A display panel and display device

Abstract

This invention provides a display panel and display device, including a light-emitting layer and a light-controlling layer. The light-emitting layer includes a plurality of light-emitting devices, and the light-controlling layer is located on one side of the light-emitting layer. The light-controlling layer includes a plurality of light-controlling units. Each light-controlling unit includes a first structure, a second structure, and a third structure. The refractive index of the first structure is greater than that of the third structure, and the refractive index of the third structure is greater than that of the second structure. The first structure at least partially overlaps with the light-emitting devices in a direction perpendicular to the plane of the display panel. The second structure is located on both sides of the first structure in a first direction, and a gap exists between the second structure and the first structure. The third structure is located at least on the side of the first structure away from the light-emitting layer and within the gap. The first direction is parallel to the plane of the display panel. The display panel and display device provided by this invention have better viewing angle brightness and lower power consumption.

Description

Technical Field

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

[0002] With the development of display technology, users typically demand low power consumption from display devices to achieve longer usage time. Among the factors affecting power consumption, the light extraction efficiency of a display device is a major one. Lower light extraction efficiency requires higher power consumption to maintain display brightness; conversely, higher light extraction efficiency results in lower power consumption. Factors influencing the light extraction efficiency of a display device include the inability to escape large-angle light emitted by the light-emitting device. Summary of the Invention

[0003] Based on this, the present invention provides a display panel and a display device to solve the above problems.

[0004] In a first aspect, the present invention provides a display panel, comprising a light-emitting layer and a light-controlling layer. The light-emitting layer includes a plurality of light-emitting devices, and the light-controlling layer is located on one side of the light-emitting layer. The light-controlling layer includes a plurality of light-controlling units. Each light-controlling unit includes a first structure, a second structure, and a third structure. The refractive index of the first structure is greater than that of the third structure, and the refractive index of the third structure is greater than that of the second structure. The first structure at least partially overlaps with the light-emitting devices in a direction perpendicular to the plane of the display panel. The second structure is located on both sides of the first structure in a first direction, and a gap region is included between the second structure and the first structure. The third structure is located at least on the side of the first structure away from the light-emitting layer and within the gap region. The first direction is parallel to the plane of the display panel.

[0005] In one implementation of the first aspect, the first structure includes a first lower surface facing the light-emitting layer, a first upper surface facing away from the light-emitting layer, and a first side surface connecting the first lower surface and the first upper surface and facing the second structure; the first side surface includes a first portion and a second portion; in a direction perpendicular to the plane of the display panel, the first portion is farther away from the light-emitting layer than the second portion; the angle between the first portion and the first lower surface is α1, the angle between the second portion and the first lower surface is α2, α1 < α2, α1 < 90°, α2 < 90°.

[0006] In one implementation of the first aspect, 45° ≥ α1 ≥ 30°.

[0007] In one implementation of the first aspect, 70° ≥ α2 ≥ 55°.

[0008] In one implementation of the first aspect, the second structure includes a second lower surface facing the light-emitting layer, a second upper surface facing away from the light-emitting layer, and a second side surface connecting the second lower surface and the second upper surface and facing the first structure; the second side surface includes a third portion and a fourth portion; in a direction perpendicular to the plane of the display panel, the third portion is farther away from the light-emitting layer than the fourth portion; the angle between the third portion and the second lower surface is α3, the angle between the fourth portion and the second lower surface is α4, α4 < α3, α3 < 90°, α4 < 90°.

[0009] In one implementation of the first aspect, 45° ≥ α3 ≥ 30°.

[0010] In one implementation of the first aspect, 30°≥α4>0°.

[0011] In one implementation of the first aspect, the orthographic projection of the first structure covers the orthographic projection of the light-emitting device in a direction perpendicular to the plane of the display panel.

[0012] In one implementation of the first aspect, the width of the interval region along the first direction is D1, where D1 ≥ 0.5 μm.

[0013] In one implementation of the first aspect, the second structure surrounds the first structure.

[0014] In one implementation of the first aspect, adjacent light control units share the second structure.

[0015] In one implementation of the first aspect, the display panel further includes a touch layer located between the light-emitting layer and the light-controlling layer; wherein the touch layer includes multiple touch lines, and a second structure covers the touch lines.

[0016] In one implementation of the first aspect, multiple third structures are connected to form a continuous structure on the entire surface.

[0017] In a second aspect, the present invention also provides a display device, including a display panel as provided in the first aspect.

[0018] The display panel and display device provided by this invention include a light control unit corresponding to the light-emitting device. The emission direction of small-angle light incident on the light control unit does not change significantly. Through the cooperation of the first and third structures in the light control unit, the emission direction of large-angle light converges towards a direction perpendicular to the plane of the display panel. Furthermore, through the cooperation of the first, second, and third structures, the emission direction of ultra-large-angle light significantly converges towards a direction perpendicular to the plane of the display panel. This increases the amount of large-angle and ultra-large-angle light emitted from the light-emitting surface of the display panel, improves the brightness of the display panel at the normal viewing angle, and reduces the power consumption of the display panel. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a partial cross-sectional schematic diagram of a display panel provided in an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating how the light control unit regulates the light emitted by the light-emitting device. Figure 3 A projection diagram showing multiple light control units and light-emitting devices; Figure 4 This is another projection diagram of multiple light control units and light-emitting devices; Figure 5 This is a schematic diagram of a first structure in a light control unit provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of a second structure in a light control unit provided in an embodiment of the present invention; Figure 7 A partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0021] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0024] In the description of this specification, it should be understood that the terms "substantially", "approximately", "about", "roughly", "generally", "largely" used in the claims and embodiments of this invention refer to values ​​that can be generally agreed upon within a reasonable range of process operations or tolerances, rather than precise values.

[0025] It should be understood that although the terms "first," "second," etc., may be used to describe structures in the embodiments of the present invention, these should not be limited to these terms. These terms are only used to distinguish structures from each other. For example, without departing from the scope of the embodiments of the present invention, a first structure may also be referred to as a second structure, and similarly, a second structure may also be referred to as a first structure. Through meticulous and in-depth research, the inventors of this case have provided a solution to the problems existing in the prior art.

[0026] Figure 1 This is a partial cross-sectional schematic diagram of a display panel provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the display panel 01 includes a light-emitting layer 10 and a light-controlling layer 20. The light-controlling layer 20 is located on one side of the light-emitting layer 10. Specifically, the light-controlling layer 20 is located on the side of the light-emitting layer 10 facing the light-emitting surface of the display panel 01. The light-controlling layer 20 can regulate the transmission path of the light emitted by the light-emitting layer 10. In addition, the display panel 01 may also include a driving layer 30, which includes driving devices for driving the light-emitting devices in the light-emitting layer 10 to emit light.

[0027] The light-emitting layer 10 includes a plurality of light-emitting devices 100, which can be one of organic light-emitting diodes (OLEDs), micro-light-emitting diodes (Micro-LEDs), or mini-LEDs. In addition, the light-emitting devices 100 can also be other types of devices.

[0028] The light control layer 20 includes multiple light control units 200. Each light control unit 200 is a structure within the light control layer 20 capable of regulating the light emitted by the light-emitting device 100. Therefore, the light control units 200 at least partially overlap with the light-emitting device 100 in a direction perpendicular to the plane of the display panel 01. Each light control unit 200 is composed of at least three parts with different refractive indices, such as... Figure 1 As shown, the light control unit 200 includes a first structure 21, a second structure 22 and a third structure 23, wherein the refractive index of the first structure 21 is greater than the refractive index of the third structure 23 and the refractive index of the third structure 23 is greater than the refractive index of the second structure 22.

[0029] Please continue to refer to this. Figure 1 The first structure 21 at least partially overlaps with the light-emitting device 100 in a direction perpendicular to the plane of the display panel 01, for example, as Figure 1As shown, the first structure 21 is located directly above the light-emitting device 100; the second structure 22 is located on both sides of the first structure 21 at least in the first direction X, and a gap 24 is included between the second structure 22 and the first structure 21. The first direction X is parallel to the plane of the display panel 01, for example, as... Figure 1 As shown, the second structure 22 is located on the left and right sides of the first structure 21 and is separated from the first structure 21 to form a gap region 24 between them; the third structure 23 is located at least on the side of the first structure 21 away from the light-emitting layer 10 and within the gap region 24. It can be understood that the third structure 23 covers the sidewalls of the first structure 21 and the second structure 22 exposed by the gap region 24 and the third structure 23 also covers the upper surface of the first structure 21 away from the light-emitting layer 10.

[0030] Figure 2 This is a schematic diagram illustrating the control of light emitted by the light-emitting device by the light-control unit. The following diagram, combined with... Figure 2 The light control unit 200's light regulation mechanism is explained. For clarity, the light emitted by the light-emitting device 100 is categorized into small-angle light, large-angle light, and ultra-large-angle light. The angle between the small-angle light and the direction perpendicular to the plane of the display panel 01 belongs to a first range; the angle between the large-angle light and the direction perpendicular to the plane of the display panel 01 belongs to a second range; and the angle between the ultra-large-angle light and the direction perpendicular to the plane of the display panel 01 belongs to a third range. The upper limit of the first range is lower than the lower limit of the second range, and the upper limit of the second range is lower than the lower limit of the third range. Furthermore, the light described in this invention is emitted by the light-emitting device 100.

[0031] Please refer to Figure 2 When the small-angle light ray L1 is incident on the light control unit 200, it passes sequentially through the first structure 21 and the third structure 23, that is, it enters the third structure 23, which has a relatively lower refractive index, from the first structure 21, which has a relatively higher refractive index. Since the angle between the small-angle light ray L1 and the direction perpendicular to the plane of the display panel 01 is small, even if this portion of the light ray deviates from the normal during refraction, the refraction angle of the small-angle light ray L1 will not be too large. Furthermore, the small-angle light ray L1 includes a large amount of light that is perpendicularly incident on the third structure 23, and this portion of the light does not undergo refraction.

[0032] Continue to refer to Figure 2 After the large-angle light L2 is incident on the light control unit 200, it first passes through the first structure 21, and then enters the third structure 23 through the side wall of the first structure 21, such as... Figure 2As shown, the transmission angle of the large-angle light rays L2 converges towards the direction Z perpendicular to the plane of the display panel 01, meaning that the transmission angle of these large-angle light rays L2 emitted from the light control unit 200 becomes smaller. Specifically, a portion of the sidewall of the first structure 21, located away from the light-emitting layer 10 in the direction Z perpendicular to the plane of the display panel 01, receives a large amount of large-angle light rays L2. These large-angle light rays L2 will... Figure 2 The light rays shown are adjusted to have a smaller emission angle.

[0033] Continue to refer to Figure 2 When the ultra-wide-angle light L3 is incident on the light control unit 200, it first passes through the first structure 21 and then enters the interval area 24 through the side wall of the first structure 21, that is, it enters the third structure 23 filled in the interval area 24. At this time, the transmission angle of the ultra-wide-angle light L3 converges towards the direction Z perpendicular to the plane where the display panel 01 is located. However, since the angle between the ultra-wide-angle light L3 and the direction Z perpendicular to the plane where the display panel 01 is located is very large, even if the transmission angle of these lights after entering the third structure 23 from the first structure 21 converges, the convergence effect is limited. Therefore, a second structure 22 with a refractive index less than that of the third structure 23 is set, and the ultra-wide-angle light L3 continues to transmit from the third structure 23 to the second structure 22, and as... Figure 2 As shown, at least a portion of the ultra-wide-angle light rays L3 undergo total internal reflection at the interface between the sidewall of the second structure 22 and the third structure 23, and the angle between the fully reflected light rays and the direction Z perpendicular to the plane of the display panel 01 is significantly reduced. Specifically, the portion of the sidewall of the first structure 21 near the light-emitting layer 10 in the direction Z perpendicular to the plane of the display panel 01 receives a large amount of ultra-wide-angle light rays L3, which continue to be incident on the second structure 22 through the third structure 23. These ultra-wide-angle light rays L3 will... Figure 2 The light rays shown are adjusted to have a smaller emission angle.

[0034] Combination Figure 2 Based on the above description of the light control mechanism of the light control unit 200, it can be seen that the light control unit 200 in the display panel 01 provided in this embodiment of the invention does not significantly change the emission direction of the small-angle light L1 incident on the light control unit 200. Through the cooperation of the first structure 21 and the third structure 23, the emission direction of the large-angle light L2 converges towards the direction Z perpendicular to the plane of the display panel 01. Furthermore, through the cooperation of the first structure 21, the second structure 22, and the third structure 23, the emission direction of the ultra-large-angle light L3 significantly converges towards the direction Z perpendicular to the plane of the display panel 01. This increases the amount of light emitted from the light-emitting surface of the display panel 01 for both the large-angle light L2 and the ultra-large-angle light L3, improving the brightness of the display panel 01 at a normal viewing angle and reducing the power consumption of the display panel 01.

[0035] In one embodiment of the present invention, such as Figure 1 As shown, adjacent light control units 200 share the second structure 22, and the second structure 22 between two adjacent light control units 200 is an integral structure. For example, please refer to... Figure 1 In the two adjacent light-controlling units 200 on the left and right, the second structure 22 of the left light-controlling unit 200 and the second structure 22 of the right light-controlling unit 200 are continuous integral structures. When the film layer is patterned to form the second structure 22, the fabrication process is less difficult; in addition, the width of the second structure 22 between adjacent first structures 21 is relatively large, and the upper surface of the second structure 22 away from the light-emitting layer 10 is easily called a flat bearing surface.

[0036] It should be noted that the light control unit 200 may be disposed above only some of the light-emitting devices 100, that is, the light control unit 200 may be disposed above some of the light-emitting devices 100 while the light control unit 200 may not be disposed above the other part of the light-emitting devices 100. In addition, the light control unit 200 may also be disposed above all the light-emitting devices 100, that is, the light control unit 200 may be disposed above all the light-emitting devices 100.

[0037] In addition, the direction for adjusting the light of the display panel 01 can be selected according to the brightness requirements or attenuation requirements of the display panel 01 in different directions. Figure 3 This is a projection diagram of multiple light control units and light-emitting devices. Figure 4 This is another projection diagram of multiple light control units and light-emitting devices.

[0038] In one embodiment, such as Figure 3 As shown, the second structure 22 surrounds the first structure 21. That is, the light control unit 200 can regulate the light emitted by the light-emitting device 100 within a directional range of 0°-360°. This increases the brightness of the pixels containing the light-emitting device 100 in all directions, thereby improving the overall display brightness of the display panel 01.

[0039] In one embodiment, such as Figure 4 As shown, the second structure 22 is located on opposite sides of the first structure 21 along the first direction X, and the second structure 22 is not located on opposite sides of the first structure 21 along the second direction Y, where the second direction X intersects the second direction Y. This method allows for selective control of light in certain directions. Furthermore, the second structure 22 in the light control unit 200 corresponding to different colored light-emitting devices 100 can be located in different positions on the first structure 21.

[0040] In one embodiment of the present invention, combined with Figure 1 and Figure 3 , Figure 4In a direction perpendicular to the plane of the display panel 01, the orthographic projection of the first structure 21 covers the orthographic projection of the light-emitting device 100. The orthographic projection area of ​​the first structure 21 can be larger than the orthographic projection area of ​​the light-emitting device 100, and the light-emitting device 100 is covered by the first structure 21 so that the first structure 21 can obtain more light emitted by the light-emitting device 100. Then, the first structure 21 cooperates with the second structure 22 and the third structure 23 to regulate these lights. That is, by setting the orthographic projection of the first structure 21 to cover the orthographic projection of the light-emitting device 100, the light control unit 200 can regulate the light emitted by the light-emitting device 100. In addition, if the orthographic projection of the first structure 21 does not completely cover the orthographic projection of the light-emitting device 100, the structural differentiation above the light-emitting device 100 will cause uneven light emission of the pixel where the light-emitting device 100 is located. For example, there will be a significant difference in the light emission brightness of the edge of the pixel compared with the light emission brightness of the middle position. This embodiment can effectively avoid this problem.

[0041] In one embodiment of the present invention, combined with Figure 1 and Figure 3 , Figure 4 Multiple third structures 23 are connected to form a continuous structure across the entire surface. The third structure 23 can be considered as a portion of a continuous film layer that overlaps with the first structure 21, the second structure 22, and the spacing region 24 in a direction perpendicular to the plane of the display panel 01. For example, the third structure 23 can be part of a transparent organic protective layer. This embodiment avoids the increased manufacturing process and cost of the display panel 01 caused by separately setting the third structure 23 belonging to the light control unit 200. Simultaneously, the film layer containing the third structure 23 allows the upper surface of the light control layer 20 away from the light-emitting layer 10 to be a flat surface, minimizing light loss due to surface unevenness.

[0042] Figure 5 This is a schematic diagram of the first structure in a light control unit provided in an embodiment of the present invention.

[0043] In one embodiment of the present invention, such as Figure 5 As shown, the first structure 21 includes a first lower surface 211 facing the light-emitting layer 10, a first upper surface 212 facing away from the light-emitting layer 10, and a first side surface 213 connecting the first lower surface 211 and the first upper surface 212 and facing the second structure 22. The first side surface 213 includes a first portion 213a and a second portion 213b. In a direction perpendicular to the plane of the display panel 01, the first portion 213a is farther away from the light-emitting layer 10 than the second portion 213b. Figure 5As shown, the first part 213a can be the portion of the first side surface 213 that connects to the first upper surface 212, and the second part 213b can be the portion of the first side surface 213 that connects to the first lower surface 211. The angle between the first part 213a and the first lower surface 211 is α1, and the angle between the second part 213b and the first lower surface 211 is α2, where α1 < α2, α1 < 90°, and α2 < 90°. Therefore, both the first part 213a and the second part 213b are slopes, with the slope of the first part 213a being gentler than that of the second part 213b, and the slope of the second part 213b being steeper than that of the first part 213a.

[0044] Combination Figure 2 The first part 213a is mainly used in conjunction with the third structure 23 to change the refraction angle of the large-angle light ray L2 in the third structure 23, causing the transmission angle of the large-angle light ray L2 to converge towards the direction Z perpendicular to the plane of the display panel 01. When the slope of the first part 213a is gentler, the angle between the normal direction of the interface between the first part 213a and the third structure 23 and the direction Z perpendicular to the plane of the display panel 01 is smaller. Therefore, it is easier to achieve a smaller angle between the refraction angle of the large-angle light ray L2 that enters the third structure 23 through the first part 213a and the direction Z perpendicular to the plane of the display panel 01. At this time, the first part 213a and the third structure 23 have a better convergence effect on the large-angle light ray L2.

[0045] Combination Figure 2 The second part 231b is mainly used in conjunction with the third structure 23 to enable ultra-wide-angle light rays L3 to be transmitted to the second structure 22, so that total internal reflection occurs at the interface between the second structure 22 and the third structure 23, thereby causing the transmission angle of the ultra-wide-angle light rays L3 to converge in the direction Z perpendicular to the plane where the display panel 01 is located. When the slope of the second part 213b is steeper, the angle between the normal direction of the interface between the second part 213b and the third structure 23 and the arrangement direction of the first structure 21 and the second structure 22 is smaller. Therefore, the angle between the refraction angle of the ultra-wide-angle light rays L3 that enter the third structure 23 through the second part 213b and the arrangement direction of the first structure 21 and the second structure 22 is smaller, ensuring that more ultra-wide-angle light rays L3 can be incident at a large angle on the surface of the second structure 22 facing the first structure 21, thus ensuring that more ultra-wide-angle light rays L3 are totally internally reflected by the second structure 22. At this time, the convergence effect of the ultra-wide-angle light rays L3 is better when the second part 213b works in conjunction with the third structure 23 and the second structure 22.

[0046] Optionally, 45° ≥ α1 ≥ 30°. When α1 ≤ 45°, the slope of the first part 213a can be gentler. As mentioned above, this allows it to work with the third structure 23 to make the angle between the angle at which the large-angle light L2 is emitted from the light control unit 200 and the direction Z perpendicular to the plane of the display panel 01 smaller, thus achieving a better convergence effect for the large-angle light. Furthermore, setting the angle between the first part 213b and the first lower surface 211 to be greater than or equal to 30°, combined with... Figure 5 This allows more large-angle light rays L2 to enter the third structure 23 from below the normal L1, reducing the amount of light entering the third structure 23 from above the normal L1. If large-angle light rays L2 enter the third structure 23 from above the normal L1, the transmission direction in the third structure 23 will be towards the below the normal L1, thus deviating from the direction Z perpendicular to the plane of the display panel 01. This problem can be effectively improved by setting the angle between the first part 213b and the first lower surface 211 to be greater than or equal to 30°.

[0047] Optionally, 70° ≥ α2 ≥ 55°. When α2 ≥ 55°, the slope of the second part 213b can be made steeper. As mentioned above, this allows it to work with the third structure 23 to allow more ultra-large angle light rays L3 to be transmitted to the second structure 22 at a large angle. Consequently, more ultra-large angle light rays L3 can undergo total internal reflection and converge in the direction Z perpendicular to the plane of the display panel 01. Furthermore, setting the angle between the second part 213b and the first lower surface 211 to be less than or equal to 70° can reduce the fabrication difficulty of the first structure 21 and ensure its structural reliability.

[0048] Figure 6 This is a schematic diagram of the second structure in a light control unit provided in an embodiment of the present invention.

[0049] In one embodiment of the present invention, such as Figure 6 As shown, the second structure 22 includes a second lower surface 221 facing the light-emitting layer 10, a second upper surface 222 facing away from the light-emitting layer 10, and a second side surface 223 connecting the second lower surface 221 and the second upper surface 222 and facing the first structure 21. The second side surface 223 includes a third portion 223a and a fourth portion 223b. In a direction perpendicular to the plane of the display panel 01, the third portion 223a is farther away from the light-emitting layer 10 than the fourth portion 223b. Figure 6As shown, the third part 223a can be the portion of the second side surface 223 that connects to the second upper surface 222, and the fourth part 223b can be the portion of the second side surface 223 that connects to the second lower surface 221. The angle between the third part 221 and the second lower surface 221 is α3, and the angle between the fourth part 222 and the second lower surface 221 is α4, where α4 < α3, α3 < 90°, and α4 < 90°. Therefore, both the third part 223a and the fourth part 223b are slopes, with the slope of the third part 223a being steeper than that of the fourth part 223b, and the slope of the fourth part 223b being gentler than that of the third part 223a.

[0050] Combination Figure 2 The second side surface 223 of the second structure 22 is mainly used to cause total internal reflection of ultra-large angle light rays L3. Therefore, the normal direction at different positions of the second side surface 223 can be reasonably set according to the different incident angles of ultra-large angle light rays L3, so that more ultra-large angle light rays L3 can reach the critical angle at the incident angle of the side surface of the second structure 22, thus enabling more ultra-large angle light rays L3 to undergo total internal reflection. Among them, the angle between most of the light rays transmitted to the fourth part 223b and the direction perpendicular to the plane of the display panel 01 is greater than the angle between most of the light rays transmitted to the third part 223a and the direction perpendicular to the plane of the display panel 01. By making the slope of the third part 223a steeper, more ultra-large angle light rays L3 reaching the third part 223 reach the critical angle; by making the slope of the fourth part 223b gentler, more ultra-large angle light rays L4 reaching the fourth part 223b reach the critical angle.

[0051] Optionally, 45°≥α3≥30°, that is, the angle between the third part 223a and the second lower surface 221 can be greater than or equal to 30° and less than or equal to 45°.

[0052] Optionally, 30°≥α4>0°, that is, the angle between the fourth part 223b and the second lower surface 221 can be greater than 0° and less than or equal to 30°.

[0053] It should be noted that the first side surface 213 of the first structure 21 can be a smooth curved surface or a stepped structure with different angles to form a first part 213a and a second part 213b with different slopes. It should also be noted that the second side surface 223 of the second structure 22 can be a smooth curved surface or a stepped structure with different angles to form a third part 223a and a second part 223b with different slopes.

[0054] In one embodiment of the present invention, the width of the spacer region 24 along the first direction X is D1, where D1 ≥ 0.5 μm. The width of the spacer region 24 along the first direction X refers to the minimum width of the spacer region 24 in the first direction X, that is, the minimum distance between the first structure 21 and the second structure 22 is greater than or equal to 0.5 μm. By setting the minimum distance between the first structure 21 and the second structure 22 to be greater than or equal to 0.5 μm, larger-angle light rays, after entering the light control unit 200, can first be incident on the third structure 23 and then transmitted to the second structure 22, reducing light loss due to passing through multiple structures with different refractive indices. These larger-angle light rays can be light rays emitted by the light-emitting device 100 with an initial transmission angle greater than the ultra-large angle light ray L3. These light rays can bypass the first structure 21 and directly enter the third structure 23 of the light control unit 200 through the spacer region 24. Furthermore, these larger-angle light rays can also include light rays emitted by the light-emitting device 100 that undergo continuous reflection between multiple film layers, resulting in a larger transmission angle when incident on the light control layer 20. This embodiment can increase the amount of light emitted from these larger angle rays at a normal viewing angle.

[0055] Figure 7 This is a partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention.

[0056] like Figure 7 As shown, the display panel 01 provided in this embodiment of the invention further includes a touch layer 40, which is located between the light-emitting layer 10 and the light-controlling layer 20. The touch layer includes a plurality of touch lines 400, and a second structure 22 covers the touch lines 400. The touch lines 400 may include touch lines constituting touch electrodes, such as touch electrodes being metal mesh structures and the touch lines being metal lines within the metal mesh. Additionally, the touch lines 400 may also include touch signal lines for transmitting touch-related signals. The second structure 22 can protect the touch lines 400, reducing the risk of water and oxygen corrosion, as well as the risk of accidental etching by the etching solution during subsequent etching processes. When the second structure 22 covers the touch lines 400, a touch insulating protective layer is no longer required, reducing the manufacturing process.

[0057] Figure 8 This is a schematic diagram of a display device provided in an embodiment of the present invention.

[0058] Based on the same inventive concept, embodiments of the present invention also provide a display device, such as... Figure 8 As shown, the display device includes the aforementioned display panel 01. Of course, Figure 8 The display device shown is for illustrative purposes only. The display device can be any electronic device with display function, such as a mobile phone, tablet computer, laptop computer, e-reader or television.

[0059] The display device provided in this embodiment of the invention has good brightness at a positive viewing angle and low power consumption.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, or mergers made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A display panel, characterized in that, include: The light-emitting layer includes multiple light-emitting devices; A light-controlling layer is located on one side of the light-emitting layer. The light-controlling layer includes multiple light-controlling units. Each light-controlling unit includes a first structure, a second structure, and a third structure. The refractive index of the first structure is greater than that of the third structure, and the refractive index of the third structure is greater than that of the second structure. Wherein, the first structure at least partially overlaps with the light-emitting device in a direction perpendicular to the plane of the display panel, the second structure is located on both sides of the first structure at least in a first direction and includes a gap between the second structure and the first structure, and the third structure is located at least on the side of the first structure away from the light-emitting layer and within the gap; the first direction is parallel to the plane of the display panel.

2. The display panel according to claim 1, characterized in that, The first structure includes a first lower surface facing the light-emitting layer, a first upper surface facing away from the light-emitting layer, and a first side surface connecting the first lower surface and the first upper surface and facing the second structure; The first side surface includes a first portion and a second portion; in a direction perpendicular to the plane of the display panel, the first portion is farther away from the light-emitting layer relative to the second portion; The angle between the first part and the first lower surface is α1, and the angle between the second part and the first lower surface is α2, where α1 < α2, α1 < 90°, and α2 < 90°.

3. The display panel according to claim 2, characterized in that, 45°≥α1≥30°。 4. The display panel according to claim 2, characterized in that, 70°≥α2≥55°。 5. The display panel according to claim 1, characterized in that, The second structure includes a second lower surface facing the light-emitting layer, a second upper surface away from the light-emitting layer, and a second side surface connecting the second lower surface and the second upper surface and facing the first structure; The second side surface includes a third portion and a fourth portion; in a direction perpendicular to the plane of the display panel, the third portion is farther away from the light-emitting layer relative to the fourth portion; The angle between the third part and the second lower surface is α3, and the angle between the fourth part and the second lower surface is α4, where α4 < α3, α3 < 90°, and α4 < 90°.

6. The display panel according to claim 5, characterized in that, 45°≥α3≥30°。 7. The display panel according to claim 5, characterized in that, 30°≥α4＞0°。 8. The display panel according to claim 1, characterized in that, In a direction perpendicular to the plane of the display panel, the orthographic projection of the first structure covers the orthographic projection of the light-emitting device.

9. The display panel according to claim 1, characterized in that, The width of the interval along the first direction is D1, where D1 ≥ 0.5 μm.

10. The display panel according to claim 1, characterized in that, The second structure surrounds the first structure.

11. The display panel according to claim 1 or 10, characterized in that, The adjacent light control units share the second structure.

12. The display panel according to claim 1, characterized in that, The display panel further includes a touch layer, which is located between the light-emitting layer and the light-controlling layer; The touch layer includes multiple touch lines, and the second structure covers the touch lines.

13. The display panel according to claim 1, characterized in that, The multiple third structures are connected to form a continuous structure on the entire surface.

14. A display device, characterized in that, Includes the display panel as described in any one of claims 1-13.

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