Display panel and display device

Abstract

The application discloses a display panel and a display device, and relates to the technical field of display panels, and specifically discloses a display panel comprising: a light-emitting unit; a barrier wall arranged along a first direction with the light-emitting unit, and a top surface of the light-emitting unit being a first end surface; an included angle between a first side wall of the light-emitting unit facing the barrier wall and the first end surface being a first included angle; the light-emitting unit comprising a second side wall, and an included angle between the second side wall and the first end surface being a second included angle; and the first included angle of the first light-emitting unit being greater than the second included angle of the first light-emitting unit. The brightness attenuation degree of the first light-emitting unit along the first direction is adjusted through the barrier wall, and the brightness attenuation degree of the first light-emitting unit along the second direction is adjusted through the second side wall, so that the light shape of the first light-emitting unit is improved, the light-emitting effect of the first light-emitting unit under different viewing angles is avoided from being different, and the problem of color deviation under different viewing angles during light mixing is avoided.

Description

Technical Field

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

[0002] A light-emitting diode (LED) is a semiconductor solid-state light-emitting electronic component. It is characterized by its small size, high brightness, low power consumption, and long lifespan, and is widely used in display panels, backlights, lighting, and other display applications. When LEDs are used in display panels, it is typically necessary to manufacture red LEDs that emit red light, blue LEDs that emit blue light, and green LEDs that emit green light. These LEDs are then combined to form a minimum display unit, and colored light emission is achieved by mixing red, blue, and green light.

[0003] White light is obtained by mixing red, blue, and green light in a certain proportion. Due to differences in materials and manufacturing processes among red, blue, and green LEDs, the light patterns emitted by these LEDs diverge to varying degrees. This means that the brightness of these LEDs decreases at different rates as the viewing angle changes. Consequently, when displaying a white image, the proportions of red, blue, and green light differ at different viewing angles, resulting in color shifts in the white light at different viewing angles.

[0004] Therefore, there is an urgent need for a design that can make the light emission patterns of red, blue, and green LEDs more consistent. Summary of the Invention

[0005] In view of this, the present invention provides a display panel and a display device.

[0006] In one aspect, the present invention provides a display panel, comprising:

[0007] substrate;

[0008] The light-emitting unit is located on one side of the substrate;

[0009] A barrier wall is located on the same side of the substrate as the light-emitting unit; the light-emitting unit and the barrier wall are arranged along a first direction, and the light-emitting unit includes a first end face and a second end face that are opposite each other in a direction perpendicular to the plane of the substrate, and the first end face is located on the side of the second end face away from the substrate;

[0010] The light-emitting unit includes a first sidewall facing the retaining wall, and the angle between the first sidewall and the first end face is a first angle; the light-emitting unit includes a second sidewall and a third sidewall disposed opposite to each other in a second direction, and the angle between the second sidewall and the first end face is a second angle, and the second direction intersects the first direction;

[0011] The light-emitting unit includes a first light-emitting unit, wherein the first included angle of the first light-emitting unit is greater than the second included angle of the first light-emitting unit.

[0012] On the other hand, the present invention also provides a display device including the above-described display panel.

[0013] Compared with the prior art, the display panel provided by the present invention achieves at least the following beneficial effects:

[0014] The display panel provided by the present invention includes a substrate; a light-emitting unit located on one side of the substrate; and a baffle wall located on the same side of the substrate as the light-emitting unit. The light-emitting unit and the baffle wall are arranged along a first direction. The light-emitting unit includes a first end face and a second end face that are opposite each other in a direction perpendicular to the plane of the substrate. The first end face is located on the side of the second end face that is away from the substrate. The light-emitting unit includes a first sidewall facing the baffle wall. The angle between the first sidewall and the first end face is a first angle. The light-emitting unit includes a second sidewall and a third sidewall that are opposite each other in a second direction. The angle between the second sidewall and the first end face is a second angle. The second direction intersects the first direction. The light-emitting unit includes a first light-emitting unit. The first angle of the first light-emitting unit is greater than the second angle of the first light-emitting unit. The first sidewall of the first light-emitting unit faces the baffle wall. When the light emitted by the first light-emitting unit is incident on the baffle wall through the first sidewall, the light is reflected on the surface of the baffle wall. The direction of light propagation will be shifted towards a direction closer to the plane perpendicular to the substrate, thus exiting the display panel. At the same time, the second sidewall of the first light-emitting unit forms a second angle with the first end face. Some of the large-angle light rays inside the first light-emitting unit will be reflected on the surface of the second sidewall. After reflection, the direction of propagation of the large-angle light rays will also be shifted towards a direction closer to the plane perpendicular to the substrate, thus exiting the first light-emitting unit. Through this design, the brightness attenuation of the first light-emitting unit in the first and second directions is changed, avoiding different light emission effects of the first light-emitting unit at different viewing angles and preventing color shift problems at different viewing angles during light mixing.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0016] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0018] Figure 1 This is a plan view of a display panel provided by the present invention;

[0019] Figure 2 yes Figure 1 A cross-sectional view along line A-A' in the middle;

[0020] Figure 3 yes Figure 1 A cross-sectional view along the B-B' direction;

[0021] Figure 4 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0022] Figure 5 yes Figure 1 Another cross-sectional view along the B-B' direction;

[0023] Figure 6 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0024] Figure 7 yes Figure 1 Another cross-sectional view along the B-B' direction;

[0025] Figure 8 This is a plan view of another display panel provided by the present invention;

[0026] Figure 9 This is a plan view of another display panel provided by the present invention;

[0027] Figure 10 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0028] Figure 11 yes Figure 8 A cross-sectional view along the C-C' direction;

[0029] Figure 12 yes Figure 8 Another cross-sectional view along the C-C' direction;

[0030] Figure 13 yes Figure 1 A cross-sectional view along the D-D' direction;

[0031] Figure 14 yes Figure 8 Another cross-sectional view along the C-C' direction;

[0032] Figure 15yes Figure 1 Another cross-sectional view along the D-D' direction;

[0033] Figure 16 yes Figure 1 A cross-sectional view along the E-E' direction;

[0034] Figure 17 yes Figure 1 Another cross-sectional view along the D-D' direction;

[0035] Figure 18 yes Figure 1 A cross-sectional view along the F-F' direction;

[0036] Figure 19 yes Figure 1 Another cross-sectional view along the F-F' direction;

[0037] Figure 20 yes Figure 1 Another cross-sectional view along the F-F' direction;

[0038] Figure 21 yes Figure 1 Another cross-sectional view along the F-F' direction;

[0039] Figure 22 These are comparison images of the light pattern before and after adjustment provided by this invention;

[0040] Figure 23 This is a schematic diagram of a display device provided by the present invention. Detailed Implementation

[0041] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0042] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0043] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0044] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0046] Reference Figures 1 to 7 , Figure 1 This is a plan view of a display panel provided by the present invention. Figure 2 yes Figure 1 A cross-sectional view along line A-A'. Figure 3 yes Figure 1 A cross-sectional view along the B-B' direction. Figure 4 yes Figure 1 Another cross-sectional view along the A-A' direction. Figure 5 yes Figure 1 Another cross-sectional view along the B-B' direction. Figure 6 yes Figure 1 Another cross-sectional view along the A-A' direction. Figure 7 yes Figure 1 Another cross-sectional view along line B-B' is provided to illustrate a specific embodiment of the display panel 100 provided by the present invention, including:

[0047] substrate01;

[0048] Light-emitting unit 02 is located on one side of substrate 01;

[0049] The barrier 03 is located on the same side of the substrate 01 as the light-emitting unit 02; the light-emitting unit 02 and the barrier 03 are arranged along the first direction X. The light-emitting unit 02 includes a first end face 04 and a second end face 05 that are opposite each other in the direction perpendicular to the plane of the substrate 01. The first end face 04 is located on the side of the second end face 05 away from the substrate 01.

[0050] The light-emitting unit 02 includes a first sidewall 06 facing the retaining wall 03, and the angle between the first sidewall 06 and the first end face 04 is a first angle γ1; the light-emitting unit 02 includes a second sidewall 07 and a third sidewall 08 disposed opposite each other in the second direction Y, and the angle between the second sidewall 07 and the first end face 04 is a second angle γ2, and the second direction Y intersects the first direction X.

[0051] The light-emitting unit 02 includes a first light-emitting unit 021, wherein the first included angle γ1 of the first light-emitting unit 021 is greater than the second included angle γ2 of the first light-emitting unit 021.

[0052] It should be noted that, in Figures 2 to 7 In this paper, the substrate 01 is not patterned. The light-emitting unit 02 can be a micro-LED or a mini-LED; no specific limitation is made here. The structure of the light-emitting unit 02 can be a right-mounted structure, a flip-chip structure, or a vertical structure. Figure 2 and Figure 3 The diagram illustrates that the structure of the light-emitting unit 02 is an inverted structure. Figure 4 and Figure 5 The diagram shows that the light-emitting unit 02 has a standard mounting structure. Figure 6 and Figure 7 The diagram shows that the light-emitting unit 02 has a vertical structure, as shown in the reference diagram. Figure 2 and Figure 3 ,exist Figure 3 The diagram only shows the first light-emitting unit 021 with its cross-section along the B-B' direction passing through the P-type electrode 14, illustrating the flip-chip structure light-emitting unit 02. It includes a stacked N-type gallium nitride layer 09, a light-emitting layer 10, a P-type gallium nitride layer 11, and a sapphire layer 12. An N-type electrode 13 connects to the N-type gallium nitride layer 09, and a P-type electrode 14 connects to the P-type gallium nitride layer 11. The P-type gallium nitride layer 11 is located on the side of the N-type gallium nitride layer 09 closest to the substrate 01. The N-type electrode 13 is located between the N-type gallium nitride layer 09 and the substrate 01, and the P-type electrode 14 is located between the P-type gallium nitride layer 11 and the substrate 01. (See reference...) Figure 4 and Figure 5 ,exist Figure 5 The diagram only shows the first light-emitting unit 021 with its cross-section along the B-B' direction passing through the N-type electrode 13, illustrating the upright structure of the light-emitting unit 02. This unit includes a stacked N-type gallium nitride layer 09, a light-emitting layer 10, and a P-type gallium nitride layer 11. The N-type electrode 13 connects to the N-type gallium nitride layer 09, and the P-type electrode 14 connects to the P-type gallium nitride layer 11. The N-type gallium nitride layer 09 is located on the side of the P-type gallium nitride layer 11 closest to the substrate 01, the N-type electrode 13 is located on the side of the N-type gallium nitride layer furthest from the substrate 01, and the P-type electrode 14 is located on the side of the P-type gallium nitride layer furthest from the substrate 01. (Refer to...) Figure 6 and Figure 7 ,exist Figure 7 The diagram only shows the first light-emitting unit 021 in cross-section along the B-B' direction, passing through the N-type electrode 13 and the P-type electrode 14, to illustrate the vertical structure of the light-emitting unit 02. It includes a stacked N-type gallium nitride layer 09, a light-emitting layer 10, and a P-type gallium nitride layer 11. The N-type electrode 13 is connected to the N-type gallium nitride layer 09, and the P-type electrode 14 is connected to the P-type gallium nitride layer 11. The N-type gallium nitride layer 09 is located on the side of the P-type gallium nitride layer 11 closer to the substrate 01. The N-type electrode 13 is located between the N-type gallium nitride layer 09 and the substrate 01. The P-type electrode 14 is located on the side of the P-type gallium nitride layer 11 away from the substrate 01. The display panel 100 can adopt a right-mounted structure, an inverted structure, or a vertical structure. This embodiment does not impose specific limitations on this. The light-emitting unit 02 is regarded as a whole, which includes a first sidewall 06, a second sidewall 07, and a third sidewall 08.

[0053] It is understood that the light-emitting unit 02 and the baffle wall 03 are arranged along the first direction X. The light-emitting unit 02 includes a first light-emitting unit 021. That is, the brightness attenuation of the first light-emitting unit 021 along the first direction X is adjusted by the baffle wall 03. Specifically, part of the light emitted from the first light-emitting unit 021 passes through the first sidewall 06 and is directed towards the baffle wall 03. It is reflected on the surface of the baffle wall 03, changing the direction of light propagation and causing the direction of light propagation to deflect in a direction perpendicular to the plane where the substrate 01 is located, thereby emitting the light. The light-emitting unit 02 includes a second sidewall 07 and a third sidewall 08 arranged opposite each other in the second direction Y. The angle between the second sidewall 07 and the first end face 04 is the second angle γ2. The brightness attenuation of the first light-emitting unit 021 along the second direction Y, which intersects with the first direction X, is adjusted by the second sidewall 07 and the third sidewall 08. Taking the adjustment of the brightness attenuation of the first light-emitting unit 021 along the second direction Y by the second sidewall 07 as an example, the angle between the second sidewall 07 and the first end face 04 is the second angle γ2, that is, the second sidewall 07 is inclined. When a portion of the large-angle light in the first light-emitting unit 021 is incident on the second sidewall 07, it is reflected on the surface of the second sidewall 07. The propagation direction of this portion of large-angle light after reflection is close to the direction perpendicular to the plane where the substrate 01 is located. Of course, the third sidewall 08, which is arranged opposite to the second sidewall 07, can also achieve the same technical effect. Simultaneously, the brightness attenuation of the first light-emitting unit 021 along the first direction X and the second direction Y is adjusted, thereby changing the light shape of the first light-emitting unit 021 so that the light-emitting effect of the first light-emitting unit 021 is the same at all angles. This can avoid the problem of color shift at different viewing angles when mixing light and improve the display effect. The above description only uses the first light-emitting unit 021 as an example, but it is not limited to this. It is applicable to any light-emitting unit 02 that needs to adjust its light shape.

[0054] The display panel 100 provided by the present invention includes a substrate 01; a light-emitting unit 02 located on one side of the substrate 01; and a barrier wall 03 located on the same side of the substrate 01 as the light-emitting unit 02. The light-emitting unit 02 and the barrier wall 03 are arranged along a first direction X. The light-emitting unit 02 includes a first end face 04 and a second end face 05 facing each other in a direction perpendicular to the plane of the substrate 01. The first end face 04 is located on the side of the second end face 05 away from the substrate 01. The light-emitting unit 02 includes a first sidewall 06 facing the barrier wall 03. The angle between the first sidewall 06 and the first end face 04 is a first angle γ1. The light-emitting unit 02 includes a second sidewall 07 and a third sidewall 08 arranged opposite each other in a second direction Y. The angle between the second sidewall 07 and the first end face 04 is a second angle γ2. The second direction Y intersects the first direction X. The light-emitting unit 02 includes a first light-emitting unit 021. The first angle γ1 of the first light-emitting unit 021 is greater than the second angle γ2 of the first light-emitting unit 021. The first sidewall 06 of the first light-emitting unit 021 faces the baffle wall 03. When the light emitted by the first light-emitting unit 021 is directed towards the baffle wall 03 through the first sidewall 06, the light is reflected on the surface of the baffle wall 03. The propagation direction of the light will be shifted towards a direction closer to the plane perpendicular to the substrate 01, thus exiting the display panel 100. At the same time, the second sidewall 07 of the first light-emitting unit 021 forms a second angle γ2 with the first end face 04. Some of the large-angle light rays inside the first light-emitting unit 021 will be reflected on the surface of the second sidewall 07. After reflection, the propagation direction of the large-angle light rays will also be shifted towards a direction closer to the plane perpendicular to the substrate 01, thus exiting the first light-emitting unit 021. Through this design, the brightness attenuation of the first light-emitting unit 021 in the first direction X and the second direction Y is changed, avoiding different light emission effects of the first light-emitting unit 021 at different viewing angles and preventing color shift problems at different viewing angles during light mixing.

[0055] In some alternative embodiments, refer to Figure 8 and Figure 9 , Figure 8 This is a plan view of another display panel provided by the present invention. Figure 9 This is a plan view of another display panel provided by the present invention. Figure 8 The image only illustrates that within a single pixel row, different pixels 15 correspond to different retaining walls 03. Figure 9 The image only illustrates that within a single pixel row, different pixels 15 correspond to the same retaining wall 03. Figure 8 and Figure 9 To illustrate a specific pixel design provided by the present invention, in Figure 8 and Figure 9The diagram only shows the light-emitting unit 02, which includes a first light-emitting unit 021, a second light-emitting unit 022, and a third light-emitting unit 023. The first light-emitting unit 021 emits blue light, the second light-emitting unit 022 emits green light, and the third light-emitting unit emits red light. The first light-emitting unit 021 and the second light-emitting unit 022 are arranged side by side along the second direction Y, and the third light-emitting unit 023 is arranged sequentially with the first light-emitting unit 021 along the first direction X. The extension direction of the short side of the first light-emitting unit 021 and the second light-emitting unit 022 is the same as the extension direction of the retaining wall 03. The length of the third light-emitting unit 023 is... The extension direction of the edge is the same as the extension direction of the baffle 03. The first light-emitting unit 021, the second light-emitting unit 022, and the third light-emitting unit 023 all have baffles 03 at corresponding positions on their end faces extending along the second direction Y. This arrangement reduces the number of baffles 03 within the display panel 100, thus reducing the area occupied by the baffles 03 and preventing an excessive number of baffles 03 from affecting the pixel density of the display panel 100. However, this is not a limitation; the arrangement of the light-emitting units 02, the position, number, shape, and size of the baffles can be adjusted according to actual needs. This embodiment does not impose specific limitations in this regard. In some optional embodiments, refer to... Figure 1 , Figure 2 , Figure 3 and Figure 10 , Figure 18 yes Figure 1 Another cross-sectional view along the A-A' direction, where the first included angle γ1 of the first light-emitting unit 021 is a right angle and the second included angle γ2 of the first light-emitting unit 021 is an acute angle; or, the first included angle γ1 of the first light-emitting unit 021 is an acute angle and the second included angle γ2 of the first light-emitting unit 021 is an acute angle.

[0056] It is understandable that Figure 810 only illustrates the first light-emitting unit 021 as an inverted structure; however, it is not limited to this. Figure 2 The diagram only illustrates that the first included angle γ1 of the first light-emitting unit 021 is a right angle, meaning that the plane of the first sidewall 06 is perpendicular to the plane of the substrate 01. When large-angle light rays inside the first light-emitting unit 021 strike the first sidewall 06, they are reflected off the surface of the first sidewall 06 and do not exit in a direction perpendicular to the plane of the substrate 01. Therefore, when the plane of the first sidewall 06 is perpendicular to the plane of the substrate 01, the first sidewall 06 has no effect on adjusting the light pattern of the first light-emitting unit 021. Instead, the light pattern of the first light-emitting unit 021 is adjusted by the baffle 03 facing the first sidewall 06. The degree of brightness attenuation of the first light-emitting unit 021 along the first direction X by the baffle 03 has been specifically described above, and will not be repeated in this embodiment. (Refer to...) Figure 3The second included angle γ2 of the first light-emitting unit 021 is an acute angle, that is, the second sidewall 07 is inclined. The adjustment of the brightness attenuation of the first light-emitting unit 021 along the second direction Y by the second sidewall 07 has been specifically described above, and will not be repeated in this embodiment. Figure 2 and Figure 3 The structure shown adjusts the light pattern of the first light-emitting unit 021 through the baffle 03, the second sidewall 07, and the third sidewall 08. When the second sidewall 07 and the third sidewall 08 simultaneously adjust the brightness attenuation of the first light-emitting unit 021 along the second direction Y, it is preferable that the second sidewall 07 and the third sidewall 08 are symmetrically arranged along the second direction Y for ease of manufacturing. This also makes the adjustment of the brightness attenuation of the first light-emitting unit 021 along the second direction Y more uniform. Along the direction perpendicular to the plane of the substrate 01, the distance between the second sidewall 07 and the third sidewall 08 continuously increases. Figure 3 The diagram only shows that the second sidewall 07 and the third sidewall 08 are planar. Of course, the cross-sections of the second sidewall 07 and the third sidewall 08 can also be curved surfaces, as long as they can reflect large-angle light rays and reflect large-angle light rays to small-angle light rays. This embodiment does not impose specific restrictions on this.

[0057] exist Figure 10 The diagram only shows that the first included angle γ1 of the first light-emitting unit 021 is an acute angle, meaning that the first sidewall 06 of the first light-emitting unit 021 is inclined. This allows some high-angle light rays within the first light-emitting unit 021 to be reflected when they strike the first sidewall 06. After reflection by the first sidewall 06, the propagation direction of these high-angle light rays deflects towards a direction perpendicular to the plane of the substrate 01. In other words, the first sidewall 06 can also adjust the degree of brightness attenuation of the first light-emitting unit 021 along the first direction X. The first light-emitting unit 021 also includes a fourth sidewall 19 disposed opposite to the first sidewall 06. Preferably, the first sidewall 06 and the fourth sidewall 19 are symmetrically arranged along the first direction X for ease of manufacturing and to more uniformly adjust the degree of brightness attenuation of the first light-emitting unit 021 along the first direction X. Figure 8 The structure shown adjusts the light pattern of the first light-emitting unit 021 through the joint action of the barrier wall 03, the first side wall 06, the second side wall 07, the third side wall 08, and the fourth side wall 19. Figure 8 The diagram only shows that the first sidewall 06 and the fourth sidewall 19 are planar. Of course, the cross-sections of the first sidewall 06 and the fourth sidewall 19 can also be curved surfaces, as long as they can reflect large-angle light rays to small-angle light rays. This embodiment does not impose specific limitations on this.

[0058] In some alternative embodiments, refer to Figure 1 , Figure 3 , Figure 8 , Figure 11 , Figure 12 and Figure 13 , Figure 11 yes Figure 8 A cross-sectional view along the C-C' direction. Figure 12 yes Figure 8 Another cross-sectional view along the C-C' direction. Figure 13 yes Figure 1 A cross-sectional view along the D-D' direction, wherein the light-emitting unit 02 includes a second light-emitting unit 022, the light-emitting color of the second light-emitting unit 022 is different from the light-emitting color of the first light-emitting unit 021, and the second included angle γ2 of the second light-emitting unit 022 is greater than or equal to the second included angle γ2 of the first light-emitting unit 021.

[0059] Understandably, in Figure 11 , Figure 12 and Figure 13 Only the first light-emitting unit 021 and the second light-emitting unit 022 are shown in the diagram; both are flip-chip structures. Figure 8 , Figure 11 and Figure 12 The diagram only illustrates that within one pixel 15, the first light-emitting unit 021 and the second light-emitting unit 022 are arranged sequentially along the second direction Y. Both the first light-emitting unit 021 and the second light-emitting unit 022 require adjustment of their light patterns; therefore, the second included angle γ21 of the first light-emitting unit 021 and the second included angle γ22 of the second light-emitting unit 022 are both acute angles. Figure 11 The diagram only shows that the second included angle γ21 of the first light-emitting unit 021 is equal to the second included angle γ22 of the second light-emitting unit 022. Figure 12 The diagram only shows that the second included angle γ21 of the first light-emitting unit 021 is smaller than the second included angle γ22 of the second light-emitting unit 022; Figure 1 , Figure 3 and Figure 13 The diagram only illustrates that within one pixel 15, the first light-emitting unit 021 and the second light-emitting unit 022 are arranged sequentially along the first direction X. Figure 3 The diagram only shows that the second included angle γ21 of the first light-emitting unit 021 is an acute angle. Figure 13 The diagram only shows that the second included angle γ22 of the second light-emitting unit 022 is a right angle. That is, the first light-emitting unit 021 needs to adjust the brightness attenuation along the second direction Y, while the second light-emitting unit 022 does not need to be adjusted. Specifically, the angles of the second included angle γ21 of the first light-emitting unit 021 and the second included angle γ22 of the second light-emitting unit 022 can be adjusted according to actual needs to make the light patterns of the first light-emitting unit 021 and the second light-emitting unit 022 more consistent, so as to avoid the light emitted by the first light-emitting unit 021 and the light emitted by the second light-emitting unit 022 having different mixing ratios under different viewing angles, resulting in color shift under different viewing angles.

[0060] In some alternative embodiments, reference continues to be made to... Figure 8 and Figure 12 The wavelength of the light emitted by the first light-emitting unit 021 is shorter than the wavelength of the light emitted by the second light-emitting unit 022.

[0061] It is understandable that the wavelength of the emitted color of the first light-emitting unit 021 is shorter than the wavelength of the emitted color of the second light-emitting unit 022. That is, the light pattern of the first light-emitting unit 021 is more divergent than that of the second light-emitting unit 022. In order to make the light patterns of the first light-emitting unit 021 and the second light-emitting unit 022 closer, it is necessary to set the second included angle γ21 of the first light-emitting unit 021 to be smaller than the second included angle γ22 of the second light-emitting unit 022. Specifically, the second sidewall 07 of the first light-emitting unit 021 has a greater inclination than the second sidewall 07 of the second light-emitting unit 022. This allows more large-angle light rays in the first light-emitting unit 021 to be emitted and reflected on the surface of the second sidewall 07 of the first light-emitting unit 021. As a result, more large-angle light rays in the first light-emitting unit 021 will have an emission direction after reflection that is closer to the direction perpendicular to the plane where the substrate 01 is located. This makes the light patterns of the first light-emitting unit 021 and the second light-emitting unit 022 more consistent, avoiding different mixing ratios of the light emitted by the first light-emitting unit 021 and the light emitted by the second light-emitting unit 022 at different viewing angles, which would cause color shift at different viewing angles.

[0062] In some alternative embodiments, refer to Figure 8 , Figure 11 and Figure 14 , Figure 14 yes Figure 8 Another cross-sectional view along the C-C' direction. Since the light pattern of the light-emitting unit 02 is related to manufacturing processes and materials, there may be cases where the light pattern of the second light-emitting unit 022 is the same as or approximately the same as the light pattern of the first light-emitting unit 021, or where the light pattern of the second light-emitting unit 022 is more divergent than that of the first light-emitting unit 021. (Refer to...) Figure 11 If the light pattern of the second light-emitting unit 022 is the same as or approximately the same as the light pattern of the first light-emitting unit 021, then the required adjustment degree for the second light-emitting unit 022 and the first light-emitting unit 021 is the same, that is, the second included angle γ21 of the first light-emitting unit 021 is equal to the second included angle γ22 of the second light-emitting unit 022; refer to Figure 14 If the light pattern of the second light-emitting unit 022 is more divergent than that of the first light-emitting unit 021, then the required light pattern adjustment degree of the second light-emitting unit 022 should be greater than that of the first light-emitting unit 021. Therefore, the second included angle γ22 of the second light-emitting unit 022 needs to be set to be smaller than the second included angle γ21 of the first light-emitting unit 021.

[0063] In some alternative embodiments, refer to Figure 1 , Figure 15 yes Figure 1 Another cross-sectional view along the D-D' direction. Figure 16 yes Figure 1 A cross-sectional view along the E-E' direction, wherein the light-emitting unit 02 includes a third light-emitting unit 023, and the first included angle γ13 of the third light-emitting unit 023 is equal to the second included angle γ23 of the third light-emitting unit 023.

[0064] Understandably, in Figure 15 and Figure 16 The diagram only shows the third light-emitting unit 023 as an inverted structure; however, it is not limited to this. (See also...) Figure 1 , Figure 15 and Figure 16 The diagram only illustrates that within one pixel 15, the first light-emitting unit 021 and the third light-emitting unit 023 are arranged sequentially along the first direction X. The first included angle γ13 of the third light-emitting unit 023 is equal to the second included angle γ23 of the third light-emitting unit 023, both of which are right angles. The plane containing the first sidewall 06 of the third light-emitting unit 023 is perpendicular to the plane containing the substrate 01, and the plane containing the second sidewall 07 of the third light-emitting unit 023 is also perpendicular to the plane containing the substrate 01. That is, the third light-emitting unit 023 does not need to adjust its light shape. For example, the light color of the third light-emitting unit 023 is red. Usually, the light shape of red is relatively concentrated, and the display effect is almost the same at any viewing angle. Therefore, there is no need to adjust its light shape, nor is it necessary to adjust the shape of the third light-emitting unit 023.

[0065] In some alternative embodiments, refer to Figure 1 , Figure 3 , Figure 17 and Figure 18 , Figure 17 yes Figure 1 Another cross-sectional view along the D-D' direction. Figure 18 yes Figure 1 A cross-sectional view along the F-F' direction shows that the light-emitting unit 02 includes a fourth light-emitting unit 024. Along the direction parallel to the plane where the substrate 01 is located, the minimum distance from the first light-emitting unit 021 to the barrier wall 03 is D1, and the minimum distance from the fourth light-emitting unit 024 to the barrier wall 03 is D2, where D1 < D2, and the second included angle γ21 of the first light-emitting unit 021 is smaller than the second included angle γ24 of the fourth light-emitting unit 024.

[0066] Understandably, in Figure 17 and Figure 18 The diagram only illustrates an inverted structure with light-emitting unit 02; however, it is not limited to this. Figure 1 , Figure 3 , Figure 17 and Figure 18The diagram only illustrates the sequential arrangement of the first light-emitting unit 021 and the fourth light-emitting unit 024 along the first direction X within one pixel 15. When the light patterns of the first light-emitting unit 021 and the fourth light-emitting unit 024 are different, taking the example that the light pattern of the first light-emitting unit 021 is more divergent than that of the fourth light-emitting unit 024, the light pattern of the first light-emitting unit 021 is adjusted without adjusting the light pattern of the fourth light-emitting unit 024. Specifically, the second sidewall 07 of the first light-emitting unit 021 is inclined, while the second sidewall 07 of the fourth light-emitting unit 024 is perpendicular to the plane of the substrate 01. The second included angle γ21 of unit 021 is smaller than the second included angle γ24 of the fourth light-emitting unit 024, which can make the light pattern of the first light-emitting unit 021 and the light pattern of the fourth light-emitting unit 024 more consistent, and avoid the light emitted by the first light-emitting unit 021 and the light emitted by the fourth light-emitting unit 024 having different mixing ratios at different viewing angles, resulting in color shift at different viewing angles. At the same time, setting D1 < D2, that is, increasing the distance between the barrier wall 03 and the fourth light-emitting unit 024, can prevent the barrier wall 03 from blocking the light emitted by the fourth light-emitting unit 024 and affecting the light pattern of the fourth light-emitting unit 024.

[0067] In some alternative embodiments, refer to Figure 1 , Figure 18 and Figure 19 , Figure 19 yes Figure 1 Another cross-sectional view along the F-F' direction shows that the first included angle γ11 of the first light-emitting unit 021 is equal to the first included angle γ14 of the fourth light-emitting unit 024.

[0068] Understandably, in Figure 19 The diagram only shows that the light-emitting unit 02 has an inverted structure; however, it is not limited to this. (See also...) Figure 15 and Figure 16 To achieve a similar effect between the light patterns of the first light-emitting unit 021 and the fourth light-emitting unit 024, the first side 16 of the baffle 03 faces the first light-emitting unit 021 and intersects the plane of the substrate 01. The second side 20 of the baffle 03 faces the fourth light-emitting unit 024 and is perpendicular to the plane of the substrate 01. The baffle 03 adjusts the brightness attenuation of the first light-emitting unit 021 along the first direction X without affecting the light pattern of the fourth light-emitting unit 024. This ensures a similar effect between the light patterns of the first and fourth light-emitting units, preventing color shifts caused by different mixing ratios of the light emitted by the first and fourth light-emitting units 021 at different viewing angles. (Refer to...) Figure 18 The brightness attenuation of the first light-emitting unit 021 along the first direction X is adjusted only by the baffle 03; refer to Figure 19 The degree of brightness attenuation of the first light-emitting unit 021 along the first direction X can be adjusted by the first sidewall 06 and the barrier wall 03. The specific method of adjusting the light shape of the first light-emitting unit 021 can be selected according to actual needs, and this embodiment does not impose specific restrictions on it.

[0069] In some alternative embodiments, refer to Figure 1 and Figure 20 , Figure 20 yes Figure 1 Another cross-sectional view along the F-F' direction includes a first encapsulation layer 17 located on the side of the light-emitting unit 02 away from the substrate 01, the refractive index of the first encapsulation layer 17 is n1, a second encapsulation layer 18 located on the side of the first encapsulation layer 17 away from the substrate 01, the refractive index of the second encapsulation layer 18 is n2, and the first encapsulation layer 17 and the second encapsulation layer 18 are in contact.

[0070] The display panel 100 includes a fifth light-emitting unit 025. The height of the barrier wall 03 corresponding to the fifth light-emitting unit 025 is H1. The minimum distance from the fifth light-emitting unit 025 to the barrier wall 03 is D3, where D3 ≥ H1×tan(arcsin(n2 / n1)).

[0071] Understandably, for the sake of clarity, in Figure 20 In the process, no pattern filling is performed on the first encapsulation layer 17 and the second encapsulation layer 18. Figure 20 The diagram only shows that the first light-emitting unit 021 and the fifth light-emitting unit 025 are both inverted structures; however, this is not the only limitation. (See also...) Figure 20Along the direction perpendicular to the plane of substrate 01, the height of the barrier 03 corresponding to the fifth light-emitting unit 025 is H1, and the height of the fifth light-emitting unit 025 is H2, where H1 > H2. The barrier 03 has the best light reflection effect. To improve the reflection effect of the barrier 03, it is preferable that the refractive index n1 of the first encapsulation layer is greater than the refractive index n3 of the barrier 03. Taking the example that the light shape of the first light-emitting unit 021 is more divergent than that of the fifth light-emitting unit 025, it is necessary to adjust the light shape of the first light-emitting unit 021 without adjusting the light shape of the fifth light-emitting unit 025, so that the light shapes of the first light-emitting unit 021 and the fifth light-emitting unit 025 tend to be consistent. Therefore, the first side 16 of the barrier 03 facing the first light-emitting unit 021 intersects the plane of substrate 01, while the barrier 03 facing the fifth light-emitting unit 025... The second side of 25 is perpendicular to the plane of substrate 01. In order to prevent the setting of the barrier 03 from affecting the light pattern of the fifth light-emitting unit 025, it is necessary to set a certain distance between the fifth light-emitting unit 025 and the barrier 03 to avoid the barrier 03 blocking the light emitted by the fifth light-emitting unit 025. Specifically, the refractive index of the first encapsulation layer 17 is n1, and the refractive index of the second encapsulation layer 18 is n2. n1>n2, that is, the light emitted by the fifth light-emitting unit 025 is from the optically denser medium to the optically less dense medium. The light may undergo total internal reflection at the critical surface of the first encapsulation layer 17 and the second encapsulation layer 18. The critical angle of total internal reflection θ=arcsin(the refractive index of the second encapsulation layer 18 n2 / the refractive index of the first encapsulation layer 17 n1). Furthermore, the minimum distance from the fifth light-emitting unit 025 to the barrier 03 is D3= H1×tan(the critical angle of total internal reflection θ), that is, D3= H1×tan(arcsin(n2 / n1)).

[0072] In some alternative embodiments, reference continues to be made to... Figure 1 , Figure 17 and Figure 18 Along the first direction X, the length of the first light-emitting unit 021 is E1, and along the second direction Y, the width of the first light-emitting unit 021 is F1, where E1>F1.

[0073] It is understandable that since the setting of the barrier 03 will occupy a certain space, E1>F1, that is, the barrier 03 is set to the short side of the first light-emitting unit 021, which can make the area of ​​a single pixel 15 rectangular. Preferably, along the first direction X, the width of the fourth light-emitting unit 024 is E2, and along the second direction Y, the length of the fourth light-emitting unit 024 is F2, F2>E2, which can make the area of ​​a single pixel 15 square, thus optimizing the pixel 15 arrangement of the display panel 100.

[0074] In some alternative embodiments, reference continues to be made to... Figure 1 and Figure 2The barrier 03 includes a first side 16 facing the light-emitting unit 02, and the angle between the first side 16 and the bottom surface of the barrier 03 is a third angle γ3, which is an acute angle.

[0075] It is understood that the angle between the first side 16 and the bottom surface of the barrier 03 is the third angle γ3, which is an acute angle. That is, the first side 16 is tilted. When the light emitted by the first light-emitting unit 021 shines on the first side 16, this part of the light is reflected by the first side 16, causing the emission direction of this part of the light after reflection to shift towards the direction perpendicular to the plane where the substrate 01 is located, thereby emitting the light out of the display panel 100, so as to improve the brightness attenuation of the first light-emitting unit 021 in the first direction X.

[0076] In some alternative embodiments, reference continues to be made to... Figure 1 and Figure 2 The first side 16 includes a reflective material.

[0077] It is understandable that the first side 16 includes a reflective material, and the light emitted by the first light-emitting unit 021 is better reflected by the first side 16, thus improving the efficiency of light utilization.

[0078] In some alternative embodiments, refer to Figure 1 , Figure 2 and Figure 21 , Figure 21 yes Figure 1 Another cross-sectional view along the F-F' direction includes a sixth light-emitting unit 026, whose light-emitting color is different from that of the first light-emitting unit 021; wherein, the angle between the side of the barrier wall 03 facing the first light-emitting unit 021 and the bottom surface of the barrier wall 03 is α, and the angle between the side of the barrier wall 03 facing the sixth light-emitting unit 026 and the bottom surface of the barrier wall 03 is β, wherein α < β.

[0079] It is understandable that, taking the example that the light pattern of the first light-emitting unit 021 is more divergent than that of the sixth light-emitting unit 026, the light pattern of the first light-emitting unit 021 is adjusted without adjusting the light pattern of the sixth light-emitting unit 021, so that the light patterns of the first light-emitting unit 021 and the sixth light-emitting unit 021 tend to be consistent, α < β, that is, the side of the barrier 03 facing the first light-emitting unit 021 intersects the plane of the substrate 01, while the side of the barrier 03 facing the sixth light-emitting unit 026 is perpendicular to the plane of the substrate 01. Therefore, the barrier 03 plays a role in adjusting the light pattern of the first light-emitting unit 021, but does not affect the light pattern of the sixth light-emitting unit 026. Of course, the shape of the barrier 03 can also be adjusted according to actual needs. This embodiment does not impose specific limitations on this.

[0080] In some alternative embodiments, reference continues to be made to... Figure 1 and Figure 2 The third included angle γ3 is less than the second included angle γ2 of the light-emitting unit 02.

[0081] It is understandable that, taking the first light-emitting unit 021 as an example, the setting of the third included angle γ3 affects the degree of brightness attenuation of the first light-emitting unit 021 along the first direction X, and the setting of the second included angle γ2 affects the degree of brightness attenuation of the first light-emitting unit 021 along the second direction Y. When adjusting the light shape of the first light-emitting unit 021, the degree of brightness attenuation of the first light-emitting unit 021 along the first direction X and the second direction Y is usually made the same. Since changing the shape of the first light-emitting unit 021 to adjust the degree of brightness attenuation of the first light-emitting unit 021 is more effective than setting the barrier 03 to adjust the degree of brightness attenuation of the first light-emitting unit 021, the third included angle γ3 is usually set to be smaller than the second included angle γ2 of the light-emitting unit 02. Of course, it is not limited to this. The specific angles of the second included angle γ2 and the third included angle γ3 can be set according to actual needs. This embodiment does not impose specific restrictions on this.

[0082] In some alternative embodiments, reference continues to be made to... Figure 1 and Figure 3 The second included angle γ2 is in the range of 50° to 85°. If the second included angle γ2 is less than 50° or greater than 85°, the reflection effect of the second side will be reduced, and the effect of adjusting the brightness attenuation of the light-emitting unit 02 along the second direction Y will be reduced. Setting the second included angle γ2 in the range of 50° to 85° is the preferred range. Specifically, the second included angle γ2 can be 50°, 55°, 60°, 65°, 70°, 75°, 80° or 85°.

[0083] In some alternative embodiments, reference continues to be made to... Figure 1 and Figure 2 The angle range of the third included angle γ3 is 40° to 70°. When the height of the barrier wall 03 is determined, if the angle of the third included angle γ3 is less than 40°, it will cause the width of the barrier wall 03 to increase, increase the area occupied by the barrier wall 03, reduce the pixel density of the display panel 100, and also affect the reflection effect of the first side 16. If the angle of the third included angle γ3 is greater than 70°, it will also affect the reflection effect of the first side 16, thereby reducing the adjustment effect of the brightness attenuation degree of the light-emitting unit 02 along the first direction X. The effect of the third included angle γ3 being in the range of 40° to 70° is better. Preferably, the angle range of the third included angle γ3 is 45° to 60°. Specifically, the angle of the third included angle γ3 can be 45°, 50°, 55° or 60°.

[0084] In some alternative embodiments, refer to Figure 1 , Figure 9 and Figure 22 , Figure 22 This is a comparison image of the light pattern before and after adjustment provided by the present invention. The light emission color of the first light-emitting unit 021 is blue.

[0085] It should be noted that a pixel 15 typically includes 3 light-emitting units 02. Of course, the number of light-emitting units 02 in a pixel 15 can also be 4. This embodiment does not impose a specific limitation on this. Taking a pixel 15 including 3 light-emitting units 02 as an example, it includes a first light-emitting unit 021, a second light-emitting unit 022, and a third light-emitting unit 023. The first light-emitting unit 021 and the second light-emitting unit 022 are arranged side by side along the second direction Y. The length of the first light-emitting unit 021 along the first direction X is greater than the width of the first light-emitting unit 021 along the second direction Y. The length of the second light-emitting unit 022 along the first direction X is greater than the width of the first light-emitting unit 021 along the second direction Y. The third light-emitting unit 023 has a length along the second direction Y that is greater than the width of the third light-emitting unit 023 along the first direction X. The long side of the third light-emitting unit 023 faces the short side of the first light-emitting unit 021 and the second light-emitting unit 022.

[0086] It is understandable that the first light-emitting unit 021 emits blue light, the second light-emitting unit 022 emits green light, and the third light-emitting unit 023 emits red light. Compared with the third light-emitting unit 023, the light patterns of the first light-emitting unit 021 and the second light-emitting unit 022 are more divergent. Therefore, the first light-emitting unit 021 and the second light-emitting unit 022 can be arranged side by side along the second direction Y to utilize the same baffle 03. The reasonable setting of the baffle 03 helps in the arrangement of pixels 15. The above only describes one way of setting the light-emitting unit 02, but it is not limited to this. It is also possible that the first light-emitting unit 021 emits green light, the second light-emitting unit 022 emits blue light, and the third light-emitting unit 023 emits red light. By adjusting the light patterns of the first light-emitting unit 021 and the second light-emitting unit 022 through the baffle 03 and the second side wall 07, the light patterns of the first light-emitting unit 021, the second light-emitting unit 022 and the third light-emitting unit 023 can be made more consistent, avoiding the problem of color shift under different viewing angles when mixing light.

[0087] The present invention also provides a display device 200, including the display panel 100 provided in any of the above embodiments of the present invention. Figure 23 This is a schematic diagram of a display device 200 provided by the present invention, in conjunction with... Figure 23 As shown, Figure 23Taking a mobile phone as an example, the description of the display device 200 is provided. It is understood that the display device 200 provided in this embodiment of the invention can be other display devices 200 with display functions, such as computers, televisions, in-vehicle display devices 200, etc., and this invention does not impose specific limitations on them. The display device 200 provided in this embodiment of the invention has the beneficial effects of the display panel 100 provided in this embodiment of the invention. For specific details regarding the display panel 100 in the above embodiments, please refer to the specific descriptions of the display panel 100 in the various embodiments; these will not be repeated here.

[0088] As can be seen from the above embodiments, the display panel provided by the present invention achieves at least the following beneficial effects:

[0089] The display panel provided by the present invention includes a substrate; a light-emitting unit located on one side of the substrate; and a baffle wall located on the same side of the substrate as the light-emitting unit. The light-emitting unit and the baffle wall are arranged along a first direction. The light-emitting unit includes a first end face and a second end face that are opposite each other in a direction perpendicular to the plane of the substrate. The first end face is located on the side of the second end face that is away from the substrate. The light-emitting unit includes a first sidewall facing the baffle wall. The angle between the first sidewall and the first end face is a first angle. The light-emitting unit includes a second sidewall and a third sidewall that are opposite each other in a second direction. The angle between the second sidewall and the first end face is a second angle. The second direction intersects the first direction. The light-emitting unit includes a first light-emitting unit. The first angle of the first light-emitting unit is greater than the second angle of the first light-emitting unit. The first sidewall of the first light-emitting unit faces the baffle wall. When the light emitted by the first light-emitting unit is incident on the baffle wall through the first sidewall, the light is reflected on the surface of the baffle wall. The direction of light propagation will be shifted towards a direction closer to the plane perpendicular to the substrate, thus exiting the display panel. At the same time, the second sidewall of the first light-emitting unit forms a second angle with the first end face. Some of the large-angle light rays inside the first light-emitting unit will be reflected on the surface of the second sidewall. After reflection, the direction of propagation of the large-angle light rays will also be shifted towards a direction closer to the plane perpendicular to the substrate, thus exiting the first light-emitting unit. Through this design, the brightness attenuation of the first light-emitting unit in the first and second directions is changed, avoiding different light emission effects of the first light-emitting unit at different viewing angles and preventing color shift problems at different viewing angles during light mixing.

[0090] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel, characterized in that, include: substrate; The light-emitting unit is located on one side of the substrate; A barrier wall is located on the same side of the substrate as the light-emitting unit; the light-emitting unit and the barrier wall are arranged along a first direction, and the light-emitting unit includes a first end face and a second end face that are opposite each other in a direction perpendicular to the plane of the substrate, and the first end face is located on the side of the second end face away from the substrate; The light-emitting unit includes a first sidewall facing the retaining wall, and the angle between the first sidewall and the first end face is a first angle; the light-emitting unit includes a second sidewall and a third sidewall disposed opposite to each other in a second direction, the second sidewall and the third sidewall not facing the retaining wall, the angle between the second sidewall and the first end face is a second angle, and the second direction intersects the first direction; The light-emitting unit includes a first light-emitting unit, wherein the first included angle of the first light-emitting unit is greater than the second included angle of the first light-emitting unit.

2. The display panel according to claim 1, characterized in that, The first included angle of the first light-emitting unit is a right angle, and the second included angle of the first light-emitting unit is an acute angle; Alternatively, the first included angle of the first light-emitting unit is an acute angle, and the second included angle of the first light-emitting unit is an acute angle.

3. The display panel according to claim 1, characterized in that, The light-emitting unit includes a second light-emitting unit, the light-emitting color of the second light-emitting unit is different from the light-emitting color of the first light-emitting unit, and the second included angle of the second light-emitting unit is greater than or equal to the second included angle of the first light-emitting unit.

4. The display panel according to claim 3, characterized in that, The wavelength of the emitted color of the first light-emitting unit is shorter than the wavelength of the emitted color of the second light-emitting unit.

5. The display panel according to claim 1, characterized in that, The light-emitting unit includes a third light-emitting unit, and the first included angle of the third light-emitting unit is equal to the second included angle of the third light-emitting unit.

6. The display panel according to claim 1, characterized in that, The light-emitting unit includes a fourth light-emitting unit. Along a direction parallel to the plane of the substrate, the minimum distance from the first light-emitting unit to the barrier is D1, and the minimum distance from the fourth light-emitting unit to the barrier is D2, where D1 < D2, and the second included angle of the first light-emitting unit is smaller than the second included angle of the fourth light-emitting unit.

7. The display panel according to claim 6, characterized in that, The first included angle of the first light-emitting unit is equal to the first included angle of the fourth light-emitting unit.

8. The display panel according to claim 1, characterized in that, It includes a first encapsulation layer located on the side of the light-emitting unit away from the substrate, the first encapsulation layer having a refractive index of n1, and a second encapsulation layer located on the side of the first encapsulation layer away from the substrate, the second encapsulation layer having a refractive index of n2, the first encapsulation layer being in contact with the second encapsulation layer; The display panel includes a fifth light-emitting unit, the height of the barrier wall corresponding to the fifth light-emitting unit is H1, and the minimum distance from the fifth light-emitting unit to the barrier wall is D3, where D3 ≥ H1×tan(arcsin(n2 / n1)).

9. The display panel according to claim 1, characterized in that, Along the first direction, the length of the first light-emitting unit is E1, and along the second direction, the width of the first light-emitting unit is F1, where E1 > F1.

10. The display panel according to claim 1, characterized in that, The barrier wall includes a first side facing the light-emitting unit, and the angle between the first side and the bottom surface of the barrier wall is a third angle, which is an acute angle.

11. The display panel according to claim 10, characterized in that, The first side surface includes a reflective material.

12. The display panel according to claim 10, characterized in that, It includes a sixth light-emitting unit, the light-emitting color of which is different from that of the first light-emitting unit; wherein, the angle between the side of the barrier wall facing the first light-emitting unit and the bottom surface of the barrier wall is α, and the angle between the side of the barrier wall facing the sixth light-emitting unit and the bottom surface of the barrier wall is β, wherein α < β.

13. The display panel according to claim 10, characterized in that, The third included angle is smaller than the second included angle of the light-emitting unit.

14. The display panel according to claim 1, characterized in that, The first light-emitting unit emits blue light.

15. A display device, characterized in that, Includes the display panel as described in claims 1-14.

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