Display panel and display device

Abstract

A display panel and a display device. The display panel may comprise a light-emitting substrate (1), a color film (3) and a lens layer (5). The light-emitting substrate (1) may comprise a base (101) and a light-emitting structure (26). The light-emitting structure (26) may emit initial light. The color film (3) may be disposed on the light-emitting substrate (1). The color film (3) may filter the initial light into multiple monochromatic lights of different colors. The lens layer (5) may be disposed on the side of the color film (3) away from the light-emitting substrate (1). The lens layer (5) may amplify the brightness of the multiple monochromatic lights and compensate for the brightness difference between the multiple monochromatic lights. The lens layer (5) outputs multiple amplified light rays of different colors. The brightness difference between the multiple amplified light rays is less than a preset difference.

Description

Display panel and display device Technical Field

[0001] This article relates to, but is not limited to, the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] Organic light-emitting diode (OLED) displays are widely used in various display products due to their advantages such as self-illumination, low power consumption, wide color gamut, wide viewing angle, and short response time. In particular, silicon-based organic light-emitting microdisplay panels (Micro-OLEDs), characterized by small pixel size and high pixel density, have wide applications in display products for augmented reality (AR) and virtual reality (VR) technologies, as well as in autonomous driving.

[0003] Silicon-based organic light-emitting microdisplay panels typically employ a structure combining white light-emitting devices with a color film (CF) to achieve full-color display. However, the transmittance of the color film is only about 20%, especially for blue light, which is often less than 20%, lower than that of red and green light. This results in weaker blue light brightness, affecting display performance. Current solutions to enhance blue light brightness are not ideal and can easily cause problems such as reduced lifespan.

[0004] Summary of the Invention

[0005] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0006] This disclosure provides a display panel, comprising:

[0007] A light-emitting substrate includes a substrate and a light-emitting structure, wherein the light-emitting structure is configured to emit initial light;

[0008] A color filter layer is disposed on the light-emitting substrate, and the color filter layer is configured to filter the initial light into multiple monochromatic lights of different colors;

[0009] A lens layer is disposed on the side of the color filter layer away from the light-emitting substrate. The lens layer is configured to amplify the brightness of multiple monochromatic lights and compensate for the brightness differences between the multiple monochromatic lights. The lens layer outputs multiple amplified light rays of different colors, and the brightness difference between the multiple amplified light rays is less than a preset difference.

[0010] In some exemplary embodiments, the lens layer includes a plurality of lenses spaced apart in a first direction, the plurality of lenses including at least one first lens and at least one second lens, the first lens and the second lens being configured to transmit monochromatic light of different colors, the brightness amplification gain of the first lens being greater than the brightness amplification gain of the second lens, and the first direction being parallel to the light-emitting substrate.

[0011] In some exemplary embodiments, the plurality of lenses further include at least one third lens, wherein the monochromatic light transmitted through the third lens is configured to have a different color than the monochromatic light transmitted through the first lens and the second lens;

[0012] The brightness amplification gain of the first lens is greater than that of the third lens;

[0013] Alternatively, the brightness amplification gain of the third lens may be set to be less than that of the second lens.

[0014] In some exemplary embodiments, the end face of the first lens away from the light-emitting substrate is a first curved surface, and the end face of the second lens away from the light-emitting substrate is a second curved surface, wherein the curvature of the first curved surface is greater than the curvature of the second curved surface;

[0015] Alternatively, the maximum size of the first lens in the second direction is set to be greater than the maximum size of the second lens in the second direction, and the second direction is perpendicular to the light-emitting substrate;

[0016] Alternatively, the maximum size of the first lens in the first direction may be set to be greater than the maximum size of the second lens in the first direction.

[0017] In some exemplary embodiments, the color filter layer includes a first color filter layer, a second color filter layer, and a third color filter layer, wherein the first color filter layer is configured to filter the initial light into a first monochromatic light, the second color filter layer is configured to filter the initial light into a second monochromatic light, and the third color filter layer is configured to filter the initial light into a third monochromatic light;

[0018] The orthographic projection of the first lens onto the substrate lies within the orthographic projection of the first color filter layer onto the substrate;

[0019] The orthographic projection of the second lens onto the substrate lies within the orthographic projection of the second color filter layer onto the substrate;

[0020] The orthogonal projection of the third lens onto the substrate lies within the orthogonal projection of the third color filter layer onto the substrate.

[0021] In some exemplary embodiments, the first monochromatic light is set to blue light, and the second monochromatic light is set to red light or green light;

[0022] The transmittance of the first color filter layer is less than that of the second color filter layer, and the brightness of the first monochromatic light is less than that of the second monochromatic light.

[0023] In some exemplary embodiments, the light-emitting structure includes a first electrode and a pixel definition layer disposed sequentially along a direction away from the substrate, and the color filter layer is disposed on the side of the pixel definition layer away from the substrate;

[0024] The pixel definition layer has multiple pixel openings, each pixel opening being configured to expose a portion of the surface of the first electrode. The orthographic projection of the lens onto the substrate lies within the orthographic projection of the pixel opening onto the substrate, and the center of the pixel opening is collinear with the center of the lens in a direction perpendicular to the substrate.

[0025] In some exemplary embodiments, the minimum distance between the first lens and the second lens in the first direction is set to be equal to the minimum distance between the first lens and the third lens in the first direction.

[0026] In some exemplary embodiments, the center of the pixel aperture and the center of the first electrode are configured to be collinear in a direction perpendicular to the substrate, and the minimum distance between the first color filter layer and the second lens in the first direction is set to be equal to the minimum distance between the first color filter layer and the third lens in the first direction.

[0027] In some exemplary embodiments, the center of the pixel opening and the center of the first electrode are not collinear in a direction perpendicular to the substrate;

[0028] The plurality of pixel openings include a first opening, a second opening, and a third opening, wherein the orthographic projection of the first lens on the substrate is located within the orthographic projection of the first opening on the substrate, the orthographic projection of the second lens on the substrate is located within the orthographic projection of the second opening on the substrate, and the orthographic projection of the third lens on the substrate is located within the orthographic projection of the third opening on the substrate;

[0029] The distance between the center of the first opening and the center of the second opening in the first direction is set to be equal to the distance between the center of the first opening and the center of the third opening in the first direction.

[0030] In some exemplary embodiments, the center of the pixel opening is not collinear with the center of the first electrode in a direction perpendicular to the substrate;

[0031] The plurality of pixel openings include a first opening, a second opening, and a third opening, wherein the orthographic projection of the first lens on the substrate is located within the orthographic projection of the first opening on the substrate, the orthographic projection of the second lens on the substrate is located within the orthographic projection of the second opening on the substrate, and the orthographic projection of the third lens on the substrate is located within the orthographic projection of the third opening on the substrate;

[0032] The second opening and the third opening are disposed on both sides of the first opening in the first direction, and the second opening and the third opening are disposed symmetrically in the first direction according to the center line of the first color filter layer;

[0033] The minimum distance between the first color filter layer and the second lens in the first direction is set to be equal to the minimum distance between the first color filter layer and the third lens in the first direction.

[0034] In some exemplary embodiments, the thickness of the first color filter layer, the thickness of the second color filter layer, and the thickness of the third color filter layer are set to increase sequentially;

[0035] The brightness amplification gain of the first lens, the brightness amplification gain of the second lens, and the brightness amplification gain of the third lens are set to increase sequentially.

[0036] The thickness of the first color filter layer is set to the maximum dimension of the first color filter layer in the second direction, the thickness of the second color filter layer is set to the maximum dimension of the second color filter layer in the second direction, and the thickness of the third color filter layer is set to the maximum dimension of the third color filter layer in the second direction, wherein the second direction is perpendicular to the light-emitting substrate.

[0037] In some exemplary embodiments, the thickness difference between the first color filter layer and the second color filter layer is set to be less than or equal to 0.8 micrometers, and the thickness difference between the second color filter layer and the third color filter layer is set to be less than or equal to 0.8 micrometers.

[0038] In some exemplary embodiments, the maximum dimension of the first lens in the first direction is a first width, the maximum dimension of the second lens in the first direction is a second width, and the maximum dimension of the third lens in the first direction is a third width;

[0039] The difference between the first width and the second width is less than or equal to 1.5 micrometers, and the difference between the second width and the third width is set to be less than or equal to 1.5 micrometers.

[0040] In some exemplary embodiments, a filling layer is also included, which is located between the lens layer and the color filter layer.

[0041] In some exemplary embodiments, the filling layer is configured to compensate for the height difference between the first color filter layer, the second color filter layer and the third color filter layer, and the ends of the plurality of lenses near the light-emitting substrate are located on the same plane parallel to the light-emitting substrate;

[0042] Alternatively, the filling layer is configured to compensate for the height difference between the first lens, the second lens, and the third lens, with the ends of the first lens, the second lens, and the third lens away from the light-emitting substrate located on the same plane parallel to the light-emitting substrate.

[0043] In some exemplary embodiments, the refractive index of the filling layer is set to be greater than the refractive index of the lens layer and less than the refractive index of the color filter layer.

[0044] In some exemplary embodiments, the filling layer has a third curved surface recessed into the light-emitting substrate, and at least one of the lenses is configured to overlap with the orthogonal projection of the third curved surface on the substrate, wherein the third curved surface is configured to focus monochromatic light transmitted through the filling layer toward the lens.

[0045] In some exemplary embodiments, the third surface is provided in multiple ways, and the multiple third surfaces are arranged along a direction parallel to the base, and the multiple third surfaces are provided as multiple surfaces with different curvatures.

[0046] In some exemplary embodiments, at least one of the first color filter layer, the second color filter layer, and the third color filter layer has a fourth curved surface recessed toward the light-emitting substrate on the end face away from the light-emitting substrate;

[0047] The filling layer covers the fourth curved surface, and the orthographic projection of the fourth curved surface on the substrate overlaps with the orthographic projection of the third curved surface on the substrate.

[0048] In some exemplary embodiments, one of the lenses is configured to cover the third curved surface, and a fifth curved surface matching the third curved surface is provided on the end face near the light-emitting substrate.

[0049] In some exemplary embodiments, the fourth curved surface is disposed on the first color filter layer, and the end of the fourth curved surface near the light-emitting substrate is configured to be flush with the end of the second color filter layer and the third color filter layer away from the light-emitting substrate;

[0050] The maximum dimension of the circumferential edge of the first color filter layer in the direction perpendicular to the substrate is the first thickness, which is set to be greater than the thickness of the second color filter layer and the third color filter layer.

[0051] In some exemplary embodiments, the heights of the first lens, the second lens, and the third lens are configured to decrease sequentially;

[0052] The brightness amplification gain of the first lens, the brightness amplification gain of the second lens, and the brightness amplification gain of the third lens are set to decrease sequentially.

[0053] The height of the first lens is set to the maximum size of the first lens in the direction perpendicular to the light-emitting substrate, the height of the second lens is set to the maximum size of the second lens in the direction perpendicular to the light-emitting substrate, and the height of the third lens is set to the maximum size of the third lens in the direction perpendicular to the light-emitting substrate.

[0054] In some exemplary embodiments, the difference between the height of the first lens and the height of the second lens is less than or equal to 1 micrometer, and the difference between the height of the second lens and the height of the third lens is less than or equal to 1 micrometer.

[0055] The ratio between the brightness amplification gain of the first lens and the brightness amplification gain of the second lens is set to 1 to 1.5, and the ratio between the brightness amplification gain of the second lens and the brightness amplification gain of the third lens is set to 1 to 1.5.

[0056] This disclosure provides a display device, which includes the display panel described above.

[0057] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood.

[0058] Overview of the attached figures

[0059] The accompanying drawings are provided to further illustrate the technical solutions of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the technical solutions of this disclosure and do not constitute a limitation on the technical solutions of this disclosure. The shape and size of one or more components in the drawings do not reflect actual proportions and are only intended to illustrate the content of this disclosure.

[0060] Figure 1 is a schematic diagram of a display device;

[0061] Figure 2 is a schematic diagram of the planar structure of a display device;

[0062] Figure 3 is a schematic cross-sectional view of a display device;

[0063] Figure 4 is an equivalent circuit diagram of a pixel driving circuit;

[0064] Figure 5 is a cross-sectional schematic diagram of a display panel according to this exemplary embodiment;

[0065] Figure 6 is a magnified view of part A in Figure 5;

[0066] Figure 7 is a magnified view of part B in Figure 5;

[0067] Figure 8 is a cross-sectional schematic diagram of another display panel of this exemplary embodiment;

[0068] Figure 9 is a top view of the display panel in Figure 5;

[0069] Figure 10 is a top view of another display panel of this exemplary embodiment;

[0070] Figure 11 is a cross-sectional schematic diagram of another display panel according to this exemplary embodiment;

[0071] Figure 12 is a cross-sectional schematic diagram of another display panel of this exemplary embodiment;

[0072] Figure 13 is a cross-sectional schematic diagram of another display panel according to this exemplary embodiment;

[0073] Figure 14 is a schematic diagram of another lens in this exemplary embodiment;

[0074] Figure 15 is a first schematic diagram of the fabrication of the color filter layer in this exemplary embodiment;

[0075] Figure 16 is a second schematic diagram of the fabrication of the color filter layer in this exemplary embodiment;

[0076] Figure 17 is a schematic diagram of another display panel of this exemplary embodiment.

[0077] Detailed Explanation

[0078] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. The implementation can be carried out in many different forms. Those skilled in the art will readily understand that the methods and content can be transformed into other forms without departing from the spirit and scope of this disclosure. Therefore, this disclosure should not be construed as limited to the content described in the following embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be arbitrarily combined with each other.

[0079] In the accompanying drawings, the size of one or more constituent elements, the thickness of layers, or areas are sometimes exaggerated for clarity. Therefore, this disclosure is not necessarily limited to these dimensions, and the shape and size of one or more parts in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate ideal examples, and this disclosure is not limited to the shapes or values ​​shown in the drawings.

[0080] The ordinal numbers such as "first," "second," and "third" used in this specification are used to avoid confusion among the constituent elements, not to limit the quantity. The term "multiple" in this disclosure refers to two or more quantities.

[0081] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of facilitating the description and simplification, and does not imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this disclosure. The positional relationships of the constituent elements may be appropriately varied depending on the orientation of the constituent elements being described. Therefore, the use of terms not limited to those described in the specification may be appropriately replaced as needed.

[0082] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or joint; a direct connection, an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the meaning of these terms in this disclosure as appropriate.

[0083] In this specification, "electrical connection" includes the situation where components are connected together by elements that have a certain electrical function. There are no particular limitations on what constitutes an "electrical function," as long as it allows for the transmission of electrical signals between the connected components. Examples of "electrical functions" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements with various functions.

[0084] In this specification, a transistor is a device that includes at least three terminals: a gate, a drain, and a source. A transistor has a channel region between its drain (drain terminal, drain region, or drain electrode) and its source (source 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 the region through which current primarily flows.

[0085] In this specification, the first terminal can be the drain and the second terminal can be the source, or vice versa. In cases where transistors with opposite polarities are used or where the current direction changes during circuit operation, the functions of the "source" and "drain" are sometimes interchanged. Therefore, in this specification, the "source" and "drain" can be interchanged. Additionally, the gate can also be called the control terminal.

[0086] In this specification, "parallel" refers to the state where the angle formed by two straight lines is greater than or equal to -10° and less than 10°, and therefore also includes the state where the angle is greater than or equal to -5° and less than 5°. Similarly, "perpendicular" refers to the state where the angle formed by two straight lines is greater than or equal to 80° and less than 100°, and therefore also includes the state where the angle is greater than or equal to 85° and less than 95°.

[0087] In this specification, circles, ellipses, triangles, rectangles, trapezoids, pentagons, or hexagons are not strictly defined. They can be approximate circles, ellipses, triangles, rectangles, trapezoids, pentagons, or hexagons. Small deformations due to tolerances are possible, such as chamfers, curved edges, and other variations.

[0088] In this disclosure, "approximately" and "roughly" refer to situations where the limits are not strictly defined, allowing for errors in the process and measurement. In this disclosure, "roughly the same" means that the values ​​differ by no more than 10%. In this disclosure, "symmetric" refers to situations where the limits are not strictly defined, allowing for approximately symmetry within the range of errors in the process and measurement.

[0089] In some exemplary embodiments, a display panel includes a light-emitting substrate, a color filter layer, and a lens layer. The light-emitting substrate is configured to emit initial light. The color filter layer is disposed on the light-emitting substrate and configured to filter the initial light into multiple monochromatic lights of different colors. The lens layer is disposed on the side of the color filter layer away from the light-emitting substrate and configured to amplify the brightness of the multiple monochromatic lights and compensate for brightness differences between the multiple monochromatic lights. The lens layer outputs multiple amplified light rays of different colors, and the brightness difference between the multiple amplified light rays is less than a preset difference.

[0090] In some exemplary embodiments, the lens layer includes a plurality of lenses arranged at intervals parallel to the direction of the light-emitting substrate. The plurality of lenses include at least one first lens and at least one second lens. The first lens and the second lens are configured to transmit monochromatic light of different colors, and the brightness amplification gain of the first lens is greater than that of the second lens.

[0091] In some exemplary embodiments, the plurality of lenses further includes at least one third lens, wherein the monochromatic light transmitted through the third lens is configured to have a different color than the monochromatic light transmitted through the first lens and the second lens. The brightness amplification gain of the first lens is greater than the brightness amplification gain of the third lens, or the brightness amplification gain of the third lens is configured to be less than the brightness amplification gain of the second lens.

[0092] In some exemplary embodiments, the end face of the first lens away from the light-emitting substrate is a first curved surface, and the end face of the second lens away from the light-emitting substrate is a second curved surface, wherein the curvature of the first curved surface is greater than the curvature of the second curved surface. Alternatively, the maximum dimension of the first lens in the direction perpendicular to the light-emitting substrate is set to be greater than the maximum dimension of the second lens in the direction perpendicular to the light-emitting substrate. Alternatively, the maximum dimension of the first lens in the direction parallel to the light-emitting substrate is set to be greater than the maximum dimension of the second lens in the direction parallel to the light-emitting substrate.

[0093] In some exemplary embodiments, the color filter layer includes a first color filter layer, a second color filter layer, and a third color filter layer. The first color filter layer is configured to filter the initial light into a first monochromatic light, the second color filter layer is configured to filter the initial light into a second monochromatic light, and the third color filter layer is configured to filter the initial light into a third monochromatic light. The orthographic projection of the first lens onto the substrate lies within the orthographic projection of the first color filter layer onto the substrate, the orthographic projection of the second lens onto the substrate lies within the orthographic projection of the second color filter layer onto the substrate, and the orthographic projection of the third lens onto the substrate lies within the orthographic projection of the third color filter layer onto the substrate.

[0094] In some exemplary embodiments, the minimum distance between the first lens and the second lens in the direction parallel to the light-emitting substrate is set to be equal to the minimum distance between the first lens layer and the third lens in the direction parallel to the light-emitting substrate.

[0095] In some exemplary embodiments, a filling layer is also included, which is located between the lens layer and the color filter layer.

[0096] In some exemplary embodiments, the filling layer is configured to compensate for the height difference between the first color filter layer, the second color filter layer and the third color filter layer, and the ends of the plurality of lenses near the light-emitting substrate are located on the same plane parallel to the light-emitting substrate;

[0097] Alternatively, the filling layer is configured to compensate for the height difference between the first lens, the second lens, and the third lens, with the ends of the first lens, the second lens, and the third lens away from the light-emitting substrate located on the same plane parallel to the light-emitting substrate.

[0098] In some exemplary embodiments, the refractive index of the filling layer is set to be greater than the refractive index of the lens layer and less than the refractive index of the color filter layer.

[0099] In some exemplary embodiments, the filling layer has a third curved surface recessed into the light-emitting substrate, and at least one of the lenses is configured to overlap with the orthogonal projection of the third curved surface on the substrate, wherein the third curved surface is configured to focus monochromatic light transmitted through the filling layer toward the lens.

[0100] In some exemplary embodiments, the third surface is provided in multiple ways, and the multiple third surfaces are arranged along a direction parallel to the base, and the multiple third surfaces are provided as multiple surfaces with different curvatures.

[0101] In some exemplary embodiments, at least one of the first color filter layer, the second color filter layer, and the third color filter layer has a fourth curved surface recessed toward the light-emitting substrate on the end face away from the light-emitting substrate;

[0102] The filling layer covers the fourth curved surface, and the orthographic projection of the fourth curved surface on the substrate overlaps with the orthographic projection of the third curved surface on the substrate.

[0103] In some exemplary embodiments, one of the lenses is configured to cover the third curved surface, and a fifth curved surface matching the third curved surface is provided on the end face near the light-emitting substrate.

[0104] In some exemplary embodiments, the fourth curved surface is disposed on the first color filter layer, and the end of the fourth curved surface near the light-emitting substrate is configured to be flush with the end of the second color filter layer and the third color filter layer away from the light-emitting substrate;

[0105] The maximum dimension of the circumferential edge of the first color filter layer in the direction perpendicular to the substrate is the first thickness, which is set to be greater than the thickness of the second color filter layer and the third color filter layer.

[0106] The following examples illustrate the solution of this embodiment.

[0107] Figure 1 is a schematic diagram of a display device. As shown in Figure 1, the OLED display device may include a timing controller, a data driver, a scan driver, and a pixel array. The timing controller is connected to both the data driver and the scan driver. The data driver is connected to multiple data signal lines (D1 to Dn), and the scan driver is connected to multiple scan signal lines (S1 to Sm). The pixel array may include multiple sub-pixels Pxij. Each sub-pixel Pxij can be connected to a corresponding data signal line and a corresponding scan signal line, where i and j can be natural numbers. At least one sub-pixel Pxij may include at least a circuit unit and a display unit. The circuit unit may include at least a pixel driving circuit, which is connected to both the scan signal line and the data signal line. The display unit may include at least a light-emitting device, which is connected to the pixel driving circuit of the circuit unit. The sub-pixel Pxij may refer to a sub-pixel whose pixel driving circuit is connected to the i-th scan signal line and the j-th data signal line. In an exemplary embodiment, the timing controller may provide grayscale values ​​and control signals of specifications suitable for the data driver to the data driver, and may provide clock signals, scan start signals, etc., of specifications suitable for the scan driver to the scan driver. The data driver can use grayscale values ​​and control signals received from the timing controller to generate data voltages to be provided to data signal lines D1, D2, D3, ..., Dn. For example, the data driver can sample grayscale values ​​using a clock signal and apply data voltages corresponding to the grayscale values ​​to data signal lines D1 to Dn on a pixel-by-pixel basis, where n can be a natural number. The scan driver can generate scan signals to be provided to scan signal lines S1, S2, S3, ..., Sm by receiving clock signals, scan start signals, etc., from the timing controller. For example, the scan driver can sequentially provide scan signals with on-level pulses to scan signal lines S1 to Sm. For example, the scan driver can be configured as a shift register and can generate scan signals by sequentially transmitting scan start signals provided in the form of on-level pulses to the next stage circuit under the control of a clock signal, where m can be a natural number. In an exemplary embodiment, a pixel array can be disposed on a display substrate.

[0108] Figure 2 is a schematic diagram of a planar structure of a display device. As shown in Figure 2, the display device may include multiple pixel units P arranged in a matrix. At least one of the multiple pixel units P includes a first sub-pixel P1 emitting a first color light, a second sub-pixel P2 emitting a second color light, a third sub-pixel P3 emitting a third color light, and a fourth sub-pixel P4 emitting a fourth color light. Each of the four sub-pixels includes a pixel driving circuit and a light-emitting device. The pixel driving circuit in the sub-pixel is connected to a scan signal line and a data signal line, respectively. The pixel driving circuit is configured to receive the data voltage transmitted by the data signal line under the control of the scan signal line and output a corresponding current to the display light-emitting device. The display light-emitting device in the sub-pixel is connected to the pixel driving circuit of its respective sub-pixel and is configured to emit light of a corresponding brightness in response to the current output by the pixel driving circuit of its respective sub-pixel.

[0109] In an exemplary embodiment, the first sub-pixel P1 can be a red sub-pixel emitting red (R) light, the second sub-pixel P2 can be a blue sub-pixel emitting blue (B) light, the third sub-pixel P3 can be a green sub-pixel emitting green (G) light, and the fourth sub-pixel P4 can be a white sub-pixel emitting white (W) light. In an exemplary embodiment, the shape of the sub-pixels can be any one or more of triangles, squares, rectangles, rhombuses, trapezoids, parallelograms, pentagons, hexagons, and other polygons, and they can be arranged horizontally, vertically, in a square or diamond shape, etc., without limitation herein.

[0110] In an exemplary embodiment, a pixel unit may include three sub-pixels, which is not limited herein.

[0111] Figure 3 is a cross-sectional structural diagram of a display device, illustrating a structure that achieves full color using a white light + color filter approach. As shown in Figure 3, the display device may include: a substrate 101, a driving circuit layer 102 disposed on the substrate 101, a light-emitting structure layer 103 disposed on the side of the driving circuit layer 102 away from the substrate 101, a first encapsulation layer 104 disposed on the side of the light-emitting structure layer 103 away from the substrate 101, a color filter layer 105 disposed on the side of the first encapsulation layer 104 away from the substrate 101, a second encapsulation layer 106 disposed on the side of the color filter layer 105 away from the substrate 101, and a cover plate layer 107 disposed on the side of the second encapsulation layer 106 away from the substrate 101. In some possible implementations, the display device may include other film layers, which are not limited herein.

[0112] In an exemplary embodiment, the substrate 101 can be a bulk silicon substrate or a silicon-on-insulator (SOI) substrate. The driving circuit layer 102 can be fabricated on the substrate 101 using silicon semiconductor processes (e.g., CMOS processes). The driving circuit layer 102 can include multiple circuit units, each of which can include at least a pixel driving circuit. The pixel driving circuit is connected to scan signal lines and data signal lines, respectively. The pixel driving circuit can include multiple transistors and storage capacitors; only one transistor is shown as an example in Figure 3. The transistor can include a gate electrode G, a first electrode S, and a second electrode D. The gate electrode G, the first electrode S, and the second electrode D can be connected to corresponding connection electrodes via tungsten-filled vias (i.e., tungsten vias, W-vias), and can be connected to other electrical structures (such as traces) via the connection electrodes.

[0113] In an exemplary embodiment, the light-emitting structure layer 103 may include multiple light-emitting devices. Each light-emitting device may include at least an anode, an organic light-emitting layer, and a cathode. The anode is connected to the second electrode D of a transistor via a connecting electrode. The organic light-emitting layer is connected to the anode, the cathode is connected to the organic light-emitting layer, and the cathode is connected to a second power line. The organic light-emitting layer emits light under the drive of the anode and cathode. In an exemplary embodiment, the organic light-emitting layer may include a light-emitting layer (EML), and any one or more of the following: a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer (EBL), a hole blocking layer (HBL), an electron transport layer (ETL), and an electron injection layer (EIL). In an exemplary embodiment, for a light-emitting device emitting white light, the organic light-emitting layers of all sub-pixels may be a common layer connected together.

[0114] In an exemplary embodiment, the first encapsulation layer 104 and the second encapsulation layer 106 can be thin film encapsulation (TFE) to ensure that external moisture cannot enter the light-emitting structure layer. The cover layer 107 can be made of glass or a flexible plastic such as colorless polyimide.

[0115] In an exemplary embodiment, the color filter layer 105 may include a black matrix (BM) and color filters (CF). The color filters are respectively disposed on the red sub-pixel, green sub-pixel, and blue sub-pixel to filter the white light emitted by the light-emitting device into red (R) light, green (G) light, and blue (B) light. The black matrix may be located between adjacent color filters.

[0116] Figure 4 is an equivalent circuit diagram of a pixel driving circuit. In an exemplary embodiment, the pixel driving circuit can be a 3T1C, 4T1C, 4T2C, 5T1C, 5T2C, 6T1C, 7T1C, 9T2C, or 9T1C structure. As shown in Figure 4, the pixel driving circuit can be a 3T1C structure, including three transistors (first transistor T1 to third transistor T3) and one storage capacitor C. The pixel driving circuit is connected to four signal lines (scan signal line S, data signal line D, compensation signal line SE, and first power supply line VDD). The first transistor T1 is a switching transistor, the second transistor T2 is a driving transistor, and the third transistor T3 is a compensation transistor.

[0117] In an exemplary embodiment, each pixel driving circuit may include a first node N1 and a second node N2. The first node N1 is connected to the second electrode of the first transistor T1, the gate electrode of the second transistor T2, and the first terminal of the storage capacitor C, respectively. The second node N2 is connected to the second electrode of the second transistor T2, the second electrode of the third transistor T3, and the second terminal of the storage capacitor C, respectively.

[0118] In an exemplary embodiment, the first end of the storage capacitor C is connected to the first node N1, and the second end of the storage capacitor C is connected to the second node N2. The storage capacitor C is used to store the potential of the gate electrode of the second transistor T2.

[0119] In an exemplary embodiment, the gate electrode of the first transistor T1 is connected to the scan signal line S, the first electrode of the first transistor T1 is connected to the data signal line D, and the second electrode of the first transistor T1 is connected to the first node N1.

[0120] In an exemplary embodiment, the gate electrode of the second transistor T2 is connected to the first node N1, the first electrode of the second transistor T2 is connected to the first power line VDD, and the second electrode of the second transistor T2 is connected to the second node N2.

[0121] In an exemplary embodiment, the gate electrode of the third transistor T3 is connected to the scan signal line S, the first electrode of the third transistor T3 is connected to the compensation signal line SE, and the second electrode of the third transistor T3 is connected to the second node N2.

[0122] In an exemplary embodiment, the first electrode of the light-emitting device XL is connected to the second node N2, and the second electrode of the light-emitting device XL is connected to the second power line VSS.

[0123] In an exemplary embodiment, the light-emitting device XL may be an organic light-emitting diode (OLED), including a first electrode (anode), an organic light-emitting layer, and a second electrode (cathode) stacked together.

[0124] In an exemplary embodiment, the first transistor T1 is configured to receive the data voltage transmitted via the data signal line D under the control of the signal from the scan signal line S, store the data voltage in the storage capacitor C, and provide the data voltage to the gate electrode of the second transistor T2. The second transistor T2 is configured to generate a corresponding current at its second electrode under the control of the data signal received at its gate electrode. The second transistor T2 is also configured to provide a signal from the first power line VDD to the second node N2 under the control of the third transistor T3, thereby driving the display light-emitting device XL to emit light. The third transistor T3 is configured to extract the threshold voltage Vth and mobility of the second transistor T2 in response to a compensation timing sequence, in order to compensate for the threshold voltage Vth. The storage capacitor C is configured to store the potential of the gate electrode of the second transistor T2, and the light-emitting device XL is configured to emit light of a corresponding brightness in response to the current at the second electrode of the second transistor T2.

[0125] In an exemplary embodiment, the signal of the first power line VDD can be a continuously supplied high-level signal, and the signal of the second power line VSS can be a continuously supplied low-level signal.

[0126] In one exemplary embodiment, the first transistor T1, the second transistor T2, and the third transistor T3 can be P-type transistors. In another exemplary embodiment, the first transistor T1, the second transistor T2, and the third transistor T3 can be N-type transistors. Using the same type of transistors in the pixel driving circuit can simplify the process flow, reduce the manufacturing difficulty of the display panel, and improve the product yield. In yet another exemplary embodiment, the first transistor T1, the second transistor T2, and the third transistor T3 can include both P-type and N-type transistors. For example, the first transistor T1 and the third transistor T3 can be P-type metal-oxide-semiconductor transistors (PMOS), and the second transistor T2 can be an N-type metal-oxide-semiconductor transistor (NMOS).

[0127] In an exemplary embodiment, the first transistor T1 to the third transistor T3 can be low-temperature polysilicon (LTPS) thin-film transistors (TFTs), or oxide thin-film transistors (OPTs), or a combination of both. The active layer of the LTPS TFT is made of low-temperature polysilicon (LTPS), while the active layer of the OPT TFT is made of oxide. LTPS TFTs have advantages such as high mobility and fast charging, while OPTs have advantages such as low leakage current. Integrating LTPS and OPTs onto a single display substrate, i.e., an LTPS+Oxide (LTPO) display substrate, leverages the advantages of both, enabling low-frequency driving, reducing power consumption, and improving display quality.

[0128] Silicon-based OLED microdisplays use integrated circuits to control the OLED, increasing resolution (typically reaching over 3000 ppi). However, the fabrication of OLED displays presents significant challenges. For example, traditional fine metal masks (FMMs) can only achieve a maximum PPI of around 800. This means that silicon-based OLED displays cannot be deposited using a side-by-side (SBS) method, requiring other methods to separate the OLED pixels. These separation methods include, but are not limited to, tall fences (TF) and dig-on-wafer (DOW) holes. However, these methods can only separate the light-emitting devices at the anode, not during the evaporation process.

[0129] Silicon-based OLED microdisplays can only use white light devices. To improve the performance, brightness, and lifespan of silicon-based OLED microdisplays, tandem OLED devices with two or more light-emitting units can be used. A charge generation layer (CGL) connects the upper and lower light-emitting units in series, achieving a superimposed light emission effect on the device, successfully improving important optoelectronic performance indicators such as current efficiency, output brightness, and operating lifespan. White light devices can achieve full-color display by using three-color photoresist as described above, and lenses can be used to focus the light and amplify its brightness. The applicant found that the transmittance of current photoresist is only about 20%, especially the blue photoresist, which often has a transmittance of less than 20%. Furthermore, the lenses are uniform in shape and size, resulting in the output blue light being slightly less bright than other colors. To solve this problem, silicon-based OLED microdisplays typically focus on improving the efficiency of blue light by providing different current densities to different color pixels to ensure that the final synthesized white light pixel is around (0.31, 0.33). Therefore, the relatively weaker blue light requires more current, which increases the load on the blue light-emitting unit during use. This results in the blue light-emitting unit having a shorter lifespan than the red and green light-emitting units, affecting the lifespan of the display device. It also causes an increase in the red and green light components during use, making the screen gradually turn yellow and affecting the display effect.

[0130] Figure 5 is a cross-sectional schematic diagram of a display panel according to an exemplary embodiment of this invention. As shown in Figure 5, the display panel may include a light-emitting substrate 1, a color filter layer 3, and a lens layer 5. The light-emitting substrate 1 may include a substrate 101 and a light-emitting structure 26, which emits initial light. The color filter layer 3 may be disposed on the light-emitting substrate 1, filtering the initial light into multiple monochromatic lights of different colors. The lens layer 5 may be disposed on the side of the color filter layer 3 away from the light-emitting substrate 1. The lens layer 5 amplifies the brightness of the multiple monochromatic lights and compensates for brightness differences between them. The lens layer 5 outputs multiple amplified rays of different colors, with the brightness difference between the multiple amplified rays being less than a preset difference. Therefore, in this embodiment, the lens layer 5 compensates for brightness differences, resulting in a more balanced distribution of different colors of light and a more balanced current distribution among the various light-emitting units. This reduces the load on individual light-emitting units, increases lifespan, reduces color shift during product use, and improves product uniformity.

[0131] In some exemplary embodiments, as shown in FIG5, the light-emitting substrate 1 may include a substrate 101 and a light-emitting structure 26 disposed on the substrate 101. The second direction is perpendicular to the substrate 101 and also perpendicular to the light-emitting substrate. The light-emitting structure 26 is located on one side of the substrate 101 in the second direction. The light-emitting structure 26 includes a plurality of light-emitting elements and a pixel definition layer 7 separating the light-emitting elements. Each light-emitting element may include a stacked first electrode 6, an organic light-emitting layer 12, and a second electrode 13. The pixel definition layer 7 is disposed on the first electrode 6 and may have a plurality of pixel openings 8. Each pixel opening 8 may expose at least a portion of the surface of a corresponding first electrode 6. At least a portion of the organic light-emitting layer 12 may be disposed within a pixel opening 8 and connected to the corresponding first electrode 6. The second electrode 13 may be disposed on and connected to the organic light-emitting layer 12. The organic light-emitting layer 12, driven by the first electrode 6 and the second electrode 13, can emit light of a corresponding color. The organic light-emitting layers 12 of each light-emitting element extend continuously in a first direction and are arranged in the same layer. The first direction is perpendicular to the second direction and parallel to the substrate 101. The organic light-emitting layer 12 can be two or more stacked light-emitting units. The charge generation layer connects two adjacent light-emitting units in series. The light emitted by the organic light-emitting layer 12 is white initial light, which shines in the second direction away from the substrate 101.

[0132] In some exemplary embodiments, as shown in FIG5, the display panel further includes an encapsulation layer 2, which may be located on the side of the light-emitting structure 26 away from the substrate 101. The encapsulation layer 2 may be a multilayer structure stacked in the second direction, and the encapsulation layer 2 may be made of inorganic materials, organic materials, or a mixture of organic and inorganic materials. The encapsulation layer 2 can ensure that external moisture cannot enter the light-emitting element.

[0133] In some exemplary embodiments, as shown in FIG5, the color filter layer 3 may include a first color filter layer 14, a second color filter layer 15, and a third color filter layer 16. The first color filter layer 14 is configured to filter white light into a first monochromatic light, the second color filter layer 15 is configured to filter white light into a second monochromatic light, and the third color filter layer 16 is configured to filter white light into a third monochromatic light. The first, second, and third monochromatic lights have different colors. The first monochromatic light can be blue, the second monochromatic light can be red, and the third monochromatic light can be green, but this is not limited to these. For example, the first monochromatic light can be blue, the second monochromatic light can be green, and the third monochromatic light can be red; or the first monochromatic light can be red, the second monochromatic light can be blue, and the third monochromatic light can be green; or the first monochromatic light can be green, the second monochromatic light can be red, and the third monochromatic light can be blue; or the first monochromatic light can be green, the second monochromatic light can be red, and the third monochromatic light can be blue; or the first monochromatic light can be green, the second monochromatic light can be blue, and the third monochromatic light can be red.

[0134] In some exemplary embodiments, as shown in FIG5, the first color filter layer 14, the second color filter layer 15, and the third color filter layer 16 are arranged in an array on a plane parallel to the substrate 101, and the first color filter layer 14, the second color filter layer 15, and the third color filter layer 16 are respectively arranged corresponding to different pixel openings 8 in a first direction. The plurality of pixel openings 8 may include a first opening 9, a second opening 10, and a third opening 11. The orthographic projection of the first opening 9 onto the substrate 101 may lie within the orthographic projection of the first color filter layer 14 onto the substrate 101, the orthographic projection of the second opening 10 onto the substrate 101 may lie within the orthographic projection of the second color filter layer 15 onto the substrate 101, and the orthographic projection of the third opening 11 onto the substrate 101 may lie within the orthographic projection of the third color filter layer 16 onto the substrate 101. The light-emitting element located at the first opening 9 may be a first light-emitting element 20, the light-emitting element located at the second opening 10 may be a second light-emitting element 21, and the light-emitting element located at the third opening 11 may be a third light-emitting element 22. Thus, the first light-emitting element 20, the second light-emitting element 21, and the third light-emitting element 22 all emit white initial light. The initial light emitted by the first light-emitting element 20 is filtered into first monochromatic light after passing through the first color filter layer 14; the initial light emitted by the second light-emitting element 21 is filtered into second monochromatic light after passing through the second color filter layer 15; and the initial light emitted by the third light-emitting element 22 is filtered into first monochromatic light after passing through the third color filter layer 16.

[0135] In some exemplary embodiments, as shown in FIG5, the display panel further includes a filling layer 4, which may be located between the lens layer 5 and the color filter layer 3, and covers the surface of the color filter layer 3 near the lens layer 5. The filling layer 4 can adjust the position of each lens 27 in a second direction, which is perpendicular to the substrate 101. In some exemplary embodiments, the filling layer 4 can compensate for the height difference between the first color filter layer 14, the second color filter layer 15, and the third color filter layer 16, and the ends of the plurality of lenses 27 near the light-emitting substrate 1 are on the same plane parallel to the light-emitting substrate. For example, if the heights of the first color filter layer 14, the second color filter layer 15, and the third color filter layer 16 are different, causing the end faces of the first color filter layer 14, the second color filter layer 15, and the third color filter layer 16 away from the light-emitting substrate 1 to be uneven, the filling layer 4 can smooth out the height difference, and the surface of the filling layer 4 away from the substrate 101 can be a plane parallel to the substrate 101, with the plurality of lenses 27 on the same plane. However, this is not the only limitation. The filling layer 4 can compensate for the height difference between the first lens 17, the second lens 18, and the third lens 19. For example, the ends of the first lens 17, the second lens 18, and the third lens 19 away from the light-emitting substrate 1 are on the same plane parallel to the light-emitting substrate 1. Regardless of whether the first color filter layer 14, the second color filter layer 15, and the third color filter layer 16 are the same, or whether the heights of the first lens 17, the second lens 18, and the third lens 19 are different, the thickness of the filling layer 4 can be adjusted so that the ends of the first lens 17, the second lens 18, and the third lens 19 away from the light-emitting substrate 1 are on the same plane. In some exemplary embodiments, the filling layer 4 is located between the lens layer 5 and the color filter layer 3, but the position of each lens 27 in the second direction is not adjusted.

[0136] In some exemplary embodiments, as shown in FIG5, the lens layer 5 includes a plurality of lenses 27 arranged in an array and spaced apart on a plane parallel to the substrate 101. The plurality of lenses 27 may include at least one first lens 17, at least one second lens 18, and at least one third lens 19. The first lens 17, the second lens 18, and the third lens 19 are configured to transmit monochromatic light of different colors. The brightness amplification gain of the first lens 17, the second lens 18, and the third lens 19 may be different. Brightness amplification gain refers to the increase in output light brightness relative to input light brightness. The end faces of the plurality of lenses 27 near the light-emitting substrate 1 may be flush, that is, the distance between the end of the plurality of lenses 27 near the light-emitting substrate 1 and the light-emitting substrate 1 is equal. The filling layer 4 compensates for the height difference between the first color filter layer 14, the second color filter layer 15, and the third color filter layer 16, but is not limited to this. For example, the distance between the end of the plurality of lenses 27 near the light-emitting substrate 1 and the light-emitting substrate 1 may not be equal. Lens 27 and pixel opening 8 correspond one-to-one. The orthographic projection of lens 27 onto substrate 101 lies within the orthographic projection of pixel opening 8 onto substrate 101. Moreover, the orthographic projection of the center of pixel opening 8 onto substrate 101 overlaps with the orthographic projection of the center of lens 27 onto substrate 101, meaning the center of pixel opening 8 is collinear with the center of lens 27 in the second direction. The orthographic projection of first lens 17 onto substrate 101 lies within the orthographic projection of first color filter layer 14 onto substrate 101, and also within the orthographic projection of first opening 9 onto substrate 101. The orthographic projection of second lens 18 onto substrate 101 lies within the orthographic projection of second color filter layer 15 onto substrate 101, and also within the orthographic projection of second opening 10 onto substrate 101. The orthographic projection of third lens 19 onto substrate 101 lies within the orthographic projection of third color filter layer 16 onto substrate 101, and also within the orthographic projection of third opening 11 onto substrate 101.

[0137] In some exemplary embodiments, as shown in FIG5, the first color filter layer 14 may be blue adhesive, and the filtered first monochromatic light may be blue light; the second color filter layer 15 may be red adhesive, and the filtered second monochromatic light may be red light; the third color filter layer 16 may be red adhesive, and the filtered third monochromatic light may be red light. When the thickness is uniform, the transmittance of the blue adhesive is less than that of the red and green adhesives, so that when initial light of the same brightness passes through the first color filter layer 14, the second color filter layer 15, and the third color filter layer 16, the brightness of the first monochromatic light is less than that of the second and third monochromatic lights, creating a brightness difference, making the blue light dimmer. However, this is not limited to this; for example, the transmittance of both the blue and green adhesives is less than that of the red adhesive, so that when initial light of the same brightness passes through the first color filter layer 14, the second color filter layer 15, and the third color filter layer 16, the brightness of both the first and third monochromatic lights is less than that of the second monochromatic light, also creating a brightness difference.

[0138] In some exemplary embodiments, as shown in FIG5, when the brightness of the first monochromatic light is less than that of the second and third monochromatic lights, the differences between the first lens 17, the second lens 18, and the third lens 19 can compensate for the brightness difference, making the brightness of the output light approximately the same. That is, the brightness of the first amplified light (blue light) output by the first lens 17, the second amplified light (red light) output by the second lens 18, and the third amplified light (green light) output by the third lens 19 tends to be the same, and the preset difference between any two data can be zero. The differences between the first lens 17, the second lens 18, and the third lens 19 can be: the brightness amplification gain of the first lens 17 is greater than the brightness amplification gain of the second lens 18, and is also greater than the brightness amplification gain of the third lens 19. In some exemplary embodiments, the brightness amplification gain of the second lens 18 is equal to the brightness amplification gain of the third lens 19.

[0139] In some exemplary embodiments, as shown in FIG5, the end face of each lens 27 away from the substrate 101 may be a curved surface protruding in the direction away from the substrate 101, such that the lens 27 forms a convex lens structure on the side away from the substrate 101. The end face of the first lens 17 away from the substrate 101 may be a first curved surface 23, the end face of the second lens 18 away from the substrate 101 may be a second curved surface 24, and the end face of the third lens 19 away from the substrate 101 may be a sixth curved surface 25. The size of the lens 27 and the curvature of the curved surface of the lens 27 away from the substrate 101 will affect the lens 27; for example, the larger the size of the lens 27, the greater the brightness amplification gain of the lens 27; and for example, when the size of the lens 27 is the same, the greater the curvature of the curved surface of the lens 27 away from the substrate 101, the greater the brightness amplification gain of the lens 27.

[0140] In some exemplary embodiments, as shown in FIG5, the height of lens 27 may be the maximum dimension of lens 27 in the second direction, and the width of lens 27 may be the maximum dimension of lens 27 in the direction parallel to substrate 101 (i.e., the first direction). The height of lens 27 may be 1 micrometer to 3 micrometers, the width of lens 27 may be 2 micrometers to 9 micrometers, and the spacing between adjacent lenses 27 may be 0.3 micrometers to 1.5 micrometers.

[0141] Figure 6 is a partially enlarged schematic diagram of point A in Figure 5, and Figure 7 is a partially enlarged schematic diagram of point B in Figure 5. In some exemplary embodiments, as shown in Figures 5 and 6, the first curved surface 23, the second curved surface 24, and the sixth curved surface 25 all extend towards the substrate 101 and to the filling layer 4, making the first lens 17, the second lens 18, and the third lens 19 all incomplete spherical shapes. The tangent line of the first curved surface 23 at the point near the filling layer 4 on the cross section of the first curved surface 23 on the plane perpendicular to the substrate 101 is the first tangent line (C1). The angle between the first tangent line (C1) and the surface where the lens is located (i.e., the surface of the filling layer 4 away from the substrate 101) can be α, and α can be 90°. The first tangent line (C1) is in the same direction as the second direction, that is, perpendicular to the substrate 101, which makes the viewing angle of the first lens 17 change greatly, but is not limited to this, for example, 30° < α < 120°. In some exemplary embodiments, as shown in Figures 5 and 8, the tangent line of the sixth curved surface 25 at the point near the filling layer 4 on the cross section of the plane perpendicular to the base 101 is the second tangent line (C7). The angle between the second tangent line (C7) and the surface where the lens is located can be β, which can be less than α, but is not limited thereto, and can be equal to or greater than α.

[0142] In some exemplary embodiments, as shown in FIG5, the height (H1) of the first lens 17 may be the maximum dimension of the first lens 17 in the second direction, the height (H2) of the second lens 18 may be the maximum dimension of the second lens 18 in the second direction, and the height (H3) of the third lens 19 may be the maximum dimension of the third lens 19 in the second direction. The height (H1) of the first lens 17 may be greater than the height (H2) of the second lens 18, and the height (H2) of the second lens 18 may be equal to the height (H3) of the third lens 19, such that the size of the first lens 17 is greater than the size of the second lens 18 and the third lens 19, the size of the second lens 18 and the third lens 19 are the same, and the brightness amplification gain of the first lens 17 is greater than the brightness amplification gain of the second lens 18 and the third lens 19.

[0143] In some exemplary embodiments, as shown in FIG5, the width of the first lens 17 (i.e., the first width S1) may be the maximum dimension of the first lens 17 in the first direction, the width of the second lens 18 (the second width S2) may be the maximum dimension of the second lens 18 in the first direction, and the width of the third lens 19 (the third width S3) may be the maximum dimension of the third lens 19 in the first direction. The first width S1 may be greater than the second width S2, and the second width S2 may be equal to the third width S3, such that the size of the first lens 17 is greater than the size of the second lens 18 and the third lens 19, the size of the second lens 18 and the third lens 19 are the same, and the brightness amplification gain of the first lens 17 is greater than the brightness amplification gain of the second lens 18 and the third lens 19.

[0144] Figure 8 is a cross-sectional schematic diagram of another display panel according to this exemplary embodiment. In some exemplary embodiments, as shown in Figure 8, the first lens 17, the second lens 18, and the third lens 19 are not spherical, but have curved surfaces only on the end faces away from the substrate 101, namely the first curved surface 23, the second curved surface 24, and the sixth curved surface 25. The height (H1) of the first lens 17 is equal to the height (H2) of the second lens 18, and the height (H2) of the second lens 18 is equal to the height (H3) of the third lens 19. The first width S1 can be equal to the second width S2 and the third width S3, so that the height and width of the three lenses 27 are the same. The curvature of the first curved surface 23 is greater than the curvature of the second curved surface 24 and the curvature of the sixth curved surface 25, and the curvature of the second curved surface 24 is equal to the curvature of the sixth curved surface 25, so that the brightness amplification gain of the first lens 17 is greater than the brightness amplification gain of the second lens 18 and the third lens 19.

[0145] In some exemplary embodiments, as shown in FIG5, when the brightness of the first monochromatic light is less than that of the second monochromatic light and the third monochromatic light, the first lens 17 amplifies the brightness of the first monochromatic light and adjusts the first amplified light (blue light) to be equal to the brightness of the second amplified light (red light) output by the second lens 18 and the brightness of the third amplified light (green light) output by the third lens 19, thereby compensating for the brightness differences between multiple monochromatic lights.

[0146] Figure 9 is a top view of the display panel in Figure 5. In some exemplary embodiments, as shown in Figures 5 and 9, the first lens 17, the second lens 18, and the third lens 19 are arranged in a matrix on a plane formed by the first direction and the third direction. The row direction of the matrix is ​​consistent with the first direction, the column direction of the matrix is ​​consistent with the third direction, and the third direction is perpendicular to both the first and second directions. The second lens 18 and the third lens 19 are located on both sides of the first lens 17 in the first direction. The distance between the first lens 17 and the second lens 18 is the first spacing (T1), and the distance between the first lens 17 and the third lens 19 is the second spacing (T1'). The first spacing (T1) can be the minimum distance between the first lens 17 and the second lens 18 in the direction parallel to the light-emitting substrate 1 (i.e., the first direction), and the second spacing (T1') can be the minimum distance between the first lens layer 4 and the third lens 19 in the direction parallel to the light-emitting substrate 1 (i.e., the first direction). The first spacing (T1) can be equal to the second spacing (T1'), making the distribution of the lenses 27 more uniform and beneficial to the uniformity of light emission.

[0147] Figure 10 is a top view of another display panel according to this exemplary embodiment. In some exemplary embodiments, as shown in Figure 10, the first lens 17, the second lens 18, and the third lens 19 are arranged in an array, and the lenses 27 are staggered in the third direction. A first lens 17, a second lens 18, and a third lens 19 constitute a lens group. In a lens group, the second lens 18 and the third lens 19 are respectively located on both sides of the first lens 17 in the second direction. Multiple lens groups are arranged on the plane formed by the first direction and the third direction. The distance between the first lens 17 and the second lens 18 is the first spacing (T1), and the distance between the first lens 17 and the third lens 19 is the second spacing (T1'). The first spacing (T1) can be equal to the second spacing (T1'), making the distribution of the lenses 27 more uniform, which is beneficial to the uniformity of light emission.

[0148] In some exemplary embodiments, as shown in FIG5, the spacing of each pixel opening 8 in the direction parallel to the substrate 101 (i.e., the first direction) is the same. For example, the distance between the first opening 9 and the second opening 10 is equal to the distance between the first opening 9 and the third opening 11. The orthographic projection of the center of the pixel opening 8 on the substrate 101 overlaps with the orthographic projection of the center of the first electrode 6 on the substrate 101, that is, the center of the pixel opening 8 and the center of the first electrode 6 are collinear in the second direction. The orthographic projection of the center of the lens 27 corresponding to the pixel opening 8 on the substrate 101 also overlaps, that is, the center of the pixel opening 8 and the center of the lens 27 corresponding to the pixel opening 8 are collinear in the second direction. The orthographic projection of the center of the color adhesive corresponding to the pixel opening 8 on the substrate 101 also overlaps, that is, the center of the pixel opening 8 and the center of the color adhesive corresponding to the pixel opening 8 are collinear in the second direction. For example, the orthographic projection of the center of the first opening 9 on the substrate 101 overlaps with the orthographic projection of the center of the first electrode 6 corresponding to the first opening 9 on the substrate 101; the orthographic projection of the center of the first opening 9 on the substrate 101 overlaps with the orthographic projection of the center of the first lens 17 on the substrate 101; and the orthographic projection of the center of the first opening 9 on the substrate 101 overlaps with the orthographic projection of the center of the first color filter layer 14 on the substrate 101. Similarly, the orthographic projection of the center of the second opening 10 on the substrate 101 overlaps with the orthographic projection of the center of the first electrode 6 corresponding to the second opening 10 on the substrate 101; the orthographic projection of the center of the second opening 10 on the substrate 101 overlaps with the orthographic projection of the center of the second lens 18 on the substrate 101; and the orthographic projection of the center of the second opening 10 on the substrate 101 overlaps with the orthographic projection of the center of the second color filter layer 15 on the substrate 101. For example, the orthographic projection of the center of the third opening 11 onto the substrate 101 overlaps with the orthographic projection of the center of the first electrode 6 corresponding to the third opening 11 onto the substrate 101; the orthographic projection of the center of the third opening 11 onto the substrate 101 overlaps with the orthographic projection of the center of the third lens 19 onto the substrate 101; and the orthographic projection of the center of the third opening 11 onto the substrate 101 overlaps with the orthographic projection of the center of the third color filter layer 16 onto the substrate 101.

[0149] In some exemplary embodiments, as shown in FIG5, the minimum distance (T2) between the first color filter layer 14 and the second lens 18 in the direction parallel to the light-emitting substrate 1 (first direction) may be equal to the minimum distance (T2') between the first color filter layer 14 and the third lens 19 in the direction parallel to the light-emitting substrate 1 (first direction).

[0150] Figure 11 is a cross-sectional schematic diagram of another display panel according to this exemplary embodiment. In some exemplary embodiments, as shown in Figure 11, the spacing of each pixel opening 8 in the direction parallel to the substrate 101 (first direction) is the same. For example, the distance between the first opening 9 and the second opening 10 is equal to the distance between the first opening 9 and the third opening 11. A straight line along the second direction and passing through the center of the first opening 9 is a first straight line C2, a straight line along the second direction and passing through the center of the second opening 10 is a second straight line C3, and a straight line along the second direction and passing through the center of the third opening 10 is a third straight line C4. The distance between the center of the first opening 9 and the center of the second opening 10 in the first direction can be a third distance (T3), and the distance between the center of the first opening 9 and the center of the third opening 11 in the first direction can be a fourth distance (T3'). The third distance (T3) is equal to the fourth distance (T3'). The orthographic projection of the center of the pixel opening 8 on the substrate 101 and the orthographic projection of the center of the first electrode 6 corresponding to the pixel opening 8 on the substrate 101 do not overlap, that is, the center of the pixel opening 8 and the center of the first electrode 6 corresponding to the pixel opening 8 are not collinear in the second direction. For example, the straight line along the second direction and passing through the center of the first electrode 6 corresponding to the first opening 9 is the fourth straight line C5, wherein the first straight line C2 and the fourth straight line C5 are parallel and do not coincide. The minimum distance (T2) between the first color filter layer 14 and the second lens 18 in the direction parallel to the light-emitting substrate 1 (first direction) can be less than the minimum distance (T2') between the first color filter layer 14 and the third lens 19 in the direction parallel to the light-emitting substrate 1 (first direction). The distance between the first lens 17 and the second lens 18 is the first pitch (T1), and the distance between the first lens 17 and the third lens 19 is the second pitch (T1'). The first pitch (T1) can be equal to the second pitch (T1').

[0151] Figure 12 is a cross-sectional schematic diagram of another display panel according to this exemplary embodiment. In some exemplary embodiments, as shown in Figure 12, the orthographic projection of the center of the pixel opening 8 onto the substrate 101 and the orthographic projection of the center of the first electrode 6 onto the substrate 101 do not overlap, that is, the center of the pixel opening 8 and the center of the first electrode 6 are not collinear in the second direction. The second opening 10 and the third opening 11 are respectively located on both sides of the first opening 9 in the first direction. The straight line extending along the second direction and passing through the center of the first color filter layer 14 is the fifth straight line C6, which is the center line of the first color filter layer 14. The second opening 10 and the third opening 11 are symmetrical in the first direction according to the fifth straight line C6. The minimum distance (T2) between the first color filter layer 14 and the second lens 18 in the direction parallel to the light-emitting substrate 1 (first direction) can be equal to the minimum distance (T2') between the first color filter layer 14 and the third lens 19 in the direction parallel to the light-emitting substrate 1 (first direction). The distance between the first lens 17 and the second lens 18 is the first spacing (T1), and the distance between the first lens 17 and the third lens 19 is the second spacing (T1'). The first spacing (T1) is not equal to the second spacing (T1').

[0152] Figure 13 is a cross-sectional schematic diagram of another display panel according to this exemplary embodiment. In some exemplary embodiments, as shown in Figure 13, the thickness (H4) of the first color filter layer 14, the thickness (H5) of the second color filter layer 15, and the thickness (H6) of the third color filter layer 16 can increase sequentially, i.e., H4 < H5 < H6. The thickness (H4) of the first color filter layer 14 can be the maximum dimension of the first color filter layer 14 in the direction perpendicular to the light-emitting substrate 1 (i.e., the second direction), the thickness of the second color filter layer 15 is set to the maximum dimension of the second color filter layer 15 in the direction perpendicular to the light-emitting substrate 1 (i.e., the second direction), and the thickness of the third color filter layer 16 is set to the maximum dimension of the third color filter layer 16 in the direction perpendicular to the light-emitting substrate 1 (i.e., the second direction). The thickness difference between the first color filter layer 14 and the second color filter layer 15 is set to be less than or equal to 0.8 micrometers, i.e., (H5-H4)≤0.8μm; the thickness difference between the second color filter layer 15 and the third color filter layer 16 is set to be less than or equal to 0.8 micrometers, i.e., (H6-H5)≤0.8μm. Among the thicknesses (H4) of the first color filter layer 14, (H5) of the second color filter layer 15, and (H6) of the third color filter layer 16, the greater the thickness, the lower the transmittance, resulting in the lowest brightness of the third monochromatic light transmitted through the third color filter layer 16.

[0153] In some exemplary embodiments, as shown in FIG13, the widths of the first lens 17, the second lens 18, and the third lens 19 increase sequentially, so that the brightness amplification gain of the first lens 17, the second lens 18, and the third lens 19 need to be set to increase sequentially. The brightness amplification gain of the third lens 19 is relatively large, so that the third lens 19 can compensate for the lower brightness of the third monochromatic light, achieving equivalent brightness of each color of light. The width of the first lens 17 can be a first width S1, the width of the second lens 18 can be a second width S2, and the width of the third lens 19 can be a third width S3, wherein S1 < S2 < S3. The third lens 19 has a larger external size, so that the brightness amplification gain of the third lens 19 is relatively large. The difference between the first width S1 and the second width S2 is less than or equal to 1.5 micrometers, that is, (S2-S1)≤1.5μm; the difference between the second width S2 and the third width S3 is set to be less than or equal to 1.5 micrometers, that is, (S3-S2)≤1.5μm.

[0154] In some exemplary embodiments, as shown in FIG13, the first lens 17, the second lens 18, and the third lens 19 are not flush with the end faces of the first lens 17, the second lens 18, and the third lens 19 near the substrate 101 because the thicknesses of the first color filter layer 14 (H4), the second color filter layer 15 (H5), and the third color filter layer 16 (H6) are different.

[0155] Figure 14 is a schematic diagram of another lens according to this exemplary embodiment. In some exemplary embodiments, as shown in Figure 14, the refractive index of the filling layer 4 may be greater than the refractive index of the lens layer 5, and the refractive index of the filling layer 4 may be less than the refractive index of the color filter layer 3, such that the refractive indices of the color filter layer 3, the filling layer 4, and the lens layer 5 decrease sequentially. The filling layer 4 is provided with a third curved surface 31, and the orthographic projection of at least one lens 27 on the substrate may overlap with the orthographic projection of the third curved surface 31 on the substrate. The third curved surface 31 can focus the monochromatic light transmitted through the filling layer toward the lens 27. In some exemplary embodiments, multiple third curved surfaces 31 may be provided, and the multiple third curved surfaces 31 are arranged along a direction parallel to the substrate, and the multiple third curved surfaces 31 are configured as multiple curved surfaces with different curvatures. In some exemplary embodiments, as shown in Figure 14, a fourth curved surface 28 may be provided on the color filter layer 3, and the filling layer 3 covers the fourth curved surface 28. The orthographic projection of the fourth curved surface 28 on the substrate is arranged to overlap with the orthographic projection of the third curved surface 31 on the substrate. In some exemplary embodiments, as shown in FIG14, the lens 27 may cover part or all of the third curved surface 31, and is provided with a fifth curved surface 29 that matches the third curved surface 31.

[0156] Figure 15 is a first fabrication schematic diagram of the color filter layer according to this exemplary embodiment, Figure 16 is a second fabrication schematic diagram of the color filter layer according to this exemplary embodiment, and Figure 17 is a schematic diagram of another display panel according to this exemplary embodiment. In some exemplary embodiments, as shown in Figures 14 to 16, at least one of the first color filter layer 14, the second color filter layer 15, and the third color filter layer 16 may be provided with a fourth curved surface 28. For example, the end face of the first color filter layer 14 away from the substrate 101 may be a curved surface, i.e., the fourth curved surface 28. The end face of the first lens 17 away from the substrate 101 is a curved surface, i.e., the first curved surface 23, and the end face of the first lens 17 near the substrate 101 is a curved surface, i.e., the fifth curved surface 29. The fifth curved surface 29 and the fourth curved surface 28 are arranged concentrically. The fifth curved surface 29 may be formed by the material of the first lens 17 following the shape of the fourth curved surface 28. Thus, the first lens 17 forms a convex lens structure at both ends in the first direction, and the height of the first lens 17 is relatively large compared to the height of other lenses. Meanwhile, the filling layer 4 is provided with a third curved surface 31, which can correspond to the fourth curved surface 28 and the fifth curved surface 29. The orthographic projection of the third curved surface 31 on the substrate is located within the orthographic projection of the fourth curved surface 28 on the substrate. The material of the third curved surface 31 is also formed according to the shape of the fourth curved surface 28.

[0157] In some exemplary embodiments, as shown in Figures 13 to 16, light passing through the color filter layer 3 is filtered into monochromatic light. The monochromatic light passes through the fourth curved surface 28 and enters the filling layer 4. The refractive index of the filling layer 4 is close to that of the first lens 17. The filling layer 4 then focuses the light through the third curved surface 31, performing the first step of enhancing the light brightness. Subsequently, after passing through the filling layer 4, the light enters the first lens 17, which further amplifies the light brightness. Thus, the light passes through the color filter layer 3 until it exits from the first lens 17, undergoing two brightness enhancement processes.

[0158] In some exemplary embodiments, as shown in Figures 14 to 16, the fourth curved surface 28 may be located on the first color filter layer 14. The end of the fourth curved surface 28 near the light-emitting substrate may be flush with the ends of the second color filter layer 15 and the third color filter layer 16 away from the light-emitting substrate. That is, the thickness of the middle part of the first color filter layer 14 may be the minimum thickness (H4) of the first color filter layer 14, where H4 = H5 = H6. The maximum dimension of the circumferential edge of the first color filter layer in the second direction is the first thickness (H7), which may be greater than the thickness (H5) of the second color filter layer and the thickness (H6) of the third color filter layer.

[0159] In some exemplary embodiments, as shown in Figures 14 to 16, during the fabrication of the color filter layer, a second color filter layer 15 and a third color filter layer 16 are first fabricated, with a first gap 30 reserved between the second color filter layer 15 and the third color filter layer 16 for fabricating the first color filter layer 14. Subsequently, the first color filter layer 14 is formed. During the formation of the first color filter layer 14, the first color filter layer 14 may cover the portions of the second color filter layer 15 and the third color filter layer 16 that are away from the end faces of the substrate 101, such that the top of the first color filter layer 14 protrudes from both ends relative to the middle portion in the second direction, forming a recessed fourth curved surface 28.

[0160] In some exemplary embodiments, as shown in Figures 14 to 16, only the first lens 17 has a fifth curved surface 29, while the second lens 18 and the third lens 19 do not. However, this is not a limitation; for example, one of the second lens 18 and the third lens 19 may also have a fifth curved surface 29. The heights (H1) of the first lens 17, the second lens 18, and the third lens 19 may increase sequentially, i.e., H1 > H2 > H3, such that the brightness amplification gain of the first lens 17, the second lens 18, and the third lens 19 decrease sequentially. The difference between the heights (H1) of the first lens 17 and the second lens 18 (H2) is less than or equal to 1 micrometer, and the difference between the heights (H2) of the second lens 18 and the third lens 19 (H3) is less than or equal to 1 micrometer. The ratio between the brightness amplification gain of the first lens 17 and the second lens 18 is set to 1 to 1.5, and the ratio between the brightness amplification gain of the second lens 18 and the third lens 19 is set to 1 to 1.5.

[0161] In some exemplary embodiments, a fabrication method applied to the aforementioned display panel includes forming multiple lenses. The lens formation process can involve forming lenses in a single step using a photomask. The photomask is designed with differentiated aperture sizes and light transmittance for different pixels, resulting in multiple lenses with different shapes. The photomask can be a halftone mask (HTM). An HTM utilizes a film with a certain optical transmittance to achieve partial light transmission and is mainly used in TFT panel production. Halftone masks can achieve graphic structures including fully transparent, completely opaque, and partially transparent effects, and their graphic accuracy indicators are higher than other types of photomasks. Alternatively, the lens formation process can involve forming different lenses multiple times. For example, one type of lens can be formed using a photomask, and then another different type of lens can be formed using another photomask, thus completing the fabrication process for all lenses.

[0162] In some exemplary embodiments, a display device includes the display panel of the above embodiments. The display panel can be an OLED display panel with an integrated touch structure. The display device can be any product or component with display and touch functions, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0163] The accompanying drawings in this disclosure only illustrate the structures involved in this disclosure; other structures can be referred to with common design. Unless otherwise specified, the embodiments of this disclosure, i.e., the features in the embodiments, can be combined with each other to obtain new embodiments. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A display panel, wherein, include: A light-emitting substrate includes a substrate and a light-emitting structure, wherein the light-emitting structure is configured to emit initial light; A color filter layer is disposed on the light-emitting substrate, and the color filter layer is configured to filter the initial light into multiple monochromatic lights of different colors; A lens layer is disposed on the side of the color filter layer away from the light-emitting substrate. The lens layer is configured to amplify the brightness of multiple monochromatic lights and compensate for the brightness differences between the multiple monochromatic lights. The lens layer outputs multiple amplified light rays of different colors, and the brightness difference between the multiple amplified light rays is less than a preset difference.

2. The display panel according to claim 1, wherein, The lens layer includes a plurality of lenses spaced apart in a first direction, the plurality of lenses including at least one first lens and at least one second lens, the first lens and the second lens being configured to transmit monochromatic light of different colors, the brightness amplification gain of the first lens being greater than the brightness amplification gain of the second lens, and the first direction being parallel to the light-emitting substrate.

3. The display panel according to claim 2, wherein, The plurality of lenses further include at least one third lens, wherein the monochromatic light transmitted through the third lens is configured to have a different color than the monochromatic light transmitted through the first lens and the second lens; The brightness amplification gain of the first lens is greater than that of the third lens; Alternatively, the brightness amplification gain of the third lens may be set to be less than that of the second lens.

4. The display panel according to claim 2, wherein, The end face of the first lens away from the light-emitting substrate is a first curved surface, and the end face of the second lens away from the light-emitting substrate is a second curved surface. The curvature of the first curved surface is greater than the curvature of the second curved surface. Alternatively, the maximum size of the first lens in the second direction is set to be greater than the maximum size of the second lens in the second direction, and the second direction is perpendicular to the light-emitting substrate; Alternatively, the maximum size of the first lens in the first direction may be set to be greater than the maximum size of the second lens in the first direction.

5. The display panel according to claim 3, wherein, The color filter layer includes a first color filter layer, a second color filter layer, and a third color filter layer. The first color filter layer is configured to filter the initial light into a first monochromatic light, the second color filter layer is configured to filter the initial light into a second monochromatic light, and the third color filter layer is configured to filter the initial light into a third monochromatic light. The orthographic projection of the first lens onto the substrate lies within the orthographic projection of the first color filter layer onto the substrate; The orthographic projection of the second lens onto the substrate lies within the orthographic projection of the second color filter layer onto the substrate; The orthogonal projection of the third lens onto the substrate lies within the orthogonal projection of the third color filter layer onto the substrate.

6. The display panel according to claim 5, wherein, The first monochromatic light is set to blue light, and the second monochromatic light is set to red or green light; The transmittance of the first color filter layer is less than that of the second color filter layer, and the brightness of the first monochromatic light is less than that of the second monochromatic light.

7. The display panel according to claim 5, wherein, The light-emitting structure includes a first electrode and a pixel definition layer arranged sequentially along a direction away from the substrate, and the color filter layer is disposed on the side of the pixel definition layer away from the substrate; The pixel definition layer has multiple pixel openings, each pixel opening being configured to expose a portion of the surface of the first electrode. The orthographic projection of the lens onto the substrate lies within the orthographic projection of the pixel opening onto the substrate, and the center of the pixel opening is collinear with the center of the lens in a direction perpendicular to the substrate.

8. The display panel according to claim 7, wherein, The minimum distance between the first lens and the second lens in the first direction is set to be equal to the minimum distance between the first lens and the third lens in the first direction.

9. The display panel according to claim 8, wherein, The center of the pixel aperture and the center of the first electrode are set to be collinear in the direction perpendicular to the substrate, and the minimum distance between the first color filter layer and the second lens in the first direction is set to be equal to the minimum distance between the first color filter layer and the third lens in the first direction.

10. The display panel according to claim 8, wherein, The center of the pixel opening and the center of the first electrode are not collinear in the direction perpendicular to the substrate; The plurality of pixel openings include a first opening, a second opening, and a third opening, wherein the orthographic projection of the first lens on the substrate is located within the orthographic projection of the first opening on the substrate, the orthographic projection of the second lens on the substrate is located within the orthographic projection of the second opening on the substrate, and the orthographic projection of the third lens on the substrate is located within the orthographic projection of the third opening on the substrate; The distance between the center of the first opening and the center of the second opening in the first direction is set to be equal to the distance between the center of the first opening and the center of the third opening in the first direction.

11. The display panel according to claim 7, wherein, The center of the pixel opening is not collinear with the center of the first electrode in the direction perpendicular to the substrate; The plurality of pixel openings include a first opening, a second opening, and a third opening, wherein the orthographic projection of the first lens on the substrate is located within the orthographic projection of the first opening on the substrate, the orthographic projection of the second lens on the substrate is located within the orthographic projection of the second opening on the substrate, and the orthographic projection of the third lens on the substrate is located within the orthographic projection of the third opening on the substrate; The second opening and the third opening are disposed on both sides of the first opening in the first direction, and the second opening and the third opening are disposed symmetrically in the first direction according to the center line of the first color filter layer; The minimum distance between the first color filter layer and the second lens in the first direction is set to be equal to the minimum distance between the first color filter layer and the third lens in the first direction.

12. The display panel according to claim 5, wherein, The thicknesses of the first color filter layer, the second color filter layer, and the third color filter layer are set to increase sequentially. The brightness amplification gain of the first lens, the brightness amplification gain of the second lens, and the brightness amplification gain of the third lens are set to increase sequentially. The thickness of the first color filter layer is set to the maximum dimension of the first color filter layer in the second direction, the thickness of the second color filter layer is set to the maximum dimension of the second color filter layer in the second direction, and the thickness of the third color filter layer is set to the maximum dimension of the third color filter layer in the second direction, wherein the second direction is perpendicular to the light-emitting substrate.

13. The display panel according to claim 12, wherein, The thickness difference between the first color filter layer and the second color filter layer is set to be less than or equal to 0.8 micrometers, and the thickness difference between the second color filter layer and the third color filter layer is set to be less than or equal to 0.8 micrometers.

14. The display panel according to claim 12, wherein, The maximum dimension of the first lens in the first direction is a first width, the maximum dimension of the second lens in the first direction is a second width, and the maximum dimension of the third lens in the first direction is a third width; The difference between the first width and the second width is less than or equal to 1.5 micrometers, and the difference between the second width and the third width is set to be less than or equal to 1.5 micrometers.

15. The display panel according to claim 5, wherein, It also includes a filler layer located between the lens layer and the color filter layer.

16. The display panel according to claim 15, wherein, The filling layer is configured to compensate for the height difference between the first color filter layer, the second color filter layer and the third color filter layer, and the ends of the plurality of lenses near the light-emitting substrate are on the same plane parallel to the light-emitting substrate; Alternatively, the filling layer is configured to compensate for the height difference between the first lens, the second lens, and the third lens, with the ends of the first lens, the second lens, and the third lens away from the light-emitting substrate located on the same plane parallel to the light-emitting substrate.

17. The display panel according to claim 15, wherein, The refractive index of the filling layer is set to be greater than that of the lens layer and less than that of the color filter layer.

18. The display panel according to claim 15, wherein, The filling layer has a third curved surface recessed into the light-emitting substrate, and at least one of the lenses is configured to overlap with the orthogonal projection of the third curved surface on the substrate. The third curved surface is configured to focus monochromatic light transmitted through the filling layer toward the lens.

19. The display panel according to claim 18, wherein, The third surface is provided in multiple ways, and the multiple third surfaces are arranged in a direction parallel to the base. The multiple third surfaces are provided as multiple surfaces with different curvatures.

20. The display panel according to claim 18, wherein, At least one of the first color filter layer, the second color filter layer, and the third color filter layer has a fourth curved surface recessed into the light-emitting substrate on the end face away from the light-emitting substrate; The filling layer covers the fourth curved surface, and the orthographic projection of the fourth curved surface on the substrate overlaps with the orthographic projection of the third curved surface on the substrate.

21. The display panel according to claim 18, wherein, One of the lenses is configured to cover the third curved surface, and a fifth curved surface matching the third curved surface is provided on the end face near the light-emitting substrate.

22. The display panel according to claim 20, wherein, The fourth curved surface is disposed on the first color filter layer, and the end of the fourth curved surface near the light-emitting substrate is configured to be flush with the end of the second color filter layer and the third color filter layer away from the light-emitting substrate. The maximum dimension of the circumferential edge of the first color filter layer in the direction perpendicular to the substrate is the first thickness, which is set to be greater than the thickness of the second color filter layer and the third color filter layer.

23. The display panel according to claim 22, wherein, The heights of the first lens, the second lens, and the third lens are set to decrease sequentially. The brightness amplification gain of the first lens, the brightness amplification gain of the second lens, and the brightness amplification gain of the third lens are set to decrease sequentially. The height of the first lens is set to the maximum size of the first lens in the direction perpendicular to the light-emitting substrate, the height of the second lens is set to the maximum size of the second lens in the direction perpendicular to the light-emitting substrate, and the height of the third lens is set to the maximum size of the third lens in the direction perpendicular to the light-emitting substrate.

24. The display panel according to claim 22, wherein, The difference between the height of the first lens and the height of the second lens is less than or equal to 1 micrometer, and the difference between the height of the second lens and the height of the third lens is less than or equal to 1 micrometer; The ratio between the brightness amplification gain of the first lens and the brightness amplification gain of the second lens is set to 1 to 1.5, and the ratio between the brightness amplification gain of the second lens and the brightness amplification gain of the third lens is set to 1 to 1.

5.

25. A display device, wherein, Includes the display panel as described in any one of claims 1 to 24.

Images