Display panel and display device

Abstract

This application relates to a display panel and a display device, belonging to the field of display technology. The display panel includes a substrate and a display structure layer, a light conversion structure layer, and a color filter structure layer located on the substrate. The display structure layer is located on the substrate and includes multiple light-emitting layers. The light conversion structure layer is located on the side of the display structure layer away from the substrate and includes a dam pattern and multiple light conversion layers. The color filter structure layer is located on the side of the display structure layer away from the substrate and includes a first light-transmitting protective layer, a light-shielding pattern, and a color filter layer. The first light-transmitting protective layer is located between the light conversion structure layer and the light-shielding pattern, and the orthographic projection of the dam pattern and the light conversion layer onto the substrate is within the orthographic projection of the first light-transmitting protective layer onto the substrate. That is, the first light-transmitting protective layer can cover the light conversion layer to protect it, reduce the possibility of damage to the light conversion layer, and improve the yield of the display panel.

Description

Technical Field

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

[0002] A display panel is a device with display function.

[0003] A current type of display panel includes a substrate and a display structure layer, a light conversion structure layer, and a color filter layer located on the substrate. The display structure layer includes light-emitting elements, the color filter layer includes a masking pattern and a color filter, the light conversion layer can emit light when excited by the light emitted by the light-emitting elements, and the color filter layer can filter the light emitted by the light conversion layer.

[0004] However, in the aforementioned display panels, the light conversion layer is easily damaged, resulting in a low yield rate for the display panels.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this application is to overcome the shortcomings of the prior art and to provide a display panel and a display device.

[0007] According to one aspect of this application, a display panel is provided, comprising: Substrate; The display structure layer is located on the substrate and includes multiple light-emitting layers; A light conversion structure layer is located on the side of the display structure layer away from the substrate, and includes a dam pattern and multiple light conversion layers. The dam pattern includes multiple first openings. The orthographic projections of the multiple light conversion layers on the substrate overlap with the orthographic projections of the multiple first openings on the substrate, and the orthographic projections of the first openings on the substrate overlap with the orthographic projections of the light-emitting layer on the substrate. A color filter structure layer is located on the side of the display structure layer away from the substrate, and includes a first light-transmitting protective layer, a light-shielding pattern, and a color filter layer. The first light-transmitting protective layer is located on the side of the light conversion structure layer away from the substrate. The dam pattern and the orthographic projection of the light conversion layer on the substrate are located within the orthographic projection of the first light-transmitting protective layer on the substrate. The light-shielding pattern is located on the side of the first light-transmitting protective layer away from the substrate. The color filter layer is located on the side of the light-shielding pattern away from the substrate. The light-shielding pattern includes a plurality of second openings, and the orthographic projections of the second openings on the substrate overlap with the orthographic projections of the first openings on the substrate.

[0008] Optionally, the orthographic projection of the second opening on the substrate lies within the orthographic projection of the first opening on the substrate.

[0009] Optionally, the size of the first opening in the first direction is less than or equal to 1.5 times the size of the second opening, and the first direction is a direction parallel to the substrate.

[0010] Optionally, the color filter layer includes a plurality of color resist layers, and the orthographic projection of the second opening on the substrate is located within the orthographic projection of the color resist layer on the substrate.

[0011] Optionally, the size of the second opening in the first direction is greater than or equal to 1 / 2 of the size of the color resist layer in the first direction.

[0012] Optionally, the orthographic projection of the light-emitting layer on the substrate is located within the orthographic projection of the first opening on the substrate, and the dimension of the light-emitting layer in the first direction is greater than or equal to 1 / 2 of the dimension of the first opening in the first direction, wherein the first direction is a direction parallel to the substrate.

[0013] Optionally, the color filter layer includes a plurality of color resist layers, and the orthographic projection of the first opening on the substrate is located within the orthographic projection of the color resist layer on the substrate.

[0014] Optionally, the color filter structure layer further includes a light-transmitting cover layer, which is located between the light-shielding pattern and the color filter layer, and the orthographic projection of the second opening on the substrate is located within the orthographic projection of the light-transmitting cover layer on the substrate.

[0015] Optionally, the refractive index of the light-transmitting covering layer is less than the refractive index of the first light-transmitting protective layer.

[0016] Optionally, the light-transmitting covering layer includes a light-transmitting substrate and a plurality of light-transmitting hollow particles located in the light-transmitting substrate.

[0017] Optionally, the color filter structure layer further includes a first light transmission adjustment layer, which is located between the light transmission cover layer and the light-shielding pattern, and the orthographic projection of the second opening on the substrate is located within the orthographic projection of the first light transmission adjustment layer on the substrate, wherein the refractive index of the first light transmission adjustment layer is less than the refractive index of the first light transmission protective layer.

[0018] Optionally, the color filter structure layer further includes a third light transmission adjustment pattern, which is located between the first light transmission protective layer and the light transmission cover layer; The third light-transmitting adjustment pattern includes multiple light-transmitting adjustment sheets. The orthographic projections of the multiple light-transmitting adjustment sheets on the substrate overlap with the orthographic projections of the multiple second openings on the substrate. The refractive index of the light-transmitting adjustment sheets is less than the refractive index of the first light-transmitting protective layer.

[0019] Optionally, the color filter structure layer further includes a second light transmission adjustment layer, which is located on the side of the first light transmission protection layer near the substrate. The orthographic projection of the second opening on the substrate is located within the orthographic projection of the second light transmission adjustment layer on the substrate, and the refractive index of the second light transmission adjustment layer is less than the refractive index of the light conversion layer.

[0020] Optionally, the thickness of the light conversion layer in the second direction is greater than or equal to the thickness of the dam pattern in the second direction, and less than or equal to 1.3 times the thickness of the dam pattern in the second direction, wherein the second direction is perpendicular to the substrate.

[0021] Optionally, the target thickness is greater than or equal to the thickness of the light conversion layer in the second direction, and less than or equal to 1.2 times the thickness of the light conversion layer in the second direction, wherein the target thickness is the sum of the thicknesses of the dam pattern, the first light-transmitting protective layer, and the light-shielding pattern in the second direction.

[0022] According to another aspect of this application, a display device is provided, the display device including a housing and any of the display panels described above.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application.

[0026] Figure 2 for Figure 1 The diagram shows a cross-sectional structure of a display panel.

[0027] Figure 3 for Figure 1 This is a schematic diagram of another cross-sectional structure of the display panel shown.

[0028] Figure 4 for Figure 1 This is a schematic diagram of another cross-sectional structure of the display panel shown.

[0029] Figure 5 for Figure 1 This is a schematic diagram of another cross-sectional structure of the display panel shown.

[0030] Figure 6 for Figure 1 This is a schematic diagram of another cross-sectional structure of the display panel shown.

[0031] Figure 7 for Figure 1 This is a schematic diagram of another cross-sectional structure of the display panel shown.

[0032] Figure 8 for Figure 1 This is a schematic diagram of another cross-sectional structure of the display panel shown.

[0033] Figure 9 for Figure 1 This is a schematic diagram of another cross-sectional structure of the display panel shown.

[0034] Figure 10 for Figure 1 This is a schematic diagram of another cross-sectional structure of the display panel shown. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0036] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application. Figure 2 yes Figure 1 The diagram shows a cross-sectional structure of a display panel. Figure 2 yes Figure 1 (The diagram shows a cross-sectional view of the display panel at point AA). Please refer to it. Figure 1 and Figure 2 The display panel 10 includes: Substrate 11.

[0037] The display structure layer 12 is located on the substrate 11 and includes multiple light-emitting layers 121.

[0038] The light conversion structure layer 13 is located on the side of the display structure layer 12 away from the substrate 11, and includes a dam pattern 131 and a plurality of light conversion layers 132. The dam pattern 131 includes a plurality of first openings k1. The orthographic projections of the plurality of light conversion layers 132 on the substrate 11 overlap with the orthographic projections of the plurality of first openings k1 on the substrate 11, and the orthographic projections of the first openings k1 on the substrate 11 overlap with the orthographic projections of the light-emitting layer 121 on the substrate 11.

[0039] The color filter structure layer 14 is located on the side of the display structure layer 12 away from the substrate 11, and includes a first light-transmitting protective layer 141, a light-shielding pattern 142, and a color filter layer 143. The first light-transmitting protective layer 141 is located on the side of the light conversion structure layer 13 away from the substrate 11. The orthographic projections of the dam pattern 131 and the light conversion layer 132 on the substrate 11 are located within the orthographic projection of the first light-transmitting protective layer 141 on the substrate 11. The light-shielding pattern 142 is located on the side of the first light-transmitting protective layer 141 away from the substrate 11. The color filter layer 143 is located on the side of the light-shielding pattern 142 away from the substrate 11. The light-shielding pattern 142 includes a plurality of second openings k2. The orthographic projections of the second openings k2 on the substrate 11 overlap with the orthographic projections of the first openings k1 on the substrate 11.

[0040] In summary, the display panel provided in this application includes a substrate and a display structure layer, a light conversion structure layer, and a color filter structure layer located on the substrate. The color filter structure layer includes a first light-transmitting protective layer, a light-shielding pattern, and a color filter layer. The first light-transmitting protective layer is located between the light conversion structure layer and the light-shielding pattern. The dam pattern and the orthographic projection of the light conversion layer on the substrate are located within the orthographic projection of the first light-transmitting protective layer on the substrate. That is, the first light-transmitting protective layer can cover the light conversion layer to protect the light conversion layer, reduce the possibility of damage to the light conversion layer, and achieve the effect of improving the yield of the display panel.

[0041] In addition, since the orthographic projection of the second opening on the light-shielding pattern onto the substrate overlaps with the orthographic projection of the first opening on the dam pattern onto the substrate, the light-shielding pattern and the dam pattern can form a higher dam to block the light emitted from the light conversion layer from propagating in a direction parallel to the substrate. This can improve the problem of lateral light leakage and achieve the effect of improving the color gamut of the display panel.

[0042] Optionally, the display panel 10 further includes an encapsulation layer t1, which is located between the light-emitting layer 121 and the light conversion structure layer 13, and covers the display structure layer 12. The encapsulation layer t1 can be used to seal the display structure layer 12 to improve the reliability of the display panel. For example, the encapsulation layer t1 can be a thin film encapsulation (TFE) layer, which can be a multilayer composite barrier film, for example, it can include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer arranged sequentially in a direction away from the substrate 11.

[0043] Optionally, the display structure layer 12 further includes a pixel definition layer 122, which includes a plurality of pixel openings k3. The orthographic projections of the plurality of light-emitting layers 121 on the substrate 11 overlap with the orthographic projections of the pixel openings k3 on the substrate 11. The pixel definition layer 122 can be used to define the light-emitting area of ​​the light-emitting layer 121.

[0044] Optionally, the manufacturing process of the display panel 10 may include: 1) A display structure layer 12 and an encapsulation layer t1 located on the display structure layer 12 are formed on the substrate 11.

[0045] 2) A dam pattern 131 is formed on the substrate 11 on which the encapsulation layer t1 is formed. The dam pattern 131 can be formed by photolithography.

[0046] 3) A light conversion layer 132 is formed on the substrate 11 on which the dam pattern 131 is formed. The light conversion layer 132 can be formed by inkjet printing or photolithography.

[0047] 4) A first light-transmitting protective layer 141 is formed on the substrate 11 on which the light conversion layer 132 is formed. The first light-transmitting protective layer 141 covers the light conversion layer 132 below and can protect the light conversion layer 132, thereby reducing the impact of subsequent processes on the light conversion layer 132 and improving the reliability of the display panel.

[0048] The first light-transmitting protective layer 141 can be an inorganic protective layer formed by chemical vapor deposition (CVD) or atomic layer deposition (ALD) processes. The material can include at least one of silicon oxide, silicon nitride, silicon oxynitride, or aluminum oxide. Inorganic protective layers have high hardness and strong protective performance, which can improve the protection effect on the light conversion layer.

[0049] 5) A light-shielding pattern 142 and a color filter layer 143 are formed on the substrate 11 on which the first light-transmitting protective layer 141 is formed.

[0050] In one exemplary embodiment, please refer to Figure 1 and Figure 2 The orthographic projection of the second opening k2 on the substrate 11 lies within the orthographic projection of the first opening k1 on the substrate 11. That is, the size of the second opening k2 on the light-shielding pattern 142 is smaller than the first opening k1 on the dam pattern 131. Thus, the light-emitting area of ​​the light conversion layer 132 can be limited by the light-shielding pattern 142 in the color filter structure layer 14. The area of ​​the first opening k1 on the dam pattern 131 is the light-emitting area of ​​the light conversion layer 132. In this structure, the light-emitting area of ​​the light conversion layer 132 is larger than the area of ​​the second opening k2 in the light-shielding pattern 142 in the color filter structure layer 14. This means that the light-emitting area of ​​the light conversion layer 132 is larger, which improves the ability of the light conversion layer 132 to receive light from the light-emitting layer 121, allowing the light conversion layer 132 to receive more light emitted from the light-emitting layer 121, thereby improving the luminous efficiency of the display panel.

[0051] Optionally, the size of the first opening k1 in the first direction f1 is less than or equal to 1.5 times the size of the second opening k2, where the first direction f1 is parallel to the substrate 11. That is, in the first direction f1, the size of the first opening k1 is larger than the size of the second opening k2, but less than or equal to 1.5 times the size of the second opening k2. This ensures that even when the first opening k1 is larger than the second opening k2, it will not be too large and affect parameters such as pixel density. Alternatively, the first direction f1 can also be the arrangement direction of two adjacent light-emitting layers 121.

[0052] When the aperture ratio of the light-shielding pattern 142 increases, the reflectivity of the display panel also increases; when the aperture ratio of the light-shielding pattern 142 decreases, the reflectivity of the display panel 10 also decreases. Based on this, the light-shielding pattern 142 can be made to have the maximum aperture ratio while meeting the requirements for the reflectivity of the display panel 10, so as to increase the brightness of the display panel 10.

[0053] In addition, when the size of the first opening k1 is larger than the size of the second opening k2, the light conversion layer 132 can have a larger size, which can improve the light receiving efficiency of the light conversion layer 132 for the light emitted by the light-emitting layer 121.

[0054] Optionally, the color filter layer 143 includes multiple color resist layers c1, and the orthographic projection of the second opening k2 on the substrate 11 is located within the orthographic projection of the color resist layer c1 on the substrate 11. That is, the size of the color resist layer c1 is larger than the size of the second opening k2 in the light-shielding pattern 142, and the color resist layer c1 covers the second opening k2. With this structure, the light emitted from the second opening k2 below can be filtered by the color resist layer c1, thereby reducing the possibility of the light emitted from the light conversion layer 132 hitting the color resist layer c1 above the adjacent light conversion layer 132, so as to improve the problems of light leakage and color crosstalk, and improve the display effect of the display panel.

[0055] It should be noted that the display panel 10 provided in this application embodiment may include a plurality of sub-pixel units px. Each sub-pixel unit px includes an emissive layer 121, a light conversion layer 132, a second opening k2, and a color resist layer c1. The emissive layer 121 is used to emit light to the light conversion layer 132. The light can be excitation light, such as blue light. The light conversion layer 132 is used to emit colored light under the excitation of the light emitted by the emissive layer 121. The colored light is restricted by the second opening k2 and then directed to the color resist layer c1. After being filtered by the color resist layer c1, it is emitted out of the display panel 10.

[0056] The plurality of sub-pixel units px can include multiple sub-pixel units px for emitting multiple colors of light. For example, the plurality of sub-pixel units px can include a red sub-pixel unit for emitting red light, a green sub-pixel unit for emitting green light, and a blue sub-pixel unit for emitting blue light. The light-emitting layer 121 in different sub-pixel units px can be a light-emitting layer for emitting excitation light of the same color, such as a light-emitting layer for emitting blue light. In the red sub-pixel unit, the light conversion layer 132 is a light conversion layer capable of emitting red light under the excitation of excitation light, and the color resist layer c1 can be a red color resist layer capable of transmitting red light while filtering other colors of light. In the green sub-pixel unit, the light conversion layer 132 is a light conversion layer capable of emitting green light under the excitation of excitation light, and the color resist layer can be a green color resist layer capable of transmitting green light while filtering other colors of light. In the blue sub-pixel unit, the light conversion layer 132 can be a light-transmitting layer, and the color resist layer c1 can be a blue color resist layer capable of transmitting blue light while filtering other colors of light.

[0057] Optionally, the size of the second opening k2 in the first direction f1 is greater than or equal to half the size of the color resist layer c1 in the first direction f1. That is, in the first direction f1, the size of the second opening k2 is smaller than the size of the color resist layer c1, but greater than or equal to half the size of the color resist layer c1 in the first direction f1. This can prevent the second opening k2 from being too small and affecting the conversion of light emitted by the light-emitting layer 121 by the light conversion layer 132.

[0058] Optionally, the orthographic projection of the light-emitting layer 121 onto the substrate 11 lies within the orthographic projection of the first opening k1 onto the substrate 11, and the size of the light-emitting layer 121 in the first direction f1 is greater than or equal to half the size of the first opening k1 in the first direction f1, where the first direction f1 is parallel to the substrate 11. In this structure, the size of the light-emitting layer 121 is smaller than the size of the first opening k1, which increases the proportion of light emitted from the light-emitting layer 121 that illuminates the light conversion layer 132. Furthermore, in the first direction f1, the size of the light-emitting layer 121 is greater than half the size of the first opening k1, which increases the size of the light-emitting layer 121 and mitigates the reduced lifetime caused by its small size.

[0059] Optionally, the color filter layer 143 includes multiple color resist layers c1, and the orthographic projection of the first opening k1 on the substrate 11 is located within the orthographic projection of the color resist layer c1 on the substrate 11. With this structure, the proportion of light emitted from the light conversion layer 132 that is directed to the color resist layer c1 above can be increased, thereby reducing the possibility of light leakage and color crosstalk, and improving the display effect of the display panel.

[0060] Furthermore, in the above embodiments, the dimensional relationships of the structures such as the first opening k1, the second opening k2, the color resist layer c1, and the light-emitting layer 121 are defined in the first direction f1. This relationship can be applied in multiple directions. For example, the size of the second opening k2 in the second direction is greater than or equal to half the size of the color resist layer c1 in the second direction. That is, in the second direction, the size of the second opening k2 is smaller than the size of the color resist layer c1, but greater than or equal to half the size of the color resist layer c1 in the second direction. This avoids the second opening k2 being too small and affecting the conversion of light emitted by the light-emitting layer 121 by the light conversion layer 132. Here, the second direction is perpendicular to the first direction and parallel to the substrate 11. Similarly, the orthographic projection of the light-emitting layer 121 on the substrate 11 lies within the orthographic projection of the first opening k1 on the substrate 11, and the size of the light-emitting layer 121 in the second direction is greater than or equal to half the size of the first opening k1 in the second direction. The second direction is parallel to the substrate 11. In this structure, the size of the light-emitting layer 121 is smaller than the size of the first opening k1, which can increase the proportion of light emitted by the light-emitting layer 121 that illuminates the light conversion layer 132. In the second direction, the size of the light-emitting layer 121 is larger than half of the first opening k1, which can increase the size of the light-emitting layer 121 and improve the reduced lifespan caused by the small size of the light-emitting layer 121.

[0061] In one exemplary embodiment, the color filter structure layer 14 further includes a light-transmitting cover layer 144, which is located between the light-shielding pattern 142 and the color filter layer 143, and the orthogonal projection of the second opening k2 on the substrate 11 is located within the orthogonal projection of the light-transmitting cover layer 144 on the substrate 11.

[0062] The light-transmitting cover layer 144 can be used to protect the color film layer 143 and the light-blocking pattern 142. For example, the light-transmitting cover layer 144 can be an overcoat (OC) layer, which can be used to achieve planarization and protect adjacent film layers.

[0063] Please refer to Figure 1 and Figure 3 , Figure 3 yes Figure 1 Another cross-sectional view of the display panel shown is illustrated. Figure 3 yes Figure 1 (The diagram shows another cross-sectional structure of the display panel at point AA). In this structure, the refractive index of the light-transmitting cover layer 144 is less than that of the first light-transmitting protective layer 141. Under this structure, the light emitted from the light conversion layer 132 first passes through the first light-transmitting protective layer 141 and then strikes the light-transmitting cover layer 144, whose refractive index is less than that of the first light-transmitting protective layer 141. At this point, light rays with a larger incident angle undergo total internal reflection. This portion of the light includes the excitation light emitted from the light-emitting layer 121 that has not been converted by the light conversion layer 132, as well as the colored light converted from the excitation light in the light conversion layer 132. The wavelength of the colored light converted by the light conversion layer 132 is greater than that of the excitation light. Therefore, under the same conditions, the critical angle for total internal reflection of the excitation light is smaller than that of the colored light. Based on this, more excitation light (this portion of the excitation light is the excitation light that was not converted by the light conversion layer 132 and is emitted again) undergoes total internal reflection and is emitted back to the light conversion layer 132, where it is converted back into colored light. This improves the conversion efficiency of the light conversion layer 132 for the light emitted from the light-emitting layer 121, thereby increasing the brightness of the display panel. In other words, the light-transmitting cover layer 144 in this structure has a light extraction function.

[0064] Optionally, the refractive index of the light-transmitting cover layer 144 may be less than or equal to 1.42, or the refractive index of the light-transmitting cover layer 144 may be less than or equal to 1.3. The refractive index of the first light-transmitting protective layer 141 may be greater than or equal to 1.6.

[0065] Optionally, the light-transmitting capping layer 144 includes a light-transmitting substrate and a plurality of light-transmitting hollow particles located within the light-transmitting substrate. In this structure, the light-transmitting capping layer 144 can be a low refractive index layer (LRI), with the refractive index inside the hollow particles being 1, thus lowering the overall refractive index of the light-transmitting capping layer 144. The hollow particles can be hollow silicon oxide particles, with a size between 20 nanometers and 140 nanometers, for example, 100 nanometers.

[0066] Please refer to Figure 1 and Figure 4 , Figure 4 yes Figure 1 Another cross-sectional view of the display panel shown is illustrated. Figure 4 yes Figure 1 (The diagram shows another cross-sectional structure of the display panel at point AA). The color filter structure layer 14 further includes a first light-transmitting adjustment layer 145, located between the light-transmitting cover layer 144 and the light-shielding pattern 142. The orthographic projection of the second opening k2 onto the substrate 11 lies within the orthographic projection of the first light-transmitting adjustment layer 145 onto the substrate 11. The refractive index of the first light-transmitting adjustment layer 145 is less than the refractive index of the first light-transmitting protective layer 141.

[0067] In this structure, the first light-transmitting adjustment layer 145 covers the second opening k2 and has a refractive index lower than the lower first light-transmitting protective layer 141. In this structure, light emitted from the light conversion layer 132 first passes through the first light-transmitting protective layer 141 and then strikes the first light-transmitting adjustment layer 145, whose refractive index is lower than that of the first light-transmitting protective layer 141. At this point, light with a larger incident angle undergoes total internal reflection. This portion of light includes excitation light emitted from the light-emitting layer 121 that has not been converted by the light conversion layer 132, and colored light converted from the excitation light in the light conversion layer 132. The critical angle for total internal reflection of the excitation light is lower than the critical angle for total internal reflection of the colored light, resulting in more excitation light undergoing total internal reflection and striking the light conversion layer 132 again, where it is converted back into colored light. This improves the conversion efficiency of the light conversion layer 132 for light emitted from the light-emitting layer 121, thereby enhancing the luminous effect of the display panel. In this structure, the first light-transmitting adjustment layer 145 is a film layer with light extraction function.

[0068] In this structure, the light-transmitting cover layer 144 can serve as a protective cover layer. Furthermore, since the light-transmitting cover layer 144 separates the first light-transmitting adjustment layer 145 from the color filter layer 143, direct contact between the first light-transmitting adjustment layer 145 and the color filter layer 143 is avoided. This prevents the first light-transmitting adjustment layer 145 from being damaged by corrosion or other issues during the formation of the color filter layer 143, thus enhancing the protection of the first light-transmitting adjustment layer 145 and ultimately improving the reliability of the display panel.

[0069] Optionally, the refractive index of the first light-transmitting adjustment layer 145 may be less than or equal to 1.42, or the refractive index of the first light-transmitting adjustment layer 145 may be less than or equal to 1.3.

[0070] Optionally, the first light transmittance adjustment layer 145 includes a light transmittance substrate and a plurality of light transmittance hollow particles located within the light transmittance substrate. In this structure, the first light transmittance adjustment layer 145 can be a low refractive index layer, with the refractive index inside the hollow particles being 1, thus lowering the overall refractive index of the first light transmittance adjustment layer 145. The hollow particles can be hollow silicon oxide particles with a size between 20 nanometers and 140 nanometers, for example, 100 nanometers.

[0071] Please refer to Figure 1 and Figure 5 , Figure 5 yes Figure 1 Another cross-sectional view of the display panel shown is illustrated. Figure 5 yes Figure 1 (The diagram shows another cross-sectional view of the display panel at point AA). The display panel 10 also includes a second light-transmitting protective layer 14a, located between the first light-transmitting adjustment layer 145 and the color filter layer 143. This second light-transmitting protective layer 14a protects the underlying first light-transmitting adjustment layer 145, thereby improving the reliability of the display panel. For example, the first light-transmitting adjustment layer 145 can be an inorganic protective layer formed by chemical vapor deposition, and the material can include at least one of silicon oxide, silicon nitride, or silicon oxynitride. Inorganic protective layers have high hardness and strong protective performance, which can improve the protection effect on the light conversion layer.

[0072] Please refer to Figure 1 and Figure 6 , Figure 6 yes Figure 1 Another cross-sectional view of the display panel shown is illustrated. Figure 6 yes Figure 1 (The diagram shows another cross-sectional structure of the display panel at point AA). The color filter structure layer 14 further includes a second light-transmitting adjustment layer 146, which is located on the side of the first light-transmitting protective layer 141 closest to the substrate 11. The orthographic projection of the second opening k2 onto the substrate 11 lies within the orthographic projection of the second light-transmitting adjustment layer 146 onto the substrate 11. The refractive index of the second light-transmitting adjustment layer 146 is less than the refractive index of the light conversion layer 132.

[0073] In this structure, the second light-transmitting adjustment layer 146 covers the second opening k2, and its refractive index is less than that of the light conversion layer 132 below. In this structure, light emitted from the light conversion layer 132 will strike the second light-transmitting adjustment layer 146, whose refractive index is less than that of the light conversion layer 132. At this time, light with a larger incident angle will undergo total internal reflection at the interface between the light conversion layer 132 and the second light-transmitting adjustment layer 146. This portion of light includes excitation light emitted from the light-emitting layer 121 that has not been converted by the light conversion layer 132, and colored light converted from the excitation light in the light conversion layer 132. The critical angle for total internal reflection of the excitation light is less than the critical angle for total internal reflection of the colored light, resulting in more excitation light undergoing total internal reflection and striking the light conversion layer 132 again, where it will be converted back into colored light. This improves the conversion efficiency of the light conversion layer 132 for light emitted from the light-emitting layer 121, thereby enhancing the light-emitting effect of the display panel. In this structure, the second light-transmitting adjustment layer 146 is a film layer with light extraction function.

[0074] In addition, under this structure, the light emitted from the light conversion layer 132 can first enter the second light-transmitting adjustment layer 146 with light extraction function, which can improve the light extraction effect of the second light-transmitting adjustment layer 146 and further improve the brightness of the display panel.

[0075] Optionally, the refractive index of the second light transmission adjustment layer 146 may be less than or equal to 1.42, or the refractive index of the second light transmission adjustment layer 146 may be less than or equal to 1.3.

[0076] Optionally, the second light transmittance adjustment layer 146 includes a light transmittance substrate and a plurality of light transmittance hollow particles located within the light transmittance substrate. In this structure, the second light transmittance adjustment layer 146 can be a low refractive index layer, with the refractive index inside the hollow particles being 1, thus lowering the overall refractive index of the second light transmittance adjustment layer 146. The hollow particles can be hollow silicon oxide particles with a size between 20 nanometers and 140 nanometers, for example, 100 nanometers.

[0077] Optionally, the display panel 10 may further include a light-transmitting cover layer 144, located between the light-shielding pattern 142 and the color filter layer 143. This light-transmitting cover layer 144 can serve as a protective layer, used for planarization and protecting adjacent film layers. Alternatively, the light-transmitting cover layer 144 can be an inorganic protective layer formed by chemical vapor deposition. Inorganic protective layers have high hardness and strong protective performance, enhancing the protection of the light-shielding pattern 142 and the first light-transmitting protective layer 141.

[0078] Please refer to Figure 1 and Figure 7 , Figure 7 yes Figure 1Another cross-sectional view of the display panel shown is illustrated. Figure 7 yes Figure 1 (The diagram shows another cross-sectional structure of the display panel at point AA). The color filter structure layer 14 also includes a third light transmission adjustment pattern 147, which is located between the first light transmission protective layer 141 and the light transmission cover layer 144.

[0079] The third light-transmitting adjustment pattern 147 includes multiple light-transmitting adjustment plates 1471. The orthographic projections of the multiple light-transmitting adjustment plates 1471 on the substrate 11 overlap with the orthographic projections of the multiple second openings k2 on the substrate 11. The refractive index of the light-transmitting adjustment plates 1471 is less than the refractive index of the first light-transmitting protective layer 141. In this structure, the multiple light-transmitting adjustment plates 1471 are located at the multiple second openings k2, and the refractive index of the light-transmitting adjustment plates 1471 is less than the refractive index of the lower first light-transmitting protective layer 141. Therefore, the light emitted from the light conversion layer 132 will first pass through the first light-transmitting protective layer 141, and then strike the light-transmitting adjustment plates 1471, whose refractive index is less than that of the first light-transmitting protective layer 141. At this time, the light with a larger incident angle will undergo total internal reflection at the interface between the light-transmitting adjustment plate 1471 and the first light-transmitting protective layer 141. The light includes excitation light emitted from the light-emitting layer 121 that is not converted by the light conversion layer 132, and colored light converted by the excitation light in the light conversion layer 132. The critical angle for total internal reflection of the excitation light is smaller than the critical angle for total internal reflection of the colored light, resulting in more excitation light undergoing total internal reflection and striking the light conversion layer 132 again, where it is converted back into colored light. This improves the conversion efficiency of the light conversion layer 132 for the light emitted from the light-emitting layer 121, thereby enhancing the luminous effect of the display panel. Multiple light-transmitting adjustment plates 1471 can be respectively disposed in multiple second openings k2 of the light-shielding pattern 142, thus reducing the overall thickness of the color filter structure layer 14.

[0080] Optionally, the refractive index of the light-transmitting adjustment sheet 1471 may be less than or equal to 1.42, or the refractive index of the light-transmitting adjustment sheet 1471 may be less than or equal to 1.3.

[0081] Optionally, the light-transmitting adjustment sheet 1471 includes a light-transmitting substrate and a plurality of light-transmitting hollow particles located within the light-transmitting substrate. In this structure, the light-transmitting adjustment sheet 1471 can be a low-refractive-index layer, with the refractive index inside the hollow particles being 1, thus lowering the overall refractive index of the light-transmitting adjustment sheet 1471. The hollow particles can be hollow silicon oxide particles with a size between 20 nanometers and 140 nanometers, for example, 100 nanometers.

[0082] Optionally, the light-transmitting cover layer 144 can be a protective cover layer, which can be used to achieve planarization and protect adjacent film layers. Alternatively, the light-transmitting cover layer 144 can be an inorganic protective layer formed by chemical vapor deposition. Inorganic protective layers have high hardness and strong protective performance, which can improve the protection effect on the light-shielding pattern 142 and the light-transmitting adjustment sheet 1471.

[0083] Please refer to Figure 1 and Figure 8 , Figure 8 yes Figure 1 Another cross-sectional view of the display panel shown is illustrated. Figure 8 yes Figure 1 The diagram shows a cross-sectional structure of the display panel at point BB. The thickness h1 of the light conversion layer 132 in the second direction f2 is greater than or equal to the thickness h2 of the dam pattern 131 in the second direction f2, and less than or equal to 1.3 times the thickness of the dam pattern 131 in the second direction f2. The second direction f2 is perpendicular to the substrate 11. The light conversion capability of the light conversion layer 132 is positively correlated with its volume. For example, when the light conversion layer 132 is a quantum dot layer, a larger volume of the light conversion layer 132 results in more quantum dots and a stronger light conversion capability. Increasing the thickness of the light conversion layer 132 increases its volume, thereby increasing its light conversion capability. In this embodiment, the thickness of the light conversion layer 132 is increased to be greater than the thickness of the raised pattern 131, thus improving its light conversion capability and consequently increasing the brightness of the display panel.

[0084] In addition, when the thickness h1 of the light conversion layer 132 in the second direction f2 is less than or equal to 1.3 times the thickness of the dam pattern 131 in the second direction f2, it can avoid the light conversion layer 132 from affecting other film layers above when the thickness is too large, thus achieving the effect of improving the reliability of the display panel.

[0085] For example, the light conversion layer 132 can be raised, which increases the volume of the light conversion layer 132 without affecting the limitation of the light-emitting area of ​​the light conversion layer 132 by the light-shielding pattern 142. In addition, compared with the recessed structure of the light conversion layer 132, this raised structure can also prevent the photoresist from flowing to the light conversion layer 132 when forming the light-shielding pattern 142, thereby improving the yield of the display panel.

[0086] Optionally, the target thickness h3 is greater than or equal to the thickness of the light conversion layer 132 in the second direction f2, and less than or equal to 1.2 times the thickness of the light conversion layer 132 in the second direction f2. The target thickness is the sum of the thicknesses of the dam pattern 131, the first light-transmitting protective layer 141, and the light-shielding pattern 142 in the second direction f2. In this structure, the light-shielding pattern 142 is higher than the light conversion layer 132, which can improve the ability of the light-shielding pattern 142 to block light emitted from the light conversion layer 132 in the horizontal direction, reduce the light emitted towards adjacent sub-pixel units px, improve the problems of light leakage and color crosstalk, and improve the display effect of the display panel.

[0087] In addition, when the target thickness h3 is less than or equal to 1.2 times the thickness of the light conversion layer 132 in the second direction f2, it can prevent the light-shielding pattern 142 from affecting the upper film layer when it is too high, and it can also prevent the light-shielding pattern 142 from affecting the overall thickness of the display panel 10 when it is too thick.

[0088] Please refer to Figure 1 and Figure 9 , Figure 9 yes Figure 1 Another cross-sectional view of the display panel shown is illustrated. Figure 9 yes Figure 1 (Another cross-sectional view of the display panel at BB is shown). The dam pattern 131 may include multiple dam structures 1311. Each dam structure 1311 may have an undercut structure u1 on each of its opposite sides in the first direction f1. The undercut structure u1 is located between the two ends of the dam structure 1311 in the second direction f2, and the undercut structure u1 may be a structure formed due to the manufacturing process.

[0089] The light conversion layer 132 can be formed by inkjet printing (IJP) process. For example, the formation process of the light conversion layer 132 can include placing light conversion material ink in the second opening k2 of the dam pattern 131. After the light conversion material ink solidifies in the second opening k2, it can form the light conversion layer 132. The dam structure 1311 with the undercut structure u1 can form a physical barrier, making it difficult for the light conversion material ink to climb along the side wall of the dam structure 1311 when it solidifies. This can prevent the light conversion material ink from flowing into the adjacent second opening k2, thereby improving the yield of the display panel 10.

[0090] Among them, the dam structure 1311 can meet the following requirements: 1.5≤(L2-L1) / 2≤4; Wherein, L2 is the dimension of the end of the dam structure 1311 away from the substrate 11 in the second direction f2, and L1 is the dimension of the undercut structure u1 in the second direction f2. With this structure, the risk of the dam structure 1311 breaking due to excessive narrowness at the undercut structure u1 can be reduced while improving the yield of the display panel through the undercut structure u1.

[0091] Optionally, the light-shielding pattern 142 includes multiple light-shielding blocks 1421 located on the dam structure 1311. The orthographic projection of the dam structure 1311 onto the substrate 11 can lie within the orthographic projection of the light-shielding blocks 1421 onto the substrate 11. With this structure, the light-shielding blocks 1421 and the dam structure 1311 can jointly limit the direction of the emitted light from the light conversion layer 132, reducing the risk of lateral light leakage and color crosstalk, and improving the display effect of the display panel 10.

[0092] The shading block 1421 and the dam structure 1311 can satisfy: 1≤L3 / L2≤1.3.

[0093] L3 is the size of the light-shielding block 1421 in the light-shielding pattern 142 in the first direction f1. With this structure, the size of the light-shielding block 1421 can be avoided from being too large and affecting the aperture ratio of the display panel 10.

[0094] Please refer to Figure 1 and Figure 10 , Figure 10 yes Figure 1 Another cross-sectional view of the display panel shown is illustrated. Figure 10 yes Figure 1 (The diagram shows another cross-sectional structure of the display panel at BB). The color filter layer 143 includes multiple color resist layers c1, and the orthographic projection of the second opening k2 onto the substrate 11 lies within the orthographic projection of the color resist layer c1 onto the substrate 11. That is, the size of the color resist layer c1 is larger than the size of the second opening k2 in the light-shielding pattern 142, and the color resist layer c1 covers the second opening k2. With this structure, the color resist layer c1 can filter the light emitted from the second opening k2 below, thus reducing the possibility of light emitted from the light conversion layer 132 hitting the adjacent color resist layer c1 above the light conversion layer 132, thereby improving light leakage and color crosstalk issues and enhancing the display effect of the display panel.

[0095] Additionally, an overlapping region s1 may exist between two adjacent color resist layers c1. This overlapping region s1 can be a process redundancy provided to prevent alignment deviations. For example, in the first direction f1, the size of this overlapping region s1 is less than 5 micrometers.

[0096] Optionally, the light conversion layer 132 can be formed by inkjet printing or by photolithography. When the light conversion layer 132 is a structure formed by photolithography, the edge of the light conversion layer 132 can cover the dam structure 1311, thus allowing for redundancy to account for process deviations. The photolithography process involved in the embodiments of this application may include coating photoresist, exposure, development, etching, and photoresist stripping.

[0097] In one exemplary embodiment, the light conversion layer 132 may include a substrate layer and wavelength conversion particles uniformly dispersed in the substrate layer. The substrate layer may be made of a resin, such as epoxy resin, silicone resin, polystyrene, and acrylate, but this embodiment is not limited thereto. For example, the substrate layer may include various transparent media that do not affect the wavelength conversion performance of the wavelength conversion particles.

[0098] Wavelength-converting particles are particles used to convert the wavelength of light incident upon them. These particles can be quantum dots, including quantum dot (QD) fluorescent materials, or particles including phosphorescent materials. Quantum dots are crystal structures with a size of several nanometers, comprising hundreds to thousands of atoms, and exhibit a quantum confinement effect (an increased band gap due to their small size). When light with a wavelength having an energy higher than the band gap is incident on a quantum dot, the quantum dot is excited by absorbing the light and falls to its ground state when emitting light of a specific wavelength. The emitted light of a specific wavelength has an energy value corresponding to the band gap. Using such quantum dots, the luminescence properties can be controlled based on the quantum confinement effect by adjusting the size and composition of the quantum dots. Since the emitted light of a specific wavelength has an energy value corresponding to the band gap, selecting quantum dot materials with different band gaps will convert the incident light on the quantum dot into different wavelengths. For example, light within a desired wavelength range can be obtained by controlling the composition of the quantum dot. On the other hand, even quantum dots made of the same material can have different wavelengths depending on their particle size. Since the smaller the quantum dot, the shorter the wavelength of the light emitted from it, the desired wavelength range of light can be obtained by controlling the size of the quantum dot.

[0099] Quantum dots may include, for example, at least one of group II-VI compounds, group II-V compounds, group III-VI compounds, group III-V compounds, group IV-VI compounds, group I-III-VI compounds, group II-IV-VI compounds, and group II-IV-V compounds.

[0100] Quantum dots can include a core and a shell that covers the core. The nucleus may be or include at least one of the following: cadmium sulfide (CdS), cadmium selenide (CdSe), cadmium telluride (CdTe), zinc sulfide (ZnS), zinc selenide (ZnSe), zinc telluride (ZnTe), gallium nitride (GaN), gallium phosphide (GaP), gallium arsenide (GaAs), gallium antimonide (GaSb), aluminum nitride (AlN), aluminum phosphide (AlP), aluminum arsenide (AlAs), aluminum antimonide (AlSb), indium phosphide (InP), indium arsenide (InAs), indium antimonide (InSb), silicon carbide (SiC), calcium (Ca), selenium (Se), indium (In), phosphorus (P), iron (Fe), platinum (Pt), nickel (Ni), cobalt (Co), aluminum (Al), silver (Ag), gold (Au), copper (Cu), iron-platinum (FePt), ferrous oxide (Fe2O3), iron (II, III) oxides (Fe3O4), silicon (Si), and germanium (Ge), but the invention is not limited thereto. The shell may be or include at least one of the following: zinc sulfide (ZnS), zinc selenide (ZnSe), zinc telluride (ZnTe), cadmium sulfide (CdS), cadmium selenide (CdSe), cadmium telluride (CdTe), mercuric sulfide (HgS), mercuric selenide (HgSe), mercuric telluride (HgTe), aluminum nitride (AlN), aluminum phosphide (AlP), aluminum arsenide (AlAs), aluminum antimonide (AlSb), gallium nitride (GaN), phosphorus Gallium nitride (GaP), gallium arsenide (GaAs), gallium antimonide (GaSb), cadmium selenide (GaSe), indium nitride (InN), indium phosphide (InP), indium arsenide (InAs), indium antimonide (InSb), thallium nitride (TlN), thallium phosphide (TlP), thallium arsenide (TlAs), thallium antimonide (TlSb), lead sulfide (PbS), lead selenide (PbSe), and lead telluride (PbTe), but this application does not limit the application to these.

[0101] For example, when the light conversion layer 132 is a quantum dot layer, in a sub-pixel unit px used to emit target color light, the light emitted by the light-emitting layer 121 is blue light. This blue light, used as excitation light, is directed towards the light conversion layer 132. A portion of this blue light is absorbed by the quantum dots in the light conversion layer 132 and converted into target color light, such as red or green light. The other portion of the blue light is emitted from the light conversion layer 132 together with the target color light. The color filter layer 143 blocks the blue light directed towards it and transmits the target color light, thus achieving the function of emitting the target color light. In addition, the blocking of blue light by the color filter layer 143 can also achieve a full black display under screen-off conditions, thereby improving the display effect of the display panel 10.

[0102] In addition, the display panel 10 provided in this application embodiment can be an organic light-emitting diode (OLED) display panel. Based on this, the light-emitting layer 121 is the light-emitting layer in the organic light-emitting diode. The organic light-emitting diode may also include an anode and a cathode. The anode and cathode are used to drive the light-emitting layer 121 to emit light. The light-emitting layer 121 involved in this application embodiment may refer to the part of the light-emitting layer of the organic light-emitting diode that actually emits light.

[0103] A quantum dot organic light-emitting diode (OLED) display panel that utilizes a quantum dot layer is called a quantum dot organic light-emitting diode (QD-OLED) display panel. Compared to traditional organic light-emitting diode (OLED) display panels, quantum dot OLED display panels have features such as high color gamut and high image quality.

[0104] Of course, in the display panel provided in this application embodiment, the light-emitting layer 121 can also be other types of devices, such as light-emitting diodes, mini light-emitting diodes, and micro light-emitting diodes, etc., and this application embodiment does not limit this.

[0105] Furthermore, the display panel provided in this application embodiment may also include a circuit structure layer, which may be located between the display structure layer and the substrate. The circuit structure layer may include multiple pixel circuits and gate driving circuits, etc. The gate driving circuit is electrically connected to the multiple pixel circuits, and the multiple pixel circuits are respectively electrically connected to multiple organic light-emitting diodes. The gate driving circuit may cooperate with the multiple pixel circuits to drive the light-emitting layer in the light-emitting diodes to emit light.

[0106] In summary, the display panel provided in this application includes a substrate and a display structure layer, a light conversion structure layer, and a color filter structure layer located on the substrate. The color filter structure layer includes a first light-transmitting protective layer, a light-shielding pattern, and a color filter layer. The first light-transmitting protective layer is located between the light conversion structure layer and the light-shielding pattern. The dam pattern and the orthographic projection of the light conversion layer on the substrate are located within the orthographic projection of the first light-transmitting protective layer on the substrate. That is, the first light-transmitting protective layer can cover the light conversion layer to protect the light conversion layer, reduce the possibility of damage to the light conversion layer, and achieve the effect of improving the yield of the display panel.

[0107] In addition, since the orthographic projection of the second opening on the light-shielding pattern onto the substrate overlaps with the orthographic projection of the first opening on the dam pattern onto the substrate, the light-shielding pattern and the dam pattern can form a higher dam to block the light emitted from the light conversion layer from propagating in a direction parallel to the substrate. This can improve the problem of lateral light leakage and achieve the effect of improving the color gamut of the display panel.

[0108] Furthermore, this application also provides a display device, which includes a housing and any of the display panels provided in the above embodiments. This display device can be a virtual reality device, an augmented reality device, a mobile phone, a tablet computer, a laptop computer, a monitor, a vertical display screen, a television, a smartwatch, a smart bracelet, and smart glasses, among other devices with display functions.

[0109] Because it has the same display panel, the display device can also have a similar effect. That is, the display panel in the display device includes a substrate and a display structure layer, a light conversion structure layer and a color filter structure layer located on the substrate. The color filter structure layer includes a first light-transmitting protective layer, a light-shielding pattern and a color filter layer. The first light-transmitting protective layer is located between the light conversion structure layer and the light-shielding pattern, and the dam pattern and the orthographic projection of the light conversion layer on the substrate are located within the orthographic projection of the first light-transmitting protective layer on the substrate. In other words, the first light-transmitting protective layer can cover the light conversion layer to protect the light conversion layer, reduce the possibility of damage to the light conversion layer and achieve the effect of improving the yield of the display device.

[0110] In addition, since the orthographic projection of the second opening on the light-shielding pattern onto the substrate overlaps with the orthographic projection of the first opening on the dam pattern onto the substrate, the light-shielding pattern and the dam pattern can form a higher dam to block the light emitted from the light conversion layer from propagating in a direction parallel to the substrate. This can improve the problem of lateral light leakage and achieve the effect of improving the color gamut of the display device.

[0111] In some embodiments of this application, the substrate can be an inorganic material substrate or an organic material substrate. For example, in one embodiment of this application, the substrate material can be a glass material such as soda-lime glass, quartz glass, or sapphire glass. In another embodiment of this application, the substrate material can be polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polyvinyl phenol (PVP), polyether sulfone (PES), polyimide, polyamide, polyacetal, polycarbonate (PC), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or a combination thereof. In another embodiment of this application, the substrate can also be a flexible substrate, for example, the substrate material can be polyimide (PI). The substrate can also be a composite of multiple materials. For example, in one embodiment of this application, the substrate may include a bottom film, a pressure-sensitive adhesive layer, a first polyimide layer and a second polyimide layer stacked sequentially.

[0112] In this application, the term "at least one of A and B" merely describes the relationship between related objects, indicating that three relationships can exist. For example, "at least one of A and B" can represent: A existing alone, A and B existing simultaneously, and B existing alone. Similarly, "at least one of A, B, and C" indicates that seven relationships can exist, representing: A existing alone, B existing alone, C existing alone, A and B existing simultaneously, A and C existing simultaneously, C and B existing simultaneously, and A, B, and C existing simultaneously. Likewise, "at least one of A, B, C, and D" indicates that fifteen relationships can exist, representing: A existing alone, B existing alone, C existing alone, D existing alone, A and B existing simultaneously, A and C existing simultaneously, A and D existing simultaneously, C and B existing simultaneously, D and B existing simultaneously, C and D existing simultaneously, A, B, and C existing simultaneously, A, B, and D existing simultaneously, A, C, and D existing simultaneously, and A, B, C, and D existing simultaneously.

[0113] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0114] In this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0115] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized in that, include: Substrate; The display structure layer is located on the substrate and includes multiple light-emitting layers; A light conversion structure layer is located on the side of the display structure layer away from the substrate, and includes a dam pattern and multiple light conversion layers. The dam pattern includes multiple first openings. The orthographic projections of the multiple light conversion layers on the substrate overlap with the orthographic projections of the multiple first openings on the substrate, and the orthographic projections of the first openings on the substrate overlap with the orthographic projections of the light-emitting layer on the substrate. A color filter structure layer is located on the side of the display structure layer away from the substrate, and includes a first light-transmitting protective layer, a light-shielding pattern, and a color filter layer. The first light-transmitting protective layer is located on the side of the light conversion structure layer away from the substrate. The dam pattern and the orthographic projection of the light conversion layer on the substrate are located within the orthographic projection of the first light-transmitting protective layer on the substrate. The light-shielding pattern is located on the side of the first light-transmitting protective layer away from the substrate. The color filter layer is located on the side of the light-shielding pattern away from the substrate. The light-shielding pattern includes a plurality of second openings, and the orthographic projections of the second openings on the substrate overlap with the orthographic projections of the first openings on the substrate.

2. The display panel according to claim 1, characterized in that, The orthographic projection of the second opening on the substrate lies within the orthographic projection of the first opening on the substrate.

3. The display panel according to claim 2, characterized in that, The size of the first opening in a first direction is less than or equal to 1.5 times the size of the second opening, and the first direction is a direction parallel to the substrate.

4. The display panel according to claim 3, characterized in that, The color filter layer includes multiple color resist layers, and the orthographic projection of the second opening on the substrate is located within the orthographic projection of the color resist layer on the substrate.

5. The display panel according to claim 4, characterized in that, The size of the second opening in the first direction is greater than or equal to 1 / 2 of the size of the color resist layer in the first direction.

6. The display panel according to claim 2, characterized in that, The orthographic projection of the light-emitting layer on the substrate is located within the orthographic projection of the first opening on the substrate, and the dimension of the light-emitting layer in the first direction is greater than or equal to 1 / 2 of the dimension of the first opening in the first direction, wherein the first direction is a direction parallel to the substrate.

7. The display panel according to claim 2, characterized in that, The color filter layer includes multiple color resist layers, and the orthographic projection of the first opening on the substrate is located within the orthographic projection of the color resist layer on the substrate.

8. The display panel according to claim 1, characterized in that, The color filter structure layer further includes a light-transmitting cover layer, which is located between the light-shielding pattern and the color filter layer, and the orthographic projection of the second opening on the substrate is located within the orthographic projection of the light-transmitting cover layer on the substrate.

9. The display panel according to claim 8, characterized in that, The refractive index of the light-transmitting covering layer is less than that of the first light-transmitting protective layer.

10. The display panel according to claim 9, characterized in that, The light-transparent covering layer includes a light-transparent substrate and a plurality of light-transparent hollow particles located in the light-transparent substrate.

11. The display panel according to claim 8, characterized in that, The color filter structure layer further includes a first light transmission adjustment layer, which is located between the light transmission cover layer and the light-shielding pattern. The orthographic projection of the second opening on the substrate is located within the orthographic projection of the first light transmission adjustment layer on the substrate. The refractive index of the first light transmission adjustment layer is less than the refractive index of the first light transmission protective layer.

12. The display panel according to claim 8, characterized in that, The color filter structure layer also includes a third light transmission adjustment pattern, which is located between the first light transmission protective layer and the light transmission cover layer; The third light-transmitting adjustment pattern includes multiple light-transmitting adjustment sheets. The orthographic projections of the multiple light-transmitting adjustment sheets on the substrate overlap with the orthographic projections of the multiple second openings on the substrate. The refractive index of the light-transmitting adjustment sheets is less than the refractive index of the first light-transmitting protective layer.

13. The display panel according to claim 1, characterized in that, The color filter structure layer further includes a second light transmission adjustment layer, which is located on the side of the first light transmission protection layer near the substrate. The orthographic projection of the second opening on the substrate is located within the orthographic projection of the second light transmission adjustment layer on the substrate. The refractive index of the second light transmission adjustment layer is less than the refractive index of the light conversion layer.

14. The display panel according to claim 1, characterized in that, The thickness of the light conversion layer in the second direction is greater than or equal to the thickness of the dam pattern in the second direction, and less than or equal to 1.3 times the thickness of the dam pattern in the second direction, wherein the second direction is perpendicular to the substrate.

15. The display panel according to claim 14, characterized in that, The target thickness is greater than or equal to the thickness of the light conversion layer in the second direction, and less than or equal to 1.2 times the thickness of the light conversion layer in the second direction. The target thickness is the sum of the thicknesses of the dam pattern, the first light-transmitting protective layer, and the light-shielding pattern in the second direction.

16. A display device, characterized in that, The display device includes a housing and a display panel as described in any one of claims 1 to 15.

Images