Display panel and display device

Abstract

The present application discloses a display panel and a display device. The display panel includes: a first substrate, a second substrate, and an isolation structure and a plurality of light-emitting devices located between the first substrate and the second substrate; the second substrate and the first substrate are both connected to the isolation structure, and the first substrate, the isolation structure and the first substrate form a plurality of excitation cavities, and the light-emitting devices are located in the excitation cavities; a quantum dot layer, including quantum dots, is located in the excitation cavity and is located on the side of the light-emitting device away from the first substrate; wherein a reflective portion is provided on the side wall of the excitation cavity, at least part of the reflective portion covers at least part of the first substrate and at least part of the second substrate, and a light outlet is provided on the side of the reflective portion close to the second substrate. The display panel of the present application can improve the efficiency of quantum dot excitation, improve the brightness of the display panel, and avoid crosstalk between light of different colors between adjacent pixel units, so that the color purity of the light displayed is higher, and the display effect of the display panel is improved.

Description

Technical Field

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

[0002] The micro-LED display panel integrates micro-LEDs (Micro-LEDs) at a high density and uses them to display light. Compared with ordinary LEDs, the biggest advantage of micro-LEDs is that each LED unit can be used as a sub-pixel to independently and dynamically emit light. The micro-LED display panel has the characteristics of high efficiency, high brightness, high reliability and fast response time. The micro-LED display panel can excite different quantum dots to emit light through the same micro-LED light, generating light of the color corresponding to the pixel unit of the display panel. Since all micro-LED devices have the same light-emitting capacity, the display light of the micro-LED display panel is more stable. Although the color accuracy of the light emitted by each pixel unit is high, when multiple pixel units cooperate to display light, the light emitted by the quantum dots corresponding to adjacent pixel units will crosstalk with each other, resulting in color difference in the display panel, affecting the color gamut of the micro-LED display panel. Summary of the invention

[0003] An embodiment of the present application provides a display panel, which can improve the color purity of the light emitted by the display panel to improve the color gamut of the display panel.

[0004] On the one hand, an embodiment of the present application provides a display panel, comprising: a first substrate and a second substrate, and an isolation structure and a plurality of light-emitting devices located between the first substrate and the second substrate; the second substrate and the first substrate are both connected to the isolation structure, the first substrate, the isolation structure and the first substrate form a plurality of excitation cavities, and the light-emitting devices are located in the excitation cavities; a quantum dot layer, comprising quantum dots, is located in the excitation cavity and on the side of the light-emitting device away from the first substrate; wherein a reflective portion is provided on the sidewall of the excitation cavity, at least a portion of the reflective portion covers at least a portion of the first substrate and at least a portion of the second substrate, and a light outlet is provided on a side of the reflective portion close to the second substrate.

[0005] The display device provided in the embodiment of the present application forms an excitation cavity around the quantum dot light-emitting device through an isolation structure, and a reflective portion is provided on the inner wall of the excitation cavity, so that the light emitted by the light-emitting device can be reflected in the excitation cavity and used for quantum dot excitation and luminescence. The light emitted by the quantum dot excitation will also be reflected in the excitation cavity and emitted from the light outlet for display and luminescence, thereby improving the utilization rate of the light emitted by the light-emitting device, that is, the conversion efficiency of the quantum dot luminescence. At the same time, since the reflective portion is provided in the excitation cavity, the light emitted by each light-emitting device is emitted from each light outlet, and will not be emitted through the side wall of the excitation cavity, thereby avoiding crosstalk between the light emitted by different light-emitting devices, thereby improving the color purity of the displayed picture, making the display of the display panel more realistic, and enhancing the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0007] Figure 1 A schematic diagram of a display panel according to an embodiment of the present application.

[0008] Figure 2 for Figure 1 The area A shown is a partially enlarged view of a display panel in an embodiment of the present application.

[0009] Figure 3 for Figure 2 The AA section shown is a cross-sectional view of a display panel in an embodiment of the present application.

[0010] Figure 4 for Figure 2 The AA section is a light path diagram of a cross-sectional view of a display panel in an embodiment of the present application.

[0011] Figure 5 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0012] Figure 6 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0013] Figure 7 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0014] Figure 8 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0015] Fig. 9 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0016] Fig.10 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0017] Fig.11 for Fig.10 The B area shown is a partially enlarged view of a display panel in an embodiment of the present application.

[0018] Fig.12 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0019] Fig.13 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0020] Fig.14 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0021] Fig.15 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0022] Fig.16 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0023] Fig.17 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0024] Reference numerals:

[0025] 100, display panel; 110, pixel unit;

[0026] 10. first substrate; 11. first metal layer; 12. signal line; 13. insulating protection layer; 14. bonding layer; 15. cathode line; 16A. source electrode; 16B. drain electrode; 16C. gate electrode; 17. active layer; 18. insulating layer;

[0027] 20. a second substrate;

[0028] 30. Isolation structure; 31. First protrusion; 32. Second protrusion; 33. Insulation structure;

[0029] 40. quantum dot layer; 41. quantum dots;

[0030] 50. Light emitting device;

[0031] 60, excitation cavity; 61, reflecting portion; 62, light outlet; 63, first reflecting portion; 64, second reflecting portion;

[0032] 70. color resist layer; 71. color resist unit; 72. black matrix;

[0033] 80. Scattering layer;

[0034] 90. Touch layer; 91. Touch signal line. DETAILED DESCRIPTION

[0035] The features and exemplary embodiments of various aspects of the application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the application. However, it is obvious to those skilled in the art that the application can be implemented when some details in these specific details are not needed. The following description of the embodiments is only to provide a better understanding of the application by illustrating the example of the application.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0037] Relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article, or device. In the absence of further restrictions, the elements defined by the statement "comprising ..." do not exclude the presence of additional identical elements in the process, method, article, or device that includes the elements.

[0038] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0039] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0040] It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0041] Micro-LED display panels use micro-LEDs as light-emitting devices. Usually, the pixel units of a micro-LED display panel correspond to micro-LEDs, and the micro-LEDs also include quantum dots corresponding to the pixel units. The micro-LED corresponding to a certain pixel unit emits light, which will excite the corresponding quantum dot to emit light. The color of the light emitted by the quantum dot is the color corresponding to the pixel unit. Multiple pixel units emit light in coordination to realize the display of the display panel. However, the brightness of the light emitted by a single pixel unit is low. When multiple pixel units emit light in coordination, the color purity of the displayed color is not high, which will affect the display effect of the display panel.

[0042] The applicant has found through research that when the micro-LED of a certain pixel unit emits light, in addition to stimulating the quantum dots of the pixel unit to emit light, a portion of the light will be directed to adjacent pixels, making the proportion of the light of the micro-LED used to stimulate the quantum dots low, that is, the efficiency of the micro-LED to stimulate the quantum dots to emit light is low, resulting in a lower brightness of the display panel, thereby affecting the display effect of the display panel. When the pixel unit displays light together with other pixel units, the light stimulated by the quantum dots corresponding to the pixel unit will be directed to adjacent pixel units, so that the light of the corresponding color emitted by the pixel unit will be mixed with the light of the corresponding color of the adjacent pixel unit, resulting in a decrease in the color purity of the light emitted by the pixel unit, and also causing the display effect of the display panel to deteriorate.

[0043] In view of the above analysis, the applicant proposed a display panel, in which an isolation structure is arranged between the first substrate and the second substrate, so that the first substrate, the second substrate and the isolation structure form an excitation cavity, and then the light-emitting device and the quantum dots are arranged in the excitation cavity, and a reflective portion is arranged on the inner wall of the excitation cavity. The light emitted by the light-emitting device will be reflected by the reflective portion in the excitation cavity, so that the light of the light-emitting device can be more fully used to excite the quantum dots to emit light, thereby improving the luminous brightness of the display panel and enhancing the display effect of the display panel. The light excited by the quantum dots will also be reflected by the reflective portion in the excitation cavity, so that more excitation light can be emitted from the light outlet and used for display light, further improving the luminous brightness of the display panel and further enhancing the display effect of the display panel. In addition, the reflective portion can also avoid the crosstalk between the excitation light of quantum dots corresponding to different luminous colors, thereby increasing the color purity of the light emitted by the device in the display and enhancing the display effect of the display panel.

[0044] Figure 1 A schematic diagram of a display panel according to an embodiment of the present application. Figure 2 for Figure 1 A partial enlarged view of area A of the first display panel is shown. Figure 3 for Figure 2 The AA section shown is a cross-sectional view of a display panel in an embodiment of the present application. Figure 4 for Figure 2 The AA section is a light path diagram of a cross-sectional view of a display panel in an embodiment of the present application.

[0045] refer to Figures 1 to 4 The embodiment of the present application provides a display panel 100, which includes: a first substrate 10 and a second substrate 20, and an isolation structure 30 and a plurality of light-emitting devices 50 located between the first substrate 10 and the second substrate 20; the second substrate 20 and the first substrate 10 are both connected to the isolation structure 30, the first substrate 10, the isolation structure 30 and the first substrate 10 form a plurality of excitation cavities 60, and the light-emitting devices 50 are located in the excitation cavities 60; a quantum dot layer 40 is located in the excitation cavity 60 and on the side of the light-emitting device 50 away from the first substrate 10; wherein a side wall of the excitation cavity 60 is provided with a reflective portion 61, at least a portion of the reflective portion 61 covers at least a portion of the first substrate 10 and at least a portion of the second substrate 20, and a light outlet 62 is provided on a side of the reflective portion 61 close to the second substrate 20.

[0046] The first substrate 10 may be a substrate of the display panel 100, and may be formed of a polymer material such as glass, polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyarylate (PAR) or glass fiber reinforced plastic (FRP). The first substrate 10 may be transparent, translucent or opaque. The second substrate 20 may be a cover plate of the display panel 100, and may be made of a material such as glass or polyimide (PI). The second substrate 20 is made of a transparent material. The second substrate 20 may also be an encapsulation layer of the display panel 100, for encapsulating the display panel of the display panel 100. The first substrate 10 and the second substrate 20 may also be flexible substrates, formed of a thin polymer, such as polyimide.

[0047] Continue to refer Figures 2 to 4 The isolation structure 30 is located between the first substrate 10 and the second substrate 20 . The isolation structure 30 , the first substrate 10 and the second substrate 20 form a plurality of excitation cavities 60 , and the excitation cavities 60 are isolated from each other.

[0048] Continue to refer Figure 3 and Figure 4 The light emitting device 50 may be an inorganic light emitting diode (LED) or an organic light emitting diode (OLED), such as a micro light emitting diode (Micro-LED) or a small light emitting diode (Mini-LED). The light emitting device 50 is located in the excitation cavity 60. The light emitting device 50 may be disposed on the side of the first substrate 10 facing the second substrate 20, so that the light emitting device 50 may emit light toward the second substrate 20.

[0049] Continue to refer Figure 3 and Figure 4, the quantum dot 41 of the quantum dot layer 40 is located in the excitation cavity 60 and is located on the side of the light emitting device 50 away from the first substrate 10, so that the light emitted by the light emitting device 50 can excite the quantum dot 41 to emit light. The color of the light emitted by the quantum dot 41 in a single excitation cavity 60 after excitation is consistent, and each excitation cavity 60 corresponds to a pixel unit 110 of the display panel 100. By setting different colors of light emitted by the quantum dot 41 in different excitation cavities 60 after excitation, different excitation cavities 60 can correspond to different pixel units 110, thereby realizing the display luminescence of the display panel 100. Exemplarily, when the display panel 100 includes a red pixel unit, a green pixel unit, and a blue pixel unit, the red pixel unit, the green pixel unit, and the blue pixel unit use the same micro-light emitting diode, and the light emitted by the micro-light emitting diode corresponding to the red pixel unit irradiates the quantum dot corresponding to the red pixel unit, which will excite red light. Similarly, the light emitted by the micro-light emitting diode corresponding to the green pixel unit irradiates the quantum dot corresponding to the green pixel unit, which will excite green light. The light emitted by the micro-LED corresponding to the blue pixel unit illuminates the quantum dot corresponding to the blue pixel unit, which will stimulate blue light. The red pixel unit, the green pixel unit and the blue pixel unit emit light in coordination to realize the display light of the display panel 100.

[0050] Continue to refer Figure 3 and Figure 4 , a reflective portion 61 is provided on the side wall of the excitation cavity 60, so that light hardly directly enters the adjacent excitation cavity 60 from one excitation cavity 60. At least part of the reflective portion 61 covers at least part of the first substrate 10, which can reduce the light leaking from the first substrate 10. The light-emitting device 50 is provided on the portion of the first substrate 10 not covered by the reflective portion 61. Considering that the reflective portion 61 may be made of metal material, the reflective portion 61 makes way for the light-emitting device 50 to avoid a short circuit of the light-emitting device 50. At least part of the reflective portion 61 covers at least part of the second substrate 20, and a light outlet 62 is provided on the side of the reflective portion 61 close to the second substrate 20. By covering the second substrate 20 with the reflective portion 61, the size of the light outlet 62 can be limited, thereby limiting the aperture ratio of the display panel.

[0051] Continue to refer Figure 4, the light emitted by the light emitting device 50 will be reflected back and forth in the excitation cavity 60 through the reflective portion 61, so the light of the light emitting device 50 in a certain excitation cavity 60 is difficult to enter other excitation cavities 60, so that the light of the light emitting device 50 can be fully used to excite the quantum dot 41 to emit light, thereby improving the efficiency of the light of the light emitting device 50 in exciting the quantum dot 41 to emit light, and improving the brightness of the light excited by the quantum dot 41, thereby improving the display effect of the display panel 100. The light excited by the quantum dot 41 will also be reflected back and forth in the excitation cavity 60 through the reflective portion 61, so most of the light excited by the quantum dot 41 in a certain excitation cavity 60 can be emitted through the light outlet 62 and used for the display light of the display panel 100, thereby improving the light brightness of the display panel 100 and improving the display effect of the display panel 100. Since the light excited by the quantum dots 41 in a certain excitation cavity 60 is difficult to enter the adjacent excitation cavity 60, the possibility of crosstalk between the light emitted from the light outlet 62 of the corresponding reflecting portion 61 in the adjacent excitation cavity 60 is reduced, thereby improving the color purity of the light emitted from the light outlet 62 of the corresponding reflecting portion 61 in the excitation cavity 60, thereby improving the accuracy of the color displayed by the display panel 100 and improving the display effect of the display panel 100.

[0052] In addition, when the light emitting device 50 uses a micro-LED, a blue light micro-LED or an ultraviolet light micro-LED is usually used. Since the light emitted by the light emitting device 50 can be reflected in the excitation cavity 60 and fully used to excite the quantum dot 41 to emit light, less blue light or ultraviolet light will be emitted from the light outlet 62, which will reduce the damage to the user's eyes and also reduce the damage of blue light or ultraviolet light to surrounding organisms.

[0053] Further, continue to refer to Figure 3 and Figure 4 , the excitation cavity 60 corresponds to the light emitting device 50 one by one. Compared with arranging a plurality of light emitting devices 50 in the excitation cavity 60, when the excitation cavity 60 corresponds to the light emitting device 50 one by one, the area of ​​the excitation cavity 60 on the plane where the first substrate 10 is located is smaller. Considering that the excitation cavity 60 corresponds to the pixel unit 110 of the display panel 100, the area of ​​a single pixel unit 110 is smaller, thereby increasing the pixel density of the display panel 100, improving the display resolution, and further improving the display effect of the display panel 100.

[0054] Figure 5 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application. Figure 6 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0055] Optionally, refer to Figure 5and Figure 6 , the isolation structure 30 is disposed on the first substrate 10 and extends toward the second substrate 20; or, the isolation structure 30 is disposed on the second substrate 20 and extends toward the first substrate 10. When the isolation structure 30 is disposed on the first substrate 10, the isolation structure 30 can be manufactured on the first substrate 10, and then the second substrate 20 is connected to the isolation structure 30, and the cross-sectional area of ​​the excitation cavity 60 gradually increases along the direction from the first substrate 10 to the second substrate 20. When the isolation structure 30 is disposed on the second substrate 20, the isolation structure 30 can be manufactured on the second substrate 20, and then the first substrate 10 is connected to the isolation structure 30, and the cross-sectional area of ​​the excitation cavity 60 gradually decreases along the direction from the first substrate 10 to the second substrate 20. The cross-sectional figure of the excitation cavity 60 formed on a plane perpendicular to the first substrate 10 is a trapezoid. When the light emitted by the light-emitting device 50 is directed toward the side wall of the excitation cavity 60, the inclined side wall of the excitation cavity 60 can reflect the light toward the middle of the excitation cavity 60, thereby improving the efficiency of the light emitted by the light-emitting device 50 in exciting the quantum dots 41 to emit light, thereby improving the brightness of the light displayed by the display panel 100 and improving the display effect of the display panel 100.

[0056] Figure 7 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0057] Preferably, reference Figure 7 , the isolation structure 30 includes: a first protrusion 31, which is arranged on the first substrate 10; a second protrusion 32, which is arranged along the second substrate 20; in a direction perpendicular to the first substrate 10, the projections of the first protrusion 31 and the second protrusion 32 at least partially overlap. When manufacturing the isolation structure 30, the first protrusion 31 is manufactured on the first substrate 10, and the second protrusion 32 is manufactured on the second substrate 20, the first protrusion 31 and the second protrusion 32 are aligned, and the first substrate 10 and the second substrate 20 are buckled together, so that the first substrate 10, the first protrusion 31, the second protrusion 32 and the second substrate 20 form an excitation cavity 60. In the above manufacturing process, the quantum dots 41 can be first filled in the space surrounded by the first protrusion 31, and then the first protrusion 31 and the second protrusion 32 are buckled together, so that the quantum dots 41 are formed in the excitation cavity 60, or the quantum dots 41 can be first filled in the space surrounded by the second protrusion 32, and then the first protrusion 31 and the second protrusion 32 are buckled together, so that the quantum dots 41 are formed in the excitation cavity 60.

[0058] Continue to refer Figure 7, along the direction from the first substrate 10 to the second substrate 20, the cross-sectional area of ​​the first protrusion 31 gradually decreases; along the direction from the second substrate 20 to the first substrate 10, the cross-sectional area of ​​the second protrusion 32 gradually decreases. The side walls of the first protrusion 31 and the side walls of the second protrusion 32 together form the side walls of the excitation cavity 60. Therefore, along the thickness direction of the display panel 100, the cross-sectional area of ​​the middle of the excitation cavity 60 is greater than the cross-sectional area of ​​the two ends, so that the excitation cavity 60 forms a space that is thin at the top and bottom and thick in the middle. That is to say, the excitation cavity 60 is perpendicular to the cross-sectional shape of the first substrate 10 to form a hexagon, and the inner side wall of the excitation cavity 60 forms a concave surface. The light emitted by the light-emitting device 50 is reflected by the concave inner side wall of the excitation cavity 60 and can be emitted to the middle of the excitation cavity 60, so that the light emitted by the light-emitting device 50 is more easily converged to the middle of the excitation cavity 60 and excites the quantum dots 41 to emit light, thereby further improving the efficiency of the light emitted by the light-emitting device 50 to excite the quantum dots 41 to emit light, thereby improving the brightness of the light displayed by the display panel 100 and improving the display effect of the display panel 100. Preferably, the side wall of the excitation cavity 60 forms a curved wall. For example, the excitation cavity 60 forms a spherical table shape, and the inner wall of the excitation cavity 60 forms a spherical curved surface, which can further improve the convergence effect of the light in the excitation cavity 60 after reflection.

[0059] Continue to refer Figure 7, along the thickness direction of the display panel 100, the ratio of the height of the first protrusion 31 to the height of the second protrusion 32 is greater than or equal to 1:2 and less than or equal to 2:1. Considering that the reflective portion 61 is located at the side wall formed by the first protrusion 31 and the second protrusion 32, when the ratio of the height of the first protrusion 31 to the height of the second protrusion 32 is greater than or equal to 1:2 and less than or equal to 2:1, the light emitted by the light emitting device 50 can converge toward the middle of the excitation cavity 60 after being reflected by the reflective portion 61, and is used to excite the quantum dot 41 to emit light. Therefore, the number of reflections of the light emitted by the light emitting device 50 in the excitation cavity 60 can be reduced, thereby reducing the total travel of the light emitted by the light emitting device 50 before exciting the quantum dot 41 to emit light, thereby reducing the attenuation of the light emitted by the light emitting device 50 in the excitation cavity 60, further improving the efficiency of the light emitted by the light emitting device 50 to excite the quantum dot 41 to emit light, improving the brightness of the display light of the display panel 100, and further improving the display effect of the display panel 100. In the process of manufacturing the isolation structure 30, when the height of the first protrusion 31 is greater than the height of the second protrusion 32, the quantum dot 41 is manufactured in the space surrounded by the first protrusion 31, and then the first protrusion 31 and the second protrusion 32 are buckled together to form the quantum dot 41 in the excitation cavity 60; when the height of the first protrusion 31 is less than the height of the second protrusion 32, the quantum dot 41 is manufactured in the space surrounded by the second protrusion 32, and then the first protrusion 31 and the second protrusion 32 are buckled together to form the quantum dot 41 in the excitation cavity 60. When the height of the first protrusion 31 is equal to the height of the second protrusion 32, the quantum dot 41 can be manufactured in the space surrounded by the first protrusion 31 or the space surrounded by the second protrusion 32.

[0060] Figure 8 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0061] Optionally, refer to Figure 8 The light emitting device 50 includes a light emitting surface, and the connection point of the first protrusion 31 and the second protrusion 32 is coplanar with the light emitting surface. Since the light emitting surface of the light emitting device 50 is coplanar with the connection point of the first protrusion 31 and the second protrusion 32, the light emitting device 50 can emit light in the middle part of the excitation cavity 60 where the cross-sectional area is the largest, so that most of the emitted light can be emitted to the reflective portion 61 at a smaller incident angle, and reflected to the middle part of the excitation cavity 60 to excite the quantum dot 41 to emit light, so that the optical path of the light emitted by the light emitting device 50 before exciting the quantum dot 41 can be further shortened, thereby further reducing the attenuation of the light emitted by the light emitting device 50, thereby further improving the efficiency of the light emitted by the light emitting device 50 in exciting the quantum dot 41 to emit light, improving the brightness of the light displayed by the display panel 100, and further improving the display effect of the display panel 100.

[0062] Further, continue to refer to Figure 7 and Figure 8 , the volume of the light emitting device 50 is less than or equal to 2 / 3 of the volume of the corresponding excitation cavity 60. When the light emitted by the light emitting device 50 is reflected in the excitation cavity 60, the volume of the light emitting device 50 is small, which can reduce the interference of the light emitting device 50 on the light reflection optical path, so that the light can be used to excite the quantum dot 41 to emit light. In addition, when the volume of the light emitting device 50 is small, the volume of the quantum dot 41 in the excitation cavity 60 will increase, so that the light emitted by the light emitting device 50 is easier to excite the quantum dot 41 to emit light, and reduce the possibility of the light emitted by the light emitting device 50 that does not excite the quantum dot 41 to emit light to reflect back and forth in the excitation cavity 60, thereby reducing the optical path travel of the light emitted by the light emitting device 50 before exciting the quantum dot 41 to emit light, thereby reducing the attenuation of the light emitted by the light emitting device 50, improving the efficiency of the light emitted by the light emitting device 50 to excite the quantum dot 41 to emit light, and improving the brightness of the display light of the display panel 100, thereby improving the display effect of the display panel 100.

[0063] Fig. 9 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0064] Further, refer to Fig. 9The reflective portion 61 includes: a first reflective portion 63, located at a side of the first protrusion 31 away from the first substrate 10, at least a portion of the first reflective portion 63 covers the first protrusion 31, and at least a portion of the first reflective portion 63 covers at least a portion of the first substrate 10; a second reflective portion 64, located at a side of the second protrusion 32 away from the second substrate 20, at least a portion of the second reflective portion 64 covers the second protrusion 32, and at least a portion of the second reflective portion 64 covers at least a portion of the second substrate 20. The first reflective portion 63 covers the first protrusion 31, and the second reflective portion 64 covers the second protrusion 32. On the premise of ensuring that the reflective portion 61 reflects the light in the excitation cavity 60, the manufacturing of the reflective portion 61 is also convenient. During the manufacturing process, a first protrusion 31 is manufactured on the first substrate 10, and then a first reflecting portion 63 is manufactured so that the first reflecting portion 63 covers the first protrusion 31 and a portion of the first substrate 10; a second protrusion 32 is manufactured on the second substrate 20, and then a second reflecting portion 64 is manufactured so that the second reflecting portion 64 covers the second protrusion 32 and a portion of the second substrate 20; quantum dots are added in the area enclosed by the first protrusion 31 or in the area enclosed by the second protrusion 32; frame glue is applied to the end surface of the first protrusion 31 facing away from the first substrate 10 or the end surface of the second protrusion 32 facing away from the second substrate 20; the first protrusion 31 and the second protrusion 32 are aligned so that the first protrusion 31 and the second protrusion 32 are fitted together; and vacuum is drawn so that the first protrusion 31 and the second protrusion 32 are adhered and fitted together to form an excitation cavity 60. The partial first reflective portion 63 covering the side wall of the first protrusion 31, the partial second reflective portion 64 covering the side wall of the second protrusion 32, the partial first reflective portion 63 covering the portion of the first substrate 10 and the partial second reflective portion 64 covering the second substrate 20 together form the reflective portion 61 of the side wall of the excitation cavity 60.

[0065] Fig.10 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application. Fig.11 for Fig.10 The B area shown is a partial enlarged view of a display panel in an embodiment of the present application.

[0066] Further, refer to Fig.10 and Fig.11 The first substrate 10 includes: a first metal layer 11, located between the light emitting device 50 and the first substrate 10; at least part of the first reflective portion 63 is disposed in the same layer as the first metal layer 11. Exemplarily, the display panel 100 may further include an array layer, and the first metal layer 11 is at least a part of the array layer, for example, the first metal layer 11 may be a scan line layer or a data line layer.

[0067] Taking the first metal layer 11 as a scan line layer as an example, the array layer also includes a thin film transistor structure (Thin Film Transistor, TFT), and the display panel 100 controls the light emitting device 50 to emit light through the thin film transistor structure. The thin film transistor structure includes an active layer 17 for forming a thin film transistor, the active layer 17 includes a source region and a drain region formed by doping N-type impurity ions or P-type impurity ions, and a channel region between the source region and the drain region; an insulating layer 18 located on the active layer 17; and a gate 16C of the thin film transistor located on the insulating layer 18, and the gate 16C is arranged in the same layer as the first metal layer 11. The source 16A and the drain 16B of the thin film transistor are located on the insulating layer 17. The source 16A and the drain 16B are electrically connected (or combined) to the source region and the drain region respectively through contact holes, and the contact holes are formed by selectively removing the insulating layer 18. The drain 16B is electrically connected to the anode of the light emitting device 50 through the bonding layer 14. The display panel 100 also includes a cathode line 15, which is electrically connected to the cathode of the light-emitting device 50 through a bonding layer 14. The bonding layer 14 connecting the cathode and the anode of the light-emitting device 50 is insulated. The display panel 100 also includes an insulating protective layer 13, and the first protrusion 31 and the first reflective layer 63 are both arranged on the side of the insulating protective layer 13 away from the first substrate 10. Considering the reflective characteristics of the first reflective portion 63, the first reflective portion 63 can be made of a metal material. When the first reflective portion 63 is made of a metal material, the first reflective portion 63 can be reused on the same layer with the first metal layer 11 to simplify the complexity of the wiring design of the first metal layer 11 and reduce the thickness of the display panel 100.

[0068] Further, continue to refer to Fig.10 and Fig.11 , the first metal layer 11 includes: a signal line 12, at least part of the first reflective portion 63 is multiplexed as the signal line 12; the first reflective portion 63 and the second reflective portion 64 are insulated. When the first metal layer 11 and part of the first reflective portion 63 are multiplexed on the same layer, the first reflective portion 63 can be used as the signal line 12 on the first metal layer 11. Part of the first reflective portion 63 covers the first substrate 10, so the part of the first reflective layer covering the first substrate 10 can be multiplexed as the signal line 12 of the first metal layer 11. Since the cross-sectional area of ​​the first reflective portion 63 is larger than the cross-sectional area of ​​the signal line 12, when the first reflective portion 63 is multiplexed as the signal line 12, the cross-sectional area of ​​the signal line 12 will become larger, so that the actual impedance of the signal line 12 becomes smaller, thereby reducing the signal attenuation caused by the signal line 12 and the power consumption of the signal line 12, so that the display light control of the display panel 100 is more accurate, and the display effect of the display panel 100 is improved. When the first metal layer 11 is a scan line layer, the signal line 12 is a scan line; when the first metal layer 11 is a data line layer, the signal line 12 is a data line.

[0069] Continue to refer Fig.10 and Fig.11 , an insulating structure 33 is provided at the connection between the first protrusion 31 and the second protrusion 32. The insulating structure 33 penetrates the first reflective portion 63 and the second reflective portion 64 along the thickness direction of the display panel 100. The insulating structure 33 is arranged around the excitation cavity 60. At least part of the first reflective portion 63 and at least part of the second reflective portion 64 are located in the area surrounded by the insulating structure 33. The first reflective portion 63 located in the area surrounded by the insulating structure 33 is reused as a part of the signal line 12. Since the isolation structure 30 is a structure extending in the plane where the display panel 100 is located, the excitation cavity 60 is equivalent to a through structure formed on the isolation structure 30. Therefore, the first reflective portion 63 and the second reflective portion 64 are also a structure extending in the plane where the display panel 100 is located. When the first reflective portion 63 is reused as the signal line 12, the insulating structure 33 can separate the first reflective portion 63 based on the area corresponding to the excitation cavity 60, so that the first reflective portions 63 corresponding to the adjacent excitation cavities 60 can be insulated from each other, thereby preventing the short circuit between the signal lines 12 reused by the first reflective portions 63 corresponding to the adjacent excitation cavities 60. That is, the insulating structure 33 can divide the first reflective portion 63 into a plurality of array portions, and each portion of the first reflective portion 63 is insulated from the other. The insulating structure 33 is disposed at the connection between the first protrusion 31 and the second protrusion 32, so that the insulating structure 33 does not destroy the reflection function of the first reflective portion 63 and the second reflective portion 64 in a single excitation cavity 60.

[0070] Fig.12 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application. Fig.13 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0071] Further, refer to Fig.12 and Fig.13The display panel 100 of the embodiment of the present application further includes: a color resist layer 70, which is located on the side of the second substrate 20 facing the first substrate 10, and the color resist layer 70 includes a plurality of color resist units 71, and the color resist units 71 cover the light outlet 62; the color resist units 71 correspond to the quantum dots 41 one by one, and the color of the excitation light of the quantum dots 41 is the same as the color of the corresponding color resist units 71. The color resist layer 70 is used to filter the light emitted from the light outlet 62. The color resist units 71 correspond to the quantum dots 41 one by one, that is, the color of the color resist units 71 is the same as the color of the light emitted by the corresponding quantum dots 41. Considering that a small amount of light emitted by the light emitting device 50 will be directly emitted from the light outlet 62 without exciting the quantum dots 41 to emit light, the color resist units 71 can filter out this small amount of light emitted by the light emitting device 50. Thereby, the crosstalk of the light emitted by the light emitting device 50 to the light emitted by the excitation of the quantum dots 41 is further reduced, so that the color purity of the light emitted from the light outlet 62 is higher. In addition, considering that the light emitting device 50 may emit blue light or ultraviolet light, the color resistance unit 71 can filter it out, thereby reducing the damage of the blue light or ultraviolet light to the user's eyes.

[0072] Optionally, continue to refer to Fig.12 and Fig.13 The color resist unit 71 can be located between the reflective portion 61 and the second substrate 20, or between the reflective portion 61 and the quantum dot 41, that is, the reflective portion 61 is located between the color resist unit 71 and the second substrate 20. When the color resist unit 71 is located between the reflective portion 61 and the second substrate 20, during the manufacturing process, the second protrusion 32 of the isolation structure 30 is first manufactured on the second substrate 20, and then the color resist unit 71 is manufactured in the space surrounded by the second protrusion 32, and then the second reflective portion 64 of the reflective portion 61 is manufactured, and then the first substrate 10 with the first protrusion 31 and the first reflective portion 63 is buckled and connected to form the excitation cavity 60. When the reflective portion 61 is located between the color resist unit 71 and the second substrate 20, during the manufacturing process, the second protrusion 32 of the isolation structure 30 is first manufactured on the second substrate 20, and then the second reflective portion 64 of the reflective portion 61 is manufactured, and then the color resist unit 71 is manufactured in the space surrounded by the second protrusion 32 covering the second reflective portion 64, and then the first substrate 10 manufactured with the first protrusion 31 and the first reflective portion 63 is snap-fitted and connected to form the excitation cavity 60.

[0073] Fig.14 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0074] Optionally, refer to Fig.14, at least one color resist unit 71 is located between the reflective portion 61 and the second substrate 20, and at least one color resist unit 71 is located between the quantum dot layer 40 and the reflective portion 61. When the color of the light emitted by the light emitting device 50 is the same as the color of the light emitted by the quantum dot 41, the corresponding excitation cavity 60 may not be provided with a color resist unit 71 of the corresponding color, so that more light can be emitted from the light outlet 62 to improve the brightness of the display panel 100. For example, when the pixel units 110 of the display panel 100 first emit red light, green light and blue light respectively, since the light emitted by the light emitting device 50 of a certain blue pixel unit 110 is blue, the color resist unit 71 of the corresponding color may be provided only in the excitation cavity 60 corresponding to the red and green pixel units 110, and the blue color resist unit 71 may not be provided in the excitation cavity 60 corresponding to the blue pixel, so that the display of blue can be enhanced to balance the poor sensitivity of people to blue, thereby enhancing the display effect of the display panel 100.

[0075] Further, continue to refer to Fig.14 The color resist unit 71 contains scattering particles. After the scattering particles are added to the color resist unit 71, the color resist unit 71 can not only filter out the heterochromatic light, but also scatter the light, thereby reducing the thickness of the display panel 100 while enabling the display panel 100 to obtain a larger viewing angle.

[0076] Fig.15 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0077] Further, refer to Fig.15 The display panel 100 of the embodiment of the present application further includes: a scattering layer 80, which is located on the side of the second substrate 20 facing the first substrate 10, and at least part of the scattering layer 80 is located between the color resistance unit 71 and the second substrate 20. After the light emitted by the quantum dot 41 is reflected in the excitation cavity 60, it is emitted from the light outlet 62 at a smaller scattering angle. The scattering layer 80 can scatter the light emitted from the light outlet 62 to obtain a larger scattering angle, so that the display panel 100 obtains a larger viewing angle range.

[0078] Fig.16 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0079] Further, refer to Fig.16The display panel 100 of the embodiment of the present application further includes: a touch layer 90, at least part of which is located on the side of the isolation structure 30 away from the first substrate 10; a touch signal line 91, which is electrically connected to the touch layer 90 and is located between the touch layer 90 and the first substrate 10; at least part of the first reflective portion 63 or at least part of the second reflective portion 64 is reused as at least part of the touch signal line 91; and the first reflective portion 63 and the second reflective portion 64 are insulated from each other. When the display panel 100 is a touch display panel 100, the touch panel is disposed in the display panel 100 in an embedded manner.

[0080] The touch layer 90 includes a touch electrode for generating capacitance to detect the position of the touch. The touch layer 90 is located on the side of the isolation structure 30 away from the first substrate 10, so that the second substrate 20 can also protect the touch layer 90. The touch layer 90 is usually made of a transparent indium tin oxide (ITO) material to reduce the impact on the display luminescence. The touch signal line 91 is electrically connected to the touch electrode of the touch layer 90 to transmit the change of capacitance in the form of an electrical signal. When the user touches the display panel 100, the finger touches the display panel 100. Since the human body is a conductor, a capacitance is formed between the touch electrode of the touch layer 90. The change in capacitance will be led out through the touch signal line 91 in the form of an electrical signal. By detecting the signal led out of the touch signal line 91, the position of the touch electrode that forms a capacitance with the finger can be determined, thereby reflecting the position of the finger touching the display panel 100. The corresponding relationship between the touch electrode and the pixel unit 110 of the display panel 100 is not limited, and one touch electrode can correspond to multiple pixel units 110.

[0081] Considering the reflective characteristics of the second reflective portion 64, the second reflective portion 64 may be made of a metal material. When the second reflective portion 64 is made of a metal material, the second reflective portion 64 may be reused with the touch signal line 91 to simplify the complexity of the touch signal line 91 routing design and reduce the thickness of the display panel 100. The first reflective portion 63 and the second reflective portion 64 are insulated to prevent the first reflective portion 63 from causing a short circuit in the touch signal line 91 reused with the second reflective portion 64.

[0082] Further, continue to refer to Fig.16, an insulating structure 33 is provided at the connection between the first protrusion 31 and the second protrusion 32. The insulating structure 33 penetrates the second reflective portion 64 along the thickness direction of the display panel 100. The insulating structure 33 is arranged around the excitation cavity 60. At least part of the second reflective portion 64 is located in the area surrounded by the insulating structure 33. The second reflective portion 64 located in the area surrounded by the insulating structure 33 is reused as a part of the touch signal line 91. Since the isolation structure 30 is a structure extending in the plane where the display panel 100 is located, the excitation cavity 60 is equivalent to a through structure formed on the isolation structure 30. Therefore, the first reflective portion 63 and the second reflective portion 64 are also structures extending in the plane where the display panel 100 is located. When the second reflective portion 64 is reused as the touch signal line 91, the insulating structure 33 can prevent the second reflective portion 64 from causing a short circuit between adjacent touch signal lines 91. The insulating structure 33 is arranged at the connection between the first protrusion 31 and the second protrusion 32, so that the insulating structure 33 does not destroy the reflection function of the first reflective portion 63 and the second reflective portion 64 in a single excitation cavity 60.

[0083] Fig.17 for Figure 2 The AA section shown is a cross-sectional view of another display panel in an embodiment of the present application.

[0084] Further, refer to Fig.17 , the display panel 100 of the embodiment of the present application further includes: a color resist layer 70, located between the touch layer 90 and the second substrate 20, the color resist layer 70 includes a plurality of color resist units 71 and a black matrix 72 surrounding the color resist units 71, the orthographic projection of the light outlet 62 on the second substrate 20 overlaps at least partially with the orthographic projection of the color resist unit 71 on the second substrate 20; the color resist unit 71 corresponds to the quantum dot 41 one by one, and the color of the excitation light of the quantum dot 41 is the same as the color of the corresponding color resist unit 71. Considering that a small amount of light emitted by the light emitting device 50 will be directly emitted from the light outlet 62 without exciting the quantum dot 41 to emit light, the color resist unit 71 can filter out this small amount of light emitted by the light emitting device 50. Thereby further reducing the crosstalk of the light emitted by the light emitting device 50 to the light emitted by the excitation of the quantum dot 41, so that the color purity of the light emitted from the light outlet 62 is higher. In addition, considering that the light emitting device 50 will emit blue light or ultraviolet light, the color resist unit 71 can filter it out to reduce the damage of the blue light or ultraviolet light to the user's eyes. The black matrix 72 is made of a light shielding material to prevent the light emitted from a certain color-resistance unit 71 from causing crosstalk to the light emitted from an adjacent color-resistance unit 71 .

[0085] To summarize, the embodiment of the present application provides a display panel, which forms an excitation cavity around a quantum dot through an isolation structure, and a reflective portion is provided on the inner wall of the excitation cavity, so that the light emitted by the light emitting device can be reflected in the excitation cavity and used to excite the quantum dots to emit light. The light emitted by the quantum dots will also be reflected in the excitation cavity and emitted from the light outlet and used to display the light, thereby avoiding crosstalk between lights of different colors, so that the color purity of the light displayed is higher, and the display of the display panel is more accurate and realistic, thereby enhancing the display effect of the display panel.

[0086] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: include: A first substrate and a second substrate, and an isolation structure and a plurality of light emitting devices located between the first substrate and the second substrate; The second substrate and the first substrate are both connected to the isolation structure, the first substrate, the isolation structure and the first substrate form a plurality of excitation cavities, and the light-emitting devices are located in the excitation cavities; a quantum dot layer, comprising quantum dots, located in the excitation cavity and on a side of the light-emitting device facing away from the first substrate; A reflective portion is provided on the side wall of the excitation cavity, at least part of the reflective portion covers at least part of the first substrate and at least part of the second substrate, and a light outlet is provided on a side of the reflective portion close to the second substrate.

2. The display panel according to claim 1, characterized in that: The excitation cavity corresponds to the light emitting device one by one.

3. The display panel according to claim 1, characterized in that: The isolation structure is disposed on the first substrate and extends toward the second substrate; or, the isolation structure is disposed on the second substrate and extends toward the first substrate.

4. The display panel according to claim 1, characterized in that: The isolation structure comprises: A first protrusion, disposed on the first substrate; A second protrusion is arranged along the second substrate; In a direction perpendicular to the first substrate, projections of the first protrusion and the second protrusion at least partially overlap.

5. The display panel according to claim 4, characterized in that: Along the thickness direction of the display panel, a ratio of a height of the first protrusion to a height of the second protrusion is greater than or equal to 1:2 and less than or equal to 2:

1.

6. The display panel according to claim 4, characterized in that: Along the direction from the first substrate to the second substrate, the cross-sectional area of ​​the first protrusion gradually decreases; along the direction from the second substrate to the first substrate, the cross-sectional area of ​​the second protrusion gradually decreases.

7. The display panel according to claim 6, characterized in that: The light emitting device comprises a light emitting surface, and a connection point between the first protrusion and the second protrusion is coplanar with the light emitting surface.

8. The display panel according to claim 4, characterized in that: The volume of the light-emitting device is less than or equal to 2 / 3 of the volume of the corresponding excitation cavity.

9. The display panel according to claim 8, characterized in that: Along the thickness direction of the display panel, the height of the light emitting device is less than or equal to 2 / 3 of the height of the excitation cavity.

10. The display panel according to claim 4, characterized in that: The reflecting portion comprises: A first reflective portion, located at a side of the first protrusion away from the first substrate, wherein at least a portion of the first reflective portion covers the first protrusion, and at least a portion of the first reflective portion covers at least a portion of the first substrate; The second reflective portion is located on a side of the second protrusion away from the second substrate, and at least a portion of the second reflective portion covers the second protrusion, and at least a portion of the second reflective portion covers at least a portion of the second substrate.

11. The display panel according to claim 10, characterized in that: The first substrate comprises: A first metal layer, located between the light emitting device and the first substrate; At least part of the first reflective portion is disposed on the same layer as the first metal layer.

12. The display panel according to claim 11, characterized in that: The first metal layer comprises: A signal line, at least a portion of the first reflecting part is multiplexed as the signal line; the first reflecting part and the second reflecting part are insulated from each other.

13. The display panel according to claim 12, characterized in that: An insulating structure is provided at the connection between the first protrusion and the second protrusion. The insulating structure penetrates the first reflecting part and the second reflecting part along the thickness direction of the display panel. The insulating structure is arranged around the excitation cavity. At least part of the first reflecting part and at least part of the second reflecting part are located in the area surrounded by the insulating structure. The first reflecting part located in the area surrounded by the insulating structure is reused as a part of the signal line.

14. The display panel according to claim 10, characterized in that: Also includes: a touch layer, at least a portion of which is located on a side of the isolation structure away from the first substrate; A touch signal line, electrically connected to the touch layer, and the touch signal line is located between the touch layer and the first substrate; At least a portion of the first reflective portion or at least a portion of the second reflective portion is reused as at least a portion of the touch signal line; the first reflective portion and the second reflective portion are insulated from each other.

15. The display panel according to claim 14, characterized in that: An insulating structure is provided at the connection between the first protrusion and the second protrusion. The insulating structure penetrates the second reflecting portion along the thickness direction of the display panel. The insulating structure is arranged around the excitation cavity. At least part of the second reflecting portion is located in the area surrounded by the insulating structure. The second reflecting portion located in the area surrounded by the insulating structure is reused as a part of the touch signal line.

16. The display panel according to claim 14, characterized in that: Also includes: A color resist layer is located between the touch layer and the second substrate, the color resist layer includes a plurality of color resist units and a black matrix surrounding the color resist units, the orthographic projection of the light outlet on the second substrate and the orthographic projection of the color resist unit on the second substrate at least partially overlap; the color resist units correspond to the quantum dots one by one, and the color of the excitation light of the quantum dots is the same as the color of the corresponding color resist units.

17. The display panel according to claim 1, characterized in that: Also includes: The scattering layer is located on a side of the second substrate facing the first substrate, and at least a portion of the scattering layer covers the light exit.

18. The display panel according to claim 1, characterized in that: Also includes: The color resist layer is located on the side of the second substrate facing the first substrate, and the color resist layer includes a plurality of color resist units, and the color resist units cover the light outlet; the color resist units correspond to the quantum dots one by one, and the color of the excitation light of the quantum dots is the same as the color of the corresponding color resist units.

19. The display panel according to claim 18, characterized in that: The color resistance unit is located between the reflective portion and the second substrate.

20. The display panel according to claim 18, characterized in that: At least a portion of the reflective portion is located between the color resistance unit and the second substrate.

21. The display panel according to claim 18, characterized in that: At least one of the color resistance units is located between the reflective portion and the second substrate, and at least one of the color resistance units is located between the quantum dot layer and the reflective portion.

22. The display panel according to claim 18, characterized in that: Also includes: The scattering layer is located on a side of the second substrate facing the first substrate, and at least a portion of the scattering layer is located between the color resistance unit and the second substrate.

23. The display panel according to claim 18, characterized in that: The color resistance unit contains scattering particles.

24. A display device, characterized in that: A display panel comprising any one of claims 1 to 23.

Images