Display panel and display device

Abstract

The invention discloses a display panel and a display device, a black matrix layer is located at one side, far away from a substrate, of a plurality of light-emitting elements, and the black matrix layer comprises a black matrix and a first opening; the display panel comprises a plurality of sub-pixel areas, in the same sub-pixel area, at least two light-emitting elements comprise a main light-emitting element and a standby light-emitting element, and in the direction perpendicular to the plane where the substrate is located, the first opening is overlapped with the main light-emitting element, and the black matrix is overlapped with the standby light-emitting element; the display panel further comprises a light deflection module which is perpendicular to the direction of the plane where the substrate is located, and at least part of the light deflection module is located between the standby light-emitting element and the black matrix. The light emitted by the standby light-emitting element is emitted to the outside of the display panel through the first opening after the propagation direction is changed through the light deflection module, so that the black matrix layer does not need to be provided with an opening at the position of a chip of the standby light-emitting element, and both the improvement of the transfer yield and the reduction of the reflectivity of the display panel can be considered.

Description

Technical Field

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

[0002] For massive transfer of micro light emitting diodes (Micro LED), the transfer yield has always been a very important issue.

[0003] Currently, the relatively mature way to improve the transfer yield is to use redundant bits for repair. However, when designing and fabricating the anti-reflection layer of the black matrix (BM), the light-emitting elements of the redundant bits also need to be exposed, resulting in a reduction in the area of the BM and an increase in the reflectivity. Summary of the Invention

[0004] The present invention provides a display panel and a display device to balance improving the transfer yield and reducing the reflectivity of the display panel.

[0005] In a first aspect, an embodiment of the present invention provides a display panel, including a substrate, a plurality of light-emitting elements, and a black matrix layer. The black matrix layer is located on a side of the plurality of light-emitting elements away from the substrate, and the black matrix layer includes a black matrix and a first opening;

[0006] The display panel includes a plurality of sub-pixel regions. In the same sub-pixel region, at least two of the light-emitting elements include a main light-emitting element and a spare light-emitting element. In a direction perpendicular to the plane where the substrate is located, the first opening overlaps with the main light-emitting element, and the black matrix overlaps with the spare light-emitting element;

[0007] The display panel further includes a light deflection module. In a direction perpendicular to the plane where the substrate is located, at least a part of the light deflection module is located between the spare light-emitting element and the black matrix.

[0008] In a second aspect, an embodiment of the present invention further provides a display device, including the display panel described in the first aspect.

[0009] An embodiment of the present invention provides a display panel and a display device. The display panel includes a light deflection module. In a direction perpendicular to the plane of the substrate, at least a part of the light deflection module is located between a spare light-emitting element and a black matrix. After the light emitted by the spare light-emitting element changes its propagation direction through the light deflection module, it is emitted outside the display panel through a first opening, so that the black matrix layer can emit the light emitted by the spare light-emitting element outside the display panel without setting an opening at the chip position of the spare light-emitting element. The light-emitting elements in each sub-pixel region can be successfully lit, and both the transfer yield of the display panel and the reflectivity can be taken into account. Among them, the chip position is the position where the light-emitting element is set. The chip is the light-emitting element.

[0010] 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

[0011] 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. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 is a schematic structural diagram of a display panel in the related art;

[0013] Figure 2 is Figure 1 a sectional view of the display panel in

[0014] Figure 3 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0015] Figure 4 is Figure 3 a sectional view of the display panel in

[0016] Figure 5 is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0017] Figure 6 is Figure 5 a sectional view of the display panel in

[0018] Figure 7 is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0019] Figure 8 isFigure 7 A sectional view of the display panel in along CC';

[0020] Figure 9 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0021] Figure 10 It is Figure 9 A sectional view of the display panel in along CC';

[0022] Figure 11 It is Figure 9 Another sectional view of the display panel in along CC';

[0023] Figure 12 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0024] Figure 13 It is Figure 12 A sectional view of the display panel in along CC';

[0025] Figure 14 It is Figure 12 Another sectional view of the display panel in along CC'; Figure 15 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0026] Figure 16 It is Figure 15 A sectional view of the display panel in along CC';

[0027] Figure 17 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0028] Figure 18 It is Figure 17 A sectional view of the display panel in along CC'. Detailed implementation manners

[0029] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that the data used in this way 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 "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have 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.

[0031] Figure 1 is a schematic structural diagram of a display panel of the related art, Figure 2 is Figure 1 a cross-sectional view of the display panel in Figure 1 along AA', referring to Figure 2 and

[0032] During mass transfer, in order to improve the transfer yield, two chip positions are designed in each sub-pixel region, that is, two chip positions are designed in the sub-pixel region B. One of the chip positions is set with the main light-emitting element 121, and the other chip position is a redundant bit. The main light-emitting element 121 is provided in each sub-pixel region B. If the main light-emitting element 121 in a certain sub-pixel region B fails, another spare light-emitting element 122 is transferred to another chip position in this sub-pixel region B to improve the transfer yield. The chip position is the position where the light-emitting element 120 is set. The chip is the light-emitting element 120. When preparing the anti-reflection layer design of the black matrix 131, it is necessary to expose both chip positions to ensure that the light-emitting elements in the sub-pixel region are successfully lit. However, the redundant chip repair is uncertain, and at the same time, the black matrix 131 is a light mask to form a pattern, so it is necessary to reserve all redundant bits, resulting in a relatively large area occupied by each first opening 132, and the area of the black matrix 131 will be correspondingly reduced, and the reflectivity of the display panel will increase exponentially, greatly affecting the optical characteristics of the micro light-emitting diode product.

[0033] It can be understood that the black matrix 131 can block light, which can greatly reduce the problem of high reflectivity of the display panel caused by metal components in the driving circuit and avoid affecting the display effect. In addition, in the display panel, since there are gaps between the light-emitting elements 120, if not processed, external light will enter from these gaps, affecting the display effect and causing light leakage when displaying a black screen. The black matrix 131 can cover these gaps, effectively preventing light leakage and improving the display contrast. In summary, reducing the area of the black matrix 131 will increase the reflectivity of the display panel and affect the display effect.

[0034] In order to balance improving the yield of massive transfer and reducing the reflectivity of the display panel to enhance the display effect, the present invention provides a display panel and a display device. Figure 3 It is a schematic structural diagram of a display panel provided by an embodiment of the present invention. Figure 4 is Figure 3 A cross-sectional view of the display panel in Figure 3 along AA'. Refer to Figure 4 and

[0035] In the embodiment of the present invention, by setting the light deflection module 140, the light emitted by the standby light-emitting element 122 changes its propagation direction after passing through the light deflection module 140 and then exits the display panel through the first opening 132, so that the black matrix layer 130 can also emit the light emitted by the standby light-emitting element 122 to the outside of the display panel without setting an opening at the chip position of the standby light-emitting element 122, and the light-emitting elements 120 in each sub-pixel region B can be successfully lit. The display panel provided by the embodiment of the present invention can balance improving the transfer yield and reducing the reflectivity of the display panel.

[0036] It can be understood that the mask for preparing the black matrix layer 130 is fixed, but the sub-pixel region B where the main light-emitting element 121 is damaged is not fixed. After the transfer is completed, a test will be carried out. The test finds which main light-emitting element 121 in the sub-pixel region B does not light up, and a spare light-emitting element 122 will be prepared in the sub-pixel region B for repair. Therefore, only one main light-emitting element 121 is included in the sub-pixel region B that can be successfully lit by the test, and a spare light-emitting element 122 will be prepared again in the sub-pixel region B that cannot be successfully lit by the test to improve the transfer yield. The position of the spare light-emitting element 122 in the accompanying drawings of the specification of the present invention in which sub-pixel region B is only an example and not a limitation of the present invention.

[0037] Specifically, the light deflection module 140 may include a mirror, and the light emitted by the spare light-emitting element 122 can be reflected by the mirror to the outside of the display panel through the first opening 132. Alternatively, the light deflection module 140 may include a refractive index change material, and the light emitted by the spare light-emitting element 122 is changed in the propagation direction through the refractive index change material, so as to migrate the light emitted by the spare light-emitting element 122, so that the light emitted by the spare light-emitting element 122 is emitted to the outside of the display panel through the first opening 132. Thus, it can be ensured that even when the setting position of the spare light-emitting element 122 is uncertain, the reflectivity of the display panel can be reduced.

[0038] It should be noted that in the embodiments of the present invention, the light deflection module 140 may be provided in each sub-pixel region B, or the light deflection module 140 may be provided only in the sub-pixel region B where the spare light-emitting element 122 is provided. In the embodiments of the present invention Figure 3 and Figure 4 illustrate the case where the light deflection module 140 is provided in each sub-pixel region B, Figures 5 - 18 illustrate the case where the light deflection module 140 is provided only in the sub-pixel region B where the spare light-emitting element 122 is provided.

[0039] Continue to refer to Figure 3 and Figure 4 , in an embodiment, the light deflection module 140 includes a first reflection element 141 and a second reflection element 142; in a direction perpendicular to the plane of the substrate 110, the first reflection element 141, the spare light-emitting element 122 overlap with the black matrix 131, the second reflection element 142 overlaps with the first opening 132, and the main light-emitting element 121 overlaps with the first opening 132.

[0040] It can be understood that in the embodiment of the present invention, the first reflection element 141, the spare light-emitting element 122 and the black matrix 131 overlap, which can reduce the area occupied by the first opening 132, and the area of the black matrix 131 will increase accordingly. The light emitted by the spare light-emitting element 122 is reflected by the first reflection element 141 to the surface of the second reflection element 142 facing the first opening 132, and then reflected by the surface of the second reflection element 142 facing the first opening 132, and exits from the first opening 132 to the outside of the display panel. This enables the black matrix layer 130 to emit the light emitted by the spare light-emitting element 122 to the outside of the display panel without setting an opening at the chip position of the spare light-emitting element 122, and the light-emitting elements 120 in each sub-pixel region B can be successfully lit. The display panel provided by the embodiment of the present invention can take into account both improving the transfer yield and reducing the reflectivity of the display panel.

[0041] Figure 5 FIG. 4 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. Figure 6 is Figure 5 a cross-sectional view of the display panel in FIG. 4 along CC', referring to Figure 5 and Figure 6 In one embodiment, the first reflection element 141 includes a first mirror 1411, and the angle between the plane where the first mirror 1411 is located and the plane where the substrate 110 is located is α1, and α1 is not 0°; the second reflection element 142 includes a second mirror 1421, and the angle between the plane where the second mirror 1421 is located and the plane where the substrate 110 is located is α2, and α2 is not 0°.

[0042] It can be understood that the plane where the first mirror 1411 is located intersects with the plane where the substrate 110 is located, and the plane where the second mirror 1421 is located intersects with the plane where the substrate 110 is located. α1 is not 0°, and α2 is not 0°. The first mirror 1411 and the second mirror 1421 are inclined, which can ensure that the light emitted by the spare light-emitting element 122 can be reflected by the first mirror 1411 and the second mirror 1421 and then exit from the first opening 132 to the outside of the display panel.

[0043] Optionally, in one embodiment, α1 is greater than 35° and less than 55°, and α2 is greater than 35° and less than 55°.

[0044] It can be understood that α1 is greater than 35° and less than 55°, and α2 is greater than 35° and less than 55°, which can ensure that most of the light emitted by the spare light-emitting element 122 can be reflected by the first mirror 1411 and the second mirror 1421 and then exit from the first opening 132 to the outside of the display panel.

[0045] Optionally, in one embodiment, α1 and α2 are equal to 45°.

[0046] It can be understood that when α1 and α2 are equal to 45°, the light emitted by the spare light-emitting element 122 can be maximally reflected, so that more of the light emitted by the spare light-emitting element 122 is emitted from the first opening 132 to the outside of the display panel, and the inclination angles of the first mirror 1411 and the second mirror 1421 are the same, which can reduce the manufacturing difficulty.

[0047] Optionally, on the basis of the above embodiment, continue to refer to Figure 6 , the display panel further includes a first organic layer 150, and the first organic layer 150 is located between the black matrix layer 130 and the plurality of light-emitting elements 120; the first organic layer 150 is provided with a first groove 151 and a second groove 152 on a side away from the light-emitting elements 120, the first mirror 1411 is located on the side wall of the first groove 151, and the second mirror 1421 is located on the side wall of the second groove 152.

[0048] Specifically, the first organic layer 150 is used to fill the gaps between the light-emitting elements 120. By providing the first groove 151 and the second groove 152 on a side of the first organic layer 150 away from the light-emitting elements 120, the first mirror 1411 and the second mirror 1421 can be fixed, and the sizes of α1 and α2 can be changed by changing the shapes of the first groove 151 and the second groove 152.

[0049] Optionally, on the basis of the above embodiment, continue to refer to Figure 6 , the display panel further includes a second organic layer 160, and the second organic layer 160 is located between the first organic layer 150 and the black matrix layer 130, and the second organic layer 160 fills the first groove 151 and the second groove 152.

[0050] Specifically, the second organic layer 160 is used to fill the gaps in the display panel, and the second organic layer 160 can adopt various polymer materials such as silicone rubber and epoxy resin. The first organic layer 150 can adopt an organic light-emitting material, and the formulation and manufacturing process of the organic light-emitting material can be optimized according to actual requirements.

[0051] Optionally, on the basis of the above embodiment, the first organic layer 150 and the second organic layer 160 have the same refractive index.

[0052] In the embodiment of the present invention, the first organic layer 150 and the second organic layer 160 have the same refractive index, which can prevent the light emitted by the spare light-emitting element 122 from being refracted at the junction of the first organic layer 150 and the second organic layer 160, and can improve the display effect.

[0053] Optionally, in one embodiment, the first mirror 1411 and the second mirror 1421 may both be made of a metal conductive material. The first reflective element 141 may further include a first control electrode and a first control transistor, and the second reflective element 142 may further include a second control electrode and a second control transistor. The first control electrode and the second control electrode are both made of a conductive material. The first end of the first mirror 1411 is disposed in the first organic layer 150, and the second end of the first mirror 1411 is suspended. The first end of the second mirror 1421 is disposed in the first organic layer 150, and the second end of the second mirror 1421 is suspended. The first control electrode and the second control electrode are disposed in the first organic layer 150. Since the first mirror 1411, the second mirror 1421, the first control electrode, and the second control electrode are all made of a conductive material, different voltages are applied to the first mirror 1411 and the first control electrode respectively through the first control transistor, and different voltages are applied to the second mirror 1421 and the second control electrode respectively through the second control transistor. Due to the existence of the voltage difference, an interaction will occur between the first mirror 1411 and the first control electrode and between the second mirror 1421 and the second control electrode due to the electric field. Since the first control electrode and the second control electrode are both fixedly disposed in the first organic layer 150, and one end of each of the first mirror 1411 and the second mirror 1421 is fixed on the first organic layer 150 and the other end is suspended, when the voltage differences between the first mirror 1411 and the first control electrode and between the second mirror 1421 and the second control electrode are different, the angle α1 between the plane of the first mirror 1411 and the plane of the substrate 110 will be different, and the angle α2 between the plane of the second mirror 1421 and the plane of the substrate 110 will be different. In some embodiments, the first mirror 1411 and the second mirror 1421 may be elastic sheet structures with ductility, which is convenient for controlling their angles.

[0054] Figure 7 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. Figure 8 is Figure 7 a cross-sectional view of the display panel in Figure 7 along CC'. In one embodiment, referring to Figure 8 and

[0055] In the embodiment of the present invention, by providing the third reflector 1412, more light emitted by the standby light-emitting element 122 can be reflected, reducing the scattering and loss of light, improving the utilization rate of light, and further enhancing the display effect.

[0056] Optionally, on the basis of the above embodiment, α3 is less than α1.

[0057] In the embodiment of the present invention, α3 being less than α1 enables a part of the light emitted by the standby light-emitting element 122 to be reflected by the third reflector 1412 to the surface of the first reflector 1411 facing the first opening 132, and then after being reflected by the first reflector 1411, it exits from the first opening 132 to the outside of the display panel. Thus, more light emitted by the standby light-emitting element 122 can exit from the first opening 132 to the outside of the display panel, reducing the scattering and loss of light, improving the utilization rate of light, and further enhancing the display effect.

[0058] Figure 9 It is a schematic structural diagram of another display panel provided by the embodiment of the present invention. Figure 10 is Figure 9 A cross-sectional view of the display panel in along CC'. In one embodiment, referring to Figure 9 and Figure 10 , α3 is equal to 0°.

[0059] In the embodiment of the present invention, when α3 is equal to 0°, a part of the light emitted by the standby light-emitting element 122 can be reflected by the third reflector 1412 to the cathode pad 1211 of the main light-emitting element 121 close to the standby light-emitting element 122. After being reflected by the cathode pad 1211 of the main light-emitting element 121, it exits from the first opening 132 to the outside of the display panel. The scattering and loss of light can be reduced, the utilization rate of light can be improved, and the display effect can be further enhanced.

[0060] Figure 11 is Figure 9 Another cross-sectional view of the display panel in along CC'. On the basis of the above embodiment, referring to Figure 11 , the length of the cathode pad 1211 of the standby light-emitting element 122 close to the main light-emitting element 121 in the first direction X is greater than the length of the anode pad / cathode pad on the same side of the main light-emitting element 121.

[0061] In the embodiment of the present invention, when α3 is equal to 0°, a part of the light emitted by the spare light-emitting element 122 can be reflected by the third mirror 1412 to the anode pad 1221 on the side of the spare light-emitting element 122 close to the main light-emitting element 121. After being reflected by the anode pad 1221 of the spare light-emitting element 122, it exits to the outside of the display panel through the first opening 132. This can reduce the scattering and loss of light, improve the utilization rate of light, and further enhance the display effect.

[0062] As a feasible implementation, continue to refer to Figures 5 - 11 , in the same sub-pixel region B, the main light-emitting element 121 and the spare light-emitting element 122 are arranged along the first direction x; along the first direction x, the orthographic projection of the second mirror 1421 on the substrate 110 is located on the side of the orthographic projection of the main light-emitting element 121 on the substrate 110 away from the orthographic projection of the first mirror 1411 on the substrate 110.

[0063] It should be noted that along the first direction x, the orthographic projection of the second mirror 1421 on the substrate 110 is located on the side of the orthographic projection of the main light-emitting element 121 on the substrate 110 away from the orthographic projection of the first mirror 1411 on the substrate 110, which can avoid affecting the normal main light-emitting element 121 from emitting light to the outside of the display panel through the first opening 132 when the first reflecting element 141 and the second reflecting element 142 are provided in each sub-pixel region B.

[0064] Figure 12 is a schematic structural diagram of another display panel provided by the embodiment of the present invention, Figure 13 is Figure 12 a sectional view of the display panel in Figure 12 along CC'. As another feasible implementation, in one embodiment, refer to Figure 13 , in the same sub-pixel region B, the main light-emitting element 121 and the spare light-emitting element 122 are arranged along the first direction x; along the first direction x, the orthographic projection of the second mirror 1421 on the substrate 110 is located between the orthographic projection of the main light-emitting element 121 on the substrate 110 and the orthographic projection of the first mirror 1411 on the substrate 110.

[0065] It should be noted that along the first direction x, the orthographic projection of the second mirror 1421 on the substrate 110 is located between the orthographic projection of the main light-emitting element 121 on the substrate 110 and the orthographic projection of the first mirror 1411 on the substrate 110, which is suitable for the case where the first reflecting element 141 and the second reflecting element 142 are only provided in the sub-pixel region B where the spare light-emitting element 122 is provided, and can reflect the light emitted by the spare light-emitting element 122 through the first mirror 1411 and the second mirror 1421 respectively, and then exit to the outside of the display panel through the first opening 132.

[0066] Optionally, in one embodiment, continuing to refer to Figure 4 , Figure 6 , Figure 8 , Figure 10 , Figure 11 and Figure 13 , the first reflector 1411 includes a plane mirror, and the second reflector 1421 includes a plane mirror.

[0067] In this embodiment, both the first reflector 1411 and the second reflector 1421 include plane mirrors, which can accurately reflect light and do not change the concentric nature of the light beam. After being reflected by them, the divergent concentric light beam remains a divergent concentric light beam, and the convergent concentric light beam remains a convergent concentric light beam. It has a high reflectivity and can accurately reflect the light emitted by the standby light-emitting element 122 and emit it out of the display panel through the first opening 132.

[0068] Figure 14 is Figure 12 Another cross-sectional view of the display panel along CC' in Figure 14 , the first reflector 1411 includes a concave mirror, and the concave surface of the first reflector 1411 faces the standby light-emitting element 122; the second reflector 1421 includes a concave mirror, and the concave surface of the second reflector 1421 faces the first opening 132.

[0069] In the embodiment of the present invention, the concave surface of the first reflector 1411 faces the standby light-emitting element 122, which can converge the light emitted by the standby light-emitting element 122 and reflect it onto the concave surface of the second reflector 1421. After being reflected by the concave surface of the second reflector 1421, it is emitted out of the display panel through the first opening 132. Since the concave mirror has a converging effect on light, in the embodiment of the present invention, the first reflector 1411 includes a concave mirror and the second reflector 1421 includes a concave mirror, which can make the light emitted by the standby light-emitting element 122 more concentrated and bright, thereby improving the display effect.

[0070] Optionally, in one embodiment, both the first reflector 1411 and the second reflector 1421 may include magnetostrictive deformable mirrors and magnetic driving members. The magnetic driving members generate driving forces by changing the direction of the magnetic poles to drive the magnetostrictive deformable mirrors to deform, so that the magnetostrictive deformable mirrors are bent as a whole to form concave surfaces, so that the concave surface of the first reflector 1411 faces the standby light-emitting element 122, and the concave surface of the second reflector 1421 faces the first opening 132.

[0071] It can be understood that the first reflector 1411 and the second reflector 1421 in the embodiments of the present invention can directly adopt concave reflectors, or a magnetostrictive deformation mirror and a magnetic driving member can be provided, and a driving force is generated by changing the magnetic pole direction to drive the magnetostrictive deformation mirror to deform, thereby forming a concave reflector.

[0072] In one embodiment, the second reflecting element 142 includes a diffuse reflection structure and / or a diffuse reflection material.

[0073] In the embodiments of the present invention, the second reflecting element 142 including the diffuse reflection structure and / or the diffuse reflection material can uniformly scatter the light emitted by the standby light-emitting element 122 within a relatively wide angular range, so that more of the light emitted by the standby light-emitting element 122 can be emitted from the first opening 132 to the outside of the display panel. Figure 15 It is a schematic structural diagram of another display panel provided by the embodiments of the present invention. Figure 16 is Figure 15 A cross-sectional view of the display panel in along CC'. In one embodiment, referring to Figure 15 and Figure 16 , in the direction perpendicular to the plane of the substrate 110, the second reflecting element 142 overlaps with the main light-emitting element 121; the second reflecting element 142 includes a semi-transmissive and semi-reflective element.

[0074] In one embodiment, the semi-transmissive and semi-reflective element can be prepared from a metal conductive material. The second reflecting element 142 can further include a second control electrode and a second control transistor. The first end of the semi-transmissive and semi-reflective element is disposed in the first organic layer 150, the second end of the semi-transmissive and semi-reflective element is suspended, the second control electrode is disposed in the first organic layer 150, and different voltages are applied to the semi-transmissive and semi-reflective element and the second control electrode respectively through the second control transistor. Due to the existence of the voltage difference, an interaction will occur between the semi-transmissive and semi-reflective element and the second control electrode due to the electric field. Since the second control electrode is fixedly disposed in the first organic layer 150, one end of the semi-transmissive and semi-reflective element is fixed on the first organic layer 150 and the other end is suspended. When the voltage difference between the semi-transmissive and semi-reflective element and the second control electrode is different, it will cause the angle between the plane where the semi-transmissive and semi-reflective element is located and the plane where the substrate 110 is located to be different. Therefore, if the first reflecting element 141 and the second reflecting element 142 are provided in each sub-pixel region B, the angle between the plane where the semi-transmissive and semi-reflective element is located and the plane where the substrate 110 is located in the sub-pixel region B provided with the standby light-emitting element 122 can be controlled to be 45° through the second control transistor, and the angle between the plane where the semi-transmissive and semi-reflective element is located and the plane where the substrate 110 is located in the sub-pixel region B not provided with the standby light-emitting element 122 can be controlled to be 90°.

[0075] It should be noted that when the first reflective element 141 and the second reflective element 142 are only arranged in the sub-pixel region B where the backup light-emitting element 122 is arranged, the first organic layer 150 can be provided with a first groove 151 and a second groove 152 on the side far from the light-emitting element 120, so as to further arrange the semi-transmissive and semi-reflective element on the side wall of the second groove 152.

[0076] In this embodiment, the second reflective element 142 includes a semi-transmissive and semi-reflective element. In the direction perpendicular to the plane of the substrate 110, the second reflective element 142 overlaps with the main light-emitting element 121, which can further reduce the area occupied by the first opening 132 and increase the area occupied by the black matrix 131. It can take into account improving the transfer yield of the display panel and reducing the reflectivity, and at the same time can also improve the light utilization rate and the display effect.

[0077] Figure 17 It is a schematic structural diagram of another display panel provided by an embodiment of the present invention. Figure 18 is Figure 17 a cross-sectional view of the display panel in Figure 17 along CC'. In one embodiment, referring to Figure 18 and

[0078] It should be noted that in the embodiment of the present invention, the modulation layer 143 can be arranged in each sub-pixel region B, or the modulation layer 143 can be only arranged in the sub-pixel region B where the backup light-emitting element 122 is arranged. In the accompanying drawings of the specification of the present invention, only the case where the modulation layer 143 is arranged in the sub-pixel region B where the backup light-emitting element 122 is arranged is exemplified.

[0079] Specifically, the materials of the first electrode 1432 and the second electrode 1433 are mainly transparent conductive materials, such as, including but not limited to, indium tin oxide (ITO) and / or titanium dioxide (TiO2). The modulation sub-layer 1431 can be made of liquid crystal. When a voltage is applied to the first electrode 1432 and the second electrode 1433, an electric field will be generated. Under the action of this electric field, the modulation sub-layer 1431 will modulate and deflect the light incident into the modulation layer 143. In this embodiment, by adjusting the voltage applied to the first electrode 1432 and the second electrode 1433, the light emitted by the standby light-emitting element 122 is deflected by the modulation sub-layer 1431 and then exits from the first opening 132 to the outside of the display panel, so that the black matrix layer 130 can also emit the light emitted by the standby light-emitting element 122 to the outside of the display panel without setting an opening at the chip position of the standby light-emitting element 122, and the light-emitting elements 120 in each sub-pixel region B can be successfully lit. The display panel provided by the embodiment of the present invention can take into account improving the transfer yield and reducing the reflectivity of the display panel. Optionally, on the basis of the above embodiment, continue to refer to Figure 18 , the display panel further includes a filling layer 170, and the filling layer 170 is located between the plurality of light-emitting elements 120 and the black matrix layer 130; in the direction perpendicular to the plane where the substrate 110 is located, the filling layer 170, the main light-emitting element 121 and the first opening 132 overlap.

[0080] It can be understood that after the modulation layer 143 is provided, there will be a gap between the black matrix layer 130 and the first organic layer 150. In this embodiment, when the filling layer 170 is provided between the plurality of light-emitting elements 120 and the black matrix layer 130, it can fill the gap between the black matrix layer 130 and the first organic layer 150, which is beneficial to the stability of the display panel structure. Specifically, the filling layer 170 can adopt various polymer materials such as silicone rubber and epoxy resin.

[0081] In one embodiment, continue to refer to Figure 18 , the display panel further includes a prism 180, the prism 180 is located at the first opening 132, and is provided on the side of the filling layer 170 close to the black matrix layer 130. The prism 180 mainly plays a role of condensing light, and can change the non-parallelly propagating light into parallelly propagating light, such as changing it into light propagating in the vertical direction. The material of the prism 180 can include organic materials or inorganic materials.

[0082] In summary, the embodiment of the present invention can take into account improving the transfer yield and reducing the reflectivity of the display panel, and improving the display effect. Through experimental verification, the reflectivity of the display panel provided by the embodiment of the present invention can be reduced by more than 40%. There will be differences among different products, but the reflectivity will be reduced.

[0083] Optionally, based on the above embodiments, in the same sub-pixel region B, the main light-emitting element 121 and the backup light-emitting element 122 have the same light-emitting color.

[0084] It can be understood that in the same sub-pixel region B, the main light-emitting element 121 and the backup light-emitting element 122 have the same light-emitting color, so that when the main light-emitting element 121 is damaged, the light deflection module 140 can deflect the light emitted by the backup light-emitting element 122 out of the display panel through the first opening 132, ensuring that the light-emitting element 120 in the sub-pixel region B is successfully lit.

[0085] An embodiment of the present invention further provides a display device, including the display panel provided in any of the above embodiments.

[0086] Exemplarily, the display device may be an in-vehicle display device.

[0087] It should be noted that since the display device provided in the embodiment of the present invention includes the display panel provided in any of the above embodiments, it has the same beneficial effects. For the content not described in detail in the embodiment of the present invention, reference may be made to the display panel provided in the above embodiments.

[0088] The above specific embodiments do not constitute a limitation to 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 within the protection scope of the present invention.

Claims

1. A display panel, characterized in that: It includes a substrate, a plurality of light-emitting elements and a black matrix layer, wherein the black matrix layer is located on a side of the plurality of light-emitting elements away from the substrate, and the black matrix layer includes a black matrix and a first opening; The display panel includes a plurality of sub-pixel regions, in the same sub-pixel region, at least two of the light-emitting elements include a main light-emitting element and a spare light-emitting element, and in a direction perpendicular to the plane where the substrate is located, the first opening overlaps with the main light-emitting element, and the black matrix overlaps with the spare light-emitting element; The display panel further comprises a light deflection module which is perpendicular to the direction of the plane where the substrate is located, and at least a part of the light deflection module is located between the spare light emitting element and the black matrix.

2. The display panel according to claim 1, characterized in that: The light deflection module includes a first reflective element and a second reflective element; In a direction perpendicular to the plane where the substrate is located, the first reflective element and the spare light-emitting element overlap with the black matrix, the second reflective element overlaps with the first opening, and the main light-emitting element overlaps with the first opening.

3. The display panel according to claim 2, characterized in that: The first reflective element comprises a first reflector, and an angle between a plane where the first reflector is located and a plane where the substrate is located is α1, and α1 is not 0°; The second reflective element includes a second reflector, and the angle between the plane where the second reflector is located and the plane where the substrate is located is α2, and α2 is not 0°.

4. The display panel according to claim 3, characterized in that: α1 is greater than 35° and less than 55°, and α2 is greater than 35° and less than 55°.

5. The display panel according to claim 4, characterized in that: α1 and α2 are equal to 45°.

6. The display panel according to claim 3, characterized in that: It also includes a first organic layer, wherein the first organic layer is located between the black matrix layer and the plurality of light-emitting elements; The first organic layer has a first groove and a second groove on a side away from the light emitting element. The first reflector is located on a side wall of the first groove, and the second reflector is located on a side wall of the second groove.

7. The display panel according to claim 6, characterized in that: The invention also includes a second organic layer, wherein the second organic layer is located between the first organic layer and the black matrix layer, and the second organic layer fills the first groove and the second groove.

8. The display panel according to claim 7, characterized in that: The first organic layer and the second organic layer have the same refractive index.

9. The display panel according to claim 3, characterized in that: In the same sub-pixel region, the main light emitting element and the backup light emitting element are arranged along a first direction; The first reflective element further includes a third reflector. Along the first direction, the third reflector is located between the first reflector and the second reflector. The angle between the plane where the third reflector is located and the plane where the substrate is located is α3, and α3 is not equal to α1.

10. The display panel according to claim 9, characterized in that: α3 is smaller than α1.

11. The display panel according to claim 10, characterized in that: α3 is equal to 0°.

12. The display panel according to claim 3, characterized in that: In the same sub-pixel region, the main light emitting element and the backup light emitting element are arranged along a first direction; Along the first direction, the orthographic projection of the second reflector on the substrate is located on a side of the orthographic projection of the main light-emitting element on the substrate away from the orthographic projection of the first reflector on the substrate.

13. The display panel according to claim 3, characterized in that: In the same sub-pixel region, the main light emitting element and the backup light emitting element are arranged along a first direction; Along the first direction, the orthographic projection of the second reflector on the substrate is located between the orthographic projection of the main light-emitting element on the substrate and the orthographic projection of the first reflector on the substrate.

14. The display panel according to claim 3, characterized in that: The first reflector includes a plane reflector, and the second reflector includes a plane reflector.

15. The display panel according to claim 3, characterized in that: The first reflector comprises a concave reflector, and the concave surface of the first reflector faces the spare light emitting element; The second reflector includes a concave reflector, and a concave surface of the second reflector faces the first opening.

16. The display panel according to claim 2, characterized in that: The second reflective element includes a diffuse reflective structure and / or a diffuse reflective material.

17. The display panel according to claim 2, characterized in that: In a direction perpendicular to the plane where the substrate is located, the second reflective element overlaps with the main light-emitting element; The second reflective element includes a semi-reflective and semi-transmissive element.

18. The display panel according to claim 1, characterized in that: The light deflection module comprises a modulation layer, which is perpendicular to the direction of the plane where the substrate is located, and the modulation layer, the spare light-emitting element and the black matrix overlap; The modulation layer includes a modulation sublayer, a first electrode and a second electrode. The refractive index of the modulation sublayer changes when power is supplied. The first electrode and the second electrode are located at opposite sides of the modulation sublayer.

19. The display panel according to claim 18, characterized in that: It also includes a filling layer, wherein the filling layer is located between the plurality of light-emitting elements and the black matrix layer; In a direction perpendicular to the plane where the substrate is located, the filling layer, the main light-emitting element and the first opening overlap.

20. The display panel according to claim 1, characterized in that: In the same sub-pixel region, the main light emitting element and the backup light emitting element have the same light emitting color.

21. A display device, characterized in that: A display panel comprising any one of claims 1-20.

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