Display panel and display apparatus

Abstract

A display panel and a display apparatus. The display panel comprises a substrate, a light-emitting device layer provided on one side of the substrate, a filter structure provided on the side of the light-emitting device layer distant from the substrate, a support portion provided between the light-emitting device layer and the filter structure, and at least one touch electrode layer provided between the light-emitting device layer and the filter structure. The filter structure comprises a black matrix and a plurality of color filter portions, the black matrix defines a plurality of first openings, and each of the color filter portions is provided in one of the first openings. In an orthographic projection onto the substrate, each light-emitting device is located within one first opening, and at least an edge portion of the support portion overlaps the black matrix. The thickness of the at least edge portion of the support portion gradually decreases in a first direction. The first direction extends from a center of the support portion toward a boundary of the support portion and is parallel to a line connecting centers of two adjacent light-emitting devices. At least a part of one of the at least one touch electrode layer is located on the edge portion of the support portion.

Description

Display panel and display device Technical Field

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

[0002] With the development of display technology, the viewing angle of display devices has gradually increased. While the wide viewing angle of display devices satisfies people's requirements for the viewing effect of video images, it also leads to the risk of information leakage carried by the display devices.

[0003] Summary of the Invention

[0004] On one hand, a display panel is provided. The display panel includes: a substrate; a light-emitting device layer disposed on one side of the substrate; a light-filtering structure disposed on the side of the light-emitting device layer away from the substrate; at least one support portion disposed between the light-emitting device layer and the light-filtering structure; and at least one touch electrode layer disposed between the light-emitting device layer and the light-filtering structure. The light-filtering structure includes a black matrix and a plurality of color filters, the black matrix defining a plurality of first openings; each color filter is disposed within one of the first openings. The light-emitting device layer includes a plurality of light-emitting devices, each light-emitting device being located within the range of one of the first openings in a projected image onto the substrate.

[0005] In the orthographic projection onto the substrate, at least the edge portion of the support overlaps with the black matrix; the thickness of at least the edge portion of the support gradually decreases along a first direction; the first direction is the direction from the center of the support to the boundary of the support, and parallel to the line connecting the centers of two adjacent light-emitting devices. At least a portion of one of the at least one touch electrode layers is located on the edge portion of the support.

[0006] In some embodiments, the support includes a first surface, the first surface including a preset portion, the preset portion overlapping the black matrix in the thickness direction of the substrate. In a first cross-section of the display panel, the extension line of the preset portion of the first surface of the support or the tangent line of the preset portion at multiple points intersects the substrate at an acute angle; the first cross-section of the display panel is along the line connecting the centers of two adjacent light-emitting devices and is perpendicular to the substrate.

[0007] In some embodiments, the support overlaps with the black matrix in orthographic projection onto the substrate. The thickness of at least the edge portion of the support gradually decreases along the direction from the black matrix toward the adjacent color filter portion.

[0008] In some embodiments, the support includes a top surface, a bottom surface, and two side surfaces, the top surface and the bottom surface being disposed opposite each other in the thickness direction of the substrate, with the top surface being farther away from the substrate than the bottom surface; the two side surfaces of the support are disposed opposite each other in a first direction. The edge portion of the support includes the portions of the two side surfaces of the support corresponding to each other in the thickness direction of the substrate.

[0009] In some embodiments, the support includes an arc surface and a bottom surface, the arc surface being farther from the substrate than the bottom surface, and the two ends of the arc surface in a first direction being connected to the two ends of the bottom surface in the first direction respectively; the arc surface is curved toward the substrate, and the first surface of the support and a predetermined portion of the first surface are both arc surfaces.

[0010] In some embodiments, the number of touch electrode layers is one, and at least a portion of the touch electrode layer is located on the surface of the edge portion of the support.

[0011] In some embodiments, at least one touch electrode layer includes a first touch electrode layer and a second touch electrode layer, wherein the first touch electrode layer is closer to the substrate than the second touch electrode layer. At least a portion of the first touch electrode layer is located on the side of the support portion closer to the substrate, and at least a portion of the second touch electrode layer is located on the surface of the edge portion of the support portion.

[0012] In some embodiments, in the region between two adjacent light-emitting devices, the two opposite ends of the first touch electrode layer in a first direction extend relative to the opposite side boundaries of the support portion in a first direction. The two opposite ends of the second touch electrode layer in a first direction are connected to the two opposite ends of the first touch electrode layer in a first direction.

[0013] In some embodiments, the display panel further includes: a plurality of optical structures disposed in the same layer as the support and made of the same material; in a positive projection onto the substrate, each optical structure overlaps with a light-emitting device and a color filter.

[0014] In some embodiments, the display panel further includes: a plurality of optical structures located on the side of the filter structure away from the substrate; in a positive projection onto the substrate, each optical structure overlaps with a light-emitting device and a color filter.

[0015] In some embodiments, the orthogonal projection of the support portion onto the substrate lies within the orthogonal projection range of the black matrix onto the substrate.

[0016] In some embodiments, the display panel further includes: a plurality of optical structures located between the light-emitting device layer and the color filter structure; in orthographic projection onto the substrate, each optical structure overlaps with a light-emitting device and a color filter. The thickness of at least the edge portion of the optical structure gradually decreases along the direction from the color filter towards the adjacent black matrix. The edge portion of the optical structure serves as a support portion.

[0017] In some embodiments, the surface of the edge portion of the optical structure away from the substrate is arc-shaped, and the arc-shaped surface bends toward the substrate.

[0018] In some embodiments, the number of touch electrode layers is one. Between two adjacent optical structures, the two opposite ends of the touch electrode layer rise to the edge portions of the two adjacent optical structures, respectively.

[0019] In some embodiments, at least one touch electrode layer includes a first touch electrode layer and a second touch electrode layer, wherein the first touch electrode layer is closer to the substrate than the second touch electrode layer. Between two adjacent optical structures, the opposite ends of the first touch electrode layer rise to the edge portions of the two adjacent optical structures, respectively.

[0020] In some embodiments, the display panel further includes a touch insulating layer disposed between the first touch electrode layer and the second touch electrode layer, wherein the second touch electrode layer passes through the touch insulating layer and is connected to the first touch electrode layer.

[0021] In some embodiments, there is a gap between two adjacent optical structures, and a portion of the touch electrode layer or the first touch electrode layer is located within the gap.

[0022] In some embodiments, the display panel further includes a touch protection layer disposed on the side of the light filter structure near the substrate, the touch protection layer covering at least one touch electrode layer and a support portion.

[0023] In some embodiments, the display panel further includes an encapsulation structure disposed between the light-emitting device layer and at least one touch electrode layer, wherein the support portion is located on the side of the encapsulation structure away from the substrate.

[0024] On the other hand, a display device is provided. The display device includes a display panel and a driving circuit as described in any of the above embodiments, wherein the driving circuit is electrically connected to the display panel. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0026] Figure 1 is a structural diagram of a display device according to some embodiments;

[0027] Figure 2 is a plan view of a display device according to some embodiments;

[0028] Figure 3 is a cross-sectional structural diagram of the display panel of some embodiments obtained according to the cross-section line BB in Figure 2;

[0029] Figure 4 is a cross-sectional structural diagram of the display panel of some other embodiments obtained according to the cross-section line BB in Figure 2;

[0030] Figure 5 is a cross-sectional structural diagram of the display panel of some other embodiments obtained according to the cross-section line BB in Figure 2;

[0031] Figure 6 is a cross-sectional structural diagram of the display panel of some other embodiments, obtained according to the cross-section line BB in Figure 2;

[0032] Figure 7A is an enlarged structural diagram of the display panel of some embodiments based on region C in Figure 2;

[0033] Figure 7B is an enlarged structural diagram of the display panel of some other embodiments based on region C in Figure 2;

[0034] Figure 7C is an enlarged structural diagram of the display panel of some other embodiments based on region C in Figure 2;

[0035] Figure 8 is a cross-sectional structural diagram of the display panel of some other embodiments obtained according to the cross-section line BB in Figure 2;

[0036] Figure 9 is a cross-sectional structural diagram of the display panel of some other embodiments, obtained according to the cross-section line BB in Figure 2;

[0037] Figure 10 is a cross-sectional structural diagram of the display panel of some other embodiments obtained according to the cross-section line BB in Figure 2;

[0038] Figure 11 is a cross-sectional structural diagram of the display panel of some other embodiments obtained according to the cross-section line BB in Figure 2;

[0039] Figure 12 is a cross-sectional structural diagram of the display panel of some other embodiments obtained according to the cross-section line BB in Figure 2;

[0040] Figure 13 is a cross-sectional structural diagram of the display panel of some other embodiments obtained according to the cross-section line BB in Figure 2;

[0041] Figure 14 is an enlarged structural diagram of the display panel of some other embodiments based on region C in Figure 2;

[0042] Figure 15 is a cross-sectional structural diagram of the display panel of some other embodiments obtained according to the cross-section line BB in Figure 2;

[0043] Figure 16 is a cross-sectional view of the display panel of some other embodiments, obtained according to the cross-sectional line BB in Figure 2. Detailed Implementation

[0044] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0045] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0046] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0047] In describing some embodiments, the terms "coupled" and "connected," and their derivative expressions, may be used. The term "connected" should be interpreted broadly; for example, a "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection via an intermediate medium. The term "coupled," for example, indicates that two or more components have direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0048] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0049] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0050] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0051] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0052] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0053] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0054] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0055] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0056] Embodiments of this disclosure provide a display device 100.

[0057] In some embodiments, as shown in FIG1, the display device 100 includes a display panel 10 and a driving circuit 20, wherein the driving circuit 20 is electrically connected to the display panel 10.

[0058] Figure 2 is a plan view of a display device 100 according to some embodiments. Figure 2 only shows the display panel 10 and some of the light-emitting devices 2 in the display panel 10. In addition to the display panel 10 shown in Figure 2, the display device 100 also includes other structures, such as driving circuit 20. The number of light-emitting devices 2 included in the display panel 10 is not limited to that shown in Figure 2, and the display panel 10 also includes other structures in addition to the light-emitting devices 2 shown in Figure 2.

[0059] As shown in Figure 2, the display device 100 can be any device that displays moving (e.g., video), stationary (e.g., still image), text, or images.

[0060] The display device 100 may be applied to or associated with electronic devices, including but not limited to mobile phones, wireless devices, PDAs (Personal Digital Assistants), PIAs (Personal Information Assistants), handheld or portable computers, GPS receivers / navigators, cameras, video cameras, game consoles, wearable devices, flat panel displays, computer monitors, automotive displays (e.g., odometer displays), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic billboards or signs, and aesthetic structures (e.g., displays of images of a piece of jewelry).

[0061] In terms of its form, the display device 100 can be a flat panel display device, a curved display device, or a foldable display device, etc. In terms of its shape, the display device 100 can be rectangular or circular, etc. There are no limitations in this regard; it can be adapted to actual needs.

[0062] For example, the display device 100 may further include a frame and other electronic components, and the display panel 10 may be disposed within the frame. The driving circuit 20 is configured to send driving signals to the display panel 10, such as display driving signals and / or touch driving signals. The display panel 10 displays images and / or performs touch operations under the drive of the driving circuit 20.

[0063] For example, the driving circuit 20 may be disposed on a PCB (Printed Circuit Board) or an FPC (Flexible Printed Circuit).

[0064] Figure 3 is a cross-sectional structural diagram of the display panel 10 obtained according to the cross-sectional line BB in Figure 2. Figure 3 only shows a portion of the film layer structure included in the display panel 10. The display panel 10 may also include other structures besides the film layer structure shown in Figure 3. The cross-sectional structural diagrams of the display panel 10 referred to in the following description of the display panel 10 of other embodiments also only show a portion of the film layer structure included in the display panel 10.

[0065] In some embodiments, as shown in FIG3, the display panel 10 includes a substrate 1, a light-emitting device layer disposed on one side of the substrate 1, and an encapsulation structure 9. The light-emitting device layer includes a plurality of light-emitting devices 2, and the encapsulation structure 9 is disposed on the side of the light-emitting device layer away from the substrate 1 and covers the plurality of light-emitting devices 2.

[0066] By setting the encapsulation structure 9, it is possible to prevent water and oxygen in the environment from entering the display panel 10 and causing adverse effects on the light-emitting device 2.

[0067] For example, as shown in FIG3, the display panel 10 further includes a pixel definition layer (PDL), which has a plurality of second openings K2, and each light-emitting device 2 is disposed in one of the second openings K2.

[0068] The multiple second openings K2, spaced apart by the pixel delimiting layer PDL, define the area where the light-emitting devices 2 are positioned. During the manufacturing process of the display panel 10, by controlling the shape and position of the pixel delimiting layer PDL, it can be ensured that each light-emitting device 2 is accurately positioned at its target location, thereby improving the resolution and clarity of the display panel 10.

[0069] For example, the pixel defining layer (PDL) can be made of a light-transmitting material or a light-blocking material. The material of the pixel defining layer (PDL) can be at least one of inorganic and organic materials. When the pixel defining layer (PDL) is made of a light-blocking material, as shown in Figure 3, the pixel defining layer (PDL) can be a black pixel defining layer (BPDL).

[0070] In the display panel 10, color crosstalk may occur between adjacent light-emitting devices 2 due to light scattering or interference. The black pixel delimiter layer (BPDL) can act as a barrier to effectively isolate light interference between adjacent light-emitting devices 2, ensuring that each light-emitting device 2 can independently and accurately display its proper color, thereby improving the color performance and accuracy of the display panel 10.

[0071] The black pixel boundary layer (BPDL) can effectively absorb or block external ambient light, preventing it from entering the display panel 10 and reducing the reflection of external light by reflective structures (such as the metal film layer structure in the display panel 10). This reduces the light interference of reflected light from the display panel 10 on the display effect and improves the display contrast.

[0072] In some embodiments, as shown in FIG3, the display panel 10 further includes a light filter structure 3, which is disposed on the side of the light-emitting device layer away from the substrate 1. The light filter structure 3 includes a black matrix 31 and a plurality of color filter portions 32. The black matrix 31 defines a plurality of first openings K1, and each color filter portion 32 is disposed within a first opening K1.

[0073] The color filter 32 includes, but is not limited to, a color filter (CF). For example, the multiple color filters 32 included in the filter structure 3 can be red filters, green filters, or blue filters, and the multiple filters constitute a filter layer.

[0074] When the light emitted by the light-emitting device 2 shines on the color filter 32, light that conforms to the specific wavelength range of the color filter 32 can pass through, while light of other wavelengths will be filtered out or weakened, thereby achieving color filtering and adjustment of the emitted light from the display panel 10.

[0075] When the light-emitting device 2 is a colored light-emitting device, for example, when the light-emitting device 2 is a red light-emitting device, the color filter 32 provided corresponding to the red light-emitting device is a red light color filter. The wavelength range of the light emitted through the red light color filter is approximately the same as the wavelength range of the light emitted by the red light-emitting device. The light emitted by the red light-emitting device is emitted after passing through the red light color filter. When the light emitted by other light-emitting devices 2 of other light-emitting colors adjacent to the red light-emitting device, such as the light emitted by the green light-emitting device and / or the blue light-emitting device, shines on the red light filter, the light emitted by the green light-emitting device and / or the blue light-emitting device cannot pass through the red light filter and is emitted. This can improve the color saturation of the red light emitted in the area defined by the red light-emitting device in the display panel 10.

[0076] That is, when the light-emitting device 2 includes a variety of light-emitting devices 2 with different light-emitting colors, by setting the color filter 32, the color saturation of the display panel 10 can be improved, making the colors displayed on the screen more vivid and lively.

[0077] When the light-emitting device 2 is a white light-emitting device, the white light emitted by the white light-emitting device can be converted into colored light and emitted after passing through the corresponding color filter 32, thereby realizing the color display of the display panel 10.

[0078] By providing a color filter 32 corresponding to the light emission direction of each light-emitting device 2, the portion of the light emitted by the light-emitting device 2 that illuminates the corresponding color filter 32 can pass through the color filter 32 and exit, which helps to improve the brightness and contrast of the displayed image, making the image clearer and more vivid. Meanwhile, the portion of the light emitted by the light-emitting device 2 that illuminates the black matrix 31 is blocked by the black matrix 31. In this way, crosstalk does not occur between adjacent light-emitting devices 2, ensuring the display effect of the display panel 10.

[0079] Meanwhile, by setting a color filter 32 corresponding to the color emitted by the light-emitting device 2 on the light-emitting side of the light-emitting device 2, the natural light incident from the light-emitting side of the display panel 10 first enters the interior of the display panel 10 through the filter layer. The color filter 32, which can only transmit light of a single color, filters out most of the light. When the small portion of the light entering the interior of the display panel 10 is reflected by the metal material inside the display panel 10 and the microcavity of the light-emitting device 2, some light is lost. When the reflected light is emitted again through the color filter 32, the reflected light is filtered out again by the color filter 32, further reducing the intensity of the emitted reflected light. This makes the intensity of the emitted reflected light very small, so there is no need to set a circular polarizer in the display panel 10 to reduce reflection, thus achieving the effect of reducing the thickness of the display panel 10.

[0080] In some embodiments, the display panel 10 is a touch display panel, and the display panel 10 further includes a touch structure, the area defined by the touch structure being the touch area of ​​the display panel 10.

[0081] In some examples, the display panel 10 includes a touch electrode layer TM, such as the touch electrode layer TM shown in FIG3. In this case, the touch structure of the display panel 10 is a self-capacitive touch structure, and the touch electrode layer TM includes a plurality of touch electrodes spaced apart from each other. Each touch electrode forms a capacitance with ground. When a conductive object (e.g., a finger) touches the touch area of ​​the display panel 10, the capacitance formed between the touch electrode corresponding to the touch position and ground changes, thereby determining the touch position based on the change in capacitance formed between each touch electrode and ground in the touch structure.

[0082] Figure 4 is another cross-sectional structure diagram of the display panel 10 obtained according to the cross-sectional line BB in Figure 2.

[0083] In other examples, the display panel 10 includes multiple (two or more) touch electrode layers TM, such as the first touch electrode layer TMA and the second touch electrode layer TMB shown in FIG. 4. In this case, the touch structure of the display panel 10 can be a mutual capacitance touch structure, which includes touch electrodes and connecting bridges. The touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes, and the connecting bridges include a first bridge and a second bridge.

[0084] Multiple first touch electrodes can be arranged in multiple rows, with adjacent first touch electrodes in the same row connected by a first electrical bridge. Correspondingly, multiple second touch electrodes can be arranged in multiple columns, with adjacent second touch electrodes in the same column connected by a second electrical bridge.

[0085] One of the first touch electrode and the second touch electrode is, for example, a touch driving electrode Tx, and the other is a touch sensing electrode Rx.

[0086] The first touch electrode and the second touch electrode may be located in the same touch electrode layer TM, and one of the first bridge and the second bridge may be disposed in the same layer as the touch electrode, while the other is located in another touch electrode layer TM; or, the first touch electrode and the first bridge may be located in the same touch electrode layer TM, while the second touch electrode and the second bridge may be located in another touch electrode layer TM.

[0087] Touch electrodes connected sequentially within the same row (first or second touch electrode) are called row electrodes, and touch electrodes connected sequentially within the same column are called column electrodes. Capacitance is formed where row and column electrodes intersect. When a conductive object (e.g., a finger) touches the touch area of ​​the display panel 10, it affects the coupling between the row and column electrodes near the touch point, thus changing the capacitance between them. The capacitance values ​​between all row and column electrodes are obtained, representing the capacitance distribution of the entire touch structure. The location of the touch point is determined based on this capacitance change data.

[0088] For example, as shown in FIG4, when the display panel 10 includes multiple (two or more) touch electrode layers TM, a touch insulating layer 7 is also provided between adjacent touch electrode layers TM.

[0089] By setting the touch insulating layer 7, adjacent touch electrode layers TM are separated, and the parts in different touch electrode layers TM that need to be connected can be connected through the through holes that penetrate the touch insulating layer 7.

[0090] In some embodiments, as shown in Figures 3 and 4, the display panel 10 further includes a touch protection layer 8, which is disposed on the side of the touch electrode layer TM furthest from the substrate 1 and covers the touch electrode layer TM.

[0091] In some embodiments, as shown in Figures 3 and 4, the touch electrode layer TM is disposed on the side of the filter structure 3 away from the substrate 1. The display panel 10 also includes a first protective layer OC1 disposed between the filter structure 3 and the touch electrode layer TM.

[0092] For example, the first protective layer OC1 is made of a light-transmitting material. The material of the first protective layer OC1 includes, but is not limited to, polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polystyrene (PS), or high-impact polystyrene (HIPS).

[0093] By setting the first protective layer OC1, it serves two purposes: firstly, it separates the touch electrode layer TM from the filter structure 3; secondly, the surface of the first protective layer OC1 away from the substrate 1 is relatively flat, allowing the subsequently formed touch electrode layer TM to be formed on a flat surface, which helps to improve the accuracy of touch detection.

[0094] In some embodiments, as shown in Figures 3 and 4, the display panel 10 further includes an optical structure 6 disposed on the side of the touch electrode layer TM away from the substrate 1. In a normal projection onto the substrate 1, each optical structure 6 overlaps with a light-emitting device 2 and a color filter 32.

[0095] For example, the optical structure 6 includes, but is not limited to, a microlens structure.

[0096] By setting the optical structure 6, the diffusion and attenuation of light emitted by the light-emitting device 2 during propagation can be reduced, thereby improving the light utilization efficiency, increasing the brightness of the light-emitting device 2, and improving the display effect. By optimizing the distribution and focusing of light, the lens also helps to improve the contrast of the displayed image, making the image more vivid and lifelike, and enhancing the viewing experience of the display panel 10.

[0097] As shown in Figure 4, the dotted-line arrow in Figure 4 indicates the emission direction of some of the light emitted by the light-emitting device 2 in the display panel 10. As shown in Figure 3 or Figure 4, the emission angle of the light emitted by the light-emitting device 2 in the display panel 10 is relatively large, and the display panel 10 has a large viewing range.

[0098] In the display panel 10, the optical structure 6 can focus and scatter the light emitted by its corresponding light-emitting device 2 to form a clear image. When the optical structure 6 is tilted, the propagation path of the light emitted by the light-emitting device 2 changes as it passes through the optical structure 6. On the one hand, this may affect the color distribution of the image displayed on the display panel 10, causing color deviation. Color deviation reduces the overall image quality and affects the viewing experience. On the other hand, it may also cause the distribution of the light emitted by the light-emitting device 2 on the display panel 10 to become uneven. Uneven brightness of the displayed image will make the image look less clear and comfortable.

[0099] In the case where the display panel also includes a touch electrode layer TM and the display panel is a touch display panel, the tilt of the optical structure 6 may also cause the touch operation of the touch display panel to become insensitive or inaccurate.

[0100] Based on this, in some embodiments, as shown in FIG5, the display panel 10 further includes a third protective layer OC3, which is disposed on the side of the privacy shield BM2 away from the substrate 1 and covers the privacy shield BM2. Multiple optical structures 6 may be disposed on the third protective layer OC3.

[0101] For example, the third protective layer OC3 is made of a light-transmitting material. The material of the third protective layer OC3 includes, but is not limited to, polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polystyrene (PS), or high-impact polystyrene (HIPS).

[0102] By setting a third protective layer OC3, the surface of the third protective layer OC3 away from the substrate 1 is relatively flat, so that when the optical structure 6 is formed subsequently, the optical structure 6 can be formed on a relatively flat surface, avoiding defects that may be caused by the tilt of the optical structure 6.

[0103] In some application scenarios, the wide viewing angle of the display panel 10 gives it a large viewing range, with less restriction on the viewing angle, and enables better sharing of the displayed image.

[0104] However, the wide viewing angle of the display panel 10 may lead to the leakage of image information displayed on the display panel 10. Therefore, in some other application scenarios, it is necessary to reduce the viewing angle of the display panel 10 to avoid information leakage caused by wide viewing angle display.

[0105] Based on this, embodiments of the present disclosure provide a display panel 10 that can narrow the viewing angle of the display panel 10.

[0106] Taking the display panel 10 as an example, which includes a first touch electrode layer TMA and a second touch electrode layer TMB, in some embodiments, as shown in FIG5, the touch electrode layer TM is located on the side of the filter structure 3 away from the substrate 1. Specifically, the display panel 10 includes a touch electrode layer TM disposed on the side of the filter structure 3 away from the substrate 1.

[0107] In some embodiments, as shown in FIG5, the display panel 10 further includes a privacy structure BM2 disposed between the second touch electrode layer TMB and the optical structure 6, the privacy structure BM2 being disposed corresponding to the black matrix 31; in a projection onto the substrate 1, the privacy structure BM2 has a plurality of third openings K3 disposed corresponding to a plurality of light-emitting devices 2. In a projection onto the substrate 1, each first opening K1 of the black matrix 31 at least partially overlaps with a third opening K3 of the privacy structure BM2; or, in a projection onto the substrate 1, each third opening K3 of the privacy structure BM2 is surrounded by a first opening K1 of the black matrix 31. The touch electrode layer TMB is disposed between the light filter structure 3 and the privacy structure BM2.

[0108] The privacy screen structure BM2 is made of a light-shielding material. Specifically, the privacy screen structure BM2 may be made of the same material as the black matrix 31, or it may be made of a different material. This is only an illustrative example of some possible embodiments of this disclosure and is not intended to limit the scope of this disclosure.

[0109] As shown in Figure 5, the light emitted by the light-emitting device 2 passes through the first opening K1 and the third opening K3, and then continues to illuminate the optical structure 6 before exiting. The portion of the light emitted by the light-emitting device 2 that passes through the first opening K1 and illuminates the privacy structure BM2 is blocked by the privacy structure BM2. By setting the privacy structure BM2, the larger angle portion of the light emitted by the light-emitting device 2 can be blocked. Compared with the display panel shown in Figure 4, the display panel shown in Figure 5 can narrow the viewing angle of the display panel 10, giving the display panel 10 a certain privacy protection effect, thereby reducing the risk of information leakage.

[0110] Figure 5 is another cross-sectional structure diagram of the display panel 10 obtained according to the cross-sectional line BB in Figure 2.

[0111] In some embodiments, as shown in FIG5, the touch electrode layer TM does not overlap with the light-emitting device 2 in the orthographic projection onto the substrate 1. In this case, the display panel 10 may include one touch electrode layer TM; of course, the display panel 10 may also include multiple (two or more) touch electrode layers TM, such as the first touch electrode layer TMA and the second touch electrode layer TMB shown in FIG5.

[0112] As shown in Figure 5, taking the display panel 10 including a first touch electrode layer TMA and a second touch electrode layer TMB as an example, the first protective layer OC1 covers the filter structure 3, and the first touch electrode layer TMA can be disposed on the first protective layer OC1.

[0113] A touch insulating layer 7 covers the first touch electrode layer TMA, and the first touch electrode layer TMA and the second touch electrode layer TMB are separated by the touch insulating layer 7. A touch protective layer 8 is located on the side of the second touch electrode layer TMB away from the substrate 1, and covers the first touch electrode layer TMA and the second touch electrode layer TMB. The privacy structure BM2 may be disposed on the touch protective layer 8.

[0114] In some embodiments, as shown in FIG5, the display panel 10 further includes a second protective layer OC2, which is disposed on the side of the plurality of optical structures 6 away from the substrate 1 and covers the plurality of optical structures 6.

[0115] For example, the second protective layer OC2 is made of a light-transmitting material. The material of the second protective layer OC2 includes, but is not limited to, polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polystyrene (PS), or high-impact polystyrene (HIPS).

[0116] By setting the second protective layer OC2, on the one hand, the optical structure 6 can be protected from impact damage, and on the other hand, the surface of the second protective layer OC2 away from the substrate 1 is relatively flat, which improves the thickness uniformity of the display panel 10.

[0117] Figure 6 is another cross-sectional view of the display panel 10 obtained according to the cross-section line BB in Figure 2. Figures 7A, 7B and 7C are enlarged views of some embodiments of the display panel 10 according to region C in Figure 2. In order to clearly illustrate the arrangement of the support portion 4, only some of the film layer structures included in the display panel 10 are shown in Figures 7A, 7B and 7C, such as the light-emitting device 2, the support portion 4 and the optical structure 6. Of course, the display panel 10 may also include other structures besides the film layer structures shown in Figures 7A, 7B and 7C.

[0118] In other embodiments, as shown in FIG6, the touch electrode layer 5 is located on the side of the filter structure 3 near the substrate 1. Specifically, the touch electrode layer 5 is disposed between the light-emitting device layer and the filter structure 3.

[0119] By placing the touch electrode layer 5 on the side of the filter structure 3 close to the substrate 1, and making the orthogonal projection of the touch electrode layer 5 on the substrate 1 within the orthogonal projection of the black matrix 31 on the substrate 1, the portion of the light from the external environment that shines on the touch electrode layer 5 will be reflected by the touch electrode layer 5 and directed toward the black matrix 31, thereby avoiding the impact of the external ambient light reflected by the touch electrode layer 5 on the display effect.

[0120] In some embodiments, as shown in FIG6, 7A, 7B, 7C, 13 and 14, the display panel 10 further includes at least one support portion 4.

[0121] For example, along a direction perpendicular to the display surface of the display panel 10, the support portion 4 is disposed between the light-emitting device layer and the light-filtering structure 3, and at least a portion of a touch electrode layer 5 is located on the edge portion Q of the support portion 4.

[0122] Along a direction parallel to the display surface of the display panel 10, the support part 4 is located between two adjacent light-emitting devices 2.

[0123] In the orthographic projection onto the substrate 1, at least the edge portion Q of the support portion 4 overlaps with the black matrix 31.

[0124] In some examples, such as screenshot 13, the edge portion Q of the support 4 overlaps with the black matrix 31 in the orthographic projection onto the substrate 1. In other examples, such as FIG6, the support 4 falls within the area of ​​the pixel defining layer BPDL in the orthographic projection onto the substrate 1.

[0125] The thickness of at least the edge portion Q of the support portion 4 gradually decreases along the first direction X; the first direction X is the direction from the center of the support portion 4 to the boundary of the support portion 4 and parallel to the line connecting the centers of two adjacent light-emitting devices 2.

[0126] As shown in Figure 6, the support portion 4, with its separately disposed film structure, falls within the area of ​​the black matrix 31 in its orthogonal projection onto the substrate 1. In this case, at least a portion of the touch electrode layer 5 can cover the entire support portion 4. Along the first direction X, the size of the black matrix 31 is larger than the size of the support portion 4; the difference between the size of the black matrix 31 along the first direction X and the size of the support portion 4 along the first direction X is less than or equal to 10 μm. Along a direction perpendicular to the display surface of the display panel 10, such as the Z direction shown in Figure 6, the size of the support portion 4 is greater than or equal to 2 μm and less than or equal to 5 μm.

[0127] In this case, as shown in Figures 6, 7A, 7B, and 7C, in the orthographic projection onto the substrate 1, the support portion 4 includes two opposing boundaries along the first direction X. The dimensions of these two boundaries along the first direction X can be greater than or equal to one-quarter of the dimension of the support portion 4 along the first direction X, and less than or equal to two-fifths of the dimension of the support portion 4 along the first direction X.

[0128] As shown in Figures 7A, 7B, and 7C, the boundary of the support portion 4 can refer to the boundary of the orthographic projection of the support portion 4 onto the substrate 1.

[0129] As shown in Figure 13, in the orthographic projection onto the substrate 1, the edge portion of the optical structure 6 overlaps with the black matrix 31; in this case, the edge portion of the optical structure 6 can serve as the support portion 4 in the display panel 10. In this situation, the touch electrode layer 5 can either cover the entire support portion 4 or cover only the edge portion of the support portion 4.

[0130] In this case, as shown in Figures 13 and 14, along the direction perpendicular to the display surface of the display panel 10, the part where the optical structure 6 overlaps with the black matrix 31 is the edge part of the optical structure 6, and the edge part of the optical structure 6 serves as the support part 4.

[0131] As shown in Figure 14, in the orthographic projection onto the substrate 1, the edge portion of the support portion 4 includes two opposing boundaries along the first direction X. When the edge portion of the optical structure 6 serves as the support portion 4, one boundary of the support portion 4 along the first direction X overlaps with the boundary of the optical structure 6. The dimensions of these two opposing boundaries of the edge portion of the support portion 4 along the first direction X can be greater than or equal to one-half of the dimension of the support portion 4 along the first direction X, and less than or equal to four-fifths of the dimension of the support portion 4 along the first direction X.

[0132] As shown in Figure 14, the boundary of the optical structure 6 can refer to the boundary of the orthographic projection of the optical structure 6 onto the substrate 1; the center of the optical structure 6 can refer to the geometric center of the shape of the orthographic projection of the optical structure 6 onto the substrate 1. For example, if the orthographic projection of the optical structure 6 onto the substrate 1 is circular, the geometric center of the optical structure 6 can refer to the center of the circular projection shape.

[0133] For example, the center of the light-emitting device 2 may refer to the center of the orthogonal projection of the portion of the light-emitting device 2 located within the second opening K2 defined by the pixel defining layer BPDL onto the substrate 1.

[0134] The shape of the portion of the light-emitting device 2 located within the second opening K2 is related to the shape of the second opening K2. The shape of the second opening K2 can be at least one of a rectangle, a circle, an ellipse, or a polygon, and this disclosure does not limit it.

[0135] For example, as shown in Figure 7A, the orthographic projection of the portion of the light-emitting device 2 located within the second opening K2 onto the substrate 1 is rectangular, and the center of the light-emitting device 2 is the intersection of the diagonals of the rectangle. When the orthographic projection of the portion of the light-emitting device 2 located within the second opening K2 onto the substrate 1 is elliptical, the center of the light-emitting device 2 is the intersection of the major and minor axes of the ellipse. When the orthographic projection of the portion of the light-emitting device 2 located within the second opening K2 onto the substrate 1 is circular, the center of the light-emitting device 2 is the center of the circle.

[0136] For example, in the display panel 10, as shown in FIG6, the support portion 4 in the display panel 10 can be provided separately, or, as shown in FIG13, it can be a part of other structures in the display panel 10, such as the optical structure 6, as the support portion 4.

[0137] For example, as shown in Figure 6, when the support portion 4 is a separately configured structure, the center of the support portion 4 can refer to the geometric center of the orthographic projection of the support portion 4 onto the substrate 1, or the midpoint of the line connecting the geometric centers of two adjacent light-emitting devices 2. The multiple arrows shown in Figures 7A, 7B, and 7C point in the first direction X.

[0138] As shown in Figures 7A and 7B, the display panel 10 includes multiple support portions 4, which are separated from each other. The shape of the orthographic projection of the support portion 4 onto the substrate 1 can be circular, near-circular, elliptical, near-elliptical, or polygonal. When the orthographic projection of the support portion 4 onto the substrate 1 is circular, the center H of the support portion 4 can refer to the center of the circle. When the orthographic projection of the support portion 4 onto the substrate 1 is elliptical, the center H of the support portion 4 can be the intersection of the major axis and the minor axis of the ellipse. When the orthographic projection of the support portion 4 onto the substrate 1 is polygonal, the center H of the support portion 4 can refer to the intersection of any two intersecting diagonals of the polygon.

[0139] By providing multiple support portions 4 that are separated from each other, the amount of material used in the support portions 4 of the display panel 10 can be reduced, which helps to reduce the cost of the display panel 10.

[0140] As shown in Figure 7C, the support portion 4 is a single, integral film structure. In this case, the center H of the support portion 4 has multiple points. The multiple light-emitting devices 2 of the display panel 10 are arranged in multiple rows and columns. The center of the support portion 4 can be the intersection of the lines connecting the geometric centers of two adjacent light-emitting devices 2 in one column and adjacent light-emitting devices 2 in a different row in another column; or it can be the midpoint of the line connecting the geometric centers of light-emitting devices 2 in one column and adjacent light-emitting devices 2 in the same row in another column.

[0141] When the support portion 4 is a single integrated film structure, its coverage area is larger. A support portion 4 is provided between every two adjacent light-emitting devices 2 in any direction. This ensures that at least a portion of the touch electrode layer 5 between any two adjacent light-emitting devices 2 is located on the first surface 4a of the support portion 4. The larger portion of the touch electrode layer 5 on the first surface 4a of the support portion 4 allows for better blocking and reflection of large-angle light emitted by the light-emitting devices 2, thereby improving the privacy protection effect of the display panel 10. The specific privacy protection principle will be described in detail in later embodiments and will not be elaborated here.

[0142] For example, as shown in Figures 13 and 16, when a portion of the optical structure 6 is used as the support portion 4, the edge portion of the optical structure 6 extends towards the black matrix 31 and overlaps with the black matrix 31 in the orthographic projection onto the substrate 1. In this case, as shown in Figure 14, in the orthographic projection onto the substrate 1, the support portion 4 is annular, and the center H of the support portion 4 can be the center point of the line connecting the two intersection points of the extension lines along the arrangement directions of two adjacent support portions 4 and the inner and outer boundary lines of the annulus. The direction indicated by the multiple arrows shown in Figure 14 is the first direction X.

[0143] The fact that at least the edge portion of the support portion 4 overlaps with the black matrix 31 in the thickness direction of the substrate 1 means, as shown in Figures 6 and 7A, when the support portion 4 is a separate structure, the entire support portion 4 overlaps with the black matrix 31 in the thickness direction of the substrate 1; as shown in Figures 13 and 16, when a portion of the optical structure 6 is used as the support portion 4, the edge portion of the optical structure 6 overlaps with the black matrix 31 in the thickness direction of the substrate 1, and the portion of the optical structure 6 is used as the support portion 4. The support portion 4 can overlap entirely with the black matrix 31 in the thickness direction of the substrate 1, or it can overlap partially with the black matrix 31 in the thickness direction of the substrate 1.

[0144] For example, as shown in Figures 6 and 8, the touch electrode layer 5 in the display panel 10 can be a single touch electrode layer 5 or multiple (two or more) touch electrode layers 5 (e.g., the first touch electrode layer 51 and the second touch electrode layer 52 shown in Figure 8).

[0145] When the display panel 10 includes multiple touch electrode layers 5, at least a portion of one of the multiple touch electrode layers 5 is located on the edge portion of the support portion 4.

[0146] The specific arrangement of the support part 4 and the touch electrode layer 5 will be described in detail later, and will not be repeated here.

[0147] In this embodiment, by providing a support portion 4 in the display panel 10 and placing at least a portion of the touch electrode layer 5 on the edge portion Q of the support portion 4, the thickness of at least the edge portion Q of the support portion 4 gradually decreases along the first direction X, and the spacing between the portion of the touch electrode layer 5 located on the edge portion of the support portion 4 and the substrate 1 (e.g., the spacing along the Z direction shown in FIG. 6) also gradually decreases along the first direction X. In this way, the area of ​​the touch electrode layer 5 is increased compared to the touch electrode layer TM with an overall planar structure shown in FIG. 4 and FIG. 5.

[0148] As shown in Figures 6 and 8, the portion of the touch electrode layer 5 located on the support 4 generally protrudes away from the substrate 1. This portion of the touch electrode layer 5 on the support 4 includes an arc-shaped or polygonal surface. Due to the irregularity of the arc-shaped or polygonal surface shape, it can generate reflected light at various angles. This diversity allows the light from the light-emitting device 2 illuminating the touch electrode layer 5 to cover a wider area during reflection, creating richer visual effects.

[0149] As shown in Figures 6 and 8, the large-angle light emitted by the light-emitting device 2 will illuminate the touch electrode layer 5. The light emitted by the large-angle light emitted by the light-emitting device 2 that illuminates the surface of the touch electrode layer 5 near the substrate 1 will be reflected by the touch electrode layer 8 and illuminate the pixel boundary layer BPDL, and will not continue to be reflected out. The portion of the large-angle light emitted by the light-emitting device 2 that illuminates the surface of the touch electrode layer 5 away from the substrate 1 will be reflected by the touch electrode layer 5 towards the black matrix 31, and will not continue to be reflected out.

[0150] As shown in Figures 4 and 5, the overall planar structure of the touch electrode layer TM reflects light at a relatively single angle, resulting in a simpler reflection effect. In this embodiment, the portion of the touch electrode layer 5 located on the support portion 4 has an arc-shaped or zigzag surface. Compared to the planar structure of the touch electrode layer TM, it can achieve better blocking and reflection of large-angle light emitted by the light-emitting device 2, thereby narrowing the angle of light emitted from the display panel 10 and thus narrowing the viewing angle of the display panel 10.

[0151] For example, the material of the touch electrode layer 5 can be a metal or a metal oxide. For instance, the material of the touch electrode layer 5 can be at least one of metals such as gold, silver, copper, aluminum, platinum, and nickel gold, or it can be ITO (Indium tin oxide).

[0152] When the touch electrode layer 5 is made of an opaque material, as shown in Figures 6 and 8, the light illuminating the touch electrode layer 5 will be reflected by the touch electrode layer 5, thereby blocking the light illuminating the light source 2 from the touch electrode layer 5 and preventing large-angle light from emanating from the display panel 10.

[0153] When the touch electrode layer 5 is made of a semi-transparent and semi-reflective material, part of the light emitted by the light-emitting device 2 can pass through the touch electrode layer 5 and be emitted. However, the light will be weakened after passing through the touch electrode layer 5. As a result, the visible brightness of the light emitted at a large angle is reduced, and the clarity of the screen display is reduced, thus achieving a certain degree of privacy protection.

[0154] This document is provided as an illustrative example of some possible embodiments of the present disclosure and is not intended to limit the scope of the disclosure.

[0155] In some embodiments, as shown in Figures 6 and 8, the encapsulation structure 9 is disposed between the light-emitting device layer and the touch electrode layer 5, and the support portion 4 is located on the side of the encapsulation structure 9 away from the substrate 1.

[0156] For example, as shown in FIG6, the display panel 10 includes a touch electrode layer 5. In this case, the touch electrode layer 5 is located between the encapsulation structure 9 and the filter structure 3, and the support portion 4 may be disposed on the encapsulation structure 9. At least a portion of the touch electrode layer 5 is located on the surface of the edge portion of the support portion 4.

[0157] For example, as shown in Figure 15, the display panel 10 includes a first touch electrode layer 51 and a second touch electrode layer 52, with the first touch electrode layer 51 closer to the substrate 1 than the second touch electrode layer 52. In this case, both the first touch electrode layer 51 and the second touch electrode layer 52 are located between the encapsulation structure 9 and the filter structure 3. At least a portion of the first touch electrode layer 51 is located on the side of the support portion 4 closest to the substrate 1, and at least a portion of the second touch electrode layer 52 is located on the surface of the edge portion of the support portion 4. The second touch electrode layer 52 is connected to the first touch electrode layer 51 through the touch insulating layer 7. In this case, the specific connection method between the second touch electrode layer 52 and the first touch electrode layer 51 will be described in detail in the following embodiments, and will not be repeated here.

[0158] In some embodiments, as shown in Figures 6 and 8, the support portion 4 includes a first surface 4a, which includes a preset portion that overlaps with the black matrix 31 in the thickness direction of the substrate 1. In a first cross-section of the display panel 10, the extension line of the preset portion of the support portion 4 or the tangent line of the preset portion at multiple points intersects the substrate 1 at an acute angle; the first cross-section of the display panel 10 is along the line connecting the centers of two adjacent light-emitting devices 2 and is perpendicular to the substrate 1.

[0159] The multiple double-dotted lines shown in Figure 6 are tangents of the preset portion of the support part 4 at multiple points, and the multiple double-dotted lines shown in Figure 9 are extensions of the preset portion of the support part 4. The extensions of the preset portion of the support part 4 or the tangents of the preset portion at multiple points intersect the substrate 1 at acute angles, that is, the preset portion of the support part 4 protrudes away from the substrate 1, and the portion of the touch electrode layer 5 located on the edge of the support part 4 also protrudes away from the substrate 1. In this way, the portion of the light emitted by the light-emitting device 2 with a larger angle will illuminate the portion of the touch electrode layer 5 located on the support part 4, and thus be blocked by the touch electrode layer 5, thereby narrowing the viewing angle of the display panel 10.

[0160] As shown in Figures 6 and 8, in the orthographic projection onto the substrate 1, at least a portion of the support portion 4 overlaps with the black matrix 31, and at least a portion of the touch electrode layer 5 is located on the portion where the support portion 4 overlaps with the black matrix 31. In this way, the touch electrode layer 5 will only block the large-angle light emitted by the light-emitting device 2, but will not block the small-angle emitted light. While narrowing the viewing angle of the display panel 10, it will not affect the normal display of the display panel 10.

[0161] In some embodiments, as shown in Figures 6 and 9, the number of touch electrode layers 5 is one, and at least a portion of the touch electrode layer 5 is located on the surface of the edge portion of the support portion 4.

[0162] In other embodiments, as shown in Figures 8 and 10, the display panel 10 has multiple touch electrode layers 5 (two or more layers). The touch electrode layers 5 may include a first touch electrode layer 51 and a second touch electrode layer 52, with the first touch electrode layer 51 closer to the substrate 1 than the second touch electrode layer 52. At least a portion of the first touch electrode layer 51 is located on the side of the support portion 4 closest to the substrate 1, and at least a portion of the second touch electrode layer 52 is located on the surface of the edge portion of the support portion 4.

[0163] In some embodiments, as shown in Figures 6 and 8, in an orthographic projection onto the substrate 1, the support portion 4 overlaps with the black matrix 31. The thickness of at least the edge portion of the support portion 4 gradually decreases along the direction from the black matrix 31 toward the adjacent color filter portion 32.

[0164] In the display panel 10, the support portion 4 can be provided separately, so that in the orthographic projection onto the substrate 1, the support portion 4 can completely overlap with the black matrix 31, that is, the support portion 4 falls within the range of the black matrix 31. In this case, in order to ensure that the touch electrode layer 5 located on the support portion 4 blocks the large-angle light emitted by the light-emitting device 2, the thickness of at least the edge portion of the support portion 4 is smaller in the direction closer to the light-emitting device 2.

[0165] In some embodiments, as shown in Figures 6 and 8, the support portion 4 includes a bottom surface 41 and an arc surface 42. The arc surface 42 is farther away from the substrate 1 than the bottom surface 41. The two ends of the arc surface 42 in the first direction X are respectively connected to the two ends of the bottom surface 41 in the first direction X. The first direction X is parallel to the line connecting the centers of two adjacent light-emitting devices 2. The arc surface 42 is bent toward the substrate 1. The first surface 4a of the support portion 4 and the preset portion of the first surface 4a are both arc surfaces 42.

[0166] In this case, the thickness of the support portion 4 may gradually decrease from the center of the support portion 4 towards the edge of the support portion 4. For example, the cross-sectional shape of the support portion 4 includes at least one of semi-circular, nearly semi-circular, semi-elliptical, or nearly semi-elliptical shapes.

[0167] The portion of the touch electrode layer 5 located on the support portion 4 is shaped like an arc along the support portion 4. Compared to the touch electrode layer TM with an overall planar structure shown in Figures 4 and 5, the display panel 10 shown in Figures 6 and 8 can increase the reflective area of ​​the touch electrode layer 5 and improve the light reflection effect of the touch electrode layer 5.

[0168] In some embodiments, as shown in Figures 9 and 10, the support portion 4 includes a bottom surface 41, a top surface 43, and two side surfaces 44. The top surface 43 and the bottom surface 41 are disposed opposite each other in the thickness direction of the substrate 1, and the top surface 43 is farther away from the substrate 1 than the bottom surface. The two side surfaces 44 of the support portion 4 are disposed opposite each other in a first direction X.

[0169] The top surface 43 of the support portion 4 has a smaller dimension along the first direction X than the bottom surface 41 along the first direction X, and both side surfaces 44 are inclined relative to the bottom surface 41. The edge portion of the support portion 4 includes the portions of the two side surfaces 44 in the support portion 4 corresponding to each other in the thickness direction of the substrate 1.

[0170] As shown in Figures 9 and 10, the edge portion of the support 4 includes at least the portions corresponding to the two sides 44 of the support 4.

[0171] In some examples, the first surface 4a of the support 4 includes the two side surfaces 44 of the support 4.

[0172] In other examples, the first surface 4a of the support 4 may also include a portion of the top surface 43 of the support 4 near the side surface 44.

[0173] In this case, the thickness of the support portion 4 can be the same or approximately the same in the middle part, and the thickness of the edge part of the support portion 4 gradually decreases from the center of the support portion 4 toward the edge.

[0174] For example, the bottom surface 41 and the top surface 43 of the support portion 4 are parallel or substantially parallel, and the cross-sectional shape of the support portion 4 includes at least one of trapezoidal or near-trapezoidal. The cross-sectional shape of the support portion 4 is a non-right-angled trapezoid, specifically, it can be an isosceles trapezoid or a non-right-angled and non-isosceles trapezoid.

[0175] The shape of the portion of the touch electrode layer 5 located on the support portion 4 is a zigzag shape along the support portion 4. Compared to the touch electrode layer TM with an overall planar structure shown in Figures 4 and 5, the display panel 10 shown in Figures 9 and 10 can increase the reflective area of ​​the touch electrode layer 5 and improve the light reflection effect of the touch electrode layer 5.

[0176] In some embodiments, as shown in Figures 9 and 10, the orthogonal projection of the support portion 4 onto the substrate 1 lies within the orthogonal projection range of the black matrix 31 onto the substrate 1.

[0177] In this configuration, both the support portion 4 and the optical structure 6 are provided separately. Even when the display panel 10 does not include the optical structure 6, the support portion 4 can be provided independently. Furthermore, since the support portion 4 and the black matrix 31 do not overlap, the touch electrode layer 5 subsequently formed on the support portion 4 can be prevented from overlapping with the black matrix 31. This prevents the touch electrode layer 5 and the support portion 4 from obstructing the narrow-viewing-angle light emission of the light-emitting device 2, ensuring the display effect of the narrow-viewing-angle display of the display panel 10.

[0178] Based on the above embodiments, in some embodiments, as shown in FIG8 and FIG10, when the display panel 10 includes a first touch electrode layer 51 and a second touch electrode layer 52, in the region between two adjacent light-emitting devices 2, the two opposite ends of the first touch electrode layer 51 in the first direction X extend relative to the two opposite side boundaries of the support portion 4 in the first direction X; the two opposite ends of the second touch electrode layer 52 in the first direction X are respectively connected to the two opposite ends of the first touch electrode layer 51 in the first direction X.

[0179] As shown in Figures 8 and 10, in the display panel 10, the first touch electrode layer 51 and the second touch electrode layer 52 overlap on the display surface perpendicular to the display panel 10, and the portions that need to be separated are separated by the support portion 4. In the region between two adjacent light-emitting devices 2, the edge portion of the second touch electrode layer 52 contacts the surface of the edge portion of the first touch electrode layer 51 on the side away from the substrate 1. Along the Z direction shown in Figures 8 and 10, the second touch electrode layer 52 and the first touch electrode layer 51 in contact with the second electrode layer 52 surround the support portion 4.

[0180] The edge portion mentioned here refers to the portion of the first touch electrode layer 51 and the second touch electrode layer 52 located between two adjacent light-emitting devices 2, and close to the light-emitting device 2.

[0181] In some examples, as shown in Figures 6, 8, 9, and 10, multiple optical structures 6 are disposed in the same layer as the support portion 4. In the orthographic projection onto the substrate 1, each optical structure 6 overlaps with a light-emitting device 2 and a color filter portion 32.

[0182] For example, there is a gap between two adjacent optical structures 6, and a portion of the first touch electrode layer 51 is located within the gap.

[0183] The term "same-layer configuration" as used here can refer to a layer structure formed by using the same film deposition process to create a film layer for forming a specific pattern, and then using the same photomask to pattern this film layer in a single patterning process. Depending on the specific pattern, the single patterning process may include multiple exposure, development, or etching processes, and the specific pattern in the resulting layer structure can be continuous or discontinuous. These specific patterns may also be at different heights or have different thicknesses. Alternatively, it can refer to all layers being configured on the same film layer structure, with each layer using a different film deposition process to form a characteristic pattern.

[0184] That is, the optical structure 6 and the support portion 4 can be formed simultaneously in the same process step using the same film deposition process. In this case, the support portion 4 and the optical structure 6 are made of the same material. Alternatively, the optical structure 6 and the support portion 4 can be formed separately in different process steps using different film deposition processes. In this case, the support portion 4 and the optical structure 6 can be made of the same material or different materials.

[0185] As shown in Figures 6, 8, 9, and 10, both the first protective layer OC1 and the optical structure 6 are made of light-transmitting materials. The materials of the optical structure 6 include, but are not limited to, polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polystyrene (PS), or high-impact polystyrene (HIPS).

[0186] For example, the refractive index of the optical structure 6 is greater than the refractive index of the first protective layer OC1. For instance, the refractive index of the first protective layer OC1 is greater than or equal to 1.4 and less than 1.6, while the refractive index of the optical structure 6 is greater than 1.6.

[0187] In this way, when the light emitted by the light-emitting device 2 passes through the optical structure 6 with a high refractive index in the display panel 10, the optical structure 6 can efficiently transmit light and reduce light loss caused by interface refraction, thereby improving optical conversion efficiency. After passing through the optical structure 6, the light emitted by the light-emitting device 2 passes through the first protective layer OC1 and is emitted. The light emitted by the light-emitting device 2 passes through the optical structure 6 and the first protective layer OC1 in sequence. By forming an alternating change in the refractive index of the optical structure 6 and the first protective layer OC1, the light emitted by the light-emitting device 2 can be converged from both sides to the center for emission, thereby improving the forward light emission efficiency and reducing screen power consumption.

[0188] By setting the support part 4 and the optical structure 6 in the same layer in the display panel 10, the space within the same film layer structure is fully utilized. While setting the support part 4, no additional film layer structure is added to the display panel 10, which is conducive to achieving a thinner and lighter design of the display panel 10.

[0189] In some embodiments, as shown in Figures 11 and 12, a plurality of optical structures 6 are located on the side of the filter structure 3 away from the substrate 1. In a normal projection onto the substrate 1, each optical structure 6 overlaps with a light-emitting device 2 and a color filter 32. In this case, the display panel 10 may include a single touch electrode layer 5 or multiple layers (two or more) of touch electrode layers 5.

[0190] For example, the support portion 4 is made of a light-transmitting material. The support portion 4 and the optical structure 6 may be made of the same material or different materials. The materials of the support portion 4 include, but are not limited to, polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polystyrene (PS), or high-impact polystyrene (HIPS).

[0191] With this design, the light emitted by the light-emitting device 2 is converged at the angle after passing through the touch electrode layer 5, and then further converged by the optical structure 6, thereby narrowing the viewing angle of the display panel 10.

[0192] In some embodiments, as shown in Figures 13 and 15, a plurality of optical structures 6 are located between the light-emitting device layer and the filter structure 3. In a normal projection onto the substrate 1, each optical structure 6 overlaps with a light-emitting device 2 and a color filter 32.

[0193] As shown in Figures 13 and 15, the edge portion of the optical structure 6 overlaps with the black matrix 31 in its orthographic projection onto the substrate 1. The thickness of at least the edge portion of the optical structure 6 gradually decreases along the direction from the color filter portion 32 toward the adjacent black matrix 31. The edge portion of the optical structure 6 serves as the support portion 4, and the surface of the edge portion of the optical structure 6 away from the substrate 1 is the first surface 4a of the support portion 4.

[0194] As shown in Figures 13 and 15, in the display panel 10, a portion of the optical structure 6 is used as the support part 4, and the viewing angle of the display panel 10 is narrowed through the touch electrode layer 5. Both the touch electrode layer 5 and the optical structure 6 are proprietary structures in the display panel 10. Compared with the display panels shown in Figures 4 and 5, there is no need to set an additional privacy protection structure BM2, which reduces the manufacturing cost of the display panel 10 and reduces the thickness of the display panel 10, which is conducive to achieving a thinner and lighter design of the display panel 10.

[0195] In some embodiments, as shown in Figures 13 and 15, the surface of the edge portion of the optical structure 6 away from the substrate 1 is an arc surface, and the arc surface is curved toward the substrate 1.

[0196] The surface of the edge portion of the optical structure 6 away from the substrate 1 is bent toward the substrate 1. Correspondingly, when the edge portion of the optical structure 6 serves as the support portion 4, the portion of the touch electrode layer 5 located on the support portion 4 is also bent toward the substrate 1. In this way, the touch electrode layer 5 forms an arc shape along the edge portion of the optical structure 6. Compared with the touch electrode layer with an overall planar structure shown in Figures 4 and 5, the reflective area of ​​the touch electrode layer 5 can be increased, and the light reflection effect of the touch electrode layer 5 can be improved.

[0197] In some embodiments, as shown in FIG13, the number of touch electrode layers 5 in the display panel 10 is one. Between two adjacent optical structures 6, the two opposite ends of the touch electrode layer 5 in the first direction X respectively climb onto the edge portions of the two adjacent optical structures 6.

[0198] For example, as shown in FIG13, there is a gap between two adjacent optical structures 6, and a portion of the touch electrode layer 5 is located within the gap.

[0199] As shown in Figure 13, a portion of the touch electrode layer 5 is in contact with the encapsulation structure 9, and another portion overlaps on the edge of the optical structure 6. The shape of the portion of the touch electrode layer 5 that overlaps on the optical structure 6 forms an arc shape along the edge of the optical structure 6. Compared with a touch electrode layer that is planar in structure, this can increase the reflective area of ​​the touch electrode layer 5 and improve the light reflection effect of the touch electrode layer 5.

[0200] In other embodiments, as shown in FIG15, the number of touch electrode layers 5 in the display panel 10 is multiple (two or more layers). The touch electrode layers 5 may include a first touch electrode layer 51 and a second touch electrode layer 52, with the first touch electrode layer 51 being closer to the substrate 1 than the second touch electrode layer 52. Between two adjacent optical structures 6, the opposite ends of the first touch electrode layer 51 in the first direction X respectively rise to the edge portions of the two adjacent optical structures 6.

[0201] For example, as shown in FIG15, there is a gap between two adjacent optical structures 6, and a portion of the first touch electrode layer 51 is located within the gap.

[0202] As shown in Figure 15, a portion of the first touch electrode layer 51 is in contact with the encapsulation structure 9, and another portion overlaps on the edge of the optical structure 6. The shape of the portion of the first touch electrode layer 51 that overlaps on the optical structure 6 forms an arc shape along the edge of the optical structure 6, which can expand the reflective area of ​​the first touch electrode layer 51 and improve the light reflection effect of the first touch electrode layer 51.

[0203] In some embodiments, as shown in FIG13, the touch protection layer 8 covers the touch electrode layer 5 and the support portion 4.

[0204] In the process of manufacturing the display panel 10, a support portion 4 may be formed first on the encapsulation structure 9, followed by the formation of the touch electrode layer 5, and then the formation of the touch protection layer 8, so that the touch protection layer 8 covers the touch electrode layer 5 and the support portion 4.

[0205] When forming the support part 4, it can be a separate support part 4 or an optical structure 6, with the edge portion of the optical structure 6 serving as the support part 4.

[0206] In some other embodiments, as shown in FIG15, the touch protection layer 8 covers the second touch electrode layer 52 and the touch insulating layer 7.

[0207] In the fabrication process of the display panel 10, a support portion 4 may be formed first on the encapsulation structure 9, followed by the formation of a first touch electrode layer 51, then a touch insulating layer 7, then a second touch electrode layer 52, and finally a touch protective layer 8. The touch insulating layer 7 covers the first touch electrode layer 51, and the touch protective layer 8 covers the second touch insulating layer 52. In the thickness direction of the substrate 1, the touch protective layer 8 surrounds the first touch electrode layer 51 and the second touch electrode layer 52.

[0208] Before forming the second touch electrode layer 52, a through hole can be formed in the touch insulating layer 7 to penetrate to the first touch electrode layer 51, so that when the second touch electrode layer 52 is formed, the second touch electrode layer 52 can pass through the touch insulating layer 7 and connect to the first touch electrode layer 51.

[0209] In some examples, as shown in FIG15, the through-hole formed on the touch insulating layer 7 to the first touch electrode layer 51 includes a first portion, the first portion of the through-hole extending from the surface of the touch insulating layer 7 away from the substrate 1 to the surface of the first touch electrode layer 51 away from the substrate 1, and the extending direction of the first portion of the through-hole intersects the substrate 1 at an acute angle.

[0210] In other examples, as shown in Figure 15, the via formed in the touch insulating layer 7 extending to the first touch electrode layer 51 also includes a second portion that communicates with the first portion, the second portion being closer to the first touch electrode layer 51 than the first portion. The extending direction of the second portion of the via intersects the extending direction of the first portion of the via.

[0211] As shown in Figure 15, the portion of the second touch electrode layer 52 that passes through the touch insulating layer 7 includes a first sub-segment and a second sub-segment connected together. The second sub-segment is closer to the first touch electrode layer 51 than the first sub-segment, and the second sub-segment is in contact with the first touch electrode layer 51. The extension directions of the first sub-segment and the second sub-segment intersect to form a zigzag shape, and the dimension of the second sub-segment along the first direction X is larger than the dimension of the first sub-segment along the first direction X.

[0212] In this way, compared to the second touch electrode layer 52 being connected to the first touch electrode layer 51 through the first sub-segment, the second touch electrode layer 52 being connected to the first touch electrode layer 51 through the second sub-segment increases the contact area between the second touch electrode layer 52 and the first touch electrode layer 51, thereby improving the connection reliability between the second touch electrode layer 52 and the first touch electrode layer 51.

[0213] Based on any of the above embodiments, in the display panel 10, the encapsulation structure 9 can be a single-layer encapsulation or a multi-layer encapsulation.

[0214] For example, when the packaging structure 9 is a single-layer package, as shown in Figure 13, the packaging structure 9 can be an inorganic packaging layer formed using CVD (Chemical Vapor Deposition), PECVD (Plasma Enhanced Chemical Vapor Deposition), or ALD (Atomic Layer Deposition) processes.

[0215] For example, in the case of a multilayer package structure 9, as shown in Figure 16, the package structure 9 includes a first package layer 91, a second package layer 92 and a third package layer 93 stacked sequentially along the direction away from the substrate 1.

[0216] Exemplarily, the first encapsulation layer 91 may have a single-layer structure or a stacked structure. The first encapsulation layer 91 includes, but is not limited to, at least one of silicon nitride, silicon oxide, silicon oxide nitride, aluminum oxide, and titanium oxide. This is merely illustrative and the disclosure is not limited thereto.

[0217] It is understood that when the first encapsulation layer 91 is a stacked structure, the first encapsulation layer 91 can be a stacked structure of aluminum oxide, silicon nitride and aluminum oxide film layers; or, the first encapsulation layer 91 can be a stacked structure of titanium oxide, silicon oxide nitride and titanium oxide film layers.

[0218] Exemplarily, the third encapsulation layer 93 may have a single-layer structure or a stacked structure. The material of the third encapsulation layer 93 includes, but is not limited to, any one of silicon nitride, silicon oxide, silicon oxide nitride, aluminum oxide, and titanium oxide. This is merely illustrative and the disclosure is not limited thereto.

[0219] It is understandable that when the third encapsulation layer 93 adopts a stacked structure design, the third encapsulation layer 93 can be a stacked aluminum oxide, silicon nitride and aluminum oxide film layer structure; the third encapsulation layer 93 can also be a stacked titanium oxide, silicon nitride and titanium oxide film layer structure.

[0220] The first encapsulation layer 91 and the third encapsulation layer 93 can be inorganic encapsulation layers formed using CVD, PECVD, or ALD processes.

[0221] For example, the material of the second encapsulation layer 92 includes, but is not limited to, at least one polymer such as acrylates, epoxy, or polyurethane. The second encapsulation layer 92 may be an organic encapsulation layer formed using IJP (Ink Jet Printing), screen printing, flash evaporation, PECVD, or PEALD processes.

[0222] In some embodiments, as shown in FIG16, the display panel 10 includes a back plate (BP), the back plate (BP) including a substrate 1, and an active layer (AL), at least one gate metal layer (G), and at least one source / drain metal layer (SD) sequentially disposed in a direction away from the substrate 1.

[0223] Exemplary examples show that the active layer AL is made of amorphous silicon, monocrystalline silicon, polycrystalline silicon, or metal oxide semiconductor materials. For example, the active layer AL material includes indium gallium zinc oxide (IGZO) and zinc oxide (ZnO). This is merely an illustrative example of some possible embodiments of the present disclosure and is not intended to limit the scope of the disclosure.

[0224] For example, substrate 1 may be a single-layer substrate including one layer of substrate material, or a composite substrate including at least two layers of substrate material stacked together; the substrate material may be a rigid material or a flexible material.

[0225] Rigid substrate materials include, but are not limited to, rigid glass, quartz, plastics, or PMMA (Polymethyl methacrylate). Flexible substrate materials include, but are not limited to, flexible glass, FPC, PI (Polyimide), PC (Polycarbonate), PET (Polyethylene terephthalate), or PEN (Polyethylene naphthalate dimethyl methacrylate).

[0226] Accordingly, substrate 1 can be a rigid substrate or a flexible substrate. A rigid substrate can consist of one or more layers of rigid substrate material, or it can consist of at least one layer of rigid substrate material and at least one layer of flexible substrate material stacked together. Correspondingly, display panel 10 can be a rigid display panel or a flexible display panel.

[0227] In some embodiments, as shown in FIG16, the backplane BP further includes a buffer layer disposed on the substrate 1, the buffer layer being located between the gate metal layer G closest to the substrate 1 and the substrate 1.

[0228] The buffer layer can alleviate lattice mismatch and differences in thermal expansion coefficients between different materials, and also provides chemical isolation, blocks defects, regulates electronic structure, and provides mechanical support. The substrate 1 is configured to support the film structure on the display panel 10, such as the gate metal layer G and source / drain metal layers SD shown in Figure 3. Placing a buffer layer between the substrate 1 and the gate metal layer G closest to the substrate 1 enhances the support effect of the substrate 1 on the film structure disposed on the substrate 1. Simultaneously, it helps to match the physical properties between the substrate 1 and the gate metal layer G, thereby improving the stability of the bonding between the gate metal layer G and the substrate 1 and reducing stress or defect problems that may be caused by material mismatch between the substrate 1 and the gate metal layer G.

[0229] In some embodiments, as shown in FIG16, the backplane BP further includes a barrier layer disposed on the substrate 1, the barrier layer being located between the gate metal layer G closest to the substrate 1 and the substrate 1.

[0230] A barrier layer can block the diffusion of elements between different materials. A barrier layer placed between the substrate 1 and the gate metal layer G closest to the substrate 1 can protect the gate metal layer G and prevent adverse reactions or physical damage between the gate metal layer G and the substrate 1.

[0231] When the display panel 10 includes a buffer layer and a barrier layer, the buffer layer and the barrier layer can be two contacting film layers; or, the buffer layer and the barrier layer can be integrated in the same film layer structure to form a multifunctional layer (such as the BL layer shown in FIG16), thereby achieving the purpose of simplifying the process and reducing costs.

[0232] In some embodiments, as shown in FIG16, the display panel 10 further includes a gate insulating layer GI.

[0233] In the case where the display panel 10 includes multiple (two or more) gate metal layers G, an insulating layer GI is provided on the adjacent gate metal layers G to separate the two adjacent gate metal layers G.

[0234] Based on this, in some examples, the second insulating layer GI between two adjacent gate metal layers G has a through hole, and the two ends of the through hole are respectively connected to the part between the two adjacent gate metal layers G that needs to be connected. The part between the two adjacent gate metal layers G that needs to be connected is connected through the through hole on the second insulating layer GI between them.

[0235] As shown in Figure 16, the first gate insulating layer GI1 and the second gate insulating layer GI2 are both gate insulating layers G. The gate metal layer G is located on the side of the active layer AL away from the substrate 1. The gate metal layer G closest to the substrate 1 is adjacent to the active layer AL, and a gate insulating layer GI is disposed between the adjacent gate metal layer G and the active layer AL.

[0236] As shown in Figure 16, the active layer AL is disposed on one side of the substrate 1, and the first gate insulating layer GI1 is disposed on the side of the active layer AL away from the substrate 1 and covers the active layer AL. The gate metal layer G is disposed on the side of the first gate insulating layer GI1 away from the substrate 1, and the second gate insulating layer GI2 is disposed on the side of the gate metal layer G away from the substrate 1 and covers the gate metal layer G.

[0237] In some embodiments, the display panel 10 further includes an interlayer dielectric (ILD) disposed between adjacent gate metal layers G and source / drain metal layers SD.

[0238] Referring to Figure 16, the interlayer dielectric layer ILD can be disposed between the second gate insulating layer GI2 and the source / drain metal layer SD.

[0239] In some embodiments, as shown in FIG16, the display panel 10 further includes a planar layer (PLN).

[0240] When the display panel 10 includes one or more (two or more) source / drain metal layers SD, a planarization layer PLN is provided on the side of the source / drain metal layer SD furthest from the substrate 1 that is furthest from the substrate 1. When the display panel 10 includes multiple source / drain metal layers SD, a planarization layer PLN may also be provided between adjacent source / drain metal layers SD to separate the two adjacent source / drain metal layers SD.

[0241] Based on this, in some examples, the planarization layer PLN between two adjacent source / drain metal layers SD has a via, with both ends of the via connected to the parts that need to be connected between the two adjacent source / drain metal layers SD. The parts that need to be connected between the two adjacent source / drain metal layers SD are connected through the via on the planarization layer PLN between them.

[0242] In the display panel 10, the planarization layer PLN is provided to separate the parts that need to be electrically isolated in the two adjacent source and drain metal layers SD. On the other hand, it is to ensure that the surface of the back plate BP furthest from the substrate 1 can obtain better flatness, so as to ensure the light-emitting display effect of the light-emitting device 2 formed on the back plate BP.

[0243] It should be noted that, in order to clearly show the specific structure and arrangement of the support portion 4 and the touch electrode layer 5 in the display panel 10, the accompanying drawings referred to in the above-described embodiments only show the substrate 1, and do not show the other structures in the back plate BP. It can be understood that in the actual display panel 10, the back plate BP includes other film layer structures disposed on the substrate 1 in addition to the substrate 1, such as the gate metal layer G and the source / drain metal layer SD.

[0244] In some embodiments, as shown in FIG16, the display panel 10 further includes a plurality of pixel circuits corresponding to a plurality of light-emitting devices 2, each pixel circuit including but not limited to at least one transistor TFT (e.g., thin film transistor) and capacitor.

[0245] In some examples, as shown in Figure 16, the transistor TFT includes a semiconductor pattern, a source, a drain, and a gate. The semiconductor pattern of the transistor TFT is located in the active layer AL, the gate of the transistor TFT is located in the gate metal layer G, and the source and drain of the transistor TFT are located in the source-drain conductive layer SD.

[0246] For example, the overlapping portion of the gate metal layer G and the active layer AL forms a transistor TFT. The gate metal layer G includes the gate of each transistor TFT and multiple gate scan lines.

[0247] Exemplarily, the materials of the gate metal layer G and the source / drain conductive layer SD include metals, including but not limited to at least one of aluminum, copper, molybdenum or gold, and this disclosure is not limited thereto.

[0248] The gate metal layer G and the source / drain conductive layer SD can be a single-layer structure or a stacked structure. For example, when the source / drain conductive layer SD is a stacked structure, it may include molybdenum / copper / molybdenum metal layers stacked sequentially.

[0249] This document is provided as an illustrative example of some possible embodiments of the present disclosure and is not intended to limit the scope of the disclosure.

[0250] In some embodiments, as shown in FIG16, the light-emitting device 2 includes a first electrode 21, a light-emitting part 22, and a second electrode 23 arranged sequentially in a direction away from the back plate BP.

[0251] One of the first electrode 21 and the second electrode 23 is an anode layer and the other is a cathode layer. The first electrode 21 and the second electrode 23 can be subjected to voltages of different magnitudes, generating an electric field between them, thereby causing the light-emitting part 22 disposed between them to emit light under the action of the electric field.

[0252] Given that the relative magnitudes of the voltages on the first electrode 21 and the second electrode 23 are determined, the voltages applied to the multiple first electrodes 21 in the first electrode 21 can be controlled individually, thereby achieving individual control of the luminous brightness of the light-emitting part 22 corresponding to the first electrode 21.

[0253] In some examples, the material of the first electrode 21 includes a metal or metal compound, such as at least one of gold, silver, platinum or magnesium-silver alloy.

[0254] In other examples, the material of the first electrode 21 includes a transparent conductive material, such as at least one of ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), or other transparent conductive materials.

[0255] For example, the first electrode 21 may be formed using processes such as evaporation, sputtering, or ALD. The first electrode 21 may be a single-layer structure or a multilayer structure.

[0256] In some examples, the material of the second electrode 23 includes, but is not limited to, a magnesium-silver alloy.

[0257] In other examples, the second electrode 23 is made of a transparent conductive material, including but not limited to at least one of ITO, IZO or other transparent conductive materials.

[0258] For example, the second electrode 23 is formed using processes such as evaporation, sputtering, or ALD. The second electrode 23 can be a single-layer structure or a multilayer structure.

[0259] In some embodiments, the light-emitting part 22 adopts a single-layer structure, and the light-emitting part 22 includes an EML (Emitting Material Layer).

[0260] In other embodiments, the light-emitting part 22 adopts a stacked structure. In addition to the EML layer, the light-emitting part 22 also includes at least one of EIL (Election Injection Layer), ETL (Election Transporting Layer), HBL (Hole Block Layer), EBL (Electron Block Layer), HTL (Hole Transporting Layer), and HIL (Hole Injection Layer).

[0261] For example, EBL, HTL, and HIL are disposed between EML and the first electrode 21, with EBL being closer to EML than HTL and HIL.

[0262] For example, EIL, ETL and HBL are disposed between EML and the second electrode 23, with HBL being closer to EML than EIL and ETL.

[0263] For example, the light-emitting part 22 is formed by vapor deposition or inkjet printing process.

[0264] This document is provided as an illustrative example of some possible embodiments of the present disclosure and is not intended to limit the scope of the disclosure.

[0265] In some embodiments, as shown in FIG16, each second opening K2 of the pixel defining layer PDL is respectively disposed corresponding to a first electrode 21, and the second opening K2 exposes at least a portion of the corresponding first electrode 21; at least a portion of each light-emitting part 22 is located within a second opening K2 and at least partially overlaps with a first electrode 21.

[0266] In some embodiments, as shown in FIG16, the plurality of first electrodes 21 may be a plurality of independent electrodes separated from each other, or the plurality of first electrodes 21 may be connected to each other to form a whole electrode layer. In the case where the plurality of first electrodes 21 are a whole first electrode layer, the first electrode 21 refers to the portion of the second electrode layer corresponding to the light-emitting portion 22.

[0267] In some embodiments, as shown in FIG16, the plurality of second electrodes 23 may be multiple independent electrodes separated from each other, or the plurality of second electrodes 23 may be connected to each other to form a whole electrode layer. In the case where the plurality of second electrodes 23 are a whole electrode layer, the second electrode 23 refers to the portion of the second electrode layer corresponding to the light-emitting portion 22.

[0268] In some embodiments, as shown in FIG16, the display panel 10 further includes spacers D. Spacers D are disposed on the pixel defining layer BPDL. Spacers D may include ball spacers (BS) and / or post spacers (PS).

[0269] In the fabrication process of the display panel 10, for example, the light-emitting layer is prepared by evaporation of a mask. By setting the spacer D, the mask can be supported during the evaporation process to maintain a set distance between the mask and the substrate 1. This ensures the quality of the light-emitting layer formed by evaporation and also prevents the mask from contacting the film structure on the substrate 1 and causing damage to the film.

[0270] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

A display panel, comprising: Substrate; A light-emitting device layer, comprising a plurality of light-emitting devices, is disposed on one side of the substrate; A light filtering structure is disposed on the side of the light-emitting device layer away from the substrate; the light filtering structure includes a black matrix and a plurality of color filter parts, the black matrix defining a plurality of first openings, and each color filter part being disposed within one of the first openings; In a projection onto the substrate, each of the light-emitting devices is located within the area of ​​one of the first openings; At least one support portion is disposed between the light-emitting device layer and the filter structure; In the orthographic projection onto the substrate, at least the edge portion of the support overlaps with the black matrix; the thickness of at least the edge portion of the support gradually decreases along a first direction; the first direction is the direction from the center of the support to the boundary of the support, and parallel to the line connecting the centers of two adjacent light-emitting devices; At least one touch electrode layer is disposed between the light-emitting device layer and the filter structure; at least a portion of one of the at least one touch electrode layers is located on the edge portion of the support portion. The display panel according to claim 1, wherein, The support portion includes a first surface, the first surface including a preset portion; in a positive projection onto the substrate, the preset portion overlaps with the black matrix; In the first cross section of the display panel, the extension line of the preset portion or the tangent line of the preset portion at multiple points intersects the substrate at an acute angle; the first cross section is along the line connecting the centers of two adjacent light-emitting devices and is perpendicular to the substrate. The display panel according to claim 1 or 2, wherein, In the orthographic projection onto the substrate, the support portion overlaps with the black matrix; The thickness of at least the edge portion of the support gradually decreases along the direction from the black matrix toward the adjacent color filter portion. The display panel according to claim 3, wherein, The support includes a top surface, a bottom surface, and two side surfaces. The top surface and the bottom surface are disposed opposite to each other in the thickness direction of the substrate, and the top surface is farther away from the substrate than the bottom surface. The two side surfaces are disposed opposite to each other in the first direction. The dimension of the top surface along the first direction is smaller than the dimension of the bottom surface along the first direction, and both sides are inclined relative to the bottom surface; The edge portion of the support includes the portions of the two sides of the support corresponding to each other in the thickness direction of the substrate. The display panel according to claim 3, wherein, The support portion includes an arc surface and a bottom surface. The arc surface is farther away from the substrate than the bottom surface. The two ends of the arc surface in the first direction are respectively connected to the two ends of the bottom surface in the first direction. The arc surface bends toward the substrate; The first surface of the support and the preset portion of the first surface are both arc surfaces. The display panel according to any one of claims 3 to 5, wherein, The number of touch electrode layers is one; At least a portion of the touch electrode layer is located on the surface of the edge portion of the support. The display panel according to any one of claims 3 to 5, wherein, The at least one touch electrode layer includes a first touch electrode layer and a second touch electrode layer, wherein the first touch electrode layer is closer to the substrate than the second touch electrode layer; At least a portion of the first touch electrode layer is located on the side of the support portion near the substrate, and at least a portion of the second touch electrode layer is located on the surface of the edge portion of the support portion. The display panel according to claim 7, wherein, In the region between two adjacent light-emitting devices, the first touch electrode layer extends from opposite ends in the first direction relative to the opposite side boundaries of the support portion in the first direction. The two ends of the second touch electrode layer opposite each other in the first direction are respectively connected to the two ends of the first touch electrode layer opposite each other in the first direction. The display panel according to any one of claims 3 to 8, further comprising: Multiple optical structures are disposed in the same layer as the support portion and are made of the same material; In a positive projection onto the substrate, each of the optical structures overlaps with one of the light-emitting devices and one of the color filters. The display panel according to any one of claims 3 to 8, further comprising: Multiple optical structures are located on the side of the filter structure away from the substrate; In a positive projection onto the substrate, each of the optical structures overlaps with one of the light-emitting devices and one of the color filters. The display panel according to any one of claims 3 to 10, wherein, The orthographic projection of the support portion onto the substrate lies within the orthographic projection range of the black matrix onto the substrate. The display panel according to claim 1 or 2, further comprising: Multiple optical structures are located between the light-emitting device layer and the filter structure; In a projection onto the substrate, each of the optical structures overlaps with one of the light-emitting devices and one of the color filters; The thickness of at least the edge portion of the optical structure gradually decreases along the direction from the color filter portion toward the adjacent black matrix; the edge portion of the optical structure serves as the support portion. The display panel according to claim 12, wherein, The edge portion of the optical structure has an arc surface away from the substrate, and the arc surface bends toward the substrate. The display panel according to claim 12 or 13, wherein, The number of touch electrode layers is one; Between two adjacent optical structures, the touch electrode layer rises at opposite ends in the first direction to the edge portions of the two adjacent optical structures. The display panel according to claim 12 or 13, wherein, The at least one touch electrode layer includes a first touch electrode layer and a second touch electrode layer, wherein the first touch electrode layer is closer to the substrate than the second touch electrode layer; Between two adjacent optical structures, the first touch electrode layer rises at opposite ends in the first direction to the edge portions of the two adjacent optical structures. The display panel according to claim 15, further comprising: A touch insulating layer is disposed between the first touch electrode layer and the second touch electrode layer, and the second touch electrode layer passes through the touch insulating layer and is connected to the first touch electrode layer. The display panel according to any one of claims 14 to 16, wherein, There is a gap between two adjacent optical structures, and a portion of the touch electrode layer or the first touch electrode layer is located within the gap. The display panel according to any one of claims 1 to 17, the display panel further comprising: A touch protection layer is disposed on the side of the filter structure near the substrate and covers the at least one touch electrode layer and the support portion. The display panel according to any one of claims 1 to 18, the display panel further comprising: An encapsulation structure is disposed between the light-emitting device layer and the at least one touch electrode layer; The support portion is located on the side of the packaging structure away from the substrate. A display device, comprising: The display panel as described in any one of claims 1 to 19; and, The driving circuit is electrically connected to the display panel.

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