Display panel, preparation method thereof and display device

Abstract

The invention discloses 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 control structure layer. The color film structure layer comprises a black matrix, the black matrix is provided with a plurality of matrix openings, and the plurality of matrix openings comprise a first opening for arranging a first optical filter and a second opening for arranging a second optical filter; the touch structure layer comprises a first touch conducting layer, the first touch conducting layer is arranged to be of a net structure, and the net structure is provided with a first through hole through which the first color light penetrates and a second through hole through which the second color light penetrates; 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 to be a second distance, and the first distance is set to be smaller than the second distance.

Description

Technical Field

[0001] The present invention relates to display technology, and more particularly to a display panel and a method for preparing the same, and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) and Quantum-dot Light Emitting Diode (QLED) 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, including: substrate; a color filter structure layer, located on the substrate, the color filter structure layer comprising a black matrix, the black matrix being provided with a plurality of matrix openings, the plurality of matrix openings comprising a first opening for arranging a first color filter, and a second opening for arranging a second color filter, the first color filter being configured to filter light into a first color light, and the second color filter being configured to filter light into a second color light; A touch structure layer, located on a side of the color film structure layer away from the substrate, the touch structure layer comprising a first touch conductive layer, the first touch conductive layer being arranged 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 one-to-one correspondence, the orthographic projection of the first through holes 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 holes and the second openings are arranged in 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.

[0004] In some exemplary embodiments, a ratio of the second distance to the first distance is set to K1, where 1<K1<1.9.

[0005] 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.

[0006] In some exemplary embodiments, 5.5 μm≤L1<7.5 μm.

[0007] In some exemplary embodiments, the black matrix is ​​provided with a third opening for arranging a third color filter, and the third color filter is configured to filter the light into a third color light; The mesh structure includes a third through hole that transmits the third color light; The third through holes and the third opening are arranged in one-to-one correspondence, the orthographic projection of the third through holes 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.

[0008] In some exemplary embodiments, an opening area of ​​the first opening is greater than an opening area of ​​the second opening.

[0009] In some exemplary embodiments, the first color light is set to green light, and the second color light is set to red light or blue light.

[0010] In some exemplary embodiments, the first touch conductive layer includes a plurality of first routing lines, 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 routing line is set to D, D>3μm.

[0011] In some exemplary embodiments, D=3.5 μm.

[0012] In some exemplary embodiments, a light emitting structure layer is further included, and the light emitting structure layer is located between the substrate and the color film structure layer; The light emitting structure layer includes a pixel definition layer having a plurality of pixel openings, the opening walls of the pixel openings include an inclined first slope, and the orthographic projection of the first slope on the substrate does not overlap with the orthographic projection of the black matrix on the substrate.

[0013] In some exemplary embodiments, 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 substrate.

[0014] 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; 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.

[0015] In some exemplary embodiments, the roughness of the first inclined surface is set to Ra, 3nm<Ra<5nm.

[0016] The present application provides a method for manufacturing a display panel, comprising: 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 comprises a black matrix, the black matrix is ​​provided with a plurality of matrix openings, the plurality of matrix openings comprises 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 comprises a first touch conductive layer, the first touch conductive layer is provided with a mesh structure, the mesh structure is provided with a first pass for transmitting the first color light The invention relates to a through 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.

[0017] In some exemplary embodiments, a light emitting structure layer, a color film structure layer and a touch control 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 device 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.

[0018] In some exemplary embodiments, a light emitting structure layer, a color film structure layer and a touch control 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, and the preset illumination is set to 35 mW / cm 2 Up to 50 mW / cm 2 .

[0019] An embodiment of the present application provides a display device, including the above-mentioned display panel.

[0020] 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, avoiding the modification of the mask and saving costs. The display panel of the embodiment of the present application can thicken the routing of the first touch conductive layer so that less ambient light is directed to the light-emitting structure layer, which can improve the color separation problem in the dark state. The display panel of the embodiment of the present application can adjust the inclination angle and roughness of the wall of the pixel opening to trap the ambient light entering the display panel in the screen, which can improve the color separation problem of the display panel in the dark state. This proposal is in line with the actual application of the product, is simple to operate in terms of process, has high feasibility of mass production, and has high practical application value.

[0021] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 is a structural schematic diagram of a display device; Figure 2 is a schematic diagram of a planar structure of a display panel; Figure 3 is a schematic diagram of a cross-sectional structure of a display device; Figure 4 is a schematic plan view of a display panel of the exemplary embodiment; Figure 5 for Figure 4 A schematic cross-sectional view of the aa direction in FIG. Figure 6 for Figure 4 Schematic diagram of the cross section along the bb direction; Figure 7A schematic diagram of ambient light of a display panel according to the exemplary embodiment; Figure 8 for Figure 4 Schematic diagram of the cc-direction cross section; Fig. 9 for Figure 5 A local enlarged schematic diagram of point A in FIG. Fig.10 for Fig. 9 Schematic diagram of the first slope in . DETAILED DESCRIPTION

[0024] The present application describes multiple embodiments, but the 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 the present application. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, 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.

[0025] 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 the present application may also be combined with any conventional features or elements to form a unique invention scheme. Any features or elements of any embodiment may also be combined with features or elements from other invention schemes to form another unique invention scheme. Therefore, it should be understood that any feature shown and / or discussed in the present application may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the attached claims and their equivalents, the embodiments are not subject to other restrictions. In addition, various modifications and changes may be made within the scope of protection of the attached claims.

[0026] 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 of the specific order described. As will be understood by those of ordinary skill in the art, other sequences of steps are also possible. Therefore, the specific sequence 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 the steps of performing them in the order written, and those skilled in the art can easily understand that these sequences can be changed and still remain within the spirit and scope of the embodiments of the present application.

[0027] This exemplary embodiment provides a display panel, including: substrate; a color filter structure layer, located on the substrate, the color filter structure layer comprising a black matrix, the black matrix being provided with a plurality of matrix openings, the plurality of matrix openings comprising a first opening for arranging a first color filter, and a second opening for arranging a second color filter, the first color filter being configured to filter light into a first color light, and the second color filter being configured to filter light into a second color light; A touch structure layer, located on a side of the color film structure layer away from the substrate, the touch structure layer comprising a first touch conductive layer, the first touch conductive layer being arranged 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 one-to-one correspondence, the orthographic projection of the first through holes 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 holes and the second openings are arranged in 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.

[0028] In some exemplary embodiments, a ratio of the second distance to the first distance is set to K1, where 1<K1<1.9.

[0029] 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.

[0030] In some exemplary embodiments, 5.5 μm≤L1<7.5 μm.

[0031] In some exemplary embodiments, the first touch conductive layer includes a plurality of first routing lines, 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 routing line is set to D, D>3μm.

[0032] In some exemplary embodiments, a light emitting structure layer is further included, and the light emitting structure layer is located between the substrate and the color film structure layer; The light emitting structure layer includes a pixel definition layer having a plurality of pixel openings, the opening walls of the pixel openings include an inclined first slope, and the orthographic projection of the first slope on the substrate does not overlap with the orthographic projection of the black matrix on the substrate.

[0033] In some exemplary embodiments, the 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°.

[0034] In some exemplary embodiments, the roughness of the first inclined surface is set to Ra, 3nm<Ra<5nm.

[0035] Figure 1 FIG. 1 is a schematic diagram of the structure of a display device. Figure 1As shown, 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 respectively connected to the data driver, the scan driver and the light emitting driver, the data driver is respectively connected to a plurality of data signal lines (D1 to Dn), the scan driver is respectively connected to a plurality of scan signal lines (S1 to Sm), and the light emitting driver is respectively connected to a plurality of light emitting signal lines (E1 to Eo). The pixel array may include a plurality of sub-pixels ij, 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, and the pixel circuit is connected to the scan signal line, the light emitting signal line and the data signal line. In some exemplary embodiments, the timing controller may provide a grayscale value and a control signal suitable for the specifications of the data driver to the data driver, may provide a clock signal suitable for the specifications of the scan driver, a scan start signal, etc. to the scan driver, and may provide a clock signal suitable for the specifications of the light emitting driver, an emission stop signal, etc. to the light emitting driver. The data driver can generate data voltages to be provided to data signal lines D1, D2, D3, ... and Dn using grayscale values ​​and control signals received from the timing controller. For example, the data driver can sample grayscale values ​​using a clock signal, and apply data voltages corresponding to grayscale values ​​to data signal lines D1 to Dn in units of unit lines, where n can be a natural number. The scan driver can generate scan signals to be provided to scan signal lines S1, S2, S3, ... and Sm by receiving clock signals, scan start signals, etc. from the timing controller. For example, the scan driver can sequentially provide scan signals with conduction level pulses to scan signal lines S1 to Sm. For example, the scan driver can be constructed in the form of a shift register, and can sequentially transmit scan start signals provided in the form of conduction level pulses to the next level circuit under the control of the clock signal to generate scan signals, where m can be a natural number. The light-emitting driver can generate emission signals to be provided to light-emitting signal lines E1, E2, E3, ... and Eo by receiving clock signals, emission stop signals, etc. from the timing controller. For example, the light emitting driver may sequentially provide an emission signal having a cut-off level pulse to the light emitting signal lines E1 to Eo. For example, the light emitting driver may be configured in the form of a shift register, and may generate an emission signal in a manner of sequentially transmitting an emission stop signal provided in the form of a cut-off level pulse to a next stage circuit under the control of a clock signal, and o may be a natural number. In some exemplary embodiments, a pixel array may be provided on a display panel.

[0036] 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, and 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, and the circuit unit may include at least a pixel circuit, and the pixel circuit is respectively connected to a scan signal line, a light-emitting signal line, and a data signal line, and 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, and 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.

[0037] 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-pixel may be a rectangle, a rhombus, a pentagon, or a hexagon, and the three sub-pixels may be arranged in a horizontal parallel, a vertical parallel, or a square, etc., which is not limited in the present disclosure. 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-straight line such as a square arrangement. In some exemplary embodiments, the pixel unit P may include four sub-pixels, and the four sub-pixels may be arranged in a horizontal parallel, a vertical parallel, or a square, etc., which is not limited in the present disclosure.

[0038] Figure 3 This is a schematic diagram of a cross-sectional structure of a display device, illustrating a structure that uses white light combined with a 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 film 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 film 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 the present disclosure.

[0039] In some exemplary embodiments, the substrate 100 may be a polyimide (PI) substrate, but is not limited thereto, and may be, for example, a glass substrate. The circuit structure layer 200 may be prepared on the substrate 100 by a silicon semiconductor process (e.g., a CMOS process), and the circuit structure layer 200 may include a plurality of circuit units, and the circuit unit may include at least a pixel circuit, and the pixel circuit is respectively connected to a scanning signal line and a data signal line, and the pixel circuit may include a plurality of transistors and a storage capacitor, and the transistor may include a gate electrode, a first electrode, and a second electrode, and the gate electrode, the first electrode, and the second electrode may be respectively connected to corresponding connection electrodes by vias filled with tungsten metal (i.e., tungsten vias, W-vias), and may be connected to other electrical structures (such as routing, etc.) by the connection electrodes.

[0040] In some exemplary embodiments, the light emitting structure layer 300 may include a plurality of light emitting devices, and the light emitting devices 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 through 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 the second power line. The organic light emitting layer emits light under the drive of the anode and the cathode. In some exemplary embodiments, the organic light emitting layer may include a light emitting layer (EML for short), 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).

[0041] In some exemplary embodiments, the first encapsulation layer 400 may adopt a thin film encapsulation (TFE) method to ensure that external water vapor cannot enter the light-emitting structure layer. The first encapsulation layer 400 may adopt a three-layer stacked structure of inorganic / organic / inorganic to ensure that external water vapor cannot enter the light-emitting element. However, this embodiment is not limited to this. For example, the encapsulation structure layer may adopt a five-layer stacked structure of inorganic / organic / inorganic / organic / inorganic.

[0042] In some exemplary embodiments, the color filter structure layer 500 may include a black matrix (BM) and a color filter (CF), and the color filters are respectively arranged on the red sub-pixel, the green sub-pixel and the blue sub-pixel to filter the white light emitted by the light-emitting device into red (R) light, green (G) light and blue (B) light, and the black matrix may be located between adjacent color filters. In this example, the color filter is formed by adopting the color filter integrated into the encapsulation layer (COE, Color On Encapsulation) technology, which can significantly reduce the thickness compared with the polarizer and achieve a better flexibility effect; moreover, compared with the elimination effect of the circular polarizer on natural light, the black matrix and the filter unit of the color filter structure layer 500 have a light absorption function. When the external natural light is irradiated, the natural light will pass through the filter unit to irradiate the sub-pixel below it. After the natural light is reflected by the sub-pixel, it is emitted from the filter unit together with the light generated by the sub-pixel itself, which can improve the light output rate of the natural light, thereby achieving the function of reducing power consumption. The touch structure layer 600 can be located on the side of the color film structure layer 500 away from the substrate 100 . The cover layer 700 can be made of glass or a flexible plastic colorless polyimide. The cover layer 700 is located on the side of the touch structure layer 600 away from the substrate 100 .

[0043] Color separation in dark state refers to the phenomenon of uneven color or color shift in the dark state of the display device (i.e., when displaying black or low-brightness images). This phenomenon is usually related to display technology, optical design or material properties, especially in OLED or LCD display screens. The applicant found that the reflected light of products using COE technology appears colored in the ambient light application scenario when the screen is off, that is, color separation occurs. This phenomenon is caused by the separation of the reflection directions of light of different colors due to the unevenness of the anode, and the diffraction phenomenon formed by the openings of the pixel definition layer and the black matrix. At present, the improvement methods for the color separation phenomenon in the dark state of COE products are mainly concentrated in three directions, but the effects of these three directions are not ideal. For example, the first improvement method, specifically improving the flatness of the anode, uses a thickened flat layer, which can slightly improve the color separation phenomenon, but the final effect is not ideal. For another example, the second improvement method, specifically reducing the openings of the pixel definition layer and the black matrix, can effectively improve the color separation phenomenon, but the life, power consumption, and reliability optics will deteriorate. For example, the third improvement method, which is to adopt a circular pixel design, requires the entire mask to be redesigned, which greatly increases the cost, and there is no reference data for optical characteristics, display quality, and reliability.

[0044] The technical solution of the embodiment of the present invention is described in detail below through specific embodiments.

[0045] Figure 4is a schematic plan view of a display panel of the exemplary embodiment. Figure 5 for Figure 4 The cross-sectional diagram along the aa direction 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 according to the present embodiment. 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 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, and the black matrix 501 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 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, and the first touch conductive layer 602 is configured to be a mesh structure, and the mesh structure is provided with a first through hole 604-1 for transmitting the first color light, and a second through hole 604-2 for transmitting 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 is 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). Therefore, 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 so that less ambient light is directed to the light emitting structure layer. Moreover, the display panel of this embodiment 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, avoiding the mask modification and saving costs.

[0046] In some exemplary embodiments, Figures 4 to 6As shown, the display panel further includes a light emitting structure layer 300, and the light emitting structure layer 300 may be located between the substrate 100 and the color film 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 be provided with a plurality of pixel openings 302, and one pixel opening 302 may expose at least part of the surface of a corresponding first electrode 303. The organic light emitting layer 304 may be disposed in one 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 column layer (not shown in the figure) may be further 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 column layer may include a plurality of isolation columns (PS).

[0047] In some exemplary embodiments, Figures 4 to 6 As shown, the organic light-emitting layer 304 can emit light of corresponding colors under the drive 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 a light-emitting layer (Emitting Layer, referred to as EML), and 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). Under the voltage drive of the first electrode 303 and the second electrode 305, the light-emitting characteristics of the organic material can be used to emit light according to the required grayscale.

[0048] In some exemplary embodiments, Figures 4 to 6As shown, a pixel unit may include four sub-pixels 306, and the shape of the sub-pixel may be a rectangle, a rhombus, a pentagon or a hexagon. The sub-pixel 306 in this example may be a rectangle. The four sub-pixels 306 may include two first sub-pixels 306-1, a second sub-pixel 306-2 and a 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 in a horizontal parallel, vertical parallel or square manner. The four sub-pixels 306 in this example may be arranged in a square manner. 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.

[0049] In some exemplary embodiments, Figures 4 to 6As shown, there may be a first encapsulation layer 400 between the light emitting structure layer 300 and the color filter structure layer 500, and the color filter structure layer 500 is made 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, and 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 filtered light. The color filter 503 corresponds to the light emitting device one by one. 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 correspond to the third light emitting device. The black matrix 501 separates different color filters 503, such as the first filter 503-1, the second filter 503-2, the third filter 503-3, etc. The black matrix 501 is dug to arrange the above-mentioned color filters 503, and 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 are in a one-to-one correspondence, and the orthographic projection of the pixel opening 302 on the substrate 100 is located within the orthographic projection of the matrix openings 502 on the substrate 100. The matrix opening 502 may penetrate the black matrix 501 in the third direction, and the matrix opening 502 includes a first opening 502-1, a second opening 502-2, and a third opening 502-3. The first filter 503-1 may be arranged in the first opening 502-1, the second filter 503-2 may be arranged in the second opening 502-2, and the third filter 503-3 may be arranged in the third opening 502-3. The first filter 503-1 may filter the light emitted by the first light-emitting device into the first color light, the second filter 503-2 may filter the light emitted by the second light-emitting device into the second color light, and the third filter 503-3 may filter the light emitted by the third light-emitting device into the third color light. The first color light may be green light, the second color light may be red, and the third color light may be blue light, but is not limited thereto. For example, the first color light may be green light, the second color light may be blue, and the third color light may be red light. For another example, the first color light may be red light, the second color light may be green, and the third color light may be blue light.

[0050] In some exemplary embodiments, Figures 4 to 6As shown, 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 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, it 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 are all the same.

[0051] In some exemplary embodiments, Figures 4 to 6 As shown, the touch structure layer 600 may be located in the touch buffer layer 601, the first touch conductive layer 602 and the touch encapsulation layer 603, and the touch buffer layer 601, the first touch conductive layer 602 and the touch encapsulation layer 603 are arranged in sequence in the direction away from the substrate 100. The first touch conductive layer 602 may be a multi-layer thin film structure, for example, a multi-layer thin film structure composed of titanium (Ti) and aluminum (Al) alternately, that is, a multi-layer 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, which is unfolded on a plane parallel to the substrate 100, and has a first through hole 604-1, a second through hole 604-2 and a third through hole 604-3, and the first through hole 604-1, the second through hole 604-2 and the third through hole 604-3 penetrate 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 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 is 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 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 is 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 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 is located within the orthographic projection of the third through hole 604-3 on the substrate 100.

[0052] 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 mouth wall of the first opening 502-1 can be the first side wall 504-1, the mouth wall of the second opening 502-2 can be the second side wall 504-2, and the mouth 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 hole wall of the first through hole 604-1 can be the first hole wall 605-1, the hole wall of the second through hole 604-2 can be the second hole wall 605-2, and the hole wall of the third through hole 604-3 can be the third hole wall 605-3. The first side wall 504-1 and the first hole wall 605-1 have the same spacing in the circumferential direction of the first opening 502-1, and the spacing between the first side wall 504-1 and the first hole wall 605-1 in the direction parallel to the substrate 100 is L1; the second side wall 504-2 and the second hole wall 605-2 have the same spacing in the circumferential direction of the second opening 502-2, and the spacing between the second side wall 504-2 and the second hole wall 605-2 in the direction parallel to the substrate 100 is L2; ​​the third side wall 504-3 and the third hole wall 605-3 have the same spacing in the circumferential direction of the third opening 502-3, and the spacing between the third side wall 504-3 and the third hole wall 605-3 in the direction parallel to the substrate 100 is L3. In some exemplary embodiments, L2=L3>L1, but not limited thereto, 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, 1<K1<1.9, that is, 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 1μm and less than or equal to 4μm, that is, 1μm≤(L2-L1)≤4μm. In some exemplary embodiments, the value of the first distance (L1) may be 5.5μm to 7.5μm, 5.5μm≤L1<7.5μm.

[0053] Figure 7 is a schematic diagram of ambient light of a display panel of the present exemplary embodiment. In some exemplary embodiments, Figure 7 As shown, 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 be emitted from the first opening 502-1 to the light emitting structure layer 300. The first through hole 504-1 of this example is retracted, so that the hole wall of the first through hole 504-1 is close to the first opening 502-1, and part of the ambient light can be irradiated onto the first touch conductive layer 602 as shown by the dotted arrow, and 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.

[0054] In some exemplary embodiments, Figures 4 to 6As shown, the value of the first distance (L1) may be 6 μm, and the second distance (L2) and the third distance (L3) may be 9 μm. However, it is not limited thereto. For example, the value of the first distance (L1) may be 6.5 μm, and the second distance (L2) and the third distance (L3) may be 8.5 μm; for another example, the value of the first distance (L1) may be 7.0 μm, and the second distance (L2) and the third distance (L3) may be 8.0 μm; for another example, the value of the first distance (L1) may be 5.5 μm, and the second distance (L2) and the third distance (L3) may be 9.5 μm. The applicant conducted experiments and collected data on lifespan, power consumption, reliability, and visual color separation effects. Among them, Scheme 1 can be an existing display panel, that is, the first distance (L1), the second distance (L2), and the third distance (L3) are all equal; in Scheme 2, the value of the first distance (L1) can be 6μm, and the second distance (L2) and the third distance (L3) can be 9μm; Scheme 1 and Scheme 2, the lifespan, power consumption, and reliability have not deteriorated significantly, the visual color separation effect of Scheme 1 can be color separation LV2, and the visual color separation effect of Scheme 2 can be color separation LV0. The degree of color separation is usually expressed by color separation LV (Level). The smaller the color separation LV value, the lower the degree of color separation and the better the display effect. Color separation LV2 and color separation LV0 are quantitative indicators of the degree of color separation. It can be seen that the degree of color separation in Scheme 2 is lower. Therefore, the display panel of this example has significantly optimized color separation and will not affect lifespan, power consumption, and reliability.

[0055] Figure 8 for Figure 4 In the cc 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, and the plurality of first traces 606 may be cross-arranged on a plane parallel to the substrate 100 to form a mesh structure, and the first traces 606 cross 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, and D ≥ 2.5 μm. The width of the first trace 606 may be a dimension in a direction perpendicular to the extension direction of the first trace 606 and parallel to the substrate 100. For example, at the cc cross section, the first trace 606 may extend along the second direction, and the width of the first trace 606 may be a dimension of the first trace 606 in the first direction. Both the first direction and the second direction 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 line 606 may be 3.5 μm, that is, D=3.5 μm. The width of the first line 606 is larger than the current line width (3 μm), so that the hole wall of the first through hole 604-1 surrounded by the first line 606 is closer to the first opening 504-1. As shown by the dotted arrow, part of the ambient light can be irradiated onto the first touch conductive layer 602 and 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 line 606 may be 3.2 μm, that is, D=3.2 μm; for another example, the width of the first line 606 may be 4 μm, that is, D=4 μm; for another example, the width of the first line 606 may be 3.7 μm, that is, D=3.7 μm.

[0056] Fig. 9 for Figure 5 In the partially enlarged schematic diagram of A in FIG. 1 , in some exemplary embodiments, as shown in FIG. Figure 5 and Fig. 9 As shown, the mouth wall of the pixel opening 302 includes a first inclined surface 302-1 that is inclined, 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 from the direction away from the substrate 100. The pixel opening 302 may be a horn hole, and the cross-section of the pixel opening 302 in a 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 Fig. 9The ambient light irradiated to 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 is trapped in the screen, which can improve the color separation problem of the display panel in the dark state. But not limited to this, for example, α=36.8°, or α=45.2°, or α=49.5°.

[0057] In some exemplary embodiments, Figure 5 and Fig. 9 As shown, the applicant tested the display panel of this example and the current display panel, wherein Scheme 1 may be the current display panel, in which α=28.6°, and the color separation degree of Scheme 1 may be color separation LV3. For the display panel of Scheme 2, α=32.5°, and the color separation degree of Scheme 2 may be color separation LV1; for the display panel of Scheme 3, α=36.8°, and the color separation degree of Scheme 3 may be color separation LV1; for the display panel of Scheme 4, α=45.2°, and the color separation degree of Scheme 4 may be color separation LV0.5; for the display panel of Scheme 5, α=49.5°, and the color separation degree of Scheme 5 may be color separation 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 degree and the better the display effect. Color separation LV3, color separation LV1, and color separation LV0.5 are all quantitative indicators of the degree of color separation. It can be seen that the color separation of schemes 2 to 5 is due to scheme 1. The display panel of this example has significantly optimized color separation and will not affect the lifespan, power consumption, and reliability.

[0058] In some exemplary embodiments, Figure 5 and Fig. 9 As shown, the end of the first inclined surface 302-1 close to the substrate 100 is the first end 302-2, and the end of the first inclined surface 302-1 away from the substrate 100 is 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 to the fourth distance, i.e., L4. In this example, the spacing between the first end 302-2 and the second end 302-3 in the first direction may be L4. The minimum distance between two adjacent pixel openings 302 in the direction parallel to the substrate 100 is set to the fifth distance, i.e., L5. In this example, the spacing between two adjacent pixel openings 302 in the first direction may be L5.

[0059] In some exemplary embodiments, Figure 5 and Fig. 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=6μm, L4=3.5μm, but not limited thereto, for example, L5=6μm, L4=3μm; for another example, L5=6μm, L4=2.5μm; for another example, L5=6μm, L4=3.2μm.

[0060] In some exemplary embodiments, Figure 5 and Fig. 9 As shown, 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 ultraviolet light exposure time. The curing device may emit ultraviolet light, and the ultraviolet light exposure may cure the pixel definition layer 301. When the ultraviolet light exposure time is 0s, the first angle (α) can generally reach 28.6°. At this time, the first angle (α) is 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 exposure time is increased to 10s, the first angle (α) will increase to 32.5°. If the ultraviolet light exposure time is further increased to 20s, 30s, and 40s, the first angle (α) can be increased to 36.8°, 45.2°, and 49.5°, respectively.

[0061] Fig.10 for Fig. 9 In the first inclined plane schematic diagram, in some exemplary embodiments, as Fig.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 diffuse reflection is emitted when light hits the first inclined surface 302-1. Fig.10 As shown, when the ambient light indicated by the dotted arrow is irradiated on the first inclined surface 302-1, diffuse reflection occurs, the reflection ability 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.

[0062] In some exemplary embodiments, Fig.10As shown, the applicant tested the display panel of this example and the current display panel, wherein Scheme 1 may be the current display panel, in which Scheme 1, the roughness of the first inclined surface 302-1 may be roughness LV0, and the color separation degree of Scheme 1 may be color separation LV3. In the display panel of Scheme 2, the roughness of the first inclined surface 302-1 may be 3nm to 5nm, the roughness may be roughness LV0.5, and the color separation degree of Scheme 2 may be LV1.5. 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 degree 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 usually expressed 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 the degree of color separation. There may also be schemes 3 and 4, in which the roughness levels are respectively LV1 and LV2, both of which are greater than the roughness of scheme 1. The color separation of schemes 2 to 4 is due to scheme 1, and the display panel of this example has significantly optimized color separation, and does not affect life, power consumption, and reliability.

[0063] In some exemplary embodiments, Fig.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 light flux received per unit area, which 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 first inclined surface 302-1 has a roughness of LV0, the color separation phenomenon is obvious. 2 , the roughness of the first inclined surface 302-1 will increase to roughness LV0.5, at which time the color separation phenomenon is weakened. If the illumination of the ultraviolet light is further increased to 40mW / cm 2 、50mW / cm 2 When the first inclined surface 302-1 has a roughness of LV1 and a roughness of LV2, the first inclined surface 302-1 may have a roughness of LV1 and a roughness of LV2. 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 LV0.5, the grayscale at startup is not significantly deteriorated, and the lifespan, power consumption, and reliability are not significantly deteriorated.

[0064] The following is an exemplary description 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 any one or more of sputtering, evaporation, and chemical vapor deposition, coating can be any one or more of spraying, spin coating, and inkjet printing, and etching can be 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 of a certain material on a substrate 100 by deposition, coating, or other processes. 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". The "A and B are arranged in the same layer" mentioned in the present disclosure means that A and B are formed simultaneously through the same patterning process, and the "thickness" of the film layer is the size of the film layer in the direction perpendicular to the display panel. In the exemplary embodiments of the present 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 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.

[0065] In an exemplary embodiment, a process of preparing a display panel may include the following steps.

[0066] Step 1: forming a light emitting structure layer 300 on a substrate 100 .

[0067] In some exemplary embodiments, Figure 5 , Figure 6 , Figure 8 , Fig. 9 and Fig.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.

[0068] 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.

[0069] 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, wherein 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, and the pixel definition film in the pixel opening 302 is removed to expose the surface of the first electrode 303.

[0070] Subsequently, the pixel definition layer 301 is cured by using a curing device to irradiate the pixel definition layer 301 . The curing device can emit ultraviolet rays. The curing device can irradiate the pixel definition layer 301 according to a preset time and a preset illumination.

[0071] In some exemplary embodiments, the first angle (α) is adjusted by controlling the curing process of the pixel definition layer 301, and the first angle (α) may be positively correlated with the ultraviolet light irradiation time, and the curing device may emit ultraviolet light, and the ultraviolet light irradiation may cure the pixel definition layer 301. If the preset time is 10s, the first angle (α) will increase to 32.5°, and if the preset time is 20s, 30s, and 40s respectively, the first angle (α) may increase to 36.8°, 45.2°, and 49.5° respectively.

[0072] 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 life, power consumption, and reliability are not significantly deteriorated. However, it is not limited to this. For example, the preset illumination can also be 40 mW / cm 2 and 50 mW / cm 2 .

[0073] Subsequently, on the substrate 100 formed with the aforementioned pattern, an organic light emitting layer 304 located in each sub-pixel is formed 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).

[0074] Subsequently, a cathode pattern is formed by evaporation using an open mask, the cathode pattern including a second electrode 305, and the second electrode 305 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.

[0075] At this point, the pattern of the light emitting structure layer 300 is prepared, and then the first encapsulation structure layer 400 and the color filter structure layer 500 are prepared.

[0076] Step 2: forming a touch control structure layer 600 on the color filter structure layer 500 .

[0077] In some exemplary embodiments, Figure 5 , Figure 6 , Figure 8 , Fig. 9 and Fig.10 As shown, forming the touch control structure layer 600 on the color filter structure layer 500 may include: depositing a touch control conductive film, and then forming a first touch control conductive layer 602 by a patterning process.

[0078] 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.

[0079] 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.

[0080] After the touch structure 600 is completed, a cover layer 700 is formed to obtain the following Figure 5 The display panel shown.

[0081] In some exemplary embodiments, a display device includes the above-mentioned display panel. The display device provided in the embodiments of the present disclosure can be applied to electronic devices, which can be mobile phones, tablet computers, televisions, monitors, laptop computers, digital photo frames, navigators, car displays, wearable devices, and any products or components with display functions, such as smart watches, smart bracelets, smart glasses, smart headphones, smart clothing, head-mounted displays, etc.

[0082] The present application provides a method for manufacturing a display panel, comprising: 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. The color filter structure layer 500 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 be a mesh structure. The mesh structure is provided with a first through hole 604 for transmitting 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.

[0083] 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 referred device or element 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.

[0084] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include at least one of the features.

[0085] In the description of the present application, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0086] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; 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 connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0087] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. 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 this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0089] 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 limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify 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 comprising a black matrix, the black matrix being provided with a plurality of matrix openings, the plurality of matrix openings comprising a first opening for arranging a first color filter, and a second opening for arranging a second color filter, the first color filter being configured to filter light into a first color light, and the second color filter being configured to filter light into a second color light; A touch structure layer, located on a side of the color film structure layer away from the substrate, the touch structure layer comprising a first touch conductive layer, the first touch conductive layer being arranged 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 one-to-one correspondence, the orthographic projection of the first through holes 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 holes and the second openings are arranged in 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, characterized in that: 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, characterized in that: The first distance is set to L1, the second distance is set to L2, 1 μm≤(L2-L1)≤4 μm.

4. The display panel according to claim 3, characterized in that: 5.5μm≤L1<7.5μm.

5. The display panel according to claim 1, characterized in that: The black matrix is ​​provided with a third opening for arranging a third filter, and the third filter is configured to filter the light into a third color light; The mesh structure includes a third through hole that transmits the third color light; The third through holes and the third opening are arranged in one-to-one correspondence, the orthographic projection of the third through holes 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, characterized in that: An opening area of ​​the first opening is greater than an opening area of ​​the second opening.

7. The display panel according to claim 1, characterized in that: 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, characterized in that: The first touch conductive layer includes a plurality of first wirings, which are arranged to be cross-arranged 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 wiring is set to D, and D>3μm.

9. The display panel according to claim 8, characterized in that: D=3.5μm.

10. The display panel according to claim 1, characterized in that: It also includes a light-emitting structure layer, which is located between the substrate and the color film structure layer; The light emitting structure layer includes a pixel definition layer having a plurality of pixel openings, the opening walls of the pixel openings include an inclined first slope, and 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, characterized in that: The included angle between the first inclined surface and the first plane is set to be 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, characterized in that: 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; 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, characterized in that: 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 comprises a black matrix, the black matrix is ​​provided with a plurality of matrix openings, the plurality of matrix openings comprises 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 comprises a first touch conductive layer, the first touch conductive layer is provided with a mesh structure, the mesh structure is provided with a first pass for transmitting the first color light The invention relates to a through 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 preparing a display panel according to claim 14, characterized in that: The method of forming a light emitting structure layer, a color film structure layer and a touch structure layer on a substrate comprises: 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 device 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 preparing a display panel according to claim 14, characterized in that: 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, and the preset illumination is set to 35mW / cm 2 Up to 50 mW / cm 2 .

17. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 13.

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