Display panel and display device

Abstract

The invention provides a display panel and a display device.The display panel is provided with a hole digging area, a first display area arranged around the hole digging area and a second display area arranged around the first display area. The display panel comprises a light refraction layer, wherein the light refraction layer is provided with a plurality of refraction assemblies arranged in an array; the distance between every two adjacent refraction assemblies in the first display area is smaller than the distance between every two adjacent refraction assemblies in the second display area. The brightness of the edge of the hole digging area of the display panel can be improved, and the brightness uniformity of the display panel is improved.

Description

Technical Field

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

[0002] In the related art, in order to improve the front light extraction efficiency of the display panel, an MLP (Micro Lens Panel) layer is added after the TFE (Thin Film Encapsulation) layer. However, for a display panel with a hole area, after adding the MLP layer, since the thickness of the thin film encapsulation layer at the edge of the hole area is lower than that of the normal display area, the edge of the hole area has a problem of low brightness, which leads to poor brightness uniformity of the display panel.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] In view of this, the present invention provides a display panel and a display device to at least solve the problem of low brightness at the edge of the hole-punching area of ​​the display panel in the prior art.

[0005] On the one hand, an embodiment of the present invention provides a display panel, comprising a hole-punch area, a first display area arranged around the hole-punch area, and a second display area arranged around the first display area; the display panel comprises: a light refraction layer, the light refraction layer having a plurality of refraction components arranged in an array; wherein the distance between two adjacent refraction components in the first display area is smaller than the distance between two adjacent refraction components in the second display area.

[0006] On the other hand, an embodiment of the present invention further provides a display device, comprising the above-mentioned display panel.

[0007] The display panel and the display device of the present invention are configured such that the distance between two adjacent refractive components in the first display area is smaller than the distance between two adjacent refractive components in the second display area, so that in the first display area, light refracted by the refractive components is emitted approximately along the vertical direction of the display panel, thereby improving the problem of low brightness in the first display area of ​​the display panel in the prior art, increasing the brightness of the first display area, and further improving the brightness uniformity of the first display area and the second display area of ​​the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification are used to explain the principles of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0009] Figure 1 It is a structural schematic diagram of a display panel in the related art;

[0010] Figure 2 yes Figure 1 The structural schematic diagram of the AA' section of the display panel;

[0011] Figure 3 yes Figure 1 A schematic diagram of light refraction in the second display area of ​​the middle display panel;

[0012] Figure 4 yes Figure 1 A schematic diagram of light refraction in the first display area of ​​the middle display panel;

[0013] Figure 5 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0014] Figure 6 yes Figure 5 A schematic diagram of a cross-sectional structure of a first display area of ​​a middle display panel;

[0015] Figure 7 yes Figure 5 A schematic cross-sectional structure diagram of a second display area of ​​a middle display panel;

[0016] Figure 8 yes Figure 5 The structural schematic diagram of the BB' section of the display panel;

[0017] Fig. 9 yes Figure 1 A schematic cross-sectional structure diagram of a first display area of ​​a display panel;

[0018] Fig.10 yes Figure 1 A schematic cross-sectional structure diagram of a second display area of ​​a display panel;

[0019] Fig.11 is a schematic cross-sectional structure diagram of a first display area of ​​another display panel provided by an embodiment of the present invention;

[0020] Fig.12 It is a structural schematic diagram of a display device provided by an embodiment of the present invention.

[0021] Reference numerals:

[0022] 10. Display panel;

[0023] 11. Digging area;

[0024] 12. The first display area;

[0025] 13. Second display area;

[0026] 14. Light refraction layer;

[0027] 141. Refraction component;

[0028] 142. First slope;

[0029] 143. Second slope;

[0030] 15. Encapsulation layer;

[0031] 16. Light-emitting element;

[0032] 17. Pixel definition layer;

[0033] 18. Protective layer;

[0034] 19. Thin film transistor layer;

[0035] 20. Display device. DETAILED DESCRIPTION

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0037] The words "first", "second" and the like used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. In addition, in the description of the present invention, the orientation or position relationship indicated by the terms "upper" and "lower" are based on the orientation or position relationship shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and features in different embodiments may be combined with each other.

[0039] In related technologies, such as Figure 1As shown, the display panel 10' is at least divided into a hole-punch area 11, a first display area 12 and a second display area 13. The first display area 12 is disposed inside the second display area 13, and the hole-punch area 11 is disposed inside the first display area 12, and the three are disposed adjacently.

[0040] like Figure 2 As shown, the display panel 10' comprises an encapsulation layer 15. In a direction from the second display area 13 through the first display area 12 to the hole-digging area 11, the thickness of the encapsulation layer 15 gradually decreases.

[0041] like Figure 3 As shown, the display panel 10' further includes a light emitting element 16 and a light refraction layer 14. The light refraction layer 14 has a plurality of refraction components 141 arranged in an array. The light refraction layer 14 may be an MLP (Micro Lens Panel) layer, i.e., an integrated micro lens technology is adopted. The light refraction layer 14 may add a refraction component 141 of a lens structure to each light emitting element 16, and at the same time, by introducing a high refractive index and high transmittance material, change the transmission path of the light emitted from the light emitting element 16, so that the originally divergent light energy can be focused in the vertical direction of the display panel 10', thereby improving the front light output efficiency of the display panel 10'.

[0042] However, if Figure 2 , Figure 3 and Figure 4 As shown, due to the need for leveling during preparation, the thickness of the encapsulation layer 15 in the first display area 12 is lower than that in the second display area 13. For the display panel 10' having the hole-punching area 11, after adding the MLP layer, the convergence effect of the refraction component 141 located in the first display area 12 on the light emitted from the light-emitting element 16 becomes worse, that is, the light emitted from the light-emitting element 16 is no longer roughly emitted in the vertical direction of the display panel 10' after being refracted by the refraction component 141. Therefore, the edge of the hole-punching area 11 has a problem of low brightness, which leads to poor brightness uniformity in the first display area 12 and the second display area 13 of the display panel 10'.

[0043] The inventor of this case has provided a solution to the problems existing in the prior art through careful and in-depth research. The present invention provides a display panel and a display device, wherein the display panel has a hole-punching area, a first display area arranged around the hole-punching area, and a second display area arranged around the first display area; the display panel includes: a light refraction layer, the light refraction layer has a plurality of refraction components arranged in an array; wherein the distance between two adjacent refraction components in the first display area is smaller than the distance between two adjacent refraction components in the second display area. The present invention sets the distance between two adjacent refraction components in the first display area to be smaller than the distance between two adjacent refraction components in the second display area, so that in the first display area, the light refracted by the refraction component is emitted roughly along the vertical direction of the display panel, thereby improving the problem of low brightness of the first display area of ​​the display panel in the prior art, increasing the brightness of the first display area, and further improving the brightness uniformity of the first display area and the second display area of ​​the display panel.

[0044] On the one hand, if Figure 5 As shown, an embodiment of the present invention provides a display panel 10, whose light emitting surface is at least divided into a hole-punching area 11, a first display area 12, and a second display area 13. The first display area 12 is arranged around the hole-punching area 11, and the second display area 13 is arranged around the first display area 12. The three can be arranged adjacently.

[0045] like Figure 6 and Figure 7 As shown, the display panel 10 includes a light refraction layer 14. The light refraction layer 14 has a plurality of refraction components 141 arranged in an array. The light refraction layer 14 may be an MLP layer, i.e., an integrated microlens technology is used. The light refraction layer 14 may change the transmission path of the light emitted from the light emitting pixel by adding a refraction component 141 of a lens structure above each light emitting pixel and introducing a high refractive index and high transmittance material, so that the originally divergent light energy can be focused in a substantially vertical direction of the display panel 10, thereby improving the front light output efficiency of the display panel 10. Specifically, the material of the refraction component 141 may be zirconium dioxide (ZrO2), and the refractive index of the refraction component 141 is between 1.9 and 2.2, so as to refract the light incident into the refraction component 141 so as to emit it in a direction substantially perpendicular to the plane where the display panel 10 is located.

[0046] Furthermore, the distance between two adjacent refractive components 141 in the first display area 12 is smaller than the distance between two adjacent refractive components 141 in the second display area 13. The distance between the two adjacent refractive components 141 is the distance between the closest points of the lower ends of the slopes of the two components. By setting the distance between the two adjacent refractive components 141 in the first display area 12 to be smaller than the distance between the two adjacent refractive components 141 in the second display area 13, the light refracted by the refractive components 141 in the first display area 12 is emitted approximately along the vertical direction of the display panel 10, thereby improving the problem of low brightness of the first display area 12 of the display panel 10 in the prior art, improving the brightness of the first display area 12, and further improving the brightness uniformity of the first display area 12 and the second display area 13 of the display panel 10.

[0047] like Figure 8 As shown, in some embodiments, the display panel 10 further includes: an encapsulation layer 15. The encapsulation layer 15 is located on one side of the light refraction layer 14. Specifically, the encapsulation layer 15 is located on the side of the light refraction layer 14 away from the light emitting direction of the display panel 10. The encapsulation layer 15 can be prepared by IJP (ink-jet printing, inkjet printing, IJP) technology, which is flexible and easy to bend. In addition to the encapsulation function, the encapsulation layer 15 can also play a flattening role, which facilitates the subsequent preparation of a touch layer on the encapsulation layer 15. The thickness of the encapsulation layer 15 can be 8 to 10 μm. In the direction perpendicular to the plane where the display panel 10 is located, both sides of the encapsulation layer 15 have a silicon nitride or silicon oxide layer for waterproofing and moisture-proofing.

[0048] Continue to refer Figure 8, further, in the first display area 12, the thickness of the encapsulation layer 15 gradually decreases along the direction close to the hole-digging area 11. Specifically, due to the need for leveling during the preparation of the IJP technology, the thickness of the encapsulation layer 15 in the first display area 12 is lower than that in the second display area 13. That is, the thickness of the encapsulation layer 15 at the edge is less than the thickness of the encapsulation layer 15 in the middle. As a result, in the first display area 12, the distance between the refractive component 141 and the luminous pixel is smaller than that in the second display area 13. If the design of the prior art in which the distances between two adjacent refractive components 141 are the same is still adopted, the convergence effect of the refractive component 141 on the light emitted from the luminous pixel in the first display area 12 will be worse, that is, the light emitted from the luminous pixel will no longer be roughly emitted in the vertical direction of the display panel 10 after being refracted by the refractive component 141. Therefore, the problem of low brightness occurs at the edge of the hole-digging area 11, which leads to poor brightness uniformity in the first display area 12 and the second display area 13 of the display panel 10. In the first display area 12, the thickness of the encapsulation layer 15 gradually decreases along the direction close to the hole area 11. With the design that the distance between two adjacent refractive components 141 in the first display area 12 is smaller than the distance between two adjacent refractive components 141 in the second display area 13, the light refracted by the refractive components 141 in the first display area 12 can be emitted approximately along the vertical direction of the display panel 10, thereby improving the problem of low brightness of the first display area 12 of the display panel 10 in the prior art, improving the brightness of the first display area 12, and further improving the brightness uniformity of the first display area 12 and the second display area 13 of the display panel 10.

[0049] In some embodiments, in the first display area 12, the thickness of the encapsulation layer 15 is positively correlated with the distance between two adjacent refractive components 141. Since the thickness of the encapsulation layer 15 gradually decreases in the first display area 12, along the direction close to the hole-digging area 11, the distance between two adjacent refractive components 141 also gradually decreases in the first display area 12, along the direction close to the hole-digging area 11. It should be noted that, due to different thicknesses of the encapsulation layer 15, the distance between the light-emitting pixel and the refractive component 141 is also different, and thus the refractive effect of the refractive component 141 on the outgoing light is also different. Specifically, the smaller the distance between the light-emitting pixel and the refractive component 141, the smaller the angle between the outgoing light emitted to the refractive component 141 and the plane where the display panel 10 is located. In order to make the outgoing light emitted roughly in the direction perpendicular to the plane where the display panel 10 is located, the larger the angle of refraction of the refractive component 141 is required, so it is necessary to set different distances between two adjacent refractive components 141 according to different thicknesses of the encapsulation layer 15. In view of the above problem, the above limitation can make the distance between two adjacent refractive components 141 change according to the change of the thickness of the encapsulation layer 15, so that the smaller the thickness of the encapsulation layer 15 is, the smaller the distance between the two adjacent refractive components 141 is, thereby making it possible for the light refracted by the refractive component 141 in the first display area 12 to be emitted in the vertical direction of the display panel 10 as much as possible, so as to improve the brightness of the first display area 12, and thereby improve the overall light output efficiency of the front side of the display panel 10.

[0050] In addition, due to the problem of the manufacturing process, in the first display area 12, the thickness of the encapsulation layer 15 may first increase and then decrease along the direction close to the hole-digging area 11. In this case, it can be set that the distance between two adjacent refractive components 141 also first increases and then decreases along the direction close to the hole-digging area 11, that is, the thickness of the encapsulation layer 15 is always kept in the first display area 12. The distance between the two adjacent refractive components 141 is positively correlated. In this way, in the first display area 12, the light refracted by the refractive component 141 is emitted approximately in the vertical direction of the display panel 10, so as to improve the brightness of the first display area 12.

[0051] Furthermore, in the second display area 13, due to the preparation process or other reasons, the thickness of the encapsulation layer 15 may also be non-uniform. At this time, the refraction effect of the refraction component 141 on the outgoing light will also be poor, resulting in the problem of poor brightness uniformity in the second display area 13. In view of the above problem, it can be set that: in the second display area 13, the thickness of the encapsulation layer 15 is positively correlated with the distance between two adjacent refraction components 141. The above setting can make the light refracted by the refraction component 141 in the second display area 13 as much as possible emitted in the vertical direction of the display panel 10, so as to improve the brightness of the lower thickness position of the encapsulation layer 15 in the second display area 13, thereby improving the brightness uniformity of the second display area 13.

[0052] like Figure 8 , Fig. 9 and Fig.10 As shown, in some embodiments, in the second display area 13, the thickness of the encapsulation layer 15 is H1, and the distance between two adjacent refractive components 141 is W1. In the first display area 12, the thickness of the encapsulation layer 15 is H2, and the distance between two adjacent refractive components 141 is W2. Among them, H1, H2, W1 and W2 satisfy the following relationship: H2 / H1=W2 / W1. It can be understood that, in the first display area 12 and the second display area 13, the above relationship between the thickness of the encapsulation layer 15 and the distance between two adjacent refractive components 141 is a specific definition that the distance between two adjacent refractive components 141 in the first display area 12 is less than the distance between two adjacent refractive components 141 in the second display area 13. The above arrangement can simplify the design and preparation cost of the spacing of the refractive components 141 of the light refractive layer 14 while improving the brightness of the first display area 12 and the overall light extraction efficiency of the front side of the display panel 10.

[0053] In some alternative embodiments, H1, H2, W1 and W2 may also satisfy the following relationship: H2 / H1=K1*W2 / W1, where K1 is a positive number. It is understandable that, compared with the aforementioned embodiment, the numerical relationship between H1, H2, W1 and W2 in this embodiment is only one more coefficient K1. Specifically, the coefficient K1 may be adjusted according to factors such as the material, thickness, light output of the display panel 10 and the parameters of the refractive component 141, so as to increase the brightness of the first display area 12 as much as possible, thereby improving the brightness uniformity of the first display area 12 and the second display area 13 of the display panel 10.

[0054] In some embodiments, in the first display area 12, the thickness of the encapsulation layer 15 is negatively correlated with the thickness of the refractive component 141. It should be noted that in order to make the outgoing light be able to be emitted roughly in the direction perpendicular to the plane where the display panel 10 is located under different thicknesses of the encapsulation layer 15, in addition to adjusting the distance between two adjacent refractive components 141, it can also be achieved by adjusting the thickness of the refractive component 141. Specifically, the smaller the thickness of the encapsulation layer 15, the smaller the distance between the light-emitting pixel and the refractive component 141, and the larger the angle of refraction required by the refractive component 141. Because the greater the thickness of the refractive component 141, the greater the refraction angle that the refractive component 141 can provide. Therefore, the thickness of the encapsulation layer 15 is negatively correlated with the thickness of the refractive component 141, which can make the light refracted by the refractive component 141 in the first display area 12 emitted as much as possible in the vertical direction of the display panel 10, so as to improve the brightness of the first display area 12, thereby improving the overall light extraction efficiency of the front of the display panel 10. In addition, in the first display area 12 , when the thickness of the encapsulation layer 15 decreases along the direction close to the hole area 11 , the thickness of the refractive component 141 increases, and the overall thickness variation of the display panel 10 in the first display area 12 and the second display area 13 can be reduced, thereby improving the flatness of the display panel 10 .

[0055] Continue to refer Fig. 9 and Fig.10 In some embodiments, in the second display area 13, the thickness of the encapsulation layer 15 is H1, and the thickness of the refractive component 141 is D1. In the first display area 12, the thickness of the encapsulation layer 15 is H2, and the thickness of the refractive component 141 is D2. Among them, H1, H2, D1 and D2 can satisfy the following relationship: 0≤D2-D1≤H1-H2. That is, in the first display area 12, along the direction close to the hole-digging area 11, the thickness of the encapsulation layer 15 decreases, and the increase in the thickness of the refractive component 141 is less than or equal to the decrease in the thickness of the encapsulation layer 15. It can be understood that the above relationship between the thickness of the encapsulation layer 15 and the thickness of the refractive component 141 in the first display area 12 and the second display area 13 is a specific definition that the thickness of the encapsulation layer 15 is negatively correlated with the thickness of the refractive component 141 in the first display area 12. The above configuration can improve the brightness of the first display area 12 and the overall light extraction efficiency of the front side of the display panel 10 , while simplifying the design of the thickness of the refractive component 141 of the light refractive layer 14 and the manufacturing cost.

[0056] In some alternative embodiments, H1, H2, D1 and D2 may also satisfy the following relationship: 0≤K2(D2-D1)≤H1-H2, where K2 is a positive number. It is understandable that, compared with the aforementioned embodiment, the numerical relationship between H1, H2, D1 and D2 in this embodiment is only one more coefficient K2. Specifically, the coefficient K2 may be adjusted according to factors such as the material, thickness, light output of the display panel 10 and the parameters of the refractive component 141, so as to increase the brightness of the first display area 12 as much as possible, thereby improving the brightness uniformity of the first display area 12 and the second display area 13 of the display panel 10.

[0057] Continue to refer Fig. 9 and Fig.10 In some embodiments, two adjacent refractive components 141 respectively have a first slope 142 and a second slope 143 opposite to each other; along the direction away from the encapsulation layer 15, the first slope 142 and the second slope 143 are inclined in a direction away from each other. In the first display area 12, the thickness of the encapsulation layer 15 is negatively correlated with the length of the first slope 142 and the second slope 143. It should be noted that in order to make the outgoing light be able to be emitted in a direction substantially perpendicular to the plane where the display panel 10 is located under different thicknesses of the encapsulation layer 15, in addition to adjusting the distance between the two adjacent refractive components 141 and adjusting the thickness of the refractive component 141, it can also be achieved by adjusting the slope length of the refractive component 141. Specifically, the smaller the thickness of the encapsulation layer 15, the smaller the distance between the light-emitting pixel and the refractive component 141, and the larger the angle of refraction required by the refractive component 141. In addition, because the larger the slope length of the refractive component 141, the larger the refraction angle that the refractive component 141 can provide. Therefore, the thickness of the encapsulation layer 15 is negatively correlated with the slope length of the refractive component 141, so that in the first display area 12, the light refracted by the refractive component 141 is emitted as much as possible in the vertical direction of the display panel 10, so as to improve the brightness of the first display area 12, thereby improving the overall light output efficiency of the front side of the display panel 10.

[0058] In some embodiments, in the second display area 13, the thickness of the encapsulation layer 15 is H1, and the lengths of the first slope 142 and the second slope 143 are both L1. In the first display area 12, the thickness of the encapsulation layer 15 is H2, and the lengths of the first slope 142 and the second slope 143 are both L2. Among them, H1, H2, L1 and L2 can satisfy the following relationship: (H1-H2) / H1=(L2-L1) / L2. That is, in the first display area 12, along the direction close to the hole-digging area 11, the thickness of the encapsulation layer 15 decreases, and the change ratio of the thickness of the encapsulation layer 15 is equal to the change ratio of the length of the first slope 142 and the second slope 143. Further, the reduction ratio of the thickness of the encapsulation layer 15 is equal to the increase ratio of the length of the first slope 142 and the second slope 143. It can be understood that the above relationship between the thickness of the encapsulation layer 15 and the length of the slope of the refractive component 141 in the first display area 12 and the second display area 13 is a specific definition that the thickness of the encapsulation layer 15 is negatively correlated with the lengths of the first slope 142 and the second slope 143 in the first display area 12. The above arrangement can simplify the design and preparation cost of the surface length of the refractive component 141 of the light refractive layer 14 while improving the brightness of the first display area 12 and the overall light extraction efficiency of the front of the display panel 10.

[0059] In some alternative embodiments, H1, H2, L1 and L2 may also satisfy the following relationship: K3*(H1-H2) / H1=(L2-L1) / L2, where K3 is a positive number. It is understandable that, compared with the aforementioned embodiment, the numerical relationship between H1, H2, L1 and L2 in this embodiment has only one more coefficient K3. Specifically, the coefficient K3 may be adjusted according to factors such as the material, thickness, light output of the display panel 10 and the parameters of the refractive component 141, so as to increase the brightness of the first display area 12 as much as possible, thereby improving the brightness uniformity of the first display area 12 and the second display area 13 of the display panel 10.

[0060] Continue to refer Fig. 9 and Fig.10 In some embodiments, the distance between two adjacent refractive components 141 in the second display area 13 is W1, where 5μm≤W1≤30μm. The distance between two adjacent refractive components 141 in the first display area 12 is W2, where 4μm≤W2≤29μm. In the first display area 12 and the second display area 13, the distance between two adjacent refractive components 141 satisfies the above relationship, respectively, so that the refractive component 141 can complete the refraction of the light incident on the refractive component 141, and make it emit in a direction substantially perpendicular to the plane where the display panel 10 is located after refraction, so as to improve the brightness of the first display area 12 and the overall light extraction efficiency of the front of the display panel 10.

[0061] Further, W1 and W2 may also satisfy the following relationship: W1-W2=1μm. It can be understood that the above relationship between W1 and W2 is another specific definition that the distance between two adjacent refractive components 141 in the first display area 12 is less than the distance between two adjacent refractive components 141 in the second display area 13. Since the thickness of the encapsulation layer 15 can be a certain value in the second display area 13, in order to ensure the same refractive effect, the distance between the two adjacent refractive components 141 can also be a certain value, and then in the first display area 12, the distance between the two adjacent refractive components 141 can also be a certain value. The above arrangement can simplify the design and preparation cost of the thickness of the refractive component 141 of the light refractive layer 14 while improving the brightness of the first display area 12 and the overall light extraction efficiency of the front of the display panel 10.

[0062] Specifically, in the second display area 13, the specific value of the distance W1 between two adjacent refractive components 141 can be any one of 5μm, 10μm, 15μm, 20μm, 25μm or 30μm, and the present application does not limit this. Correspondingly, in the first display area 12, the specific value of the distance W2 between two adjacent refractive components 141 can be any one of 4μm, 9μm, 14μm, 19μm, 24μm or 29μm, and the present application does not limit this.

[0063] In some embodiments, the display panel 10 further includes: a light emitting element 16 and a pixel definition layer 17. The light emitting element 16 is located on the side of the encapsulation layer 15 away from the light refraction layer 14. The light emitted by the light emitting element 16 is refracted by the refraction component 141 of the light refraction layer 14, and then emitted from the light emitting surface of the display panel 10. The pixel definition layer 17 has a plurality of pixel definition holes arranged in an array, and the light emitting element 16 is located in the pixel definition hole. Specifically, the light refraction layer 14 adds a refraction component 141 of a lens structure to each light emitting element 16, and at the same time introduces a high refractive index and high transmittance material to change the transmission path of the light emitted from the light emitting element 16, so that the originally divergent light energy can be focused in the vertical direction of the display panel 10, thereby improving the front light output efficiency of the display panel 10.

[0064] like Fig.11As shown, specifically, in the first display area 12, the distance between two adjacent refractive components 141 is W2, and the width of the anode of the light-emitting element 16 not covered by the pixel definition hole is W3, wherein W2 ≥ W3. It can be understood that, since the thickness of the encapsulation layer 15 of the first display area 12 is less than the thickness of the encapsulation layer 15 of the second display area 13, correspondingly, the distance W2 between the two adjacent refractive components 141 of the first display area 12 is less than the distance W1 between the two adjacent refractive components 141 of the second display area 13. Also, because, in the first display area 12 and the second display area 13, the width of the anode of the light-emitting element 16 not covered by the pixel definition hole is the same. Therefore, the distance W1 between the two adjacent refractive components 141 of the second display area 13 is greater than the width W3 of the anode of the light-emitting element 16 not covered by the pixel definition hole. It should be noted that W1, W2 and W3 satisfy the above relationship, so that the light emitted from the light emitting element 16 can be refracted by the refraction component 141 as much as possible, so that it can be emitted in a direction roughly perpendicular to the plane where the display panel 10 is located, thereby improving the brightness of the first display area 12 and the second display area 13, as well as the overall light output efficiency of the front of the display panel 10.

[0065] Continue to refer Fig. 9 and Fig.10 In some embodiments, the display panel 10 further includes a protective layer 18 (Organic Coat, OC). The protective layer 18 is located on the side of the light refraction layer 14 facing the light emitting direction of the display panel 10. The material of the protective layer 18 can be a transparent resin, which protects the light refraction layer 14 and plays a role in flattening.

[0066] Continue to refer Fig. 9 and Fig.10 In some embodiments, the display panel 10 further includes a thin film transistor layer 19. The thin film transistor layer 19 is located on the side of the pixel definition layer 17 away from the light refraction layer 14. The thin film transistor layer 19 includes a pixel driving circuit to drive the light emitting element 16 to emit light.

[0067] In some embodiments, the display panel 10 further includes a touch layer. The touch layer is located between the encapsulation layer 15 and the light refraction layer 14, and is located on the silicon nitride layer or silicon oxide layer on the encapsulation layer 15. The touch layer is used to provide a touch structure for the display panel 10, so that the display panel 10 can provide touch operation.

[0068] The display panel 10 of the present invention is configured such that the distance between two adjacent refractive components 141 in the first display area 12 is smaller than the distance between two adjacent refractive components 141 in the second display area 13, so that in the first display area 12, light refracted by the refractive components 141 is emitted approximately along the vertical direction of the display panel 10, thereby improving the problem of low brightness of the first display area 12 of the display panel 10 in the prior art, increasing the brightness of the first display area 12, and further improving the brightness uniformity of the first display area 12 and the second display area 13 of the display panel 10.

[0069] On the other hand, Fig.12 As shown, an embodiment of the present invention further provides a display device 20, including the display panel 10 provided in the embodiment of the present invention. The display device 20 can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. The specific implementation and technical effects of the display device 20 can be referred to the specific embodiments of the display panel 10 and the preparation method thereof, and the repeated parts will not be repeated.

[0070] In summary, the display panel and the display device of the present invention, by setting the distance between two adjacent refractive components in the first display area to be smaller than the distance between two adjacent refractive components in the second display area, enable the light refracted by the refractive components in the first display area to be emitted approximately along the vertical direction of the display panel, thereby improving the problem of low brightness in the first display area of ​​the display panel in the prior art, increasing the brightness of the first display area, and further improving the brightness uniformity of the first display area and the second display area of ​​the display panel.

[0071] The above contents are further detailed descriptions of the present invention in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. A display panel comprising a hole-punch area, a first display area arranged around the hole-punch area, and a second display area arranged around the first display area, wherein: include: A light refraction layer, wherein the light refraction layer has a plurality of refraction components arranged in an array; Wherein, a distance between two adjacent refractive components in the first display area is smaller than a distance between two adjacent refractive components in the second display area.

2. The display panel according to claim 1, characterized in that: Also includes: An encapsulation layer, located on one side of the light refraction layer; In the first display area, the thickness of the encapsulation layer gradually decreases along a direction approaching the hole-digging area.

3. The display panel according to claim 2, characterized in that: In the first display area, the thickness of the encapsulation layer is positively correlated with the distance between two adjacent refractive components.

4. The display panel according to claim 3, characterized in that: In the second display area, the thickness of the encapsulation layer is H1, and the distance between two adjacent refractive components is W1; In the first display area, the thickness of the encapsulation layer is H2, and the distance between two adjacent refractive components is W2; Among them, H2 / H1=W2 / W1.

5. The display panel according to claim 2, characterized in that: In the first display area, the thickness of the encapsulation layer is negatively correlated with the thickness of the refractive component.

6. The display panel according to claim 5, characterized in that: In the second display area, the thickness of the encapsulation layer is H1, and the thickness of the refractive component is D1; In the first display area, the thickness of the encapsulation layer is H2, and the thickness of the refractive component is D2; Among them, 0≤D2-D1≤H1-H2.

7. The display panel according to claim 2, characterized in that: Two adjacent refractive components respectively have a first slope surface and a second slope surface opposite to each other; along the direction away from the encapsulation layer, the first slope surface and the second slope surface are both inclined in a direction away from each other; Wherein, in the first display area, the thickness of the encapsulation layer is negatively correlated with the lengths of the first slope surface and the second slope surface respectively.

8. The display panel according to claim 7, characterized in that: In the second display area, the thickness of the encapsulation layer is H1, and the lengths of the first slope surface and the second slope surface are both L1; In the first display area, the thickness of the encapsulation layer is H2, and the lengths of the first slope surface and the second slope surface are both L2; Among them, (H1-H2) / H1=(L2-L1) / L2.

9. The display panel according to claim 1, characterized in that: The distance between two adjacent refractive components in the second display area is W1, wherein 5 μm≤W1≤30 μm; The distance between two adjacent refractive components in the first display area is W2, wherein 4 μm≤W2≤29 μm; Among them, W1-W2=1μm.

10. The display panel according to claim 2, characterized in that: Also includes: A light emitting element, the light emitting element being located on a side of the encapsulation layer away from the light refraction layer; A pixel definition layer having a plurality of pixel definition holes arranged in an array, wherein the light emitting elements are located in the pixel definition holes; Wherein, in the first display area, the distance between two adjacent refractive components is W2, and the width of the anode of the light-emitting element not covered by the pixel definition hole is W3, wherein W2≥W3.

11. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 10.

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