Display panel, display device and preparation method of display panel

Abstract

The invention discloses a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, an isolation structure and a touch layer. The isolation structure is arranged on the substrate and encloses a plurality of isolation openings. The isolation structure is provided with the light-transmitting opening, so that the transmittance of the display panel can be improved. The substrate comprises a signal transmission layer and a signal shielding layer, the signal shielding layer is located on the side, away from the substrate, of the signal transmission layer, and the signal shielding layer comprises a first signal line and a light-transmitting shielding part. The orthographic projection of the light-transmitting opening on the substrate and the orthographic projection of the light-transmitting shielding part on the substrate are at least partially overlapped, that is, the light-transmitting shielding part covers at least part of the light-transmitting opening, so that a touch signal of the touch layer is at least partially shielded by the light-transmitting shielding part after passing through the light-transmitting opening; the problem that a touch signal of a touch layer and an array signal of a substrate influence each other through a light-transmitting opening is solved, and therefore the use performance of an OLED display product is improved.

Description

Technical Field

[0001] The present application relates to the display field, and in particular to a display panel, a display device and a method for manufacturing a display panel. Background Art

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the invention

[0004] The embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, aiming to improve the performance of OLED display products.

[0005] A first aspect of the present application provides a display panel, which includes a substrate, a signal transmission layer and a signal shielding layer, wherein the signal shielding layer is located on a side of the signal transmission layer away from the substrate, and the signal shielding layer includes a first signal line and a light-transmitting shielding portion; an isolation structure is located on one side of the substrate, the isolation structure encloses an isolation opening and a light-transmitting opening, the isolation opening is used to set a light-emitting unit, and an orthographic projection of the light-transmitting opening on the substrate and an orthographic projection of the light-transmitting shielding portion on the substrate at least partially overlap; a touch layer is located on a side of the signal shielding layer away from the signal transmission layer.

[0006] According to an implementation of the first aspect of the present application, an orthographic projection of the light-transmitting opening on the substrate is located within an orthographic projection of the light-transmitting shielding portion on the substrate.

[0007] According to an implementation of the first aspect of the present application, the light-transmitting shielding portion and the first signal line are connected to each other.

[0008] According to an implementation of the first aspect of the present application, there are multiple first signal lines, the multiple first signal lines are arranged side by side, adjacent first signal lines are arranged at intervals to form gaps, and the light-transmitting shielding part is located in the gaps.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the light-transmitting shielding portion is electrically connected to one or more first signal lines adjacent thereto.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, one of the light-transmitting shielding portions is arranged correspondingly to one of the light-transmitting openings, and / or one of the light-transmitting shielding portions is arranged correspondingly to a plurality of the light-transmitting openings.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, an orthographic projection of the light-transmitting shielding portion on the substrate at least partially overlaps with an orthographic projection of the first signal line on the substrate.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the first signal line on the substrate is located within the orthographic projection of the light-transmitting shielding portion on the substrate.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the light-transmitting shielding portion encloses a first opening, the signal shielding layer also includes a second signal line, the first signal line and the second signal line are located in the first opening, and the second signal line is insulated from the light-transmitting shielding portion.

[0014] According to any of the aforementioned implementations of the first aspect of the present application, the second signal line includes a data signal line.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, both ends of the first signal line are overlapped with the light-transmitting shielding portion.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the light-transmitting shielding portion and the first signal line are made of different materials, and the first signal line is made of a non-light-transmitting conductive material.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the light-transmitting shielding portion includes indium tin oxide or indium zinc oxide.

[0018] According to any of the aforementioned implementations of the first aspect of the present application, the first signal line includes: a power signal line and / or a reference signal line.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes: a light-emitting layer, located on one side of the substrate, the light-emitting layer including a light-emitting unit located in the isolation opening; a first electrode layer, located on the side of the light-emitting layer away from the substrate, the first electrode layer including a first electrode located in the isolation opening, and the first electrode is electrically connected to the isolation structure.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of each light-emitting unit on the substrate is located within the orthographic projection of each first electrode on the substrate.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the light-emitting unit and the isolation structure are spaced apart.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure includes a first conductive layer and a second layer located on the side of the first conductive layer facing away from the substrate, and the orthographic projection of the first conductive layer on the substrate is located within the orthographic projection of the second layer on the substrate.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the second layer includes a conductive material or an insulating material.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the second layer includes a metal material, and the first conductive layer and the second layer are made of different materials.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure further includes a third layer located on the side of the first conductive layer facing the substrate, and the orthographic projection of the first conductive layer on the substrate is located within the orthographic projection of the third layer on the substrate.

[0026] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes: a pixel definition layer located on one side of the substrate, the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, the pixel opening is connected to the isolation opening, and the light-emitting unit is located at the pixel opening.

[0027] According to any of the aforementioned implementations of the first aspect of the present application, the isolation structure is located on a side of the pixel defining portion facing away from the substrate.

[0028] According to any of the aforementioned implementations of the first aspect of the present application, a second opening is provided on the pixel defining portion, and the isolation structure is located in the second opening.

[0029] According to any of the aforementioned implementations of the first aspect of the present application, the display panel further includes a pixel electrode, and the pixel electrode is exposed by the pixel opening.

[0030] An embodiment of a second aspect of the present application provides a display device, which includes a display panel according to any of the above embodiments.

[0031] An embodiment of a third aspect of the present application provides a method for preparing a display panel, including:

[0032] Prepare a substrate, the substrate comprising a signal transmission layer and a signal shielding layer, the signal shielding layer is located on a side of the signal transmission layer away from the substrate, and the signal shielding layer comprises a first signal line and a light-transmitting shielding portion;

[0033] An isolation structure is prepared on the substrate, the isolation structure encloses an isolation opening and a light-transmitting opening, the isolation opening is used to set the light-emitting unit, and the orthographic projection of the light-transmitting opening on the substrate and the orthographic projection of the light-transmitting shielding portion on the substrate at least partially overlap;

[0034] A touch layer is prepared on the side of the signal shielding layer away from the signal transmission layer.

[0035] According to the display panel of the embodiment of the present application, the display panel includes a substrate, an isolation structure and a touch layer. The isolation structure is arranged on the substrate and encloses a plurality of isolation openings, which is used to separate the light-emitting layer to form mutually disconnected light-emitting units, thereby reducing the crosstalk of carriers in the light-emitting layer, improving the display effect of the display panel, and the light-emitting unit does not need to use a precision mask plate, which can reduce the development and use of the precision mask plate and reduce the preparation cost. A light-transmitting opening is opened on the isolation structure, which can improve the transmittance of the display panel. The substrate includes a signal transmission layer and a signal shielding layer, the signal shielding layer includes a first signal line and a light-transmitting shielding part, and the signal shielding layer is located on the side of the signal transmission layer away from the substrate. The orthographic projection of the light-transmitting opening on the substrate and the orthographic projection of the light-transmitting shielding part on the substrate at least partially overlap, that is, the light-transmitting shielding part covers at least part of the light-transmitting opening, so that the touch signal of the touch layer is at least partially shielded by the light-transmitting shielding part after passing through the light-transmitting opening, so as to improve the problem of the touch signal of the touch layer and the array signal of the substrate affecting each other through the light-transmitting opening, thereby improving the performance of the OLED display product. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0037] Figure 1 is a cross-sectional schematic diagram of a display panel provided in an embodiment of the present application;

[0038] Figure 2 is a schematic top view of a display panel provided in an embodiment of the present application;

[0039] Figure 3 is a partial cross-sectional view of a display panel in another embodiment;

[0040] Figure 4 is a partial top view of a display panel in another embodiment;

[0041] Figure 5 is a partial top view of a display panel in yet another embodiment;

[0042] Figure 6 is a partial top view of a display panel in yet another embodiment;

[0043] Figure 7 is a partial cross-sectional view of a display panel in yet another embodiment;

[0044] Figure 8 is a partial cross-sectional view of a display panel in yet another embodiment;

[0045] Fig. 9is a partial top view of a display panel in yet another embodiment;

[0046] Fig.10 is a partial cross-sectional view of a display panel in yet another embodiment;

[0047] Fig.11 is a partial cross-sectional view of a display panel in yet another embodiment;

[0048] Fig.12 It is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0049] Description of reference numerals:

[0050] 10. Display panel;

[0051] 100, substrate; 110, signal transmission layer; 120, signal shielding layer; 121, first signal line; 122, light-transmitting shielding portion; 123, gap; 124, first opening; 125, second signal line;

[0052] 200, isolation structure; 210, first conductive layer; 220, second layer; 230, third layer; 240, isolation opening; 250, light-transmitting opening;

[0053] 300, touch layer;

[0054] 400, light-emitting layer; 410, light-emitting unit;

[0055] 500, first electrode layer; 510, first electrode;

[0056] 600, pixel definition layer; 610, pixel defining portion; 620, pixel opening; 630, second opening; 640, pixel electrode;

[0057] 700, encapsulation layer; 710, first sublayer; 711, first subsection; 720, second sublayer; 721, second subsection; 730, third sublayer. DETAILED DESCRIPTION

[0058] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0060] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0061] The embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel. The embodiments of the display panel, the display device, and the method for manufacturing a display panel are described below in conjunction with the accompanying drawings.

[0062] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0063] Please also read Figure 1 and Figure 2 , Figure 1 is a cross-sectional schematic diagram of a display panel provided in an embodiment of the present application; Figure 2 It is a schematic top view of a display panel provided in an embodiment of the present application.

[0064] like Figure 1 and Figure 2As shown, a first embodiment of the present application provides a display panel 10, which includes a substrate 100, an isolation structure 200 and a touch layer 300. The substrate 100 includes a signal transmission layer 110 and a signal shielding layer 120. The signal shielding layer 120 is located on the side of the signal transmission layer 110 away from the substrate 100, and the signal shielding layer 120 includes a first signal line 121 and a light-transmitting shielding portion 122; the isolation structure 200 is located on one side of the substrate 100, and the isolation structure 200 encloses an isolation opening 240 and a light-transmitting opening 250. The isolation opening 240 is used to set a light-emitting unit 410, and the orthographic projection of the light-transmitting opening 250 on the substrate 100 and the orthographic projection of the light-transmitting shielding portion 122 on the substrate 100 at least partially overlap; the touch layer 300 is located on the side of the signal shielding layer 120 away from the signal transmission layer 110.

[0065] According to the display panel 10 of the embodiment of the present application, the display panel 10 includes a substrate 100, an isolation structure 200 and a touch layer 300. The isolation structure 200 is arranged on the substrate 100 and encloses a plurality of isolation openings 240, which are used to separate the light-emitting layer 400 to form mutually disconnected light-emitting units 410, thereby reducing the crosstalk of carriers in the light-emitting layer 400, improving the display effect of the display panel 10, and the preparation of the light-emitting unit 410 does not require the use of a precision mask plate, which can reduce the development and use of precision masks and reduce the preparation cost. A light-transmitting opening 250 is provided on the isolation structure 200, which can improve the transmittance of the display panel 10. The substrate 100 includes a signal transmission layer 110 and a signal shielding layer 120, the signal shielding layer 120 includes a first signal line 121 and a light-transmitting shielding portion 122, and the signal shielding layer 120 is located on the side of the signal transmission layer 110 away from the substrate 100. The orthographic projection of the light-transmitting opening 250 on the substrate 100 and the orthographic projection of the light-transmitting shielding portion 122 on the substrate 100 at least partially overlap, that is, the light-transmitting shielding portion 122 covers at least a portion of the light-transmitting opening 250, so that the touch signal of the touch layer 300 is at least partially shielded by the light-transmitting shielding portion 122 after passing through the light-transmitting opening 250, so as to improve the problem of mutual influence between the touch signal of the touch layer 300 and the array signal of the substrate 100 through the light-transmitting opening 250, thereby improving the performance of the OLED display product.

[0066] When the first signal line 121 and the light-transmitting shielding portion 122 are arranged in the same layer, it is convenient for the first signal line 121 and the light-transmitting shielding portion 122 to be overlapped, so that the first signal line 121 and the light-transmitting shielding portion 122 share a potential, and the light-transmitting shielding portion 122 does not need to be connected to the potential in other additional ways. In addition, the first signal line 121 and the light-transmitting shielding portion 122 share a flat layer, which improves the problem of setting an additional flat layer between the first signal line 121 and the light-transmitting shielding portion 122 when the first signal line 121 and the light-transmitting shielding portion 122 are arranged in different layers, thereby reducing the manufacturing process of the display panel 10.

[0067] Optionally, the touch layer 300 includes a touch electrode, and the orthographic projection of the touch electrode on the substrate 100 does not overlap with the orthographic projection of the light-transmitting opening 250 on the substrate 100 , so as to avoid the touch electrode blocking the light-transmitting opening 250 and affecting the light transmission performance.

[0068] Optionally, the light-transmitting shielding portion 122 and the first signal line 121 are connected to each other, and the light-transmitting shielding portion 122 and the first signal line 121 are overlapped, so that the light-transmitting shielding portion 122 and the first signal line 121 have the same potential, thereby realizing the shielding function of the light-transmitting shielding portion 122 .

[0069] In some optional embodiments, there are multiple first signal lines 121 , the multiple first signal lines 121 are arranged side by side, adjacent first signal lines 121 are arranged at intervals to form a gap 123 , and the light-transmitting shielding portion 122 is located in the gap 123 .

[0070] In these optional embodiments, adjacent first signal lines 121 are spaced apart to form a gap 123, and the light-transmitting shielding portion 122 is disposed in the gap 123. There are first signal lines 121 on both sides of the light-transmitting shielding portion 122, which facilitates overlapping of the light-transmitting shielding portion 122 and the first signal line 121, so that the light-transmitting shielding portion 122 and the first signal line 121 are electrically connected and have the same potential.

[0071] Please also read Figures 1 to 4 , Figure 3 is a partial cross-sectional view of a display panel in another embodiment; Figure 4 FIG. 4 is a partial top view of a display panel in another embodiment.

[0072] like Figures 1 to 4 As shown, optionally, the light-transmitting shielding portion 122 is electrically connected to one or more first signal lines 121 adjacent to it, and the light-transmitting shielding portion 122 and two of its adjacent first signal lines 121 are overlapped, so that the first signal lines 121 on both sides are electrically connected to the light-transmitting shielding portion 122, thereby improving the problem of poor potential uniformity of the light-transmitting shielding portion 122 due to the voltage drop caused by the single-sided electrical connection of the light-transmitting shielding portion 122, improving the uniformity of the potential of the light-transmitting shielding portion 122, and thus improving the shielding effect of the light-transmitting shielding portion 122.

[0073] Please also read Figure 5 and Figure 6 , Figure 5 is a partial top view of a display panel in yet another embodiment; Figure 6 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0074] In some optional embodiments, such as Figure 5 As shown, a light-transmitting shielding portion 122 is disposed correspondingly to a light-transmitting opening 250, and / or, as shown Figure 6As shown, one light-transmitting shielding portion 122 is disposed correspondingly to a plurality of light-transmitting openings 250 .

[0075] One light-transmitting shielding portion 122 and one light-transmitting opening 250 are provided correspondingly, that is, the orthographic projection of one light-transmitting opening 250 on the substrate 100 is located within the orthographic projection of one light-transmitting shielding portion 122. One light-transmitting shielding portion 122 and multiple light-transmitting openings 250 are provided correspondingly, that is, the orthographic projections of multiple light-transmitting openings 250 on the substrate 100 are located within the orthographic projection of the same light-transmitting shielding portion 122.

[0076] In these optional embodiments, a light-transmitting shielding portion 122 and a light-transmitting opening 250 are correspondingly arranged, which can reduce the overall area of ​​the light-transmitting shielding portion 122 and reduce material costs. A light-transmitting shielding portion 122 and a plurality of light-transmitting openings 250 are correspondingly arranged, which can increase the overlapping area between the light-transmitting shielding portion 122 and the isolation structure 200, reduce the overlapping impedance, and improve the shielding effect of the light-transmitting shielding portion 122.

[0077] See also Figure 7 , Figure 7 is a partial cross-sectional view of a display panel in yet another embodiment.

[0078] like Figure 7 As shown, optionally, the orthographic projection of the light-transmitting shielding portion 122 on the substrate 100 at least partially overlaps with the orthographic projection of the first signal line 121 on the substrate 100, that is, the light-transmitting shielding portion 122 is arranged to cover at least a portion of the first signal line 121, thereby increasing the overlapping area between the light-transmitting shielding portion 122 and the first signal line 121, thereby reducing the contact resistance between the light-transmitting shielding portion 122 and the first signal line 121, so as to improve the shielding effect of the light-transmitting shielding portion 122.

[0079] Optionally, the orthographic projection of the first signal line 121 on the substrate 100 is located within the orthographic projection of the light-transmitting shielding part 122 on the substrate 100, that is, the first signal line 121 is completely covered by the light-transmitting shielding part 122, and the portion of the light-transmitting shielding part 122 located on the first signal line 121 does not need to be etched, which simplifies the preparation process and can further increase the contact area between the light-transmitting shielding part 122 and the first signal line 121, reduce the contact resistance between the light-transmitting shielding part 122 and the first signal line 121, and improve the shielding effect of the light-transmitting shielding part 122.

[0080] See also Figure 8 and Fig. 9 , Figure 8 is a partial cross-sectional view of a display panel in yet another embodiment; Fig. 9 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0081] like Figure 8 and Fig. 9As shown, in some optional embodiments, the light-transmitting shielding portion 122 encloses a first opening 124 , the signal shielding layer 120 further includes a second signal line 125 , the first signal line 121 and the second signal line 125 are located in the first opening 124 , and the second signal line 125 is spaced and insulated from the light-transmitting shielding portion 122 .

[0082] In these optional embodiments, the first opening 124 formed by the transparent shielding portion 122 is used to provide a certain space for setting the first signal line 121 and the second signal line 125. The first signal line 121 is located in the first opening 124, and the first signal line 121 is surrounded by the transparent shielding portion 122, which is convenient for the overlap of the first signal line 121 and the transparent shielding portion 122. The second signal line 125 is arranged in the first opening 124 to realize the signal transmission function. The second signal line 125 is spaced and insulated from the transparent shielding portion 122, so that the second signal line 125 and the first signal line 121 are difficult to be electrically connected to produce a short circuit, thereby improving the reliability of the first signal line 121 and the second signal line 125.

[0083] The second signal line 125 is optional, and both ends of the first signal line 121 are overlapped with the light-transmitting shielding part 122, so as to improve the problem that the light-transmitting shielding part 122 has poor potential uniformity due to the voltage drop after the light-transmitting shielding part 122 is electrically connected to the first signal line 121 on one side, thereby improving the uniformity of the potential of the light-transmitting shielding part 122 and thus improving the shielding effect of the light-transmitting shielding part 122.

[0084] Optionally, the orthographic projection of the light-transmitting opening 250 on the substrate 100 is located within the orthographic projection of the light-transmitting shielding portion 122 on the substrate 100 , so that the light-transmitting opening 250 is completely blocked by the light-transmitting shielding portion 122 , so that the touch signal of the touch layer 300 is shielded by the light-transmitting shielding portion 122 after passing through the light-transmitting opening 250 .

[0085] Optionally, the transparent shielding portion 122 and the first signal line 121 are made of different materials, and the first signal line 121 is made of a non-transparent conductive material. For example, the first signal line 121 is made of a metal conductive material with a low resistance, thereby reducing the power consumption of the display panel.

[0086] Optionally, the light-transmitting shielding portion 122 includes indium tin oxide (ITO) or indium zinc oxide (IZO). When the light-transmitting shielding portion 122 is ITO or IZO, it has good transmittance and can be electrically connected to the first signal line 121 .

[0087] Optionally, the first signal line 121 includes a power signal line or a reference signal line, and the second signal line 125 includes a data signal line.

[0088] In some optional embodiments, the display panel 10 also includes a light-emitting layer 400 and a first electrode layer 500, the light-emitting layer 400 is located on one side of the substrate 100, and the light-emitting layer 400 includes a light-emitting unit 410 located in the isolation opening 240; the first electrode layer 500 is located on the side of the light-emitting layer 400 away from the substrate 100, the first electrode layer 500 includes a first electrode 510 located in the isolation opening 240, and the first electrode 510 is electrically connected to the isolation structure 200.

[0089] In these optional embodiments, the isolation structure 200 separates the first electrode layer 500 to form mutually spaced first electrodes 510 , and the mutually spaced first electrodes 510 are electrically connected through the isolation structure 200 to form a whole-surface electrode, thereby ensuring normal light emission of the light-emitting unit 410 .

[0090] In some optional embodiments, the orthographic projection of each light emitting unit 410 on the substrate 100 is located within the orthographic projection of each first electrode 510 on the substrate 100 .

[0091] In these optional embodiments, the orthographic projection of the light-emitting unit 410 on the substrate 100 is located within the orthographic projection of the first electrode 510 on the substrate 100, that is, the first electrode 510 is arranged to cover the light-emitting unit 410 to serve as an electrode of the light-emitting unit 410, thereby ensuring normal light emission of the light-emitting unit 410 and improving the display effect of the display panel 10.

[0092] Optionally, the light-emitting unit 410 and the isolation structure 200 are spaced apart, that is, the light-emitting units 410 are spaced apart from each other, thereby reducing the crosstalk of carriers between the light-emitting units 410 and improving the cross-color problem of the light-emitting units 410.

[0093] In some optional embodiments, the isolation structure 200 includes a first conductive layer 210 and a second layer 220 located on a side of the first conductive layer 210 facing away from the substrate 100 , and the orthographic projection of the first conductive layer 210 on the substrate 100 is located within the orthographic projection of the second layer 220 on the substrate 100 .

[0094] In these optional embodiments, the first conductive layer 210 and the second layer 220 are arranged to form an isolation structure 200, the orthographic projection of the first conductive layer 210 arranged close to the substrate 100 on the substrate 100 is located within the orthographic projection of the second layer 220 on the substrate 100, the area of ​​the second layer 220 is larger than the area of ​​the first conductive layer 210, and the second layer 220 covers the surface of the first conductive layer 210 close to the second layer 220, and at this time, the first conductive layer 210 is recessed relative to the second layer 220 in a direction away from the isolation opening 240. When preparing the light-emitting layer 400, the light-emitting layer 400 has a large drop at the edge of the isolation structure 200, and the first conductive layer 210 is recessed relative to the second layer 220, and the light-emitting layer 400 is difficult to connect at the edge of the isolation structure 200, so it breaks, and the light-emitting layer 400 breaks to form mutually disconnected light-emitting units 410.

[0095] In some optional embodiments, the second layer 220 includes a conductive material or an insulating material.

[0096] In these optional embodiments, the second layer 220 includes a conductive material, for example, the second layer 220 includes a non-metallic conductive material or a metallic conductive material. When the second layer 220 is a non-metallic conductive material or an insulating material, the second layer 220 is difficult to be etched during wet etching of the first conductive layer 210 using an etching solution, so that the first conductive layer 210 is more easily concavely disposed relative to the second layer 220.

[0097] In some optional embodiments, the second layer 220 includes a metal material, and the first conductive layer 210 and the second layer 220 are made of different materials.

[0098] In these optional embodiments, when both the first conductive layer 210 and the second layer 220 are made of metal materials, the first conductive layer 210 may be wet-etched with an etching solution, and the etching solution may be set so that the etching rate of the second layer 220 is lower than the etching rate of the first conductive layer 210. Since the etching rate of the first conductive layer 210 is relatively high, when the etching solution is used for wet etching, even if the second layer 220 is etched to a certain extent, the first conductive layer 210 is etched faster, so that the first conductive layer 210 is set concave relative to the second layer 220.

[0099] See also Fig.10 , Fig.10 is a partial cross-sectional view of a display panel in yet another embodiment.

[0100] like Fig.10 As shown, in some optional embodiments, the isolation structure 200 further includes a third layer 230 located on the side of the first conductive layer 210 facing the substrate 100 , and the orthographic projection of the first conductive layer 210 on the substrate 100 is located within the orthographic projection of the third layer 230 on the substrate 100 .

[0101] In these optional embodiments, in order to obtain the first conductive layer 210 with a concave setting, the first conductive layer 210 has a faster etching rate relative to the second layer 220 and the third layer 230 during the etching process, thereby forming the concave first conductive layer 210. Since the etching rate of the first conductive layer 210 is relatively fast, the waste generated by etching is relatively large and easily enters other positions of the display panel 10, thereby causing adverse effects. After the third layer 230 is set, the first conductive layer 210 can be well attached to the third layer 230, and the generated etching waste falls on the third layer 230, which is easy to clean.

[0102] In some optional embodiments, the display panel 10 also includes a pixel definition layer 600, which is located on one side of the substrate 100. The pixel definition layer 600 includes a pixel defining portion 610 and a pixel opening 620 formed by the pixel defining portion 610. The pixel opening 620 is connected to the isolation opening 240, and the light-emitting unit 410 is located in the pixel opening 620.

[0103] In these optional embodiments, the pixel opening 620 formed by the pixel defining portion 610 is used to set the light-emitting unit 410 to achieve light-emitting display of the display panel 10. The pixel opening 620 is connected to the isolation opening 240 to reduce the shielding of the pixel opening 620 by the isolation structure 200, thereby ensuring the light-emitting effect of the light-emitting unit 410.

[0104] In some optional embodiments, the isolation structure 200 is located on a side of the pixel defining portion 610 facing away from the substrate 100 .

[0105] In these optional embodiments, the isolation structure 200 is disposed on the pixel defining portion 610, and the isolation structure 200 has a large height difference equivalent to the pixel opening 620. When preparing the light-emitting layer 400, due to the large height difference, the light-emitting layer 400 is more easily disconnected at the isolation structure 200, thereby reducing the difficulty of preparing the light-emitting layer 400.

[0106] like Fig.10 As shown, in some optional embodiments, a second opening 630 is opened on the pixel defining portion 610 , and the isolation structure 200 is located in the second opening 630 .

[0107] In these optional embodiments, the isolation structure 200 is disposed in the second opening 630 on the pixel defining portion 610. During the preparation process, the preparation step of the isolation structure 200 is performed before the preparation of the pixel electrode 640. That is, after the isolation structure 200 is prepared on the substrate 100, the pixel electrode 640 is prepared on the substrate 100, so as to reduce the impact of the preparation of the isolation structure 200 on the pixel electrode 640 and ensure that the pixel electrode 640 is not damaged.

[0108] Optionally, the display panel 10 further includes a pixel electrode 640 exposed by the pixel opening 620, and one of the pixel electrode 640 and the first electrode 510 serves as an anode of the light-emitting unit 410, and the other serves as a cathode of the light-emitting unit 410. In the embodiment of the present application, the pixel electrode 640 is used as the anode of the light-emitting unit 410, and the first electrode 510 is used as the cathode of the light-emitting unit 410 for illustration.

[0109] See also Fig.11 , Fig.11 is a partial cross-sectional view of a display panel in yet another embodiment.

[0110] like Fig.11 As shown, in some optional embodiments, the display panel 10 further includes an encapsulation layer 700 , and the encapsulation layer 700 is located on a side of the first electrode 510 facing away from the substrate 100 .

[0111] In these optional embodiments, the encapsulation layer 700 is disposed on the side of the first electrode 510 facing away from the substrate 100 to encapsulate the first electrode 510 and the light-emitting layer 400 , reduce the possibility of water and oxygen intrusion, and increase the service life of the display panel 10 .

[0112] In some optional embodiments, the encapsulation layer 700 includes a first sublayer 710 , and the first sublayer 710 is located on a side of the light emitting layer 400 facing away from the substrate 100 .

[0113] In these optional embodiments, the first sublayer 710 is disposed on the side of the first electrode 510 facing away from the substrate 100 to encapsulate the first electrode 510 and the light-emitting layer 400 , reduce the possibility of water and oxygen intrusion, and increase the service life of the display panel 10 .

[0114] Optionally, the first sublayer 710 includes a first sub-portion 711 , which is located in the isolation opening 240 and whose projection on the substrate 100 covers the light emitting unit 410 , so as to achieve a first packaging of the light emitting unit 410 and the first electrode 510 .

[0115] Optionally, the first sublayer 710 includes an inorganic material, which has good density and good barrier properties against water vapor and oxygen.

[0116] In some optional embodiments, the encapsulation layer 700 further includes a second sub-layer 720 , and the second sub-layer 720 is located on a side of the first sub-layer 710 facing away from the substrate 100 .

[0117] In these optional embodiments, the encapsulation layer 700 includes a first sub-layer 710 and a second sub-layer 720 , and multi-layer encapsulation is performed using the first sub-layer 710 and the second sub-layer 720 to further improve the encapsulation performance of the encapsulation layer 700 .

[0118] Optionally, the second sub-layer 720 includes a second sub-portion 721 , and part of the second sub-portion 721 is filled in the light-transmitting opening 250 to achieve planarization of the first opening.

[0119] Optionally, the second sublayer 720 includes an organic material, and the second sublayer 720 is encapsulated by the organic material to further improve the encapsulation performance of the encapsulation layer 700 .

[0120] Optionally, the encapsulation layer 700 further includes a third sublayer 730 , which is located on the side of the second sublayer 720 away from the substrate 100 . The encapsulation layer 700 adopts three-layer encapsulation, has better encapsulation performance, and reduces the possibility of water and oxygen intrusion.

[0121] Optionally, the third sublayer 730 includes inorganic materials, and the first sublayer 710 , the second sublayer 720 and the third sublayer 730 are respectively encapsulated with inorganic materials, organic materials and inorganic materials to form a TFE (Thin Film Encapsulation, TFE) thin film encapsulation structure to further improve the encapsulation performance of the encapsulation layer 700 .

[0122] Optionally, the light emitting layer 400 includes an electron injection layer (EIL), an electron transport layer (ETL), a light emitting material layer, a hole injection layer (HIL) and a hole transport layer (HTL).

[0123] The structural design in this embodiment can be applied to other display panels 10 , and the specific selection can be made according to actual conditions, and this application does not impose any specific restrictions on it.

[0124] The embodiment of the second aspect of the present application also provides a display device, including the display panel 10 of any of the above-mentioned first aspect embodiments. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel 10 of any of the above-mentioned first aspect embodiments, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel 10 of any of the above-mentioned first aspect embodiments, which will not be repeated here.

[0125] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0126] The third aspect of the present application also provides a method for preparing a display panel 10. The display panel 10 may be any of the display panels 10 provided in the first aspect of the present application. Figures 1 to 11 , and see Fig.12 , Fig.121 is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application. The preparation method comprises:

[0127] Step S01: preparing a substrate, the substrate comprising a signal transmission layer and a signal shielding layer, the signal shielding layer is located on a side of the signal transmission layer away from the substrate, and the signal shielding layer comprises a first signal line and a light-transmitting shielding portion.

[0128] Step S02: preparing an isolation structure on the substrate, the isolation structure enclosing an isolation opening and a light-transmitting opening, the isolation opening is used to set the light-emitting unit, and the orthographic projection of the light-transmitting opening on the substrate and the orthographic projection of the light-transmitting shielding portion on the substrate at least partially overlap.

[0129] Step S03: preparing a touch layer on the side of the signal shielding layer away from the signal transmission layer.

[0130] According to the preparation method of the third aspect of the present application, a substrate 100 is prepared by step S01, and the substrate 100 includes a signal transmission layer 110 and a signal shielding layer 120. Then, an isolation structure 200 is prepared by step S02. Finally, a touch layer 300 is prepared by step S03. The isolation structure 200 is arranged on the substrate 100 and encloses a plurality of isolation openings 240, which are used to separate the light-emitting layer 400 to form mutually disconnected light-emitting units 410, thereby reducing the crosstalk of carriers in the light-emitting layer 400, improving the display effect of the display panel 10, and preparing the light-emitting unit 410 does not require the use of a precision mask plate, which can reduce the development and use of precision masks and reduce the preparation cost. A light-transmitting opening 250 is provided on the isolation structure 200, which can improve the transmittance of the display panel 10. The signal shielding layer 120 includes a first signal line 121 and a light-transmitting shielding portion 122, and the signal shielding layer 120 is located on the side of the signal transmission layer 110 away from the substrate 100. The orthographic projection of the light-transmitting opening 250 on the substrate 100 and the orthographic projection of the light-transmitting shielding portion 122 on the substrate 100 at least partially overlap, that is, the light-transmitting shielding portion 122 covers at least a portion of the light-transmitting opening 250, so that the touch signal of the touch layer 300 is at least partially shielded by the light-transmitting shielding portion 122 after passing through the light-transmitting opening 250, so as to improve the problem of mutual influence between the touch signal of the touch layer 300 and the array signal of the substrate 100 through the light-transmitting opening 250, thereby improving the performance of the OLED display product.

[0131] According to the embodiments described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: The display panel further includes: A substrate, comprising a signal transmission layer and a signal shielding layer, wherein the signal shielding layer is located on a side of the signal transmission layer away from the substrate, and the signal shielding layer comprises a first signal line and a light-transmitting shielding portion; an isolation structure, located on one side of the substrate, the isolation structure encloses an isolation opening and a light-transmitting opening, the isolation opening is used to set a light-emitting unit, and the orthographic projection of the light-transmitting opening on the substrate and the orthographic projection of the light-transmitting shielding portion on the substrate at least partially overlap; The touch layer is located on a side of the signal shielding layer away from the signal transmission layer.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the light-transmitting opening on the substrate is located within the orthographic projection of the light-transmitting shielding portion on the substrate; And / or, the light-transmitting shielding portion and the first signal line are connected to each other.

3. The display panel according to claim 1, characterized in that: There are a plurality of first signal lines, the plurality of first signal lines are arranged side by side, adjacent first signal lines are arranged at intervals to form a gap, and the light-transmitting shielding portion is located in the gap; Preferably, the light-transmitting shielding portion is electrically connected to one or more first signal lines adjacent thereto; Preferably, one of the light-transmitting shielding portions is arranged correspondingly to one of the light-transmitting openings, and / or one of the light-transmitting shielding portions is arranged correspondingly to a plurality of the light-transmitting openings.

4. The display panel according to claim 1, characterized in that: The orthographic projection of the light-transmitting shielding portion on the substrate at least partially overlaps with the orthographic projection of the first signal line on the substrate; Preferably, the orthographic projection of the first signal line on the substrate is located within the orthographic projection of the light-transmitting shielding portion on the substrate.

5. The display panel according to claim 1, characterized in that: The light-transmitting shielding portion encloses a first opening, the signal shielding layer further comprises a second signal line, the first signal line and the second signal line are located in the first opening, and the second signal line is insulated from the light-transmitting shielding portion and the first signal line; Preferably, both ends of the first signal line are overlapped with the light-transmitting shielding portion; Preferably, the second signal line includes a data signal line.

6. The display panel according to claim 1, characterized in that: The light-transmitting shielding portion and the first signal line are made of different materials, and the first signal line is made of a non-light-transmitting conductive material; Preferably, the light-transmitting shielding portion comprises indium tin oxide or indium zinc oxide; Preferably, the first signal line includes: a power signal line and / or a reference signal line.

7. The display panel according to claim 1, characterized in that: The display panel further includes: A light-emitting layer, located on one side of the substrate, wherein the light-emitting layer includes the light-emitting unit located in the isolation opening; A first electrode layer, located on a side of the light-emitting layer away from the substrate, the first electrode layer comprising a first electrode located in the isolation opening, the first electrode being electrically connected to the isolation structure; Preferably, the orthographic projection of each of the light-emitting units on the substrate is located within the orthographic projection of each of the first electrodes on the substrate; Preferably, the light emitting unit and the isolation structure are spaced apart; Preferably, the isolation structure comprises a first conductive layer and a second layer located on a side of the first conductive layer away from the substrate, and an orthographic projection of the first conductive layer on the substrate is located within an orthographic projection of the second layer on the substrate; Preferably, the second layer comprises a conductive material or an insulating material; Preferably, the second layer comprises a metal material, and the first conductive layer and the second layer are made of different materials; Preferably, the isolation structure further comprises a third layer located on a side of the first conductive layer facing the substrate, and an orthographic projection of the first conductive layer on the substrate is located within an orthographic projection of the third layer on the substrate.

8. The display panel according to claim 1, characterized in that: The display panel further includes: A pixel definition layer, located at one side of the substrate, the pixel definition layer comprising a pixel definition portion and a pixel opening formed by the pixel definition portion, the pixel opening is connected to the isolation opening, and the light emitting unit is located at the pixel opening; Preferably, the isolation structure is located on a side of the pixel defining portion away from the substrate; Preferably, a second opening is formed on the pixel defining portion, and the isolation structure is located at the second opening; Preferably, the display panel further includes a pixel electrode, and the pixel electrode is exposed from the pixel opening.

9. A display device, characterized in that: A display panel comprising any one of claims 1 to 8.

10. A method for preparing a display panel, characterized in that: include: Prepare a substrate, the substrate comprising a signal transmission layer and a signal shielding layer, the signal shielding layer is located on a side of the signal transmission layer away from the substrate, the signal shielding layer comprises a first signal line and a light-transmitting shielding portion; An isolation structure is prepared on the substrate, wherein the isolation structure encloses an isolation opening and a light-transmitting opening, wherein the isolation opening is used to set a light-emitting unit, and an orthographic projection of the light-transmitting opening on the substrate and an orthographic projection of the light-transmitting shielding portion on the substrate at least partially overlap; A touch layer is prepared on a side of the signal shielding layer away from the signal transmission layer.

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