A display panel and a display device

Abstract

The present invention discloses a display panel and a display device. The display panel includes: a substrate; a light-emitting element; a first optical adjustment structure including a first opening, and the projection of the light-emitting element on the first optical adjustment structure is located within the first opening; a second optical adjustment structure located on a side of the first optical adjustment structure away from the substrate, the second optical adjustment structure covering the first optical adjustment structure, and the refractive index of the second optical adjustment structure being greater than that of the first optical adjustment structure; the first optical adjustment structure includes a first sidewall surrounding the first opening; within a plane perpendicular to the plane where the substrate is located, the angle between the first sidewall and the substrate includes at least a first angle θ1 and a second angle θ2, and one of θ1 and θ2 is greater than the other. By arranging the first sidewall of the first light adjustment structure at multiple angles, the emitted light at different angles is adjusted, thereby improving the light extraction efficiency of the display panel and ensuring the display effect of the display panel.

Description

Technical Field

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

[0002] With the development of display technologies, organic light emitting diode (OLED) display panels have been widely used in the fields of display, lighting, and intelligent wearables, etc., due to their good self-luminous characteristics, high contrast ratio, fast response, and other advantages. However, since some large-angle light rays of the organic light emitting diode display panel will undergo total internal reflection between the film layers and thus cannot exit, the light extraction efficiency of the display panel is seriously affected. Summary of the Invention

[0003] The present invention provides a display panel and a display device to improve the light extraction efficiency of the display panel.

[0004] In a first aspect, the present invention provides a display panel, comprising:

[0005] a substrate;

[0006] a light-emitting element located on one side of the substrate;

[0007] a first optical adjustment structure located on the side of the light-emitting element away from the substrate, comprising a first opening, and in a direction perpendicular to the plane of the substrate, the projection of the light-emitting element on the first optical adjustment structure is located within the first opening;

[0008] a second optical adjustment structure located on the side of the first optical adjustment structure away from the substrate, and in a direction perpendicular to the plane of the substrate, the second optical adjustment structure covers the first optical adjustment structure, and the refractive index of the second optical adjustment structure is greater than that of the first optical adjustment structure;

[0009] The first optical adjustment structure includes a first sidewall surrounding the first opening;

[0010] In a plane perpendicular to the plane of the substrate, the angle between the first sidewall and the substrate includes at least a first angle θ1 and a second angle θ2, and one of θ1 and θ2 is greater than the other.

[0011] In a second aspect, the present invention provides a display device, comprising the display panel according to any one of the first aspect.

[0012] The technical solution of the embodiment of the present invention provides a display panel, which includes: a substrate; a light-emitting element located on one side of the substrate; a first optical adjustment structure located on the side of the light-emitting element away from the substrate, including a first opening, and in the direction perpendicular to the plane where the substrate is located, the projection of the light-emitting element on the first optical adjustment structure is located within the first opening; a second optical adjustment structure located on the side of the first optical adjustment structure away from the substrate, and in the direction perpendicular to the plane where the substrate is located, the second optical adjustment structure covers the first optical adjustment structure, and the refractive index of the second optical adjustment structure is greater than that of the first optical adjustment structure; the first optical adjustment structure includes a first sidewall surrounding the first opening; in the plane perpendicular to the plane where the substrate is located, the angle between the first sidewall and the substrate includes at least a first angle θ1 and a second angle θ2, and one of θ1 and θ2 is greater than the other. By setting the first sidewall of the first light adjustment structure at multiple angles, the outgoing light at different angles can be adjusted, so as to improve the light extraction efficiency of the display panel and ensure the display effect of the display panel.

[0013] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0016] Figure 2 It is a schematic structural diagram of a part of the first sidewall provided by an embodiment of the present invention;

[0017] Figure 3 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0018] Figure 4 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0019] Figure 5 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0020] Figure 6 For Figure 5Schematic cross-sectional structure diagram of the display panel along the section line AA';

[0021] Figure 7 is Figure 5 Schematic cross-sectional structure diagram of the display panel in along the section line BB';

[0022] Figure 8 is is Figure 5 Another schematic cross-sectional structure diagram of the display panel in along the section line AA';

[0023] Figure 9 is Figure 5 Another schematic cross-sectional structure diagram along the section line BB' in ;

[0024] Figure 10 Schematic cross-sectional structure diagram of a display panel along the section line AA' provided by an embodiment of the present invention;

[0025] Figure 11 Schematic structure diagram of another display panel provided by an embodiment of the present invention;

[0026] Figure 12 is Figure 11 Schematic cross-sectional structure diagram of the display panel in along the section line CC'

[0027] Figure 13 is Figure 11 Schematic cross-sectional structure diagram of the display panel in along the section line DD';

[0028] Figure 14 Schematic structure diagram of a third optical adjustment structure provided by an embodiment of the present invention;

[0029] Figure 15 Schematic structure diagram of another third optical adjustment structure provided by an embodiment of the present invention;

[0030] Figure 16 Schematic structure diagram of another third optical adjustment structure provided by an embodiment of the present invention;

[0031] Figure 17 Schematic structure diagram of another third optical adjustment structure provided by an embodiment of the present invention;

[0032] Figure 18 Schematic structure diagram of another display panel provided by an embodiment of the present invention;

[0033] Figure 19 Schematic structure diagram of another third optical adjustment structure provided by an embodiment of the present invention;

[0034] Figure 20 Schematic structure diagram of another display panel provided by an embodiment of the present invention;

[0035] Figure 21 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0036] Figure 22 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0037] Figure 23 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0038] Figure 24 It is a schematic structural diagram of a display device provided by an embodiment of the present invention. Detailed implementation manners

[0039] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily need to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0041] Figure 1 It is a schematic structural diagram of a display panel provided by an embodiment of the present invention, as Figure 1As shown, the display panel 100 includes: a substrate substrate 101; a light-emitting element 102 located on one side of the substrate substrate 101; a first optical adjustment structure 103 located on the side of the light-emitting element 102 away from the substrate substrate 101, including a first opening 104, and in the direction perpendicular to the plane where the substrate substrate 101 is located (such as the X direction in the figure), the projection of the light-emitting element 102 on the first optical adjustment structure 103 is located within the first opening 104; a second optical adjustment structure 105 located on the side of the first optical adjustment structure 103 away from the substrate substrate 101, and in the X direction perpendicular to the plane where the substrate substrate 101 is located, the second optical adjustment structure 105 covers the first optical adjustment structure 103, and the refractive index of the second optical adjustment structure 105 is greater than the refractive index of the first optical adjustment structure 103; the first optical adjustment structure 103 includes a first sidewall 106 surrounding the first opening 104; within the plane perpendicular to the plane where the substrate substrate 101 is located, the angle between the first sidewall 106 and the substrate substrate 101 includes at least a first angle θ1 and a second angle θ2, and one of θ1 and θ2 is greater than the other.

[0042] Among them, the substrate 101 can be a rigid substrate or a flexible substrate, and the specific type of the substrate can be selected according to actual design requirements, which is not specifically limited in the embodiments of the present invention. The light-emitting element 102 can include a plurality of light-emitting elements 102 that emit light of different colors. For example, it can be a red light-emitting element, a green light-emitting element, and a blue light-emitting element. The type of the light-emitting element 102 can be an organic light-emitting element, a quantum dot light-emitting diode, and a micro light-emitting diode. The first optical adjustment structure 103 is located on the light-emitting side of the light-emitting element 102, and the second optical adjustment structure 105 is located on the side of the first optical adjustment structure 103 away from the substrate 101, and the second optical adjustment structure 105 covers the first optical adjustment structure 103. The refractive index of the second optical adjustment structure 105 is greater than that of the first optical adjustment structure 103, so that the light emitted by the light-emitting element 102 can be deflected at the interface between the first optical adjustment structure 103 and the second optical adjustment structure 105, thereby affecting the light-emitting angle of the emitted light. At the same time, the first optical adjustment structure 103 includes a first opening 104, and the first opening 104 exposes the light-emitting element 102 to avoid affecting the vertical emitted light of the light-emitting element 102. The large-angle light is adjusted by the first optical adjustment structure 103 and the second optical adjustment structure 105, thereby improving the light-emitting efficiency of the light-emitting element 102. Since the light emitted by the light-emitting element 102 has different emission angles, when the light of different emission angles passes through the first optical adjustment structure 103 and the second optical adjustment structure 105 under the traditional design, there are also large angular differences in the angles of the emitted light, and it is difficult to improve the light-emitting efficiency uniformity of the display panel 100. Therefore, the sidewall angles of the first optical adjustment structure 103 are differentially set. The first optical adjustment structure 103 includes a first sidewall 106 surrounding the first opening 104, so that the light emitted through the first opening 104 can be emitted after being adjusted by the first sidewall 106. To ensure that a hybrid design of multi-angle light emitted by the light-emitting element 102 can be achieved, different sidewall angles existing in the first sidewall 106 can be controlled to adjust the light of different angles, thereby improving the light-emitting efficiency. That is, in the plane perpendicular to the plane where the substrate 101 is located, the angle between the first sidewall 106 and the substrate 101 includes at least a first angle θ1 and a second angle θ2, and one of θ1 and θ2 is greater than the other, the first angle θ1 is greater than the second angle θ2 or the first angle θ1 is less than the second angle θ2. The angular ranges of the first angle θ1 and the second angle θ2 are between 10° and 50°, ensuring that the emitted light is emitted at as small an angle as possible to ensure the light-emitting efficiency. Figure 2 It is a schematic structural diagram of a part of the first sidewall provided by an embodiment of the present invention, as Figure 1 and 2As shown, during the preparation of the first side wall 106, affected by the preparation process, the first side wall 106 generally includes a first arc edge 1061 away from the base substrate 101, a second arc edge 1062 close to the base substrate 101, and a third straight edge 1063 connecting the first arc edge 1061 and the second arc edge 1062 in a plane perpendicular to the base substrate 101. The angle between the first side wall 106 and the base substrate 101 is generally defined by the angle between the third straight edge and the base substrate 101. In subsequent figures, the first side wall 106 is exemplarily drawn as a straight line for ease of understanding. Figure 3 A schematic structural diagram of another display panel provided by an embodiment of the present invention, Figure 4 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 3 and Figure 4 As shown, the first side wall 106 is displayed as a straight line, and the first angle θ1 and the second angle θ2 of different angles can be located on the same side. The first angle θ1 and the second angle θ2 of different angles can be located on the same side or on different sides, and can be set according to actual needs. The same first side wall 106 can include side wall angles of multiple angles, and the multi-angle mixed design further enhances the light effect and improves the light extraction efficiency. The display panel 100 also includes an encapsulation layer 11 located on the side of the light-emitting element 102 away from the base substrate 101. The encapsulation layer 11 is generally a three-layer structure of inorganic layer-organic layer-inorganic layer to achieve encapsulation protection for the light-emitting element 102. The display panel 100 may also include a touch layer 12 located on the side of the encapsulation layer 11 away from the base substrate 101, thereby meeting the touch function requirements of the display panel 100. According to the film structure of the display panel 100, such as Figure 3 As shown, the first optical adjustment structure 103 and the second optical adjustment structure 105 can be located on the side of the touch layer 12 away from the packaging layer 11; or Figure 4 As shown, the first optical adjustment structure 103 and the second optical adjustment structure 105 can be located between the packaging layer 11 and the touch layer 12. The specific setting positions of the first optical adjustment structure 103 and the second optical adjustment structure 105 can be selected according to actual design requirements, and the embodiment of the present invention does not make specific limitations.

[0043] In an embodiment of the present invention, the display panel is provided with a first optical adjustment structure and a second optical adjustment structure. In a direction perpendicular to the plane of the substrate, the second optical adjustment structure covers the first optical adjustment structure, and the refractive index of the second optical adjustment structure is greater than that of the first optical adjustment structure. The first optical adjustment structure includes a first sidewall surrounding a first opening. In a plane perpendicular to the plane of the substrate, the angle between the first sidewall and the substrate includes at least a first angle θ1 and a second angle θ2, and one of θ1 and θ2 is greater than the other. By setting the first sidewall of the first light adjustment structure at multiple angles, the emitted light at different angles can be adjusted, thereby improving the light extraction efficiency of the display panel and ensuring the display effect of the display panel.

[0044] Optionally, Figure 5 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. Figure 6 is Figure 5 a schematic cross-sectional structure diagram of the display panel in Figure 7 along the section line AA'. Figure 5 is Figure 8 a schematic cross-sectional structure diagram of the display panel formed by the section line BB' in Figure 5 is Figure 9 another schematic cross-sectional structure diagram of the display panel in Figure 5 along the section line AA'; Figure 5 is Figure 6 another schematic cross-sectional structure diagram along the section line BB' in Figure 7 such as Figure 8 and Figure 9 shown, the first sidewall 106 includes a first sub-sidewall 107. In the first plane (i.e., the cross-sectional plane formed by the section line AA'), the angle between the first sub-sidewall 107 and the substrate 101 is the first angle θ1. In the second plane (i.e., the cross-sectional plane formed by the section line BB'), the angle between the first sub-sidewall 107 and the substrate 101 is the second angle θ2. The first plane is parallel to the second plane and both are perpendicular to the plane of the substrate 101.

[0045] Among them, the first side wall 106 of the first optical adjustment structure 103 includes a continuously arranged first sub-side wall 107, and the angles at different positions in the first sub-side wall 107 are different. When the first included angle θ1 and the second included angle θ2 are on the same side, the plane perpendicular to the substrate 101 in the display panel 100 may include a first plane corresponding to the first included angle θ1, that is, the cross-section formed by the section line AA', and a second plane corresponding to the second included angle θ2, that is, the cross-section formed by the section line BB'. The first plane and the second plane are parallel to each other, so that for the same side of the first sub-side wall 107, the first included angle θ1 and the second included angle θ2 are arranged in different planes, and the angles of the first included angle θ1 and the second included angle θ2 are different, ensuring that the first sub-side wall 107 adjusts the light rays with different emission angles of the light-emitting element 102, so as to improve the light extraction efficiency of the display panel 100 and ensure the display effect of the display panel 100. Exemplarily, as Figure 6 and Figure 7 shown, the edges of the first sub-side wall 107 away from the substrate 101 and the edges close to the substrate 101 in the first plane and the second plane may not overlap, that is, in the first plane, the distance D1 between the edges of the first sub-side wall 107 away from the substrate 101 is not equal to the distance D2 between the edges of the first sub-side wall 107 away from the substrate 101 in the second plane, and in the first plane, the distance D3 between the edges of the first sub-side wall 107 close to the substrate 101 is not equal to the distance D4 between the edges of the first sub-side wall 107 close to the substrate 101 in the second plane; or, as Figure 8 and 9 shown, the edges of the first sub-side wall 107 away from the substrate 101 in the first plane and the second plane may overlap, and the edges of the first sub-side wall 107 close to the substrate 101 may not overlap, that is, in the first plane, the distance D1 between the edges of the first sub-side wall 107 away from the substrate 101 is equal to the distance D2 between the edges of the first sub-side wall 107 away from the substrate 101 in the second plane, and in the first plane, the distance D3 between the edges of the first sub-side wall 107 close to the substrate 101 is not equal to the distance D4 between the edges of the first sub-side wall 107 close to the substrate 101 in the second plane; the above methods can all realize that different angles are set on the first sub-side wall 107 to realize the adjustment of the light rays with different emission angles, so as to improve the light extraction efficiency.

[0046] Optionally, Figure 10 is a schematic cross-sectional structure diagram of a display panel along the section line AA' provided by an embodiment of the present invention. As Figure 1 and Figure 10As shown, the first sidewall 106 includes a first sub - sidewall 107 and a second sub - sidewall 108. In the first plane, the angle between the first sub - sidewall 107 and the substrate 101 is the first angle θ1, and the angle between the second sub - sidewall 108 and the substrate 101 is the second angle θ2. The first plane is perpendicular to the plane where the substrate 101 is located.

[0047] Among them, the first sidewall 106 of the first optical adjustment structure 103 may include a first sub - sidewall 107 and a second sub - sidewall 108 arranged at intervals. Exemplarily, the first sub - sidewall 107 and the second sub - sidewall 108 are arranged opposite to each other, so that in the same first plane, the first angle θ1 between the first sub - sidewall 107 and the substrate 101 is different from the second angle θ2 between the second sub - sidewall 108 and the substrate 101. Furthermore, there are different - angle included angles on the corresponding first sidewall 106 to adjust the light rays with different emission angles of the light - emitting element 102, effectively improving the light - emitting efficiency and ensuring the display effect of the display panel 100.

[0048] Optionally, Figure 11 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. Figure 12 is Figure 11 a schematic cross - sectional structure diagram of the display panel along the section line CC'. Figure 13 is Figure 9 a schematic cross - sectional structure diagram of the display panel along the section line DD'. As Figure 11 、 Figure 12 and Figure 13 shown, the display panel 100 further includes a third optical adjustment structure 109 arranged on the same layer as the first optical adjustment structure 103. In the direction X perpendicular to the plane where the substrate 101 is located, the projection of the third optical adjustment structure 109 is located within the first opening 104; in the plane perpendicular to the plane where the substrate 101 is located, the first angle θ1 corresponds to the first truncated edge 110 of the first sidewall 106, and the second angle θ2 corresponds to the second truncated edge 111 of the first sidewall 106. The minimum distance between the first truncated edge 110 and the third optical adjustment structure 109 is the first distance d1, and the minimum distance between the second truncated edge 111 and the third optical adjustment structure 109 is the second distance d2; among them, d1 > d2 and θ1 > θ2.

[0049] The inventors' research found that the light extraction effect of setting the angle between the first sidewall 106 of the first optical adjustment structure 103 and the substrate 101 to a small angle is better than that of setting the angle between the first sidewall 106 of the first optical adjustment structure 103 and the substrate 101 to a large angle. However, due to the limitations of the manufacturing process and material selection of the first optical adjustment structure 103, it is difficult to set the first sidewall 106 of the first optical adjustment structure 103 to a small angle to improve the light extraction efficiency and display effect; or to set the first sidewall 106 of the first optical adjustment structure 103 to have different angles to adjust the emitted light rays of the light-emitting element 102 at different angles. The implementation of the above structures has technical difficulties. The inventors further found that by appropriately adjusting the mask size in the design of the mask, the angle between the first sidewall 106 of the first optical adjustment structure 103 and the substrate 101 can be affected. Within a certain range, the larger the mask size, the larger the inclination angle of the formed sidewall; the smaller the mask size, the smaller the inclination angle of the formed sidewall. Therefore, a third optical adjustment structure 109 is introduced, which is arranged on the same layer as the first optical adjustment structure 103. The shape and the number of the third optical adjustment structures 109 can be selected according to actual needs. The material of the third optical adjustment structure 109 can be the same as that of the first optical adjustment structure 103, or can be prepared on the same layer as the first optical adjustment structure 103 to simplify the process flow. The materials of the first optical adjustment structure 103 and the third optical adjustment structure 109 are usually transparent organic materials. In the figure, the first optical adjustment structure 103 and the third optical adjustment structure 109 are shown as having the same material and being fabricated on the same layer. In the direction perpendicular to the plane of the substrate 101, the projection of the third optical adjustment structure 109 is located within the first opening 104. Since the third optical adjustment structure 109 is in a transparent state, the presence of the third optical adjustment structure 109 has little effect on the emitted light rays of the light-emitting element 102 in the vertical direction. At the same time, by means of the setting of the third optical adjustment structure 109, the distance relationship between the first optical adjustment structure 103 and the third optical adjustment structure 109 is reasonably controlled, thereby affecting the inclination angle of the first sidewall 106 of the first optical adjustment structure 103 to achieve multi-angle setting of the first optical adjustment structure 103. In the actual manufacturing process of the first sidewall 106 of the first optical adjustment structure 103, both the side of the first sidewall 106 away from the substrate 101 and the side close to the substrate 101 are arc edges, and the first sidewall 106 between the two arc edges is a straight edge. By reasonably controlling the mask size, the extension length of the arc edge of the first sidewall 106 close to the substrate 101 is reduced to ensure the inclination angle of the first sidewall, thereby realizing the adjustment of large-angle light rays and ensuring the vertical light-emitting effect.Exemplarily shown in the figure is a straight line along the first sidewall 101. In a plane perpendicular to the plane where the substrate 101 is located, there is a first truncated edge 110 in the first sidewall 106 of the first optical adjustment structure 103. The first truncated edge 110 is a straight edge in the first sidewall 106, and a first included angle θ1 is formed between the first truncated edge 110 and the substrate 101; there is a second truncated edge 111 in the first sidewall 106 of the first optical adjustment structure 103. The second truncated edge 111 is a straight edge in the first sidewall 106, and a second included angle θ2 is formed between the second truncated edge 111 and the substrate 101. The minimum distance between the first truncated edge 110 and the third optical adjustment structure 109, that is, the distance between the side of the first truncated edge 110 close to the substrate 101 and the side of the third optical adjustment structure 109 close to the substrate 101 is the first distance d1; the minimum distance between the second truncated edge 111 and the third optical adjustment structure 109, that is, the distance between the side of the second truncated edge 111 close to the substrate 101 and the side of the third optical adjustment structure 109 close to the substrate 101 is the second distance d2. In the manufacturing process, the smaller the minimum distance between the truncated edge and the third optical adjustment structure 109, the smaller the included angle formed between the corresponding truncated edge and the substrate 101; the larger the minimum distance between the truncated edge and the third optical adjustment structure 109, the larger the included angle formed between the corresponding truncated edge and the substrate 101. Therefore, the first distance d1 between the first truncated edge 110 and the third optical adjustment structure 109 is set to be greater than the second distance d2 between the second truncated edge 111 and the third optical adjustment structure 109, so that the first included angle θ1 between the first truncated edge 110 and the substrate 101 is greater than the second included angle θ2 between the second truncated edge 111 and the substrate 101. By reasonably setting the distance between the truncated edge of the first optical adjustment structure 109 and the third optical adjustment structure 109, the topography of the large-angle inclination angle of the original first sidewall can be adjusted to form a small-angle inclination angle. At the same time, by correspondingly setting different distances between the truncated edges of the first optical adjustment structure 109 and the third optical adjustment structure 109, a multi-angle hybrid design on the first sidewall 106 is realized, meeting the adjustment of different large-angle outgoing light rays of the light-emitting element 102, further improving the light extraction efficiency, and ensuring the display effect of the display panel 100.

[0050] Optionally, Figure 14 is a schematic structural diagram of a third optical adjustment structure provided by an embodiment of the present invention. Figure 15 is another schematic structural diagram of a third optical adjustment structure provided by an embodiment of the present invention, as Figure 14 and Figure 15As shown, within the plane perpendicular to the substrate 101, the included angle between the first sidewall 106 and the substrate 101 includes a third included angle θ3. The third included angle θ3 corresponds to the third truncated edge of the first sidewall 106. The minimum distance between the third truncated edge and the third optical adjustment structure 109 is the third distance d3, where d2 > d3 and θ2 > θ3; among them, (θ1 - θ2) / (d1 - d2) = (θ2 - θ3) / (d2 - d3).

[0051] Among them, a multi-angle hybrid design is carried out on the first sidewall 106. This design needs to be realized with the help of the third optical adjustment structure 109. The minimum distance between the third optical adjustment structure 109 and each truncated edge on the first sidewall 106 can be reasonably set, thereby adjusting the included angle between the first sidewall 106 of the first optical adjustment structure 103 and the substrate 101. On the same side, the minimum distance between the third optical adjustment structure 109 and the truncated edge on the first sidewall 106 is set with a linear gradient. Along the same direction, the minimum distance between the third optical adjustment structure 109 and the truncated edge on the first sidewall 106 can gradually increase, so that the included angle between the truncated edge on the first sidewall 106 in the first optical adjustment structure 103 and the substrate 101 gradually increases; or the minimum distance between the third optical adjustment structure 109 and the truncated edge on the first sidewall 106 can gradually decrease, so that the included angle between the truncated edge on the first sidewall 106 in the first optical adjustment structure 103 and the substrate 101 gradually decreases. The shape of the orthographic projection of the third optical adjustment structure 109 on the substrate 101 can be as Figure 14 shown in a linearly convex polygon; or Figure 15 shown in a linearly concave polygon. Reasonably setting the gradient of the minimum distance between the third optical adjustment structure 109 and the truncated edge of the first sidewall 106 affects the gradient of the included angle between the first sidewall 106 in the first optical adjustment structure 103 and the substrate 101, thereby ensuring linear adjustment of the emitted light rays at different angles emitted by the light-emitting element 102 and ensuring the light extraction efficiency and display effect of the display panel 100.

[0052] Optionally, Figure 16 This is a schematic structural diagram of another third optical adjustment structure provided by an embodiment of the present invention, Figure 17 This is a schematic structural diagram of another third optical adjustment structure provided by an embodiment of the present invention, as Figure 16 and Figure 17As shown, within the plane perpendicular to the substrate 101, the angle between the first sidewall 106 and the substrate 101 includes a fourth angle θ4. The fourth angle θ4 corresponds to the fourth edge of the first sidewall 106. The minimum distance between the fourth edge and the third optical adjustment structure 109 is a fourth distance d4, where d2 > d4 and θ2 > θ4; among them, (θ1 - θ2) / (d1 - d2) < (θ2 - θ4) / (d2 - d4).

[0053] Among them, a multi-angle hybrid design is carried out on the first sidewall 106. This design needs to be realized with the help of the third optical adjustment structure 109. The minimum distance between the third optical adjustment structure 109 and each edge on the first sidewall 106 can be reasonably set, and then the angle between the first sidewall 106 of the first optical adjustment structure 103 and the substrate 101 can be adjusted. On the same side, the minimum distance between the third optical adjustment structure 109 and the edge on the first sidewall 106 is set to change non-linearly. Along the same direction, when the difference between the minimum distances between adjacent third optical adjustment structures 109 and the edges on the first sidewall 106 is small, the difference in the angles between the edges on the first sidewall 106 of adjacent first optical adjustment structures 103 and the substrate 101 changes greatly; or when the difference between the minimum distances between adjacent third optical adjustment structures 109 and the edges on the first sidewall 106 is large, the difference in the angles between the edges on the first sidewall 106 of the first optical adjustment structure 103 and the substrate 101 changes less. That is, for example, when the minimum distance between the third optical adjustment structure 109 and the edge on the first sidewall 106 is 1 μm, the corresponding angle between the edge on the first sidewall 106 of the first optical adjustment structure 103 and the substrate 101 is 10°; when the minimum distance between the third optical adjustment structure 109 and the edge on the first sidewall 106 is 2 μm, the corresponding angle between the edge on the first sidewall 106 of the first optical adjustment structure 103 and the substrate 101 is 40°; when the minimum distance between the third optical adjustment structure 109 and the edge on the first sidewall 106 is 3 μm, the corresponding angle between the edge on the first sidewall 106 of the first optical adjustment structure 103 and the substrate 101 is 50°. The shape of the orthographic projection of the third optical adjustment structure 109 on the substrate 101 can be a non-linearly convex polygon as shown in Figure 14 or a non-linearly concave polygon as shown in Figure 17 ; reasonably setting the non-linear change of the minimum distance between the third optical adjustment structure 109 and the edge of the first sidewall 106 affects the non-linear change of the angle between the first sidewall 106 of the first optical adjustment structure 103 and the substrate 101, and then ensures the non-linear adjustment of the emitted light rays at different angles emitted by the light-emitting element 102, and ensures the light-emitting efficiency and display effect of the display panel 100.

[0054] Optionally, continue to refer to Figure 12 and Figure 13 , the first distance d1 or the second distance d2 satisfies: 1.5 μm ≤ d1 ≤ 4 μm, 1.5 μm ≤ d2 ≤ 4 μm.

[0055] Wherein, in order to control the included angle between the first side wall 106 of the first optical adjustment structure 103 and the substrate 101 within a preset range, the preset range is 10° to 50°. To achieve different included angles between the first side wall 106 and the substrate 101, it is necessary to control the distance between the first optical adjustment structure 103 and the third optical adjustment structure 109, match the manufacturing process of the display panel 100, and then realize the multi-angle hybrid design of the first side wall 106 of the first optical adjustment structure 103, improve the light extraction efficiency, and ensure the display effect of the display panel 100.

[0056] Optionally, Figure 18 is a schematic structural diagram of another display panel provided by an embodiment of the present invention, Figure 19 is a schematic structural diagram of another third optical adjustment structure provided by an embodiment of the present invention. As shown in Figure 18 and Figure 19 , the display panel 100 further includes a third optical adjustment structure 109 disposed on the same layer as the first optical adjustment structure 103. In the direction perpendicular to the plane of the substrate 101, the projection of the third optical adjustment structure 109 is located within the first opening 104; the third optical adjustment structure 109 includes a second opening 114 and a third optical adjustment unit 115 surrounding the second opening 114.

[0057] Wherein, the third optical adjustment structure 109 is located on the light-emitting direction of the partial vertical light rays of the light-emitting element 102. By reasonably setting the shape of the third optical adjustment structure 109, in order to avoid the influence of the setting of the third optical adjustment structure 109 on the light extraction efficiency of the vertical light rays of the light-emitting element 102, a hollow design can be performed on the middle area of the third optical adjustment structure 109 to form the second opening 114, which is convenient for the direct emission of light rays and ensures the vertical light extraction efficiency of the light-emitting element 102. At the same time, the distance between the third optical adjustment unit 115 surrounding the second opening 114 of the third optical adjustment structure 109 and the first optical adjustment structure 103 is adjusted, thereby affecting the included angle between the first side wall 106 of the first optical adjustment structure 103 and the substrate 101, so as to realize the adjustment of the large-angle light rays emitted by the light-emitting element 102 and ensure the light extraction efficiency of the display panel 100.

[0058] Optionally, Figure 20 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. As shown in Figure 20As shown, the light-emitting element 102 at least includes a first light-emitting element 1021 and a second light-emitting element 1022. The wavelength of the light emitted by the first light-emitting element 1021 is greater than the wavelength of the light emitted by the second light-emitting element 1022. The second light-emitting element 1022 is a blue light-emitting element, and the first light-emitting element 1021 is a red light-emitting element or a green light-emitting element. The first opening 104 includes a first sub-opening 118 and a second sub-opening 119. The first light-emitting element 1021 corresponds to the first sub-opening 118, and the second light-emitting element 1022 corresponds to the second sub-opening 119. The display panel 100 further includes a third optical adjustment structure 109 disposed on the same layer as the first optical adjustment structure 103. In the direction X perpendicular to the plane of the substrate 101, the projection of the third optical adjustment structure 109 is located within the second sub-opening 119.

[0059] Among them, for the light-emitting elements 102 of different colors provided in the display panel 100, the light-emitting elements 102 may include red light-emitting elements, green light-emitting elements, and blue light-emitting elements. Due to the difference in light emission between different light-emitting elements, the wavelength of the light emitted by the first light-emitting element 1021 is greater than the wavelength of the light emitted by the second light-emitting element 1022. The second light-emitting element 1022 is a blue light-emitting element, and the first light-emitting element 1021 is a red light-emitting element or a green light-emitting element. It is found that the light-emitting efficiency of the blue light-emitting element is lower than that of the red light-emitting element or the green light-emitting element. Therefore, to ensure the uniformity of the light-emitting efficiency between different light-emitting elements 102, for the second light-emitting element 1022 with a lower light-emitting efficiency, by setting the third optical adjustment structure 109 in the light-emitting direction of the second light-emitting element 1022, the large-angle light is adjusted to make it emit as much as possible in the direction perpendicular to the light-emitting direction, thereby reducing the difference in light-emitting efficiency between the first light-emitting element 1021 and the second light-emitting element 1022. That is, the third optical adjustment structure 109 is disposed within the projection of the second sub-opening 119 corresponding to the second light-emitting element 1022. The third optical adjustment structure 109 and the first optical adjustment structure 103 can be disposed on the same layer and have the same material. The corresponding first light-emitting element 1021 may not be provided with the third optical adjustment structure 109, thereby realizing the adjustment of the light-emitting efficiency between the first light-emitting element 1021 and the second light-emitting element 1022 and ensuring the display effect of the display panel 100. Exemplarily, Figure 21 Another structural schematic diagram of the display panel provided by the embodiment of the present invention is shown in Figure 21As shown, a color display panel is provided with a first light-emitting element 1021, a second light-emitting element 1022, and a third light-emitting element 1023. The wavelength of the light emitted by the third light-emitting element 1023 is less than the wavelength of the light emitted by the first light-emitting element 1021, and the wavelength of the light emitted by the third light-emitting element 1023 is greater than the wavelength of the light emitted by the second light-emitting element 1022. The first light-emitting element 1021 is a red light-emitting element, the second light-emitting element 1022 is a blue light-emitting element, and the third light-emitting element 1023 is a green light-emitting element. When the light extraction efficiency of the blue light-emitting element is less than the light extraction efficiency of the green light-emitting element, and the light extraction efficiency of the green light-emitting element is less than the light extraction efficiency of the red light-emitting element, the first opening 104 further includes a third sub-opening 116 at this time. To improve the light extraction efficiency of the light emitted by the third light-emitting element 1023, the orthographic projection of the third optical adjustment structure 109 can also be set to fall within the third sub-opening 116. Then, by controlling the distance between the third optical adjustment structure 109 and the first optical adjustment structure 103, and simultaneously controlling the type of the distance between the third optical adjustment structure 109 corresponding to the third light-emitting element 1023 and its corresponding first optical adjustment structure 103 to be less than the type of the distance between the third optical adjustment structure 109 corresponding to the second light-emitting element 1022 and its corresponding first optical adjustment structure 103, the luminous efficiencies of the first light-emitting element 1021, the second light-emitting element 1022, and the third light-emitting element 1023 are similar or the same, ensuring the adjustment of the light extraction efficiencies of the second light-emitting element 1022 and the third light-emitting element 1023, and ensuring the display effect of the display panel.

[0060] Optionally, Figure 22 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. As Figure 22 shown, the light-emitting element 102 includes at least a first light-emitting element 1021 and a second light-emitting element 1022. The wavelength of the light emitted by the first light-emitting element 1021 is greater than the wavelength of the light emitted by the second light-emitting element 1022. The second light-emitting element is a blue light-emitting element, and the first light-emitting element is a red light-emitting element or a green light-emitting element; the first opening 104 includes a first sub-opening 118 and a second sub-opening 119. The first light-emitting element 1021 corresponds to the first sub-opening 118, and the second light-emitting element 1022 corresponds to the second sub-opening 119; the display panel 100 further includes a third optical adjustment structure 109 provided on the same layer as the first optical adjustment structure 103. In the direction X perpendicular to the plane where the substrate is located, the projection of the third optical adjustment structure 109 is located within the first opening 104; the third optical adjustment structure 109 includes a first optical adjustment sub-unit 120 located in the first sub-opening 118 and a second optical adjustment sub-unit 121 located in the second sub-opening 119; the second optical adjustment sub-unit 121 is an integral structure, and the first optical adjustment sub-unit 120 includes a second opening 114 and a third optical adjustment unit 115 surrounding the second opening 114.

[0061] Among them, for the light-emitting elements 102 of different colors provided in the display panel 100, due to the light-emitting differences between different light-emitting elements 102, when the wavelength of the emitted light of the first light-emitting element 1021 is greater than the wavelength of the emitted light of the second light-emitting element 1022, the second light-emitting element is a blue light-emitting element, and the first light-emitting element is a red light-emitting element or a green light-emitting element. However, the light-emitting efficiency of the blue light-emitting element is lower than that of the red light-emitting element or the green light-emitting element. Therefore, to ensure the uniformity of the light-emitting efficiency between different light-emitting elements 102, when the third optical adjustment structure 109 is provided in the light-emitting directions of the first light-emitting element 1021 and the second light-emitting element 1022, in the direction X perpendicular to the plane of the substrate 101, the second optical adjustment sub-unit 121 with a projection located in the first sub-opening 118 is correspondingly provided for the first light-emitting element 1021, and the first optical adjustment sub-unit 120 with a projection located in the second sub-opening 119 is correspondingly provided for the second light-emitting element 1022. Since both the first optical adjustment sub-unit 120 and the second optical adjustment sub-unit 121 can adjust the angles of large-angle light rays, and since both the first optical adjustment sub-unit 120 and the second optical adjustment sub-unit 121 are made of transparent organic materials, there is an impact on the light rays vertically emitted by the light-emitting element 102. To ensure that the light-emitting efficiencies between the first light-emitting element 1021 and the second light-emitting element 1022 are similar or the same, the second optical adjustment sub-unit 121 can be set as an integral structure to partially absorb the vertically emitted light rays. At the same time, a second opening 114 is provided on the first optical adjustment sub-unit 120. The second opening 114 can be provided in the central area of the first optical adjustment sub-unit 120 to avoid the loss of the vertically emitted light rays of the second light-emitting element 1022. The third optical adjustment unit 115 is provided around the second opening 114, which can ensure the adjustment of the large-angle light rays emitted by the second light-emitting element 1022, ensure the light-emitting efficiency of the second light-emitting element 1022, and further ensure the display effect of the display panel 100. Figure 23 The following is a schematic structural diagram of another display panel provided by an embodiment of the present invention, as Figure 23As shown, when the light-emitting element 102 includes a first light-emitting element 1021, a second light-emitting element 1022, and a third light-emitting element 1023, the first light-emitting element 1021 is a red light-emitting element, the third light-emitting element 1023 is a green light-emitting element, and the second light-emitting element 1022 is a blue light-emitting element. Exemplarily, the wavelength of the red light emitted by the red light-emitting element is greater than the wavelength of the green light emitted by the green light-emitting element, and the wavelength of the green light emitted by the green light-emitting element is greater than the wavelength of the blue light emitted by the blue light-emitting element. That is, when the light extraction efficiency of the red light-emitting element is greater than the light extraction efficiency of the green light-emitting element, and the light extraction efficiency of the green light-emitting element is greater than the light extraction efficiency of the blue light-emitting element, the third optical adjustment structure 109 is respectively provided corresponding to the red light-emitting element, the green light-emitting element, and the blue light-emitting element. Since the light extraction efficiency of the blue light-emitting element is lower than that of the red light-emitting element and the green light-emitting element, second openings 114 can be provided on the third optical adjustment structures 109 corresponding to the green light-emitting element and the blue light-emitting element, and the orthographic projection area of the second opening 114 corresponding to the green light-emitting element is smaller than the orthographic projection area of the second opening 114 corresponding to the blue light-emitting element, so that the vertical light output of the blue light-emitting element is greater than the vertical light output of the green light-emitting element, thereby ensuring the uniformity of the light-emitting efficiency among the red light-emitting element, the green light-emitting element, and the blue light-emitting element, and ensuring the display effect of the display panel 100.

[0062] Figure 24 The following is a schematic structural diagram of a display device provided by an embodiment of the present invention. As Figure 24 shown, the display device 200 includes the display panel 100 described in the above embodiment.

[0063] It should be noted that since the display device provided by this embodiment has the same or corresponding beneficial effects as the display panel 100 of the above embodiment, it will not be elaborated here. The display device 200 provided by the embodiment of the present invention can be Figure 24 the mobile phone shown in the figure, or any electronic product with a display function, including but not limited to the following categories: television sets, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control devices, touch interaction terminals, etc. The embodiment of the present invention does not make special limitations on this.

[0064] The above specific implementation manners do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A display panel, characterized in that, Comprising: A substrate; A light-emitting element located on one side of the substrate; A first optical adjustment structure located on the side of the light-emitting element away from the substrate, including a first opening, and in a direction perpendicular to the plane of the substrate, the projection of the light-emitting element on the first optical adjustment structure is located within the first opening; A second optical adjustment structure located on the side of the first optical adjustment structure away from the substrate, and in a direction perpendicular to the plane of the substrate, the second optical adjustment structure covers the first optical adjustment structure, and the refractive index of the second optical adjustment structure is greater than that of the first optical adjustment structure; The first optical adjustment structure includes a first sidewall surrounding the first opening; In a plane perpendicular to the plane of the substrate, the angle between the first sidewall and the substrate includes at least a first angle θ1 and a second angle θ2, and one of θ1 and θ2 is greater than the other; The display panel further includes a third optical adjustment structure disposed on the same layer as the first optical adjustment structure, and in a direction perpendicular to the plane of the substrate, the projection of the third optical adjustment structure is located within the first opening; In a plane perpendicular to the plane of the substrate, the first angle corresponds to a first truncated edge of the first sidewall, the second angle corresponds to a second truncated edge of the first sidewall, the minimum distance between the first truncated edge and the third optical adjustment structure is a first distance d1, and the minimum distance between the second truncated edge and the third optical adjustment structure is a second distance d2; wherein, d1>d2, θ1>θ2.

2. The display panel according to claim 1, wherein The first sidewall includes a first sub-sidewall, and in a first plane, the angle between the first sub-sidewall and the substrate is a first angle θ1, and in a second plane, the angle between the first sub-sidewall and the substrate is a second angle θ2, and the first plane is parallel to the second plane and both are perpendicular to the plane of the substrate.

3. The display panel according to claim 1, wherein The first sidewall includes a first sub-sidewall and a second sub-sidewall, and in a first plane, the angle between the first sub-sidewall and the substrate is a first angle θ1, and the angle between the second sub-sidewall and the substrate is a second angle θ2, and the first plane is perpendicular to the plane of the substrate.

4. The display panel according to claim 1, wherein In a plane perpendicular to the plane of the substrate, the angle between the first sidewall and the substrate includes a third angle θ3, the third angle corresponds to a third truncated edge of the first sidewall, and the minimum distance between the third truncated edge and the third optical adjustment structure is a third distance d3, d2>d3, θ2>θ3; Wherein, (θ1 - θ2) / (d1 - d2) = (θ2 - θ3) / (d2 - d3).

5. The display panel according to claim 1, wherein In a plane perpendicular to the plane of the substrate, the angle between the first sidewall and the substrate includes a fourth angle θ4, the fourth angle corresponding to a fourth edge of the first sidewall, and the minimum distance between the fourth edge and the third optical adjustment structure is a fourth distance d4, where d2 > d4 and θ2 > θ4; Wherein, (θ1 - θ2) / (d1 - d2) < (θ2 - θ4) / (d2 - d4).

6. The display panel according to claim 1, wherein The first distance d1 or the second distance d2 satisfies: 1.5 μm ≤ d1 ≤ 4 μm, 1.5 μm ≤ d2 ≤ 4 μm.

7. The display panel according to claim 1, wherein The display panel further includes a third optical adjustment structure disposed on the same layer as the first optical adjustment structure. In a direction perpendicular to the plane of the substrate, the projection of the third optical adjustment structure is located within the first opening; The third optical adjustment structure includes a second opening and a third optical adjustment unit surrounding the second opening.

8. The display panel according to claim 1, wherein The light-emitting element at least includes a first light-emitting element and a second light-emitting element. The wavelength of the light emitted by the first light-emitting element is greater than the wavelength of the light emitted by the second light-emitting element. The second light-emitting element is a blue light-emitting element, and the first light-emitting element is a red light-emitting element or a green light-emitting element; The first opening includes a first sub-opening and a second sub-opening. The first light-emitting element corresponds to the first sub-opening, and the second light-emitting element corresponds to the second sub-opening; The display panel further includes a third optical adjustment structure disposed on the same layer as the first optical adjustment structure. In a direction perpendicular to the plane of the substrate, the projection of the third optical adjustment structure is located within the second sub-opening.

9. The display panel according to claim 1, wherein The light-emitting element at least includes a first light-emitting element and a second light-emitting element. The wavelength of the light emitted by the first light-emitting element is greater than the wavelength of the light emitted by the second light-emitting element. The second light-emitting element is a blue light-emitting element, and the first light-emitting element is a red light-emitting element or a green light-emitting element; The first opening includes a first sub-opening and a second sub-opening. The first light-emitting element corresponds to the first sub-opening, and the second light-emitting element corresponds to the second sub-opening; The display panel further includes a third optical adjustment structure disposed on the same layer as the first optical adjustment structure. In a direction perpendicular to the plane of the substrate, the projection of the third optical adjustment structure is located within the first opening; The third optical adjustment structure includes a first optical adjustment unit located in the first sub-opening and a second optical adjustment unit located in the second sub-opening; The second optical adjustment sub-unit is an integral structure, and the first optical adjustment sub-unit includes a second opening and a third optical adjustment unit surrounding the second opening.

10. A display device, characterized in that, Including the display panel according to any one of claims 1-9.

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