driving the display panel to display. The display area AA may occupy most of the display panel, and the display area AA may be set at the center of the display panel, such as the central area, and the non-display area NA may be an area outside the display area AA, and the non-display area NA may be defined as an edge area of ​​the display panel, such as the peripheral area.

[0041] The display panel 100 provided in the embodiment of the present application may be a flexible display panel, which is flexible and can be easily bent, folded or rolled. For example, the display panel 100 is a foldable display panel that can be folded and unfolded, a curved display panel having a curved display surface, a curved display panel having an area other than the curved display surface, a rollable display panel that can be rolled and / or unfolded, a stretchable display panel that can be stretched and / or not stretched, etc.

[0042] The display panel 100 provided in the embodiment of the present application includes a first substrate 110 and a second substrate 120 arranged opposite to each other. The first substrate 110 and the second substrate 120 may include an insulating material (for example, may be made of an insulating material), and the insulating material may be glass, quartz or a polymer resin. The first substrate 110 and the second substrate 120 may be a flexible substrate that is bendable, foldable and / or rollable. As an example, the first substrate 110 and the second substrate 120 may include polyimide.

[0043] In an embodiment of the present application, a display layer 130 is provided between the first substrate 110 and the second substrate 120. The display layer 130 includes a light-emitting device, which is used for light-emitting display. The light-emitting device is located in the display area AA, and the non-display area NA is used to set wiring for driving the light-emitting device to emit light.

[0044] The light-emitting device may include a plurality of light-emitting devices capable of emitting light of different colors. For example, the light-emitting device may include a red light-emitting device capable of emitting red light, a green light-emitting device capable of emitting green light, and a blue light-emitting device capable of emitting blue light. Exemplarily, in the embodiment of the present application, an organic light-emitting diode (OLED) may be selected to prepare each of the above-mentioned light-emitting devices. Alternatively, in the embodiment of the present application, the light-emitting device may also be set as a micro-light-emitting diode (Micro-LED) or a quantum dot light-emitting diode (QLED). That is, the display panel 100 may be an organic light-emitting display panel including an organic light-emitting diode, the display panel 100 may also be a micro-light-emitting diode display panel including a micro-light-emitting diode, the display panel 100 may also be a quantum dot light-emitting display panel including a quantum dot light-emitting diode, and the display panel 100 may also be an inorganic light-emitting display panel including an inorganic light-emitting device. In other embodiments, the display panel may also be of other types, which are not limited in the present application.

[0045] The display panel 100 provided in the embodiment of the present application includes a first light shielding layer 140 and a second light shielding layer 150. The first light shielding layer 140 and the second light shielding layer 150 are located in the non-display area NA and are used to shield the wiring of the non-display area NA and prevent the display panel 100 from leaking light, thereby improving the performance of the display panel. The material of the first light shielding layer 140 and the second light shielding layer 150 can be a light-proof material, such as an ink material.

[0046] The second light-shielding layer 150 is located on a side of the first light-shielding layer 140 away from the display layer 130, that is, in a direction perpendicular to the plane where the first substrate 110 is located, the second light-shielding layer 150 is farther away from the display layer 130, and the first light-shielding layer 140 is closer to the display layer 130. The first light-shielding layer 140 that is closer to the display layer 130 has a smaller sliding distance relative to the display layer 130 when folded, or even no sliding, and the second light-shielding layer 150 that is farther away from the display layer 130 has a larger sliding distance, that is, the farther away from the display layer 130, the greater the sliding distance of the light-shielding layer when folded.

[0047] In the embodiment of the present application, when the display panel is flattened, along the direction from the display area AA to the non-display area NA, the distance between the first edge 141 of the first light shielding layer 140 close to the display area AA and the edge of the display area AA is D1, and the distance between the second edge 151 of the second light shielding layer 150 close to the display area AA and the edge of the display area AA is D2, D1<D2, refer to Figure 3 As shown, that is to say, the first light-shielding layer 140 is closer to the edge of the display area AA, and the second light-shielding layer 150 is farther from the edge of the display area AA. The first light-shielding layer 140 and the second light-shielding layer 150 set in this way can not only shield the wiring of the non-display area NA, but also when the display panel is folded, the position of the first light-shielding layer 140 closer to the display layer 130 remains basically unchanged, and the second light-shielding layer 150 farther from the display layer 130 will not block the display area AA even if it slides, which can avoid the light-shielding layer from affecting the display effect of the display panel when it is folded, thereby improving the performance of the display panel.

[0048] Specifically, along the direction from the display area AA to the non-display area NA, the distance between the first edge 141 of the first light shielding layer 140 and the second edge 151 of the second light shielding layer 150 is in the range of 150 micrometers to 250 micrometers.

[0049] In the embodiment of the present application, when the display panel is in the folded state, reference Figure 4 As shown, Figure 4A schematic diagram of a folded state of a display panel provided in an embodiment of the present application. Along the direction from the display area AA to the non-display area NA, the distance between the first edge 141 of the first light shielding layer 140 close to the display area AA and the edge of the display area AA is D3, and the distance between the second edge 151 of the second light shielding layer 150 close to the display area AA and the edge of the display area AA is D4, 0≤D3≤D4, reference Figure 5 and Figure 6 As shown, Figure 5 for Figure 4 A partial cross-sectional structural schematic diagram of a display panel is provided, Figure 6 for Figure 4 Another partial cross-sectional structure schematic diagram of a display panel is provided, wherein: Figure 5 The schematic diagram of the partial cross section of the M region when the display panel is folded outwards, Figure 6 The corresponding partial cross-sectional diagram of the M region when the display panel is folded inwards. In other words, Figure 5 and Figure 6 The figure shows the relative changes of the first edge 141 of the first light shielding layer 140 and the second edge 151 of the second light shielding layer 150 relative to the edge of the display area AA when the display panel is folded outward, and the second light shielding layer 150 slides in the direction close to the display area AA when the display panel is folded inward, and the second light shielding layer 150 slides in the direction away from the display area AA when the display panel is folded. In the folded state of the display panel, similar to the flattened state of the display panel, the distance between the first light shielding layer 140 and the second light shielding layer 150 and the edge of the display area AA is at least greater than or equal to 0, that is, the second light shielding layer 150 and the first light shielding layer 140 will not cover the display area AA, and the first light shielding layer 140 is closer to the edge of the display area AA, and the second light shielding layer 150 is farther from the edge of the display area AA, so as to avoid the light shielding layer affecting the display effect of the display panel.

[0050] That is to say, by setting a first light shading layer 140 close to the display layer 130 and a second light shading layer 150 far from the display layer 130 on the display panel, the first light shading layer 140 is closer to the edge of the display area AA, and the second light shading layer 150 is farther from the edge of the display area AA. In this way, no matter whether the display panel is in a flat state or a folded state, the light shading layer will not affect the display effect of the display panel. In addition, the first light shading layer 140 is closer to the display layer 130, and the sliding distance is smaller than that of the display layer 130. The distance between the first edge 141 of the first light shading layer 140 close to the display area AA side and the edge of the display area AA is not affected by the state of the display panel. Therefore, the position of the wiring blocked by the first light shading layer 140 in the non-display area NA is fixed and will not affect the appearance of the product.

[0051] In an embodiment of the present application, when the display panel is converted from a flat state to a folded state, the sliding distance of the second shading layer 150 relative to the display layer 130 is |D2-D4|, and the sliding distance of the first shading layer 140 relative to the display layer 130 is |D1-D3|, |D2-D4|>|D1-D3|, that is, no matter whether the display panel is folded inward or outward, the first shading layer 140, which is closer to the display layer 130, has a smaller sliding distance relative to the display layer 130 when folded, or even no sliding, and the second shading layer 150, which is farther from the display layer 130, has a larger sliding distance, that is, the farther away from the display layer 130, the greater the sliding distance of the shading layer when folded.

[0052] In the embodiment of the present application, along the direction from the display area AA to the non-display area NA, the width of the first light shielding layer 140 is W1, the width of the second light shielding layer 150 is W2, W1>W2, refer to Figure 3 As shown, that is, the width of the first shading layer 140 is greater than the width of the second shading layer 150, which prevents the first edge 151 of the second shading layer 150 from being too close to the edge of the display area AA, and further prevents the second shading layer 150 from blocking the display area AA when in the folded state.

[0053] In practical applications, the third edge 142 of the first light shielding layer 140 away from the display area AA and the fourth edge 152 of the second light shielding layer 150 away from the display area AA may overlap or may not overlap.

[0054] When the third edge 142 and the fourth edge 152 do not overlap, in the flattened state of the display panel, along the direction from the display area AA to the non-display area NA, the distance between the third edge 142 of the first light shielding layer 140 away from the display area AA and the edge of the display area AA is D11, and the distance between the fourth edge 152 of the second light shielding layer 150 away from the display area AA and the edge of the display area AA is D22, D11<D22, refer to Figure 7 As shown, the two light shielding layers are provided in this way, which can not only shield the wiring arranged in the non-display area NA when the display panel is flattened, but also can prevent the second light shielding layer 150 from shielding the display area AA after the second light shielding layer 150 slides when the display panel is folded, thereby preventing the light shielding layer from affecting the display effect of the display panel when folded, and improving the performance of the display panel. In the embodiment of the present application, the first light shielding layer 140 and the second light shielding layer 150 are provided at the film layer position of the display panel, which can be specifically determined according to the structure of the display panel, and is specifically introduced below:

[0055] For the first possible implementation, please continue to refer to Figure 3The first light shielding layer 140 is located on a side surface of the display layer 130 close to the second substrate 120, and the second light shielding layer 150 is located on a side surface of the second substrate 120 close to the display layer 130. Figure 3 That is, the first light shielding layer 140 is disposed on the display layer 130 , and the second light shielding layer 150 is disposed on the second substrate 120 .

[0056] When the display panel is in a flattened state, along the direction from the display area AA to the non-display area NA, the distance between the third edge 142 of the first light shading layer 140 away from the display area AA and the edge of the display area AA is equal to the distance between the fourth edge 152 of the second light shading layer 150 away from the display area AA and the edge of the display area AA, that is, the projections of the third edge 142 of the first light shading layer 140 and the fourth edge 152 of the second light shading layer 140 on the first substrate 110 overlap.

[0057] In the embodiment of the present application, there is a second cover plate 160 between the second substrate 120 and the display layer 130. The second cover plate 160 may be made of glass. Specifically, the second cover plate 160 may be ultra-thin glass. Using ultra-thin glass as the second cover plate 160 may reduce the overall thickness of the display panel.

[0058] In a second possible implementation, the first light shielding layer 140 is located on a surface of the second cover plate 160 close to the display layer 130, and the second light shielding layer 150 is located on a surface of the second substrate 120 close to the display layer 130. Figure 7 That is to say, the first light shielding layer 140 is disposed on the second cover plate 160 , and the second light shielding layer 150 is disposed on the second substrate 120 .

[0059] In actual applications, the side edge of the second cover plate 160 away from the display area AA and the side edge of the second substrate 120 away from the display area AA do not overlap, and along the direction pointing from the display area AA to the non-display area NA, the width of the second cover plate 160 is smaller than the width of the second substrate 120. Correspondingly, the width of the first light-shielding layer 140 arranged on the second cover plate 160 is smaller than the width of the second light-shielding layer 150 arranged on the second substrate 120.

[0060] In the embodiment of the present application, a polarizing layer 170 is provided between the second substrate 120 and the display layer 130. Figure 8 As shown, specifically, the polarizing layer 170 is disposed between the second cover plate 160 and the display layer 130. The polarizing layer 170 covers the display area AA and at least a portion of the non-display area NA. In addition to resisting the interference of ambient light on the display brightness and contrast of the display area AA, the polarizing layer 170 can also protect the underlying film layer.

[0061] In a third possible implementation, at least one of the first light shielding layer 140 and the second light shielding layer 150 is located on a surface of the polarizing layer 170 close to the display layer 130, or at least one of the first light shielding layer 140 and the second light shielding layer 150 is located on a surface of the polarizing layer 170 away from the display layer 130. In other words, the first light shielding layer 140 or the second light shielding layer 150 may be disposed on any one surface of the polarizing layer 170, or may be disposed on both sides of the polarizing layer 170 at the same time. Figure 8 For example, the first light shielding layer 140 is disposed on the surface of the polarizing layer 170 close to the display layer 130 , and the second light shielding layer 150 is disposed on the surface of the second substrate 120 close to the display layer 130 .

[0062] In the embodiment of the present application, a color film (CF) layer 180 is provided between the second substrate 120 and the display layer 130. Fig. 9 As shown, specifically, the color filter layer 180 is disposed between the second cover plate 160 and the display layer 130. The color filter layer 180 includes a black matrix (BM) 181, and the black matrix 181 is used to divide the color filter layer 180, so that the color filter layer 180 corresponds to a plurality of pixel areas, and each pixel area includes any one of a red color filter layer, a green color filter layer, and a blue color filter layer. When the light emitted by the light emitting device passes through the pixel area, it passes through the color filter layer 180 of the corresponding color to emit light of the corresponding color, such as red light, green light, and blue light.

[0063] The black matrix 181 is used to block the light other than the pixel area from being emitted. The black matrix 181 can be formed of a black light-shielding organic material. The color filter layer 180 corresponds to multiple pixel areas. The color filter layer 181 is used to control the color of the emitted light to achieve color display. Therefore, the color filter layer 180 includes color filter layers of multiple colors. For example, the color filter layer 180 can be a red color filter layer, a green color filter layer, or a blue color filter layer. The color filter layer 180 covers the display area AA and part of the non-display area NA.

[0064] In a fourth possible implementation, the first light shielding layer 140 or the second light shielding layer 150 and the black matrix 181 are disposed in the same layer, which can save the process of disposing the light shielding layer, simplify the manufacturing process of the display panel, and reduce the manufacturing cost. Fig. 9 As shown, Fig. 9 An example is given for illustrating that the first light shielding layer 140 and the black matrix 181 are disposed on the same layer, and the second light shielding layer 150 is disposed on a surface of the second substrate 120 close to the display layer 130 .

[0065] The above specifically introduces the film layer positions of the first light shielding layer 140 and the second light shielding layer 150 arranged on the display panel. In order to further improve the light shielding effect of the light shielding layer and reduce the influence of the light shielding layer on the display effect of the display panel, multiple light shielding layers may be additionally arranged.

[0066] As a possible implementation, a third light shielding layer 190 may be further provided between the first light shielding layer 140 and the second light shielding layer 150. The third light shielding layer 190 is located in the non-display area NA. When the display panel is flattened, along the direction from the display area AA to the non-display area NA, the distance between the fifth edge 191 of the third light shielding layer 190 close to the display area AA and the edge of the display area AA is D5, the distance between the first edge 141 of the first light shielding layer 140 close to the display area AA and the edge of the display area AA is D1, and the distance between the second edge 151 of the second light shielding layer 150 close to the display area AA and the edge of the display area AA is D2, D1<D5<D2, refer to Fig.10 As shown, that is to say, the third light shading layer 140 is farther from the edge of the display area AA than the first light shading layer 140 is from the edge of the display area AA, and the third light shading layer 140 is closer to the edge of the display area AA than the second light shading layer 150 is from the edge of the display area AA. The first light shading layer 140, the second light shading layer 150 and the third light shading layer 190 arranged in this way can not only block the wiring of the non-display area NA, but also when the display panel is folded, the position of the first light shading layer 140 closer to the display layer 130 remains basically unchanged, and the third light shading layer 190 and the second light shading layer 150 farther from the display layer 130 will not block the display area AA even if they slide, so that the light shading layer can avoid affecting the display effect of the display panel when it is folded, thereby improving the performance of the display panel.

[0067] In the embodiment of the present application, in the folded state of the display panel, along the direction from the display area AA to the non-display area NA, the distance between the first edge 141 of the first light shielding layer 140 close to the display area AA and the edge of the display area AA is D3, the distance between the second edge 151 of the second light shielding layer 150 close to the display area AA and the edge of the display area AA is D4, and the distance between the fifth edge 191 of the third light shielding layer 190 close to the display area AA and the edge of the display area AA is D6, 0≤D3≤D6≤D4, with reference to Fig.11 and Fig.12 As shown, Fig.11 and Fig.12 They are Figure 4 A schematic diagram of another partial cross-sectional structure of a display panel is provided, wherein: Fig.11 The schematic diagram of the partial cross section of the M region when the display panel is folded outwards, Fig.12 The corresponding partial cross-sectional diagram of the M region when the display panel is folded inwards. In other words, Fig.11and Fig.12 The figure shows the relative changes of the first edge 141 of the first light shielding layer 140, the fifth edge 191 of the third light shielding layer 190 and the second edge 151 of the second light shielding layer 150 relative to the edge of the display area AA when the display panel is folded outward, the second light shielding layer 150 and the third light shielding layer 190 slide in the direction close to the display area AA, and when the display panel is folded inward, the second light shielding layer 150 and the third light shielding layer 190 slide in the direction away from the display area AA. In the folded state of the display panel, similar to the flattened state of the display panel, the distance between the first light shielding layer 140, the third light shielding layer 190 and the second light shielding layer 150 and the edge of the display area AA is at least greater than or equal to 0, that is, the second light shielding layer 150, the third light shielding layer 190 and the first light shielding layer 140 will not cover the display area AA, and the distances between the first light shielding layer 140, the third light shielding layer 190 and the second light shielding layer 150 and the edge of the display area AA increase successively to prevent the light shielding layer from affecting the display effect of the display panel.

[0068] That is to say, by setting the first light-shielding layer 140, the third light-shielding layer 190 and the second light-shielding layer 150 on the display panel, the light-shielding layer will not affect the display effect of the display panel regardless of whether the display panel is in a flat state or a folded state, and the first light-shielding layer 140 is closer to the display layer 130, and has a smaller sliding distance than the display layer 130. The distance between the first edge 141 of the first light-shielding layer 140 close to the display area AA side and the edge of the display area AA is not affected by the state of the display panel. Therefore, the position of the wiring blocked by the first light-shielding layer 140 in the non-display area NA is fixed and will not affect the appearance of the product.

[0069] Specifically, the first light shielding layer 140 is located on a side surface of the display layer 130 close to the second substrate 120, the second light shielding layer 150 is located on a side surface of the second substrate 120 close to the display layer 130, and the third light shielding layer 190 is located on a side surface of the second cover plate 160 close to the display layer 130. Fig.10 That is, the first light shielding layer 140 is disposed on the display layer 130 , the third light shielding layer 190 is disposed on the second cover plate 160 , and the second light shielding layer 150 is disposed on the second substrate 120 .

[0070] In practical applications, an adhesive layer 200 is provided between the display layer 130 and the polarizing layer 170, the display layer 130 and the color filter layer 180, the display layer 130 and the second cover plate 160, and the second cover plate 160 and the second substrate 120, so as to improve the bonding strength between different film layers of the display panel. At this time, the first light shielding layer 140, the third light shielding layer 190 or the second light shielding layer 150 can be provided at the same layer as the adhesive layer 200. Specifically, the thickness of the first light shielding layer 140, the third light shielding layer 190 or the second light shielding layer 150 can range from 3 to 8 microns and can be formed by a silk-screen printing process.

[0071] In an embodiment of the present application, if multiple light shielding layers are simultaneously provided in the display panel, for example, a first light shielding layer 140, a third light shielding layer 190, and a second light shielding layer 150 are provided in the display panel, in a direction perpendicular to the plane where the first substrate 110 is located, the distance between the first light shielding layer 140 and the display layer 130 is H1, the distance between the second light shielding layer 150 and the display layer 130 is H2, and the distance between the third light shielding layer 190 and the display layer 130 is H3, wherein (H3-H1) / (H2-H1)≥(D3-D1) / (D2-D1). In other words, the increase in the height of the light shielding layer is greater than the increase in the sliding distance of the light shielding layer. Such a setting can prevent the sliding distance of the light shielding layer from being too large when the display panel is turned from a flat state to a folded state, causing the light shielding layer to affect the display effect of the display panel.

[0072] In an embodiment of the present application, the display panel can be folded along a first direction, and the first direction can be parallel to the folding center axis of the display panel. Figure 2 The non-display area NA may include a first non-display area 101 and a second non-display area 102, wherein the extension direction of the first non-display area 101 is parallel to the first direction, and the extension direction of the second non-display area 102 intersects the first direction. Specifically, the extension direction of the second non-display area 102 may be perpendicular to the first direction.

[0073] That is, the extension direction of the first non-display area 101 is parallel to the folding center axis of the display panel, and the extension direction of the second non-display area 102 is perpendicular to the folding center axis of the display panel. When the display panel is folded along the folding center axis, the light shielding layer located in the second non-display area 102 will not slide relative to the display layer 130, and the light shielding layer located in the first non-display area 101 will slide relative to the display layer 130. Therefore, the first light shielding layer 140 and the second light shielding layer 150 can be provided in the first non-display area 101 to improve the display effect of the display panel. Fig.13 , which is a top view of a display panel in a folded state provided by an embodiment of the present application, Fig.13 The display panel is shown in a folded-out state.

[0074] In practical applications, the first non-display area 101 and the second non-display area 102 have an overlapping area. Figure 2 As shown, in order to avoid exposing the wiring arranged in the non-display area NA in the overlapping area when the display panel is folded, the overlapping distance between the first non-display area 101 and the second non-display area 102 can be set specifically according to the sliding distance of the light shielding layer. Specifically, the overlapping distance between the first non-display area 101 and the second non-display area 102 is greater than 150 microns.

[0075] In the examples of this application, reference is made to Fig.14 As shown, the non-display area NA includes a photosensitive area 103, and the photosensitive area 103 may be provided with a photosensitive element 210, and the photosensitive element 210 may be a camera. The photosensitive area 103 may be provided in the display area AA, for example, the photosensitive area 103 may be completely surrounded by the display area, or may be partially surrounded by the display area. The photosensitive area 103 may have a certain distance from the display area AA, so that the wiring at the photosensitive area 103 may be provided by utilizing the distance.

[0076] When the display panel is folded, the light-shielding layer arranged in the photosensitive area 103 will also slide relative to the display layer 130. The sliding light-shielding layer may affect the light intensity of the camera, and further affect the camera effect of the display device finally manufactured. Therefore, the first light-shielding layer 140 and the second light-shielding layer 150 can be arranged in the photosensitive area 103 to prevent the light-shielding layer from affecting the camera effect of the display device.

[0077] Specifically, the first light shielding layer 140 and the second light shielding layer 150 are arranged in the photosensitive area 103 in the same manner as the first light shielding layer 140 and the second light shielding layer 150 are arranged in the first non-display area 101. Figure 15-16 As shown, Fig.15 and Fig.16 is along Fig.14 Schematic diagram of the cross-sectional structure of the display panel taken along the direction BB'.

[0078] The embodiment of the present application provides a display panel, the display panel includes a display area and a non-display area, at least part of the non-display area surrounds the display area, including: a first substrate and a second substrate arranged opposite to each other, a display layer is provided between the first substrate and the second substrate, the display layer includes a light-emitting device, the light-emitting device is located in the display area, a first light-shielding layer and a second light-shielding layer are located in the non-display area, the second light-shielding layer is located on a side of the first light-shielding layer away from the display layer, in a flattened state of the display panel, along a direction from the display area to the non-display area, a distance D1 between a first edge of the first light-shielding layer on a side close to the display area and an edge of the display area, a distance D2 between a second edge of the second light-shielding layer on a side close to the display area and an edge of the display area, D1<D2, that is, in a plane perpendicular to the first substrate, In the direction of the surface, the second shading layer is farther away from the display layer, and the first shading layer is closer to the display layer. The first shading layer closer to the display layer has a smaller sliding distance when folded, and the second shading layer farther away from the display layer has a larger sliding distance. When the display panel is flattened, the first edge of the first shading layer close to the display area side is closer to the edge of the display area, and the second edge of the second shading layer close to the display area side is farther from the edge of the display area. The first shading layer and the second shading layer arranged in this way can not only have a shielding effect, but also when the display panel is folded, the position of the first shading layer closer to the display layer remains basically unchanged, and the second shading layer farther away from the display layer will not block the display area even if it slides, which can avoid the shading layer affecting the display effect of the display panel and improve the performance of the display panel.

[0079] An embodiment of the present application also provides a display device, comprising the display panel described in the above embodiment.

[0080] refer to Fig.17 , is a schematic diagram of a planar structure of a display device provided in an embodiment of the present application. As can be seen from the figure, the display device 1000 includes a display panel 100, and the display panel 100 is the display panel 100 described in any of the above embodiments.

[0081] In the embodiment of the present application, the display device 1000 may further include a photosensitive element 210, which may be a camera. The photosensitive element 210 overlaps with the photosensitive area 103. Fig.18 shown.

[0082] The display device 1000 provided in the embodiment of the present application may be a mobile phone, a computer, a television, a car display device or other display device with a display function, which is not specifically limited in the embodiment of the present application. The display device 1000 provided in the embodiment of the present application has the beneficial effects of the display panel 100 provided in the embodiment of the present application, and the specific description of the display panel in the above embodiment can be referred to, and the embodiment of the present application will not be repeated here.

[0083] The above is only a preferred implementation of the present application. Although the present application has been disclosed as a preferred embodiment, it is not intended to limit the present application. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present application without departing from the scope of the technical solution of the present application, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of protection of the technical solution of the present application.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a non-display area, at least a portion of the non-display area surrounds the display area, and includes: A first substrate and a second substrate arranged opposite to each other; A display layer is provided between the first substrate and the second substrate, the display layer includes a light emitting device, and the light emitting device is located in the display area; A first light shielding layer and a second light shielding layer are located in the non-display area, and the second light shielding layer is located on a side of the first light shielding layer away from the display layer; The side of the first light shielding layer away from the display area includes a third edge, and the side of the second light shielding layer away from the display area includes a fourth edge; When the display panel is in a flattened state, along a direction from the display area to the non-display area, the third edge is closer to the display area than the fourth edge.

2. The display panel according to claim 1, characterized in that: The distance between the third edge and the edge of the display area is D11, the distance between the fourth edge and the edge of the display area is D22, and D11<D22.

3. The display panel according to claim 1, characterized in that: The first light shielding layer comprises a first edge on one side close to the display area, and the second light shielding layer comprises a second edge on one side close to the display area; When the display panel is in a flattened state, along a direction from the display area to the non-display area, the first edge is closer to the display area than the second edge.

4. The display panel according to claim 3, characterized in that: The distance between the first edge and the edge of the display area is D1, the distance between the second edge and the edge of the display area is D2, and D1<D2.

5. The display panel according to claim 3, characterized in that: When the display panel is in a folded state, along a direction from the display area to the non-display area, the first edge is closer to the display area than the second edge.

6. The display panel according to claim 5, characterized in that: When the display panel is in the folded state, along the direction from the display area to the non-display area, the distance between the first edge and the edge of the display area is D3, the distance between the second edge and the edge of the display area is D4, and 0≤D3≤D4.

7. The display panel according to claim 6, characterized in that: |D2-D4|>|D1-D3|.

8. The display panel according to claim 3, characterized in that: A third light-shielding layer is provided between the first light-shielding layer and the second light-shielding layer; The third light-shielding layer comprises a fifth edge on one side close to the display area. When the display panel is flattened, along the direction from the display area to the non-display area, the fifth edge is closer to the display area than the second edge.

9. The display panel according to claim 8, characterized in that: The distance between the fifth edge and the edge of the display area is D5, and D1<D5<D2.

10. The display panel according to claim 8, characterized in that: When the display panel is in a folded state, along a direction from the display area to the non-display area, the first edge is closer to the display area than the fifth edge, and the fifth edge is closer to the display area than the second edge.

11. The display panel according to claim 10, characterized in that: When the display panel is in the folded state, along the direction from the display area to the non-display area, the distance between the first edge of the first shading layer and the edge of the display area is D3, the distance between the second edge and the edge of the display area is D4, and the distance between the fifth edge and the edge of the display area is D6, 0≤D3≤D6≤D4.

12. The display panel according to claim 8, characterized in that: In a direction perpendicular to the plane where the first substrate is located, the distance between the first light-shielding layer and the display layer is H1, the distance between the second light-shielding layer and the display layer is H2, and the distance between the third light-shielding layer and the display layer is H3, wherein (H3-H1) / (H2-H1)≥(D3-D1) / (D2-D1).

13. The display panel according to claim 8, characterized in that: A second cover plate is provided between the second substrate and the display layer, the first shading layer is located on a surface of the display layer close to the second substrate, the third shading layer is located on a surface of the second cover plate close to the display layer, and the second shading layer is located on a surface of the second substrate close to the display layer.

14. The display panel according to claim 1, characterized in that: Along the direction from the display area to the non-display area, the width of the first light shielding layer is W1, the width of the second light shielding layer is W2, and W1>W2.

15. The display panel according to claim 1, characterized in that: The first light shielding layer is located on a surface of the display layer close to the second substrate, and the second light shielding layer is located on a surface of the second substrate close to the display layer.

16. The display panel according to claim 1, characterized in that: A second cover plate is provided between the second substrate and the display layer, the first light shielding layer is located on a surface of the second cover plate close to the display layer, and the second light shielding layer is located on a surface of the second substrate close to the display layer.

17. The display panel according to claim 1, characterized in that: A polarizing layer is provided between the second substrate and the display layer, and at least one of the first shading layer and the second shading layer is located on a surface of the polarizing layer close to the display layer, or at least one of the first shading layer and the second shading layer is located on a surface of the polarizing layer away from the display layer.

18. The display panel according to claim 1, characterized in that: A color filter layer is provided between the second substrate and the display layer, the color filter layer includes a black matrix, and the first light shielding layer or the second light shielding layer is provided in the same layer as the black matrix.

19. The display panel according to any one of claims 1, characterized in that: The non-display area includes a first non-display area and a second non-display area, the extension direction of the first non-display area is parallel to the first direction, the extension direction of the second non-display area intersects the first direction, and the display panel is folded along the first direction; The first light shielding layer and the second light shielding layer are located in the first non-display area.

20. The display panel according to any one of claims 1, characterized in that: The non-display area includes a photosensitive region, and the first light shielding layer and the second light shielding layer are located in the photosensitive region.

21. A display panel, characterized in that: The display panel includes a display area and a non-display area, at least a portion of the non-display area surrounds the display area, and includes: A first substrate and a second substrate arranged opposite to each other; A display layer is provided between the first substrate and the second substrate, the display layer includes a light emitting device, and the light emitting device is located in the display area; A first light shielding layer and a second light shielding layer are located in the non-display area, and the second light shielding layer is located on a side of the first light shielding layer away from the display layer; The first light shielding layer comprises a first edge on one side close to the display area, and the second light shielding layer comprises a second edge on one side close to the display area; When the display panel is in a flattened state, along the direction from the display area to the non-display area, the first edge is closer to the display area than the second edge; when the display panel is in a folded state, along the direction from the display area to the non-display area, the first edge is closer to the display area than the second edge.

22. The display panel according to claim 21, characterized in that: In a flattened state of the display panel, along a direction from the display area to the non-display area, a distance between the first edge and an edge of the display area is D1, a distance between the second edge and an edge of the display area is D2, and D1<D2; When the display panel is in the folded state, along the direction from the display area to the non-display area, the distance between the first edge and the edge of the display area is D3, the distance between the second edge and the edge of the display area is D4, and 0≤D3≤D4.

23. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-22.

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