Display panel, preparation method thereof and display device

Abstract

A display panel, a preparation method thereof and a display device. The display panel comprises a substrate, a color film structure layer and a touch structure layer. The color film structure layer comprises a black matrix provided with a plurality of matrix openings, the plurality of matrix openings comprising a first opening for arranging a first filter and a second opening for arranging a second filter. The touch structure layer comprises a first touch conductive layer arranged in a mesh structure, the mesh structure being provided with a first through hole for transmitting first color light and a second through hole for transmitting second color light. 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 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 smaller than the second distance.

Description

Technical Field

[0001] This article relates to display technology, in particular to a display panel and its preparation method, and a display device. Background Art

[0002] Organic light-emitting diodes (OLEDs) and quantum-dot light-emitting diodes (QLEDs) are active light-emitting display devices with the advantages of self-luminescence, wide viewing angle, high contrast, low power consumption, extremely high response speed, light weight, flexibility and low cost. Summary of the Invention

[0003] An embodiment of the present application provides a display panel, comprising:

[0004] substrate;

[0005] a color filter structure layer located on the substrate, the color filter structure layer including a black matrix, the black matrix having a plurality of matrix openings, the plurality of matrix openings including a first opening for arranging a first filter and a second opening for arranging a second filter, the first filter being configured to filter light into a first color light, and the second filter being configured to filter light into a second color light;

[0006] a touch structure layer located on a side of the color filter structure layer away from the substrate, the touch structure layer comprising a first touch conductive layer, the first touch conductive layer being configured as a mesh structure, the mesh structure being provided with a first through hole for transmitting the first color light, and a second through hole for transmitting the second color light;

[0007] The first through holes and the first openings are arranged in a one-to-one correspondence, the orthographic projections of the first through holes on the substrate are located within the orthographic projections of the first openings on the substrate, and the minimum distance between the hole walls of the first through holes and the opening walls of the first openings in a direction parallel to the substrate is set to a first distance;

[0008] The second through holes and the second openings are arranged in a one-to-one correspondence, the orthographic projection of the second through holes on the substrate is located within the orthographic projection of the second opening on the substrate, the minimum spacing between the hole wall of the second through hole and the mouth wall of the second opening in a direction parallel to the substrate is set to a second distance, and the first distance is set to be smaller than the second distance.

[0009] In some exemplary embodiments, a ratio of the second distance to the first distance is set to K1, where 1<K1<1.9.

[0010] In some example embodiments, the first distance is set as L1, the second distance is set as L2, and 1 μm≤(L2-L1)≤4 μm.

[0011] In some example embodiments, 5.5 μm≤L1<7.5 μm.

[0012] In some example 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.

[0013] The mesh structure includes a third through hole that transmits the third color light.

[0014] The third through hole and the third opening are arranged in one-to-one correspondence, a normal projection of the third through hole on the substrate is located within a normal projection of the third opening on the substrate, a minimum distance between a hole wall of the third through hole and a mouth wall of the third opening in a direction parallel to the substrate is set as a third distance, and the first distance is set to be less than the third distance.

[0015] In some example embodiments, an opening area of the first opening is greater than an opening area of the second opening.

[0016] In some example embodiments, the first color light is set as green light, and the second color light is set as red light or blue light.

[0017] In some example embodiments, the first touch conductive layer includes a plurality of first traces, the plurality of first traces are arranged in cross arrangement in a plane parallel to the substrate and constitute the mesh structure, so as to form the first through hole and the second through hole, and a width of the first trace is set as D, D>3 μm.

[0018] In some example embodiments, D=3.5 μm.

[0019] In some example embodiments, the display panel further includes a light emitting structure layer, the light emitting structure layer being located between the substrate and the color film structure layer.

[0020] The light emitting structure layer includes a pixel definition layer having a plurality of pixel openings, a mouth wall of the pixel opening includes a first inclined surface arranged in an inclined manner, and a normal projection of the first inclined surface on the substrate does not overlap with a normal projection of the black matrix on the substrate.

[0021] In some example embodiments, an included angle between the first inclined surface and a first plane is set as a first included angle, the first included angle is set to be greater than or equal to 32.5°, and the first plane is parallel to the substrate.

[0022] In some exemplary embodiments, an end of the first inclined surface close to the substrate is a first end, an end of the first inclined surface away from the substrate is a second end, and a minimum distance between the first end and the second end in a direction parallel to the substrate is set to a fourth distance;

[0023] The minimum distance between two adjacent pixel openings in a direction parallel to the substrate is set to a fifth distance, and a ratio of the fifth distance to the fourth distance is set to K2, where K2>1.5.

[0024] In some exemplary embodiments, the roughness of the first inclined surface is set to Ra, 3nm<Ra<5nm.

[0025] The present invention provides a method for manufacturing a display panel, including:

[0026] A light-emitting structure layer, a color filter structure layer and a touch structure layer are formed on a substrate, wherein the color filter structure layer is located on the substrate, the color filter structure layer includes a black matrix, the black matrix is ​​provided with 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; the touch structure layer is located on a 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 provided with a mesh structure, and the mesh structure is provided with a first pass that transmits the first color light a hole, 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, and the minimum spacing between the hole wall of the first through hole and the mouth wall of the first opening in a direction parallel to the substrate is set to 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 spacing between the hole wall of the second through hole and the mouth wall of the second opening in a direction parallel to the substrate is set to a second distance, and the first distance is set to be smaller than the second distance.

[0027] In some exemplary embodiments, forming a light emitting structure layer, a color filter structure layer, and a touch structure layer on a substrate includes:

[0028] Depositing a pixel definition film on the substrate and performing a patterning process on the pixel definition film to form a first pattern, wherein the first pattern includes a pixel definition layer having a plurality of pixel openings;

[0029] The curing instrument irradiates the pixel definition layer for a preset time to cure the pixel definition layer, and the preset time is set to be greater than 10 seconds.

[0030] In some exemplary embodiments, forming a light emitting structure layer, a color filter structure layer, and a touch structure layer on a substrate includes:

[0031] Depositing a pixel definition film on the substrate and performing a patterning process on the pixel definition film to form a first pattern, wherein the first pattern includes a pixel definition layer having a plurality of pixel openings;

[0032] The curing instrument irradiates the pixel definition layer with a preset illumination to cure the pixel definition layer. The preset illumination is set to 35 mW / cm 2 Up to 50 mW / cm 2 .

[0033] An embodiment of the present application provides a display device, including the above-mentioned display panel.

[0034] The display panel of the embodiment of the present application can reduce the first through hole on the first touch conductive layer so that less ambient light is directed to the light-emitting structure layer, which can effectively improve the color separation problem in the dark state. The display panel of the embodiment of the present application can form the first touch conductive layer on the basis of the original mask by improving the exposure amount and mask offset of the patterning process, thereby avoiding the mask revision and saving costs. The display panel of the embodiment of the present application can improve the color separation problem in the dark state by thickening the routing of the first touch conductive layer so that less ambient light is directed to the light-emitting structure layer. The display panel of the embodiment of the present application can improve the color separation problem in the dark state by adjusting the inclination angle and roughness of the wall of the pixel opening to trap the ambient light entering the display panel within the screen. This proposal is in line with the actual application of the product, has simple process operation, high mass production feasibility, and high practical application value.

[0035] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. Other advantages of the present application can be realized and obtained by the solutions described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0037] Figure 1 is a structural schematic diagram of a display device;

[0038] Figure 2Schematic diagram of a planar structure of a display panel;

[0039] Figure 3 is a schematic diagram of a cross-sectional structure of a display device;

[0040] Figure 4 is a schematic plan view of a display panel according to the exemplary embodiment;

[0041] Figure 5 for Figure 4 Schematic cross-sectional view of the aa direction;

[0042] Figure 6 for Figure 4 Schematic cross-sectional view of the bb direction;

[0043] Figure 7 This is a schematic diagram of ambient light of a display panel according to this exemplary embodiment;

[0044] Figure 8 for Figure 4 Schematic diagram of the cc-direction cross section;

[0045] Figure 9 for Figure 5 A local enlarged schematic diagram of point A in FIG;

[0046] Figure 10 for Figure 9 Schematic diagram of the first slope in . DETAILED DESCRIPTION

[0047] This application describes multiple embodiments, but this description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in this application. Although many possible feature combinations 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 any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0048] The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features, and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive solution. Any features or elements of any embodiment may 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 may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the appended claims and their equivalents, the embodiments are not subject to other limitations. In addition, various modifications and changes may be made within the scope of protection of the appended claims.

[0049] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of the steps described herein, the method or process should not be limited to the steps in the specific order described. As will be understood by those skilled in the art, other orders of steps are also possible. Therefore, the specific order of the steps set forth in the specification should not be interpreted as a limitation to the claims. In addition, the claims for the method and / or process should not be limited to performing their steps in the order written, and those skilled in the art can readily understand that these orders can be changed and still remain within the spirit and scope of the embodiments of the present application.

[0050] This exemplary embodiment provides a display panel, including:

[0051] substrate;

[0052] a color filter structure layer located on the substrate, the color filter structure layer including a black matrix, the black matrix having a plurality of matrix openings, the plurality of matrix openings including a first opening for arranging a first filter and a second opening for arranging a second filter, the first filter being configured to filter light into a first color light, and the second filter being configured to filter light into a second color light;

[0053] a touch structure layer located on a side of the color filter structure layer away from the substrate, the touch structure layer comprising a first touch conductive layer, the first touch conductive layer being configured as a mesh structure, the mesh structure being provided with a first through hole for transmitting the first color light, and a second through hole for transmitting the second color light;

[0054] The first through holes and the first openings are arranged in a one-to-one correspondence, the orthographic projections of the first through holes on the substrate are located within the orthographic projections of the first openings on the substrate, and the minimum distance between the hole walls of the first through holes and the opening walls of the first openings in a direction parallel to the substrate is set to a first distance;

[0055] The second through holes and the second openings are arranged in a one-to-one correspondence, the orthographic projection of the second through holes on the substrate is located within the orthographic projection of the second opening on the substrate, the minimum spacing between the hole wall of the second through hole and the mouth wall of the second opening in a direction parallel to the substrate is set to a second distance, and the first distance is set to be smaller than the second distance.

[0056] In some exemplary embodiments, a ratio of the second distance to the first distance is set to K1, where 1<K1<1.9.

[0057] In some exemplary embodiments, the first distance is set to L1, the second distance is set to L2, and 1 μm≤(L2-L1)≤4 μm.

[0058] In some exemplary embodiments, 5.5 μm≦L1<7.5 μm.

[0059] In some exemplary embodiments, the first touch conductive layer includes a plurality of first traces, which are arranged to be cross-arranged on a plane parallel to the substrate and constitute the mesh structure to form the first through hole and the second through hole, and the width of the first trace is set to D, D>3μm.

[0060] In some exemplary embodiments, a light emitting structure layer is further included, wherein the light emitting structure layer is located between the substrate and the color filter structure layer;

[0061] The light emitting structure layer includes a pixel definition layer having a plurality of pixel openings. The opening wall of the pixel opening includes an inclined first slope. The orthographic projection of the first slope on the substrate does not overlap with the orthographic projection of the black matrix on the substrate.

[0062] In some exemplary embodiments, an included angle between the first inclined surface and the first plane is set to a first included angle, and the first included angle is set to be greater than or equal to 32.5°.

[0063] In some exemplary embodiments, the roughness of the first inclined surface is set to Ra, 3nm<Ra<5nm.

[0064] Figure 1 FIG. 1 is a schematic diagram of the structure of a display device. Figure 1As shown, a 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, scan driver, and light-emitting driver, respectively. The data driver is connected to a plurality of data signal lines (D1 to Dn), the scan driver is connected to a plurality of scan signal lines (S1 to Sm), and the light-emitting driver is connected to a plurality of light-emitting signal lines (E1 to Eo). The pixel array may include a plurality of sub-pixels ij, where i and j may 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 suitable for the specifications of the data driver to the data driver, may provide clock signals, scan start signals, etc. suitable for the specifications of the scan driver to the scan driver, and may provide clock signals, emission stop signals, etc. suitable for the specifications of the light-emitting driver to the light-emitting driver. The data driver can generate data voltages to be supplied to data signal lines D1, D2, D3, ..., and Dn using grayscale values ​​and control signals received from a timing controller. 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 per-row basis, where n can be a natural number. The scan driver can generate scan signals to be supplied to scan signal lines S1, S2, S3, ..., and Sm by receiving clock signals, scan start signals, and the like from the timing controller. For example, the scan driver can sequentially supply scan signals having on-level pulses to scan signal lines S1 to Sm. For example, the scan driver can be configured as a shift register and can sequentially transmit 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. The light driver can generate emission signals to be supplied to light signal lines E1, E2, E3, ..., and Eo by receiving clock signals, emission stop signals, and the like from the timing controller. For example, the light emitting driver may sequentially provide emission signals having off-level pulses to the light emitting signal lines E1 to Eo. For example, the light emitting driver may be configured as a shift register and may generate emission signals by sequentially transmitting emission stop signals provided in the form of off-level pulses to the next stage circuit under the control of a clock signal. o may be a natural number. In some exemplary embodiments, a pixel array may be provided on a display panel.

[0065] Figure 2 FIG. 1 is a schematic diagram of a planar structure of a display panel. Figure 2As shown, the display panel may include a plurality of 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 respectively connected to a scan signal line, a light-emitting signal line, and a data signal line. The pixel circuit is configured to receive a 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 respectively connected to the pixel circuit of the sub-pixel. The light-emitting device is configured to emit light of corresponding brightness in response to the current output by the pixel circuit of the sub-pixel.

[0066] In some exemplary embodiments, the first subpixel P1 may be a red subpixel (R) that emits red light, the second subpixel P2 may be a blue subpixel (B) that emits blue light, and the third subpixel P3 may be a green subpixel (G) that emits green light. In some exemplary embodiments, the subpixels may be rectangular, diamond, pentagonal, or hexagonal, and the three subpixels may be arranged horizontally, vertically, or in a triangular pattern, although this is not limited herein. In some exemplary embodiments, the first subpixel P1, the second subpixel P2, and the third subpixel P3 may be arranged along a straight line, but this is not limited to this. For example, the first subpixel P1, the second subpixel P2, and the third subpixel P3 may be arranged in a non-linear pattern, such as a triangular pattern. In some exemplary embodiments, the pixel unit P may include four subpixels, which may be arranged horizontally, vertically, or in a square pattern, although this is not limited herein.

[0067] Figure 3 This is a schematic diagram of the cross-sectional structure of a display device, illustrating a structure that uses white light combined with color film to achieve full color. Figure 3 As shown, 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 in this disclosure.

[0068] In some exemplary embodiments, substrate 100 may be a polyimide (PI) substrate, but is not limited thereto. For example, it may be a glass substrate. Circuit structure layer 200 may be fabricated on substrate 100 using a silicon semiconductor process (e.g., a CMOS process). Circuit structure layer 200 may include multiple circuit units, each of which may include at least a pixel circuit, each of which is connected to a scan signal line and a data signal line. The pixel circuit may include multiple transistors and storage capacitors. The transistor 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 (e.g., traces) via the connection electrodes.

[0069] In some exemplary embodiments, the light-emitting structure layer 300 may include multiple light-emitting devices, each of which may include at least an anode, an organic light-emitting layer, and a cathode. The anode may be connected to the second electrode of the transistor via a connecting electrode, the organic light-emitting layer may be connected to the anode, the cathode may be connected to the organic light-emitting layer, and the cathode may be connected to the second power line. The organic light-emitting layer emits light when driven by the anode and cathode. In some exemplary embodiments, the organic light-emitting layer may include an 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).

[0070] In some exemplary embodiments, the first encapsulation layer 400 may utilize Thin Film Encapsulation (TFE) to prevent external moisture from entering the light-emitting structure layer. The first encapsulation layer 400 may utilize a three-layer structure (inorganic / organic / inorganic) to prevent external moisture from entering the light-emitting element. However, this embodiment is not limited to this. For example, the encapsulation structure layer may utilize a five-layer structure (inorganic / organic / inorganic / organic / inorganic).

[0071] In some exemplary embodiments, the color filter structure layer 500 may include a black matrix (BM) and color filters (CF). The color filters are positioned in the red, green, and blue sub-pixels, filtering the white light emitted by the light-emitting device into red (R), green (G), and blue (B) light. The black matrix may be located between adjacent color filters. This example utilizes color filter integration (COE) technology to form the color filters, significantly reducing their thickness compared to polarizers and achieving greater flexibility. Furthermore, unlike circular polarizers, which eliminate natural light, the black matrix and filter elements of the color filter structure layer 500 both absorb light. When exposed to natural light, the natural light passes through the filter elements and illuminates the sub-pixels below. After being reflected by the sub-pixels, the natural light is emitted from the filter elements together with the light generated by the sub-pixels themselves. This improves the light extraction efficiency of the natural light, thereby 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 .

[0072] Color separation in the dark state refers to the phenomenon of color unevenness or color shift in the dark state of a display device (i.e., when displaying black or low-brightness images). This phenomenon is often related to display technology, optical design, or material properties, and is particularly common in OLED or LCD displays. The applicant has discovered that products using COE technology can exhibit a phenomenon of color separation when the screen is off and in ambient light. This phenomenon is caused by a combination of anode unevenness, which causes the reflection direction of different colors of light to separate, and diffraction caused by the openings in the pixel definition layer and black matrix. Currently, methods for improving color separation in the dark state of COE products focus on three main approaches, but none of these approaches are ideal. For example, the first improvement method, specifically improving anode flatness by thickening the flattening layer, can slightly improve color separation, but the ultimate effect is unsatisfactory. 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 it also degrades lifespan, power consumption, and reliability. For example, the third improvement method involves adopting a circular pixel design, which requires the entire mask to be redesigned, significantly increasing costs, and there is no reference data for optical characteristics, display quality, and reliability.

[0073] The technical solutions of the embodiments of the present invention are described in detail below through specific examples.

[0074] Figure 4is a schematic plan view of a display panel of this exemplary embodiment, Figure 5 for Figure 4 The cross-sectional diagram in the aa direction is shown in FIG. Figure 6 for Figure 4 The cross-sectional diagram of the bb direction in FIG. 1 is a schematic diagram of a display panel, such as Figures 4 to 6 As shown, 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 can be located on the substrate 100, and the touch structure layer 600 can 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, which is provided with a plurality of matrix openings 502. The plurality of matrix openings 502 may include a first opening 502-1 for arranging a first color filter 503-1 and a second opening 502-2 for arranging a second color filter 503-2. The first color 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 provided with a mesh structure. The mesh structure has a first through hole 604-1 that transmits the first color light, and a second through hole 604-2 that transmits the second color light. The first through-hole 604-1 and the first opening 502-1 may be arranged in a one-to-one correspondence, the orthographic projection of the first through-hole 604-1 on the substrate 100 may be located within the orthographic projection of the first opening 502-1 on the substrate 100, and the minimum spacing between the hole wall of the first through-hole 604-1 and the mouth wall of the first opening 502-1 in a direction parallel to the substrate 100 is set to a first distance (L1). The second through-hole 604-2 and the second opening 502-2 may be arranged in a one-to-one correspondence, the orthographic projection of the second through-hole 604-2 on the substrate 100 may be located within the orthographic projection of the second opening 502-2 on the substrate 100, and the minimum spacing between the hole wall of the second through-hole 604-2 and the mouth wall of the second opening 502-2 in a direction parallel to the substrate 100 is set to a second distance (L2), and the first distance (L1) is set to be smaller than the second distance (L2). Thus, the display panel of this embodiment can effectively improve color separation in the dark state by shrinking the first through-hole 604-1 in the first touch-sensitive conductive layer, allowing less ambient light to reach the light-emitting structure layer. Furthermore, the display panel of this embodiment can form the first touch-sensitive conductive layer on the basis of the existing reticle by improving the exposure and mask offset during the patterning process, thus avoiding reticle revisions and saving costs.

[0075] In some exemplary embodiments, Figures 4 to 6As shown, the display panel also includes a light-emitting structure layer 300, which can be located between the substrate 100 and the color filter structure layer 500. The light-emitting structure layer 300 can include: a pixel definition layer 301 and multiple light-emitting elements. For example, each light-emitting element can 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 can be an anode, and the first electrode 303 can be disposed on the substrate 100. The pixel definition layer 301 is disposed on the first electrode 303 and the substrate 100. The pixel definition layer 301 can be provided with multiple pixel openings 302, and each pixel opening 302 can expose at least a portion of the surface of a corresponding first electrode 303. The organic light-emitting layer 304 can be disposed within a pixel opening 302 and connected to the corresponding first electrode 303. The second electrode 305 can be disposed on the organic light-emitting layer 304 and connected to the organic light-emitting layer 304. An isolation column layer (not shown) may be further provided on the side of the pixel definition layer 301 away from the substrate 100 and the side of the organic light emitting layer 304 close to the substrate 100 . The isolation column layer may include a plurality of isolation columns (PS).

[0076] In some exemplary embodiments, Figures 4 to 6 As shown, the organic light-emitting layer 304 can emit light of corresponding colors when driven by 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), as well as one or more film layers including a hole injection layer (HIL), a hole transport layer (HTL), a hole blocking layer (HBL), an electron blocking layer (EBL), an electron injection layer (EIL), and an electron transport layer (ETL). Driven by the voltage of the first electrode 303 and the second electrode 305, the light-emitting properties of the organic material can be utilized to emit light according to the required grayscale.

[0077] In some exemplary embodiments, Figures 4 to 6As shown, a pixel unit may include four sub-pixels 306. The shape of the sub-pixels may be rectangular, diamond, 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 the present invention 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, vertically, or in a square. In this example, the four sub-pixels 306 may be arranged in a square. 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; 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.

[0078] In some exemplary embodiments, Figures 4 to 6As shown, a first encapsulation layer 400 may be provided 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 not transparent to light, while the material of the color filter 503 is transparent to light and can filter light. The color filter 503 can be divided into a first filter 503-1, a second filter 503-2, and a third filter 503-3 according to the color of the light filtered. The color filters 503 correspond one-to-one with the light-emitting devices. For example, the first filter 503-1 can be arranged corresponding to the first light-emitting device, the second filter 503-2 can be arranged corresponding to the second light-emitting device, and the third filter 503-3 can be arranged corresponding to the third light-emitting device. The 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 is formed by digging 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 the pixel openings 302 are arranged in a one-to-one correspondence. That is, in a direction perpendicular to the substrate 100 (i.e., the third direction), the matrix openings 502 and the 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 openings 502 may extend through the black matrix 501 in the third direction. The matrix openings 502 include a first opening 502-1, a second opening 502-2, and a third opening 502-3. The first filter 503-1 may be disposed within the first opening 502-1, the second filter 503-2 may be disposed within the second opening 502-2, and the third filter 503-3 may be disposed within the third opening 502-3. The first filter 503-1 may filter light emitted by the first light-emitting device into light of a first color, the second filter 503-2 may filter light emitted by the second light-emitting device into light of a second color, and the third filter 503-3 may filter light emitted by the third light-emitting device into light of a third color. The first color light may be green, the second color light may be red, and the third color light may be blue, but is not limited thereto. For example, the first color light may be green, the second color light may be blue, and the third color light may be red; for another example, the first color light may be red, the second color light may be green, and the third color light may be blue.

[0079] In some exemplary embodiments, Figures 4 to 6As shown, the opening area of ​​the second opening 502-2 can be equal to the opening area of ​​the third opening 502-3, and the opening area of ​​the first opening 502-1 can be larger than the opening area of ​​the second opening 502-2, so that more ambient light can be emitted from the first opening 502-1 to the light-emitting structure layer 300. However, the present invention is not limited thereto. For example, the opening area of ​​the first opening 502-1, the opening area of ​​the second opening 502-2, and the opening area of ​​the third opening 502-3 can all be the same.

[0080] In some exemplary embodiments, Figures 4 to 6 As shown, 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. The touch buffer layer 601, the first touch conductive layer 602, and the touch encapsulation layer 603 are 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 of Ti / Al / Ti or Ti / Al / Ti / Al / Ti. The first touch conductive layer 602 may be a mesh structure extending in a plane parallel to the substrate 100. The mesh structure includes a first through hole 604-1, a second through hole 604-2, and a third through hole 604-3. The first through hole 604-1, the second through hole 604-2, and the third through hole 604-3 extend through the first touch conductive layer 602 in the third direction. The first through hole 604-1 may 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 may correspond in a one-to-one manner in the third direction, and the orthographic projection of the first opening 502-1 on the substrate 100 may be located within the orthographic projection of the first through hole 604-1 on the substrate 100; the second through hole 604-2 may 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 may correspond in a one-to-one manner in the third direction, and the orthographic projection of the second opening 502-2 on the substrate 100 may be located within the orthographic projection of the second through hole 604-2 on the substrate 100; the third through hole 604-3 may 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 may correspond in a one-to-one manner in the third direction, and the orthographic projection of the third opening 502-3 on the substrate 100 may be located within the orthographic projection of the third through hole 604-3 on the substrate 100.

[0081] In some exemplary embodiments, Figures 4 to 6As shown, 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 can be the first side wall 504-1, the wall of the second opening 502-2 can be the second side wall 504-2, and the wall of the third opening 502-3 can be the third side wall 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 can be the first hole wall 605-1, the wall of the second through hole 604-2 can be the second hole wall 605-2, and the wall of the third through hole 604-3 can be the third hole wall 605-3. The first sidewall 504-1 and the first hole wall 605-1 are spaced uniformly in the circumferential direction of the first opening 502-1, and the spacing between the first sidewall 504-1 and the first hole wall 605-1 in a direction parallel to the substrate 100 is L1. The second sidewall 504-2 and the second hole wall 605-2 are spaced uniformly in the circumferential direction of the second opening 502-2, and the spacing between the second sidewall 504-2 and the second hole wall 605-2 in a direction parallel to the substrate 100 is L2. The third sidewall 504-3 and the third hole wall 605-3 are spaced uniformly in the circumferential direction of the third opening 502-3, and the spacing between the third sidewall 504-3 and the third hole wall 605-3 in a direction parallel to the substrate 100 is L3. In some exemplary embodiments, L2=L3>L1, but is not limited thereto. For example, L2≠L3, L3>L1, or 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) may be 5.5 μm to 7.5 μm, where 5.5 μm ≤ L1 < 7.5 μm.

[0082] Figure 7 is a schematic diagram of ambient light of a display panel of this exemplary embodiment. In some exemplary embodiments, as Figure 7 As shown, because the opening area of ​​the first opening 502-1 is larger than the opening areas of the other matrix openings 502, more ambient light can be emitted from the first opening 502-1 to the light-emitting structure layer 300. In this example, the first through hole 504-1 is retracted, so that the hole wall of the first through hole 504-1 is close to the first opening 502-1. As shown by the dotted arrows, some ambient light can be irradiated onto the first touch conductive layer 602 and reflected to the outside world, which can reduce the ambient light emitted to the light-emitting structure layer 300, thereby effectively alleviating the color separation phenomenon.

[0083] In some exemplary embodiments, Figures 4 to 6As shown, the value of the first distance (L1) can be 6 μm, and the second distance (L2) and the third distance (L3) can be 9 μm. However, the present invention is not limited thereto. For example, the value of the first distance (L1) can be 6.5 μm, and the second distance (L2) and the third distance (L3) can be 8.5 μm; for another example, the value of the first distance (L1) can be 7.0 μm, and the second distance (L2) and the third distance (L3) can be 8.0 μm; for another example, the value of the first distance (L1) can be 5.5 μm, and the second distance (L2) and the third distance (L3) can be 9.5 μm. The applicant conducted experiments and collected data on lifespan, power consumption, reliability, and visual color separation. Option 1 can be 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 distance (L2) and third distance (L3) can be 9μm. There was no significant degradation in lifespan, power consumption, or reliability between Option 1 and Option 2. The visual color separation effect for Option 1 was LV2, while that for Option 2 was LV0. The degree of color separation is typically expressed as 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. It can be seen that Option 2 has a lower degree of color separation. Therefore, the display panel of this example has significantly improved color separation without compromising lifespan, power consumption, or reliability.

[0084] Figure 8 for Figure 4 In the cc-direction cross-sectional diagram, in some exemplary embodiments, as Figure 4 、 Figure 5 、 Figure 6 and Figure 8As shown, the first touch conductive layer 602 may include a plurality of first traces 606. The plurality of first traces 606 may be arranged in a cross-sectional plane parallel to the substrate 100 to form 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, i.e., 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 perpendicular to the extension direction of the first trace 606 and parallel to the substrate 100. For example, in a cc cross-section, the first trace 606 may extend along the second direction. The width of the first trace 606 may be the dimension of the first trace 606 in the first direction. Both the first and second directions are parallel to the substrate 100, with the first direction being perpendicular to the second direction. In some exemplary embodiments, the width of the first trace 606 may be 3.5 μm, i.e., D = 3.5 μm. This width is larger than the current trace width (3 μm), allowing the wall of the first through-hole 604-1 formed by the first trace 606 to be closer to the first opening 504-1. As indicated by the dashed arrows, some ambient light may impinge on the first touch conductive layer 602 and be reflected to the outside world, thereby reducing the amount of ambient light emitted to the light-emitting structure layer, thereby effectively alleviating color separation. However, the present invention is not limited to this. For example, the width of the first trace 606 may be 3.2 μm, i.e., D = 3.2 μm; another example, the width of the first trace 606 may be 4 μm, i.e., D = 4 μm; and another example, the width of the first trace 606 may be 3.7 μm, i.e., D = 3.7 μm.

[0085] Figure 9 for Figure 5 In the partially enlarged schematic diagram of A in FIG, in some exemplary embodiments, as Figure 5 and Figure 9 As shown, the mouth wall of the pixel opening 302 includes a first inclined surface 302-1 that is tilted, and the orthographic projection of the first inclined surface 302-1 on the substrate 100 does not overlap with the orthographic projection of the black matrix 501 on the substrate 100. The opening area of ​​the pixel opening 302 increases linearly in the direction away from the substrate 100. The pixel opening 302 may be a speaker hole, and the cross-section of the pixel opening 302 in the plane perpendicular to the substrate 100 may be an inverted trapezoid. The angle between the first inclined surface 302-1 and the first plane (not shown in the figure) is set to a first angle, and the first angle may be α. The first angle is set to be greater than or equal to 32.5°, that is, α≥32.5°, and the first plane (not shown in the figure) is parallel to the substrate 100. In this example, the first angle may be 32.5°, that is, α=32.5°, so that Figure 9The ambient light irradiated on the first inclined surface 302-1 can be reflected between the black matrix 501 and the second electrode 305, and the ambient light entering the display panel can be trapped in the screen, which can improve the color separation problem of the display panel in the dark state. However, the present application is not limited to this. For example, α = 36.8°, or α = 45.2°, or α = 49.5°.

[0086] In some example embodiments, as shown in Figure 5 and Figure 9 The applicant tests the display panel of the present example and the current display panel, wherein the first scheme can be the current display panel, in the first scheme, α = 28.6°, and the color separation degree of the first scheme can be color separation LV3. The display panel of the second scheme, α = 32.5°, and the color separation degree of the second scheme can be color separation LV1; the display panel of the third scheme, α = 36.8°, and the color separation degree of the third scheme can be color separation LV1; the display panel of the fourth scheme, α = 45.2°, and the color separation degree of the fourth scheme can be color separation LV0.5; the display panel of the fifth scheme, α = 49.5°, and the color separation degree of the fifth scheme can be color separation LV0.5. The degree of color separation is usually represented by color separation LV (Level), and the smaller the color separation LV value, the lower the color separation degree, and the better the display effect. Color separation LV3, color separation LV1, and color separation LV0.5 are all quantitative indicators of color separation degree. It can be seen that the color separation of the second scheme to the fifth scheme is obviously optimized compared with the first scheme, and the display panel of the present example, and the color separation degree is obviously optimized, and the service life, power consumption, and reliability are not affected.

[0087] In some example embodiments, as shown in Figure 5 and Figure 9 The first end portion 302-2 of the first inclined surface 302-1 is close to one end of the substrate 100, and the second end portion 302-3 of the first inclined surface 302-1 is away from one end of the substrate 100. The minimum distance between the first end portion 302-2 and the second end portion 302-3 in the direction parallel to the substrate 100 is set as a fourth distance, i.e. L4, and in the present example, the distance between the first end portion 302-2 and the second end portion 302-3 in the first direction can be L4. The minimum distance between the two adjacent pixel openings 302 in the direction parallel to the substrate 100 is set as a fifth distance, i.e. L5, and in the present example, the distance between the two adjacent pixel openings 302 in the first direction can be L5.

[0088] In some example embodiments, as shown in Figure 5 and Figure 9As shown, the ratio of the fifth distance to the fourth distance is set to K2, that is, K2 = (L5 / L4), where K2 > 1.5. In this example, L5 = 6 μm and L4 = 3.5 μm, but the present invention is not limited thereto. For example, L5 = 6 μm and L4 = 3 μm; another example, L5 = 6 μm and L4 = 2.5 μm; and another example, L5 = 6 μm and L4 = 3.2 μm.

[0089] In some exemplary embodiments, Figure 5 and Figure 9 As shown, the first angle (α) is adjusted by controlling the curing process of the pixel definition layer 301. The first angle (α) can be positively correlated with the UV light exposure time. The curing device can emit UV light, and the UV light exposure can cure the pixel definition layer 301. When the UV light exposure time is 0 seconds, the first angle (α) can generally reach 28.6°. At this time, the first angle (α) is relatively small. In the off state, most ambient light can pass through the screen and be reflected outside the screen, resulting in color separation. If the UV light exposure time is increased to 10 seconds, the first angle (α) will increase to 32.5°. If the UV light exposure time is further increased to 20 seconds, 30 seconds, and 40 seconds, the first angle (α) can increase to 36.8°, 45.2°, and 49.5°, respectively.

[0090] Figure 10 for Figure 9 In the first oblique schematic diagram, in some exemplary embodiments, as Figure 10 As shown, the roughness of the first inclined surface 302-1 is set to Ra, 3nm<Ra<5nm, so that the roughness of the first inclined surface 302-1 is relatively large, and when light hits the first inclined surface 302-1, diffuse reflection is emitted. Figure 10 As shown, when the ambient light indicated by the dotted arrow hits the first inclined surface 302 - 1 , diffuse reflection occurs, the reflection capability is weakened, and the reflection direction changes at the same time. The screen film layer absorbs the reflected light, and the degree of color separation is alleviated.

[0091] In some exemplary embodiments, Figure 10As shown, the applicant tested the display panel of this example and a current display panel. Option 1 can be a current display panel. In Option 1, the roughness of the first inclined surface 302-1 can be roughness LV0, while the color separation level of Option 1 can be color separation LV3. In Option 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 of Option 2 can be LV1.5. The degree of color separation is typically expressed as 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 and color separation LV1.5 are both quantitative indicators of the degree of color separation. The degree of roughness is typically expressed as roughness LV (Level). The smaller the roughness LV value, the lower the roughness. Roughness LV0 and roughness LV0.5 are both quantitative indicators of the degree of color separation. Optionally, there are two options: Option 3 and Option 4. In Option 3 and Option 4, the roughness levels are LV1 and LV2, respectively, both greater than the roughness of Option 1. The color separation of Options 2 through 4 is significantly improved due to Option 1. The display panel of this example has significantly improved color separation without compromising lifespan, power consumption, or reliability.

[0092] In some exemplary embodiments, Figure 10 As shown, the curing process of the pixel definition layer 301 is controlled to adjust the curing process. The curing device can emit ultraviolet light, and the ultraviolet light can cure the pixel definition layer 301. The greater the illumination 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 usually used to describe the degree to which the surface of an object is illuminated. When the illumination of the ultraviolet light is 30mW / cm 2 When the roughness of the first inclined surface 302-1 is LV0, the color separation phenomenon is obvious. 2 The roughness of the first inclined surface 302-1 increases to LV0.5, at which point the color separation phenomenon weakens. If the UV light intensity is further increased to 40 mW / cm 2 , 50mW / cm 2 When the first inclined surface 302-1 has a roughness of LV1 and a roughness of LV2, the roughness of the first inclined surface 302-1 may be respectively. In this example, the illumination of the ultraviolet light may be 35 mW / cm 2 The roughness of the first inclined surface 302 - 1 is roughness LV0.5, the start-up grayscale is not significantly deteriorated, and the lifespan, power consumption, and reliability are not significantly deteriorated.

[0093] The following is an illustrative explanation of the preparation process of the display panel. The "patterning process" mentioned in the present disclosure includes processes such as coating photoresist, mask exposure, development, etching, and stripping photoresist for metal materials, inorganic materials or transparent conductive materials, and includes processes such as coating organic materials, mask exposure and development for organic materials. Deposition can be carried out by any one or more of sputtering, evaporation, and chemical vapor deposition, coating can be carried out by any one or more of spraying, spin coating and inkjet printing, and etching can be carried out by any one or more of dry etching and wet etching, which are not limited in the present disclosure. "Thin film" refers to a layer of thin film made by deposition, coating or other processes of a certain material on a substrate 100. If the "thin film" does not require a patterning process during the entire production process, the "thin film" can also be called a "layer". If the "thin film" requires a patterning process during the entire production 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". As used in this disclosure, "A and B are disposed in the same layer" means that A and B are formed simultaneously through the same patterning process, and the "thickness" of the film layer refers to the dimension of the film layer in a direction perpendicular to the display panel. In 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 contains the orthographic projection of B" means that the boundary of the orthographic projection of B falls within the boundary of the orthographic projection of A, or that the boundary of the orthographic projection of A overlaps with the boundary of the orthographic projection of B.

[0094] In an exemplary embodiment, a process of preparing a display panel may include the following steps.

[0095] Step 1: forming a light emitting structure layer 300 on a substrate 100 .

[0096] In some exemplary embodiments, Figure 5 、 Figure 6 、 Figure 8 、 Figure 9 and Figure 10 As shown, forming the light emitting structure layer 300 on the substrate 100 may include: depositing a first conductive film on the substrate 100, patterning the first conductive film through a patterning process to form an anode electrode layer pattern, and the anode electrode layer pattern of each sub-pixel may include at least a first electrode 303.

[0097] In some exemplary embodiments, the first conductive film may be made of 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 material 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.

[0098] 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 through a patterning process to form a first pattern. The first pattern includes a pixel definition layer 301, and the pixel definition layer 301 of each sub-pixel is provided with a pixel opening 302. The pixel definition film in the pixel opening 302 is removed to expose the surface of the first electrode 303.

[0099] Subsequently, the pixel definition layer 301 is cured by irradiating the pixel definition layer 301 with a curing device that can emit ultraviolet rays. The curing device can irradiate the pixel definition layer 301 for a preset time and at a preset illumination.

[0100] In some exemplary embodiments, the first angle (α) is adjusted by controlling the curing process of the pixel definition layer 301. The first angle (α) may be positively correlated with the UV light exposure time. The curing device may emit UV light, and the UV light exposure may cure the pixel definition layer 301. If the preset time is 10 seconds, the first angle (α) will increase to 32.5°. If the preset time is 20 seconds, 30 seconds, and 40 seconds, the first angle (α) may increase to 36.8°, 45.2°, and 49.5°, respectively.

[0101] In some exemplary embodiments, the greater the illumination of the ultraviolet light, the greater the roughness of the first inclined surface 302-1. 2 The roughness of the first inclined surface 302-1 is LV0.5, the grayscale at the start of lighting is not significantly deteriorated, and the lifespan, power consumption, and reliability are not significantly deteriorated. However, this is not limited to the above. For example, the preset illumination can also be 40 mW / cm 2 and 50 mW / cm 2 .

[0102] Subsequently, an organic light-emitting layer 304 is formed on the substrate 100 with the aforementioned pattern formed thereon by evaporation or inkjet printing, and the organic light-emitting layer 304 is connected to the first electrode 303 through the 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).

[0103] Subsequently, a cathode pattern is formed by evaporation using an open mask. 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.

[0104] At this point, the pattern of the light emitting structure layer 300 is completed, and then the first encapsulation structure layer 400 and the color filter structure layer 500 are prepared.

[0105] Step 2: forming a touch structure layer 600 on the color filter structure layer 500 .

[0106] In some exemplary embodiments, Figure 5 、 Figure 6 、 Figure 8 、 Figure 9 and Figure 10 As shown, forming the 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 through a patterning process.

[0107] In some exemplary embodiments, the width (D) of the first trace 606 can be adjusted by the exposure amount in the patterning process of forming the first touch conductive layer 602. The smaller the exposure amount, 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.

[0108] In some exemplary embodiments, a mask shift may be used in the patterning process of forming the first touch conductive layer 602 to shrink the first through hole 604 - 1 and reduce the first distance ( L1 ), so that the first distance ( L1 ) is smaller than the second distance ( L2 ). The first distance ( L1 ) may be 6 μm.

[0109] After the touch structure 600 is completed, the cover layer 700 is formed, and the following is obtained: Figure 5 The display panel shown.

[0110] In some exemplary embodiments, a display device includes the aforementioned display panel. The display device provided by the embodiments of the present disclosure can be applied to electronic devices, such as mobile phones, tablet computers, televisions, monitors, laptop computers, digital photo frames, navigation systems, and in-vehicle displays. It can also be any product or component with a display function, such as a wearable device, such as a smartwatch, smart bracelet, smart glasses, smart headphones, smart clothing, and head-mounted displays.

[0111] The present invention provides a method for manufacturing a display panel, including:

[0112] 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 is provided with 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 a 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 to have a mesh structure. The mesh structure has a first through hole 604 that transmits the first color light. -1, and a second through hole 604-2 that transmits the second color light; 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 spacing between the hole wall of the first through hole 604-1 and the mouth wall of the first opening 502-1 in a direction parallel to the substrate 100 is set to 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, the minimum spacing between the hole wall of the second through hole 604-2 and the mouth wall of the second opening 502-2 in a direction parallel to the substrate 100 is set to a second distance, and the first distance is set to be smaller than the second distance.

[0113] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0114] In addition, the terms "first", "second", and the like, are used merely for descriptive purposes, and do not imply or imply relative importance or a specific number of the technical features indicated. Therefore, the features defined as "first", "second", and the like can explicitly or implicitly include at least one of the features.

[0115] In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0116] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, "connection" can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0117] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicate that the first feature is lower than the second feature in horizontal height.

[0118] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0119] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A display panel, characterized in that: include: substrate; a color filter structure layer located on the substrate, the color filter structure layer including a black matrix, the black matrix having a plurality of matrix openings, the plurality of matrix openings including a first opening for arranging a first filter and a second opening for arranging a second filter, the first filter being configured to filter light into a first color light, and the second filter being configured to filter light into a second color light; a touch structure layer located on a side of the color filter structure layer away from the substrate, the touch structure layer comprising a first touch conductive layer, the first touch conductive layer being configured as a mesh structure, the mesh structure being provided with a first through hole for transmitting the first color light, and a second through hole for transmitting the second color light; The first through holes and the first openings are arranged in a one-to-one correspondence, the orthographic projections of the first through holes on the substrate are located within the orthographic projections of the first openings on the substrate, and the minimum distance between the hole walls of the first through holes and the opening walls of the first openings in a direction parallel to the substrate is set to a first distance; The second through holes and the second openings are arranged in a one-to-one correspondence, the orthographic projection of the second through holes on the substrate is located within the orthographic projection of the second opening on the substrate, the minimum spacing between the hole wall of the second through hole and the mouth wall of the second opening in a direction parallel to the substrate is set to a second distance, and the first distance is set to be smaller 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, 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 1 μm≤(L2-L1)≤4 μm.

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 is ​​provided with a third opening for arranging a third filter, and the third filter is configured to filter light into a third color light; The mesh structure includes a third through hole that transmits the third color light; The third through hole and the third opening are arranged in 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 spacing between the hole wall of the third through hole and the mouth wall of the third opening in a direction parallel to the substrate is set to a third distance, and the first distance is set to be smaller than the third distance.

6. The display panel according to claim 1, wherein: The opening area of ​​the first opening is larger 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, and D>3μm.

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

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 having a plurality of pixel openings. The opening wall of the pixel opening includes an inclined first slope. The orthographic projection of the first slope 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: An included angle between the first inclined surface and the first plane is set to a first included angle, the first included angle is set to be 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: An end of the first inclined surface close to the base is a first end, an end of the first inclined surface away from the base is a second end, and a minimum distance between the first end and the second end in a direction parallel to the base is set to a fourth distance; The minimum distance between two adjacent pixel openings in a direction parallel to the substrate is set to a fifth distance, and a ratio of the fifth distance to the fourth distance is set to 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, 3nm<Ra<5nm.

14. A method for preparing a display panel, characterized in that: include: A light-emitting structure layer, a color filter structure layer and a touch structure layer are formed on a substrate, wherein the color filter structure layer is located on the substrate, the color filter structure layer includes a black matrix, the black matrix is ​​provided with 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; the touch structure layer is located on a 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 provided with a mesh structure, and the mesh structure is provided with a first pass that transmits the first color light a hole, 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, and the minimum spacing between the hole wall of the first through hole and the mouth wall of the first opening in a direction parallel to the substrate is set to 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 spacing between the hole wall of the second through hole and the mouth wall of the second opening in a direction parallel to the substrate is set to a second distance, and the first distance is set to be smaller than the second distance.

15. The method for manufacturing a display panel according to claim 14, wherein: The method of forming a light emitting structure layer, a color filter structure layer and a touch structure layer on a substrate includes: Depositing a pixel definition film on the substrate and performing a patterning process on the pixel definition film to form a first pattern, wherein the first pattern includes a pixel definition layer having a plurality of pixel openings; The curing instrument irradiates the pixel definition layer for a preset time to cure the pixel definition layer, 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 film structure layer and a touch structure layer are formed on a substrate, including: Depositing a pixel definition film on the substrate and performing a patterning process on the pixel definition film to form a first pattern, wherein the first pattern includes a pixel definition layer having a plurality of pixel openings; The curing instrument irradiates the pixel definition layer with a preset illumination to cure the pixel definition layer. The preset illumination is set to 35mW / cm 2 Up to 50 mW / cm 2 .

17. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 13.

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