A display panel and display device

Abstract

This application provides a display panel and a display device. The display panel includes a substrate, a driving structure, a light-emitting device, a pixel defining layer, and a filter structure. The driving structure includes a first driving structure, and the light-emitting device includes a first light-emitting device, which is electrically connected to the first driving structure. The pixel defining layer includes a first pixel opening, and the filter structure includes a first filter structure. The orthographic projection of the first filter structure onto the substrate overlaps with the orthographic projection of the first pixel opening onto the substrate. The first filter structure includes a first portion and a second portion, which are arranged along a direction perpendicular to the surface of the display panel, with the first portion located on the side of the second portion away from the substrate. The color of the first portion is the same as the color emitted by the first light-emitting device, and the color of the first portion is different from the color of the second portion. This application helps to reduce reflection while lowering the fabrication difficulty.

Description

Technical Field

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

[0002] The reflection of ambient light by certain structures within a display panel is a significant factor affecting display quality. To improve display performance, a common approach is to fill the display panel with light-blocking materials to obscure certain structures and reduce reflection. Black light-blocking materials are a standard choice for this purpose; however, using black light-blocking materials to reduce reflection often presents challenges in manufacturing and has certain limitations. Summary of the Invention

[0003] In view of this, this application provides a display panel to help solve the above problems.

[0004] In a first aspect, embodiments of this application provide a display panel, including a substrate, a driving structure, a light-emitting device, a pixel defining layer, and a filter structure. The driving structure is located on one side of the substrate and includes a first driving structure. The light-emitting device is located on the side of the driving structure away from the substrate, and a plurality of light-emitting devices include a first light-emitting device. The pixel defining layer includes a pixel opening that exposes at least a portion of the driving structure, and the orthographic projection of the pixel opening onto the substrate covers the orthographic projection of the light-emitting device onto the substrate. A plurality of pixel openings includes a first pixel opening, and the first light-emitting device is electrically connected to the first driving structure. The orthographic projection of the filter structure onto the substrate overlaps with the orthographic projection of the pixel opening onto the substrate. A plurality of filter structures includes a first filter structure, and the orthographic projection of the first filter structure onto the substrate overlaps with the orthographic projection of the first pixel opening onto the substrate. The first filter structure includes a first portion and a second portion, which are arranged along a direction perpendicular to the surface of the display panel, and the first portion is located on the side of the second portion away from the substrate. The color of the first portion is the same as the emission color of the first light-emitting device, and the color of the first portion is different from the color of the second portion.

[0005] In one possible implementation, the pixel-defining layer comprises a black material.

[0006] In one possible implementation, the pixel defining layer also includes a light-transmitting opening along a direction perpendicular to the surface of the display panel, and the light-transmitting opening does not overlap with the driving structure.

[0007] In one possible implementation, the first projection covers the orthographic projection of the pixel opening onto the substrate, and the first projection includes the orthographic projection of the filter structure onto the substrate and the orthographic projection of the light-emitting device onto the substrate.

[0008] In one possible implementation, the second part is blue or red.

[0009] In one possible implementation, a second driving structure is included among multiple driving structures, a second light-emitting device is included among multiple light-emitting devices, and a second pixel opening is included among multiple pixel openings. The second light-emitting device is electrically connected to the second driving structure. The emission color of the second light-emitting device is different from the emission color of the first light-emitting device. A second filter structure is included among multiple filter structures, and the orthographic projection of the second filter structure on the substrate overlaps with the orthographic projection of the second pixel opening on the substrate. The second filter structure includes a third part and a fourth part, which are arranged along a direction perpendicular to the surface of the display panel, and the third part is located on the side of the fourth part away from the substrate. The color of the third part is the same as the emission color of the second light-emitting device, and the color of the third part is different from the color of the fourth part.

[0010] The fourth part has the same color as the second part.

[0011] In one possible implementation, the multiple driving structures include a third driving structure, the multiple light-emitting devices include a third light-emitting device, and the multiple pixel openings include a third pixel opening. The third light-emitting device is electrically connected to the third driving structure. The emission color of the third light-emitting device is different from the emission color of the first light-emitting device and the emission color of the second light-emitting device.

[0012] The multiple filter structures include a third filter structure. The orthographic projection of the third filter structure on the substrate overlaps with the orthographic projection of the third pixel opening on the substrate. The color of the third filter structure is the same as the color of the light emitted by the third light-emitting device.

[0013] The color of the third filter structure is the same as the color of the second part and the color of the fourth part.

[0014] In one possible implementation, the plurality of driving structures includes a redundant driving structure, to which the light-emitting device is not electrically connected. The pixel defining layer also includes a plurality of redundant openings that expose at least a portion of the redundant driving structure. The plurality of filter structures includes a redundant filter structure, the orthographic projection of which overlaps with the orthographic projection of which overlaps with the orthographic projection of which overlaps with the redundant opening. The color of the redundant filter structure corresponding to the redundant opening is the same as at least a portion of the color of the filter structure corresponding to the pixel opening adjacent to that redundant opening.

[0015] In one possible implementation, the multiple driving structures include redundant driving structures, and the light-emitting device is not electrically connected to the redundant driving structures. The pixel defining layer also includes multiple redundant openings that expose at least a portion of the redundant driving structures. The multiple filter structures include redundant filter structures, and the orthographic projection of the redundant filter structures onto the substrate overlaps with the orthographic projection of the redundant openings onto the substrate. All redundant filter structures have the same color.

[0016] In one possible implementation, the redundant filter structure is blue.

[0017] In one possible implementation, along the direction perpendicular to the surface of the display panel, the projected area of ​​the filter structure corresponding to the light-emitting device whose emission color is different from that of the redundant filter structure is s1, and the projected area of ​​the filter structure corresponding to the light-emitting device whose emission color is the same as that of the redundant filter structure is s2, where s1 > s2.

[0018] Secondly, embodiments of this application provide a display device, including a display panel as provided in the first aspect.

[0019] In this application, the filter structure including color resist material can block the light-emitting device and the driving structure. Since the patterning of the color resist material included in the filter structure is relatively easy, this arrangement helps to reduce the manufacturing difficulty while reducing reflection. Furthermore, by arranging the first filter structure and the first pixel opening to overlap in a direction perpendicular to the surface of the display panel, the first filter structure can block the first driving structure exposed by the first pixel opening, reducing the intensity of ambient light incident on the portion of the first driving structure exposed by the first pixel opening. Since the color of the first portion is different from the color of the second portion, the first filter structure has good absorption capacity for ambient light passing through it, further helping to reduce the reflection of ambient light. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional schematic diagram of a partial structure of a display panel related to this application;

[0022] Figure 2 This application provides a cross-sectional schematic diagram of a partial structure of a display panel;

[0023] Figure 3 for Figure 2 The diagram shows a top view of part of the structure of the display panel.

[0024] Figure 4 This application provides a cross-sectional schematic diagram of a partial structure of a display panel;

[0025] Figure 5 This application provides a cross-sectional schematic diagram of a partial structure of a display panel;

[0026] Figure 6 This application provides a cross-sectional schematic diagram of a partial structure of a display panel;

[0027] Figure 7 This application provides a cross-sectional schematic diagram of a partial structure of a display panel;

[0028] Figure 8 for Figure 7 The diagram shows a top view of part of the structure of the display panel.

[0029] Figure 9 This application provides a cross-sectional schematic diagram of a partial structure of a display panel;

[0030] Figure 10 This application provides a cross-sectional schematic diagram of a partial structure of a display panel;

[0031] Figure 11 This application provides a cross-sectional schematic diagram of a partial structure of a display panel;

[0032] Figure 12 for Figure 11 The diagram shows a top view of part of the structure of the display panel.

[0033] Figure 13 This is a schematic diagram of a display device provided in this application. Detailed Implementation

[0034] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0035] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0036] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0037] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0038] Figure 1 This is a cross-sectional schematic diagram of a partial structure of a display panel related to this application.

[0039] There are currently several technical solutions to reduce the reflection of ambient light by display panels.

[0040] For example, the light-emitting devices in a display panel often include structures that can reflect ambient light. Therefore, reducing the size of these devices can decrease the probability of ambient light reaching them, thus reducing reflection. This technique is commonly used in display panels that include micro-LEDs. However, reducing the size of these devices often lowers their luminous efficiency, leading to decreased display brightness and hindering the improvement of image contrast.

[0041] For example, to reduce ambient light reflection, a light filter structure can be attached to the light-emitting side of the display panel. As ambient light passes through the light filter structure and enters the display panel, a portion of the ambient light can be absorbed by the light filter structure. However, the installation of this light filter structure will reduce the light transmittance of the display panel and reduce the light intensity of the display light generated by the display panel for display purposes.

[0042] Commonly used technical solutions in the prior art include filling with light-shielding materials to block structures in the display panel that can reflect ambient light. For example... Figure 1As shown, the display panel is filled with a light-shielding structure M'. The light-shielding structure M' typically has good absorption capabilities for ambient light. This arrangement reduces the intensity of ambient light propagating to a portion of the surface of the light-emitting device L' and a portion of the conductive structure R', thus helping to reduce reflection. The light-shielding structure M' may include a black material. However, the distance between the surface of the light-emitting device L' furthest from the conductive structure R' and the conductive structure R' is often relatively large. Therefore, the thickness of the sub-part Ma surrounding the light-emitting device L' within the light-shielding structure M' along the direction perpendicular to the surface of the display panel is often significant. Because the light-shielding structure M' has good light absorption capabilities, fabricating the sub-part Ma during the manufacturing process is challenging. This is because current methods typically involve exposure, development, and etching to pattern the light-shielding layer to obtain the light-shielding structure M'. Due to the strong light absorption capability of the light-shielding structure M', if the thickness of the sub-part Ma is large, insufficient exposure of the light-shielding layer around the light-emitting device L' during exposure can lead to a low yield of the light-shielding structure M'.

[0043] Figure 2 This is a cross-sectional schematic diagram of a partial structure of a display panel provided in this application.

[0044] To address the aforementioned problems, this application provides a display panel 10, such as... Figure 2 As shown, the display panel 10 includes a substrate B, a driving structure D, and a light-emitting device L. The light-emitting device L can be a micro-LED, a miniature LED, or similar type. The driving structure D is located on one side of the substrate B, and a first driving structure D1 is included among the multiple driving structures D. The light-emitting device L is located on the side of the driving structure D away from the substrate B, and a first light-emitting device L1 is included among the multiple light-emitting devices L, which is electrically connected to the first driving structure D1. The driving structure D can include two parts: one part can be electrically connected to one electrode (e.g., the anode) of the light-emitting device L via a contact structure bump, and the other part can be electrically connected to the other electrode (e.g., the cathode) of the light-emitting device L via a contact structure bump. A portion of the driving structure D can be electrically connected to one electrode of the light-emitting device L and the pixel circuit in the display panel 10, and the other portion of the driving structure D can be electrically connected to the other electrode of the light-emitting device L and a portion of the signal lines in the display panel 10. Therefore, the light-emitting device L can receive the voltage or current required for emitting light through the driving structure D.

[0045] Figure 3 for Figure 2 The diagram shown is a top view of part of the display panel structure. It should be noted that... Figure 3 The text only indicates Figure 2 The image shows a partial structure of the display panel projected onto the substrate.

[0046] Combination Figure 2 and Figure 3 The display panel 10 also includes a pixel defining layer PDL, which includes pixel openings OP. The pixel openings OP expose at least a portion of the driving structure D, and the orthographic projection SO of the pixel openings OP on the substrate B overlaps with the orthographic projection SL of the light-emitting device L on the substrate B. The area of ​​the orthographic projection SL of the light-emitting device L on the substrate B may be smaller than the area of ​​the orthographic projection SO of the pixel openings OP on the substrate B. Therefore, along a direction perpendicular to the surface of the display panel 10, a portion of the driving structure D may not overlap with either the pixel defining layer PDL or the light-emitting device L. Among the plurality of pixel openings OP, a first pixel opening OP1 is included. The orthographic projection SO1 of the first pixel opening OP1 on the substrate B may cover the orthographic projection SL1 of the first light-emitting device L1 on the substrate B.

[0047] Combination Figure 2 and Figure 3 The display panel 10 also includes a filter structure CF, the orthographic projection SC of the filter structure CF on the substrate B overlapping the orthographic projection SO of the pixel opening OP on the substrate B. The filter structure CF may include a color resist material for absorbing light. When ambient light incident on the display panel 10 propagates into the filter structure CF, the filter structure CF can absorb at least a portion of the colors included in the ambient light, thereby reducing the intensity of the ambient light.

[0048] It should be noted that the accompanying drawings in this specification use different filling patterns for the filter structures CF of different colors. That is, different filling patterns for different filter structures CF mean that the corresponding colors of the different filter structures CF are different, and the same filling pattern for different filter structures CF means that the corresponding colors of the different filter structures CF are the same. In addition, for some filter structures CF, different filling patterns for different parts of the same filter structure CF mean that the corresponding colors of the different parts are different, and the same filling pattern for different parts of the same filter structure CF means that the corresponding colors of the different parts are the same.

[0049] The plurality of filter structures CF include a first filter structure CF1, and the orthographic projection SC1 of the first filter structure CF1 on the substrate B overlaps with the orthographic projection SO1 of the first pixel opening OP1 on the substrate B. Therefore, along the direction perpendicular to the surface of the display panel 10, the first filter structure CF1 can overlap with the portion of the first driving structure D1 exposed by the first pixel opening OP1.

[0050] The first filter structure CF1 includes a first portion CF11 and a second portion CF12. The first portion CF11 and the second portion CF12 are arranged along a direction perpendicular to the surface of the display panel 10, and the first portion CF11 is located on the side of the second portion CF12 away from the substrate B. Both the first portion CF11 and the second portion CF12 may include color resist material. The first portion CF11 may surround at least a portion of the surface of the first light-emitting device L1, thereby reducing ambient light propagating to a portion of the surface of the first light-emitting device L1 and weakening reflection.

[0051] In this configuration, the first portion CF11 has the same color as the light emitted by the first light-emitting device L1, but its color differs from that of the second portion CF12. Since the first portion CF11 can surround a portion of the surface of the first light-emitting device L1, if its color differs from the light emitted by the first light-emitting device L1, then the first portion CF11 will have a stronger absorption capacity for the light emitted by the first light-emitting device L1. Compared to the case where the first portion CF11 has the same color as the light emitted by the first light-emitting device L1, this arrangement tends to result in a relatively small proportion of the light emitted by the first light-emitting device L1 that can be emitted through the display panel 10. Therefore, the first portion CF11 can be configured to have the same color as the light emitted by the first light-emitting device L1, thereby reducing the degree of absorption of the light emitted by the first light-emitting device L1 by the first portion CF11. Furthermore, since the color of the first part CF11 is different from the color of the second part CF12, most of the ambient light can be absorbed by the first filter structure CF1 as it passes through both parts. This arrangement helps to reduce the intensity of the ambient light emanating from the first filter structure CF1 and weaken reflection. For example, when the colors of the first part CF11 and the second part CF12 combine to form black, the first filter structure CF1 can completely absorb the ambient light entering it.

[0052] Furthermore, since the first portion CF11 and the second portion CF12 are arranged along a direction perpendicular to the surface of the display panel 10, small-angle ambient light directed towards the first pixel opening OP1 at a small angle between the direction and the direction perpendicular to the surface of the display panel 10 is more likely to enter the first portion CF11 and the second portion CF12 sequentially. Also, because the color of the first portion CF11 is different from the color of the second portion CF12, it is more difficult for the aforementioned small-angle ambient light to exit through the second portion CF12, which helps to reduce reflection.

[0053] In this embodiment, since the color resist material included in the filter structure CF typically has a weaker light absorption capacity than the black material, the fabrication of the filter structure CF is less difficult than that of the aforementioned light-shielding structure M', which helps to reduce the fabrication difficulty while achieving the goal of reducing reflection. Furthermore, by setting the first filter structure CF1 and the first pixel opening OP1 to overlap in a direction perpendicular to the surface of the display panel 10, the first filter structure CF1 can block the portion of the first driving structure D1 exposed by the first pixel opening OP1. This helps allow ambient light to pass through the first filter structure before propagating to the first driving structure D1, thereby reducing the intensity of ambient light propagating to the first driving structure D1.

[0054] Figure 4 This is a cross-sectional schematic diagram of a partial structure of a display panel provided in this application.

[0055] In one possible implementation, such as Figure 4 As shown, the first portion CF11 may not surround the surface of the first light-emitting device L1 facing the light-emitting surface of the display panel 10. This arrangement can reduce the probability that light emitted from the surface of the first light-emitting device L1 facing the light-emitting surface of the display panel 10 will propagate to the first portion CF11, which helps to reduce the proportion of light generated by the first light-emitting device L1 that is absorbed by the first portion CF11 in the light generated by the first light-emitting device L1.

[0056] In one embodiment of this application, the pixel delimiting layer (PDL) comprises a black material.

[0057] In the embodiments of this application, such as Figure 2 As shown, along a direction perpendicular to the surface of the display panel 10, the pixel defining layer PDL can partially overlap with the first driving structure D1, and the film layer containing the pixel defining layer PDL can be located on the side of the film layer containing the first driving structure D1 closer to the film layer containing the first light-emitting device L1. Therefore, during the propagation of ambient light to the portion of the first driving structure D1 that overlaps with the pixel defining layer PDL, it can first enter the pixel defining layer PDL. At this time, if the pixel defining layer PDL includes black material, the ambient light will be absorbed by the pixel defining layer PDL.

[0058] Figure 5 This is a cross-sectional schematic diagram of a partial structure of a display panel provided in this application.

[0059] In one embodiment of this application, such as Figure 5 As shown, the pixel definition layer (PDL) also includes a light-transmitting opening gap. Along the direction perpendicular to the surface of the display panel 10, the light-transmitting opening gap does not overlap with the driving structure D.

[0060] In this embodiment, since the driving structure D does not overlap with the light-transmitting opening gap, the light transmittance of the area in the display panel 10 that overlaps with the light-transmitting opening gap can be relatively high along the direction perpendicular to the surface of the display panel 10. Typically, this configuration is suitable for display panels capable of transparent displays, such as display panels included in transparent screens.

[0061] In one embodiment of this application, combined with Figure 2 and Figure 3 The first projection SN covers the orthogonal projection SO of the pixel opening OP on the substrate B. The first projection SN includes the orthogonal projection SC of the filter structure CF on the substrate B and the orthogonal projection SL of the light-emitting device L on the substrate B.

[0062] In this embodiment, since the first projection SN covers the orthographic projection SO of the pixel opening OP, and the filter structure CF can surround the surface of the light-emitting device L, the propagation process of small-angle ambient light towards the pixel opening OP includes a first case and a second case. The first case refers to the small-angle ambient light being blocked by the light-emitting device L after entering the filter structure CF, and the second case refers to the light passing through the filter structure CF to reach the pixel opening OP. In the first case, small-angle ambient light is difficult to propagate to the pixel opening OP; in the second case, some of the color light of the small-angle ambient light is absorbed by the filter structure CF during the process of passing through it. Small-angle ambient light can refer to ambient light propagating along a direction that forms a small angle with the direction perpendicular to the surface of the display panel 10.

[0063] In one embodiment of this application, the second portion CF12 is blue or red.

[0064] In this embodiment, to ensure high light transmittance of the display panel 10, a transparent material is typically filled into the display panel 10. However, multiple experiments have confirmed that some transparent materials have low transmittance for light in the 400nm wavelength band, resulting in low propagation efficiency of blue light in the display panel 10. This, in turn, leads to a yellowing phenomenon in the displayed image caused by the lack of blue light. To mitigate this yellowing phenomenon, the second part CF12 can be set to blue to compensate for the lack of blue light in the displayed image and improve the display effect.

[0065] Furthermore, to reduce the difference in luminous efficiency between light-emitting devices L of different emitting colors, a roughening process is usually required when manufacturing a red light-emitting device L. However, this roughening process tends to result in a rougher surface for the red light-emitting device L. During the fabrication of the display panel 10, because the surface of the red light-emitting device L is rougher, it is easier for material constituting the second part CF12 to remain on its surface compared to light-emitting devices L of other colors. Therefore, setting the second part CF12 to red can reduce the degree of absorption of light emitted by the light-emitting device L by the material remaining on its surface.

[0066] Figure 6 This is a cross-sectional schematic diagram of a partial structure of a display panel provided in this application.

[0067] In one embodiment of this application, such as Figure 6 As shown, the multiple driving structures D include a second driving structure D2, the multiple light-emitting devices L include a second light-emitting device L2, the multiple pixel openings OP include a second pixel opening OP2, the second light-emitting device L2 is electrically connected to the second driving structure D2, and the second light-emitting device L2 can be electrically connected to the pixel circuit through the second driving structure D2.

[0068] The color of light emitted by the second light-emitting device L2 is different from the color of light emitted by the first light-emitting device L1.

[0069] The plurality of filter structures CF include a second filter structure CF2, the orthographic projection of the second filter structure CF2 on the substrate B overlaps with the orthographic projection of the second pixel opening OP2 on the substrate B. Therefore, along the direction perpendicular to the surface of the display panel 10, the second filter structure CF2 can overlap with the portion of the second driving structure D2 exposed by the second pixel opening OP2.

[0070] The second filter structure CF2 includes a third part CF21 and a fourth part CF22. The third part CF21 and the fourth part CF22 are arranged in a direction perpendicular to the surface of the display panel 10, and the third part CF21 is located on the side of the fourth part CF22 away from the substrate B. Both the third part CF21 and the fourth part CF22 may include color resist material. The third part CF21 may surround at least a portion of the surface of the second light-emitting device L2, thereby reducing ambient light propagating to a portion of the surface of the second light-emitting device L2 and weakening reflection.

[0071] The third part CF21 has the same color as the light emitted by the second light-emitting device L2, but its color differs from that of the fourth part CF22. Since the third part CF21 can surround a portion of the surface of the second light-emitting device L2, if its color differs from the light emitted by L2, it will absorb more light from L2. Compared to the case where the third part CF21 has the same color as L2, this arrangement tends to result in a relatively small proportion of the light emitted by L2 that can be emitted from the display panel 10. Therefore, setting the third part CF21 to have the same color as L2 reduces the absorption of light emitted by L2. Furthermore, since the third part CF21 has a different color from CF22, the second filter structure CF2 absorbs ambient light more efficiently as it passes through both CF21 and CF22. This arrangement helps reduce the intensity of ambient light emitted from the second filter structure CF2 and weakens reflection. For example, when the color of the third part CF21 is superimposed with the color of the fourth part CF22 to form black, the second filter structure CF2 can completely absorb the ambient light incident upon it.

[0072] Furthermore, since the third part CF21 and the fourth part CF22 are arranged along a direction perpendicular to the surface of the display panel 10, small-angle ambient light propagating towards the second pixel opening OP2 can easily enter the third part CF21 and the fourth part CF22 sequentially. Also, because the color of the third part CF21 is different from the color of the fourth part CF22, it is more difficult for the aforementioned small-angle ambient light to exit through the fourth part CF22, which helps to reduce reflection.

[0073] The color of the fourth part CF22 is the same as the color of the second part CF12.

[0074] In this embodiment, since the fourth part CF22 and the second part CF12 have the same color, the color resist material included in the fourth part CF22 can be the same as that included in the second part CF12. The fourth part CF22 and the second part CF12 can be located in the same film layer. In this case, if the color resist material included in the fourth part CF22 is the same as that included in the second part CF12, the fourth part CF22 and the second part CF12 can be prepared in the same preparation step, which helps to reduce the preparation difficulty.

[0075] In one possible implementation, the color of the fourth part CF22 and the color of the second part CF12 can both be blue or red.

[0076] In one embodiment of this application, such as Figure 6 As shown, the multiple driving structures D include a third driving structure D3, the multiple light-emitting devices L include a third light-emitting device L3, the multiple pixel openings OP include a third pixel opening OP3, and the third light-emitting device L3 is electrically connected to the third driving structure D3.

[0077] The emission color of the third light-emitting device L3 is different from the emission color of the first light-emitting device L1 and the emission color of the second light-emitting device L2.

[0078] The multiple filter structures CF include a third filter structure CF3, whose orthographic projection on the substrate B overlaps with the orthographic projection of the third pixel opening OP3 on the substrate B. Therefore, along the direction perpendicular to the surface of the display panel 10, the third filter structure CF3 can overlap with the portion of the third driving structure D3 exposed by the third pixel opening OP3.

[0079] The third filter structure CF3 may include a color resist material. The third filter structure CF3 may surround at least part of the surface of the third light-emitting device L3. The third filter structure CF3 may reduce the ambient light propagating to part of the surface of the third light-emitting device L3 and reduce the reflection phenomenon.

[0080] The color of the third filter structure CF3 is the same as the color of the light emitted by the third light-emitting device L3. Therefore, the third filter structure CF3 absorbs less light emitted by the third light-emitting device L3.

[0081] The color of the third filter structure CF3 is the same as the color of the second part CF12 and the color of the fourth part CF22.

[0082] In the embodiments of this application, the color of the third filter structure CF3 is the same as the color of the second part CF12 and the fourth part CF22. Therefore, the color resist material included in the third filter structure CF3 can be the same as the color resist material included in the second part CF12 and the color resist material included in the fourth part CF22, which helps to reduce the difficulty of preparation.

[0083] In one possible implementation, the emission color of the third light-emitting device L3 can be red, and the colors of the third filter structure CF3, the second part CF12, and the fourth part CF22 can all be red. In this implementation, when the emission color of the third light-emitting device L3 and the color of the third filter structure CF3 are both red, the material remaining on the surface of the third light-emitting device L3 can also be red, which can reduce the degree of absorption of the light emitted by the third light-emitting device L3 by the material remaining on the surface of the third light-emitting device L3.

[0084] In one possible implementation, the emission color of the third light-emitting device L3 can be blue, and the colors of the third filter structure CF3, the second part CF12, and the fourth part CF22 can all be blue. In this implementation, setting the third filter structure CF3, the second part CF12, and the fourth part CF22 to blue helps to increase the proportion of blue in the displayed image and reduce the yellowing phenomenon.

[0085] Figure 7 This is a cross-sectional schematic diagram of a partial structure of a display panel provided in this application. Figure 8 for Figure 7 The diagram shown is a top view of part of the display panel structure. It should be noted that... Figure 8 The text only indicates Figure 7 The image shows a partial structure of the display panel projected onto the substrate.

[0086] In one embodiment of this application, such as Figure 7 As shown, the multiple driving structures D include a redundant driving structure D4, and the light-emitting device L is not electrically connected to the redundant driving structure D4.

[0087] During the fabrication of the display panel 10, some light-emitting devices L may become damaged. In order not to affect the display effect, the damaged light-emitting devices L are often removed. At this time, the driving structure D that originally corresponded to the removed light-emitting device L is a redundant driving structure D4, and there is no light-emitting device L in the display panel 10 that is electrically connected to the redundant driving structure D4.

[0088] The pixel-defining layer (PDL) also includes multiple redundant openings (OP4) that expose at least a portion of the redundant drive structure (D4).

[0089] The multiple filter structures CF include a redundant filter structure CF4, combined with Figure 7 and Figure 8 The orthographic projection SCa of the redundant filter structure CF4 on the substrate B overlaps with the orthographic projection SOa of the redundant opening OP4 on the substrate B. Therefore, along the direction perpendicular to the surface of the display panel 10, the redundant filter structure CF4 can overlap with the portion of the redundant driving structure D4 exposed by the redundant opening OP4. Since the redundant filter structure CF4 may include color resist material, the intensity of ambient light propagating through the redundant filter structure CF4 to the redundant opening OP4 can be reduced.

[0090] In one possible implementation, such as Figure 8 As shown, the orthographic projection SCa of the redundant filter structure CF4 on the substrate B can cover the orthographic projection SOa of the redundant opening OP4 on the substrate B.

[0091] Figure 9This is a cross-sectional schematic diagram of a partial structure of a display panel provided in this application.

[0092] Among them, such as Figure 9 As shown, the color of the redundant filter structure CF4 corresponding to the redundant aperture OP4 is at least part of the color of the filter structure CF corresponding to the pixel aperture OP adjacent to the redundant aperture OP4.

[0093] Since the color of the redundant filter structure CF4 corresponding to the redundant aperture OP4 can be at least partially the same as the color of the filter structure CF corresponding to the adjacent pixel aperture OP, the color resist material included in the redundant filter structure CF4 can be the same as at least partially the color resist material included in the filter structure CF corresponding to the adjacent pixel aperture OP. Because portions of the redundant filter structure CF4 and the filter structure CF corresponding to the adjacent pixel aperture OP can be located in the same film layer, the redundant filter structure CF4 and the filter structure CF corresponding to the adjacent pixel aperture OP can be fabricated in the same fabrication step, which helps to reduce the fabrication difficulty.

[0094] like Figure 9 As shown, the redundant filter structures CF4 corresponding to the multiple redundant apertures OP4 may include a first redundant filter structure CF4a, a second redundant filter structure CF4b, and a third redundant filter structure CF4c. Among the filter structures CFs adjacent to the first redundant filter structure CF4a, the distance between the first filter structure CF1 and the first redundant filter structure CF4a is small, and the color of the first portion CF11 of the first filter structure CF1 can be the same as the color of the first redundant filter structure CF4a. Among the filter structures CFs adjacent to the second redundant filter structure CF4b, the distance between the second filter structure CF2 and the second redundant filter structure CF4b is small, and the color of the third portion CF21 of the second filter structure CF2 can be the same as the color of the second redundant filter structure CF4b. Among the filter structures CFs adjacent to the third redundant filter structure CF4c, the distance between the third filter structure CF3 and the third redundant filter structure CF4c is small, and the color of the third filter structure CF3 can be the same as the color of the third redundant filter structure CF4c.

[0095] Typically, there can be a filter structure CF corresponding to a redundant filter structure CF4, with a small distance between them. For example, the first filter structure CF1 can correspond to the first redundant filter structure CF4a; the second filter structure CF2 can correspond to the second redundant filter structure CF4b; and the third filter structure CF3 can correspond to the third redundant filter structure CF4c. In this case, the color of the redundant filter structure CF4 is at least partially the same as the color of the corresponding filter structure CF, which helps to ensure the regularity of the color setting of the redundant filter structure CF4 and improves the display effect.

[0096] Figure 10 This is a cross-sectional schematic diagram of a partial structure of a display panel provided in this application.

[0097] In one possible implementation, such as Figure 10 As shown, the redundant filter structure CF4 includes a fifth part CF31 and a sixth part CF32. The fifth part CF31 and the sixth part CF32 are arranged along a direction perpendicular to the surface of the display panel 10, and the fifth part CF31 is located on the side of the sixth part CF32 away from the redundant driving structure D4. The sixth part CF32 corresponding to the multiple redundant filter structures CF4 has the same color.

[0098] Figure 11 This is a cross-sectional schematic diagram of a partial structure of a display panel provided in this application.

[0099] In one embodiment of this application, combined with Figure 7 , Figure 8 and Figure 11 The multiple driving structures D include a redundant driving structure D4, and the light-emitting device L is not electrically connected to the redundant driving structure D4.

[0100] The pixel-defining layer (PDL) also includes multiple redundant openings (OP4) that expose at least a portion of the redundant drive structure (D4).

[0101] The multiple filter structures CF include a redundant filter structure CF4, and the orthographic projection SCa of the redundant filter structure CF4 on the substrate B overlaps with the orthographic projection SOa of the redundant opening OP4 on the substrate B.

[0102] All redundant filter structures CF4 have the same color.

[0103] In the embodiments of this application, all redundant filter structures CF4 have the same color, which means that all redundant filter structures CF4 can include the same color resist material, which helps to reduce the difficulty of preparation.

[0104] In one embodiment of this application, all redundant filter structures CF4 are blue.

[0105] In this embodiment, all redundant filter structures CF4 may include blue color resist material. Therefore, compared with the areas in the display panel 10 that include other colors of color resist material, the area of ​​the area including blue color resist material can be larger. Correspondingly, the proportion of blue in the displayed image is larger. This setting helps to reduce the yellowing phenomenon.

[0106] Figure 12 for Figure 11 The diagram shown is a top view of part of the display panel structure. It should be noted that... Figure 12The text only indicates Figure 11 The image shows a partial structure of the display panel projected onto the substrate.

[0107] In one embodiment of this application, combined with Figure 11 and Figure 12 Along the direction perpendicular to the surface of the display panel 10, the projected area of ​​the filter structure CF corresponding to the light-emitting device L whose light emission color is different from that of the redundant filter structure CF4 is s1, and the projected area of ​​the filter structure CF corresponding to the light-emitting device L whose light emission color is the same as that of the redundant filter structure CF4 is s2, where s1 > s2.

[0108] The light-emitting device L corresponding to the first filter structure CF1 can emit a first color, the light-emitting device L corresponding to the second filter structure CF2 can emit a second color, and the light-emitting device L corresponding to the third filter structure CF3 can emit a third color. The first, second, and third colors can be different from each other. Therefore, the color of the first part CF11 (first color) of the first filter structure CF1, the color of the third part CF21 (second color) of the second filter structure CF2, and the color of the third filter structure CF3 (third color) can be different from each other.

[0109] It should be noted that the first, second, and third colors can be one of red, blue, and green, respectively.

[0110] Combination Figure 11 and Figure 12 The redundant filter structure CF4 can be a third color. Along the direction perpendicular to the surface of the display panel 10, the area of ​​the orthographic projection SC3a of the third filter structure CF3 can be s2. The area of ​​the orthographic projection SC1a of the first part CF11 of the first filter structure CF1 and the area of ​​the orthographic projection SC2a of the third part CF21 of the second filter structure CF2 can both be s1, where s1 > s2. In this case, the differences between the proportions of the first color, the second color, and the third color in the displayed image can be relatively small.

[0111] This embodiment increases the projected area of ​​the filter structure CF corresponding to the light-emitting device L whose color is different from that of the redundant filter structure CF4, so that s1>s2. This helps to reduce the difference in the proportion of different colors in the display screen and improve the display effect, provided that the colors of all redundant filter structures CF4 are the same.

[0112] Figure 13 This is a schematic diagram of a display device provided in this application.

[0113] This application provides a display device 20, such as... Figure 13As shown, the display device 20 includes the display panel 10 provided in the above embodiment. The display device 20 can be a mobile phone, or it can be an electronic device such as a computer or television.

[0114] The display device 20 provided in this application greatly suppresses the reflection of external light, and the manufacturing difficulty of the display device 20 is reduced.

[0115] The same or similar parts between the various embodiments in this specification can be referred to mutually. In particular, the device embodiments and terminal embodiments are basically similar to the method embodiments, so the description is relatively simple, and the relevant parts can be referred to the description in the method embodiments.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate; a plurality of driving structures located on one side of the substrate; a first driving structure included in the plurality of driving structures; a plurality of light emitting devices located on a side of the driving structures away from the substrate; a first light emitting device included in the plurality of light emitting devices; a pixel definition layer comprising a plurality of pixel openings; the pixel openings expose at least part of the driving structures, and a normal projection of the pixel openings on the substrate overlaps with a normal projection of the light emitting devices on the substrate; a first pixel opening included in the plurality of pixel openings, the first light emitting device being electrically connected to the first driving structure; a plurality of filter structures, a normal projection of the filter structures on the substrate overlapping with a normal projection of the pixel openings on the substrate; a first filter structure included in the plurality of filter structures, a normal projection of the first filter structure on the substrate overlapping with a normal projection of the first pixel opening on the substrate; the first filter structure comprises a first portion and a second portion, the first portion and the second portion being arranged in a direction perpendicular to a surface on which the display panel is located, and the first portion being located on a side of the second portion away from the substrate; wherein the color of the first portion is the same as the light emitting color of the first light emitting device, and the color of the first portion is different from the color of the second portion; a redundant driving structure included in the plurality of driving structures, the light emitting device not being electrically connected to the redundant driving structure; the pixel definition layer further comprises a plurality of redundant openings, the redundant openings exposing at least part of the redundant driving structures; a redundant filter structure included in the plurality of filter structures, a normal projection of the redundant filter structure on the substrate overlapping with a normal projection of the redundant openings on the substrate; wherein the color of the redundant filter structure corresponding to the redundant opening is the same as the color of at least part of the filter structure corresponding to the pixel opening adjacent to the redundant opening.

2. The display panel of claim 1, wherein, The pixel definition layer comprises a black material.

3. The display panel of claim 2, wherein, The pixel definition layer further comprises a light transmission opening, the light transmission opening having no overlap with the driving structure in a direction perpendicular to a surface on which the display panel is located.

4. The display panel of claim 1, wherein, A first projection covers a normal projection of the pixel openings on the substrate, the first projection comprising a normal projection of the filter structures on the substrate and a normal projection of the light emitting devices on the substrate.

5. The display panel of claim 1, wherein, The second portion is blue or red.

6. The display panel of claim 1 or 5, wherein, A second driving structure is included in the plurality of driving structures, a second light emitting device is included in the plurality of light emitting devices, and a second pixel opening is included in the plurality of pixel openings, the second light emitting device being electrically connected to the second driving structure; the light emitting color of the second light emitting device is different from the light emitting color of the first light emitting device; The second filter structure comprises a third portion and a fourth portion, the third portion and the fourth portion are arranged along a direction perpendicular to a surface on which the display panel is located, and the third portion is located on a side of the fourth portion away from the substrate substrate; the color of the third portion is the same as the light-emitting color of the second light-emitting device, and the color of the third portion is different from the color of the fourth portion; The color of the fourth portion is the same as the color of the second portion.

7. The display panel of claim 6, wherein, The third driving structure is included in a plurality of the driving structures, and the third light-emitting device is included in a plurality of the light-emitting devices; the third pixel opening is included in a plurality of the pixel openings, and the third light-emitting device is electrically connected to the third driving structure; The light-emitting color of the third light-emitting device is different from the light-emitting color of the first light-emitting device and the light-emitting color of the second light-emitting device; The third filter structure is included in a plurality of the filter structures, and the third filter structure overlaps the third pixel opening on the substrate substrate in the orthographic projection; the color of the third filter structure is the same as the light-emitting color of the third light-emitting device; The color of the third filter structure is the same as the color of the second portion and the color of the fourth portion.

8. The display panel of claim 1, wherein, The redundancy driving structure is included in a plurality of the driving structures, and the light-emitting device is not electrically connected to the redundancy driving structure; The pixel defining layer further comprises a plurality of redundancy openings, and the redundancy openings expose at least part of the redundancy driving structure; The redundancy filter structure is included in a plurality of the filter structures, and the redundancy filter structure overlaps the redundancy opening on the substrate substrate in the orthographic projection; The color of all the redundancy filter structures is the same.

9. The display panel of claim 8, wherein, The color of the redundancy filter structure is blue.

10. The display panel of claim 8, wherein, In a direction perpendicular to a surface on which the display panel is located, the orthographic projection area of the filter structure corresponding to the light-emitting device whose light-emitting color is different from the color of the redundancy filter structure is s1, and the orthographic projection area of the filter structure corresponding to the light-emitting device whose light-emitting color is the same as the color of the redundancy filter structure is s2, s1>s2.

11. A display device comprising: The display panel comprises any one of claims 1-10.

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