Display panel and preparation method therefor, and display device

Abstract

A display panel and a preparation method therefor, and a display device. The display panel comprises a substrate (100), a color-filter structure layer (500) and a touch structure layer (600), wherein the color-filter structure layer (500) comprises a black matrix (501), and a plurality of matrix openings (502) comprise first openings (502-1) and second openings (502-2); the touch structure layer (600) comprises a first touch electrically conductive layer (602), the first touch electrically conductive layer (602) being configured to be of a mesh structure, and the mesh structure being provided with first through holes (604-1) that transmit light of a first color and second through holes (604-2) that transmit light of a second color; the minimum distance between the hole walls of the first through holes (604-1) and the opening walls of the first openings (502-1) in a direction parallel to the substrate is defined as a first distance (L1); the minimum distance between the hole walls of the second through holes (604-2) and the opening walls of the second openings (502-2) in the direction parallel to the substrate (100) is defined as a second distance (L2); and the first distance (L1) is set to be smaller than the second distance (L2).

Description

Display panel and its manufacturing method, display device

[0001] This application claims priority to Chinese Patent Application No. 202510190077.8, filed on February 20, 2025, entitled "Display Panel and Method for Preparing the Same, Display Device", the contents of which are to be understood as incorporated herein by reference. Technical Field

[0002] This article relates to display technology, and in particular to a display panel and its manufacturing method, and a display device. Background Technology

[0003] Organic light-emitting diodes (OLEDs) and quantum dot light-emitting diodes (QLEDs) are active light-emitting display devices with advantages such as self-illumination, wide viewing angle, high contrast, low power consumption, extremely high response speed, thinness, flexibility, and low cost. Summary of the Invention

[0004] 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.

[0005] This application provides a display panel, including:

[0006] Base;

[0007] A color filter structure layer is located on the substrate. The color filter structure layer includes a black matrix. The black matrix has a plurality of matrix openings. The plurality of matrix openings include a first opening for arranging a first filter and a second opening for arranging a second filter. The first filter is configured to filter light into a first color light, and the second filter is configured to filter light into a second color light.

[0008] A touch structure layer is located on the side of the color filter structure layer away from the substrate. The touch structure layer includes a first touch conductive layer. The first touch conductive layer is configured as a mesh structure. The mesh structure has a first through hole that transmits the first color light and a second through hole that transmits the second color light.

[0009] The first through hole and the first opening are arranged in a one-to-one correspondence. The orthographic projection of the first through hole on the substrate is located within the orthographic projection of the first opening on the substrate. The minimum distance between the hole wall of the first through hole and the opening wall of the first opening in the direction parallel to the substrate is set as a first distance.

[0010] The second through hole and the second opening are arranged in a one-to-one correspondence. The orthographic projection of the second through hole on the substrate is located within the orthographic projection of the second opening on the substrate. The minimum distance between the hole wall of the second through hole and the opening wall of the second opening in the direction parallel to the substrate is set as the second distance, and the first distance is set to be less than the second distance.

[0011] In some exemplary embodiments, the ratio of the second distance to the first distance is set to K1, where 1 < K1 < 1.9.

[0012] In some exemplary embodiments, the first distance is set to L1, the second distance is set to L2, and 1μm≤(L2-L1)≤4μm.

[0013] In some exemplary embodiments, 5.5 μm ≤ L1 < 7.5 μm.

[0014] In some exemplary embodiments, the black matrix is ​​provided with a third opening for arranging a third filter, the third filter being configured to filter light into a third color light;

[0015] The mesh structure includes a third through-hole through which the third color light passes;

[0016] The third through hole and the third opening are arranged in a one-to-one correspondence. The orthographic projection of the third through hole on the substrate is located within the orthographic projection of the third opening on the substrate. The minimum distance between the hole wall of the third through hole and the opening wall of the third opening in the direction parallel to the substrate is set as the third distance, and the first distance is set to be less than the third distance.

[0017] In some exemplary embodiments, the opening area of ​​the first opening is larger than the opening area of ​​the second opening.

[0018] In some exemplary embodiments, the first colored light is set to green light, and the second colored light is set to red light or blue light.

[0019] In some exemplary embodiments, the first touch conductive layer includes a plurality of first traces, which are arranged to cross each other on a plane parallel to the substrate and form the mesh structure to form the first through-hole and the second through-hole, and the width of the first traces is set to D, where D > 3 μm.

[0020] In some exemplary embodiments, D = 3.5 μm.

[0021] In some exemplary embodiments, a light-emitting structure layer is further included, the light-emitting structure layer being located between the substrate and the color filter structure layer;

[0022] The light-emitting structure layer includes a pixel definition layer with multiple pixel openings. The opening wall of each pixel opening includes a first inclined surface, and the orthographic projection of the first inclined surface on the substrate does not overlap with the orthographic projection of the black matrix on the substrate.

[0023] In some exemplary embodiments, the angle between the first inclined plane and the first plane is set as a first included angle, which is greater than or equal to 32.5°, and the first plane is parallel to the base.

[0024] In some exemplary embodiments, the end of the first inclined surface closer to the base is a first end, the end of the first inclined surface farther from the base is a second end, and the minimum distance between the first end and the second end in the direction parallel to the base is set as a fourth distance;

[0025] The minimum distance between two adjacent pixel openings in the direction parallel to the base is set as the fifth distance, and the ratio of the fifth distance to the fourth distance is set as K2, where K2 > 1.5.

[0026] In some exemplary embodiments, the roughness of the first inclined surface is set to Ra, where 3 nm < Ra < 5 nm.

[0027] This application provides a method for manufacturing a display panel, including:

[0028] A light-emitting structure layer, a color filter structure layer, and a touch structure layer are formed on a substrate. The color filter structure layer is located on the substrate and includes a black matrix with multiple matrix openings. These openings include a first opening for arranging a first filter and a second opening for arranging a second filter. The first filter is configured to filter light into a first color, and the second filter is configured to filter light into a second color. The touch structure layer is located on the side of the color filter structure layer away from the substrate. The touch structure layer includes a first touch conductive layer, which is configured as a mesh structure. The mesh structure has a first channel for transmitting the first color light. The first through hole and the second opening are arranged in a one-to-one correspondence, the orthographic projection of the first through hole on the substrate is located within the orthographic projection of the first opening on the substrate, and the minimum distance between the hole wall of the first through hole and the opening wall of the first opening in the direction parallel to the substrate is set as a first distance; the second through hole and the second opening are arranged in a one-to-one correspondence, the orthographic projection of the second through hole on the substrate is located within the orthographic projection of the second opening on the substrate, and the minimum distance between the hole wall of the second through hole and the opening wall of the second opening in the direction parallel to the substrate is set as a second distance, and the first distance is set to be less than the second distance.

[0029] In some exemplary embodiments, a light-emitting structure layer, a color filter structure layer, and a touch structure layer are formed on a substrate, including:

[0030] A pixel definition film is deposited on the substrate, and the pixel definition film is patterned to form a first pattern, the first pattern including a pixel definition layer with multiple pixel openings;

[0031] The pixel definition layer is irradiated by the curing instrument for a preset time, and the preset time is set to be greater than 10 seconds.

[0032] In some exemplary embodiments, a light-emitting structure layer, a color filter structure layer, and a touch structure layer are formed on a substrate, including:

[0033] A pixel definition film is deposited on the substrate, and the pixel definition film is patterned to form a first pattern, the first pattern including a pixel definition layer with multiple pixel openings;

[0034] The curing instrument irradiates the pixel definition layer with a preset illuminance of 35 mW / cm² to cure the pixel definition layer. 2 Up to 50mW / cm 2 .

[0035] This application provides a display device including the display panel described above.

[0036] The display panel of this application embodiment can effectively improve the color separation problem in the dark by shrinking the first through-hole on the first touch conductive layer, allowing less ambient light to reach the light-emitting structure layer. The display panel of this application embodiment can also improve the exposure and mask offset of the patterning process, enabling the formation of the first touch conductive layer on the original mask, avoiding mask redesign and saving costs. Furthermore, the display panel of this application embodiment can improve the color separation problem in the dark by thickening the traces of the first touch conductive layer, allowing less ambient light to reach the light-emitting structure layer. Finally, the display panel of this application embodiment can improve the color separation problem in the dark by adjusting the tilt angle and roughness of the pixel opening walls, trapping ambient light entering the display panel within the screen. This proposal is closely aligned with actual product applications, is simple to operate in terms of process, has high mass production feasibility, and has high practical application value.

[0037] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. Other advantages of this application can be realized and obtained by means of the embodiments described in the description and the accompanying drawings.

[0038] Overview of the attached figures

[0039] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0040] Figure 1 is a schematic diagram of a display device;

[0041] Figure 2 is a schematic diagram of the planar structure of a display panel;

[0042] Figure 3 is a schematic cross-sectional view of a display device;

[0043] Figure 4 is a plan view of a display panel according to an exemplary embodiment of the present invention;

[0044] Figure 5 is a schematic diagram of the cross section along direction aa in Figure 4;

[0045] Figure 6 is a schematic diagram of the cross section along the bb direction in Figure 4;

[0046] Figure 7 is a schematic diagram of ambient light for a display panel according to an exemplary embodiment of this invention;

[0047] Figure 8 is a schematic diagram of the cc-direction section in Figure 4;

[0048] Figure 9 is a magnified view of part A in Figure 5;

[0049] Figure 10 is a schematic diagram of the first inclined plane in Figure 9.

[0050] Detailed Explanation

[0051] This application describes several embodiments, but these descriptions are exemplary and not limiting, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with, or may replace, any feature or element of any other embodiment.

[0052] This application includes and contemplates combinations of features and elements known to those skilled in the art. The embodiments, features, and elements disclosed in this application can also be combined with any conventional features or elements to form unique inventive solutions. Any feature or element of any embodiment can also be combined with features or elements from other inventive solutions to form another unique inventive solution. Therefore, it should be understood that any feature shown and / or discussed in this application can be implemented individually or in any suitable combination. Therefore, the embodiments are not limited except by the limitations imposed by the appended claims and their equivalents. Furthermore, various modifications and changes can be made within the scope of the appended claims.

[0053] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. As will be understood by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation of the claims. Moreover, the claims concerning the method and / or process should not be limited to the steps performed in the written order, and those skilled in the art will readily understand that these orders can be varied and still remain within the spirit and scope of the embodiments of this application.

[0054] This exemplary embodiment provides a display panel, including:

[0055] Base;

[0056] A color filter structure layer is located on the substrate. The color filter structure layer includes a black matrix. The black matrix has a plurality of matrix openings. The plurality of matrix openings include a first opening for arranging a first filter and a second opening for arranging a second filter. The first filter is configured to filter light into a first color light, and the second filter is configured to filter light into a second color light.

[0057] A touch structure layer is located on the side of the color filter structure layer away from the substrate. The touch structure layer includes a first touch conductive layer. The first touch conductive layer is configured as a mesh structure. The mesh structure has a first through hole that transmits the first color light and a second through hole that transmits the second color light.

[0058] The first through hole and the first opening are arranged in a one-to-one correspondence. The orthographic projection of the first through hole on the substrate is located within the orthographic projection of the first opening on the substrate. The minimum distance between the hole wall of the first through hole and the opening wall of the first opening in the direction parallel to the substrate is set as a first distance.

[0059] The second through hole and the second opening are arranged in a one-to-one correspondence. The orthographic projection of the second through hole on the substrate is located within the orthographic projection of the second opening on the substrate. The minimum distance between the hole wall of the second through hole and the opening wall of the second opening in the direction parallel to the substrate is set as the second distance, and the first distance is set to be less than the second distance.

[0060] In some exemplary embodiments, the ratio of the second distance to the first distance is set to K1, where 1 < K1 < 1.9.

[0061] In some exemplary embodiments, the first distance is set to L1, the second distance is set to L2, and 1μm≤(L2-L1)≤4μm.

[0062] In some exemplary embodiments, 5.5 μm ≤ L1 < 7.5 μm.

[0063] In some exemplary embodiments, the first touch conductive layer includes a plurality of first traces, which are arranged to cross each other on a plane parallel to the substrate and form the mesh structure to form the first through-hole and the second through-hole, and the width of the first traces is set to D, where D > 3 μm.

[0064] In some exemplary embodiments, a light-emitting structure layer is further included, the light-emitting structure layer being located between the substrate and the color filter structure layer;

[0065] The light-emitting structure layer includes a pixel definition layer with multiple pixel openings. The opening wall of each pixel opening includes a first inclined surface, and the orthographic projection of the first inclined surface on the substrate does not overlap with the orthographic projection of the black matrix on the substrate.

[0066] In some exemplary embodiments, the angle between the first inclined plane and the first plane is set as a first included angle, which is greater than or equal to 32.5°.

[0067] In some exemplary embodiments, the roughness of the first inclined surface is set to Ra, where 3 nm < Ra < 5 nm.

[0068] Figure 1 is a schematic diagram of a display device. As shown in Figure 1, the display device may include a timing controller, a data driver, a scan driver, a light-emitting driver, and a pixel array. The timing controller is connected to the data driver, the scan driver, and the light-emitting driver. The data driver is connected to multiple data signal lines (D1 to Dn), the scan driver is connected to multiple scan signal lines (S1 to Sm), and the light-emitting driver is connected to multiple light-emitting signal lines (E1 to Eo). The pixel array may include multiple sub-pixels ij, where i and j can be natural numbers. At least one sub-pixel ij may include a circuit unit and a light-emitting device connected to the circuit unit. The circuit unit may include a pixel circuit, which is connected to the scan signal lines, the light-emitting signal lines, and the data signal lines. In some exemplary embodiments, the timing controller may provide grayscale values ​​and control signals of specifications suitable for the data driver to the data driver, clock signals, scan start signals, etc. of specifications suitable for the scan driver to the scan driver, and clock signals, transmit stop signals, etc. of specifications suitable for the light-emitting driver to the light-emitting 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 the data voltage corresponding to the grayscale value to data signal lines D1 to Dn in unit rows, where n can be a natural number. The scan driver can receive clock signals, scan start signals, etc., from the timing controller to generate scan signals to be provided to scan signal lines S1, S2, S3, ..., Sm. 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 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. The LED driver can receive clock signals, transmit stop signals, etc., from the timing controller to generate transmit signals to LED signal lines E1, E2, E3, ..., Eo. For example, the light-emitting driver can sequentially provide transmit signals with cutoff level pulses to the light-emitting signal lines E1 to Eo. For example, the light-emitting driver can be configured as a shift register and can generate transmit signals by sequentially transmitting transmit stop signals in the form of cutoff level pulses to the next stage circuit under the control of a clock signal, where o can be a natural number. In some exemplary embodiments, a pixel array can be disposed on a display panel.

[0069] Figure 2 is a schematic diagram of a planar structure of a display panel. As shown in Figure 2, the display panel may include multiple pixel units P arranged in a matrix. At least one pixel unit P may include a first sub-pixel P1 emitting a first color light, a second sub-pixel P2 emitting a second color light, and a third sub-pixel P3 emitting a third color light. Each sub-pixel may include a circuit unit and a light-emitting device. The circuit unit may include at least a pixel circuit. The pixel circuit is connected to a scan signal line, a light-emitting signal line, and a data signal line, respectively. The pixel circuit is configured to receive the data voltage transmitted by the data signal line under the control of the scan signal line and the light-emitting signal line, and output a corresponding current to the light-emitting device. The light-emitting device in each sub-pixel is connected to the pixel circuit of the sub-pixel, and the light-emitting device is configured to emit light of a corresponding brightness in response to the current output by the pixel circuit of the sub-pixel.

[0070] In some exemplary embodiments, the first sub-pixel P1 may be a red sub-pixel (R) emitting red light, the second sub-pixel P2 may be a blue sub-pixel (B) emitting blue light, and the third sub-pixel P3 may be a green sub-pixel (G) emitting green light. In some exemplary embodiments, the shape of the sub-pixels may be rectangular, rhomboid, pentagonal, or hexagonal, and the three sub-pixels may be arranged horizontally side-by-side, vertically side-by-side, or in a triangular arrangement, etc., which is not limited herein. In some exemplary embodiments, the first sub-pixel P1, the second sub-pixel P2, and the third sub-pixel P3 may be arranged along a straight line, but are not limited thereto. For example, the first sub-pixel P1, the second sub-pixel P2, and the third sub-pixel P3 may be arranged in a non-linear arrangement such as a triangular arrangement. In some exemplary embodiments, the pixel unit P may include four sub-pixels, and the four sub-pixels may be arranged horizontally side-by-side, vertically side-by-side, or in a square arrangement, etc., which is not limited herein.

[0071] Figure 3 is a cross-sectional schematic diagram of a display device, illustrating a structure that achieves full color using a combination of white light and a color filter. As shown in Figure 3, the display device may include: a substrate 100, a circuit structure layer 200 disposed on the substrate 100, a light-emitting structure layer 300 disposed on the side of the circuit structure layer 200 away from the substrate 100, a first encapsulation layer 400 disposed on the side of the light-emitting structure layer 300 away from the substrate 100, a color filter structure layer 500 disposed on the side of the first encapsulation layer 400 away from the substrate 100, a touch structure layer 600 disposed on the side of the color filter structure layer 500 away from the substrate 100, and a cover layer 700 disposed on the side of the touch structure layer 600 away from the substrate 100. In some possible implementations, the silicon-based OLED display device may include other film layers, which are not limited herein.

[0072] In some exemplary embodiments, the substrate 100 may be a polyimide (PI) substrate, but is not limited thereto; for example, it may be a glass substrate. The circuit structure layer 200 may be fabricated on the substrate 100 using silicon semiconductor processes (e.g., CMOS processes). The circuit structure layer 200 may include multiple circuit units, each of which may include at least a pixel circuit. The pixel circuits are connected to scan signal lines and data signal lines, respectively. The pixel circuits may include multiple transistors and storage capacitors. The transistors may include a gate electrode, a first electrode, and a second electrode. The gate electrode, the first electrode, and the second electrode may be connected to corresponding connection electrodes via tungsten metal-filled vias (i.e., tungsten vias, W-vias), and may be connected to other electrical structures (such as traces) via the connection electrodes.

[0073] In some exemplary embodiments, the light-emitting structure layer 300 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 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 some exemplary embodiments, 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).

[0074] In some exemplary embodiments, the first encapsulation layer 400 may employ thin film encapsulation (TFE) to prevent external moisture from entering the light-emitting structure layer. The first encapsulation layer 400 may employ a three-layer stacked structure of inorganic / organic / inorganic to further prevent external moisture from entering the light-emitting element. However, this embodiment is not limited to this. For example, the encapsulation structure layer may employ a five-layer stacked structure of inorganic / organic / inorganic / organic / inorganic.

[0075] In some exemplary embodiments, the color filter structure layer 500 may include a black matrix (BM) and color filters (CF). The color filters are respectively disposed on red sub-pixels, green sub-pixels, and blue sub-pixels, filtering 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. This example uses the color filter formed by integrating the color filter into the encapsulation layer (COE) technology, which can significantly reduce the thickness compared to a polarizer, achieving better flexibility. Moreover, compared to the elimination of natural light by a circular polarizer, both the black matrix and the filter units of the color filter structure layer 500 have light absorption functions. When external natural light shines, the natural light passes through the filter unit and illuminates the sub-pixels below it. After being reflected by the sub-pixels, the natural light is emitted from the filter unit together with the light generated by the sub-pixels themselves, which can improve the light extraction rate of natural light, thereby achieving the function of reducing power consumption. The touch structure layer 600 can be located on the side of the color filter structure layer 500 away from the substrate 100. The cover layer 700 can be made of glass or a flexible plastic such as colorless polyimide. The cover layer 700 is located on the side of the touch structure layer 600 away from the substrate 100.

[0076] Color separation in dark states refers to the phenomenon of uneven color or color shift in a display device when it is in a dark state (i.e., displaying black or low-brightness images). This phenomenon is usually related to display technology, optical design, or material properties, and is particularly common in OLED or LCD displays. The applicant discovered that products using COE technology exhibit colored reflected light in ambient light applications when the screen is off, i.e., color separation. This phenomenon is caused by the separation of reflection directions of different colors of light due to anode flatness, and diffraction caused by the openings in the pixel definition layer and black matrix. Currently, methods to improve color separation in dark states in COE products mainly focus on three directions, but the effects of these three directions are not ideal. For example, the first improvement method, specifically improving anode flatness by thickening the flattening layer, can slightly improve color separation, but the final effect is not ideal. Another example is the second improvement method, specifically reducing the openings in the pixel definition layer and black matrix, which can effectively improve color separation, but lifespan, power consumption, and optical reliability all deteriorate. For example, the third improvement method is to adopt a circular pixel design, which requires a complete redesign of the mask, resulting in a huge increase in cost, and there is no reference data on light characteristics, display quality, and reliability.

[0077] The technical solutions of the embodiments of the present invention will be described in detail below through specific examples.

[0078] Figure 4 is a plan view of a display panel according to an exemplary embodiment of the present invention. Figure 5 is a cross-sectional view along the aa direction in Figure 4, and Figure 6 is a cross-sectional view along the bb direction in Figure 4. This embodiment provides a display panel, as shown in Figures 4 to 6. The display panel includes a substrate 100, a color filter structure layer 500, and a touch structure layer 600. The color filter structure layer 500 may be located on the substrate 100, and the touch structure layer 600 may be located on the side of the color filter structure layer 500 away from the substrate 100. The color filter structure layer 500 may include a black matrix 501. The black matrix 501 has a plurality of matrix openings 502. The plurality of matrix openings 502 may include a first opening 502-1 for arranging a first filter 503-1, and a second opening 502-2 for arranging a second filter 503-2. The first filter 503-1 is configured to filter light into a first color light, and the second filter 503-2 is configured to filter light into a second color light. The touch structure layer 600 includes a first touch conductive layer 602, which is configured as a mesh structure. The mesh structure has a first through-hole 604-1 that transmits a first color light and a second through-hole 604-2 that transmits a second color light. The first through-hole 604-1 and the first opening 502-1 can be arranged in a one-to-one correspondence. The orthographic projection of the first through-hole 604-1 on the substrate 100 can be located within the orthographic projection of the first opening 502-1 on the substrate 100. The minimum distance between the hole wall of the first through-hole 604-1 and the opening wall of the first opening 502-1 in the direction parallel to the substrate 100 is set as a first distance (L1). The second through-hole 604-2 and the second opening 502-2 can be arranged in a one-to-one correspondence. The orthographic projection of the second through-hole 604-2 on the substrate 100 lies within the orthographic projection of the second opening 502-2 on the substrate 100. The minimum distance between the hole wall of the second through-hole 604-2 and the opening wall of the second opening 502-2 in the direction parallel to the substrate 100 is set as the second distance (L2), and the first distance (L1) is set to be less than the second distance (L2). Thus, the display panel of this embodiment can effectively improve the color separation problem in the dark state by shrinking the first through-hole 604-1 on the first touch conductive layer, allowing less ambient light to reach the light-emitting structure layer. Moreover, the display panel of this embodiment can achieve the formation of the first touch conductive layer on the basis of the original mask by improving the exposure and mask offset of the patterning process, avoiding mask modification and saving costs.

[0079] In some exemplary embodiments, as shown in Figures 4 to 6, the display panel further includes a light-emitting structure layer 300, which may be located between the substrate 100 and the color filter structure layer 500. The light-emitting structure layer 300 may include a pixel definition layer 301 and a plurality of light-emitting elements. For example, each light-emitting element may include a stacked first electrode 303, an organic light-emitting layer 304, and a second electrode 305. The first electrode 303 of the light-emitting element may be an anode, and the first electrode 303 may be disposed on the substrate 100. The pixel definition layer 301 is disposed on the first electrode 303 and the substrate 100, and the pixel definition layer 301 may have a plurality of pixel openings 302, each pixel opening 302 exposing at least a portion of the surface of a corresponding first electrode 303. The organic light-emitting layer 304 may be disposed within a pixel opening 302 and connected to the corresponding first electrode 303. The second electrode 305 may be disposed on the organic light-emitting layer 304 and connected to the organic light-emitting layer 304. An isolation pillar layer (not shown in the figure) may also be provided on the side of the pixel definition layer 301 away from the substrate 100 and on the side of the organic light-emitting layer 304 close to the substrate 100. The isolation pillar layer may include multiple isolation pillars (PS).

[0080] In some exemplary embodiments, as shown in Figures 4 to 6, the organic light-emitting layer 304 can emit light of a corresponding color under the driving force of the first electrode 303 and the second electrode 305. In this example, the organic light-emitting layer 304 can uniformly emit white light. The organic light-emitting layer 304 of the light-emitting element may include an emitting layer (EML) and one or more films including a hole injection layer (HIL), a hole transport layer (HTL), a hole block layer (HBL), an electron block layer (EBL), an electron injection layer (EIL), and an electron transport layer (ETL). Under the voltage driving force of the first electrode 303 and the second electrode 305, the light-emitting characteristics of the organic material can be used to emit light at the required grayscale.

[0081] In some exemplary embodiments, as shown in Figures 4 to 6, a pixel unit may include four sub-pixels 306. The shape of the sub-pixels may be rectangular, rhomboid, pentagonal, or hexagonal. In this example, the sub-pixels 306 may be rectangular. The four sub-pixels 306 may include two first sub-pixels 306-1, one second sub-pixel 306-2, and one third sub-pixel 306-3. The first sub-pixel 306-1 may emit green light, the second sub-pixel 306-2 may emit red light, and the third sub-pixel 306-3 may emit blue light, but is not limited thereto. For example, the first sub-pixel 306-1 may emit green light, the second sub-pixel 306-2 may emit blue light, and the third sub-pixel 306-3 may emit red light. The four sub-pixels 306 may be arranged horizontally side-by-side, vertically side-by-side, or in a square arrangement. In this example, the four sub-pixels 306 may be arranged in a square arrangement. Each sub-pixel 306 may include a light-emitting device. For example, the first sub-pixel 306-1 may be a first light-emitting device, which may include a first electrode 303, a first light-emitting layer 304-1, and a second electrode 305; the second sub-pixel 306-2 may be a second light-emitting device, which may include a first electrode 303, a second light-emitting layer 304-2, and a second electrode 305; and the third sub-pixel 306-3 may be a third light-emitting device, which may include a first electrode 303, a third light-emitting layer 304-3, and a second electrode 305.

[0082] In some exemplary embodiments, as shown in Figures 4 to 6, a first encapsulation layer 400 may be present between the light-emitting structure layer 300 and the color filter structure layer 500, and the color filter structure layer 500 is fabricated on the first encapsulation layer 400. The color filter structure layer 500 may include a black matrix 501 (BM) and a color filter 503. The material of the black matrix 501 is opaque to light, while the material of the color filter 503 is translucent and can filter light. The color filter 503 may be divided into a first filter 503-1, a second filter 503-2, and a third filter 503-3, depending on the color of the filtered light. The color filters 503 correspond one-to-one with the light-emitting devices. For example, the first filter 503-1 may be arranged corresponding to the first light-emitting device, the second filter 503-2 may be arranged corresponding to the second light-emitting device, and the third filter 503-3 may be arranged corresponding to the third light-emitting device. A black matrix 501 separates different color filters 503, such as a first filter 503-1, a second filter 503-2, and a third filter 503-3. The black matrix 501 has holes to arrange the aforementioned color filters 503. The black matrix 501 has matrix openings 502 for arranging the color filters 503. The matrix openings 502 and pixel openings 302 are arranged in a one-to-one correspondence. That is, in the direction perpendicular to the substrate 100 (i.e., the third direction), the matrix openings 502 and pixel openings 302 correspond one-to-one, and the orthographic projection of the pixel openings 302 on the substrate 100 is located within the orthographic projection of the matrix openings 502 on the substrate 100. The matrix opening 502 can penetrate the black matrix 501 in a third-direction direction. The matrix opening 502 includes a first opening 502-1, a second opening 502-2, and a third opening 502-3. A first filter 503-1 can be arranged within the first opening 502-1, a second filter 503-2 can be arranged within the second opening 502-2, and a third filter 503-3 can be arranged within the third opening 502-3. The first filter 503-1 can filter the light emitted by the first light-emitting device into a first color light, the second filter 503-2 can filter the light emitted by the second light-emitting device into a second color light, and the third filter 503-3 can filter the light emitted by the third light-emitting device into a third color light. The first color of light can be green, the second color of light can be red, and the third color of light can be blue, but it is not limited to these. For example, the first color of light can be green, the second color of light can be blue, and the third color of light can be red; or the first color of light can be red, the second color of light can be green, and the third color of light can be blue.

[0083] In some exemplary embodiments, as shown in Figures 4 to 6, the opening area of ​​the second opening 502-2 may be equal to the opening area of ​​the third opening 502-3, and the opening area of ​​the first opening 502-1 may be greater than the opening area of ​​the second opening 502-2, so that more ambient light can shine from the first opening 502-1 onto the light-emitting structure layer 300. However, this is not the only possibility; for example, the opening areas of the first opening 502-1, the second opening 502-2, and the third opening 502-3 may all be the same.

[0084] In some exemplary embodiments, as shown in Figures 4 to 6, the touch structure layer 600 may be located within a touch buffer layer 601, a first touch conductive layer 602, and a touch encapsulation layer 603, arranged sequentially in a direction away from the substrate 100. The first touch conductive layer 602 may be a multilayer thin film structure, for example, a multilayer thin film structure composed of alternating titanium (Ti) and aluminum (Al), i.e., a multilayer stack in the form of Ti / Al / Ti or Ti / Al / Ti / Al / Ti. The first touch conductive layer 602 may be a mesh structure, unfolding on a plane parallel to the substrate 100, having a first through-hole 604-1, a second through-hole 604-2, and a third through-hole 604-3, which penetrate the first touch conductive layer 602 in a third direction. The first through hole 604-1 can be arranged in a one-to-one correspondence with the first opening 502-1, that is, the first through hole 604-1 and the first opening 502-1 correspond one-to-one in the third direction, and the orthographic projection of the first opening 502-1 on the substrate 100 is located within the orthographic projection of the first through hole 604-1 on the substrate 100; the second through hole 604-2 can be arranged in a one-to-one correspondence with the second opening 502-2, that is, the second through hole 604-2 and the second opening 502-2 correspond one-to-one in the third direction, and the orthographic projection of the second opening 502-2 on the substrate 100 is located within the orthographic projection of the second through hole 604-2 on the substrate 100; the third through hole 604-3 can be arranged in a one-to-one correspondence with the third opening 502-3, that is, the third through hole 604-3 and the third opening 502-3 correspond one-to-one in the third direction, and the orthographic projection of the third opening 502-3 on the substrate 100 is located within the orthographic projection of the third through hole 604-3 on the substrate 100.

[0085] In some exemplary embodiments, as shown in Figures 4 to 6, the first opening 502-1, the second opening 502-2, and the third opening 502-3 are all rectangular holes. The wall of the first opening 502-1 may be the first sidewall 504-1, the wall of the second opening 502-2 may be the second sidewall 504-2, and the wall of the third opening 502-3 may be the third sidewall 504-3. The first through hole 604-1, the second through hole 604-2, and the third through hole 604-3 are all rectangular holes. The wall of the first through hole 604-1 may be the first hole wall 605-1, the wall of the second through hole 604-2 may be the second hole wall 605-2, and the wall of the third through hole 604-3 may be the third hole wall 605-3. The first sidewall 504-1 and the first hole wall 605-1 are circumferentially spaced at the first opening 502-1, and the distance between the first sidewall 504-1 and the first hole wall 605-1 in the direction parallel to the base 100 is L1. The second sidewall 504-2 and the second hole wall 605-2 are circumferentially spaced at the second opening 502-2, and the distance between the second sidewall 504-2 and the second hole wall 605-2 in the direction parallel to the base 100 is L2. The third sidewall 504-3 and the third hole wall 605-3 are circumferentially spaced at the third opening 502-3, and the distance between the third sidewall 504-3 and the third hole wall 605-3 in the direction parallel to the base 100 is L3. In some exemplary embodiments, L2 = L3 > L1, but this is not limited to, for example, L2 ≠ L3, L3 > L1, L2 > L1. In some exemplary embodiments, the ratio of the second distance (L2) to the first distance (L1) is set to K1, where 1 < K1 < 1.9, i.e., 1 < (L2 / L1) < 1.9. In some exemplary embodiments, the difference between the second distance (L2) and the first distance (L1) is greater than or equal to 1 μm and less than or equal to 4 μm, i.e., 1 μm ≤ (L2 - L1) ≤ 4 μm. In some exemplary embodiments, the value of the first distance (L1) can be from 5.5 μm to 7.5 μm, where 5.5 μm ≤ L1 < 7.5 μm.

[0086] Figure 7 is a schematic diagram of ambient light in a display panel according to an exemplary embodiment of this invention. In some exemplary embodiments, as shown in Figure 7, since the opening area of ​​the first opening 502-1 is larger than the opening areas of other matrix openings 502, more ambient light can shine from the first opening 502-1 onto the light-emitting structure layer 300. In this example, the first through-hole 504-1 is recessed, so that the hole wall of the first through-hole 504-1 is close to the first opening 502-1. As shown by the dashed arrow, some ambient light can shine onto the first touch conductive layer 602 and be reflected to the outside, which can reduce the ambient light emitted to the light-emitting structure layer 300, thereby effectively alleviating the color separation phenomenon.

[0087] In some exemplary embodiments, as shown in Figures 4 to 6, the value of the first distance (L1) can be 6 μm, and the values ​​of the second distance (L2) and the third distance (L3) can be 9 μm. However, this is not limited to these values. For example, the value of the first distance (L1) can be 6.5 μm, and the values ​​of the second distance (L2) and the third distance (L3) can be 8.5 μm; or the value of the first distance (L1) can be 7.0 μm, and the values ​​of the second distance (L2) and the third distance (L3) can be 8.0 μm; or the value of the first distance (L1) can be 5.5 μm, and the values ​​of the second distance (L2) and the third distance (L3) can be 9.5 μm. The applicant conducted experiments, collecting data on lifespan, power consumption, reliability, and visual color separation effect. Option 1 can use an existing display panel, where the first distance (L1), second distance (L2), and third distance (L3) are all equal. In Option 2, the first distance (L1) can be 6μm, and the second and third distances (L3) can be 9μm. Neither Option 1 nor Option 2 showed a significant deterioration in lifespan, power consumption, or reliability. Option 1 achieved a visual color separation effect of LV2, while Option 2 achieved LV0. The degree of color separation is usually represented by the color separation LV (Level). The smaller the LV value, the lower the degree of color separation and the better the display effect. LV2 and LV0 are quantitative indicators of the degree of color separation; therefore, Option 2 has a lower degree of color separation. Thus, the display panel in this example shows significantly optimized color separation without affecting lifespan, power consumption, or reliability.

[0088] Figure 8 is a schematic cross-sectional view in the cc direction of Figure 4. In some exemplary embodiments, as shown in Figures 4, 5, 6, and 8, the first touch conductive layer 602 may include a plurality of first traces 606. The plurality of first traces 606 may be arranged intersectingly on a plane parallel to the substrate 100 and forming a mesh structure. The first traces 606 intersect to form a first through-hole 604-1, a second through-hole 604-2, and a second through-hole 604-3. In some exemplary embodiments, the width of the first trace 606 may be greater than or equal to 2.5 μm, that is, the width of the first trace 606 is D, where D≥2.5 μm. The width of the first trace 606 may be the dimension in a direction perpendicular to the extension direction of the first trace 606 and parallel to the substrate 100. For example, in the cc direction cross-section, the first trace 606 may extend along a second direction, and the width of the first trace 606 may be the dimension of the first trace 606 in a first direction. Both the first and second directions are parallel to the substrate 100, and the first direction is perpendicular to the second direction. In some exemplary embodiments, the width of the first trace 606 can be 3.5 μm, i.e., D = 3.5 μm. The width of the first trace 606 is larger than the current trace width (3 μm), making the hole wall of the first through hole 604-1 formed by the first trace 606 closer to the first opening 504-1. As shown by the dashed arrow, some ambient light can illuminate the first touch conductive layer 602 and be reflected to the outside, which can reduce the ambient light emitted to the light-emitting structure layer, thereby effectively alleviating the color separation phenomenon. However, it is not limited to this. For example, the width of the first trace 606 can be 3.2 μm, i.e., D = 3.2 μm; or the width of the first trace 606 can be 4 μm, i.e., D = 4 μm; or the width of the first trace 606 can be 3.7 μm, i.e., D = 3.7 μm.

[0089] Figure 9 is a partially enlarged schematic diagram of point A in Figure 5. In some exemplary embodiments, as shown in Figures 5 and 9, the opening wall of the pixel opening 302 includes an inclined first slope 302-1. The orthographic projection of the first slope 302-1 onto the substrate 100 does not overlap with the orthographic projection of the black matrix 501 onto the substrate 100. The opening area of ​​the pixel opening 302 increases linearly from the direction away from the substrate 100. The pixel opening 302 can be a speaker hole, and the cross-section of the pixel opening 302 in the plane perpendicular to the substrate 100 can be an inverted trapezoid. The included angle between the first slope 302-1 and the first plane (not shown in the figure) is set as a first included angle, which can be α. The first included angle is set to be greater than or equal to 32.5°, i.e., α ≥ 32.5°. The first plane (not shown in the figure) is parallel to the substrate 100. In this example, the first included angle can be 32.5°, i.e., α = 32.5°, so that the ambient light illuminating the first inclined surface 302-1 as shown in Figure 9 can be reflected between the black matrix 501 and the second electrode 305, trapping the ambient light entering the display panel within the screen, which can improve the color separation problem of the display panel in dark conditions. However, it is not limited to this; for example, α = 36.8°, or α = 45.2°, or α = 49.5°.

[0090] In some exemplary embodiments, as shown in Figures 5 and 9, the applicant tests the display panel of this example and a current display panel. Scheme 1 can be the current display panel, where α = 28.6° and the color separation level is LV3. Scheme 2 has α = 32.5° and the color separation level is LV1; Scheme 3 has α = 36.8° and the color separation level is LV1; Scheme 4 has α = 45.2° and the color separation level is LV0.5; Scheme 5 has α = 49.5° and the color separation level is LV0.5. The degree of color separation is usually expressed by color separation LV (Level). The smaller the color separation LV value, the lower the color separation level and the better the display effect. Color separation LV3, color separation LV1, and color separation LV0.5 are all quantitative indicators of color separation level. As can be seen, the color separation of Schemes 2 to 5 is significantly better than that of Scheme 1. The color separation of the display panel in this example is significantly optimized, and it does not affect the lifespan, power consumption, or reliability.

[0091] In some exemplary embodiments, as shown in Figures 5 and 9, the end of the first inclined surface 302-1 near the substrate 100 is designated as the first end 302-2, and the end of the first inclined surface 302-1 away from the substrate 100 is designated as the second end 302-3. The minimum distance between the first end 302-2 and the second end 302-3 in the direction parallel to the substrate 100 is set as a fourth distance, i.e., L4. In this example, the distance between the first end 302-2 and the second end 302-3 in the first direction can be L4. The minimum distance between two adjacent pixel openings 302 in the direction parallel to the substrate 100 is set as a fifth distance, i.e., L5. In this example, the distance between two adjacent pixel openings 302 in the first direction can be L5.

[0092] In some exemplary embodiments, as shown in Figures 5 and 9, the ratio of the fifth distance to the fourth distance is set to K2, i.e., K2 = (L5 / L4), where K2 > 1.5. In this example, L5 = 6 μm and L4 = 3.5 μm, but it is not limited to this. For example, L5 = 6 μm and L4 = 3 μm; or L5 = 6 μm and L4 = 2.5 μm; or L5 = 6 μm and L4 = 3.2 μm.

[0093] In some exemplary embodiments, as shown in Figures 5 and 9, the first included angle (α) is adjusted by controlling the curing process of the pixel definition layer 301. The first included angle (α) is positively correlated with the ultraviolet light irradiation time. The curing device can emit ultraviolet light, and ultraviolet light irradiation can cure the pixel definition layer 301. When the ultraviolet light irradiation time is 0s, the first included angle (α) can generally reach 28.6°. At this time, the first included angle (α) is relatively small. In the screen-off state, most of the ambient light can pass through the screen and be reflected outside the screen, resulting in color separation. If the ultraviolet light irradiation time is increased to 10s, the first included angle (α) will increase to 32.5°. If the ultraviolet light irradiation time is further increased to 20s, 30s, and 40s, the first included angle (α) can increase to 36.8°, 45.2°, and 49.5°, respectively.

[0094] Figure 10 is a schematic diagram of the first inclined surface in Figure 9. In some exemplary embodiments, as shown in Figure 10, the roughness of the first inclined surface 302-1 is set to Ra, where 3nm < Ra < 5nm, resulting in a relatively large roughness. When light shines on the first inclined surface 302-1, diffuse reflection occurs. As shown in Figure 10, when ambient light, indicated by the dashed arrow, shines on the first inclined surface 302-1, diffuse reflection occurs, reducing the reflectivity and changing the reflection direction. The screen film absorbs the reflected light, thus alleviating color separation.

[0095] In some exemplary embodiments, as shown in Figure 10, the applicant tests the display panel of this example and a current display panel. In Scheme 1, the roughness of the first inclined surface 302-1 can be roughness LV0, and the color separation level can be color separation LV3. In Scheme 2, the roughness of the first inclined surface 302-1 can be 3nm to 5nm, and the roughness level can be roughness LV0.5, while the color separation level can be LV1.5. The degree of color separation is usually represented by color separation LV (Level). The smaller the color separation LV value, the lower the color separation degree and the better the display effect. Color separation LV3 and color separation LV1.5 are both quantitative indicators of color separation degree. The degree of roughness is usually represented by roughness LV (Level). The smaller the roughness LV value, the smaller the roughness. Roughness LV0 and roughness LV0.5 are both quantitative indicators of color separation degree. Option 3 and Option 4 are also possible. In Option 3 and Option 4, the roughness levels are roughness LV1 and roughness LV2, respectively, both of which are greater than the roughness of Option 1. The color separation of Options 2 to 4 is better than that of Option 1. In this example, the color separation of the display panel is significantly optimized without affecting lifespan, power consumption, or reliability.

[0096] In some exemplary embodiments, as shown in FIG10, the curing process of the pixel definition layer 301 is controlled to adjust the curing device, which emits ultraviolet light. The ultraviolet light irradiates and cures the pixel definition layer 301. The greater the illuminance of the ultraviolet light, the greater the roughness of the first inclined surface 302-1. Illuminance refers to the luminous flux received per unit area, and is commonly used to describe the degree to which an object's surface is illuminated. When the ultraviolet light illuminance is 30 mW / cm²... 2 At this point, the roughness of the first inclined surface 302-1 can be roughness LV0, at which point color separation is obvious. If the ultraviolet light illuminance is increased to 35mW / cm², the color separation phenomenon will be more pronounced. 2 The roughness of the first inclined plane 302-1 will increase to roughness LV0.5, at which point the color separation phenomenon will weaken. If the ultraviolet light illuminance is further increased to 40mW / cm², the color separation phenomenon will be weakened. 2 50mW / cm 2 In this case, the roughness of the first inclined surface 302-1 can be roughness LV1 and roughness LV2, respectively. In this example, the ultraviolet light illuminance can be 35 mW / cm². 2 The roughness of the first inclined surface 302-1 is roughness LV0.5. The grayscale at startup is not significantly deteriorated, and the lifespan, power consumption, and reliability are not significantly deteriorated.

[0097] The following description uses the fabrication process of a display panel as an example. The "patterning process" described in this disclosure includes, for metallic, inorganic, or transparent conductive materials, processes such as photoresist coating, mask exposure, development, etching, and photoresist stripping; for organic materials, it includes processes such as organic material coating, mask exposure, and development. Deposition can be performed using any one or more of sputtering, evaporation, and chemical vapor deposition; coating can be performed using any one or more of spraying, spin coating, and inkjet printing; etching can be performed using any one or more of dry etching and wet etching. This disclosure does not limit the methods used. A "thin film" refers to a thin film made of a certain material on a substrate 100 using deposition, coating, or other processes. If the "thin film" does not require a patterning process during the entire fabrication process, it can also be called a "layer." If the "thin film" requires a patterning process during the entire fabrication process, it is called a "thin film" before the patterning process and a "layer" after the patterning process. The "layer" after the patterning process contains at least one "pattern." The phrase "A and B are arranged in the same layer" in this disclosure means that A and B are formed simultaneously through the same patterning process, and the "thickness" of the film layer is the dimension of the film layer in the direction perpendicular to the display panel. In the exemplary embodiments of this disclosure, "the orthographic projection of B is within the range of the orthographic projection of A" or "the orthographic projection of A includes the orthographic projection of B" means that the boundary of the orthographic projection of B falls within the boundary range of the orthographic projection of A, or the boundary of the orthographic projection of A overlaps with the boundary of the orthographic projection of B.

[0098] In an exemplary embodiment, the manufacturing process of the display panel may include the following steps.

[0099] Step 1: Form a light-emitting structure layer 300 on the substrate 100.

[0100] In some exemplary embodiments, as shown in FIG5, FIG6, FIG8, FIG9 and FIG10, forming a light-emitting structure layer 300 on a substrate 100 may include: depositing a first conductive film on the substrate 100, and patterning the first conductive film by a patterning process to form an anode electrode layer pattern, wherein the anode electrode layer pattern of each sub-pixel may include at least a first electrode 303.

[0101] In some exemplary embodiments, the first conductive film may be a metal material, a transparent conductive material, or a multilayer composite structure of a metal material and a transparent conductive material. The metal material may include any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo), or an alloy of the above metals. The transparent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO). The multilayer composite structure may be ITO / Al / ITO, etc.

[0102] Subsequently, a pixel definition film is coated on the substrate 100 on which the aforementioned pattern is formed, and the pixel definition film is patterned by a patterning process to form a first pattern. The first pattern includes a pixel definition layer 301, and each sub-pixel's pixel definition layer 301 is provided with a pixel opening 302. The pixel definition film inside the pixel opening 302 is removed to expose the surface of the first electrode 303.

[0103] Subsequently, the pixel definition layer 301 is cured by irradiating the pixel definition layer 301 with a curing instrument that emits ultraviolet light and can irradiate the pixel definition layer 301 according to a preset time and preset illuminance.

[0104] In some exemplary embodiments, the first included angle (α) is adjusted by controlling the curing process of the pixel definition layer 301. The first included angle (α) may be positively correlated with the ultraviolet light irradiation time. The curing device may emit ultraviolet light, and ultraviolet light irradiation may cure the pixel definition layer 301. If the preset time is 10s, the first included angle (α) will increase to 32.5°. If the preset times are 20s, 30s, and 40s, the first included angle (α) may increase to 36.8°, 45.2°, and 49.5°, respectively.

[0105] In some exemplary embodiments, the greater the ultraviolet light illuminance, the greater the roughness of the first inclined surface 302-1. For example, if the preset illuminance is 35 mW / cm²... 2 The roughness of the first inclined surface 302-1 is roughness LV0.5, and the grayscale at startup does not show significant deterioration, nor does the lifespan, power consumption, or reliability deteriorate significantly. However, it is not limited to this; for example, the preset illuminance can also be 40mW / cm². 2 and 50mW / cm 2 .

[0106] Subsequently, on the substrate 100 where the aforementioned pattern is formed, an organic light-emitting layer 304 located in each sub-pixel is formed by vapor deposition or inkjet printing. The organic light-emitting layer 304 is connected to the first electrode 303 through a pixel opening. 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).

[0107] Subsequently, a cathode pattern is formed by vapor deposition using an open photomask. The cathode pattern includes a second electrode 305, which is connected to the organic light-emitting layer 304. The second electrode 305 can be made of any one or more of magnesium (Mg), silver (Ag), aluminum (Al), copper (Cu), and lithium (Li), or an alloy made of any one or more of the above metals.

[0108] At this point, the pattern of the light-emitting structure layer 300 is complete. The next step is to prepare the first encapsulation structure layer 400 and the color filter structure layer 500.

[0109] Step 2: Form a touch structure layer 600 on the color filter structure layer 500.

[0110] In some exemplary embodiments, as shown in Figures 5, 6, 8, 9 and 10, forming a touch structure layer 600 on the color filter structure layer 500 may include: depositing a touch conductive film, and then forming a first touch conductive layer 602 by a patterning process.

[0111] In some exemplary embodiments, the width (D) of the first trace 606 can be adjusted by the amount of exposure in the patterning process that forms the first touch conductive layer 602. The smaller the exposure, the larger the width (D) of the first trace 606. In this example, the width (D) of the first trace 606 can be 3.5 μm.

[0112] In some exemplary embodiments, a mask shift can be used in the patterning process of forming the first touch conductive layer 602 to shrink the first via 604-1 and reduce the first distance (L1), making the first distance (L1) smaller than the second distance (L2). The first distance (L1) can be 6 μm.

[0113] After completing the touch structure 600, the cover layer 700 is formed, thus obtaining the display panel as shown in Figure 5.

[0114] In some exemplary embodiments, a display device includes the aforementioned display panel. The display device provided in this disclosure can be applied to electronic devices, which can be mobile phones, tablets, televisions, monitors, laptops, digital photo frames, navigators, in-vehicle displays, or any product or component with display functionality, such as wearable devices, smartwatches, smart bracelets, smart glasses, smart headphones, smart clothing, head-mounted displays, etc.

[0115] This application provides a method for manufacturing a display panel, including:

[0116] A light-emitting structure layer 300, a color filter structure layer 500, and a touch structure layer 600 are formed on a substrate 100. The color filter structure layer 500 is located on the substrate 100 and includes a black matrix 501. The black matrix 501 has a plurality of matrix openings 502. The plurality of matrix openings 502 include a first opening 502-1 for arranging a first filter 503-1 and a second opening 502-2 for arranging a second filter 503-2. The first filter 503-1 is configured to filter light into a first color light, and the second filter 503-2 is configured to filter light into a second color light. The touch structure layer 600 is located on the side of the color filter structure layer 500 away from the substrate 100. The touch structure layer 600 includes a first touch conductive layer 602. The first touch conductive layer 602 is configured as a mesh structure, and the mesh structure has a first through-hole 604 for transmitting the first color light. -1, and a second through hole 604-2 through which the second color light is transmitted; the first through hole 604-1 and the first opening 502-1 are arranged in a one-to-one correspondence, the orthographic projection of the first through hole 604-1 on the substrate 100 is located within the orthographic projection of the first opening 502-1 on the substrate 100, and the minimum distance between the hole wall of the first through hole 604-1 and the opening wall of the first opening 502-1 in the direction parallel to the substrate 100 is set as a first distance; the second through hole 604-2 and the second opening 502-2 are arranged in a one-to-one correspondence, the orthographic projection of the second through hole 604-2 on the substrate 100 is located within the orthographic projection of the second opening 502-2 on the substrate 100, and the minimum distance between the hole wall of the second through hole 604-2 and the opening wall of the second opening 502-2 in the direction parallel to the substrate 100 is set as a second distance, and the first distance is set to be less than the second distance.

[0117] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0118] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of those features.

[0119] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0120] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0121] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0122] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0123] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A display panel, wherein, include: Base; A color filter structure layer is located on the substrate. The color filter structure layer includes a black matrix. The black matrix has a plurality of matrix openings. The plurality of matrix openings include a first opening for arranging a first filter and a second opening for arranging a second filter. The first filter is configured to filter light into a first color light, and the second filter is configured to filter light into a second color light. A touch structure layer is located on the side of the color filter structure layer away from the substrate. The touch structure layer includes a first touch conductive layer. The first touch conductive layer is configured as a mesh structure. The mesh structure has a first through hole that transmits the first color light and a second through hole that transmits the second color light. The first through hole and the first opening are arranged in a one-to-one correspondence. The orthographic projection of the first through hole on the substrate is located within the orthographic projection of the first opening on the substrate. The minimum distance between the hole wall of the first through hole and the opening wall of the first opening in the direction parallel to the substrate is set as a first distance. The second through hole and the second opening are arranged in a one-to-one correspondence. The orthographic projection of the second through hole on the substrate is located within the orthographic projection of the second opening on the substrate. The minimum distance between the hole wall of the second through hole and the opening wall of the second opening in the direction parallel to the substrate is set as the second distance, and the first distance is set to be less than the second distance.

2. The display panel according to claim 1, wherein, The ratio of the second distance to the first distance is set to K1, where 1 < K1 < 1.

9.

3. The display panel according to claim 1, wherein, The first distance is set to L1, the second distance is set to L2, and 1μm≤(L2-L1)≤4μm.

4. The display panel according to claim 3, wherein, 5.5μm≤L1<7.5μm.

5. The display panel according to claim 1, wherein, The black matrix has a third opening for arranging a third filter, which is configured to filter light into a third color. The mesh structure includes a third through-hole through which the third color light passes; The third through hole and the third opening are arranged in a one-to-one correspondence. The orthographic projection of the third through hole on the substrate is located within the orthographic projection of the third opening on the substrate. The minimum distance between the hole wall of the third through hole and the opening wall of the third opening in the direction parallel to the substrate is set as the third distance, and the first distance is set to be less than the third distance.

6. The display panel according to claim 1, wherein, The opening area of ​​the first opening is greater than the opening area of ​​the second opening.

7. The display panel according to claim 1, wherein, The first color light is set to green light, and the second color light is set to red light or blue light.

8. The display panel according to claim 1, wherein, The first touch conductive layer includes a plurality of first traces, which are arranged to cross each other on a plane parallel to the substrate and form the mesh structure to form the first through hole and the second through hole. The width of the first trace is set to D, where D > 3 μm.

9. The display panel according to claim 8, wherein, D = 3.5 μm.

10. The display panel according to claim 1, wherein, It also includes a light-emitting structure layer, which is located between the substrate and the color filter structure layer; The light-emitting structure layer includes a pixel definition layer with multiple pixel openings. The opening wall of each pixel opening includes a first inclined surface, and the orthographic projection of the first inclined surface on the substrate does not overlap with the orthographic projection of the black matrix on the substrate.

11. The display panel according to claim 10, wherein, The angle between the first inclined plane and the first plane is set as a first included angle, which is greater than or equal to 32.5°, and the first plane is parallel to the base.

12. The display panel according to claim 10, wherein, The end of the first inclined surface closer to the base is the first end point, and the end of the first inclined surface farther from the base is the second end point. The minimum distance between the first end point and the second end point in the direction parallel to the base is set as the fourth distance. The minimum distance between two adjacent pixel openings in the direction parallel to the base is set as the fifth distance, and the ratio of the fifth distance to the fourth distance is set as K2, where K2 > 1.

5.

13. The display panel according to claim 10, wherein, The roughness of the first inclined surface is set to Ra, where 3nm < Ra < 5nm.

14. A method for manufacturing a display panel, wherein, include: A light-emitting structure layer, a color filter structure layer, and a touch structure layer are formed on a substrate. The color filter structure layer is located on the substrate and includes a black matrix with multiple matrix openings. These openings include a first opening for arranging a first filter and a second opening for arranging a second filter. The first filter is configured to filter light into a first color, and the second filter is configured to filter light into a second color. The touch structure layer is located on the side of the color filter structure layer away from the substrate. The touch structure layer includes a first touch conductive layer, which is configured as a mesh structure. The mesh structure has a first channel for transmitting the first color light. The first through hole and the second opening are arranged in a one-to-one correspondence, the orthographic projection of the first through hole on the substrate is located within the orthographic projection of the first opening on the substrate, and the minimum distance between the hole wall of the first through hole and the opening wall of the first opening in the direction parallel to the substrate is set as a first distance; the second through hole and the second opening are arranged in a one-to-one correspondence, the orthographic projection of the second through hole on the substrate is located within the orthographic projection of the second opening on the substrate, and the minimum distance between the hole wall of the second through hole and the opening wall of the second opening in the direction parallel to the substrate is set as a second distance, and the first distance is set to be less than the second distance.

15. The method for manufacturing a display panel according to claim 14, wherein, A light-emitting structure layer, a color filter structure layer, and a touch structure layer are formed on the substrate, including: A pixel definition film is deposited on the substrate, and the pixel definition film is patterned to form a first pattern, the first pattern including a pixel definition layer with multiple pixel openings; The pixel definition layer is irradiated by the curing instrument for a preset time, and the preset time is set to be greater than 10 seconds.

16. The method for manufacturing a display panel according to claim 14, wherein, A light-emitting structure layer, a color filter structure layer, and a touch structure layer are formed on the substrate, including: A pixel definition film is deposited on the substrate, and the pixel definition film is patterned to form a first pattern, the first pattern including a pixel definition layer with multiple pixel openings; The curing instrument irradiates the pixel definition layer with a preset illuminance of 35 mW / cm² to cure the pixel definition layer. 2 Up to 50mW / cm 2 .

17. A display device, wherein, Includes the display panel as described in any one of claims 1 to 13.

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