Display panel and display device

Abstract

The utility model discloses a display panel and a display device. The problems of color crossing and light leakage of the display panel are solved. The display panel comprises a light-emitting substrate, a color film layer arranged on the light-emitting side of the light-emitting substrate, a light-transmitting functional layer and a light absorption layer. The color film layer comprises a plurality of light filtering units. The light-transmitting functional layer is located on the surface of the side, away from the light-emitting substrate, of the color film layer, and the orthographic projection of the light-transmitting functional layer on the light-emitting substrate is at least partially overlapped with the orthographic projection of the at least one light filtering unit on the light-emitting substrate. The light absorption layer is located on the surface of the side, away from the color film layer, of the light-transmitting functional layer, and the light absorption layer covers the gap between at least two adjacent light filtering units.

Description

TECHNICAL FIELD

[0001] The utility model relates to but are not limited to display technical field, especially display panel and display device. BACKGROUND

[0002] Light emitting diode (LED, Light Emitting Diode) has the advantages of high brightness, high reliability, adjustable color temperature, green environmental protection, long service life, low power consumption, etc., and is widely used in various indication, decoration, car light, augmented reality (AR, Augmented Reality) and other demand high brightness, often in outdoor and other harsh environment used product field. Organic light emitting diode (OLED, Organic Light Emitting Diode) and quantum dot light emitting diode (QLED, Quantum-dot Light Emitting Diode) are active light emitting display devices, which have the advantages of self-luminous, wide viewing angle, high contrast, low power consumption, extremely high response speed, lightness, flexibility, low cost and the like. SUMMARY

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] The utility model embodiment provides a kind of display panel and display device.

[0005] In one aspect, the present embodiment provides a display panel, comprising: a light emitting substrate, a color film layer disposed on the light emitting side of the light emitting substrate, a light transmission functional layer, and a light absorption layer. The color film layer includes a plurality of light filtering units. The light transmission functional layer is located on the surface of the side of the color film layer away from the light emitting substrate. The light transmission functional layer at least partially overlaps the light emitting substrate with at least one light filtering unit in the light emitting substrate. The light absorption layer is located on the surface of the side of the light transmission functional layer away from the color film layer. The light absorption layer covers the gap between at least two adjacent light filtering units.

[0006] In some example embodiments, the light transmission functional layer is disposed in the groove formed by the interval of adjacent light filtering units of the color film layer.

[0007] In some example embodiments, the light absorption layer is located within the range of the light transmission functional layer in the light emitting substrate.

[0008] In some example embodiments, the light filtering unit comprises a first surface proximate to the light emitting substrate, a second surface distal to the light emitting substrate, and a sidewall connected between the first surface and the second surface, the first surface in the orthographic projection of the light emitting substrate contains the second surface and the sidewall in the orthographic projection of the light emitting substrate.

[0009] In some example embodiments, the light absorbing layer in the orthographic projection of the light emitting substrate does not overlap with the second surface of the light filtering unit in the orthographic projection of the light emitting substrate.

[0010] In some example embodiments, the light transmitting functional layer does not contact the second surface of at least one light filtering unit.

[0011] In some example embodiments, the light transmitting functional layer covers the second surface and the sidewall of at least one light filtering unit.

[0012] In some example embodiments, in a first cross section perpendicular to the plane where the light emitting substrate is located, the sidewall of at least one light filtering unit comprises a first sidewall and a second sidewall connecting the first surface and the second surface, the first sidewall has a first included angle with the first surface, the second sidewall has a second included angle with the first surface, the first included angle is greater than or equal to the second included angle.

[0013] In some example embodiments, the first cross section passes through the geometric center of the light filtering unit.

[0014] In some example embodiments, at least one of the first included angle and the second included angle is 90 degrees.

[0015] In some example embodiments, the thicknesses of the light filtering units with different light transmitting colors are at least partially the same, or all different; the thickness of the light filtering unit is the minimum distance between the first surface and the second surface of the light filtering unit.

[0016] In some example embodiments, the plurality of light filtering units comprises a first light filtering unit transmitting red light, a second light filtering unit transmitting green light, and a third light filtering unit transmitting blue light; the thickness of the second light filtering unit is less than the thickness of the first light filtering unit, and less than the thickness of the third light filtering unit.

[0017] In some example embodiments, the first included angle of the first light filtering unit and the first included angle of the third light filtering unit are proximate to the second light filtering unit, the first included angle of the second light filtering unit is the same as the second included angle of the second light filtering unit.

[0018] In some example embodiments, the display panel further comprises a lens layer located on a side of the light absorption layer distal to the light-transmissive functional layer, the lens layer comprising a plurality of lens units, at least one lens unit of the plurality of lens units overlapping a normal projection of the light-emitting substrate and a normal projection of the at least one light filtering unit on the light-emitting substrate.

[0019] In some example embodiments, the light-emitting substrate comprises a driving backplane and a plurality of light-emitting elements, the plurality of light-emitting elements being located between the driving backplane and the color film layer, a normal projection of one light-emitting element and a normal projection of one light filtering unit on the driving backplane overlapping.

[0020] In some example embodiments, the driving backplane is a silicon-based substrate integrated with a plurality of pixel circuits, the plurality of pixel circuits being electrically connected with the plurality of light-emitting elements.

[0021] In some example embodiments, a material of the light-transmissive functional layer comprises at least one of an organic phosphorescent gain material and an organic phosphorescent emission material, and a material of the light absorption layer comprises at least one of a conjugated organic polymer and a blue organic light-emitting diode material.

[0022] In another aspect, the embodiments provide a display device comprising the display panel as described above.

[0023] In another aspect, the embodiments provide a display panel comprising a light-emitting substrate and a color film layer disposed on a light-emitting side of the light-emitting substrate. The color film layer comprises a plurality of light filtering units, each of the light filtering units comprising a first surface proximate to the light-emitting substrate, a second surface distal to the light-emitting substrate, and a sidewall connected between the first surface and the second surface, an angle between the sidewall and the first surface being less than or equal to 90 degrees, thicknesses of the light filtering units being at least partially the same or different, the thickness of the light filtering unit being a minimum distance between the first surface and the second surface of the light filtering unit.

[0024] In some example embodiments, the plurality of light filtering units of the color film layer comprises a first light filtering unit transmitting red light, a second light filtering unit transmitting green light, and a third light filtering unit transmitting blue light, the thickness of the second light filtering unit being less than the thickness of the first light filtering unit and less than the thickness of the third light filtering unit.

[0025] In some example embodiments, in a first cross-section perpendicular to a plane in which the light-emitting substrate is located, the sidewall of at least one light filtering unit comprises a first sidewall and a second sidewall connected between the first surface and the second surface, the first sidewall having a first angle with the first surface, and the second sidewall having a second angle with the first surface, the first angle being greater than or equal to the second angle.

[0026] The display panel provided by the utility model can effectively block stray light and reduce color mixing phenomenon, thereby improving color purity of an image, improving color accuracy and brightness uniformity.

[0027] Other features and advantages of the utility model will be set forth in the subsequent description, and some of them become obvious from the description, or are understood through implementation of the utility model. Other advantages of the utility model can be realized and obtained through the scheme described in the description and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] The drawings are used to provide further understanding of the technical scheme of the utility model, and constitute a part of the description, and are used together with the embodiments of the utility model to explain the technical scheme of the utility model, and do not constitute the limitation to the technical scheme of the utility model.

[0029] Figure 1 It is a plane schematic view of the color film layer of a display panel;

[0030] Figure 2 It is a plane schematic view of the color film layer of the display panel of at least one embodiment of the utility model;

[0031] Figure 3 It is Figure 2 It is a partial sectional schematic view along QQ' direction;

[0032] Figure 4 It is a partial sectional schematic view of the display panel of at least one embodiment of the utility model;

[0033] Figure 5 It is another structural schematic view of the display panel of at least one embodiment of the utility model;

[0034] Figure 6 It is another structural schematic view of the display panel of at least one embodiment of the utility model;

[0035] Figure 7 It is another structural schematic view of the display panel of at least one embodiment of the utility model;

[0036] Figure 8 It is another structural schematic view of the display panel of at least one embodiment of the utility model;

[0037] Figure 9 It is a schematic view of the display device of at least one embodiment of the utility model. DETAILED DESCRIPTION

[0038] Embodiments of the present application will be described below in detail with reference to the accompanying drawings. The embodiments can be implemented in various different forms. It should be readily understood by those skilled in the art that the embodiments and the contents thereof can be changed to other forms without departing from the spirit and scope of the present application. Therefore, the present application should not be construed as being limited to the contents described in the following embodiments. The embodiments in the present application and the features in the embodiments can be arbitrarily combined so far as there is no contradiction in combination.

[0039] In the drawings, the size, the thickness, or the region of one or a plurality of components may, in some cases, be exaggerated for the purpose of explanation and is not necessarily to scale with the accompanying figures. Therefore, one embodiment of the present application is not necessarily limited by the size, the shape, and the relative arrangement of the components illustrated in the drawings. In addition, the same reference numerals are used to denote elements having substantially the same functions in all accompanying drawings. The drawings described are schematic and the shapes of the components are not intended to limit the scope of the present application.

[0040] In the present specification, ordinal numbers such as "first", "second", and "third" are used to avoid confusion among components, and are not intended to limit the number in the specification. "A plurality of" in the present application means two or more.

[0041] In the present specification, words of "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate the orientation or positional relationship, are used to describe the positional relationship of the components with reference to the drawings, and are used only for the purpose of facilitating the description of the specification and simplifying the description, and do not indicate or imply that a particular orientation, structure, and operation are required for the device or element to be pointed. Therefore, it cannot be construed as a limitation on the present application. The positional relationship of the components is appropriately changed according to the direction of the components described. Therefore, it is not limited to the words described in the specification, and can be appropriately changed according to the situation.

[0042] In this specification, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", and "coupling" are to be broadly interpreted. For example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate, or internal communication of two elements. For those skilled in the art, the meaning of the above terms in the present application can be understood according to the circumstances. Among them, "connection" can include "electrical connection", and "electrical connection" can include the case where the constituent elements are connected together through elements having certain electrical effects. "Elements having certain electrical effects" are not particularly limited as long as they can transmit electrical signals between the connected constituent elements. Examples of "elements having certain electrical effects" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, other elements with multiple functions, and the like.

[0043] In this specification, a transistor refers to an element including at least a gate (gate electrode), a drain, and a source. A transistor has a channel region between a drain (drain electrode terminal, drain region, or drain electrode) and a source (source electrode terminal, source region, or source electrode), and current can flow through the drain, the channel region, and the source. In this specification, the channel region refers to a region where current flows mainly.

[0044] In this specification, the first electrode can be a drain, and the second electrode can be a source, or the first electrode can be a source, and the second electrode can be a drain. In addition, the gate can also be referred to as a control electrode. In the case of using a transistor with opposite polarity or in the case of changing the direction of current in circuit operation, the functions of "source" and "drain" are sometimes exchanged with each other. Therefore, in this specification, "source" and "drain" can be exchanged with each other.

[0045] In this specification, "about", "approximately", and "substantially" mean not strictly limited to the limit, and allow for a range of process and measurement errors. In the present application, "the same" includes a case where the numerical value differs by 10% or less, such as a case where the numerical value differs by 5% or less.

[0046] In the present application, A extends along the direction of B means that A can include a main part and a secondary part connected to the main part, the main part is a line, a line segment or a bar-shaped body, the main part extends along the direction of B, and the length of the main part extending along the direction of B is greater than the length of the secondary part extending along other directions. In the present application, "A extends along the direction of B" means "the main part of A extends along the direction of B".

[0047] The "A and B are arranged in the same layer" in the utility model refers to that A and B are formed simultaneously through the same patterning process, or the distance between the surface of the side close to the substrate of A and B and the substrate is basically the same, or the surface of the side close to the substrate of A and B directly contacts the same film layer. The "orthographic projection of A contains the orthographic projection of B" refers to that the boundary of the orthographic projection of B falls into the boundary range of the orthographic projection of A, or the boundary of the orthographic projection of A overlaps the boundary of the orthographic projection of B. The "shape of A" in the utility model refers to the shape of the orthographic projection of A on the substrate.

[0048] In a conventional OLED display panel, a color film layer (CF, Color Film) is a key component for realizing image display, and its main function is to decompose the light emitted by the OLED into red, green and blue to generate a color image. However, the color film layer has gaps and poor lapping, which can cause different color light mixing, thereby affecting the color purity and display effect of the image. Moreover, the gaps can also cause light leakage, which not only reduces the brightness of the display panel, but also causes inaccurate colors.

[0049] Figure 1 FIG. 1 is a plan view of a color film layer of a display panel. In some examples, as shown in FIG. 1, the color film layer can include a plurality of filter units 210, and the orthographic projection shape of the filter units 210 can be substantially hexagonal. As shown in FIG. 1(a), adjacent filter units 210 can be closely lapped. However, in the circled area S1 in FIG. 1(a), there is a poor lapping condition between adjacent filter units 210, which causes a small gap due to incomplete lapping. As shown in FIG. 1(b), there is a gap between adjacent filter units 210, as shown in the circled area S2 in FIG. 1(b). Figure 1 Figure 1 Figure 1

[0050] The embodiment provides a display panel and a display device, which can improve the display problems caused by the gaps and poor lapping of the color film layer, thereby improving the color purity of the image, and improving the color accuracy and brightness uniformity.

[0051] ​​​The display panel provided by the embodiment includes a light-emitting substrate, a color film layer disposed on the light-emitting side of the light-emitting substrate, a light-transmitting functional layer, and a light-absorbing layer. The color film layer includes a plurality of light filtering units. The light-transmitting functional layer is disposed on the surface of the color film layer away from the light-emitting substrate, and the light-transmitting functional layer at least partially overlaps the light-emitting substrate with at least one light filtering unit at the light-emitting substrate. The light-absorbing layer is disposed on the surface of the light-transmitting functional layer away from the color film layer, and the light-absorbing layer covers the gap between at least two adjacent light filtering units. In some examples, the light-transmitting functional layer at the light-emitting substrate can include the light filtering units at the light-emitting substrate; in other examples, the light-transmitting functional layer at the light-emitting substrate can partially overlap the light filtering units at the light-emitting substrate.

[0052] The display panel provided by the embodiment can effectively block stray light and reduce color bleeding by disposing the light-transmitting functional layer and the light-absorbing layer on the surface of the color film layer away from the light-emitting substrate, thereby improving the color purity of the image, and improving the color accuracy and brightness uniformity.

[0053] In some example embodiments, the light-transmitting functional layer can be disposed in the groove formed between the adjacent light filtering units of the color film layer. The display panel of the present example is provided with the light-transmitting functional layer in the groove between the light filtering units, which utilizes the light-transmitting functional layer to reduce light leakage and color bleeding. The conventional color film layer structure is usually provided with a black matrix (BM) in the gap between the light filtering units to reduce light leakage and color bleeding. However, the structure using the black matrix occupies additional space and reduces the aperture ratio, and increases material waste and manufacturing cost. Compared with the conventional structure, the display panel of the present example does not need to additionally prepare the black matrix, and by optimizing the structure of the color film layer, the light-transmitting functional layer and the light-absorbing layer are directly disposed on the surface of the light filtering units of the color film layer and in the gap between the light filtering units, which not only can improve the aperture ratio, but also can reduce material waste in the manufacturing process, reduce the overall cost, and maintain better optical performance. In addition, in some implementations, in a silicon-based OLED display panel, a metal grid is usually used to fix the color film layer, but it may cause screen door effect, affecting the transparency and light transmittance of the display panel. The present example uses the light-transmitting functional layer to replace the black matrix, which can directly replace the function of the metal grid, thereby avoiding the screen door effect. The light-transmitting functional layer can be prepared by using an organic polarizer (POL) material. The POL material, as a flexible organic material, has good flexibility and stability, can be uniformly distributed in various areas, and can avoid optical problems caused by the presence of the metal grid. Moreover, the POL material itself has good optical properties, can effectively absorb excess light, reduce reflection and scattering, and thus improve the overall transparency and display effect of the display panel.

[0054] In some example embodiments, the light filtering unit can include a first surface close to the light emitting substrate, a second surface away from the light emitting substrate, and a sidewall connected between the first surface and the second surface, and the first surface contains the second surface and the sidewall in the orthographic projection of the light emitting substrate. In other words, the included angle between the sidewall and the first surface of the light filtering unit can be less than or equal to 90 degrees. The present example can reduce light loss, adjust L-decay and color unevenness, and thus improve the brightness uniformity, color symmetry and overall color consistency of the display panel by optimizing the angle between the sidewall and the first surface of the light filtering unit.

[0055] In some example embodiments, in a first cross-section perpendicular to the plane where the light emitting substrate is located, the sidewall of the at least one light filtering unit includes a first sidewall and a second sidewall connected between the first surface and the second surface, the first sidewall has a first included angle with the first surface, and the second sidewall has a second included angle with the first surface, and the first included angle can be greater than or equal to the second included angle. In some examples, the first cross-section can pass through the geometric center of the light filtering unit. For example, in the first cross-section, the cross-sectional shape of the light filtering unit can be a right trapezoid. The present example can facilitate reducing the difference in L-decay at different viewing angles and enhancing the stability of the display effect by adjusting the included angle between the sidewall and the first surface.

[0056] In some example embodiments, the thicknesses of the light filtering units of different light transmission colors can be at least partially the same or all different; wherein the thickness of the light filtering unit can be the minimum distance between the first surface and the second surface of the light filtering unit. In some examples, the plurality of light filtering units can include a first light filtering unit that transmits red light, a second light filtering unit that transmits green light, and a third light filtering unit that transmits blue light; wherein the thickness of the second light filtering unit can be less than the thickness of the first light filtering unit and less than the thickness of the third light filtering unit. The present example can reduce the difference in attenuation of different color light in the color film layer, thereby reducing light loss and L-decay, and enhancing the overall performance and color performance of the display panel by differentiating the thicknesses of the light filtering units of different light transmission colors.

[0057] The scheme of the present embodiment is exemplified below through some examples.

[0058] Figure 2 A plan view of the color film layer of the display panel of at least one embodiment of the present application is shown. In some examples, the display panel can include a display area and a frame area located at least one side of the display area. As shown in FIG. 1, the display panel can include a plurality of light emitting units 10, a plurality of light filtering units 20, and a plurality of color conversion units 30. In some examples, the light filtering unit 20 can be located between the light emitting unit 10 and the color conversion unit 30. Figure 2As shown, the color filter layer can include a plurality of filter units in the display region, for example, can include a first filter unit 211, a second filter unit 212 and a third filter unit 213. The first filter unit 211, the second filter unit 212 and the third filter unit 213 can be periodically arranged in the display region of the display panel. For example, in the direction from the frame region to the display region, the first filter unit 211, the second filter unit 212 and the third filter unit 213 are arranged in sequence in each period. The embodiment of the present application does not limit the arrangement sequence of the plurality of filter units in each period. For example, in the direction from the frame region to the display region, the first filter unit, the third filter unit and the second filter unit can be arranged in sequence in each period.

[0059] In some examples, the first filter unit 211 can be a filter unit (such as a red filter unit) that allows only first color light (such as red light) to pass through, the second filter unit 212 can be a filter unit (such as a green filter unit) that allows only second color light (such as green light) to pass through, and the third filter unit 213 can be a filter unit (such as a blue filter unit) that allows only third color light (such as blue light) to pass through. The light-emitting substrate can include a plurality of light-emitting elements that emit white light, and the plurality of filter units can correspond to the plurality of light-emitting elements, for example, one-to-one. The orthographic projection of one filter unit on the light-emitting substrate can cover the orthographic projection of one light-emitting element on the light-emitting substrate.

[0060] In some examples, the sizes of the plurality of filter units can be the same. However, the present application does not limit this. In other examples, when the plurality of filter units includes a blue filter unit, a green filter unit and a red filter unit, the size of the blue filter unit can be greater than the size of the red filter unit, the size of the red filter unit can be greater than the size of the green filter unit, or the size of the blue filter unit can be greater than the size of the green filter unit, and the size of the green filter unit can be equal to the size of the red filter unit. In this example, the size of the filter unit refers to the area of the orthographic projection of the filter unit on the light-emitting substrate.

[0061] In some examples, there can be a gap between adjacent filter units in the plurality of filter units. The edge of one filter unit can not be in contact with the edge of an adjacent filter unit. In other examples, the edges of adjacent filter units can be in direct contact.

[0062] In some examples, the light filtering unit in the orthographic projection of the light emitting substrate can be a hexagon. For example, the hexagon can have a first median line extending along a first direction D1 and a second median line extending along a second direction D2, and the intersection of the first median line and the second median line can be the geometric center point of the hexagon. The first direction D1 and the second direction D2 can intersect, for example, can be perpendicular to each other. The plane in which the first direction D1 and the second direction D2 lie can be parallel to the plane in which the light emitting substrate lies. In other examples, the light filtering unit in the orthographic projection of the light emitting substrate can be a rectangle or other shape. The present embodiment is not limited thereto.

[0063] Figure 3 For Figure 2 The schematic diagram of the partial cross section along the direction of QQ' is shown. Figure 3 The cross-sectional view shown can be a schematic diagram of a first cross section passing through the geometric center points of the first light filtering unit 211, the second light filtering unit 212, and the third light filtering unit 213. Figure 3 The dashed arrow in the figure schematically shows the light direction of the display panel.

[0064] In some examples, as Figure 3 As shown, in the plane perpendicular to the display panel, the display panel can include a light emitting substrate 10, a color film layer 21 located on the light emitting side of the light emitting substrate 10, a light transmission functional layer 31, and a light absorption layer 32. The color film layer 21, the light transmission functional layer 31, and the light absorption layer 32 can be sequentially arranged in a direction away from the light emitting substrate 10. The light transmission functional layer 31 can cover the side surface of the plurality of light filtering units of the color film layer 21 away from the light emitting substrate 10. The light transmission functional layer 31 in the orthographic projection of the light emitting substrate 10 can cover the plurality of light filtering units of the color film layer 21 in the orthographic projection of the light emitting substrate 10; the light absorption layer 32 in the orthographic projection of the light emitting substrate 10 can be located within the range of the light transmission functional layer 31 in the orthographic projection of the light emitting substrate 10. The light absorption layer 32 can cover the gap between the adjacent two light filtering units.

[0065] In some examples, as Figure 3As shown, a single filter unit can include a first surface close to the light-emitting substrate 10, a second surface away from the light-emitting substrate 10, and a sidewall connected between the first surface and the second surface. Take the second filter unit 212 as an example, the second filter unit 212 can include a first surface 2121, a second surface 2122, and a sidewall 2123 connecting the first surface 2121 and the second surface 2122. The first surface 2121 can be in contact with the light-emitting substrate 10; the second surface 2122 can be in the orthographic projection of the light-emitting substrate 10 within the orthographic projection range of the first surface 2121 in the light-emitting substrate 10. The sidewall 2123 in the orthographic projection of the light-emitting substrate 10 can be substantially in a ring structure, for example, a hexagonal ring. The sidewall 2123 in the orthographic projection of the light-emitting substrate 10 can be in the orthographic projection range of the first surface 2121 in the light-emitting substrate 10. For example, the second surface 2122 and the sidewall 2123 in the orthographic projection of the light-emitting substrate 10 can coincide with the first surface 2121 in the orthographic projection of the light-emitting substrate 10. For example, the first surface 2121 and the second surface 2122 can be parallel to each other.

[0066] In some examples, the light-transmitting functional layer 31 can be in direct contact with the first surface and the sidewall of the filter unit, and cover the gap between adjacent filter units. The orthographic projection of the light-transmitting functional layer 31 in the light-emitting substrate 10 can cover the orthographic projection of the color filter layer 21 in the light-emitting substrate 10. The orthographic projection of the light-absorbing layer 32 in the light-emitting substrate 10 can partially overlap the orthographic projection of the light-transmitting functional layer 31 in the light-emitting substrate 10. The orthographic projection of the light-absorbing layer 32 in the light-emitting substrate 10 can not overlap the first surface of the filter unit, and can partially overlap or can not overlap the sidewall of the filter unit. The light-absorbing layer 32 can be arranged in the gap between the filter units.

[0067] In some examples, the material of the light-transmitting functional layer 31 can be an organic material with a polarizing effect; the material of the light-absorbing layer 32 can be an organic material with a light-absorbing effect. For example, the light-transmitting functional layer can be configured to transmit light rays emitted from the light-emitting substrate and reflect light rays emitted from the side away from the light-emitting substrate to the color film layer. The light-transmitting functional layer 31 and the light-absorbing layer 32 can be prepared by a spin coating process. In some examples, the material of the light-transmitting functional layer 31 can include at least one of an organic phosphorescent gain material (OPL) and an organic phosphorescent emission material (OPE). The organic phosphorescent gain material (OPL) can include Nile red used in blue OLEDs, which can block non-primary color light (such as including red light and green light), thereby reducing color mixing of blue light. The organic phosphorescent emission material (OPE) can emit primary color light (such as blue light), thereby reducing light leakage of other colors. In some examples, the material of the light-absorbing layer 32 can include at least one of a conjugated organic polymer (COP) and a blue organic light-emitting diode material. The conjugated organic polymer can absorb excess color light (such as blue light), reduce excess color light reflected to the eye, thereby reducing light leakage. The blue organic light-emitting diode material itself has a high light absorption rate, can effectively absorb excess light, and reduce light leakage.

[0068] The present example can enhance the light-blocking effect by providing a light-transmitting functional layer on the color film layer, provide an additional layer of protection for the color film layer, effectively reduce light leakage caused by small gaps, and ensure that the light filtering unit is not affected by adjacent light filtering units that transmit light of different colors, thereby improving the accuracy of overall color. Moreover, the light-transmitting functional layer provides a certain physical protection for the color film layer, preventing damage to the color film layer caused by external factors such as pollution and scratches, can improve the durability of the material, and prolong the service life of the display panel. In addition, by providing a light-absorbing layer with specific light-absorbing properties, non-target wavelength light can be effectively absorbed, further improving color performance, not only improving the color richness of the display, but also improving the viewing experience.

[0069] In some examples, the thickness of the light filtering unit can refer to the minimum distance between the first surface and the second surface of the light filtering unit. For example, the thickness of the first light filtering unit 211 can be h1, the thickness of the second light filtering unit 212 can be h2, and the thickness of the third light filtering unit 213 can be h3. h1, h2, and h3 of the present example can be the same.

[0070] In some examples, in the first cross section, the sidewall 2123 of the second filter unit 212 can include a first sidewall 2123a and a second sidewall 2123b. The first sidewall 2123a can be adjacent to the first filter unit 211, and the second sidewall 2123b can be adjacent to the third filter unit 213. The first sidewall 2123a can form a first included angle a21 with the first surface 2121, and the second sidewall 2123b can form a second included angle a22 with the first surface 2121. The first included angle a21 and the second included angle a22 can be the same, for example, each less than 90 degrees, such as 60 degrees or 45 degrees. The cross-sectional shape of the second filter unit 212 can be a right trapezoid, for example. The cross-sectional shapes of the first filter unit 211 and the third filter unit 213 of the present example are similar, and thus will not be described again here.

[0071] Figure 3 The dashed line in FIG. 12 schematically shows the emergent light rays of the second filter unit 212. Green light that exits the sidewall 2123 of the second filter unit 212 can be incident on the adjacent first filter unit 211 and the third filter unit 213. Since the light-transmissive functional layer 31 covers the first filter unit 211 and the third filter unit 213, the green light cannot pass through the first filter unit 211 and the third filter unit 213, but is reflected or refracted on the light-transmissive functional layer 31 covering the first filter unit 211 and the third filter unit 213, so that the green light exits above the second filter unit 212, thereby reducing the light loss of the second filter unit 212. The light-absorbing layer 32 arranged between adjacent filter units can absorb light rays incident on the filter units from the outside, thereby effectively blocking stray light.

[0072] In the present example, by designing the included angle between the sidewall of the filter unit and the first surface to be less than 90 degrees, the refraction and reflection of light can be optimized, and the light loss can be effectively reduced. Since the cross-sectional shape of the filter unit is a right trapezoid, the thickness of the filter unit gradually decreases compared to the case where the included angle between the sidewall and the first surface is 90 degrees, which can reduce the difference in light attenuation and color asymmetry at different viewing angles, thereby improving the viewing angle performance. The right trapezoidal structure helps to improve the non-uniformity of luminance attenuation at large viewing angles, so that the luminance of the display panel at different angles is more consistent, thereby improving the overall luminance uniformity of the display panel.

[0073] With technological advancements, LED sizes in some fields are shrinking, reaching the microLED range below 50 micrometers (µm). Micro-OLEDs (Micro Organic Light-Emitting Diodes) are microdisplays that have emerged in recent years, with silicon-based OLEDs being one type. Silicon-based OLEDs not only enable active pixel addressing but also allow for the fabrication of various functional circuits on silicon substrates, including timing control (TCON) circuits and overcurrent protection (OCP) circuits, which helps reduce system size and achieve lightweight design. Silicon-based OLEDs are fabricated using mature complementary metal-oxide-semiconductor (CMOS) integrated circuit technology, offering advantages such as small size, high resolution (PPI), and high refresh rate, and are widely used in near-eye displays for virtual reality (VR) and augmented reality (AR).

[0074] The following example uses a silicon-based OLED display panel for illustration.

[0075] Figure 4 This is a partial cross-sectional schematic diagram of a display panel according to at least one embodiment of the present invention. In some examples, such as... Figure 4 As shown, in the direction perpendicular to the display panel, the display panel may include: a light-emitting substrate 10, a color filter layer 21 located on the light-emitting side of the light-emitting substrate 10, a light-transmitting functional layer 31, a light-absorbing layer 32, a first filling layer 15, a lens layer 18, a second filling layer 16, and a cover plate 17.

[0076] In some examples, the light-emitting substrate 10 can include a driving backplane and a light-emitting structure disposed on the driving backplane. The driving backplane can be a silicon-based substrate 100, which can also be referred to as an IC wafer, and can be integrated with a plurality of pixel circuits for generating driving signals, a gate driving circuit for generating gate driving signals, and a data driving circuit for generating data signals. The light-emitting structure can include a pixel definition layer 110 and a plurality of light-emitting elements, which can be electrically connected to the plurality of pixel circuits. The light-emitting element can include a first electrode 111, an organic light-emitting layer 112, and a second electrode 113, and the first electrode 111 can be connected to the pixel circuit integrated in the silicon-based substrate 100. The organic light-emitting layer 112 can be sandwiched between the first electrode 111 and the second electrode 113. The first electrode 111 can be an anode, and the second electrode 113 can be a cathode. The pixel definition layer 110 can be provided with a plurality of pixel openings in a display area, and the organic light-emitting layer 112 of the light-emitting element can be in contact with the surface of the first electrode 111 exposed by the pixel opening. The first electrode 111 and the second electrode 113 can be made of a metal material.

[0077] In some examples, the light-emitting substrate 10 can further include an encapsulation structure layer 121 located on a side of the light-emitting structure away from the silicon-based substrate 100. For example, the encapsulation structure layer 121 can include a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer stacked together. The first encapsulation layer and the third encapsulation layer can be made of inorganic materials, and the second encapsulation layer can be made of an organic material. The second encapsulation layer can be disposed between the first encapsulation layer and the third encapsulation layer to prevent external moisture from entering the light-emitting element. However, the present embodiment is not limited thereto. For example, the encapsulation structure layer can have a five-layer stacked structure of inorganic / organic / inorganic / organic / inorganic.

[0078] In some examples, the light-emitting substrate 10 can further include a planarization layer 122 located on a side of the encapsulation structure layer 121 away from the silicon-based substrate 100. A color filter layer 21 can be disposed on the planarization layer 122. The orthogonal projection of a single filter unit of the color filter layer 21 on the silicon-based substrate 100 can cover the orthogonal projection of one light-emitting element on the silicon-based substrate 100. For example, the light-emitting elements of the light-emitting substrate 10 can be configured to emit white light.

[0079] In some examples, the lens layer 18 can include a plurality of lens units 181. The plurality of lens units 181 can be arranged in an array. The orthogonal projection of one lens unit 181 on the light-emitting substrate 10 can overlap with the orthogonal projection of at least one filter unit on the light-emitting substrate 10. For example, the orthogonal projection of one lens unit 181 on the light-emitting substrate 10 can at least partially overlap with the orthogonal projection of one filter unit on the light-emitting substrate 10. For example, the orthogonal projection of one lens unit 181 on the light-emitting substrate 10 can be located within the range of the orthogonal projection of one filter unit on the light-emitting substrate 10.

[0080] In some examples, the lens unit 181 can be a convex lens convex outwards away from the light-emitting substrate 10. The convex lens is made according to the principle of refraction of light, and is a lens with a thicker center and a thinner edge. The convex lens has the effect of converging light rays. The lens unit 311 can include a third surface close to the light-emitting substrate 10 side and a fourth surface away from the light-emitting substrate 10 side. The third surface can be substantially planar, and the fourth surface can be substantially arc-shaped. The fourth surface can be located within the range of the third surface in the orthographic projection of the light-emitting substrate 10, or can coincide with the third surface in the orthographic projection of the light-emitting substrate 10. The light rays emitted from the color filter layer 21 can be sequentially converged through the third surface and the fourth surface of the lens unit 181. There is a gap between adjacent lens units, in other words, adjacent lens units can not be in direct contact.

[0081] The display panel of the present example can effectively block stray light and reduce color bleeding by providing a light-transmitting functional layer 31 in the gap between the light filtering units and the gap, and providing a light-absorbing layer 32 in the gap of the light filtering units, thereby improving the color purity of the image, further reducing the leakage of stray light from the gap of the color filter layer, and improving the color accuracy and brightness uniformity of the display panel. The remaining description of the display panel of the present example can refer to the description of the foregoing embodiments, and will not be repeated here.

[0082] In other examples, the light-emitting substrate can be an OLED substrate. The light-emitting substrate can include a substrate, and a circuit structure, a light-emitting structure, and an encapsulation structure layer arranged in sequence on the substrate. For example, the substrate can be a rigid substrate, such as including a glass substrate, or can be a flexible substrate, such as prepared from an insulating material such as resin. In other examples, the substrate can be a single-layer structure or a multi-layer structure. When the substrate is a multi-layer structure, for example, inorganic materials such as silicon nitride, silicon oxide, and silicon oxynitride can be disposed in a single layer or multiple layers between multiple layers. In some examples, the circuit structure can include a semiconductor layer, a gate metal layer (for example, including a first gate metal layer and a second gate metal layer), and a source-drain metal layer (for example, including two or more source-drain metal layers) disposed on the substrate. An insulating layer can be disposed between the semiconductor layer and an adjacent metal layer. An insulating layer can be disposed between adjacent metal layers. The gate metal layer and the source-drain metal layer can employ a metal material, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo), or an alloy material of the above metals, such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb), can be a single-layer structure, or a multi-layer composite structure such as Ti / Al / Ti, etc. The semiconductor layer can employ a material such as amorphous indium gallium zinc oxide (a-IGZO), zinc oxynitride (ZnON), indium zinc tin oxide (IZTO), amorphous silicon (a-Si), polycrystalline silicon (p-Si), hexathienyl, or polythienyl, i.e., the utility model is applicable to transistors manufactured based on oxide (Oxide) technology, silicon technology, or organic technology. In some examples, the light-emitting structure layer can include a pixel definition layer and a plurality of light-emitting elements. For example, each light-emitting element can include a first electrode, an organic light-emitting layer, and a second electrode arranged in sequence. The first electrode of the light-emitting element can be an anode, and the first electrode can be electrically connected to the corresponding pixel circuit. The pixel definition layer can be disposed on the first electrode, and the pixel definition layer can be provided with a plurality of pixel openings, one pixel opening can expose at least part of the surface of the corresponding first electrode. At least part of the organic light-emitting layer can be disposed in one pixel opening and connected to the corresponding first electrode 131. The second electrode can be a cathode, and can be disposed on the organic light-emitting layer and in contact with the organic light-emitting layer. The organic light-emitting layer can emit light of a corresponding color under the driving of the first electrode and the second electrode. The side of the pixel definition layer away from the substrate can further be provided with a spacer layer, and the spacer layer can include a plurality of spacers (PS).In some examples, the organic light emitting layer of the light emitting element can include an emitting layer (EML) and one or more film layers including a hole injection layer (HIL), a hole transport layer (HTL), a hole block layer (HBL), an electron block layer (EBL), an electron injection layer (EIL), and an electron transport layer (ETL). Under voltage driving of the first electrode and the second electrode, the light emitting characteristics of the organic material can be utilized to emit light according to a desired gray scale.

[0083] Figure 5 Another structural schematic view of the display panel of at least one embodiment of the present application is shown. In some examples, as shown in FIG. 2B, the thickness of the filter units of different light transmission colors of the color film layer 21 can be partially different. The color film layer 21 can include a first filter unit 211 for transmitting red light, a second filter unit 212 for transmitting green light, and a third filter unit 213 for transmitting blue light. The thickness h2 of the second filter unit 212 can be less than the thickness h1 of the first filter unit 211 and less than the thickness h3 of the third filter unit 213. The thickness h1 of the first filter unit 211 can be the same as the thickness h3 of the third filter unit 213. Figure 5

[0084] In some examples, in the first cross section, the included angle between the sidewall of the second filter unit 212 and the first surface can be less than the included angle between the sidewall of the first filter unit 211 and the first surface, and less than the included angle between the sidewall of the third filter unit 213 and the first surface. The first included angle a21 between the first sidewall of the second filter unit 212 and the first surface and the second included angle a22 between the second sidewall of the second filter unit 212 and the first surface can be the same.

[0085] In some examples, color deviation asymmetry is usually caused by uneven thickness of the color film layer, resulting in different attenuation differences of different color light. The present example can reduce the attenuation difference of different color light in the color film layer by thinning the thickness of the filter unit, thereby reducing color deviation. The present example can reduce the excessive attenuation of green components by thinning the thickness of the second filter unit 212, making the color more uniform. Moreover, the thinner second filter unit 212 can reduce the attenuation of green light, allowing more green light to pass through, thereby improving overall brightness. The present example helps to alleviate the problem of brightness attenuation and is conducive to improving the brightness uniformity of the display panel. The remaining description of the display panel of the present example can refer to the description of the foregoing embodiments, and thus will not be described here. ​

[0086] Figure 6 FIG. 6 is another structural schematic view of the display panel according to at least one embodiment of the present application. In some examples, as shown in FIG. 6, the angle (such as the second angle a22) between the sidewall of the second filter unit 212 and the first surface can be 90 degrees, and the angle between the sidewall of the third filter unit 213 and the first surface can be 90 degrees. Figure 6

[0087] In some examples, when the angle between the sidewall of the filter unit and the first surface is a right angle, the light directly passes out from the sidewall of the filter unit and is refracted at the right angle, which can cause the light to be refracted back and forth between the adjacent filter units, resulting in color distortion. The covering of the light-transmitting functional layer 31 on the filter unit can cause more light reflection and refraction, thereby increasing the loss and attenuation of the light, thereby reducing the brightness. In addition, the color gamut can be reduced due to uneven refraction. For example, when the display effect of the display panel is blue, the angle between the sidewall of the third filter unit transmitting the blue light and the first surface can be set to 90 degrees, so that the refraction path of the light in the color film layer is uneven, increasing the loss and attenuation of the blue light, thereby reducing the color deviation phenomenon and improving the effect of display deviation.

[0088] The present example can make the light directly pass out from the sidewall of the filter unit by optimizing the angle between the sidewall of the filter unit and the first surface to be a right angle, and the light is refracted back and forth between the sidewalls of the adjacent filter units, increasing the loss of the light transmitted by the filter unit and reducing the brightness, which can improve the color deviation phenomenon of the display panel to a certain extent, and is beneficial to the color uniformity of the entire display panel. The remaining description of the display panel of the present example can refer to the description of the foregoing embodiments.

[0089] Figure 7 FIG. 6 is another structural schematic view of the display panel according to at least one embodiment of the present application. In some examples, as shown in FIG. 6, the angle (such as the second angle a22) between the sidewall of the second filter unit 212 and the first surface can be 90 degrees, and the angle between the sidewall of the third filter unit 213 and the first surface can be 90 degrees. Figure 7 ​As shown, the plurality of filter units of the color film layer 21 can include a first filter unit 211 that transmits red light, a second filter unit 212 that transmits green light, and a third filter unit 213 that transmits blue light. The sidewall of the first filter unit 211 and the first surface can have a first included angle a11 close to the second filter unit 212 and a second included angle a12 away from the second filter unit 212; the second filter unit 212 can have a first included angle a21 close to the first filter unit 211 and a second included angle a22 close to the third filter unit 213; the third filter unit 213 can have a first included angle a31 close to the second filter unit 212 and a second included angle a32 away from the second filter unit 212. The second included angle a12 of the first filter unit 211 and the second included angle a32 of the third filter unit 213 can be less than 90 degrees, and the first included angle a11 of the first filter unit 211, the first included angle a31 of the third filter unit 213, the first included angle a21 of the second filter unit 212, and the second included angle a22 can all be 90 degrees. The present example can improve the effect of displaying green by increasing the loss and attenuation of green light.

[0090] In the present example, by setting the included angle between the sidewall and the first surface of some filter units to be a right angle, the light rays directly pass out from the sidewall of these filter units and are repeatedly refracted between the sidewalls of adjacent filter units, increasing the loss of light rays transmitted by these filter units and reducing the brightness; by setting the included angle between the sidewall and the first surface of other filter units to be less than 90 degrees, the light rays can be refracted through the sidewall of these filter units, and the path of the light rays can be smoothly adjusted. The manner of the present example can reduce the non-uniformity of brightness and color, thereby improving the brightness attenuation and color symmetry to some extent.

[0091] Figure 8 Another structural schematic view of the display panel of at least one embodiment of the present application is shown. In some examples, as shown in FIG. 8, the display panel can include a color film layer 21, a black matrix layer 22, and a plurality of sub-pixels 23. The color film layer 21 can include a plurality of filter units 211, 212, and 213. The filter units 211, 212, and 213 can be arranged in a staggered manner. The filter units 211, 212, and 213 can be arranged in a staggered manner. The filter units 211, 212, and 213 can be arranged in a staggered manner. Figure 8As shown, the plurality of filter units of the color filter layer 21 can include a first filter unit 211 that transmits red light, a second filter unit 212 that transmits green light, and a third filter unit 213 that transmits blue light. The light-transmitting functional layer 31 can not be in contact with the second surface (e.g., the second surface 2122) of the filter units that is away from the light-emitting substrate 10. The light-transmitting functional layer 31 can cover the sidewalls of the filter units. In this way, an effective barrier can be formed on the sidewalls of the filter units to block stray light from adjacent filter units, and the light blocking of the sidewalls can effectively reduce cross interference of light, ensuring that the colors of light transmitted by different filter units are more pure, thereby improving image quality. Since light mainly propagates in the vertical direction of the first surface (e.g., the first surface 2121) of the filter units, the design of the sidewalls of the filter units does not affect the main propagation path of light, but can provide necessary light blocking at key positions to ensure the purity and accuracy of colors and reduce color deviation caused by light mixing. Compared to coating the light-transmitting functional layer on the entire surface of the filter units, coating the sidewalls significantly reduces the consumption of materials, can simplify the manufacturing process, improve production efficiency, and thus reduce the overall cost. The remaining description of the display panel of the present example can refer to the description of the foregoing embodiments, and thus will not be described here again.

[0092] The present embodiment also provides a display panel, comprising: a light-emitting substrate, and a color filter layer disposed on the light-emitting side of the light-emitting substrate. The color filter layer comprises a plurality of filter units, each filter unit comprising: a first surface close to the light-emitting substrate, a second surface away from the light-emitting substrate, and a sidewall connected between the first surface and the second surface, the angle between the sidewall and the first surface being less than or equal to 90 degrees, the thicknesses of the filter units being at least partially the same or all different, the thickness of a filter unit being the minimum distance between the first surface and the second surface of the filter unit.

[0093] The display panel of the present embodiment can reduce the attenuation difference of light of different colors in the color filter layer by differentiating the thicknesses of the filter units that transmit light of different colors, thereby reducing light loss and brightness attenuation, and enhancing the overall performance and color performance of the display panel.

[0094] In some example embodiments, the plurality of filter units of the color filter layer comprises: a first filter unit that transmits red light, a second filter unit that transmits green light, and a third filter unit that transmits blue light; the thickness of the second filter unit is less than the thickness of the first filter unit and less than the thickness of the third filter unit.

[0095] In some exemplary embodiments, within a first cross-section perpendicular to the plane of the light-emitting substrate, the sidewall of at least one filter unit includes: a first sidewall and a second sidewall connecting the first surface and the second surface. The first sidewall and the first surface have a first angle, and the second sidewall and the first surface have a second angle, wherein the first angle is greater than or equal to the second angle. This example, by adjusting the angle between the sidewall and the first surface, can help reduce brightness attenuation differences at different viewing angles and enhance the stability of the display effect.

[0096] Further descriptions of the display panel in this example can be found in the description of the foregoing embodiments, and will not be repeated here.

[0097] Figure 9 This is a schematic diagram of a display device according to at least one embodiment of the present invention. In some examples, such as... Figure 9 As shown, the display device 91 may include a display panel 910. The display panel 910 may be a Micro-LED display panel or a Mini-LED display panel. The display device 91 may be a product with image (including static images or dynamic images, where dynamic images may be video) display capabilities, such as products that can be applied to in-vehicle displays, vehicle lights, vehicle windows, shopping mall displays, augmented reality (AR) devices, virtual reality (VR) devices, etc. However, this embodiment is not limited in this respect.

[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0099] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A display panel, characterized by, The display panel comprises: a light-emitting substrate; a color filter layer disposed on a light-emitting side of the light-emitting substrate and comprising a plurality of filter units; a light-transmitting functional layer disposed on a surface of the color filter layer away from the light-emitting substrate, wherein a projection of the light-transmitting functional layer on the light-emitting substrate at least partially overlaps with a projection of at least one filter unit on the light-emitting substrate; a light-absorbing layer disposed on a surface of the light-transmitting functional layer away from the color filter layer, wherein the light-absorbing layer covers a gap between at least two adjacent filter units.

2. The display panel of claim 1, wherein, The light-transmitting functional layer is disposed in a groove formed between adjacent filter units of the color filter layer.

3. The display panel of claim 1, wherein, The projection of the light-absorbing layer on the light-emitting substrate is within the projection of the light-transmitting functional layer on the light-emitting substrate.

4. The display panel of claim 1, wherein, The at least one filter unit comprises a first surface close to the light-emitting substrate, a second surface away from the light-emitting substrate, and a sidewall connected between the first surface and the second surface, wherein the projection of the first surface on the light-emitting substrate contains the projections of the second surface and the sidewall on the light-emitting substrate.

5. The display panel of claim 4, wherein, The projection of the light-absorbing layer on the light-emitting substrate does not overlap with the projection of the second surface of the at least one filter unit on the light-emitting substrate.

6. The display panel of claim 4, wherein, The light-transmitting functional layer does not contact the second surface of the at least one filter unit.

7. The display panel of claim 4, wherein, The light-transmitting functional layer covers the second surface and the sidewall of the at least one filter unit.

8. The display panel of claim 4, wherein, In a first cross section perpendicular to a plane in which the light-emitting substrate is located, the sidewall of the at least one filter unit comprises a first sidewall and a second sidewall connected between the first surface and the second surface, wherein the first sidewall has a first included angle with the first surface, and the second sidewall has a second included angle with the first surface, and the first included angle is greater than or equal to the second included angle.

9. The display panel of claim 8, wherein, The first cross section passes through a geometric center of the at least one filter unit.

10. The display panel of claim 8, wherein, At least one of the first included angle and the second included angle is 90 degrees.

11. The display panel of claim 8, wherein, Thicknesses of filter units of different light-transmitting colors are at least partially the same or all different; the thickness of the filter unit is the minimum distance between the first surface and the second surface of the filter unit.

12. The display panel of claim 11, wherein, The plurality of filter units comprises a first filter unit transmitting red light, a second filter unit transmitting green light, and a third filter unit transmitting blue light; the thickness of the second filter unit is less than the thickness of the first filter unit and less than the thickness of the third filter unit.

13. The display panel of claim 12, wherein, The first included angle of the first filter unit and the first included angle of the third filter unit are close to the second filter unit, and the first included angle of the second filter unit is the same as the second included angle of the second filter unit.

14. The display panel of any one of claims 1-13, wherein, The display panel further comprises a lens layer disposed on a side of the light-absorbing layer away from the light-transmitting functional layer, wherein the lens layer comprises a plurality of lens units, and a projection of at least one lens unit on the light-emitting substrate overlaps with a projection of the at least one filter unit on the light-emitting substrate.

15. The display panel of any one of claims 1-13, wherein, The light-emitting substrate comprises a driving backboard and a plurality of light-emitting elements; the plurality of light-emitting elements are located between the driving backboard and the color film layer; the orthographic projection of one light-emitting element on the driving backboard and the orthographic projection of one light-filtering unit on the driving backboard overlap.

16. The display panel of claim 15, wherein, The driving backboard is a silicon-based substrate integrated with a plurality of pixel circuits, and the plurality of pixel circuits are electrically connected with the plurality of light-emitting elements.

17. The display panel of claim 1, wherein, The material of the light-transmitting functional layer comprises at least one of the following: organic phosphorescent gain material and organic phosphorescent emission material; and the material of the light-absorbing layer comprises at least one of the following: conjugated organic polymer and blue organic light-emitting diode material.

18. A display device comprising: The display panel comprises the display panel as claimed in any one of claims 1 to 17.

19. A display panel, characterized by The display panel comprises: A light-emitting substrate; A color film layer disposed on the light-emitting side of the light-emitting substrate and comprising a plurality of light-filtering units, each of the light-filtering units comprising a first surface close to the light-emitting substrate, a second surface away from the light-emitting substrate, and a sidewall connected between the first surface and the second surface, the included angle between the sidewall and the first surface being less than or equal to 90 degrees, the thicknesses of the light-filtering units being at least partially the same or different, and the thickness of each light-filtering unit being the minimum distance between the first surface and the second surface of the light-filtering unit.

20. The display panel of claim 19, wherein, The plurality of light-filtering units comprise a first light-filtering unit for transmitting red light, a second light-filtering unit for transmitting green light, and a third light-filtering unit for transmitting blue light; the thickness of the second light-filtering unit is less than the thickness of the first light-filtering unit and the thickness of the third light-filtering unit.

21. The display panel of claim 19, wherein, In a first cross section perpendicular to the plane in which the light-emitting substrate is located, the sidewall of at least one light-filtering unit comprises a first sidewall and a second sidewall connected between the first surface and the second surface, the first sidewall and the first surface have a first included angle, and the second sidewall and the first surface have a second included angle, the first included angle being greater than or equal to the second included angle.

Images