Display panel and display device

Abstract

The embodiments of the present invention provide a display panel and a display device, which relate to the field of display technology and are used to improve light extraction efficiency and improve color deviation. The display panel includes: a substrate; a plurality of sub-pixels located on one side of the substrate, the plurality of sub-pixels including dimming sub-pixels and non-dimming sub-pixels; a dimming structure located on the side of the sub-pixel facing away from the substrate, the dimming structure including a plurality of light extraction parts and a high refractive index layer; wherein, in the direction perpendicular to the plane where the substrate is located, the light extraction part is located on one side of the dimming sub-pixel, and the distance between the light extraction part and the nearest dimming sub-pixel is L1, and the distance between the light extraction part and the nearest non-dimming sub-pixel is L2, L1 < L2; the high refractive index layer is located on the side of the light extraction part facing away from the substrate and covers the sub-pixels and the light extraction part, and the refractive index of the high refractive index layer is greater than the refractive index of the light extraction part.

Description

Technical field

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

[0002] With the continuous development of display technology, organic light-emitting diode (OLED) display panels have been widely used in various electronic devices due to their advantages such as self-luminescence, wide viewing angle, high contrast and low energy consumption.

[0003] However, existing OLED display panels have problems such as low light extraction efficiency and color shift, which seriously affect display performance. [Summary of the invention]

[0004] In view of this, embodiments of the present invention provide a display panel and a display device to effectively improve light extraction efficiency and improve color shift.

[0005] In one aspect, an embodiment of the present invention provides a display panel, including:

[0006] substrate;

[0007] A plurality of sub-pixels located on one side of the substrate, wherein the plurality of sub-pixels include dimming sub-pixels and non-dimming sub-pixels;

[0008] a dimming structure located on a side of the sub-pixel facing away from the substrate, the dimming structure comprising a plurality of light extraction portions and a high refractive index layer;

[0009] Wherein, in a direction perpendicular to the plane of the substrate, the light extraction portion is located on one side of the dimming sub-pixel, and the distance between the light extraction portion and the dimming sub-pixel closest thereto is L1, and the distance between the light extraction portion and the non-dimming sub-pixel closest thereto is L2, L1<L2;

[0010] The high refractive index layer is located on a side of the light extraction portion facing away from the substrate and covers the sub-pixel and the light extraction portion. The refractive index of the high refractive index layer is greater than that of the light extraction portion.

[0011] On the other hand, an embodiment of the present invention provides a display device including the above-mentioned display panel.

[0012] One of the above technical solutions has the following beneficial effects:

[0013] In an embodiment of the present invention, for the dimming sub-pixel, since the light extraction portion is located on one side of the dimming sub-pixel and the distance between the light extraction portion and the dimming sub-pixel is relatively close, the light emitted by the dimming sub-pixel can be transmitted to the light extraction portion more. Based on the refractive index difference between the high refractive index layer and the light extraction portion, the interface where the high refractive index layer contacts the light extraction portion, that is, the side wall of the light extraction portion, forms a total reflection interface. When the light emitted by the dimming sub-pixel reaches the interface, it will be totally reflected on the interface, thereby changing its transmission direction, so that the light that was originally unable to be emitted through the panel can finally be emitted from the display panel after being regulated by the dimming structure. It can be seen that the embodiment of the present invention can increase the display brightness of the dimming sub-pixel by using the dimming structure to improve the light extraction efficiency of the dimming sub-pixel, so there is no need to increase the driving current provided to the dimming sub-pixel, which not only reduces the power consumption of the display panel, but also effectively reduces the current density of the dimming sub-pixel and reduces its life decay rate.

[0014] As for the non-dimming sub-pixel, since the non-dimming sub-pixel is far away from the light extraction part, the light emitted by the non-dimming sub-pixel is difficult to be transmitted to the light extraction part. The light extraction part has almost no effect on the light output of the non-dimming sub-pixel, and thus has no effect on the life decay rate of the non-dimming sub-pixel.

[0015] Therefore, in this embodiment of the present invention, by differentiating the distance between the light extraction unit and different sub-pixels, the light extraction unit can be used to adjust the light extraction efficiency of different sub-pixels to varying degrees. The technical solution provided by this embodiment of the present invention not only effectively improves the light extraction efficiency of the display panel, but also makes the lifetime decay rate of different sub-pixels more consistent, thereby effectively improving color shift.

Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of light transmission in the prior art;

[0018] Figure 2 A top view of a display panel provided by an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Cross-sectional view along the A1-A2 direction;

[0020] Figure 4A schematic diagram of light transmission provided by an embodiment of the present invention;

[0021] Figure 5 Another top view of the display panel provided by the embodiment of the present invention;

[0022] Figure 6 A schematic structural diagram of a light extraction unit provided by an embodiment of the present invention;

[0023] Figure 7 Another schematic diagram of light transmission provided by an embodiment of the present invention;

[0024] Figure 8 Another structural schematic diagram of a light extraction unit provided by an embodiment of the present invention;

[0025] Figure 9 A schematic diagram of another structure of the light extraction unit provided by an embodiment of the present invention;

[0026] Figure 10 A schematic diagram of another structure of a light extraction unit provided by an embodiment of the present invention;

[0027] Figure 11 A schematic diagram of another structure of a light extraction unit provided by an embodiment of the present invention;

[0028] Figure 12 A schematic diagram of another arrangement of sub-pixels provided in an embodiment of the present invention;

[0029] Figure 13 A schematic diagram of another arrangement of sub-pixels provided in an embodiment of the present invention;

[0030] Figure 14 A schematic diagram of an arrangement position of a light extraction portion and a first supporting column provided in an embodiment of the present invention;

[0031] Figure 15 for Figure 14 Cross-sectional view along the B1-B2 direction;

[0032] Figure 16 A schematic diagram of another arrangement position of the light extraction portion and the first support column provided in an embodiment of the present invention;

[0033] Figure 17 for Figure 16 Cross-sectional view along the C1-C2 direction;

[0034] Figure 18 A schematic structural diagram of a display device provided by an embodiment of the present invention. [Specific implementation method]

[0035] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] It should be understood that the embodiments described are only a portion of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0037] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "an", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0038] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0039] In the film layer structure of the existing display panel, such as Figure 1 As shown, Figure 1 This is a schematic diagram of light transmission in the prior art. The sub-pixel 101 is covered with multiple structures such as the encapsulation layer 102, the polarizer 103, and the cover plate 104. Therefore, the light emitted by the sub-pixel 101 needs to undergo reflection and refraction through multiple film layers when it is transmitted outward. Due to the differences in the optical properties of different film layer materials, light will be lost inside the display panel in the form of total reflection during transmission. For example, light will be fully reflected at the interface between the cover plate 104 and the air, resulting in a large amount of energy loss, and the light that can finally be emitted from the display panel will only account for about 15% of the light emitted by the light-emitting device, resulting in a low light extraction efficiency of the display panel.

[0040] In this regard, an embodiment of the present invention provides a display panel that can not only effectively improve the light extraction efficiency of the display panel, but also reduce the lifetime attenuation difference between different sub-pixels, thereby effectively solving the color shift problem.

[0041] like Figure 2 and Figure 3 As shown, Figure 2 A top view of a display panel provided by an embodiment of the present invention, Figure 3 for Figure 2 In the cross-sectional view along the A1 - A2 direction, the display panel includes a substrate 1 , a plurality of sub-pixels 2 located on one side of the substrate 1 , and a dimming structure 3 located on the side of the sub-pixels 2 facing away from the substrate 1 .

[0042] The multiple sub-pixels 2 include a dimming sub-pixel 4 and a non-dimming sub-pixel 5. It should be noted that, due to the influence of the properties of the luminescent material, the luminous efficiency of different sub-pixels 2 is different. In the embodiment of the present invention, the luminous efficiency of the dimming sub-pixel 4 may be lower than the luminous efficiency of the non-dimming sub-pixel 5.

[0043] The dimming structure 3 includes multiple light extraction sections 6 and a high-refractive-index layer 7. The light extraction sections 6 are located on one side of the dimming sub-pixel 4, perpendicular to the plane of the substrate 1. The distance between the light extraction section 6 and the nearest dimming sub-pixel 4 is L1, and the distance between the light extraction section 6 and the nearest non-dimming sub-pixel 5 is L2, where L1 < L2. The high-refractive-index layer 7 is located on the side of the light extraction section 6 facing away from the substrate 1 and covers the sub-pixels 2 and the light extraction section 6. The refractive index of the high-refractive-index layer 7 is greater than that of the light extraction section 6.

[0044] It should be noted that, see again Figure 3 The display panel includes a pixel region 41 and a non-pixel region 42. The display panel also includes a pixel definition layer 43. The pixel definition layer 43 includes an opening 44 for defining the pixel region 41. From another perspective, the sub-pixel 2 in the embodiment of the present invention can be understood as a light-emitting layer in a light-emitting device. The sub-pixel 2 is located in the opening 44 of the pixel definition layer 43, that is, in the pixel region 41. Therefore, the positional relationship and distance relationship between the light extraction portion 6 and the sub-pixel 2 mentioned later can be understood as the positional relationship and distance relationship between the light extraction portion 6 and the opening 44 of the pixel definition layer 43.

[0045] In addition, it should be noted that the embodiment of the present invention stated that "in the direction perpendicular to the plane where the substrate 1 is located, the light extraction portion 6 is located on one side of the dimming sub-pixel 4 and the distance between the light extraction portion 6 and the sub-pixel 2" can be understood as "in the direction perpendicular to the plane where the substrate 1 is located, the orthographic projection of the light extraction portion 6 is located on one side of the orthographic projection of the dimming sub-pixel 4 and the distance between the orthographic projection of the light extraction portion 6 and the orthographic projection of the sub-pixel 2".

[0046] In the prior art, for sub-pixels 2 with relatively low luminous efficiency, in order to enable such sub-pixels 2 to have a higher display brightness, the driving current flowing to such sub-pixels 2 is usually increased. However, this will cause the current density of such sub-pixels 2 to be very high, which in turn causes the lifespan to decay very quickly, resulting in obvious lifespan decay differences between such sub-pixels 2 and other sub-pixels 2, causing serious color deviation in the display panel.

[0047] In the embodiment of the present invention, for the dimming sub-pixel 4, since the light extraction portion 6 is located on one side of the dimming sub-pixel 4 and the distance between the light extraction portion 6 and the dimming sub-pixel 4 is relatively close, the light emitted by the dimming sub-pixel 4 can be transmitted to the light extraction portion 6 more. Based on the refractive index difference between the high refractive index layer 7 and the light extraction portion 6, the interface where the high refractive index layer 7 and the light extraction portion 6 contact, that is, the side wall of the light extraction portion 6, forms a total reflection interface. When the light emitted by the dimming sub-pixel 4 reaches this interface, it will be totally reflected on this interface, thereby changing its transmission direction, so that the light that was originally unable to be emitted through the panel can finally be emitted from the display panel after being modulated by the dimming structure 3. It can be seen that the embodiment of the present invention can increase the display brightness of the dimming sub-pixel 4 by using the dimming structure 3 to improve the light extraction efficiency of the dimming sub-pixel 4. Therefore, there is no need to increase the driving current provided to the dimming sub-pixel 4, which not only reduces the power consumption of the display panel, but also effectively reduces the current density of the dimming sub-pixel 4 and reduces its life decay rate.

[0048] As for the non-dimming sub-pixel 5, since the non-dimming sub-pixel 5 is far away from the light extraction part 6, the light emitted by the non-dimming sub-pixel 5 is difficult to be transmitted to the light extraction part 6. The light extraction part 6 has almost no effect on the light output of the non-dimming sub-pixel 5, and thus has no effect on the life decay rate of the non-dimming sub-pixel 5.

[0049] Therefore, in the embodiment of the present invention, by differentiating the distances between the light extraction unit 6 and different sub-pixels 2, the light extraction unit 6 can be used to adjust the light extraction efficiency of different sub-pixels 2 to varying degrees. The technical solutions provided by the embodiment of the present invention not only effectively improve the light extraction efficiency of the display panel, but also make the lifetime decay rates of different sub-pixels 2 more consistent, thereby effectively improving color shift.

[0050] In one possible embodiment, see Figure 3 The display panel also includes an encapsulation layer 8 located between the sub-pixel 2 and the dimming structure 3, the encapsulation layer 8 includes a first inorganic encapsulation layer 9, an organic encapsulation layer 10 located on the side of the first inorganic encapsulation layer 9 facing away from the substrate 1, and a second inorganic encapsulation layer 11 located on the side of the organic encapsulation layer 10 facing away from the substrate 1.

[0051] like Figure 4 As shown, Figure 4 A light transmission diagram provided by an embodiment of the present invention is provided. The incident angle of the edge light emitted by the dimming sub-pixel 4 near the light extraction portion 6 when entering the organic encapsulation layer 10 from the first inorganic encapsulation layer 9 is θ1. If this part of the edge light is to be able to finally be emitted from the display panel, θ1 satisfies: θ1∈(θ air ,δ2), where θ airThe maximum incident angle that the edge light can have when it can be emitted through the interface between the display panel and the air without being reflected by the light extraction part 6, θ air Can be n1 is the refractive index of the dimming sub-pixel 4, which can also be understood as the refractive index of the luminescent material corresponding to the dimming sub-pixel 4. δ2 is the total reflection angle corresponding to the edge light incident from the first inorganic encapsulation layer 9 to the organic encapsulation layer 10. n3 is the refractive index of the first inorganic encapsulation layer 9 , and n4 is the refractive index of the organic encapsulation layer 10 .

[0052] Assuming that the total reflection angle corresponding to the light incident from the high refractive index layer 7 to the light extraction portion 6 is δ1, n6 is the refractive index of the light extraction portion 6, and n7 is the refractive index of the high-refractive-index layer 7. The incident angle θ6 at which light is reflected from the sidewalls of the light extraction portion 6 is (90° - θ5) + (90° - θ0). The light extraction portion 6 includes a bottom surface 12 adjacent to the substrate 1 and a sidewall 13 intersecting the bottom surface 12. θ0 is the angle between the sidewall 13 and the bottom surface 12, and θ5 is the angle of incidence of light when it enters the high-refractive-index layer 7 from the second inorganic encapsulation layer 11. To ensure that all light is reflected from the sidewalls 13 of the light extraction portion 6, θ6 must satisfy the following equation: θ6∈(δ1, 90°).

[0053] According to the refraction formula, sinθ4×n5=sinθ5×n7, so: Here, θ4 is the emission angle of light when entering the second inorganic encapsulation layer 11 from the organic encapsulation layer 10 , and n5 is the refractive index of the second inorganic encapsulation layer 11 .

[0054] Since the refractive index of the first inorganic encapsulation layer 9 and the second inorganic encapsulation layer 11 is the same, the exit angle θ4 when the light enters the second inorganic encapsulation layer 11 from the organic encapsulation layer 10 is equal to the incident angle θ1 when the light enters the organic encapsulation layer 10 from the first inorganic encapsulation layer 9. It can be deduced Combining the relationship between θ5 and θ6, we can conclude that

[0055] Combined with θ1∈(θ air , δ2) and The following four situations can be drawn:

[0056] The first case: When hour,

[0057] The second case: When hour,

[0058] The third situation: When hour,

[0059] The fourth situation: When θ1∈(θ air , δ2).

[0060] When θ1 satisfies the above four conditions, the edgemost light emitted by the dimming sub-pixel 4 can be emitted through the light-emitting interface of the display panel.

[0061] For further information, see Figure 4 In a direction perpendicular to the plane of the display panel, the distance L between the light extraction portion 6 and the dimming sub-pixel 4 is L = d1 × tanθ1 + d2 × tanθ3 + d3 × tanθ4, where d1 is the thickness of the first inorganic encapsulation layer 9, d2 is the thickness of the organic encapsulation layer 10, d3 is the thickness of the second inorganic encapsulation layer 11, and θ3 is the incident angle of light when it enters the second inorganic encapsulation layer 11 from the organic encapsulation layer 10. Since θ4 = θ1, L = (d1 + d3) × tanθ1 + d2 × tanθ3.

[0062] Among them, Sinθ3×n4=sinθ4×n5, Available,

[0063] Combining the range of θ1 determined above, substituting θ1 into the formula of L, we can see that L has a maximum value L max and the minimum value L min , set L to L max and L min When , the light extraction portion 6 can reduce the shielding of the edge light emitted by the photodiode sub-pixel 4, so that more edge light can be reflected by the side wall 13 of the light extraction portion 6 and finally emitted through the light output interface of the display panel.

[0064] That is, in the embodiment of the present invention, in the direction perpendicular to the plane where the display panel is located, L1 and L2 can satisfy: L min ≤L1≤L max , L2>L max .

[0065] Specifically, combined with the first case above, when When L max and L min Combined and The maximum and minimum values ​​of L that can be obtained.

[0066] Combined with the second case above, when When L max and L min Combined and The maximum and minimum values ​​of L that can be obtained.

[0067] Combined with the third case above, when When L max and L min Combined and The maximum and minimum values ​​of L that can be obtained.

[0068] Combined with the fourth situation above, when L max and L min Combined and θ1∈(θ air ,δ2) after the maximum and minimum values ​​of L can be obtained.

[0069] In one possible implementation, Figure 5 As shown, Figure 5 This is another top view of the display panel provided by an embodiment of the present invention, in which the light extraction portion 6 includes a first extraction portion 14 and a second extraction portion 15. In a direction perpendicular to the plane of the substrate 1, the first extraction portion 14 is located on one side of the dimming sub-pixel 4 in the first direction x, and the distance between the first extraction portion 14 and the dimming sub-pixel 4 closest thereto is less than the distance between the first extraction portion 14 and the non-dimming sub-pixel 5 closest thereto. In a direction perpendicular to the plane of the substrate 1, the second extraction portion 15 is located on one side of the dimming sub-pixel 4 in the second direction y, which intersects the first direction x, and the distance between the second extraction portion 15 and the dimming sub-pixel 4 closest thereto is less than the distance between the second extraction portion 15 and the non-dimming sub-pixel 5 closest thereto.

[0070] By respectively arranging a light extraction portion 6 on one side of the dimming sub-pixel 4 in the first direction x and the second direction y, the first extraction portion 14 can improve the light extraction efficiency of the light emitted by the dimming sub-pixel 4 at a 90° orientation, and the second extraction portion 15 can improve the light extraction efficiency of the light emitted by the dimming sub-pixel 4 at a 0° orientation, thereby improving the uniformity of the degree of improvement in the light extraction efficiency of light in different orientations emitted by the dimming sub-pixel 4.

[0071] In one possible implementation, Figure 6 As shown, Figure 6This is a structural diagram of a light extraction unit 6 provided by an embodiment of the present invention, in which at least two dimming sub-pixels 4 are adjacently arranged in a first direction x.

[0072] The light extraction portion 6 includes a first extraction portion 14 . In a direction perpendicular to the plane of the substrate 1 , the first extraction portion 14 is located between at least two adjacent dimming sub-pixels 4 , and in a first direction x, the first extraction portion 14 does not overlap with the non-dimming sub-pixel 5 .

[0073] Based on the above-mentioned setting position of the first extraction portion 14, in the first direction x, the first extraction portion 14 does not overlap with the non-dimming sub-pixel 5. Therefore, the first extraction portion 14 is far away from the non-dimming sub-pixel 5. At this time, the first extraction portion 14 can only improve the light extraction efficiency of the dimming sub-pixel 4 without affecting the light extraction efficiency of the non-dimming sub-pixel 5, thereby effectively improving the difference in lifespan attenuation between different sub-pixels 2. In addition, because the first extraction portion 14 is located between two adjacent dimming sub-pixels 4, a single first extraction portion 14 can improve the light extraction efficiency of both dimming sub-pixels 4. While ensuring that the dimming sub-pixel 4 has a high light extraction efficiency, the number of light extraction portions 6 required to be set in the display panel is reduced.

[0074] Further, see again Figure 6 In a direction perpendicular to the plane of substrate 1, dimming sub-pixel 4 includes a first pixel edge 16 extending along a second direction y, where second direction y intersects first direction x. The length of first pixel edge 16 is b. First extraction portion 14 includes a first control edge 17 extending along second direction y, where the length of first control edge 17 is a, where a≤b. Furthermore, in the first direction x, the orthographic projection of first control edge 17 lies within the orthographic projection of first pixel edge 16.

[0075] Such a setting can ensure that the first extraction part 14 significantly improves the light output efficiency of the dimming sub-pixel 4, while ensuring that there is a sufficient distance between the first extraction part 14 and the non-dimming sub-pixels 5 on both sides, thereby avoiding the first extraction part 14 from affecting the light output of the non-dimming sub-pixel 5 to a greater extent, and thus better reducing the life attenuation difference between the dimming sub-pixel 4 and the non-dimming sub-pixel 5.

[0076] In addition, combined Figure 4 As well as the above analysis of the θ1 angle range, Figure 7 As shown, Figure 7 Another light transmission schematic diagram provided in an embodiment of the present invention, the distance between points AB in the dimming sub-pixel 4 is d, wherein point A emits light ①, point B emits light ②, light ① and light ② are parallel, and light ① is reflected at the junction of the side wall 13 and the top surface 50 of the light extraction portion 6, while light ② is reflected at the junction of the side wall 13 and the bottom surface 12 of the light extraction portion 6.

[0077] d=h×(tan(180°-θ5-θ0)-cotθ0), where h is the thickness of the light extraction portion 6 in the direction perpendicular to the plane of the substrate 1. Furthermore, we can obtain the functional relationship between d and h, θ0 and θ1: d=d(h, θ0, θ1).

[0078] At this time, the light extraction efficiency improvement rate of the light emitted by the light-modulating sub-pixel 4 by the light extraction unit 6 is η. Among them, in the direction perpendicular to the plane of the substrate 1, the side of the dimming sub-pixel 4 close to the light extraction portion 6 is the first side, the side intersecting the first side is the second side, D1 is the length of the first side, D2 is the length of the second side, w is the length of the side of the light extraction portion 6 close to the dimming sub-pixel 4, E(θ1) represents the spatial energy distribution of the light emitted by the dimming sub-pixel 4, θ1 max and θ1 min are the maximum and minimum values ​​of θ1 determined in the above four cases respectively.

[0079] Combine Figure 6 For the first extraction unit 14, w in the formula is the length a of the first control edge 17, D1 in the formula is the length of the first pixel edge 16, that is, D1 = b, and D2 is the length of the second pixel edge 18 intersecting with the first pixel edge 16, that is, D2 = e. Substituting it into the formula, it can be seen that the first extraction unit 14 improves the light extraction efficiency of the light-modulating sub-pixel 4 by

[0080] To further increase the improvement rate η1 of the light extraction efficiency of the light-modulating sub-pixel 4 by the first extraction portion 14, a = b can be set. In this case, in the first direction x, the orthographic projection of the first control edge 17 can overlap with the orthographic projection of the first pixel edge 16.

[0081] In one possible implementation, Figure 9 As shown, Figure 9 This is another structural schematic diagram of the light extraction unit 6 provided in an embodiment of the present invention. In the second direction y, the dimming sub-pixel 4 overlaps with the non-dimming sub-pixel 5. The light extraction unit 6 includes a second extraction unit 15. In a direction perpendicular to the plane of the substrate 1, the second extraction unit 15 is located on one side of the dimming sub-pixel 4 in the second direction y, and in the second direction y, the second extraction unit 15 does not overlap with the non-dimming sub-pixel 5.

[0082] Based on the setting position of the second extraction part 15, the second extraction part 15 is far away from the non-dimming sub-pixel 5. At this time, the second extraction part 15 can only improve the light output efficiency of the dimming sub-pixel 4 without affecting the light output efficiency of the non-dimming sub-pixel 5, thereby effectively improving the difference in lifespan attenuation between different sub-pixels 2.

[0083] Further, see again Figure 8 The non-dimming sub-pixel 5 includes a first-color non-dimming sub-pixel 19 and a second-color non-dimming sub-pixel 20. The dimming sub-pixel 4 includes a first dimming sub-pixel 21. In the second direction y, the first dimming sub-pixel 21 overlaps with the first-color non-dimming sub-pixel 19 and the second-color non-dimming sub-pixel 20. The second extraction portion 15 includes a second A extraction portion 22. In a direction perpendicular to the plane of the substrate 1, the second A extraction portion 22 is located on one side of the first dimming sub-pixel 21 in the second direction y. In the second direction y, the second A extraction portion 22 is located in the gap between the first-color non-dimming sub-pixel 19 and the second-color non-dimming sub-pixel 20.

[0084] In one setting, see again Figure 8 , each dimming sub-pixel 4 overlaps with the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20 in the second direction y. In this case, a second A extraction portion 22 may be provided on one side of each dimming sub-pixel 4 in the second direction y. Alternatively, in another configuration, as Figure 9 As shown, Figure 9 This is another structural schematic diagram of the light extraction portion 6 provided in an embodiment of the present invention. Part of the dimming sub-pixels 4 overlap with the first color non-dimming sub-pixels 19 and the second color non-dimming sub-pixels 20 in the second direction y, while part of the dimming sub-pixels 4 only overlap with the first color non-dimming sub-pixels 19. At this time, the second A extraction portion 22 is located on one side of the part of the dimming sub-pixels 4 that overlaps with both the first color non-dimming sub-pixels 19 and the second color non-dimming sub-pixels 20.

[0085] In addition, it should be noted that, in order to further slow down the life decay of the dimming sub-pixel 4, the area of ​​the dimming sub-pixel 4 can be larger than the area of ​​the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20. As for the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20, the areas of the two can be Figure 8 is equal to the one shown; or it can be Figure 9 The unequal values ​​shown.

[0086] Such a setting can ensure that the second A extraction part 22 significantly improves the light output efficiency of the first dimming sub-pixel 21, while ensuring that the second A extraction part 22 is sufficiently spaced from the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20, thereby avoiding the second A extraction part 22 from affecting the light output of the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20 to a greater extent, thereby better reducing the life attenuation difference between the first dimming sub-pixel 21 and the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20.

[0087] Further, see again Figure 8 and Figure 9 In a direction perpendicular to the plane of the substrate 1, the spacing between the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20 is m1; the second A extraction portion 22 includes a second control edge 23 extending along the first direction x, the first direction x intersects the second direction y, and the length of the second control edge 23 is c, c=m1.

[0088] Combined with the above derivation of the formula for improving efficiency η, it can be seen that for the second A extraction part 22, w in the formula is the length c of the second control edge 23, D1 in the formula is the length of the second pixel edge 18, that is, D1 = e, and D2 is the length of the first pixel edge 16 intersecting with the second pixel edge 18, that is, D2 = b. Substituting it into the formula, it can be seen that the improvement rate of the light extraction efficiency of the first dimming sub-pixel 21 by the second A extraction part 22 is

[0089] On the premise that the second A extraction unit 22 does not overlap with the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20 in the second direction y, setting c to m1 can maximize the value of c, thereby increasing the improvement rate η2 of the light output efficiency of the first dimming sub-pixel 21 by the second A extraction unit 22 to a greater extent.

[0090] In one possible implementation, see again Figure 9 The non-dimming sub-pixel 5 includes a first-color non-dimming sub-pixel 19 and a second-color non-dimming sub-pixel 20. The dimming sub-pixel 4 includes a second dimming sub-pixel 24. In the second direction y, the second dimming sub-pixel 24 overlaps only with the first-color non-dimming sub-pixel 19. The second extraction portion 15 includes a second B extraction portion 25. In a direction perpendicular to the plane of the substrate 1, the second B extraction portion 25 is located on one side of the second dimming sub-pixel 24 in the second direction y, and in the second direction y, the second B extraction portion 25 does not overlap with the first-color non-dimming sub-pixel 19.

[0091] Such a setting can ensure that the second B extraction part 25 significantly improves the light output efficiency of the second dimming sub-pixel 24, while ensuring that the second B extraction part 25 is separated from the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20 by a sufficient distance, thereby avoiding the second B extraction part 25 from affecting the light output of the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20 to a greater extent, and thus better reducing the life attenuation difference between the second dimming sub-pixel 24 and the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20.

[0092] Further, see again Figure 9 In a direction perpendicular to the plane of substrate 1, second dimming sub-pixel 24 includes a first pixel edge 16 extending along a second direction y, where second direction y intersects first direction x. The distance between the extension of first pixel edge 16 and first color non-dimming sub-pixel 19 is m2. In a direction perpendicular to the plane of substrate 1, second B extraction portion 25 includes a third control edge 26 extending along the first direction x. The length of third control edge 26 is d, where d=m2.

[0093] Combined with the above derivation of the formula for improving efficiency, it can be seen that for the second B extraction part 25, w in the formula is the length d of the third control edge 26, D1 in the formula is the length of the second pixel edge 18, that is, D1 = e, and D2 is the length of the first pixel edge 16, that is, D2 = b. Substituting it into the formula, it can be seen that the improvement rate of the light extraction efficiency of the second dimming sub-pixel 24 by the second B extraction part 25 is

[0094] On the premise that the second B extraction unit 25 does not overlap with the first color non-dimming sub-pixel 19 and the second color non-dimming sub-pixel 20 in the second direction y, setting d to m2 can maximize the value of d, thereby increasing the improvement rate η3 of the light output efficiency of the second dimming sub-pixel 24 by the second B extraction unit 25 to a greater extent.

[0095] In one possible embodiment, combining Figure 10 The dimming sub-pixel 4 includes a blue sub-pixel 27, and the non-dimming sub-pixel 5 includes a red sub-pixel 28 and a green sub-pixel 29. For example, the first non-dimming sub-pixel 19 is the green sub-pixel 29, and the second non-dimming sub-pixel 20 is the red sub-pixel 28.

[0096] Affected by the characteristics of the luminescent material, the luminous efficiency of the blue sub-pixel 27 is low, and thus the lifespan decay rate of the blue sub-pixel 27 is fast. In an embodiment of the present invention, by designing the dimming sub-pixel 4 as the blue sub-pixel 27, the dimming structure 3 can be used to significantly improve the light extraction efficiency of the blue sub-pixel 27, thereby increasing its display brightness. In this way, there is no need to increase the blue light brightness by increasing the driving current flowing into the blue sub-pixel 27, and then when controlling the blue sub-pixel 27 to emit light, the driving current flowing into the blue sub-pixel 27 can be reduced, the current density of the blue sub-pixel 27 can be reduced, and the lifespan of the blue sub-pixel 27 can be extended. At the same time, the dimming structure 3 will not affect the light extraction of the red sub-pixel 28 and the green sub-pixel 29, and thus can more effectively improve the lifespan decay uniformity between the blue sub-pixel 27 and the red sub-pixel 28 and the green sub-pixel 29, thereby effectively improving color deviation.

[0097] In one possible implementation, Figure 10 and Figure 11 As shown, Figure 10 This is another structural diagram of the light extraction unit 6 provided in an embodiment of the present invention. Figure 11 This is another structural schematic diagram of the light extraction portion 6 provided in an embodiment of the present invention, wherein the display panel includes a first pixel column 30 and a second pixel column 31 arranged along a second direction y, the first pixel column 30 includes green sub-pixels 29 and red sub-pixels 28 alternately arranged along a first direction x, the second pixel column 31 includes a plurality of blue pixel units 32 arranged along the first direction x, wherein the blue pixel unit 32 includes two blue sub-pixels 27 arranged along the first direction x, the spacing between the two blue sub-pixels 27 in the blue pixel unit 32 is smaller than the spacing between two adjacent blue pixel units 32, and the second direction y intersects with the first direction x.

[0098] The light extraction portion 6 includes a first extraction portion 14 and a second extraction portion 15. In a direction perpendicular to the plane of the substrate 1, the first extraction portion 14 is located between two adjacent blue pixel units 32. In a first direction x, the first extraction portion 14 does not overlap with the red sub-pixel 28 and the green sub-pixel 29. In a direction perpendicular to the plane of the substrate 1, the second extraction portion 15 is located on one side of the blue sub-pixel 27 in a second direction y. In the second direction y, the second extraction portion 15 does not overlap with the red sub-pixel 28 and the green sub-pixel 29.

[0099] Among them, see Figure 10 The second extraction unit 15 may include a second A extraction unit 22, or, see Figure 11The second extraction portion 15 may include a second A extraction portion 22 and a second B extraction portion 25. The length setting method of the control edge of the second A extraction portion 22 and the second B extraction portion 25 has been described in the above embodiment and will not be repeated here.

[0100] It is understandable that in the manufacturing process of the display panel, sub-pixels 2 of the same color are formed using the same high-precision metal mask (FMM), which has openings corresponding to the sub-pixels 2. In general, one opening in the high-precision metal mask corresponds to one sub-pixel 2. However, based on the above-mentioned arrangement of the sub-pixels 2, for the high-precision metal mask used to form the blue sub-pixels 27, a larger opening can be set to correspond to both blue sub-pixels 27 in one blue pixel unit 32. In this case, the light-emitting layers in the two blue sub-pixels 27 are continuous, which can also reduce the lifetime attenuation of the blue sub-pixels 27.

[0101] Based on the above arrangement, since there is a large distance between two adjacent blue pixel units 32, placing the first extraction portion 14 between the two adjacent blue pixel units 32 can increase the design size of the first extraction portion 14 in the first direction x, thereby increasing the first extraction portion 14's control over the light output of the blue sub-pixel 27. At the same time, this arrangement also prevents the first extraction portion 14 and the second extraction portion 15 from affecting the light output of the red sub-pixel 28 and the green sub-pixel 29, thereby further improving the uniformity of the lifetime decay of the three color sub-pixels 2.

[0102] It should be noted that Figure 10 and Figure 11 This is only a schematic illustration of two arrangements of sub-pixels 2. In other optional embodiments of the present invention, other arrangements of sub-pixels 2 may also be used. Figure 12 As shown, Figure 12 This is another schematic diagram of the arrangement of sub-pixels 2 provided in an embodiment of the present invention. The sub-pixels 2 can adopt a "normal" arrangement: the display panel may include red pixel columns 33, green pixel columns 34, and blue pixel columns 35 arranged alternately along the second direction y, wherein the red pixel columns 33 include a plurality of red sub-pixels 28 arranged along the first direction x, the green pixel columns 34 include a plurality of green sub-pixels 29 arranged along the first direction x, and the blue pixel columns 35 include a plurality of blue sub-pixels 27 arranged along the first direction x. Based on this arrangement, the light extraction portion 6 is located on one side of the blue sub-pixel 27 in the first direction x and / or the second direction y, and the distance between the light extraction portion 6 and the blue sub-pixel 27 closest to it is smaller than the distance between the light extraction portion 6 and the red sub-pixel 28 and green sub-pixel 29 closest to it.

[0103] Or, as Figure 13 As shown, Figure 13 This is another schematic diagram of an arrangement of sub-pixels 2 provided in an embodiment of the present invention. Sub-pixels 2 may also adopt a "Windmill" arrangement: a green sub-pixel 29 is located within a first virtual trapezoid 36, and two red sub-pixels 28 and two blue sub-pixels 27 surrounding the green sub-pixel 29 are respectively located at the four corners of the first virtual trapezoid 36. That is, the green sub-pixel 29 and the two red sub-pixels 28 and two blue sub-pixels 27 arranged around it form a windmill-shaped structure. And / or, the red sub-pixel 28 is located within a second virtual trapezoid 37, and the four green sub-pixels 29 surrounding the red sub-pixel 28 are respectively located at the four corners of the second virtual trapezoid 37. That is, the red sub-pixel 28 and the four green sub-pixels 29 arranged around it form a windmill-shaped structure. And / or, the blue sub-pixel 27 is located inside the third virtual trapezoid 38, and the four green sub-pixels 29 surrounding the blue sub-pixel 27 are respectively located at the four vertices of the third virtual trapezoid 38, that is, the blue sub-pixel 27 and the four green sub-pixels 29 arranged around it also form a windmill-shaped structure. Based on this arrangement, the light extraction portion 6 is located on one side of the blue sub-pixel 27, and the distance between the light extraction portion 6 and the blue sub-pixel 27 closest to it is less than the distance between the light extraction portion 6 and the red sub-pixel 28 and the green sub-pixel 29 closest to it. Exemplarily, the light extraction portion 6 is located on one side of the blue sub-pixel 27 in the third direction, which is the arrangement direction of the blue sub-pixel and the green sub-pixel 29 adjacent to it, and in the third direction, the light extraction portion 6 and the green sub-pixel 29 do not overlap.

[0104] In one possible implementation, Figure 14 and Figure 15 As shown, Figure 14 A schematic diagram of the arrangement position of the light extraction portion 6 and the first support column 40 provided in an embodiment of the present invention is shown. Figure 15 for Figure 14 In the cross-sectional view along the B1-B2 direction, the display panel also includes a support column 39 located on one side of the substrate 1, and the support column 39 includes a first support column 40; in the direction perpendicular to the plane of the substrate 1, the first support column 40 is located on one side of the dimming sub-pixel 4, and the first support column 40 at least partially overlaps with the light extraction portion 6.

[0105] It should be noted that, see Figure 15 In a direction perpendicular to the plane of the substrate 1 , the support pillar 39 and the light extraction portion 6 are both located between the openings 44 of two adjacent pixel definition layers 43 , that is, located in the non-pixel area 42 .

[0106] The support columns 39 are typically used to stabilize the cell thickness and support the mask for forming the sub-pixels 2 during the display panel manufacturing process. The support columns 39 are generally located on the side of the pixel definition layer 43 facing away from the substrate 1. In an embodiment of the present invention, by at least partially overlapping the first support columns 40 with the light extraction portion 6, the light extraction portion 6 can be elevated by the first support columns 40, allowing more light emitted by the dimming sub-pixels 4 to be incident on the sidewalls of the light extraction portion 6. Furthermore, the arrangement of at least partially overlapping the first support columns 40 with the light extraction portion 6 is also suitable for panel designs with smaller spacing between adjacent sub-pixels 2, making it more suitable for display panels with high pixel density.

[0107] In one possible implementation, Figure 16 and Figure 17 As shown, Figure 16 This is a schematic diagram of another arrangement position of the light extraction portion 6 and the first support column 40 provided in an embodiment of the present invention. Figure 17 for Figure 16 In the cross-sectional view along the C1 - C2 direction, the display panel further includes a support column 39 located on one side of the substrate 1 , and the support column 39 includes a first support column 40 .

[0108] In the direction perpendicular to the plane of the substrate 1, the first support column 40 is located on one side of the dimming sub-pixel 4, and the distance between the light extraction portion 6 and the dimming sub-pixel 4 closest to it is smaller than the distance between the first support column 40 and the dimming sub-pixel 4 closest to it, thereby reducing the distance between the light extraction portion 6 and the dimming sub-pixel 4 as much as possible, so that the light extraction portion 6 can improve the light output efficiency of the dimming sub-pixel 4 to a greater extent.

[0109] It should be noted that the distance between the light extraction portion 6 , the first support column 40 and the dimming sub-pixel 4 specifically refers to the distance between the light extraction portion 6 , the first support column 40 and the opening 44 of the pixel definition layer 43 where the dimming sub-pixel 4 is located.

[0110] Based on the same inventive concept, an embodiment of the present invention further provides a display device, such as Figure 18 As shown, Figure 18 This is a schematic diagram of a structure of a display device provided by an embodiment of the present invention, and the display device includes the above-mentioned display panel 100. The specific structure of the display panel 100 has been described in detail in the above-mentioned embodiment and will not be repeated here. Figure 18 The display device shown is for illustrative purposes only. The display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a laptop computer, an e-reader, or a television.

[0111] 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, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: include: substrate; A plurality of sub-pixels located on one side of the substrate, wherein the plurality of sub-pixels include dimming sub-pixels and non-dimming sub-pixels; a dimming structure located on a side of the sub-pixel facing away from the substrate, the dimming structure comprising a plurality of light extraction portions and a high refractive index layer; Wherein, in a direction perpendicular to the plane of the substrate, the light extraction portion is located on one side of the dimming sub-pixel, and the distance between the light extraction portion and the dimming sub-pixel closest thereto is L1, and the distance between the light extraction portion and the non-dimming sub-pixel closest thereto is L2, L1<L2; The high refractive index layer is located on a side of the light extraction portion facing away from the substrate and covers the sub-pixel and the light extraction portion, and the refractive index of the high refractive index layer is greater than the refractive index of the light extraction portion; At least two of the dimming sub-pixels are adjacently arranged in a first direction; the light extraction portion includes a first extraction portion, and in a direction perpendicular to the plane of the substrate, the first extraction portion is located between at least two adjacent dimming sub-pixels, and in the first direction, the first extraction portion does not overlap with the non-dimming sub-pixel; Alternatively, the display panel further includes a support column located on one side of the substrate, the support column including a first support column; in a direction perpendicular to the plane of the substrate, the first support column is located on one side of the dimming sub-pixel, and the first support column at least partially overlaps with the light extraction portion; Alternatively, the display panel further includes a support column located on one side of the substrate, the support column including a first support column; in a direction perpendicular to the plane of the substrate, the first support column is located on one side of the dimming sub-pixel, and the distance between the light extraction portion and the dimming sub-pixel closest to it is smaller than the distance between the first support column and the dimming sub-pixel closest to it.

2. The display panel according to claim 1, wherein: The display panel further includes: an encapsulation layer located between the sub-pixel and the dimming structure, the encapsulation layer comprising a first inorganic encapsulation layer, an organic encapsulation layer located on a side of the first inorganic encapsulation layer facing away from the substrate, and a second inorganic encapsulation layer located on a side of the organic encapsulation layer facing away from the substrate; The light extraction portion includes a bottom surface close to the substrate and a side wall intersecting the bottom surface, and an angle between the side wall and the bottom surface is θ0; The refractive index of the dimming sub-pixel is n1, the refractive index of the first inorganic encapsulation layer is n3, the refractive index of the organic encapsulation layer is n4, the refractive index of the second inorganic encapsulation layer is n5, the refractive index of the light extraction portion is n6, and the refractive index of the high refractive index layer is n7; The thickness of the first inorganic encapsulation layer is d1, the thickness of the organic encapsulation layer is d2, and the thickness of the second inorganic encapsulation layer is d3; And L min ≤L1≤L max , L2>L max ,in, L max and L min Combined and The maximum and minimum values ​​of L that can be obtained.

3. The display panel according to claim 1, wherein The display panel further includes: an encapsulation layer located between the sub-pixel and the dimming structure, the encapsulation layer comprising a first inorganic encapsulation layer, an organic encapsulation layer located on a side of the first inorganic encapsulation layer facing away from the substrate, and a second inorganic encapsulation layer located on a side of the organic encapsulation layer facing away from the substrate; The light extraction portion includes a bottom surface close to the substrate and a side wall intersecting the bottom surface, and an angle between the side wall and the bottom surface is λ0; The refractive index of the dimming sub-pixel is n1, the refractive index of the first inorganic encapsulation layer is n3, the refractive index of the organic encapsulation layer is n4, the refractive index of the second inorganic encapsulation layer is n5, the refractive index of the light extraction portion is n6, and the refractive index of the high refractive index layer is n7; The thickness of the first inorganic encapsulation layer is d1, the thickness of the organic encapsulation layer is d2, and the thickness of the second inorganic encapsulation layer is d3; And L min ≤L1≤L max , L2>L max ,in, L max and L min Combined and The maximum and minimum values ​​of L that can be obtained.

4. The display panel according to claim 1, wherein: The display panel further includes: an encapsulation layer located between the sub-pixel and the dimming structure, the encapsulation layer comprising a first inorganic encapsulation layer, an organic encapsulation layer located on a side of the first inorganic encapsulation layer facing away from the substrate, and a second inorganic encapsulation layer located on a side of the organic encapsulation layer facing away from the substrate; The light extraction portion includes a bottom surface close to the substrate and a side wall intersecting the bottom surface, and an angle between the side wall and the bottom surface is λ0; The refractive index of the dimming sub-pixel is n1, the refractive index of the first inorganic encapsulation layer is n3, the refractive index of the organic encapsulation layer is n4, the refractive index of the second inorganic encapsulation layer is n5, the refractive index of the light extraction portion is n6, and the refractive index of the high refractive index layer is n7; The thickness of the first inorganic encapsulation layer is d1, the thickness of the organic encapsulation layer is d2, and the thickness of the second inorganic encapsulation layer is d3; L min ≤L1≤L max ,L2>L max , in, L max and L min Combined and The maximum and minimum values ​​of L that can be obtained.

5. The display panel according to claim 1, wherein: The display panel further includes: an encapsulation layer located between the sub-pixel and the dimming structure, the encapsulation layer comprising a first inorganic encapsulation layer, an organic encapsulation layer located on a side of the first inorganic encapsulation layer facing away from the substrate, and a second inorganic encapsulation layer located on a side of the organic encapsulation layer facing away from the substrate; The light extraction portion includes a bottom surface close to the substrate and a side wall intersecting the bottom surface, and an angle between the side wall and the bottom surface is θ0; The refractive index of the dimming sub-pixel is n1, the refractive index of the first inorganic encapsulation layer is n3, the refractive index of the organic encapsulation layer is n4, the refractive index of the second inorganic encapsulation layer is n5, the refractive index of the light extraction portion is n6, and the refractive index of the high refractive index layer is n7; The thickness of the first inorganic encapsulation layer is d1, the thickness of the organic encapsulation layer is d2, and the thickness of the second inorganic encapsulation layer is d3; L min ≤L1≤L max ,L2>L max , in, L max and L min Combined and θ1∈(θair, δ2) to obtain the maximum and minimum values ​​of L.

6. The display panel according to claim 1, wherein: The light extraction portion further includes a second extraction portion; In a direction perpendicular to the plane of the substrate, the first extraction portion is located on one side of the dimming sub-pixel in the first direction, and a distance between the first extraction portion and the dimming sub-pixel closest thereto is smaller than a distance between the first extraction portion and the non-dimming sub-pixel closest thereto; In a direction perpendicular to the plane of the substrate, the second extraction portion is located on one side of the dimming sub-pixel in the second direction, the second direction intersects with the first direction, and the distance between the second extraction portion and the dimming sub-pixel closest to it is smaller than the distance between the second extraction portion and the non-dimming sub-pixel closest to it.

7. The display panel according to claim 1, wherein: In a direction perpendicular to the plane of the substrate, the dimming sub-pixel includes a first pixel side extending along a second direction, the second direction intersects the first direction, and the length of the first pixel side is b; The first extraction portion includes a first control edge extending along the second direction, and a length of the first control edge is a, where a≤b.

8. The display panel according to claim 7, wherein: a=b.

9. The display panel according to claim 1, wherein: In the second direction, the dimming sub-pixel overlaps with the non-dimming sub-pixel; The light extraction portion includes a second extraction portion, which is located on one side of the modulated sub-pixel in the second direction in a direction perpendicular to the plane of the substrate, and does not overlap with the non-modulated sub-pixel in the second direction.

10. The display panel according to claim 9, wherein: The non-dimming sub-pixels include a first color non-dimming sub-pixel and a second color non-dimming sub-pixel; The dimming sub-pixel includes a first dimming sub-pixel, and in the second direction, the first dimming sub-pixel overlaps with the first color non-dimming sub-pixel and the second color non-dimming sub-pixel respectively; The second extraction portion includes a second A extraction portion, and in a direction perpendicular to the plane of the substrate, the second A extraction portion is located on one side of the first dimming sub-pixel in the second direction, and in the second direction, the second A extraction portion is located in the interval between the first color non-dimming sub-pixel and the second color non-dimming sub-pixel.

11. The display panel according to claim 10, wherein: In a direction perpendicular to the plane of the substrate, the distance between the first color non-dimming sub-pixel and the second color non-dimming sub-pixel is m1; The second A extraction portion includes a second control edge extending along a first direction, the first direction intersects the second direction, and a length of the second control edge is c, where c=m1.

12. The display panel according to claim 9, wherein: The non-dimming sub-pixels include a first color non-dimming sub-pixel and a second color non-dimming sub-pixel; The dimming sub-pixel includes a second dimming sub-pixel, and in the second direction, the second dimming sub-pixel only overlaps with the first color non-dimming sub-pixel; The second extraction portion includes a second B extraction portion. In a direction perpendicular to the plane of the substrate, the second B extraction portion is located on one side of the second dimming sub-pixel in the second direction, and in the second direction, the second B extraction portion does not overlap with the first color non-dimming sub-pixel.

13. The display panel according to claim 12, wherein: In a direction perpendicular to the plane of the substrate, the second dimming sub-pixel includes a first pixel edge extending along a second direction, the second direction intersects the first direction, and a distance m2 is between an extension line of the first pixel edge and the first color non-dimming sub-pixel; In a direction perpendicular to the plane of the substrate, the second B extraction portion includes a third control edge extending along the first direction, and the length of the third control edge is d, where d=m2.

14. The display panel according to claim 1, wherein The dimming sub-pixels include a blue sub-pixel, and the non-dimming sub-pixels include a red sub-pixel and a green sub-pixel.

15. The display panel according to claim 14, wherein: The display panel includes a first pixel column and a second pixel column arranged along a second direction, the first pixel column including the green sub-pixels and the red sub-pixels alternately arranged along the first direction, the second pixel column including a plurality of blue pixel units arranged along the first direction, wherein the blue pixel unit includes two blue sub-pixels arranged along the first direction, a spacing between two blue sub-pixels in the blue pixel unit is smaller than a spacing between two adjacent blue pixel units, and the second direction intersects the first direction; The light extraction portion includes a first extraction portion and a second extraction portion, wherein the first extraction portion is located between two adjacent blue pixel units in a direction perpendicular to the plane of the substrate, and the first extraction portion does not overlap with the red sub-pixel and the green sub-pixel in the first direction; In a direction perpendicular to the plane of the substrate, the second extraction portion is located on one side of the blue sub-pixel in the second direction, and in the second direction, the second extraction portion does not overlap with the red sub-pixel and the green sub-pixel.

16. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 15.

Images