Display panel and display device

Abstract

The embodiment of the utility model provides a display panel and a display device, relates to the technical field of display, and is used for improving the light emitting efficiency of the display panel. The display panel comprises a substrate, a light-emitting structure layer, and a filter layer, a first optical structure layer, a second optical structure layer and a third optical structure layer which are stacked on one side, far away from the substrate, of the light-emitting structure layer; the light-emitting structure layer is arranged on the substrate and comprises a plurality of light-emitting units, the light filtering layer comprises at least one light filtering unit, and the light filtering unit is arranged on the surface of the first optical structure layer; the first optical structure layer comprises a first plane and a first reflecting surface; the refractive index of the first optical structure layer is different from that of the corresponding filtering unit; the second optical structure layer comprises a second plane and a second reflecting surface which are connected; the refractive index of the second optical structure layer is different from that of the third optical structure layer; in the thickness direction of the display panel, the second reflecting surface is overlapped with the light filtering unit.

Description

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] OLED (Organic Light Emitting Diode) display panels have advantages such as self-illumination, low driving voltage, high luminous efficiency, thinness, wide viewing angle, fast response speed, and flexible display, and have gradually become one of the mainstream products in the display field. Utility Model Content

[0003] The purpose of this disclosure is to provide a display panel and a display device for improving the light emission efficiency of the display panel.

[0004] To achieve the above objectives, the embodiments of this disclosure provide the following technical solutions:

[0005] On one hand, a display panel is provided. The display panel includes a substrate, a light-emitting structure layer, and multiple layers of a filter layer, a first optical structure layer, a second optical structure layer, and a third optical structure layer stacked on the side of the light-emitting structure layer away from the substrate. The light-emitting structure layer is disposed on the substrate and includes a plurality of light-emitting units. The filter layer includes at least one filter unit, which is disposed on the surface of the first optical structure layer and in contact with the first optical structure layer; wherein, the first optical structure layer includes a first plane and a first reflective surface, the first reflective surface intersecting the first plane and the plane on which the substrate is located, respectively, and the filter unit covers the first reflective surface; the refractive index of the first optical structure layer is different from the refractive index of the corresponding filter unit; the second optical structure layer includes a second plane and a second reflective surface that are adjacent to each other, the second reflective surface intersecting the second plane and the plane on which the substrate is located, respectively, and the third optical structure layer covers the second reflective surface; the refractive index of the second optical structure layer and the refractive index of the third optical structure layer are different; along the thickness direction of the display panel, the second reflective surface overlaps with the filter unit.

[0006] The above-mentioned first reflective surface and second reflective surface are provided, and the second reflective surface is far away from the substrate relative to the first reflective surface. Under the action of the first reflective surface and the second reflective surface, the light emitted by the light-emitting unit can be reflected or refracted along the first reflective surface and the second reflective surface, respectively. By changing the light emission path of the light-emitting unit, the amount of light emitted by the light-emitting unit is increased, thereby improving the light emission efficiency of the display panel at a wide viewing angle.

[0007] In some embodiments, the first optical structure layer includes a first opening, which is disposed corresponding to the light-emitting unit, and the boundary of the first opening is the first reflective surface; the filter unit includes a first filter unit, and a portion of the first filter unit is located within the first opening.

[0008] In some embodiments, along the thickness direction of the display panel, the first filter unit includes a first part and a second part connected together, and both the first part and the second part extend along a first direction, which is perpendicular to the thickness direction of the display panel. The first part is located in the first opening and contacts the first reflective surface, and the two ends of the second part in the first direction are in contact with the first plane.

[0009] In some embodiments, the second optical structure layer and the third optical structure layer are located on the side of the first filter unit away from the substrate, and the third optical structure layer is away from the substrate relative to the second optical structure layer; the second optical structure layer includes a first protrusion along the direction away from the substrate, the sidewall of the first protrusion is the second reflective surface, the first protrusion overlaps with the first filter unit in the thickness direction of the display panel, and the third optical structure layer covers the first protrusion.

[0010] In some embodiments, the average size of the first boss in the first direction is greater than the average size of the first opening in the first direction.

[0011] In some embodiments, the refractive index of the second optical structure layer is greater than the refractive index of the third optical structure layer.

[0012] In some embodiments, the second optical structure layer and the third optical structure layer are located on the side of the first filter unit away from the substrate, and the third optical structure layer is away from the substrate relative to the second optical structure layer; the second optical structure layer includes a second opening, the boundary of the second opening is the second reflective surface, the second opening overlaps with the first filter unit in the thickness direction of the display panel, and a portion of the third optical structure layer is located within the second opening.

[0013] In some embodiments, the average size of the first opening in the first direction is smaller than the average size of the second opening in the first direction.

[0014] In some embodiments, the refractive index of the second optical structure layer is less than that of the third optical structure layer.

[0015] In some embodiments, the refractive index of the first optical structure layer is less than the refractive index of the corresponding first filter unit.

[0016] In some embodiments, the first optical structure layer includes a second protrusion along a direction away from the substrate, the sidewall of the second protrusion being the first reflective surface, the filter unit including a second filter unit covering the second protrusion, and the light-emitting unit corresponding to the second filter unit being located within the orthogonal projection of the second protrusion onto the substrate.

[0017] In some embodiments, the second optical structure layer and the third optical structure layer are located on the side of the second filter unit away from the substrate, and the third optical structure layer is away from the substrate relative to the second optical structure layer; the third optical structure layer is located on the side of the second optical structure layer away from the substrate, the second optical structure layer includes a third protrusion, the sidewall of the third protrusion is the second reflective surface, the third protrusion overlaps with the second filter unit in the thickness direction of the display panel, and the third optical structure layer covers the third protrusion.

[0018] In some embodiments, the orthographic projection of the second protrusion onto the substrate is located within the orthographic projection of the third protrusion onto the substrate.

[0019] In some embodiments, the second optical structure layer and the third optical structure layer are located on the side of the second filter unit away from the substrate, and the third optical structure layer is away from the substrate relative to the second optical structure layer; the second optical structure layer includes a first pattern, the first pattern is in contact with the second filter unit, the first pattern and the second filter unit are overlapped in the thickness direction of the display panel, and the first pattern covers the second filter unit, and the third optical structure layer covers the first pattern.

[0020] In some embodiments, the refractive index of the second optical structure layer is greater than the refractive index of the third optical structure layer.

[0021] In some embodiments, the average size of the second boss in the first direction is smaller than the average size of the third opening in the first direction, where the first direction is perpendicular to the thickness direction of the display panel.

[0022] In some embodiments, the refractive index of the second optical structure layer is less than that of the third optical structure layer.

[0023] In some embodiments, the refractive index of the first optical structure layer is greater than the refractive index of the corresponding second filter unit.

[0024] In some embodiments, the touch structure layer includes at least one conductive layer, the conductive layer including a plurality of conductive patterns, the conductive patterns being located on the same layer as the filter unit, and the conductive patterns and the orthographic projection of the filter unit on the substrate not overlapping.

[0025] On the other hand, a display panel is provided, including a substrate, a light-emitting structure layer, and multiple layers of a filter layer, a first optical structure layer, and a second optical structure layer stacked on the side of the light-emitting structure layer away from the substrate. The filter layer includes at least one filter unit disposed on the surface of the first optical structure layer and in contact with it. The first optical structure layer includes a first plane and a first reflective surface, the first reflective surface intersecting both the first plane and the plane containing the substrate, and the filter unit covering the first reflective surface. The refractive index of the first optical structure layer is different from the refractive index of the corresponding filter unit. The second optical structure layer is located on the side of the first optical structure layer closer to the substrate, and includes a second plane and a second reflective surface that intersect both the second plane and the plane containing the substrate, and the first optical structure layer covering the second reflective surface. The refractive index of the second optical structure layer is different from the refractive index of the first optical structure layer. Along the thickness direction of the display panel, the second reflective surface overlaps with the filter unit.

[0026] In some embodiments, the first optical structure layer includes a first opening, which is disposed corresponding to the light-emitting unit, and the boundary of the first opening is the first reflective surface; the filter unit includes a first filter unit, and a portion of the first filter unit is located within the first opening.

[0027] In some embodiments, the second optical structure layer includes a first protrusion that contacts the first filter unit; the sidewall of the first protrusion is the second reflective surface along a direction away from the substrate, and the first protrusion and the first filter unit overlap in the thickness direction of the display panel.

[0028] In some embodiments, the average size of the first boss in the first direction is greater than the average size of the first opening in the first direction, wherein the first direction is perpendicular to the thickness direction of the display panel.

[0029] In some embodiments, the refractive index of the first optical structure layer is less than the refractive index of the first filter unit, and the refractive index of the first optical structure layer is less than the refractive index of the second optical structure layer.

[0030] In some embodiments, the first optical structure layer includes a second protrusion along a direction away from the substrate, the sidewall of the second protrusion being the first reflective surface, the filter unit including a second filter unit covering the second protrusion, and the light-emitting unit corresponding to the second filter unit being located within the orthogonal projection of the second protrusion onto the substrate.

[0031] In some embodiments, the second optical structure layer includes a third opening, which overlaps with the second filter unit in the thickness direction of the display panel, and a portion of the first optical structure layer is located within the third opening.

[0032] In some embodiments, the average size of the second boss in the first direction is smaller than the average size of the third opening in the first direction, where the first direction is perpendicular to the thickness direction of the display panel.

[0033] In some embodiments, the refractive index of the first optical structure layer is greater than the refractive index of the second filter unit, and the refractive index of the first optical structure layer is greater than the refractive index of the second optical structure layer.

[0034] In some embodiments, the system further includes: a touch structure layer, the touch structure layer including at least one conductive layer, the conductive layer being disposed on the side of the second optical structure layer near or away from the substrate, the conductive layer including a plurality of conductive patterns, wherein the orthographic projection of each of the plurality of conductive patterns on the substrate does not overlap with the orthographic projection of the filter unit on the substrate.

[0035] In another aspect, a display device is provided, comprising: a display panel as described in any of the above embodiments.

[0036] The above-described display device has the same structure and beneficial technical effects as the display panel provided in some of the above embodiments, and will not be described again here. Attached Figure Description

[0037] 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.

[0038] Figure 1 This is a cross-sectional structural diagram of a display device provided according to some embodiments of the present disclosure;

[0039] Figure 2A This is a cross-sectional structural diagram of a display panel provided according to some embodiments of the present disclosure;

[0040] Figure 2B This is another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0041] Figure 2C This is yet another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0042] Figure 3A This is a cross-sectional structural diagram of a display panel provided according to some embodiments of the present disclosure;

[0043] Figure 3B This is another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0044] Figure 3C This is yet another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0045] Figure 4A This is a cross-sectional structural diagram of a display panel provided according to some embodiments of the present disclosure;

[0046] Figure 4B This is another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0047] Figure 4C This is yet another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0048] Figure 5A This is a cross-sectional structural diagram of a display panel provided according to some embodiments of the present disclosure;

[0049] Figure 5B This is another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0050] Figure 5C This is yet another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0051] Figure 6A This is a cross-sectional structural diagram of a display panel provided according to some embodiments of the present disclosure;

[0052] Figure 6B This is another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0053] Figure 6CThis is yet another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0054] Figure 7 This is another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0055] Figure 8 This is yet another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0056] Figure 9 This is another cross-sectional view of a display panel provided according to some embodiments of the present disclosure;

[0057] Figure 10 This is a plan view of a display panel provided according to some embodiments of the present disclosure;

[0058] Figure 11 According to some embodiments of this disclosure Figure 10 The provided enlarged structural diagram of the display panel at point C;

[0059] Figures 12A to 12H This is a planar structural diagram of the film layer of a display panel provided according to some embodiments of the present disclosure. Detailed Implementation

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] "At least one of A, B and C" has the same meaning as "at least one of B or C", and includes 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.

[0065] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0066] As used herein, depending on the context, the term “if” may optionally be interpreted as meaning “when…” or “in the event of…” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrase “if determination…” or “if detection [the stated condition or event]” may optionally be interpreted as meaning “in the event of determination…” or “in response to determination…” or “in response to detection [the stated condition or event]” or “in response to detection [the stated condition or event].”

[0067] 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.

[0068] 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.

[0069] 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).

[0070] 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.

[0071] 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.

[0072] 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.

[0073] With the development of display technology, Flexible Multiple Layer on Cell (FMLOC) technology is gradually being applied to Organic Light Emitting Diode (OLED) display devices. FMLOC integrates the display structure and touch structure together, which can meet the development trend of display technology to be thin, foldable, and have narrow bezels.

[0074] Currently, in organic FMLOC products, the light generated by organic light-emitting diodes will undergo total internal reflection during the process of entering the air due to the mismatch of the refractive index of the materials, which greatly limits the light extraction efficiency of the light-emitting device.

[0075] Based on this, some embodiments of the present disclosure provide a display panel and a display device that can improve the light extraction efficiency of organic FMLOC products and simultaneously improve the brightness of the display device by using patterned optical film layers without increasing the number of photomasks.

[0076] For ease of description below, an XYZ coordinate system is established. The third direction Z is perpendicular to the plane where the light-emitting substrate is located, the XY plane is perpendicular to the Z direction, and the first direction X intersects the second direction Y. For example, the first direction X and the second direction Y are perpendicular to each other, the first direction X is the row direction X, and the second direction Y is the column direction Y.

[0077] It should be noted that, for example, B1 / B0 in the accompanying drawings of this disclosure indicates that region B1 belongs to region B0, and other similar reference numerals in the accompanying drawings also follow the above explanation.

[0078] The following provides a detailed description of the display panel and display device provided in this disclosure.

[0079] like Figure 1 As shown, some embodiments of this disclosure provide a display device 1000.

[0080] Exemplarily, the aforementioned display device 1000 can be any device that displays images, whether moving (e.g., video) or fixed (e.g., still images), and whether text or images. More specifically, the embodiments described are contemplated to be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, television (TV) products, wireless devices, personal digital assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging and aesthetic structures (e.g., displays of images of a piece of jewelry), etc. Figure 1 The following is an illustration using the display device 1000 as an example of a mobile phone product.

[0081] In terms of its form, the display device 1000 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 1000 can be rectangular or circular, etc. This disclosure does not impose any limitations in this regard, and adaptive designs can be made according to actual needs.

[0082] In some embodiments, the display device 1000 includes a display panel 100 and a driving circuit, and the display panel 100 and the driving circuit are connected.

[0083] For example, the display device 1000 may further include a frame and other electronic components, and the display panel 100 may be disposed within the frame. The driving circuit is configured to send driving signals to the display panel 100, such as display driving signals and / or touch driving signals. The display panel 100 displays images and / or performs touch operations under the drive of the driving circuit.

[0084] For example, the driving circuit may be disposed on a circuit board, including but not limited to a printed circuit board (PCB) or a flexible printed circuit (FPC).

[0085] like Figure 2AAs shown, some embodiments of this disclosure provide a display panel 100. The display panel 100 includes a substrate 1, a light-emitting structure layer 2, a filter layer 3, a first optical structure layer 4, a second optical structure layer 5, and a third optical structure layer 6 stacked on the side of the light-emitting structure layer 2 away from the substrate 1. The light-emitting structure layer 2 is disposed on the substrate 1 and includes a plurality of light-emitting units 21; the filter layer 3 includes at least one filter unit 31, wherein the filter unit 31 is disposed on the surface of the first optical structure layer 4 and is in contact with the first optical structure layer 4.

[0086] The first optical structure layer 4 includes a first plane 41 and a first reflective surface 42. The first reflective surface 42 intersects the first plane 41 and the plane containing the substrate 1, respectively. The filter unit 31 covers the first reflective surface 42. The refractive index of the first optical structure layer 4 is different from the refractive index of the corresponding filter unit 31.

[0087] The second optical structure layer 5 includes a second plane 51 and a second reflective surface 52 that are in contact with each other. The second reflective surface 52 intersects with the plane of the second plane 51 and the plane of the substrate 1, respectively. The third optical structure layer 6 covers the second reflective surface 52. The refractive index of the second optical structure layer 5 and the refractive index of the third optical structure layer 6 are different. Along the thickness direction of the display panel 100, the second reflective surface 52 overlaps with the filter unit 31.

[0088] For example, the filter layer 3 includes at least one filter unit 31, that is, the filter layer 3 may include one filter unit 31 or multiple filter units 31. It should be noted that the filter layer 3 may be provided in multiple layers, and each filter layer 3 may include one filter unit 31 or multiple filter units 31.

[0089] For example, the light-emitting structure layer 2 includes a plurality of light-emitting units 21, which may be organic light-emitting diodes. In the display panel 100, a filter unit 31 is provided on the light-emitting side of each light-emitting unit 21. The light emitted by the light-emitting unit 21 is made to appear as a specific color through the filter unit 31, thereby realizing the full-color display of the display panel 100.

[0090] For example, each light-emitting unit 21 includes a first electrode layer 201, a light-emitting layer 202, and a second electrode layer 203 sequentially stacked along a direction away from the substrate 1.

[0091] In some embodiments, the first electrode layer 201 includes a plurality of first electrodes spaced apart, wherein, exemplarily, the first electrodes are anodes.

[0092] The electrodes in the first electrode layer 201 are semi-transparent and semi-reflective electrodes, and the electrodes in the second electrode layer 203 are reflective electrodes. In this case, the display panel 100 is a top-emitting display panel. In other embodiments, the electrodes in the first electrode layer 201 are reflective electrodes, and the electrodes in the second electrode layer 203 are semi-transparent and semi-reflective electrodes. In this case, the display panel 100 is a bottom-emitting display panel. The embodiments disclosed herein do not specifically limit this type of display panel.

[0093] The light-emitting layer 202 includes an organic light-emitting layer. The organic light-emitting layer includes multiple organic light-emitting units. When the multiple light-emitting devices are of different colors, the organic light-emitting units of the different colored light-emitting devices are arranged independently. When the multiple light-emitting devices are of the same color, such as white or blue light-emitting devices, the organic light-emitting units of the multiple light-emitting devices can be connected to form a full-surface structure, or they can be arranged independently.

[0094] The light-emitting layer 202 may further include at least one common layer, which includes a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer. The hole injection layer and / or the hole transport layer may be disposed between the anode and the organic light-emitting layer, and the electron injection layer and / or the electron transport layer may be disposed between the cathode and the organic light-emitting layer. These are not shown in the figures of this embodiment; for details, please refer to the structure of organic light-emitting diode display panels in related technologies. When the light-emitting layer 202 includes one or more of the following: a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer, these layers can be an entire surface structure or can be independently disposed.

[0095] The display panel 100 may further include a pixel defining layer PDL, which is disposed between the first electrode layer 201 and the light-emitting layer 202. The pixel defining layer PDL includes a plurality of openings, at least a portion of each light-emitting layer 202 is located in one opening, and the plurality of openings of the pixel defining layer PDL can define the light-emitting areas of a plurality of light-emitting units 21.

[0096] For example, the filter unit 31 may be a color filter (CF) or a color filter film.

[0097] For example, a filter unit 31 is provided corresponding to a light-emitting unit 21. The filter unit 31 can be a red filter, a blue filter, a green filter, etc. The filter unit 31 makes the light emitted by the light-emitting unit 21 appear as a specific color, thereby realizing full-color display panel 100.

[0098] In the orthographic projection onto the substrate 1, the shape of the filter unit 31 includes at least one of a circle, an ellipse, and a polygon.

[0099] In the display panel 100, the filter units 31 for different filter colors can all have the same shape, or they can be multiple (two or more) of the following irregular shapes: circular, elliptical, polygonal, or otherwise. The specific shape of the filter unit 31 can be adaptively designed according to actual needs. This is an exemplary description of some possible implementations of this disclosure and is not intended to limit this disclosure.

[0100] In this way, the light emitted by the light-emitting unit 21 passes through the light-filtering unit 31 and then shines out. By setting the light-filtering unit 31, the contrast of the display screen 100 can be improved by optimizing the distribution of light and reducing light scattering, making the image clearer and more detailed.

[0101] In some embodiments of this application, a first reflective surface 42 and a second reflective surface 52 are provided, and the second reflective surface 52 is far away from the substrate 1 relative to the first reflective surface 42. Under the action of the first reflective surface 42 and the second reflective surface 52, the light emitted by the light-emitting unit 21 can be reflected or refracted along the first reflective surface 42 and the second reflective surface 52 respectively. By changing the light emission path of the light-emitting unit 21, the amount of light emitted by the light-emitting unit 21 is increased, thereby improving the light emission efficiency of the display panel 100 at a wide viewing angle.

[0102] It should be noted that since the first reflective surface 42 is disposed on the first optical structure layer 4 and the filter unit 31 covers the first reflective surface 42, it can be seen that the first reflective surface 42 and the filter unit 31 are located in different film layers, and the refractive index of the first optical structure layer 4 is different from that of the corresponding filter unit 31. This makes it easier for the light emitted by the light-emitting unit 21 to be reflected or refracted along the first reflective surface 42, thereby changing the light emission direction and improving the light emission efficiency of the display panel 100 at a wide viewing angle. Similarly, the second optical structure layer 5 includes a second reflective surface 52, and the third optical structure layer 6 covers the second reflective surface 52. It can be seen that there is a reflective interface, namely the second reflective surface 52, between the second optical structure layer 5 and the third optical structure layer 6. At this time, the refractive index of the second optical structure layer 5 and the refractive index of the third optical structure layer 6 are set to be different, which makes it easier for the light emitted by the light-emitting unit 21 to be reflected or refracted along the second reflective surface 52. By changing the light emission path of the light-emitting unit 21, the amount of light emitted by the light-emitting unit 21 is increased, thereby improving the light emission efficiency of the display panel 100 at a wide viewing angle.

[0103] For example, the materials of the first optical structure layer 4, the second optical structure layer 5 and the third optical structure layer 6 are organic materials, including but not limited to at least one of photoresist, acrylic or resin.

[0104] In some embodiments, such as Figure 2AAs shown, the first optical structure layer 4 includes a first opening K1, which is correspondingly disposed with the light-emitting unit 21, and the boundary of the first opening K1 is the first reflective surface 42; the filter unit 31 includes a first filter unit 311, and part of the first filter unit 311 is located inside the first opening K1.

[0105] For example, such as Figure 2A As shown, a first opening K1 and a light-emitting unit 21 are overlapped along the thickness direction of the display panel 100. The thickness direction of the display panel 100 refers to the direction perpendicular to the display surface of the display panel 100.

[0106] For example, the orthographic projection of the first opening K1 on the substrate 1 at least partially overlaps with the orthographic projection of the light-emitting unit 21 on the substrate 1. Similarly, the orthographic projection of the first opening K1 on the substrate 1 at least partially overlaps with the orthographic projection of the filter unit 31 on the substrate 1.

[0107] It should be noted that, since the first optical structure layer 4 includes a first reflective surface 42, wherein the first reflective surface 42 intersects with the first plane 41 and the plane containing the substrate 1 respectively, the boundary of the first opening K1 is simultaneously formed by the first reflective surface 42 during the formation of the first opening K1 in the first optical structure layer 4.

[0108] For example, the first opening K1 has a first end K11 and a second end K12 opposite to each other along the thickness direction of the display panel 100, the first end K11 being closer to the substrate 1 than the second end K12; in a positive projection onto the substrate 1, the boundary of the first end K11 is within the range of the boundary of the second end K12.

[0109] In the process of manufacturing the display panel 100, a whole first optical structure layer 4 may be formed first, and then the part of the first optical structure layer 4 corresponding to the location of the first opening K1 may be removed. Specifically, the part of the first optical structure layer 4 corresponding to the location of the first opening K1 may be removed by etching process.

[0110] The first opening K1 formed by the etching process may result in a structure that is larger at one end and smaller at the other, such as... Figure 2A As shown, the size of the end of the first opening K1 furthest from the substrate 1 (the second end K12) is larger than the size of the end of the first opening K1 closest to the substrate 1 (the first end K11). Specifically, the size of the first opening K1 gradually decreases along the direction closest to the substrate 1.

[0111] Thus, when a cross-section is taken of the first optical structure layer 4 along a plane perpendicular to the display surface of the display panel 100, the boundary line forming the first opening K1 in the resulting cross-sectional shape is either a diagonal line or an arc. In the embodiments of this disclosure, the boundary is illustrated using a diagonal line as an example, and the same applies to other openings in the embodiments of this disclosure.

[0112] For example, in the orthographic projection onto the substrate 1, the shape of the first opening K1 includes at least one of a circle, an ellipse, and a polygon. In the display panel 100, the multiple first openings K1 defined by the first optical structure layer 4 may all have the same shape, or they may be multiple (two or more) of irregular shapes such as circles, ellipses, polygons, or other shapes. The specific shape of the first opening K1 can be adaptively designed according to actual needs. This is an exemplary description of some possible implementations of the present disclosure and is not intended to limit the present disclosure.

[0113] In some embodiments, continue to refer to Figure 2A Along the thickness direction of the display panel 100, the first filter unit 311 includes a first part 311a and a second part 311b connected together, and both the first part 311a and the second part 311b extend along the first direction X, which is perpendicular to the thickness direction of the display panel 100. The first part 311a is located in the first opening K1 and is in contact with the first reflective surface 42. The two ends of the second part 311b in the first direction X are in contact with the first plane 41.

[0114] For example, such as Figure 2A As shown, the first part 311a is located inside the first opening K1 and is in contact with the first reflective surface 42. The two ends of the second part 311b in the first direction X are in contact with the first plane 41. It can be understood that the size of the first part 311a of the first filter unit 311 in the first direction X is smaller than the size of the second part 311b of the first filter unit 311 in the first direction X. This arrangement can change the light propagation path of the light-emitting unit 21 corresponding to the first filter unit 311. That is, when part of the light emitted by the light-emitting unit 21 exits along the gap between the first part 311a of the first filter unit 311 and the first optical structure layer 4, it will continue to propagate along the gap between the second part 311b of the first filter unit 311 and the first optical structure layer 4, so as to avoid light leakage in the display panel 100 and affect the display quality.

[0115] In some embodiments, refer to Figure 2A and Figure 3A The second optical structure layer 5 and the third optical structure layer 6 are located on the side of the first filter unit 311 away from the substrate 1, and the third optical structure layer 6 is away from the substrate 1 relative to the second optical structure layer 5. The second optical structure layer 5 includes a first protrusion T1. Along the direction away from the substrate 1, the sidewall of the first protrusion T1 is a second reflective surface 52. The first protrusion T1 and the first filter unit 311 overlap in the thickness direction of the display panel 100. The third optical structure layer 6 covers the first protrusion T1.

[0116] For example, refer to Figure 2A and Figure 3A Since the first filter unit 311 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100, the first protrusion T1 and the first filter unit 311 are set to overlap in the thickness direction of the display panel 100. It can be understood that the first protrusion T1 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100.

[0117] Continue to refer to Figure 2A and Figure 3A , Figure 2A The first protrusion T1 shown is in contact with the corresponding first filter unit 311. Figure 3A The first protrusion T1 shown is not in contact with the corresponding first filter unit 311, and Figure 2A and Figure 3A The sidewall of the first protrusion T1 is a second reflective surface 52. Since the first protrusion T1 has two opposite sidewalls, that is, one first protrusion T1 includes two second reflective surfaces 52. For example, the center of the first protrusion T1 and the center of the light-emitting unit 21 are located on the same straight line. This arrangement of the first protrusion T1 including two second reflective surfaces 52 is symmetrical about this straight line. In other words, the light emitted by the light-emitting unit 21 can be uniformly emitted under the action of the second reflective surfaces 52 on both sides.

[0118] In some embodiments, refer to Figure 2A and Figure 3A The average size of the first boss T1 in the first direction X is greater than the average size of the first opening K1 in the first direction X.

[0119] It should be noted that the average size of the first opening K1 in the first direction X can be the average of the sum of the distances between two opposite first ends K11 and the distances between two opposite second ends K12 along the first direction X. The first protrusion T1 has opposite first ends T11 and second ends T12 along the thickness direction of the display panel 100. The first end T11 is closer to the substrate 1 than the second end T12, and in the orthographic projection onto the substrate 1, the boundary of the first end T11 lies within the boundary of the second end T12. The average size of the first protrusion T1 in the first direction X can be the average of the sum of the distances between two opposite first ends T11 and the distances between two opposite second ends T12 along the first direction X.

[0120] For example, refer to Figure 2A and Figure 3A When the filter unit 31 is the first filter unit 311, Figure 2A and Figure 3AThe first reflective surface 42 and the second reflective surface 52, located on the same side of the light-emitting unit 21, both have a certain distance between them. For example, the distance d1 between the first reflective surface 42 and the corresponding light-emitting unit 21 ranges from 0 μm to 2 μm, and the distance d1 can be 0 μm, 1 μm, 1.5 μm, or 2 μm. Since the first reflective surface 42 coincides with the boundary of the first opening K1, the distance d1 between the first reflective surface 42 and the corresponding light-emitting unit 21 can be the distance between the first end K11 of the first opening K1 and the corresponding light-emitting unit 21.

[0121] For example, refer to Figure 2A and Figure 3A , Figure 2A The distance d2 between the second reflective surface 52 and the corresponding light-emitting unit 21 ranges from 1 μm to 2 μm, and the distance d2 can be 1 μm, 1.5 μm or 2 μm. Figure 3A The distance d2 between the second reflective surface 52 and the corresponding light-emitting unit 21 ranges from 2μm to 3μm, and the distance d2 can be 2μm, 2.5μm, or 3μm. Since the second reflective surface 52 coincides with the boundary of the first protrusion T1, the distance d2 between the second reflective surface 52 and the corresponding light-emitting unit 21 can be the distance between the first end T11 of the first protrusion T1 and the corresponding light-emitting unit 21.

[0122] For example, the above-mentioned size relationship setting increases the luminous flux of the portion of the light emitted by the light-emitting unit 21 that is directed towards the second reflective surfaces 52 on both sides of the first protrusion T1. As a result, under the action of the second reflective surfaces 52, the light output of the corresponding light-emitting unit 21 can be increased, the light output efficiency can be improved, and the display quality can be improved.

[0123] In some embodiments, refer to Figure 2A and Figure 3A The refractive index of the second optical structure layer 5 is greater than that of the third optical structure layer 6, and the refractive index of the first optical structure layer 4 is less than that of the corresponding filter unit 31.

[0124] The light emission principle of the first reflecting surface 42 and the second reflecting surface 52 is described below based on the above refractive index settings.

[0125] For example, the slope angle of the first reflective surface 42 ranges from 45° to 85°, and the slope angle of the second reflective surface 52 ranges from 65° to 85°, and with reference to... Figure 2A Along the direction away from the substrate 1, the first reflective surface 42 and the second reflective surface 52 have different tilt directions. Based on the different slope angles of the first reflective surface 42 and the second reflective surface 52, the light emitted by the light-emitting unit 21 travels different paths when it hits the first reflective surface 42 and the second reflective surface 52.

[0126] For example, if the refractive index of the first optical structure layer 4 is less than that of the corresponding filter unit 31, then when light travels from the high-refractive-index filter unit 31 to the low-refractive-index first optical structure layer 4, considering the slope angle of the first reflective surface 42, most of the light emitted by the light-emitting unit 21 will have an incident angle greater than the critical angle. Therefore, the light is prone to total internal reflection at the first reflective surface 42 and continues to travel towards the filter unit 31. Conversely, if the refractive index of the second optical structure layer 5 is greater than that of the third optical structure layer 6, when light emitted by the light-emitting unit 21 travels from the high-refractive-index second optical structure layer 5 to the low-refractive-index third optical structure layer 6, considering the slope angle of the second reflective surface 52, most of the light emitted by the light-emitting unit 21 will have an incident angle less than the critical angle. Therefore, the light is prone to refraction after passing through the second reflective surface 52 and enters the third optical structure layer 6, thus exiting towards the light-emitting surface of the display panel 100.

[0127] For example, the refractive index of the first optical structure layer 4 is in the range of 1.45 to 1.5 (including the end extreme value), and the thickness is 1.5 μm to 2.5 μm, such as 1.5 μm, 2 μm or 2.5 μm; the refractive index of the first filter unit 311 is in the range of 1.65 to 1.75 (including the end extreme value), and the thickness is in the range of 2 μm to 4 μm, such as 2 μm, 3 μm or 4 μm.

[0128] For example, the refractive index of the third optical structure layer 6 is in the range of 1.45 to 1.5 (including the end extremes). Figure 2A The refractive index of the second optical structure layer 5 shown is, for example, in the range of 1.65 to 1.75 (including the end extremes). Figure 3A The refractive index of the second optical structure layer 5 shown is, for example, in the range of 1.7 to 1.8 (including the end extreme).

[0129] Based on the above description of the light emission principle, the setting of the refractive index, the first reflective surface 42, and the second reflective surface 52 can facilitate the total internal reflection of the light emitted by the light-emitting unit 21 along the first reflective surface 42 and the refraction along the second reflective surface 52, thereby changing the light emission path of the light-emitting unit 21, increasing the amount of light emitted by the light-emitting unit 21, and thus improving the light emission efficiency of the display panel 100 at a wide viewing angle and improving the display quality of the display panel 100.

[0130] It should be noted that in the embodiment where the first filter unit 311 is partially located within the first opening K1, and the first protrusion T1 is located on the side of the first filter unit 311 away from the substrate 1, the first filter unit 311 can be one or more of a red filter unit, a green filter unit, or a blue filter unit. For example, as... Figure 2A , Figure 2B , Figure 2C , Figure 3A , Figure 3B and Figure 3C As shown, Figure 2A and Figure 3A The first filter unit is a red filter unit. Figure 2B and Figure 3B The first filter unit is a blue filter unit. Figure 2C and Figure 3C The first filter unit is a blue filter unit, therefore... Figure 2B and Figure 2C The light emitted from the light-emitting unit 21 corresponding to the first filter unit 311 undergoes total internal reflection along the first reflecting surface 42 and is refracted along the second reflecting surface 52, forming a light path that is referenced. Figure 2A The light emitted by the light-emitting unit 21 corresponding to the first filter unit 311 in the light-emitting unit undergoes total internal reflection along the first reflective surface 42 and is refracted along the second reflective surface 52. Figure 3B and Figure 3C The light emitted from the light-emitting unit 21 corresponding to the first filter unit 311 undergoes total internal reflection along the first reflecting surface 42 and is refracted along the second reflecting surface 52, forming a light path that is referenced. Figure 3A The light emitted by the light-emitting unit 21 corresponding to the first filter unit 311 in the light source undergoes total internal reflection along the first reflective surface 42 and is refracted along the second reflective surface 52. The light path is not described in detail here.

[0131] In some embodiments, such as Figure 4A As shown, the second optical structure layer 5 and the third optical structure layer 6 are located on the side of the first filter unit 311 away from the substrate 1, and the third optical structure layer 6 is away from the substrate relative to the second optical structure layer 5; the second optical structure layer 5 includes a second opening K2, the boundary of the second opening K2 is a second reflective surface 52, the second opening K2 and the first filter unit 311 are overlapped in the thickness direction of the display panel 100, and a part of the third optical structure layer 6 is located in the second opening K2.

[0132] For example, refer to Figure 4A Since the first filter unit 311 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100, the second opening K2 is set to overlap with the first filter unit 311 in the thickness direction of the display panel 100. It can be understood that the second opening K2 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100.

[0133] Continue to refer to Figure 4A , Figure 4A The second opening K2 in the middle is not in contact with the corresponding first filter unit 311, and Figure 4AThe boundary of the second opening K2 in the second optical structure layer 5 is the second reflective surface 52. That is to say, during the process of forming the second opening K2 in the second optical structure layer 5, the boundary of the second opening K2 simultaneously forms the second reflective surface 52.

[0134] For example, the second opening K2 has a first end K21 and a second end K22 opposite to each other along the thickness direction of the display panel 100, the first end K21 being closer to the substrate 1 than the second end K22; in a positive projection onto the substrate 1, the boundary of the first end K21 is within the range of the boundary of the second end K22.

[0135] For example, in the orthographic projection onto the substrate 1, the shape of the second opening K2 includes at least one of a circle, an ellipse, and a polygon. In the display panel 100, the multiple second openings K2 defined by the first optical structure layer 4 may all have the same shape, or they may be multiple (two or more) of irregular shapes such as circles, ellipses, polygons, or other shapes. The specific shape of the second opening K2 can be adaptively designed according to actual needs. This is an exemplary description of some possible embodiments of the present disclosure and is not intended to limit the present disclosure.

[0136] In some embodiments, refer to Figure 4A The average size of the first opening K1 in the first direction X is smaller than the average size of the second opening K2 in the first direction X.

[0137] It should be noted that the average size of the second opening K2 in the first direction X can be the average of the sum of the distance between the two opposite first ends K21 along the first direction X and the distance between the two opposite second ends K22.

[0138] For example, refer to Figure 4A When the filter unit 31 is the first filter unit 311, Figure 4A The first reflective surface 42 and the second reflective surface 52, located on the same side of the light-emitting unit 21, both have a certain distance between them. For example, the distance d1 between the first reflective surface 42 and the corresponding light-emitting unit 21 ranges from 0 μm to 2 μm, and the distance d1 can be 0 μm, 1 μm, 1.5 μm, or 2 μm. Since the first reflective surface 42 coincides with the boundary of the first opening K1, the distance d1 between the first reflective surface 42 and the corresponding light-emitting unit 21 can be the distance between the first end K11 of the first opening K1 and the corresponding light-emitting unit 21.

[0139] For example, refer to Figure 4A , Figure 4AThe distance d2 between the second reflective surface 52 and the corresponding light-emitting unit 21 ranges from 2μm to 3μm, and the distance d2 can be 2μm, 2.5μm, or 3μm. Since the second reflective surface 52 coincides with the boundary of the second opening K2, the distance d2 between the second reflective surface 52 and the corresponding light-emitting unit 21 can be the distance between the first end K21 of the second opening K2 and the corresponding light-emitting unit 21.

[0140] The aforementioned size arrangement results in more light rays emanating from the light-emitting unit 21 through the second opening K2, which is equivalent to increasing the emission angle and thus increasing the luminous flux. Consequently, under the action of the second reflective surfaces 52 on both sides of the second opening K2, the light output of the corresponding light-emitting unit 21 can be increased, improving the light output efficiency and thereby enhancing the display quality.

[0141] In some embodiments, refer to Figure 4A The refractive index of the second optical structure layer 5 is less than that of the third optical structure layer 6, and the refractive index of the first optical structure layer 4 is less than that of the corresponding filter unit 31.

[0142] The light emission principle of the first reflecting surface 42 and the second reflecting surface 52 is described below based on the above refractive index settings.

[0143] For example, the slope angle of the first reflecting surface 42 ranges from 45° to 85°, and the slope angle of the second reflecting surface 52 also ranges from 45° to 85°, and refers to... Figure 4A Along the direction away from the substrate 1, the tilt direction of the first reflective surface 42 and the second reflective surface 52 are the same, and the slope angle range of the first reflective surface 42 and the second reflective surface 52 is set in the same range. Therefore, the light emitted by the light-emitting unit 21 that is directed toward the first reflective surface 42 and the light that is directed toward the second reflective surface 52 are reflected in the same way.

[0144] For example, if the refractive index of the first optical structure layer 4 is less than that of the corresponding filter unit 31, then when light travels from the high-refractive-index filter unit 31 to the low-refractive-index first optical structure layer 4, considering the slope angle of the first reflective surface 42, most of the light emitted by the light-emitting unit 21 will have an incident angle greater than the critical angle. Therefore, the light is prone to total internal reflection at the first reflective surface 42 and continues to travel towards the filter unit 31. Similarly, if the refractive index of the second optical structure layer 5 is less than that of the third optical structure layer 6, when light emitted by the light-emitting unit 21 travels from the high-refractive-index third optical structure layer 6 to the low-refractive-index second optical structure layer 5, considering the slope angle of the second reflective surface 52, most of the light emitted by the light-emitting unit 21 will have an incident angle greater than the critical angle. Therefore, the light is also prone to total internal reflection after passing through the second reflective surface 52 and travels into the third optical structure layer 6 to exit towards the light-emitting surface of the display panel 100.

[0145] For example, the refractive index of the first optical structure layer 4 is in the range of 1.45 to 1.5 (including the end extreme value), and the thickness is 1.5 μm to 2.5 μm, such as 1.5 μm, 2 μm or 2.5 μm; the refractive index of the first filter unit 311 is in the range of 1.65 to 1.75 (including the end extreme value), and the thickness is in the range of 2 μm to 4 μm, such as 2 μm, 3 μm or 4 μm.

[0146] For example, the refractive index of the third optical structure layer 6 is in the range of 1.65 to 1.75 (including the end extremes), and the refractive index of the second optical structure layer 5 is in the range of 1.45 to 1.5 (including the end extremes).

[0147] Based on the above description of the light emission principle and path, the setting of the refractive index, the first reflective surface 42, and the second reflective surface 52 facilitates the secondary total internal reflection of the light emitted by the light-emitting unit 21 along the first reflective surface 42 and the second reflective surface 52, thereby changing the light emission path of the light-emitting unit 21, increasing the amount of light emitted by the light-emitting unit 21, and thus improving the light emission efficiency of the display panel 100 at a wide viewing angle and improving the display quality of the display panel 100.

[0148] It should be noted that in the scheme where the first filter unit 311 is partially located within the first opening K1, and the second optical structure layer 5 includes the second opening K2, the first filter unit 311 can be one or more of a red filter unit, a green filter unit, or a blue filter unit. For example, as... Figure 4A , Figure 4B , Figure 4C As shown, Figure 4A The first filter unit is a red filter unit. Figure 4BThe first filter unit is a blue filter unit. Figure 4C The first filter unit is a blue filter unit, therefore... Figure 4B and Figure 4C The light emitted from the light-emitting unit 21 corresponding to the first filter unit 311 in the image undergoes a secondary total internal reflection along the light path of the first reflecting surface 42 and the second reflecting surface 52, as shown in the reference image. Figure 4A The light emitted by the light-emitting unit 21 corresponding to the first filter unit 311 in the light source undergoes a secondary total internal reflection path along the first reflective surface 42 and the second reflective surface 52, which will not be described in detail here.

[0149] In some embodiments, such as Figure 5A As shown, the first optical structure layer 4 includes a second protrusion T2. ​​Along the direction away from the substrate 1, the sidewall of the second protrusion T2 is a first reflective surface 42. The filter unit 31 includes a second filter unit 312. The second filter unit 312 covers the second protrusion T2, and the light-emitting unit 21, which is correspondingly arranged with the second filter unit 312, is located in the orthogonal projection of the second protrusion T2 onto the substrate 1.

[0150] For example, refer to Figure 5A Since the second filter unit 312 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100, the second filter unit 312 is set to cover the second protrusion T2. ​​That is, the orthogonal projection of the second protrusion T2 on the substrate 1 is located within the orthogonal projection range of the second filter unit 312 on the substrate 1. It can be understood that the first protrusion T1 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100.

[0151] Continue to refer to Figure 5A , Figure 5A The sidewall of the second boss T2 shown is the first reflective surface 42. Since the second boss T2 has two opposing sidewalls, one second boss T2 includes two opposing first reflective surfaces 42.

[0152] In some embodiments, such as Figure 5A As shown, the second optical structure layer 5 and the third optical structure layer 6 are located on the side of the second filter unit 312 away from the substrate 1, and the third optical structure layer 6 is away from the substrate 1 relative to the second optical structure layer 5; the third optical structure layer 6 is located on the side of the second optical structure layer 5 away from the substrate 1, the second optical structure layer 5 includes a third protrusion T3, the sidewall of the third protrusion T3 is a second reflective surface 52, the third protrusion T3 overlaps with the second filter unit 312 in the thickness direction of the display panel 100, and the third optical structure layer 6 covers the third protrusion T3.

[0153] For example, refer to Figure 5ASince the second filter unit 312 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100, the third protrusion T3 is set to overlap with the second filter unit 312 in the thickness direction of the display panel 100. It can be understood that the third protrusion T3 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100.

[0154] Continue to refer to Figure 5A , Figure 5A The third protrusion T3 shown is not in contact with the corresponding first filter unit 311, and Figure 5A The sidewall of the third protrusion T3 is the second reflective surface 52. Since the third protrusion T3 has two opposing sidewalls, one third protrusion T3 includes two second reflective surfaces 52.

[0155] In some embodiments, continue to refer to Figure 5A The orthographic projection of the second protrusion T2 onto the substrate 1 is located within the orthographic projection of the third protrusion T3 onto the substrate 1.

[0156] For example, refer to Figure 5A When the filter unit 31 is the second filter unit 312, Figure 5A The first reflective surface 42 and the second reflective surface 52, located on the same side of the light-emitting unit 21, both have a certain distance between them. For example, the distance d1 between the first reflective surface 42 and the corresponding light-emitting unit 21 ranges from 0 μm to 2 μm, and the distance d1 can be 0 μm, 1 μm, 1.5 μm, or 2 μm. Since the first reflective surface 42 coincides with the boundary of the second protrusion T2, the distance d1 between the first reflective surface 42 and the corresponding light-emitting unit 21 can be the distance between the end of the second protrusion T2 near the substrate 1 and the corresponding light-emitting unit 21.

[0157] For example, refer to Figure 5A , Figure 5A The distance d2 between the second reflective surface 52 and the corresponding light-emitting unit 21 ranges from 2μm to 3μm, and the distance d2 can be 2μm, 2.5μm, or 3μm. Since the boundary of the second reflective surface 52 coincides with that of the third protrusion T3, the distance d2 between the second reflective surface 52 and the corresponding light-emitting unit 21 can be the distance between the end of the third protrusion T3 closest to the substrate 1 and the corresponding light-emitting unit 21.

[0158] For example, since the second protrusion T2 is closer to the substrate 1 than the third protrusion T3, the above-mentioned projection relationship allows a portion of the light emitted by the light-emitting unit 21 to be directed toward the first reflective surfaces 42 on both sides of the second protrusion T2. ​​Under the action of the first reflective surfaces 42, this portion of light is further emitted to the display surface of the display panel 100. At least a portion of the unemitted light is directed toward the second reflective surfaces 52 on both sides of the third protrusion T3. Under the action of the second reflective surfaces 52, this portion of light is further emitted to the display surface of the display panel 100. This improves light utilization, increases luminous flux, and enhances the light output of the corresponding light-emitting unit 21, thereby improving light output efficiency and ultimately improving the quality of the display panel 100.

[0159] In some embodiments, continue to refer to Figure 6A The second optical structure layer 5 and the third optical structure layer 6 are located on the side of the second filter unit 312 away from the substrate 1, and the third optical structure layer 6 is away from the substrate relative to the second optical structure layer 5; the second optical structure layer 5 includes a first pattern Q, the first pattern Q is in contact with the second filter unit, the first pattern Q and the second filter unit 312 are overlapped in the thickness direction of the display panel 100, and the first pattern Q covers the second filter unit 312, and the third optical structure layer 6 covers the first pattern Q.

[0160] For example, refer to Figure 6A Since the second filter unit 312 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100, the first pattern Q is set to cover the second filter unit 312. It can be understood that the orthogonal projection of the second filter unit 312 on the substrate 1 is located within the orthogonal projection range of the first pattern Q on the substrate 1. At the same time, the first pattern Q and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100.

[0161] Continue to refer to Figure 6A , Figure 6A The first pattern Q shown is in contact with the corresponding second filter unit 312, and Figure 6A The first pattern Q can be formed by first creating a solid second optical structure layer 5, and then forming the first pattern Q by exposure and development of the second optical structure layer 5. The first pattern Q formed by exposure and development may form a structure that is larger at one end and smaller at the other, such as... Figure 6A As shown, the size of the end of the first pattern Q furthest from the substrate 1 is smaller than the size of the end of the first pattern Q closest to the substrate 1. Specifically, the size of the first pattern Q gradually increases along the direction closest to the substrate 1. At this time, the sidewall of the first pattern Q is the second reflective surface 52. Since the first pattern Q has two opposing sidewalls, one first pattern Q includes two second reflective surfaces 52.

[0162] For example, refer to Figure 6A When the filter unit 31 is the second filter unit 312, Figure 6A The first reflective surface 42 and the second reflective surface 52, located on the same side of the light-emitting unit 21, both have a certain distance between them. For example, the distance d1 between the first reflective surface 42 and the corresponding light-emitting unit 21 ranges from 0 μm to 2 μm, and the distance d1 can be 0 μm, 1 μm, 1.5 μm, or 2 μm. Since the first reflective surface 42 coincides with the boundary of the second protrusion T2, the distance d1 between the first reflective surface 42 and the corresponding light-emitting unit 21 can be the distance between the end of the second protrusion T2 near the substrate 1 and the corresponding light-emitting unit 21.

[0163] For example, refer to Figure 6A , Figure 6A The distance d2 between the second reflective surface 52 and the corresponding light-emitting unit 21 ranges from 2μm to 3μm, and the distance d2 can be 2μm, 2.5μm or 3μm. Since the second reflective surface 52 coincides with the boundary of the first pattern Q, that is, the distance d2 between the second reflective surface 52 and the corresponding light-emitting unit 21 can be the distance between the end of the first pattern Q away from the substrate 1 and the corresponding light-emitting unit 21.

[0164] In some embodiments, continue to refer to Figure 6A The refractive index of the second optical structure layer 5 is greater than that of the third optical structure layer 6, and the refractive index of the first optical structure layer 4 is greater than that of the corresponding second filter unit 312.

[0165] The light emission principle of the first reflecting surface 42 and the second reflecting surface 52 is described below based on the above refractive index settings.

[0166] For example, the slope angle of the first reflective surface 42 ranges from 65° to 85°, and the slope angle of the second reflective surface 52 also ranges from 65° to 85°, and refers to... Figure 5A and Figure 6A Along the direction away from the substrate 1, the first reflective surface 42 and the second reflective surface 52 have the same tilt direction. The slope angle range of the first reflective surface 42 and the second reflective surface 52 is set to be the same. At the same time, the light emitted by the light-emitting unit 21 that is directed toward the first reflective surface 42 and the light that is directed toward the second reflective surface 52 are reflected in the same way.

[0167] For example, if the refractive index of the first optical structure layer 4 is greater than that of the corresponding filter unit 31, then when light travels from the high-refractive-index first optical structure layer 4 to the low-refractive-index second filter unit 312, considering the slope angle of the first reflective surface 42, most of the light emitted by the light-emitting unit 21 will have an incident angle less than the critical angle. Therefore, the light is easily refracted at the first reflective surface 42 and continues to travel towards the display surface of the display panel 100. Similarly, since the refractive index of the second optical structure layer 5 is greater than that of the third optical structure layer 6, when light emitted by the light-emitting unit 21 travels from the high-refractive-index second optical structure layer 5 to the low-refractive-index third optical structure layer 6, considering the slope angle of the second reflective surface 52, most of the light emitted by the light-emitting unit 21 will have an incident angle less than the critical angle. Therefore, after passing through the second reflective surface 52, the light is easily refracted and enters the third optical structure layer 6, thus exiting towards the light-emitting surface of the display panel 100.

[0168] For example, the refractive index of the first optical structure layer 4 is in the range of 1.65 to 1.75 (including the end extreme value), and the thickness is 1.5 μm to 2.5 μm, for example, 1.5 μm, 2 μm or 2.5 μm; the refractive index of the second filter unit 312 is in the range of 1.5 to 1.6 (including the end extreme value), and the thickness is in the range of 2 μm to 4 μm, for example, 2 μm, 3 μm or 4 μm.

[0169] For example, the refractive index of the second optical structure layer 5 is in the range of 1.7 to 1.8 (including the end extremes), and the refractive index of the third optical structure layer 6 is in the range of 1.45 to 1.5 (including the end extremes).

[0170] Based on the above description of the light emission principle, the setting of the refractive index, the first reflective surface 42 and the second reflective surface 52 can facilitate the secondary refraction of the light emitted by the light-emitting unit 21 along the first reflective surface 42 and the second reflective surface 52, thereby changing the light emission path of the light-emitting unit 21, increasing the amount of light emitted by the light-emitting unit 21, and thus improving the light emission efficiency of the display panel 100 at a wide viewing angle and improving the display quality of the display panel 100.

[0171] It should be noted that in the above-mentioned scheme where the second filter unit 312 covers the second protrusion T2, and the third protrusion T3 of the second optical structure layer 5 or the first pattern Q is located on the side of the second filter unit 312 away from the substrate 1, the second filter unit 312 can be one or more of a red filter unit, a green filter unit, or a blue filter unit. For example, as Figure 5A , Figure 5B , Figure 5C , Figure 6A , Figure 6B and Figure 6C As shown, Figure 5A and Figure 6A The second filter unit 312 is a red filter unit. Figure 5B and Figure 6B The second filter unit 312 is a blue filter unit. Figure 5C and Figure 6C The second filter unit 312 is a blue filter unit, therefore... Figure 5B and Figure 5C The light emitted by the light-emitting unit 21 corresponding to the second filter unit 312 is refracted along the first reflective surface 42 and the other part is refracted along the second reflective surface 52, forming a light output path that is consistent with... Figure 5A The light emitted by the light-emitting unit 21 corresponding to the second filter unit 312 in the middle is refracted along the first reflective surface 42 and the second reflective surface 52, and the light-emitting path is the same. Figure 6B and Figure 6C The light emitted from the light-emitting unit 21 corresponding to the second filter unit 312 in the light-emitting unit 21 is emitted along the light path after secondary refraction along the first reflecting surface 42 and the second reflecting surface 52, and... Figure 6A The light emitted by the light-emitting unit 21 corresponding to the second filter unit 312 in the light source is refracted along the first reflective surface 42 and refracted again along the second reflective surface 52. The light path is the same, and will not be described in detail here.

[0172] In some embodiments, refer to Figure 7 The second optical structure layer 5 and the third optical structure layer 6 are located on the side of the second filter unit 312 away from the substrate 1, and the third optical structure layer 6 is away from the substrate 1 relative to the second optical structure layer 5; the second optical structure layer 5 includes a third opening K3, the third opening K3 and the second filter unit 312 are overlapped in the thickness direction of the display panel 100, and a portion of the third optical structure layer 6 is located in the third opening K3.

[0173] For example, refer to Figure 7 Since the second filter unit 312 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100, the third opening K3 and the second filter unit 312 are also overlapped in the thickness direction of the display panel 100. It can be understood that the third opening K3 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100.

[0174] Continue to refer to Figure 7 , Figure 7 The third opening K3 in the middle is in contact with the corresponding first filter unit 311, and Figure 2A The boundary of the third opening K3 in the second optical structure layer 5 is the second reflective surface 52. That is to say, during the process of forming the third opening K3 in the second optical structure layer 5, the boundary of the third opening K3 simultaneously forms the second reflective surface 52.

[0175] For example, the third opening K3 has a first end K31 and a second end K32 opposite each other along the thickness direction of the display panel 100, the first end K31 being closer to the substrate 1 than the second end K32; in a positive projection onto the substrate 1, the boundary of the first end K31 is within the range of the boundary of the second end K32.

[0176] For example, in the orthographic projection onto the substrate 1, the shape of the third opening K3 includes at least one of a circle, an ellipse, and a polygon. In the display panel 100, the multiple third openings K3 defined by the first optical structure layer 4 may all have the same shape, or they may be multiple (two or more) of irregular shapes such as circles, ellipses, polygons, or other shapes. The specific shape of the third opening K3 can be adaptively designed according to actual needs. This is an exemplary description of some possible embodiments of the present disclosure and is not intended to limit the present disclosure.

[0177] In some embodiments, refer to Figure 7 The average size of the second protrusion T2 in the first direction X is smaller than the average size of the third opening K3 in the first direction X, where the first direction X is perpendicular to the thickness direction of the display panel 100.

[0178] It should be noted that the average size of the third opening K3 in the first direction X can be the average of the sum of the distance between the two opposite first ends K31 along the first direction X and the distance between the two opposite second ends K32.

[0179] For example, refer to Figure 7 When the filter unit 31 is the second filter unit 312, Figure 7 The first reflective surface 42 and the second reflective surface 52, located on the same side of the light-emitting unit 21, both have a certain distance between them. For example, the distance d3 between the first reflective surface 42 and the corresponding light-emitting unit 21 ranges from 1 μm to 2 μm, and the distance d3 can be 1 μm, 1.5 μm, or 2 μm. Since the first reflective surface 42 coincides with the boundary of the second protrusion T2, the distance d3 between the first reflective surface 42 and the corresponding light-emitting unit 21 can be the distance between the end of the second protrusion T2 near the substrate 1 and the corresponding light-emitting unit 21.

[0180] For example, refer to Figure 7 , Figure 7The distance d4 between the second reflective surface 52 and the corresponding light-emitting unit 21 ranges from 2μm to 3μm, and the distance d4 can be 2μm, 2.5μm, or 3μm. Since the second reflective surface 52 coincides with the boundary of the third opening K3, the distance d4 between the second reflective surface 52 and the corresponding light-emitting unit 21 can be the distance between the first end K31 of the third opening K3 and the corresponding light-emitting unit 21.

[0181] For example, the above-mentioned size relationship setting makes more light emitted by the light-emitting unit 21 exit along the third opening K3, which is equivalent to increasing the exit angle to increase the light flux. Then, under the action of the second reflective surfaces 52 on both sides of the third opening K3, the light output of the corresponding light-emitting unit 21 can be increased, the light output efficiency can be improved, and the display quality can be improved.

[0182] In some embodiments, refer to Figure 7 The refractive index of the second optical structure layer 5 is less than that of the third optical structure layer 6, and the refractive index of the first optical structure layer 4 is greater than that of the corresponding second filter unit 312.

[0183] The light emission principle of the first reflecting surface 42 and the second reflecting surface 52 is described below based on the above refractive index settings.

[0184] For example, the slope angle of the first reflective surface 42 ranges from 65° to 85°, and the slope angle of the second reflective surface 52 ranges from 45° to 85°, and refers to... Figure 2A Along the direction away from the substrate 1, the first reflective surface 42 and the second reflective surface 52 have different tilt directions. Based on the different slope angles of the first reflective surface 42 and the second reflective surface 52, the light emitted by the light-emitting unit 21 travels different paths when it hits the first reflective surface 42 and the second reflective surface 52.

[0185] For example, if the refractive index of the first optical structure layer 4 is greater than that of the corresponding filter unit 31, then when light travels from the high-refractive-index first optical structure layer 4 to the low-refractive-index second filter unit 312, considering the slope angle of the first reflective surface 42, it can be known that the incident angle of most of the light emitted by the light-emitting unit 21 towards the first reflective surface 42 will be less than the critical angle. Therefore, the light is easily refracted at the first reflective surface 42. Part of the refracted light can exit through the third opening K3, while the other part will travel towards the second reflective surface 52. Since the refractive index of the second optical structure layer 5 is lower... Given the refractive index of the third optical structure layer 6, the light emitted by the light-emitting unit 21, after passing through the second filter unit 312 with a high refractive index, is directed towards the third optical structure layer 6. Further, when the light from the high-refractive-index third optical structure layer 6 is directed towards the low-refractive-index third optical structure layer 6, it can be known from the slope angle of the second reflective surface 52 that the incident angle of most of the light emitted by the light-emitting unit 21 towards the second reflective surface 52 will be greater than the critical angle. Therefore, the light is prone to total internal reflection after passing through the second reflective surface 52 and continues to enter the third optical structure layer 6 to be emitted towards the light-emitting surface of the display panel 100.

[0186] For example, the refractive index of the first optical structure layer 4 is in the range of 1.65 to 1.75 (including the end extreme value), and the thickness is 1.5 μm to 2.5 μm, for example, 1.5 μm, 2 μm or 2.5 μm; the refractive index of the second filter unit 312 is in the range of 1.5 to 1.6 (including the end extreme value), and the thickness is in the range of 2 μm to 4 μm, for example, 2 μm, 3 μm or 4 μm.

[0187] For example, the refractive index of the second optical structure layer 5 is in the range of 1.45 to 1.5 (including the end extremes), and the refractive index of the third optical structure layer 6 is in the range of 1.65 to 1.75 (including the end extremes).

[0188] Based on the above description of the light emission principle, the setting of the refractive index, the first reflective surface 42, and the second reflective surface 52 can facilitate the refraction of light emitted by the light-emitting unit 21 along the first reflective surface 42 and total internal reflection along the second reflective surface 52, thereby changing the light emission path of the light-emitting unit 21, increasing the amount of light emitted by the light-emitting unit 21, and thus improving the light emission efficiency of the display panel 100 at a wide viewing angle and improving the display quality of the display panel 100.

[0189] It should be noted that in the embodiment where the second filter unit 312 covers the second protrusion T2 and the third opening K3 is located on the side of the second filter unit 312 away from the substrate 1, the second filter unit 312 can be one or more of a red filter unit, a green filter unit, or a blue filter unit. For example, as Figure 7 , Figure 2B and Figure 2C As shown, Figure 7 and Figure 2C The second filter unit 312 in the middle is a green filter unit. Figure 2B The second filter unit 312 is a red filter unit, therefore, Figure 2B and Figure 2C The light emitted from the light-emitting unit 21 corresponding to the second filter unit 312 is refracted along the first reflecting surface 42 and undergoes total internal reflection along the second reflecting surface 52, as shown in the reference. Figure 7 The light emitted by the light-emitting unit 21 corresponding to the second filter unit 312 in the light source is refracted along the first reflective surface 42 and undergoes total internal reflection along the second reflective surface 52. The light path is not described in detail here.

[0190] In some embodiments, refer to Figure 7 The display panel 100 also includes a touch structure layer 7, which includes at least one conductive layer 71. The conductive layer 71 includes multiple conductive patterns 701. The conductive patterns 701 and the filter unit 31 are located on the same layer, and the conductive patterns 701 and the filter unit 31 do not overlap in their orthogonal projections onto the substrate 1.

[0191] For example, the touch structure layer 7 of the display panel 100 can be a multi-layer (two or more layers) conductive layer 71, such as the conductive layer 71 including Figure 2A The first conductive layer 711 and the second conductive layer 712 are shown in the figure. The second conductive layer 712 is farther away from the substrate from the first conductive layer 711. The touch structure layer 7 also includes a touch insulating layer 713 disposed between the first conductive layer 711 and the second conductive layer 712. Figure 7 The touch insulating layer shown can be the first optical structure layer 4.

[0192] The touch insulating layer 713 is used to separate the first conductive layer 711 and the second conductive layer 712. The portions of the first conductive layer 711 and the second conductive layer 712 that need to be connected can be electrically connected through vias penetrating the touch insulating layer 713. The material of the touch insulating layer 713 includes at least one of silicon nitride (SiN) and organic compound (OC).

[0193] The display panel 100 may also include a touch structure layer 7. The specific design can be adapted according to actual needs, and this disclosure does not limit it.

[0194] The touch structure layer 7 includes touch electrodes and touch leads. The touch electrodes can be sheet electrodes or mesh electrodes.

[0195] The conductive pattern 701 described above can be a touch lead or part of a mesh touch electrode. Furthermore, the touch electrode and touch lead can be located within the first conductive layer 711 and / or within the second conductive layer 712.

[0196] It should be noted that, referring to Figure 7 The filter unit 31 includes a first filter unit 311 and a second filter unit 312, wherein the conductive pattern of the first conductive layer 711 is located in the same layer as the first filter unit 311, and the conductive pattern of the second conductive layer 712 is located in the same layer as the second filter unit 312. Figure 7 The first filter unit 311 shown is used as a red filter unit. Figure 7 The second filter unit 312 shown is used as a green filter unit. It should be explained that "same layer" here means that the conductive pattern of the first conductive layer 711 and the first filter unit 311 are formed on the same film layer, but their materials are different. For example, the conductive pattern of the first conductive layer 711 is made of a metal material, while the first filter unit 311 is made of a resin material. Similarly, the conductive pattern of the second conductive layer 712 and the second filter unit 312 are located on the same film layer, but their materials are different. For example, the conductive pattern of the second conductive layer 712 is made of a metal material, while the second filter unit 312 is made of a resin material. It should also be noted that the aforementioned conductive pattern 701 and filter unit 31, located on the same layer, can be prepared stepwise using different fabrication processes, and they may also be at different heights or have different thicknesses.

[0197] On the other hand, some embodiments of this disclosure also provide a display panel 100, such as Figure 8 As shown, the display panel 100 includes a substrate 1, a light-emitting structure layer 2, a filter layer 3, a first optical structure layer 4, and a second optical structure layer 5 stacked on the side of the light-emitting structure layer 2 away from the substrate 1. The light-emitting structure layer 2 is disposed on the substrate 1 and includes a plurality of light-emitting units 21; the filter layer 3 includes at least one filter unit 31, wherein the filter unit 31 is disposed on the surface of the first optical structure layer 4 and is in contact with the first optical structure layer 4.

[0198] The first optical structure layer 4 includes a first plane 41 and a first reflective surface 42. The first reflective surface 42 intersects the first plane 41 and the plane containing the substrate 1, respectively. The filter unit 31 covers the first reflective surface 42. The refractive index of the first optical structure layer 4 is different from the refractive index of the corresponding filter unit 31.

[0199] The second optical structure layer 5 is located on the side of the first optical structure layer 4 near the substrate 1, and includes a second plane 51 and a second reflective surface 52 that are in contact with each other. The second reflective surface 52 intersects the second plane 51 and the plane where the substrate 1 is located, respectively. The first optical structure layer 4 covers the second reflective surface 52. The refractive index of the second optical structure layer 5 is different from that of the first optical structure layer 4. Along the thickness direction of the display panel 100, the second reflective surface 52 overlaps with the filter unit 31.

[0200] It is understood that the first optical structure layer 4 includes a first plane 41 and a first reflective surface 42. The first plane 41 can be a plane away from the substrate 1 or a plane close to the substrate 1. The first plane 41 is parallel to the plane where the display surface of the display panel 100 is located.

[0201] In some embodiments of this application, a first reflective surface 42 and a second reflective surface 52 are provided, and the second reflective surface 52 is closer to the substrate 1 than the first reflective surface 42. Under the action of the first reflective surface 42 and the second reflective surface 52, the light emitted by the light-emitting unit 21 can be reflected or refracted along the second reflective surface 52 and the first reflective surface 42, respectively. By changing the light emission path of the light-emitting unit 21, the amount of light emitted by the light-emitting unit 21 is increased, thereby improving the light emission efficiency of the display panel 100 at a wide viewing angle.

[0202] It should be noted that since the first reflective surface 42 is disposed on the first optical structure layer 4 and the filter unit 31 covers the first reflective surface 42, it can be seen that the first reflective surface 42 and the filter unit 31 are located in different film layers, and the refractive index of the first optical structure layer 4 is different from that of the corresponding filter unit 31. This makes it easier for the light emitted by the light-emitting unit 21 to be reflected or refracted along the first reflective surface 42, thereby changing the light emission direction and improving the light emission efficiency of the display panel 100 at a wide viewing angle. Similarly, the second optical structure layer 5 includes a second reflective surface 52, and the first optical structure layer 4 covers the second reflective surface 52. It can be seen that the second optical structure layer 5 and the first optical structure layer 4 have a reflective interface, namely the second reflective surface 52. At this time, the refractive index of the second optical structure layer 5 is set to be different from that of the first optical structure layer 4, which makes it easier for the light emitted by the light-emitting unit 21 to be reflected or refracted along the second reflective surface 52. By changing the light emission path of the light-emitting unit 21, the amount of light emitted by the light-emitting unit 21 is increased, thereby improving the light emission efficiency of the display panel 100 at a wide viewing angle.

[0203] In some embodiments, the display panel 100 is configured with filter units 31 and corresponding first reflective surfaces 42 and 52, and one filter unit 31 corresponds to one light-emitting unit 21. Since the display panel 100 includes multiple light-emitting units 21, the configuration can correspond to one of the light-emitting units 21 in the display panel 100, or the filter units 31 corresponding to each of the multiple light-emitting units 21 in the display panel 100 can all adopt the above configuration; alternatively, some filter units 31 corresponding to light-emitting units 21 can adopt the structure of the filter units 31 in the display panel 100 provided in this embodiment, while the filter units 31 corresponding to other light-emitting units 21 can adopt the structure of the filter units 31 in the display panel 100 provided in the aforementioned embodiment. That is, different filter units 31 can be a combination of the two types of filter units 31 in the display panel 100 described above.

[0204] In some embodiments, such as Figure 8 As shown, the first optical structure layer 4 includes a first opening K1, which is correspondingly disposed with the light-emitting unit 21, and the boundary of the first opening K1 is the first reflective surface 42; the filter unit 31 includes a first filter unit 311, and part of the first filter unit 311 is located inside the first opening K1.

[0205] For example, refer to Figure 8 The first opening K1 is correspondingly disposed with the light-emitting unit 21, that is, one first opening K1 and one light-emitting unit 21 are overlapped along the thickness direction of the display panel 100. The thickness direction of the display panel 100 refers to the direction perpendicular to the display surface of the display panel 100. The first filter unit 311 is partially located within the first opening K1, that is, the orthographic projection of the first opening K1 on the substrate 1 and the orthographic projection of the filter unit 31 on the substrate 1 at least partially overlap.

[0206] It should be noted that, since the first optical structure layer 4 includes a first reflective surface 42, wherein the first reflective surface 42 intersects with the first plane 41 and the plane containing the substrate 1 respectively, the boundary of the first opening K1 is simultaneously formed by the first reflective surface 42 during the formation of the first opening K1 in the first optical structure layer 4.

[0207] For example, the first opening K1 has a first end K11 and a second end K12 opposite to each other along the thickness direction of the display panel 10, wherein the first end K11 is closer to the substrate 1 than the second end K12; in the orthographic projection onto the substrate 1, the boundary of the first end K11 is located within the range of the boundary of the second end K12. The relevant description of the first opening K1 here can be referred to the detailed description of the first opening K1 in the display panel 100 provided in the foregoing embodiments, and will not be repeated here.

[0208] In some embodiments, such as Figure 8 As shown, the second optical structure layer 5 includes a first protrusion T1, which is in contact with the first filter unit 311; along the direction away from the substrate 1, the sidewall of the first protrusion T1 is a second reflective surface 52, and the first protrusion T1 and the first filter unit 311 overlap in the thickness direction of the display panel 100.

[0209] For example, refer to Figure 8 Since the first filter unit 311 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100, the first protrusion T1 and the first filter unit 311 are set to overlap in the thickness direction of the display panel 100. It can be understood that the first protrusion T1 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100.

[0210] Continue referring to point 8. Figure 8 The first protrusion T1 shown is in contact with the corresponding first filter unit 311, and Figure 8 The sidewall of the first protrusion T1 is a second reflective surface 52. Since the first protrusion T1 has two opposite sidewalls, that is, one first protrusion T1 includes two second reflective surfaces 52. For example, the center of the first protrusion T1 and the center of the light-emitting unit 21 are located on the same straight line. This arrangement of the first protrusion T1 including two second reflective surfaces 52 is symmetrical about this straight line. In other words, the light emitted by the light-emitting unit 21 can be uniformly emitted under the action of the second reflective surfaces 52 on both sides.

[0211] In some embodiments, such as Figure 8 As shown, the average size of the first protrusion T1 in the first direction X is greater than the average size of the first opening K1 in the first direction X, where the first direction X is perpendicular to the thickness direction of the display panel 100.

[0212] It should be noted that the average size of the first opening K1 in the first direction X can be the average of the sum of the distances between two opposite first ends K11 and the distances between two opposite second ends K12 along the first direction X. The first protrusion T1 has opposite first ends T11 and second ends T12 along the thickness direction of the display panel 100. The first end T11 is closer to the substrate 1 than the second end T12, and in the orthographic projection onto the substrate 1, the boundary of the first end T11 lies within the boundary of the second end T12. The average size of the first protrusion T1 in the first direction X can be the average of the sum of the distances between two opposite first ends T11 and the distances between two opposite second ends T12 along the first direction X.

[0213] For example, refer to Figure 8 When the filter unit 31 is the first filter unit 311, Figure 8The first reflective surface 42 and the second reflective surface 52, located on the same side of the light-emitting unit 21, both have a certain distance between them. For example, the distance d5 between the first reflective surface 42 and the corresponding light-emitting unit 21 ranges from 1 μm to 2 μm, and the distance d5 can be 1 μm, 1.5 μm, or 2 μm. Since the first reflective surface 42 coincides with the boundary of the first opening K1, the distance d5 between the first reflective surface 42 and the corresponding light-emitting unit 21 can be the distance between the first end K11 of the first opening K1 and the corresponding light-emitting unit 21.

[0214] For example, refer to Figure 8 , Figure 8 The distance d2 between the second reflective surface 52 and the corresponding light-emitting unit 21 ranges from 2μm to 3μm, and the distance d6 can be 2μm, 2.5μm, or 3μm. Since the second reflective surface 52 coincides with the boundary of the first protrusion T1, the distance d6 between the second reflective surface 52 and the corresponding light-emitting unit 21 can be the distance between the first end T11 of the first protrusion T1 and the corresponding light-emitting unit 21.

[0215] For example, the above-mentioned size relationship setting increases the luminous flux of the portion of the light emitted by the light-emitting unit 21 that is directed towards the second reflective surfaces 52 on both sides of the first protrusion T1. As a result, under the action of the second reflective surfaces 52, the light output of the corresponding light-emitting unit 21 can be increased, the light output efficiency can be improved, and the display quality can be improved.

[0216] In some embodiments, such as Figure 8 As shown, the refractive index of the first optical structure layer 4 is less than the refractive index of the first filter unit 311, and the refractive index of the first optical structure layer 4 is less than the refractive index of the second optical structure layer 5.

[0217] The light emission principle of the first reflecting surface 42 and the second reflecting surface 52 is described below based on the above refractive index settings.

[0218] For example, the slope angle of the first reflective surface 42 ranges from 45° to 85°, and the slope angle of the second reflective surface 52 ranges from 65° to 85°, and with reference to... Figure 8 Along the direction away from the substrate 1, the first reflective surface 42 and the second reflective surface 52 have different tilt directions. Based on the different slope angles of the first reflective surface 42 and the second reflective surface 52, the light emitted by the light-emitting unit 21 travels different paths when it hits the first reflective surface 42 and the second reflective surface 52.

[0219] For example, if the refractive index of the first optical structure layer 4 is less than that of the corresponding first filter unit 311, then when light travels from the high-refractive-index first filter unit 311 to the low-refractive-index first optical structure layer 4, considering the slope angle of the first reflective surface 42, most of the light emitted by the light-emitting unit 21 will have an incident angle greater than the critical angle. Therefore, the light is prone to total internal reflection at the first reflective surface 42 and continues to travel towards the first filter unit 311. Conversely, if the refractive index of the second optical structure layer 5 is greater than that of the first optical structure layer 4, when light emitted by the light-emitting unit 21 travels from the high-refractive-index second optical structure layer 5 to the low-refractive-index first optical structure layer 4, considering the slope angle of the second reflective surface 52, most of the light emitted by the light-emitting unit 21 will have an incident angle less than the critical angle. Therefore, the light is prone to refraction after passing through the second reflective surface 52 and enters the first optical structure layer 4, exiting towards the light-emitting surface of the display panel 100.

[0220] For example, the refractive index of the first optical structure layer 4 is in the range of 1.45 to 1.5 (including the end extremes), and the thickness is 1.5 μm to 2.5 μm, for example, 1.5 μm, 2 μm or 2.5 μm; the refractive index of the first filter unit 311 is in the range of 1.65 to 1.75 (including the end extremes), and the thickness is in the range of 2 μm to 4 μm, for example, 2 μm, 3 μm or 4 μm; the refractive index of the second optical structure layer 5 is in the range of 1.65 to 1.75 (including the end extremes).

[0221] Based on the above description of the light emission principle, the setting of the refractive index, the first reflective surface 42, and the second reflective surface 52 can facilitate the total internal reflection of the light emitted by the light-emitting unit 21 along the first reflective surface 42 and the refraction along the second reflective surface 52, thereby changing the light emission path of the light-emitting unit 21, increasing the amount of light emitted by the light-emitting unit 21, and thus improving the light emission efficiency of the display panel 100 at a wide viewing angle and improving the display quality of the display panel 100.

[0222] It should be noted that in the embodiment where the first filter unit 311 is partially located within the first opening K1, and the first protrusion T1 is located on the side of the first filter unit 311 closer to the substrate 1, the first filter unit 311 can be one or more of a red filter unit, a green filter unit, or a blue filter unit. For example, as... Figure 8 As shown, Figure 8 The first filter unit 311 is a blue filter unit.

[0223] In some embodiments, such as Figure 9As shown, the first optical structure layer 4 includes a second protrusion T2. ​​Along the direction away from the substrate 1, the sidewall of the second protrusion T2 is a first reflective surface 42. The filter unit 31 includes a second filter unit 312. The second filter unit 312 covers the second protrusion T2, and the light-emitting unit 21, which is correspondingly arranged with the second filter unit 312, is located in the orthogonal projection of the second protrusion T2 onto the substrate 1.

[0224] For example, refer to Figure 9 Since the second filter unit 312 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100, the second filter unit 312 is set to cover the second protrusion T2. ​​That is, the orthogonal projection of the second protrusion T2 on the substrate 1 is located within the orthogonal projection range of the second filter unit 312 on the substrate 1. It can be understood that the first protrusion T1 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100.

[0225] Continue to refer to Figure 9 , Figure 9 The sidewall of the second protrusion T2 shown is the first reflective surface 42. Since the second protrusion T2 has two opposing sidewalls, one second protrusion T2 includes two opposing first reflective surfaces 42. The orthographic projection of the light-emitting unit 21, which is corresponding to the second filter unit 312, onto the substrate is located within the orthographic projection of the second protrusion T2 onto the substrate 1. For example, the center of the first protrusion T1 and the center of the light-emitting unit 21 are located on the same straight line. This arrangement of the first protrusion T1 including two first reflective surfaces 42 is symmetrical about this straight line. In other words, the light emitted by the light-emitting unit 21 can be uniformly emitted under the action of the first reflective surfaces 42 on both sides.

[0226] In some embodiments, such as Figure 9 As shown, the second optical structure layer 5 includes a third opening K3, which overlaps with the second filter unit 312 in the thickness direction of the display panel 100, and a portion of the first optical structure layer 4 is located within the third opening K3.

[0227] For example, refer to Figure 9 Since the second filter unit 312 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100, the third opening K3 and the second filter unit 312 are also overlapped in the thickness direction of the display panel 100. It can be understood that the third opening K3 and the corresponding light-emitting unit 21 overlap in the thickness direction of the display panel 100.

[0228] Continue to refer to Figure 9 , Figure 9 The third opening K3 in the middle is in contact with the corresponding first filter unit 311, and Figure 2AThe boundary of the third opening K3 in the second optical structure layer 5 is the second reflective surface 52. That is, during the formation of the third opening K3 in the second optical structure layer 5, the boundary of the third opening K3 simultaneously forms the second reflective surface 52. For example, the center of the third opening K3 and the center of the light-emitting unit 21 are located on the same straight line. This arrangement of the third opening K3, including two second reflective surfaces 52, is symmetrical about this straight line. In other words, the light emitted by the light-emitting unit 21 can be uniformly emitted under the action of the second reflective surfaces 52 on both sides.

[0229] For example, the third opening K3 has a first end K31 and a second end K32 opposite each other along the thickness direction of the display panel 100, the first end K31 being closer to the substrate 1 than the second end K32; in a positive projection onto the substrate 1, the boundary of the first end K31 is within the range of the boundary of the second end K32.

[0230] For example, in the orthographic projection onto the substrate 1, the shape of the third opening K3 includes at least one of a circle, an ellipse, and a polygon. In the display panel 100, the multiple third openings K3 defined by the first optical structure layer 4 may all have the same shape, or they may be multiple (two or more) of irregular shapes such as circles, ellipses, polygons, or other shapes. The specific shape of the third opening K3 can be adaptively designed according to actual needs. This is an exemplary description of some possible embodiments of the present disclosure and is not intended to limit the present disclosure.

[0231] In some embodiments, such as Figure 9 As shown, the average size of the second protrusion T2 in the first direction X is smaller than the average size of the third opening K3 in the first direction X, where the first direction X is perpendicular to the thickness direction of the display panel 100.

[0232] It should be noted that the average size of the third opening K3 in the first direction X can be the average of the sum of the distance between the two opposite first ends K31 along the first direction X and the distance between the two opposite second ends K32.

[0233] For example, refer to Figure 9 When the filter unit 31 is the second filter unit 312, Figure 9 The first reflective surface 42 and the second reflective surface 52, located on the same side of the light-emitting unit 21, both have a certain distance between them. For example, the distance d5 between the first reflective surface 42 and the corresponding light-emitting unit 21 ranges from 0 μm to 2 μm, and the distance d5 can be 0 μm, 1 μm, 1.5 μm, or 2 μm. Since the first reflective surface 42 coincides with the boundary of the second protrusion T2, the distance d5 between the first reflective surface 42 and the corresponding light-emitting unit 21 can be the distance between the end of the second protrusion T2 near the substrate 1 and the corresponding light-emitting unit 21.

[0234] For example, refer to Figure 9 , Figure 9 The distance d4 between the second reflective surface 52 and the corresponding light-emitting unit 21 ranges from 2μm to 3μm, and the distance d6 can be 2μm, 2.5μm, or 3μm. Since the second reflective surface 52 coincides with the boundary of the third opening K3, the distance d6 between the second reflective surface 52 and the corresponding light-emitting unit 21 can be the distance between the first end K31 of the third opening K3 and the corresponding light-emitting unit 21.

[0235] For example, the above-mentioned size relationship setting makes more light emitted by the light-emitting unit 21 exit along the third opening K3, which is equivalent to increasing the exit angle to increase the light flux. Then, under the action of the second reflective surfaces 52 on both sides of the third opening K3, the light output of the corresponding light-emitting unit 21 can be increased, the light output efficiency can be improved, and the display quality can be improved.

[0236] In some embodiments, refer to Figure 9 The refractive index of the first optical structure layer 4 is greater than that of the second filter unit 312, and the refractive index of the first optical structure layer 4 is greater than that of the second optical structure layer 5.

[0237] The light emission principle of the first reflecting surface 42 and the second reflecting surface 52 is described below based on the above refractive index settings.

[0238] For example, the slope angle of the first reflective surface 42 ranges from 65° to 85°, and the slope angle of the second reflective surface 52 ranges from 45° to 85°, and refers to... Figure 9 Along the direction away from the substrate 1, the first reflective surface 42 and the second reflective surface 52 have different tilt directions. Based on the different slope angles of the first reflective surface 42 and the second reflective surface 52, the light emitted by the light-emitting unit 21 travels different paths when it hits the first reflective surface 42 and the second reflective surface 52.

[0239] For example, if the refractive index of the first optical structure layer 4 is greater than that of the corresponding second filter unit 312, then when light travels from the high-refractive-index first optical structure layer 4 to the low-refractive-index second filter unit 312, based on the slope angle of the first reflective surface 42, most of the light emitted by the light-emitting unit 21 will have an incident angle less than the critical angle. Therefore, the light is easily refracted at the first reflective surface 42, changing its path and exiting. Conversely, if the refractive index of the second optical structure layer 5 is less than that of the first optical structure layer 4, the light emitted by the light-emitting unit 21, after passing through the high-refractive-index first optical structure layer 4, will travel to the second optical structure layer 5 and exit from the first optical structure layer 4. Based on the slope angle of the second reflective surface 52, most of the light emitted by the light-emitting unit 21 will have an incident angle greater than the critical angle. Therefore, the light is easily totally internally reflected after passing through the second reflective surface 52 and continues to enter the first optical structure layer 4, exiting towards the light-emitting surface of the display panel 100.

[0240] For example, the refractive index of the first optical structure layer 4 is in the range of 1.7 to 1.8 (including the end extremes), and the thickness is 1.5 μm to 2.5 μm, for example, 1.5 μm, 2 μm or 2.5 μm; the refractive index of the second filter unit 312 is in the range of 1.65 to 1.75 (including the end extremes), and the thickness is in the range of 2 μm to 4 μm, for example, 2 μm, 3 μm or 4 μm; the refractive index of the second optical structure layer 5 is in the range of 1.45 to 1.5 (including the end extremes).

[0241] Based on the above description of the light emission principle, the setting of the refractive index, the first reflective surface 42, and the second reflective surface 52 can facilitate the refraction of light emitted by the light-emitting unit 21 along the first reflective surface 42 and total internal reflection along the second reflective surface 52, thereby changing the light emission path of the light-emitting unit 21, increasing the amount of light emitted by the light-emitting unit 21, and thus improving the light emission efficiency of the display panel 100 at a wide viewing angle and improving the display quality of the display panel 100.

[0242] It should be noted that in the embodiment where the second filter unit 312 covers the second protrusion T2 and the third opening K3 is located on the side of the second filter unit 312 closer to the substrate 1, the second filter unit 312 can be one or more of a red filter unit, a green filter unit, or a blue filter unit. For example, as Figure 9 As shown, Figure 9 The second filter unit 312 is a blue filter unit.

[0243] In some embodiments, refer to Figure 9The display panel 100 also includes a touch structure layer 7, which includes at least one conductive layer 71. The conductive layer 71 is disposed on the side of the second optical structure layer 5 near or away from the substrate 1. The conductive layer 71 includes a plurality of conductive patterns 701. The orthographic projection of each conductive pattern 701 on the substrate 1 does not overlap with the orthographic projection of the filter unit 31 on the substrate 1.

[0244] For example, the touch structure layer 7 of the display panel 100 can be a multi-layer (two or more layers) conductive layer 71, such as the conductive layer 71 including Figure 9 The first conductive layer 711 and the second conductive layer 712 are shown in the figure. The second conductive layer 712 is farther away from the substrate 1 relative to the first conductive layer 711. The touch structure layer 7 also includes a touch insulating layer disposed between the first conductive layer 711 and the second conductive layer 712. Figure 9 The touch insulating layer shown can be the second optical structure layer 5.

[0245] The display panel 100 may also include a touch structure layer 7, which can be adapted to actual needs and is not limited in this disclosure. The touch structure layer 7 includes touch electrodes and touch leads. The touch electrodes can be sheet electrodes or mesh electrodes. The conductive pattern 701 mentioned above can be a touch lead or part of a mesh touch electrode. At the same time, the touch electrodes and touch leads can be located within the first conductive layer 711 and / or within the second conductive layer 712.

[0246] The following is Figure 2A For example, to introduce Figure 2A The diagram shows the planar membrane structure.

[0247] like Figure 10 As shown, Figure 10 To and Figure 2A The top view of the display panel 100 shown is based on... Figure 10 A structural diagram showing the correspondence between multiple arrayed light-emitting units and filter units 31 can be obtained for the display panel 100. The filter units 31 include red filter units, red filter units, and blue filter units, with each color filter unit corresponding to a light-emitting unit of the same color. (Refer to...) Figure 11 as well as Figures 12A to 12H , Figure 11 for Figure 10 A magnified view of the area at point C. Figure 11 In the top view of the filter unit 31 shown, from top to bottom, there are blue filter units, green filter units, and red filter units. Figure 2AFrom left to right, the filter units are arranged in order, for example, red, green, and blue. The innermost layer of each filter unit 31 shows the opening of the light-emitting unit (i.e., the opening defined by the pixel delimiting layer PDL). Taking the red filter unit as an example, along the direction away from the opening of the light-emitting unit, the annular boundaries arranged outwards sequentially include the boundary of the first opening K1 of the first optical structure layer 4, the first boundary of the first protrusion T1 of the second optical structure layer 5, the opening boundary of the black matrix layer BM, the boundary of the first filter unit 31 on the side away from the substrate, and the second boundary of the second optical structure layer 5. An annular groove is formed between the first and second boundaries of the second optical structure layer 5; that is, the first and second boundaries are naturally formed during the removal process in the second optical structure layer 5 at the groove-shaped region. Figures 12A to 12H The layers shown are, in order: pixel delimiting layer (PDL), first optical structure layer 4, filter layer 31 (red), second optical structure layer 5, filter layer 31 (green), third optical structure layer 6, filter layer 31 (blue), and black matrix layer BM. It should be noted that the layer order is also followed during the fabrication of the display panel 100. Figures 12A to 12H The membrane layers are prepared in the sequence shown.

[0248] For example, the arrangement of the plurality of light-emitting units 21 in the display panel 100 is not limited to... Figure 10 As shown, the multiple light-emitting units 21 can be arranged in any way, such as Real RGB, GGRB, Magic, or diamond arrangement, in the display panel 100.

[0249] Reference Figure 2A The aforementioned black matrix BM is located between adjacent light-emitting units 21 and is used to separate the light emitted by different light-emitting units 21, preventing crosstalk between the light emitted by adjacent light-emitting units 21. That is, the black matrix BM is used to block unwanted light and improve the contrast and color purity of the displayed image on the display panel 100.

[0250] Furthermore, some embodiments of this disclosure also provide a display device 1000, such as... Figure 1 As shown, the display device 1000 includes a display panel 100 as provided in any of the above embodiments.

[0251] For example, the display device 1000 includes the display panel 100 provided in the above embodiments, and has all the beneficial effects of the display panel 100, which will not be described in detail here.

[0252] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0253] 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

1. A display panel, characterized by, The display panel comprises: a substrate; a light-emitting structure layer disposed on the substrate and comprising a plurality of light-emitting units; a light-filtering layer, a first optical structure layer, a second optical structure layer, and a third optical structure layer disposed on the side of the light-emitting structure layer away from the substrate; the light-filtering layer comprises at least one light-filtering unit, the light-filtering unit is disposed on the surface of the first optical structure layer and in contact with the first optical structure layer; wherein the first optical structure layer comprises a first plane and a first reflecting surface, the first reflecting surface intersects the first plane and the plane where the substrate is located respectively, and the light-filtering unit covers the first reflecting surface; the refractive index of the first optical structure layer is different from the refractive index of the corresponding light-filtering unit; the second optical structure layer comprises a second plane and a second reflecting surface in contact, the second reflecting surface intersects the second plane and the plane where the substrate is located respectively, and the third optical structure layer covers the second reflecting surface; the refractive index of the second optical structure layer is different from the refractive index of the third optical structure layer; along the thickness direction of the display panel, the second reflecting surface overlaps the light-filtering unit.

2. The display panel of claim 1, wherein: the first optical structure layer comprises a first opening, the first opening is disposed corresponding to the light-emitting unit, and the boundary of the first opening is the first reflecting surface; the light-filtering unit comprises a first light-filtering unit, and the first light-filtering unit is partially located in the first opening.

3. The display panel of claim 2, wherein, Along the thickness direction of the display panel, the first light-filtering unit comprises a first part and a second part connected in series, and the first part and the second part both extend along a first direction, the first direction is perpendicular to the thickness direction of the display panel, the first part is located in the first opening, and the first part is in contact with the first reflecting surface, and the two ends of the second part in the first direction are in contact with the first plane.

4. The display panel of claim 3, wherein: the second optical structure layer and the third optical structure layer are located on the side of the first light-filtering unit away from the substrate, and the third optical structure layer is away from the substrate relative to the second optical structure layer; the second optical structure layer comprises a first boss, along the direction away from the substrate, the sidewall of the first boss is the second reflecting surface, the first boss overlaps the first light-filtering unit in the thickness direction of the display panel, and the third optical structure layer covers the first boss.

5. The display panel of claim 4, wherein: the average size of the first boss in the first direction is greater than the average size of the first opening in the first direction.

6. The display panel of any one of claims 1-5, wherein, The refractive index of the second optical structure layer is greater than the refractive index of the third optical structure layer.

7. The display panel of claim 3, wherein, the second optical structure layer and the third optical structure layer are located on the side of the first light-filtering unit away from the substrate, and the third optical structure layer is away from the substrate relative to the second optical structure layer; The second optical structure layer includes a second opening, a boundary of the second opening is the second reflecting surface, the second opening is arranged to overlap the first filter unit in a thickness direction of the display panel, and a part of the third optical structure layer is located in the second opening.

8. The display panel of claim 7, wherein, An average size of the first opening in the first direction is less than an average size of the second opening in the first direction.

9. The display panel of claim 7 or 8, wherein, A refractive index of the second optical structure layer is less than a refractive index of the third optical structure layer.

10. The display panel of any one of claims 2-5, wherein, A refractive index of the first optical structure layer is less than a refractive index of the corresponding first filter unit.

11. The display panel of claim 1, wherein The first optical structure layer includes a second boss, a sidewall of the second boss is the first reflecting surface in a direction away from the substrate, the filter unit includes a second filter unit, the second filter unit covers the second boss, and a projection of a light-emitting unit corresponding to the second filter unit on the substrate is located in a projection of the second boss on the substrate.

12. The display panel of claim 11, wherein The second optical structure layer and the third optical structure layer are located on a side of the second filter unit away from the substrate, and the third optical structure layer is away from the substrate relative to the second optical structure layer; The third optical structure layer is located on a side of the second optical structure layer away from the substrate, the second optical structure layer includes a third boss, a sidewall of the third boss is the second reflecting surface, the third boss overlaps the second filter unit in a thickness direction of the display panel, and the third optical structure layer covers the third boss.

13. The display panel of claim 12, wherein, The projection of the second boss on the substrate is located in the projection of the third boss on the substrate.

14. The display panel of claim 11, wherein The second optical structure layer and the third optical structure layer are located on a side of the second filter unit away from the substrate, and the third optical structure layer is away from the substrate relative to the second optical structure layer; The second optical structure layer includes a first pattern, the first pattern is in contact with the second filter unit, the first pattern is arranged to overlap the second filter unit in a thickness direction of the display panel, and the first pattern covers the second filter unit, and the third optical structure layer covers the first pattern.

15. The display panel of any one of claims 11-14, wherein, A refractive index of the second optical structure layer is greater than a refractive index of the third optical structure layer.

16. The display panel of claim 11, wherein The second optical structure layer and the third optical structure layer are located on a side of the second filter unit away from the substrate, and the third optical structure layer is away from the substrate relative to the second optical structure layer; The second optical structure layer includes a third opening, the third opening is arranged to overlap the second filter unit in a thickness direction of the display panel, and a part of the third optical structure layer is located in the third opening.

17. The display panel of claim 16, wherein, An average size of the second protrusion in a first direction is less than an average size of the third opening in the first direction, the first direction being perpendicular to a thickness direction of the display panel.

18. The display panel of claim 16 or 17, wherein, A refractive index of the second optical structure layer is less than a refractive index of the third optical structure layer.

19. The display panel of any one of claims 11-14, wherein, A refractive index of the first optical structure layer is greater than a refractive index of a corresponding second filter unit.

20. The display panel of claim 1, wherein, Further comprising: A touch structure layer, the touch structure layer comprising at least one conductive layer, the conductive layer comprising a plurality of conductive patterns, the conductive patterns being in the same layer as the filter units, the conductive patterns and the filter units not overlapping in a normal projection of the substrate.

21. A display panel, comprising: Comprising: A substrate; An emitting structure layer, disposed on the substrate, comprising a plurality of emitting units; A filter layer, a first optical structure layer and a second optical structure layer being stacked on a side of the emitting structure layer away from the substrate; the filter layer comprising at least one filter unit, the filter unit being disposed on a surface of the first optical structure layer and being in contact with the first optical structure layer; The first optical structure layer comprises a first plane and a first reflecting surface, the first reflecting surface intersecting the first plane and a plane where the substrate is located respectively, the filter unit covering the first reflecting surface; a refractive index of the first optical structure layer being different from a refractive index of a corresponding filter unit; The second optical structure layer is located on a side of the first optical structure layer close to the substrate, and the second optical structure layer comprises a second plane and a second reflecting surface which are connected, the second reflecting surface intersecting the second plane and the plane where the substrate is located respectively, the first optical structure layer covering the second reflecting surface; a refractive index of the second optical structure layer being different from a refractive index of the first optical structure layer; along a thickness direction of the display panel, the second reflecting surface and the filter unit have an overlap.

22. The display panel of claim 21, wherein The first optical structure layer comprises a first opening, the first opening being disposed correspondingly to the emitting unit, a boundary of the first opening being the first reflecting surface; The filter unit comprises a first filter unit, the first filter unit being partially located in the first opening.

23. The display panel of claim 22, wherein The second optical structure layer comprises a first protrusion, the first protrusion being in contact with the first filter unit; Along a direction away from the substrate, a sidewall of the first protrusion is the second reflecting surface, the first protrusion and the first filter unit having an overlap in the thickness direction of the display panel.

24. The display panel of claim 23, wherein An average size of the first protrusion in a first direction is greater than an average size of the first opening in the first direction, the first direction being perpendicular to a thickness direction of the display panel.

25. The display panel of any one of claims 22-24, wherein, A refractive index of the first optical structure layer is less than a refractive index of the first filter unit, and the refractive index of the first optical structure layer is less than a refractive index of the second optical structure layer.

26. The display panel of claim 21, wherein The first optical structure layer comprises a second boss, a sidewall of the second boss is the first reflection surface in a direction away from the substrate, the light filtering unit comprises a second light filtering unit, the second light filtering unit covers the second boss, and a light emitting unit corresponding to the second light filtering unit is located in a projection of the second boss on the substrate.

27. The display panel of claim 26, wherein, The second optical structure layer comprises a third opening, the third opening is arranged to overlap the second light filtering unit in a thickness direction of the display panel, and a part of the first optical structure layer is located in the third opening.

28. The display panel of claim 27, wherein, An average size of the second boss in a first direction is less than an average size of the third opening in the first direction, the first direction being perpendicular to the thickness direction of the display panel.

29. The display panel of any one of claims 26-28, wherein, A refractive index of the first optical structure layer is greater than a refractive index of the second light filtering unit, and the refractive index of the first optical structure layer is greater than a refractive index of the second optical structure layer.

30. The display panel of any one of claims 21-24, wherein, Further comprising: A touch structure layer, the touch structure layer comprises at least one conductive layer, the conductive layer is arranged on a side of the second optical structure layer close to or away from the substrate, the conductive layer comprises a plurality of conductive patterns, and a projection of each of the plurality of conductive patterns on the substrate does not overlap a projection of the light filtering unit on the substrate.

31. A display device comprising: Comprise: The display panel of any one of claims 1-20, or the display panel of any one of claims 21-30.

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