Display panel and display device

Abstract

Embodiments of the present application disclose a display panel and a display device, the display panel comprising a first region, a second region and an opening, the opening being filled with a light shielding material. The opening between the first sub-region and the first region is a first opening, the first opening extending along a first direction, the width of the first opening in a direction perpendicular to the first direction being D1, and the depth of the first opening in a thickness direction of the display panel being H1. The opening located in the second sub-region is a second opening, the second opening extending along a second direction, the width of the second opening in a direction perpendicular to the second direction being D2, and the depth of the second opening in the thickness direction of the display panel being H2, wherein D1>D2, and / or H1>H2. The first opening and the second opening filled with the light shielding material respectively block the influence of light between the first sub-region and the first region and between the second sub-region and the first sub-region, thereby improving the display effect, and by setting D1>D2 and / or H1>H2, the transmittance of the display panel is improved.

Description

A display panel and display device Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] During the light-emitting process of the display panel, the light emitted by the light-emitting element will be emitted in all directions around the light-emitting element as the center. This can easily cause the light of adjacent light-emitting elements to interfere with each other, thereby affecting the display effect of the display panel. Summary of the Invention

[0003] This invention provides a display panel and a display device that improves the display effect by blocking the light influence between a first sub-region and a first region through a first opening filled with light-shielding material, and blocking the light influence between a second sub-region and a first sub-region through a second opening filled with light-shielding material.

[0004] In a first aspect, embodiments of the present invention provide a display panel, the display panel including a first region and a second region; the second region at least partially surrounds the first region; the display panel includes an opening, the opening being filled with a light-shielding material;

[0005] The second region includes a first sub-region and a second sub-region. The first sub-region includes a light-emitting element. The opening between the first sub-region and the first region is a first opening. The first opening extends along a first direction. The width of the first opening perpendicular to the first direction is D1, and the depth along the thickness direction of the display panel is H1. The opening located in the second sub-region includes a second opening. The second opening extends along a second direction. The width of the second opening perpendicular to the second direction is D2, and the depth along the thickness direction of the display panel is H2. Wherein, D1 > D2; and / or, H1 > H2.

[0006] The first direction intersects the second direction, and both the first direction and the second direction are parallel to the plane on which the display panel is located.

[0007] Secondly, embodiments of the present invention also provide a display device, including the display panel described in the first aspect.

[0008] The display panel provided by the present invention has a first opening between a first sub-region and a second opening in a second sub-region. The first opening, filled with a light-shielding material, extends along a first direction, and the second opening, also filled with a light-shielding material, extends along a second direction. The width of the first opening perpendicular to the first direction is D1, and its depth along the thickness direction of the display panel is H1. The width of the second opening perpendicular to the second direction is D2, and its depth along the thickness direction of the display panel is H2, wherein D1 > D2, and / or H1 > H2. In this way, the first opening blocks the mutual influence of light between the first sub-region and the first region, and the second opening blocks the mutual influence of light between the second sub-region and the first sub-region, thereby improving the display effect of the display panel. In addition, when the second opening with a smaller depth and / or width is located between the first region and the second sub-region, the transmittance area of ​​the first region along the first direction can be increased, thus improving the transmittance of the display panel. When the second opening with a smaller depth and / or width is located between the first sub-region and the second sub-region, the setting area of ​​the first sub-region can be increased, which is beneficial to increasing the pixel density of the display panel and improving the display effect. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, although the drawings described below are some specific embodiments of the present invention, those skilled in the art can extend and extend the basic concepts of the device structure, driving method and manufacturing method disclosed and indicated by various embodiments of the present invention to other structures and drawings. Undoubtedly, these should all be within the scope of the claims of the present invention.

[0010] Figure 1 is a cross-sectional structural diagram of a display panel provided by the present invention;

[0011] Figure 2 is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0012] Figure 3 is a simplified cross-sectional diagram of one of the cross-sectional structures along the C-C' direction in Figure 2;

[0013] Figure 4 is a simplified cross-sectional diagram of one of the cross-sectional structures along the D-D' direction in Figure 2;

[0014] Figure 5 is a simplified cross-sectional diagram of one of the cross-sectional structures along the E-E' direction in Figure 2;

[0015] Figure 6 is a schematic diagram of a first region lifting provided by an embodiment of the present invention;

[0016] Figure 7 is a simplified cross-sectional diagram of another structure along the C-C' direction in Figure 2;

[0017] Figure 8 is a simplified cross-sectional diagram of another structure along the D-D' direction in Figure 2;

[0018] Figure 9 is a simplified cross-sectional diagram of another structure along the C-C' direction in Figure 2;

[0019] Figure 10 is a simplified cross-sectional diagram of another structure along the D-D' direction in Figure 2;

[0020] Figure 11 is a simplified cross-sectional diagram of another structure along the C-C' direction in Figure 2;

[0021] Figure 12 is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0022] Figure 13 is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0023] Figure 14 is a schematic cross-section diagram along the F-F' direction in Figure 13;

[0024] Figure 15 is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0025] Figure 16 is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0026] Figure 17 is a schematic cross-section diagram along the G-G' direction in Figure 16;

[0027] Figure 18 is a simplified cross-sectional diagram of another structure along the C-C' direction in Figure 2;

[0028] Figure 19 is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0029] Figure 20 is a simplified cross-sectional diagram of another structure along the C-C' direction in Figure 2;

[0030] Figure 21 is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this invention. Obviously, the described embodiments are only some embodiments of this invention, not all embodiments. Based on the basic concepts disclosed and indicated in the embodiments of this invention, all other embodiments obtained by those skilled in the art are within the scope of protection of this invention.

[0032] Figure 1 is a schematic cross-sectional view of a display panel provided by the present invention. Referring to Figure 1, the display panel includes a substrate 10' and a multilayer insulating layer 20' located on one side of the substrate 10'. The display panel also includes a light-emitting element setting area AA' and a transparent area BB'. The light-emitting element setting area AA' includes a thin-film transistor T' disposed in the multilayer insulating layer 20' and a light-emitting element 30' located on the side of the multilayer insulating layer 20' away from the substrate 10'. The light-emitting element 30' is electrically connected to the thin-film transistor T', and the light-emitting element 30' is controlled to emit light normally by the thin-film transistor T'. The transparent area BB' includes the substrate 10', which can be a transparent substrate so that the transparent area BB' can transmit light. Furthermore, the multilayer insulating layer 20' includes a first planarization layer and a second planarization layer located on the side away from the substrate 10'. Along the direction from the light-emitting element setting area AA' to the transparent area BB', the first and second planarization layers have a stepped structure on the side away from the light-emitting element 30'. The stepped structure is covered with a light-shielding structure 40'. The light-shielding structure 40' blocks the light emitted by the light-emitting element 30' from being reflected through the substrate 10' to the transparent area BB', thereby exiting into the light-emitting element setting area AA' located on the other side of the transparent area BB', thus affecting the display effect of the light-emitting element 30' in the light-emitting element setting area AA' on the other side.

[0033] However, the inventors discovered that the light emitted by the light-emitting element 30' is emitted in all directions. Therefore, not only is there mutual light interference between the light-emitting element setting areas AA' located on both sides of the transmission area BB' along the direction from the light-emitting element setting area AA' to the transmission area BB', but there is also mutual light interference between two adjacent light-emitting element setting areas AA' along the direction perpendicular to the light-emitting element setting area AA' to the transmission area BB'. The scheme in Figure 1 cannot completely block the mutual light interference between two adjacent light-emitting element setting areas AA', and the scheme of setting the light-shielding structure 40' on the stepped structure is not conducive to increasing the transmission area of ​​the transmission area BB'.

[0034] Based on this, the display panel provided in the embodiments of the present invention includes a first opening disposed between a first sub-region and a first region, and a second opening located in a second sub-region. Both the first opening and the second opening are filled with light-shielding material. The first opening extends along a first direction, and the second opening extends along a second direction. The first direction and the second direction intersect, and both the first direction and the second direction are parallel to the plane where the display panel is located. Thus, the first opening blocks the mutual influence of light between the first sub-region and the first region, that is, blocks the mutual influence of light between two adjacent first sub-regions along the second direction. The second opening blocks the influence of light between the second sub-region and the first region, that is, blocks the mutual influence of light between two adjacent first sub-regions along the first direction. Furthermore, since the second opening extends along the second direction, meaning the second opening is located not only between the first region and the second sub-region, but also between the first sub-region and the second sub-region, the width D2 of the second opening is set to be smaller than the width D1 of the first opening, and / or the depth H2 of the second opening is smaller than the depth H1 of the first opening. When the second opening with a smaller depth and / or width is located between the first region and the second sub-region, the transmittance area of ​​the first region along the first direction can be increased, thereby improving the transmittance of the display panel. When the second opening with a smaller depth and / or width is located between the first sub-region and the second sub-region, the setting area of ​​the first sub-region can be increased, which is beneficial to increasing the pixel density of the display panel and improving the display effect of the display panel.

[0035] The above is the core idea of ​​this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0036] Figure 2 is a schematic diagram of a display panel provided in an embodiment of the present invention. Figure 3 is a simplified cross-sectional view of a structure along the C-C' direction in Figure 2. Figure 4 is a simplified cross-sectional view of a structure along the D-D' direction in Figure 2. Figure 5 is a simplified cross-sectional view of a structure along the E-E' direction in Figure 2. Figure 6 is a schematic diagram of a first region lifting provided in an embodiment of the present invention. Referring to Figures 2-6, the display panel provided in this embodiment of the invention includes a first region AA and a second region BB. The second region BB at least partially surrounds the first region AA. The display panel includes an opening 10 filled with a light-shielding material. The second region BB includes a first sub-region BB1 and a second sub-region BB2. The first sub-region BB1 includes a light-emitting element 20. The opening between the first sub-region BB1 and the first region AA is a first opening 110, which extends along a first direction X. The width of the first opening 110 perpendicular to the first direction X is D1, and its depth along the thickness direction of the display panel is H1. The opening 10 located in the second sub-region BB2 is a second opening 120, which extends along a second direction Y. The width of the second opening 120 perpendicular to the second direction Y is D2, and its depth along the thickness direction of the display panel is H2. Wherein, D1 > D2, and / or, H1 > H2. The first direction X intersects the second direction Y, and both the first direction X and the second direction Y are parallel to the plane of the display panel.

[0037] Specifically, as shown in Figures 2-5, the display panel includes a first area AA and a second area BB. The second area BB at least partially surrounds the first area AA, and the transmittance of the first area AA is greater than that of the second area BB. That is, the first area AA can be a transparent display area, and the second area BB can be a non-transparent display area. The first area AA does not have any light-emitting elements or other devices to ensure its transmittance. The second area BB has light-emitting elements, driving circuits for driving the light-emitting elements, and metal traces to ensure normal light emission. The second area BB also includes a first sub-area BB1 and a second sub-area BB2. The first sub-area BB1 can be a light-emitting element setting area, containing multiple light-emitting elements 20. The light emitted by the light-emitting elements 20 can be emitted in various directions. The second sub-area BB2 can be a trace setting area, containing some metal traces for controlling the light emission of the light-emitting elements. The first sub-region BB1 can be located on opposite sides of the first region AA along the second direction Y, and the second sub-region BB2 can be located on opposite sides of the first region AA along the first direction X. The first direction X can be the arrangement direction of the light-emitting elements 20 in a continuous arrangement, and the second direction can be the arrangement direction of the light-emitting elements that set the intervals in the first region AA. The first direction X and the second direction Y intersect, and both the first direction X and the second direction Y are parallel to the plane where the display panel is located.

[0038] The display panel has an opening 10 filled with a light-blocking material, which can be a black light-absorbing material or a reflective material, or other materials with light-blocking capabilities. Specifically, the opening 10 between the first region AA and the first sub-region BB1 is a first opening 110. The first opening 110 extends along the first direction X, thereby blocking the light interference between the first sub-region BB1 and the first region AA. In other words, since the first sub-region BB1 is located on opposite sides of the first region AA along the second direction Y, and there is a first opening 110 between the first region AA and the first sub-region BB1, the mutual light interference between two adjacent first sub-regions BB1 along the second direction Y can be blocked by the first opening 110. The second opening 120 is located in the second sub-region BB2. Since the second opening 120 extends along the second direction Y, that is, the second opening 120 is not only located between the first region AA and the second sub-region BB2, but also between the first sub-region BB1 and the second sub-region BB2. Thus, the second opening 120 can block the mutual influence of light between the first sub-region BB1 and the second sub-region BB2. Furthermore, the light influence between two adjacent first sub-regions BB1 along the first direction X can be blocked by the second opening 120 located between them. In this way, the first opening 110 and the second opening 120 can respectively block the mutual influence of light between two adjacent first sub-regions BB1 along the second direction Y, and the mutual influence of light between two adjacent first sub-regions BB1 along the first direction X, thereby improving the display effect of the display panel.

[0039] It should be noted that, as shown in Figure 6, the opening 10 is filled with light-shielding material. During the filling process, due to process reasons, after filling the opening 10, the light-shielding material will extend a distance along the extension direction perpendicular to the opening 10 to form an opening extension L. The greater the depth and / or width of the opening, the greater the extension distance of the opening extension L.

[0040] Furthermore, as shown in Figure 6, when the second opening 120 is located between the first region AA and the second sub-region BB2, since the width D2 of the second opening 120 is smaller than the width D1 of the first opening 110, and / or the depth H2 of the second opening 120 is smaller than the depth H1 of the first opening 110, the extension distance of the opening extension L of the second opening 120 is smaller than the extension distance of the opening extension L of the first opening 110. That is, when the second opening 120 with a smaller depth and / or width is located between the first region AA and the second sub-region BB2, the transmittance area of ​​the first region AA along the first direction X can be increased, thereby improving the transmittance of the display panel. Similarly, when the second opening 120 is located between the first sub-region BB1 and the second sub-region BB2, since the width D2 of the second opening 120 is smaller than the width D1 of the first opening 110, and / or the depth H2 of the second opening 120 is smaller than the depth H1 of the first opening 110, the extension distance of the opening extension L of the second opening 120 is smaller than the extension distance of the opening extension L of the first opening 110. That is, when the second opening 120 with a smaller depth and / or width is located between the first sub-region BB1 and the second sub-region BB2, the setting area of ​​the first sub-region BB1 can be increased, which is beneficial to increasing the pixel density of the display panel and improving the display effect of the display panel.

[0041] It should be noted that Figure 6 is used to better illustrate that the second opening 120 can increase the transmission area of ​​the first region AA compared to the first opening 110, thereby making the extension direction of the second opening 120 and the first opening 110 the same, so as to illustrate it in the same figure. In reality, the extension directions of the first opening 110 and the second opening 120 are different.

[0042] It should also be noted that, as illustrated in Figures 3 and 4, the depth H1 of the first opening 110 is greater than the depth H2 of the second opening 120. In other embodiments, Figure 7 is a simplified cross-sectional view of another structure along the C-C' direction in Figure 2, and Figure 8 is a simplified cross-sectional view of another structure along the D-D' direction in Figure 2. Referring to Figures 7 and 8, the width D1 of the first opening 110 can be greater than the width D2 of the second opening 120, achieving the same effect. In yet another embodiment, Figure 9 is a simplified cross-sectional view of another structure along the C-C' direction in Figure 2, and Figure 10 is a simplified cross-sectional view of another structure along the D-D' direction in Figure 2. Referring to Figures 9 and 10, the depth H1 of the first opening 110 is greater than the depth H2 of the second opening 120, and the width D1 of the first opening 110 is greater than the width D2 of the second opening 120. Those skilled in the art can set these dimensions as needed.

[0043] In summary, the display panel provided by the embodiments of the present invention blocks the light interference between the first sub-region and the first region by setting a first opening between the first region and the first sub-region, that is, blocking the mutual influence of light between two adjacent first sub-regions along the second direction. It also blocks the mutual influence of light between the first sub-region and the second sub-region by setting a second opening in the second sub-region, that is, blocking the mutual influence of light between two adjacent first sub-regions along the second direction. Furthermore, by setting the width of the first opening perpendicular to the first direction to D1 and its depth along the thickness direction of the display panel to H1, and the width of the second opening perpendicular to the second direction to D2 and its depth along the thickness direction of the display panel to H2, such that D1 > D2 and / or H1 > H2, the depth and / or width of the second opening are smaller. Therefore, when the second opening with a smaller depth and / or width is located between the first region and the second sub-region, the transmittance area of ​​the first region along the first direction can be increased, thereby improving the transmittance of the display panel. When the second opening with a smaller depth and / or width is located between the first sub-region and the second sub-region, the setting area of ​​the first sub-region can be increased, which is beneficial for increasing the pixel density of the display panel and improving the display effect.

[0044] Optionally, Figure 11 is a simplified cross-sectional view of another structure along the C-C' direction in Figure 2. Referring to Figure 11, the first sub-region BB1 includes a thin-film transistor 30. Along the direction from the first region AA to the first sub-region BB1, the first opening 110 at least partially overlaps with the thin-film transistor 30.

[0045] Specifically, as shown in Figure 11, the first sub-region BB1 can be a light-emitting element setting area. The first sub-region BB1 can include a light-emitting element 20 and a thin-film transistor 30 electrically connected to the light-emitting element 20. The light-emitting element includes a light-emitting body 210, a first electrode 220 and a second electrode 230. The film layer on which the thin-film transistor 30 is located includes an active layer, a gate metal layer, an insulating layer and a source-drain metal layer stacked sequentially. The channel 310 of the thin-film transistor 30 is located in the active layer, the gate 320 of the thin-film transistor 30 is located in the gate metal layer, and the source 330 and drain 340 of the thin-film transistor 30 are located in the source-drain metal layer. The first electrode 220 of the light-emitting element 20 can be an anode, and the drain 340 of the thin-film transistor 30 is connected to the anode, thereby controlling the light-emitting element 20 to emit light through the thin-film transistor 30. Since the light emitted by the light-emitting element 20 is emitted in all directions, the light emitted obliquely below the light-emitting element 20 in the first sub-regions BB1 located on opposite sides of the first region AA along the second direction will be reflected between the film layers and emitted through the first region AA to the channel 310 of the thin-film transistor 30 in the other first sub-region BB1. This causes an increase in leakage current in the thin-film transistor 30 in the other first sub-region BB1, resulting in a shift in the brightness and color of its light-emitting element 20. To address this, a first opening 110 is provided between the first sub-region BB1 and the first region AA. Along the direction from the first region AA to the first sub-region BB1, the first opening 110 at least partially overlaps with the thin-film transistor 30. Furthermore, along the direction from the first region AA to the first sub-region BB1, the first opening 110 at least covers the channel 310 of the thin-film transistor 30 to prevent mutual interference of light between two adjacent first sub-regions BB1 along the second direction Y, thereby generating carriers in the channel 310 of the thin-film transistor 30 and causing leakage current.

[0046] Optionally, based on the above embodiments, referring to Figures 2 and 11, the first sub-region BB1 includes a thin-film transistor 30, the thin-film transistor 30 includes a first side Y1 and a second side Y2 opposite to each other in the second direction Y, the second region BB includes at least two first sub-regions BB1, and the first side Y1 of the at least two first sub-regions BB1 includes a first opening 110.

[0047] Specifically, as shown in Figures 2 and 11, the second region BB includes at least two first sub-regions BB1. These at least two first sub-regions BB1 can be adjacent in any direction, such as two first sub-regions BB1 located on opposite sides of the first region AA along the second direction Y, or two first sub-regions BB1 located on opposite sides of the second sub-region BB2 along the first direction X. They can also be any two non-adjacent first sub-regions BB1. Each first sub-region BB1 includes a thin-film transistor 30. The thin-film crystal 30 includes a first side Y1 and a second side Y2 opposite to each other in the second direction Y. The at least two first sub-regions BB1... Each of the first sides Y1 includes a first opening 110. The first opening 110, located on the first side Y1 of the first sub-region BB1, blocks the mutual influence of light between the first sub-region BB1 and the first region AA, i.e., blocks the mutual influence of light between two adjacent first sub-regions BB1 along the second direction Y. Furthermore, along the direction from the first region AA to the first sub-region BB1, the first opening 110 can at least partially overlap with the thin-film transistor 30. This avoids the mutual influence of light between two adjacent first sub-regions BB1, thereby generating charge carriers in the channel 310 of the thin-film transistor 30, leading to leakage and improving the display effect of the display panel. In addition, by placing the first opening 110 on the same side of at least two first sub-regions BB1, the opening arrangement is simple and can increase the area of ​​the first region AA of the display panel, thereby improving the transmittance of the display panel.

[0048] It should be noted that Figures 2 and 11 only exemplarily show that the first opening 110 is provided on the first side Y1 of the first sub-region BB1. Figure 12 is a structural schematic diagram of another display panel provided by an embodiment of the present invention, Figure 13 is a structural schematic diagram of another display panel provided by an embodiment of the present invention, and Figure 14 is a cross-sectional schematic diagram along the F-F' direction in Figure 13. Referring to Figure 12, the first opening 110 can also be provided on the second side Y2 of the first sub-region BB1, achieving the same effect as the above embodiment. Referring to Figures 13 and 14, the first side Y1 and the second side Y2 of the first sub-region BB1 both include the first opening 110. In other words, a first sub-region BB1 includes two first openings 110, which are located on different sides of the first sub-region BB1. Thus, the light blocking effect can be improved by the two first openings 110 located on different sides of the first sub-region BB1, further improving the display effect of the display panel.

[0049] It should also be noted that the above embodiments limit the position of the first opening 110, but do not limit the size of the first opening 110. It is only necessary to satisfy that the width D1 of the first opening 110 is greater than the width D2 of the second opening 120, and / or the depth H1 of the first opening 110 is greater than the depth H2 of the second opening 120.

[0050] Optionally, referring to Figures 2 and 4, the second sub-region BB2 includes a substrate 50 and a signal line 40 located on one side of the substrate 50. In the direction from the first region AA to the second sub-region BB2, the second opening 120 at least partially overlaps with the signal line 40.

[0051] Specifically, as shown in Figures 2 and 4, the display panel includes a substrate 50 and a signal line 40 located on one side of the substrate 50. The display panel also includes a second opening 120, which extends along the second direction Y, i.e. along the first direction X. The second opening 120 includes a portion corresponding to the first sub-region BB1 and a portion corresponding to the first region AA. Furthermore, it extends along the direction from the first region AA to the second region BB2, which can also be understood as the direction from the first sub-region BB1 to the second sub-region BB2. Thus, along the direction from the first sub-region BB1 to the second sub-region BB2, the second opening 120 is set to at least partially overlap with the signal line 40. The second opening 120 blocks the light emitted obliquely downward from the light-emitting element 20 from being reflected by the substrate or the signal line 40 into another first sub-region BB1, causing light crosstalk between two adjacent first sub-regions BB1 along the first direction X, generating a halo phenomenon, and improving the display effect of the display panel.

[0052] Optionally, referring to Figure 4, the signal line 40 includes a first signal transmission trace 410 and a second signal transmission trace 420 disposed in different layers. The first signal transmission trace 410 is located on the side of the second signal transmission trace 420 closer to the substrate 50. The second opening 120 includes an opening bottom surface 1201 and an opening top surface 1202. The opening bottom surface 1201 is located on the side of the first signal transmission trace 410 closer to the substrate 50, and the opening top surface 1202 is located on the side of the second signal transmission trace 420 away from the first signal transmission trace 410.

[0053] Specifically, as shown in Figure 4, the signal line 40 includes a first signal transmission trace 410 and a second signal transmission trace 420 located on one side of the substrate 50 and disposed in different layers. The first signal transmission trace 410 is located on the side of the second signal transmission trace 420 closer to the substrate 50, which can be understood as the first signal trace 410 being the outermost part of the signal line 40 on the side closer to the substrate 50. The second opening 120 includes an opening bottom surface 1201, which can be the outermost part of the second opening 120 on the side closer to the substrate 50. Therefore, the opening bottom surface 1201 is located on the side of the first signal transmission trace 410 closer to the substrate 50, that is, the opening bottom surface 1201 is closer to the substrate 50 than the first signal transmission trace 410. In this way, it prevents the light emitted from the first sub-region BB1 from being reflected by the first signal transmission trace 410 and illuminating another adjacent first sub-region BB1 along the first direction X, thus preventing crosstalk between the two adjacent first sub-regions BB and improving the display effect of the display panel. In addition, the second opening 120 also includes an opening top surface 1202, which can be the outermost side of the second opening 120 away from the substrate 50. Thus, the opening top surface 1202 is located on the side of the second signal transmission trace 420 away from the first signal transmission trace 410. That is, the opening top surface 1202 is farther away from the substrate 50 than the second signal transmission trace 420. In this way, it prevents the light emitted from the first sub-region BB1 from being reflected by the second signal transmission trace 420 and then emitted from the opening top surface 1202 of the second opening 120, which would cause light crosstalk between two adjacent first sub-regions BB and improve the display effect of the display panel.

[0054] It should be noted that the above embodiments only limit the second opening 120, and do not limit the first opening 110. It is only necessary to satisfy that the depth H1 of the first opening 110 is greater than the depth of the second opening 120, and / or that the width D1 of the first opening 110 is greater than the width D2 of the second opening 120.

[0055] Optionally, referring to Figures 2 and 4, the second sub-region BB2 includes a signal line 40, which includes a third side X1 and a fourth side X2 opposite each other in the first direction X. The second region BB includes at least two second sub-regions BB2, and the third side X1 of the at least two second sub-regions BB2 includes a second opening 120.

[0056] Specifically, as shown in Figure 2, the second region BB includes at least two second sub-regions BB2. Multiple second sub-regions BB2 can be arranged along the first direction X, meaning the second sub-regions BB2 can be located on opposite sides of the first region AA along the first direction X. As shown in Figure 4, the second sub-region BB2 includes a substrate 50 and a signal line 40 located on one side of the substrate 50. The signal line 40 includes a third side X1 and a fourth side X2 opposite to each other along the first direction X. Each of the at least two second sub-regions BB2 has a second opening 120 on its third side X1. The second opening 120 on the third side X1 of the second sub-region BB2 blocks the mutual interference of light between the second sub-region BB2 and the first sub-region BB1, i.e., blocks the crosstalk of light between two adjacent first sub-regions BB1 along the first direction X. Furthermore, by placing the second opening 120 on the same side of each of the at least two second sub-regions BB2, the area of ​​the first region AA of the display panel can be increased, thereby improving the transmittance of the display panel.

[0057] It should be noted that Figures 2 and 4 only exemplify the arrangement of the second openings 120 on the third side X1 of the second sub-region BB2. In other embodiments, Figure 15 is a schematic diagram of another display panel structure provided by an embodiment of the present invention. Referring to Figure 15, the second openings 120 can also be arranged on the fourth side X2 of the second sub-region BB2, achieving the same effect as the above embodiments. In yet another embodiment, Figure 16 is a schematic diagram of another display panel structure provided by an embodiment of the present invention, and Figure 17 is a cross-sectional schematic diagram along the G-G' direction in Figure 16. Referring to Figures 16 and 17, the second openings 120 can be provided on both the third side X1 and the fourth side X2 of the second sub-region BB2. In other words, a second sub-region BB2 includes two second openings 120, and the two second openings 120 are located on different sides of the second sub-region BB2. Thus, the light blocking effect can be improved by the two second openings 120 located on different sides of the second sub-region BB2, further improving the display effect of the display panel.

[0058] It should also be noted that the above embodiments limit the position of the second opening 120, but do not limit the size of the second opening 120. It is only necessary to satisfy that the width D1 of the first opening 110 is greater than the width D2 of the second opening 120, and / or the depth H1 of the first opening 110 is greater than the depth H2 of the second opening 120.

[0059] Optionally, based on the above embodiments, referring to Figure 2, the transmittance of the first region AA is greater than that of the second region BB, the first region AA includes a third sub-region AA1, and the width of the third sub-region AA1 along the first direction X is greater than the width of the third sub-region AA1 along the second direction Y.

[0060] Specifically, as shown in Figure 2, the transmittance of the first region AA is greater than that of the second region BB. The first region AA can be a transparent display area. A first opening 110 with a larger depth and / or width blocks the mutual interference of light between two adjacent first sub-regions BB1 along the second direction Y. A second opening 120 with a smaller depth and / or width blocks the mutual interference of light between two adjacent first sub-regions BB1 along the first direction X. At this time, the width of the third sub-region AA1 formed by the first opening 110 and the second opening 120 along the first direction X is greater than the width along the second direction Y, forming a shape similar to a "rectangle". It is said that the volume of light-shielding material filled in the first opening 110 located on both sides of the first region AA along the second direction Y is relatively large. Due to process reasons, the first opening 110 with a larger depth and / or width will extend outward by a larger distance after being filled with light-shielding material. Therefore, compared with the second opening 120 with a smaller depth and / or width, the light-shielding material of the first opening 110 will occupy a larger space in the first region AA along the second direction Y, thereby making the width of the third sub-region AA1 along the first direction X greater than the width of the third sub-region AA1 along the second direction Y, which is equivalent to increasing the transmittance area of ​​the first region AA along the first direction X. Furthermore, since there is a first area AA between two adjacent first sub-regions BB1 along the second direction Y, and a second sub-region BB2 between two adjacent first sub-regions BB1 along the first direction X, with the first area AA being a transparent display area and the second sub-region BB2 being a wiring area, the distance between two adjacent first openings 110 along the second direction Y is relatively large, making it difficult to block light. Conversely, the distance between two adjacent second openings 120 along the first direction X is relatively small, making it easier to block light. Therefore, by setting the depth and / or width of the first opening 110 to be greater than the depth and / or width of the second opening 120, the mutual interference of light between adjacent first sub-regions BB1 in each direction can be better blocked.

[0061] Optionally, Figure 18 is a schematic diagram of another display panel structure provided by an embodiment of the present invention. Referring to Figure 18, the second opening 120 includes a first opening portion 120a and a second opening portion 120b. Along the first direction X, the first opening portion 120a overlaps with the first sub-region BB1, and the second opening portion 120b overlaps with the first region AA. Along the thickness direction of the display panel, the opening depths of the first opening portion 120a and the second opening portion 120b are the same.

[0062] As shown in Figure 18, the second opening 120 includes a first opening portion 120a and a second opening portion 120b that are alternately arranged along the second direction Y. Along the first direction X, the first opening portion 120a overlaps with the first sub-region BB1, and the second opening portion 120b overlaps with the first region AA. The first sub-region BB1 can be a light-emitting element setting area, and the first region AA can be a transparent display area. Furthermore, the opening depths of the first opening portion 120a and the second opening portion 120b can be set to be the same along the thickness direction of the display panel. When the depth H1 of the first opening 110 is greater than the depth H2 of the second opening 120, the depths of the first opening 110 and the second opening 120 are different. By setting the depths of the first opening portion 120a and the second opening portion 120b to be the same, the first opening portion 120a and the second opening portion 120b can be formed using the same mask in the same manufacturing process, eliminating the need to make separate masks for the first opening portion 120a and the second opening portion 120b, thus saving costs, reducing the number of processes, and improving production efficiency. When the depth H1 of the first opening 110 is the same as the depth H2 of the second opening 120, by setting the depths of the first opening portion 120a, the second opening portion 120b, and the first opening 110 to be the same, the first opening portion 120a, the second opening portion 120b, and the first opening 110 can be formed in the same manufacturing process using the same mask. This eliminates the need to make separate masks for the first opening portion 120a, the second opening portion 120b, and the first opening 110, saving costs, reducing the number of processes, and improving production efficiency.

[0063] Optionally, Figure 19 is a schematic diagram of another display panel structure provided in an embodiment of the present invention. Referring to Figure 19, the second opening 120 includes a first opening portion 120a and a second opening portion 120b. Along the first direction X, the first opening portion 120a overlaps with the first sub-region BB1, and the second opening portion 120b overlaps with the first region AA. Along the thickness direction of the display panel, the opening depth of the first opening portion 120a is greater than the opening depth of the second opening portion 120b.

[0064] Specifically, as shown in Figure 19, the second opening 120 includes a first opening portion 120a and a second opening portion 120b alternately arranged along the second direction Y. Along the first direction X, the first opening portion 120a overlaps with the first sub-region BB1, and the second opening portion 120b overlaps with the first region AA. The first sub-region BB1 can be a light-emitting element area, and the first region AA can be a transparent display area. Therefore, along the thickness direction of the display panel, the opening depth of the first opening portion 120a is greater than the opening depth of the second opening portion 120b. That is, corresponding to the position of the first sub-region BB1, the deeper first opening portion 120a is needed to block the mutual interference of light between adjacent first sub-regions BB1, more effectively blocking crosstalk between two adjacent first sub-regions BB1 along the first direction X. The shallower second opening portion 120b can increase the transmittance area of ​​the first region AA along the first direction X, thereby improving the transmittance of the display panel.

[0065] It should be noted that Figure 19 only illustrates, by way of example, that the opening depth of the first opening portion 120a is greater than the opening depth of the second opening portion 120b. In other embodiments, the opening width of the first opening portion 120a may be greater than the width of the second opening portion 120b, or the opening depth of the first opening portion 120a may be greater than the opening depth of the second opening portion 120b, and the opening width of the first opening portion 120a may be greater than the opening width of the second opening portion 120b. Those skilled in the art can set these parameters as needed.

[0066] Optionally, Figure 20 is a simplified cross-sectional view of another structure along the C-C' direction in Figure 2. Referring to Figure 20, the display panel also includes a substrate 50 and a multilayer insulating layer 60 located on one side of the substrate 50. The multilayer insulating layer 60 includes a planarization layer 61 and an inorganic insulating layer 62 located on the side of the planarization layer 61 near the substrate 50. The first opening 110 penetrates the planarization layer 61 and the inorganic insulating layer 62. The material of the planarization layer 61 includes organosiloxane.

[0067] Specifically, in existing technologies, the planarization layer is typically made of organic materials, while the inorganic insulating layer is typically made of inorganic materials. Therefore, during the etching process to form the opening, different processes are required to etch the planarization layer and the inorganic insulating layer separately. To address this, this embodiment of the invention uses an organosiloxane as the material for the planarization layer 61. Based on the characteristic that organosiloxanes form an inorganic film similar to SiO2 after curing, the planarization layer 61 is made of inorganic material, thus enabling integrated etching during the formation of the first opening 110 and improving production efficiency.

[0068] Referring again to Figure 20, the multilayer insulating layer 60 also includes a passivation layer 63 located on the side of the first opening 110 away from the substrate 50. The material of the passivation layer 63 includes an organosiloxane. Specifically, as shown in Figure 20, the multilayer insulating layer 60 also includes a passivation layer 63 located on the side of the first opening 110 away from the substrate 50. The first opening 110 penetrates the planarization layer 61, and the passivation layer 63 is located above the first opening 110. This can also be understood as the passivation layer 63 being located above the light-shielding material filling the first opening 110. By setting the material of the passivation layer 63 to an organosiloxane, the risk of contamination of the chamber caused by the entry of organic materials during the CVD process to prepare the passivation layer 63 on the light-shielding material is prevented.

[0069] Optionally, referring to Figure 3, the light-emitting element 20 is an inorganic light-emitting diode (LED). Specifically, the inorganic LED can be Micro-LED, Mini-LED, etc. Micro-LED refers to a display technology that uses self-emissive, micrometer-sized LEDs as light-emitting pixel units, assembled onto a driving panel to form a high-density LED array. It has advantages such as self-emission, high efficiency, low power consumption, high integration, high stability, and all-weather operation. Mini-LED allows for local dimming design, achieving a high dynamic range screen effect and making the image more delicate. Therefore, by setting the light-emitting element 20 to an inorganic LED, the display effect of the display panel can be improved.

[0070] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 21 is a schematic structural diagram of a display device provided in an embodiment of the present invention. As shown in Figure 21, the display device includes the display panel 10 in the above embodiments. This display device includes the display panel 10 of any embodiment of the present invention; therefore, the display device provided in the embodiments of the present invention possesses the corresponding beneficial effects of the display panel 10 provided in the embodiments of the present invention, which will not be elaborated here. For example, the display device can be electronic paper, digital paper, etc., and the embodiments of the present invention do not limit it.

[0071] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes a first region and a second region; the second region at least partially surrounds the first region; the first region is a transparent display area, and the second region is a non-transparent display area; the display panel includes an opening filled with a light-shielding material; the second region includes a first sub-region and a second sub-region, the first sub-region including a light-emitting element, the opening between the first sub-region and the first region being a first opening, the first opening extending along a first direction, the width of the first opening perpendicular to the first direction being D1, and the depth along the thickness direction of the display panel being H1; the opening located in the second sub-region includes a second opening, the second opening extending along a second direction, the width of the second opening perpendicular to the second direction being D2, and the depth along the thickness direction of the display panel being H2; wherein, D1 > D2; and / or, H1 > H2; the first sub-region The first sub-region is a light-emitting element setting area, and the second sub-region is a wiring setting area. A portion of the metal wiring controlling the light emission of the light-emitting element is provided within the second sub-region. The first direction intersects the second direction, and both the first and second directions are parallel to the plane of the display panel. The second opening includes a first opening portion and a second opening portion. Along the first direction, the first opening portion overlaps with the first sub-region, and the second opening portion overlaps with the first region. Along the thickness direction of the display panel, the opening depths of the first opening portion and the second opening portion are the same; or, along the first direction, the first opening portion overlaps with the light-emitting element setting area, and the second opening portion does not overlap with the light-emitting element setting area. Along the thickness direction of the display panel, the opening depth of the first opening portion is greater than the opening depth of the second opening portion.

2. The display panel according to claim 1, characterized in that, The first sub-region includes a thin-film transistor, and the first opening at least partially overlaps with the thin-film transistor in a direction from the first region to the first sub-region.

3. The display panel according to claim 1, characterized in that, The first sub-region includes a thin-film transistor, the thin-film transistor including a first side and a second side opposite to each other in the second direction, the second region including at least two first sub-regions, and the first side of at least two first sub-regions including the first opening.

4. The display panel according to claim 1, characterized in that, The second sub-region includes a substrate and a signal line located on one side of the substrate. In the direction from the first region to the second sub-region, the second opening at least partially overlaps with the signal line.

5. The display panel according to claim 4, characterized in that, The signal line includes a first signal transmission trace and a second signal transmission trace disposed in different layers. The first signal transmission trace is located on the side of the second signal transmission trace closer to the substrate. The second opening includes a bottom surface and a top surface. The bottom surface of the opening is located on the side of the first signal transmission trace closer to the substrate. The top surface of the opening is located on the side of the second signal transmission trace away from the first signal transmission trace.

6. The display panel according to claim 1, characterized in that, The second sub-region includes a signal line, the signal line including a third side and a fourth side opposite to each other in the first direction, the second region including at least two second sub-regions, and the third side of each of the at least two second sub-regions including the second opening.

7. The display panel according to claim 1, characterized in that, The transmittance of the first region is greater than that of the second region; the first region includes a third sub-region, and the width of the third sub-region along the first direction is greater than the width of the third sub-region along the second direction.

8. The display panel according to claim 1, characterized in that, The display panel further includes a substrate and a multilayer insulating layer located on one side of the substrate. The multilayer insulating layer includes a planarization layer and an inorganic insulating layer located on the side of the planarization layer closer to the substrate. The first opening penetrates the planarization layer and the inorganic insulating layer. The material of the planarization layer includes an organosiloxane.

9. The display panel according to claim 8, characterized in that, The multilayer insulating layer further includes a passivation layer located on the side of the first opening away from the substrate; the material of the passivation layer includes organosiloxane.

10. The display panel according to claim 1, characterized in that, The light-emitting element is an inorganic light-emitting diode.

11. A display device, characterized in that, Includes the display panel as described in any one of claims 1-10.

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