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, a light-emitting layer, a light-transmitting shielding layer and a touch layer. The isolation structures are arranged on the substrate and enclose to form the multiple isolation openings, so that the light-emitting layer is separated to form the light-emitting units which are disconnected with one another, development and use of the precise mask plate can be reduced, and the preparation cost is reduced. The isolation structure is provided with the light-transmitting opening, so that the transmittance of the display panel can be improved. The light-transmitting shielding layer comprises a light-transmitting shielding part, and the orthographic projection of the light-transmitting opening on the substrate is located in the orthographic projection of the light-transmitting shielding part on the substrate, so that the problem that a touch signal of the touch layer and an array signal of the substrate influence each other through the light-transmitting opening is solved, and 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; an isolation structure located on one side of the substrate, the isolation structure enclosing an isolation opening and a light-transmitting opening; a light-emitting layer located on one side of the substrate, the light-emitting layer including a light-emitting unit located at the isolation opening; a light-transmitting shielding layer located on a side of the isolation structure away from the substrate, the light-transmitting shielding layer including a light-transmitting shielding portion, an orthographic projection of the light-transmitting opening on the substrate being located within an orthographic projection of the light-transmitting shielding portion on the substrate; and a touch layer located on a side of the light-transmitting shielding layer away from the substrate.

[0006] According to an implementation of the first aspect of the present application, the display panel further includes a transparent filling portion disposed in the light-transmitting opening, and the light-transmitting shielding layer is located on a side of the transparent filling portion facing away from the substrate.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the distance between the surface of the transparent filling portion facing away from the substrate and the substrate is a first distance, the distance between the surface of the isolation structure facing away from the substrate and the substrate is a second distance, and the first distance is less than or equal to the second distance.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the transparent filling part includes a transparent organic material.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes: a first electrode layer, located on the side of the light-emitting layer away from the substrate, the first electrode layer includes a first electrode located in the isolation opening, the first electrode is electrically connected to the isolation structure, and the light-transmitting shielding portion is electrically connected to the isolation structure.

[0010] 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.

[0011] 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.

[0012] 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 conductive layer, the second conductive layer is located on the side of the first conductive layer away from the substrate, the light-transmitting shielding portion is electrically connected to the second conductive layer, and the first electrode is electrically connected to the first conductive layer.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the edge of the light-transmitting shielding portion extends to the side of the second conductive layer facing away from the substrate, and contacts the side of the second conductive layer facing away from the substrate.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the first conductive layer on the substrate is located within the orthographic projection of the second conductive layer on the substrate.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the second conductive layer includes a metal material, and the materials of the first conductive layer and the second conductive layer are different.

[0016] 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.

[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 embodiments of the first aspect of the present application, the orthographic projection of the isolation structure on the substrate at least partially overlaps with the orthographic projection of the light-transmitting shielding portion on the substrate.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, an orthographic projection of the second conductive layer on the substrate at least partially overlaps with an orthographic projection of the light-transmitting shielding portion on the substrate.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the second conductive layer of the isolation structure located on the peripheral side of the light-transmitting opening on the substrate overlaps with the orthographic projection of the light-transmitting shielding portion on the substrate.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, a light-transmitting shielding portion is arranged corresponding to a light-transmitting opening, and / or a light-transmitting shielding portion is arranged corresponding to a plurality of light-transmitting openings.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the light-transmitting opening is arranged between two adjacent isolation openings, or the orthographic projection of the isolation structure on the substrate is in a grid shape and has grid intersection positions, and the light-transmitting opening is arranged at the grid intersection positions.

[0023] 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 the substrate, the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate, and the light-emitting unit is located at the pixel opening.

[0024] 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.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, a receiving opening is provided on the pixel defining portion, and the isolation structure is located in the receiving opening.

[0026] 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.

[0027] 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.

[0028] An embodiment of a third aspect of the present application provides a method for preparing a display panel, including:

[0029] An isolation structure is prepared on the substrate, wherein the isolation structure encloses an isolation opening and a light-transmitting opening;

[0030] A light-transmitting shielding layer is prepared on the substrate, wherein the light-transmitting shielding layer comprises a light-transmitting shielding portion, and 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;

[0031] A light-emitting layer is prepared on a side of the light-transmitting shielding layer facing away from the substrate, wherein the light-emitting layer includes light-emitting units located in the isolation openings;

[0032] A touch control layer is prepared on the side of the light emitting layer facing away from the substrate.

[0033] According to the display panel of the embodiment of the present application, the display panel includes a substrate, an isolation structure, a light-emitting layer, a light-transmitting shielding layer and a touch layer. The isolation structure is arranged on the substrate and encloses a plurality of isolation openings to separate the light-emitting layer to form mutually disconnected light-emitting units, thereby reducing the crosstalk of carriers in the light-emitting layer and improving the display effect of the display panel. In addition, the light-emitting units do not need to use a precision mask plate, which can reduce the development and use of precision masks and reduce the preparation cost. A light-transmitting opening is provided on the isolation structure, which can improve the transmittance of the display panel. The light-transmitting shielding layer includes a light-transmitting shielding portion, and 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, that is, the light-transmitting shielding portion covers the light-transmitting opening, so that the touch signal and the array signal are difficult to pass 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

[0034] 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.

[0035] Figure 1 is a cross-sectional schematic diagram of a display panel provided in an embodiment of the present application;

[0036] Figure 2 is a partial cross-sectional view of a display panel in another embodiment;

[0037] Figure 3 is a schematic top view of a display panel provided in an embodiment of the present application;

[0038] Figure 4 is a partial top view of a display panel in another embodiment;

[0039] Figure 5 is a partial top view of a display panel in yet another embodiment;

[0040] Figure 6 is a partial cross-sectional view of a display panel in yet another embodiment;

[0041] Figure 7 is a partial cross-sectional view of a display panel in yet another embodiment;

[0042] Figure 8 It is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0043] Description of reference numerals:

[0044] 10. Display panel;

[0045] 100. Substrate;

[0046] 200, isolation structure; 210, first conductive layer; 220, second conductive layer; 230, third layer; 240, isolation opening; 250, light-transmitting opening;

[0047] 300, light-emitting layer; 310, light-emitting unit;

[0048] 400, light-transmitting shielding layer; 410, light-transmitting shielding portion;

[0049] 500, touch layer;

[0050] 600, transparent filling portion;

[0051] 700, first electrode layer; 710, first electrode;

[0052] 800, pixel definition layer; 810, pixel defining portion; 820, pixel opening; 830, receiving opening; 840, pixel electrode;

[0053] 900, encapsulation layer; 910, first sublayer; 920, second sublayer; 930, third sublayer;

[0054] D1, first distance; D2, second distance. DETAILED DESCRIPTION

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0060] See also Figure 1 , Figure 1 It is a cross-sectional schematic diagram of a display panel provided in an embodiment of the present application.

[0061] like Figure 1 As shown, the first embodiment of the present application provides a display panel 10, which includes a substrate 100, an isolation structure 200, a light-emitting layer 300, a light-transmitting shielding layer 400 and a touch layer 500; 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 light-emitting layer 300 is located on one side of the substrate 100, and the light-emitting layer 300 includes a light-emitting unit 310 located at the isolation opening 240; the light-transmitting shielding layer 400 is located on the side of the isolation structure 200 away from the substrate 100, the light-transmitting shielding layer 400 includes a light-transmitting shielding portion 410, and 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 410 on the substrate 100; the touch layer 500 is located on the side of the light-transmitting shielding layer 400 away from the substrate 100.

[0062] 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, a light-emitting layer 300, a light-transmitting shielding layer 400 and a touch layer 500. The isolation structure 200 is arranged on the substrate 100 and encloses a plurality of isolation openings 240 to separate the light-emitting layer 300 to form mutually disconnected light-emitting units 310, thereby reducing the crosstalk of carriers in the light-emitting layer 300, improving the display effect of the display panel 10, and the preparation of the light-emitting unit 310 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 light-transmitting shielding layer 400 includes a light-transmitting shielding portion 410, and 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 410 on the substrate 100, that is, the light-transmitting shielding portion 410 covers the light-transmitting opening 250, making it difficult for the touch signal and the array signal to pass through the light-transmitting opening 250, so as to improve the problem of the touch signal of the touch layer 500 and the array signal of the substrate 100 influencing each other through the light-transmitting opening 250, thereby improving the performance of the OLED display product.

[0063] There are many ways to set the substrate 100. For example, the substrate 100 may include a substrate and an array substrate arranged on the substrate. Alternatively, the substrate 100 is the substrate. Alternatively, the substrate 100 includes a buffer layer and a support plate on a side away from the substrate.

[0064] In some optional embodiments, the orthographic projection of the touch layer 500 on the substrate 100 overlaps with the orthographic projection of the isolation structure 200 on the substrate 100, while the orthographic projection of the touch layer 500 on the substrate 100 does not overlap with the orthographic projection of the light-transmitting opening 250 on the substrate 100, thereby preventing the touch electrode of the touch layer 500 from blocking the light-transmitting opening 250 and affecting the light-transmitting effect.

[0065] In some optional embodiments, the display panel 10 further includes a transparent filling portion 600 disposed in the light-transmitting opening 250 , and the light-transmitting shielding layer 400 is located on a side of the transparent filling portion 600 facing away from the substrate 100 .

[0066] In these optional embodiments, the transparent filling part 600 fills the light-transmitting opening 250 to improve the problem of disconnection of the light-transmitting shielding part 410 due to the deep light-transmitting opening 250 when preparing the light-transmitting shielding part 410 .

[0067] Optionally, the transparent filling portion 600 includes OCA (Optically Clear Adhesive, OCA) optical glue.

[0068] In some optional embodiments, the distance between the surface of the transparent filling portion 600 facing away from the substrate 100 and the substrate 100 is a first distance D1, the distance between the surface of the isolation structure 200 facing away from the substrate 100 and the substrate 100 is a second distance D2, and the first distance D1 is less than or equal to the second distance D2.

[0069] In these optional embodiments, the first distance D1 is less than or equal to the second distance D2, that is, the surface of the transparent filling portion 600 facing away from the substrate 100 is flush with the surface of the isolation structure 200 facing away from the substrate 100, or the surface of the transparent filling portion 600 facing away from the substrate 100 is lower than the surface of the isolation structure 200 facing away from the substrate 100 and is flush, so that the light-transmitting opening 250 is flattened and can be continuously formed on the transparent filling portion 600, further reducing the risk of breaking of the light-transmitting shielding portion 410 at the light-transmitting opening 250.

[0070] Optionally, the transparent filling part 600 includes a transparent organic material.

[0071] See also Figure 2 , Figure 2 is a partial cross-sectional view of a display panel in another embodiment.

[0072] like Figure 2 As shown, in some optional embodiments, the display panel 10 also includes a first electrode layer 700, the first electrode layer 700 is located on the side of the light-emitting layer 300 away from the substrate 100, the first electrode layer 700 includes a first electrode 710 located in the isolation opening 240, the first electrode 710 is electrically connected to the isolation structure 200, and the light-transmitting shielding portion 410 is electrically connected to the isolation structure 200.

[0073] In these optional embodiments, the isolation structure 200 separates the first electrode layer 700 to form mutually spaced first electrodes 710, and the mutually spaced first electrodes 710 are electrically connected through the isolation structure 200 to form a whole-surface electrode, thereby ensuring the normal light emission of the light-emitting unit 310. The light-transmitting shielding portion 410 connects the isolation structure 200 around the light-transmitting opening 250, increases the electrical conduction area of ​​the whole-surface electrode, reduces the overall impedance, and thus reduces the power consumption of the display panel 10. The light-transmitting shielding portion 410 is electrically connected to the isolation structure 200, that is, the light-transmitting shielding portion 410 is electrically connected to the first electrode 710, so that the light-transmitting shielding portion 410 and the first electrode 710 have the same potential, thereby realizing the shielding function of the light-transmitting shielding layer 400.

[0074] In some optional embodiments, the orthographic projection of each light emitting unit 310 on the substrate 100 is located within the orthographic projection of each first electrode 710 on the substrate 100 .

[0075] In these optional embodiments, the orthographic projection of the light-emitting unit 310 on the substrate 100 is located within the orthographic projection of the first electrode 710 on the substrate 100, that is, the first electrode 710 is arranged to cover the light-emitting unit 310 to serve as an electrode of the light-emitting unit 310, thereby ensuring normal light emission of the light-emitting unit 310 and improving the display effect of the display panel 10.

[0076] Optionally, the light-emitting unit 310 and the isolation structure 200 are spaced apart, and the light-emitting layer 300 and the isolation structure 200 are spaced apart, that is, the light-emitting units 310 are spaced apart from each other, thereby reducing the crosstalk of carriers between the light-emitting units 310 and improving the color crosstalk problem of the light-emitting units 310.

[0077] In some optional embodiments, the isolation structure 200 includes a first conductive layer 210 and a second conductive layer 220, the second conductive layer 220 is located on the side of the first conductive layer 210 away from the substrate 100, the light-transmitting shielding portion 410 is electrically connected to the second conductive layer 220, and the first electrode 710 is electrically connected to the first conductive layer 210.

[0078] In these optional embodiments, the first conductive layer 210 and the second conductive layer 220 are arranged to form the isolation structure 200, and the light-transmitting shielding portion 410 overlaps with the second conductive layer 220 to achieve electrical conduction between the light-transmitting shielding portion 410 and the first electrode 710. The first electrode 710 overlaps with the first conductive layer 210 to achieve interconnection between the first electrodes 710 through the first conductive layer 210.

[0079] In some optional embodiments, the edge of the transparent shielding part 410 extends to the side of the second conductive layer 220 away from the substrate 100 and contacts the side of the second conductive layer 220 away from the substrate 100. Further, the transparent shielding part 410 and the first electrode 710 can be electrically connected.

[0080] In some optional embodiments, the orthographic projection of the first conductive layer 210 on the substrate 100 is located within the orthographic projection of the second conductive layer 220 on the substrate 100 .

[0081] In these optional embodiments, the orthographic projection of the first conductive layer 210 disposed near the substrate 100 on the substrate 100 is located within the orthographic projection of the second conductive layer 220 on the substrate 100, the area of ​​the second conductive layer 220 is larger than the area of ​​the first conductive layer 210, and the second conductive layer 220 covers the surface of the first conductive layer 210 near the second conductive layer 220. At this time, the first conductive layer 210 is recessed relative to the second conductive layer 220 in a direction away from the isolation opening 240. When preparing the light-emitting layer 300, the light-emitting layer 300 has a large drop at the edge of the isolation structure 200, and the first conductive layer 210 is recessed relative to the second conductive layer 220. The light-emitting layer 300 is difficult to connect at the edge of the isolation structure 200, and thus breaks, and the light-emitting layer 300 breaks to form mutually disconnected light-emitting units 310.

[0082] In some optional embodiments, the second conductive layer 220 includes a metal material, and the first conductive layer 210 and the second conductive layer 220 are made of different materials.

[0083] In these optional embodiments, when both the first conductive layer 210 and the second conductive layer 220 are made of metal materials, an etching solution may be used to wet-etch the first conductive layer 210. By setting the etching solution, the etching rate of the second conductive layer 220 can be made 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 conductive layer 220 is etched to a certain extent, the first conductive layer 210 is etched faster, so that the first conductive layer 210 is concavely arranged relative to the second conductive layer 220.

[0084] 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 .

[0085] 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 conductive 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 faster, the waste generated by etching is more likely to enter 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.

[0086] Optionally, the light-transmitting shielding portion 410 includes indium tin oxide (ITO) or indium zinc oxide (IZO). When the light-transmitting shielding portion 410 is ITO or IZO, it has good transmittance and can be electrically connected to the isolation structure 200 .

[0087] In some optional embodiments, the orthographic projection of the isolation structure 200 on the substrate 100 at least partially overlaps with the orthographic projection of the light-transmitting shielding portion 410 on the substrate 100 .

[0088] In these optional embodiments, the isolation structure 200 at least partially overlaps with the light-transmitting shielding portion 410, so that the isolation structure 200 and the light-transmitting shielding portion 410 can be well overlapped, and the overlapping area between the isolation structure 200 and the light-transmitting shielding portion 410 is large, which can reduce the overlapping impedance of the isolation structure 200 and the light-transmitting shielding portion 410 and improve the shielding effect of the light-transmitting shielding portion 410.

[0089] In some optional embodiments, an orthographic projection of the second conductive layer 220 on the substrate 100 at least partially overlaps with an orthographic projection of the light-transmitting shielding portion 410 on the substrate 100 .

[0090] In these optional embodiments, the second conductive layer 220 at least partially overlaps with the light-transmitting shielding portion 410, so that the second conductive layer 220 and the light-transmitting shielding portion 410 can be well overlapped, and the overlapping area between the second conductive layer 220 and the light-transmitting shielding portion 410 is large, which can reduce the overlapping impedance between the second conductive layer 220 and the light-transmitting shielding portion 410 and improve the shielding effect of the light-transmitting shielding portion 410.

[0091] Optionally, the orthographic projection of the second conductive layer 220 of the isolation structure 200 located on the peripheral side of the light-transmitting opening 250 on the substrate 100 overlaps with the orthographic projection of the light-transmitting shielding portion 410 on the substrate 100, which can further increase the overlapping area between the light-transmitting shielding portion 410 and the second conductive layer 220, improve the overlapping effect of the light-transmitting shielding portion 410 and the second conductive layer 220, and reduce the overlapping impedance between the second conductive layer 220 and the light-transmitting shielding portion 410, thereby improving the shielding effect of the light-transmitting shielding portion 410.

[0092] Please also read Figure 3 and Figure 4 , Figure 3 is a schematic top view of a display panel provided in an embodiment of the present application; Figure 4 FIG. 4 is a partial top view of a display panel in another embodiment.

[0093] In some optional embodiments, such as Figure 3 As shown, a light-transmitting shielding portion 410 is disposed corresponding to a light-transmitting opening 250, and / or, as shown Figure 4 As shown, one light-transmitting shielding portion 410 is disposed corresponding to a plurality of light-transmitting openings 250 .

[0094] One light-transmitting shielding portion 410 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 410. One light-transmitting shielding portion 410 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 410.

[0095] In these optional embodiments, a light-transmitting shielding portion 410 and a light-transmitting opening 250 are correspondingly arranged, which can reduce the overall area of ​​the light-transmitting shielding portion 410 and reduce material costs. A light-transmitting shielding portion 410 and a plurality of light-transmitting openings 250 are correspondingly arranged, which can increase the overlapping area between the light-transmitting shielding portion 410 and the isolation structure 200, reduce the overlapping impedance, and improve the shielding effect of the light-transmitting shielding portion 410.

[0096] See also Figure 5 , Figure 5 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0097] Optional, such as Figure 3 and Figure 4 As shown, the light-transmitting opening 250 is disposed between two adjacent isolation openings 240, or, as shown in FIG. Figure 5 As shown, the orthographic projection of the isolation structure 200 on the substrate 100 is in a grid shape and has grid intersection positions, and the light-transmitting openings 250 are arranged at the grid intersection positions. At the grid intersection positions, the orthographic projection of the isolation structure 200 on the substrate 100 has a larger area, which is convenient for preparing the light-transmitting openings 250, and a larger light-transmitting opening 250 can be prepared at the grid intersection positions, thereby increasing the area of ​​the display panel 10 with high transmittance.

[0098] In some optional embodiments, the display panel 10 also includes a pixel definition layer 800, which is located on the substrate 100. The pixel definition layer 800 includes a pixel defining portion 810 and a pixel opening 820 formed by the pixel defining portion 810. The orthographic projection of the pixel opening 820 on the substrate 100 is located within the orthographic projection of the isolation opening 240 on the substrate 100, and the light-emitting unit 310 is located at the pixel opening 820.

[0099] In these optional embodiments, the pixel opening 820 formed by the pixel defining portion 810 is used to set the light-emitting unit 310 to achieve light-emitting display of the display panel 10. The orthographic projection of the pixel opening 820 on the substrate 100 is located within the orthographic projection of the isolation opening 240 on the substrate 100, that is, the pixel opening 820 is completely exposed by the isolation opening 240, reducing the shielding of the pixel opening 820 by the isolation structure 200, and ensuring the light-emitting effect of the light-emitting unit 310.

[0100] In some optional embodiments, the isolation structure 200 is located on a side of the pixel defining portion 810 facing away from the substrate 100 .

[0101] In these optional embodiments, the isolation structure 200 is disposed on the pixel defining portion 810, and the isolation structure 200 has a large height difference equivalent to the pixel opening 820. When preparing the light-emitting layer 300, due to the large height difference, the light-emitting layer 300 is more easily disconnected at the isolation structure 200, thereby reducing the difficulty of preparing the light-emitting layer 300.

[0102] See also Figure 6 , Figure 6 is a partial cross-sectional view of a display panel in yet another embodiment.

[0103] like Figure 6 As shown, in some optional embodiments, a receiving opening 830 is opened on the pixel defining portion 810 , and the isolation structure 200 is located in the receiving opening 830 .

[0104] In these optional embodiments, the isolation structure 200 is disposed in the accommodating opening 830 on the pixel defining portion 810. During the preparation process, the preparation step of the isolation structure 200 is performed before the preparation of the pixel electrode 840. That is, after the isolation structure 200 is prepared on the substrate 100, the pixel electrode 840 is prepared on the substrate 100, so as to reduce the impact of the preparation of the isolation structure 200 on the pixel electrode 840 and ensure that the pixel electrode 840 is not damaged.

[0105] In some optional embodiments, the display panel 10 further includes a pixel electrode 840 , and the pixel electrode 840 is exposed by the pixel opening 820 .

[0106] Optionally, the display panel 10 further includes a pixel electrode 840 exposed by the pixel opening 820, and one of the pixel electrode 840 and the first electrode 710 serves as an anode of the light-emitting unit 310, and the other serves as a cathode of the light-emitting unit 310. In the embodiment of the present application, the pixel electrode 840 is used as the anode of the light-emitting unit 310, and the first electrode 710 is used as the cathode of the light-emitting unit 310 for illustration.

[0107] See also Figure 7 , Figure 7 is a partial cross-sectional view of a display panel in yet another embodiment.

[0108] like Figure 7 As shown, in some optional embodiments, the display panel 10 further includes an encapsulation layer 900 , which is located on a side of the first electrode layer 700 away from the substrate 100 , and the touch layer 500 is located on a side of the encapsulation layer 900 away from the substrate 100 .

[0109] In these optional embodiments, the encapsulation layer 900 is disposed on the side of the first electrode layer 700 facing away from the substrate 100 to encapsulate the first electrode layer 700 and the light-emitting layer 300 , reduce the possibility of water and oxygen intrusion, and increase the service life of the display panel 10 .

[0110] In some optional embodiments, the encapsulation layer 900 includes a first sub-layer 910 , and the first sub-layer 910 is located on a side of the light emitting unit 310 facing away from the substrate 100 .

[0111] In these optional embodiments, the first sublayer 910 is disposed on the side of the first electrode layer 700 facing away from the substrate 100 to encapsulate the first electrode layer 700 and the light-emitting layer 300 , reduce the possibility of water and oxygen intrusion, and increase the service life of the display panel 10 .

[0112] Optionally, the first sublayer 910 includes an inorganic material. The inorganic material has good density and good barrier properties against water vapor and oxygen.

[0113] In some optional embodiments, the encapsulation layer 900 further includes a second sub-layer 920 , and the second sub-layer 920 is located on a side of the first sub-layer 910 facing away from the substrate 100 .

[0114] In these optional embodiments, the encapsulation layer 900 includes a first sub-layer 910 and a second sub-layer 920 , and multi-layer encapsulation is performed using the first sub-layer 910 and the second sub-layer 920 to further improve the encapsulation performance of the encapsulation layer 900 .

[0115] Optionally, the second sublayer 920 includes an organic material, and the second sublayer 920 is encapsulated by the organic material to further improve the encapsulation performance of the encapsulation layer 900 .

[0116] Optionally, the encapsulation layer 900 further includes a third sublayer 930 , which is located on the side of the second sublayer 920 away from the substrate 100 . The encapsulation layer 900 adopts three-layer encapsulation, has better encapsulation performance, and reduces the possibility of water and oxygen intrusion.

[0117] Optionally, the third sublayer 930 includes inorganic materials, and the first sublayer 910, the second sublayer 920 and the third sublayer 930 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 900.

[0118] Optionally, the light emitting layer 300 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).

[0119] 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.

[0120] 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.

[0121] 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.

[0122] The third aspect of the present application also provides a method for preparing a display panel 10. The display panel 10 may be the display panel 10 provided by any of the first aspect embodiments described above. Figures 1 to 7 , and see Figure 8 , Figure 8 1 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:

[0123] Step S01: preparing an isolation structure on a substrate, wherein the isolation structure encloses an isolation opening and a light-transmitting opening.

[0124] Step S02: preparing a light-transmitting shielding layer on the substrate, wherein the light-transmitting shielding layer comprises a light-transmitting shielding portion, and an 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.

[0125] Step S03: preparing a light-emitting layer on the side of the light-transmitting shielding layer facing away from the substrate, wherein the light-emitting layer includes light-emitting units located in the isolation openings.

[0126] Step S04: preparing a touch layer on the side of the light-emitting layer facing away from the substrate.

[0127] According to the preparation method of the third aspect of the present application, an isolation structure 200 is prepared on the substrate 100 through step S01, and the isolation structure 200 encloses an isolation opening 240 and a light-transmitting opening 250. Then, a light-transmitting shielding layer 400 is prepared on the substrate 100 through step S02. A light-emitting layer 300 is prepared on the side of the light-transmitting shielding layer 400 away from the substrate 100 through step S03. Finally, a touch layer 500 is prepared on the side of the light-emitting layer 300 away from the substrate 100 through step S04. The isolation structure 200 is arranged on the substrate 100 and encloses a plurality of isolation openings 240 to separate the light-emitting layer 300 to form mutually disconnected light-emitting units 310, thereby reducing the crosstalk of carriers in the light-emitting layer 300, improving the display effect of the display panel 10, and the preparation of the light-emitting unit 310 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. The isolation structure 200 is provided with a light-transmitting opening 250, which can improve the transmittance of the display panel 10. The light-transmitting shielding layer 400 includes a light-transmitting shielding portion 410, and 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 410 on the substrate 100, that is, the light-transmitting shielding portion 410 covers the light-transmitting opening 250, so that the touch signal and the array signal are difficult to pass through the light-transmitting opening 250, so as to improve the problem of the touch signal of the touch layer 500 and the array signal of the substrate 100 affecting each other through the light-transmitting opening 250, thereby improving the performance of the OLED display product.

[0128] In some optional embodiments, before step S03, the method further includes:

[0129] A pixel definition material layer is prepared on the substrate 100 .

[0130] After step S02, the method further includes:

[0131] The pixel defining material layer is patterned to obtain a pixel definition layer 800, which includes a pixel defining portion 810 and a pixel opening 820 enclosed by the pixel defining portion 810, the orthographic projection of the pixel opening 820 on the substrate 100 is located within the orthographic projection of the isolation opening 240 on the substrate 100, and the light-emitting unit 310 is located in the pixel opening 820.

[0132] In these optional embodiments, after the step of preparing the light-transmitting shielding layer 400 , the light-transmitting shielding layer 400 covers the light-transmitting opening 250 , and the pixel-defining material layer can be etched using a normal mask to form the pixel opening 820 , thereby simplifying the preparation process of the display panel 10 .

[0133] 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: substrate; An isolation structure, located on one side of the substrate, the isolation structure encloses an isolation opening and a light-transmitting opening; A light-emitting layer, located on one side of the substrate, wherein the light-emitting layer includes a light-emitting unit located in the isolation opening; a light-transmitting shielding layer, located on a side of the isolation structure away from the substrate, the light-transmitting shielding layer comprising a light-transmitting shielding portion, the orthographic projection of the light-transmitting opening on the substrate being located within the orthographic projection of the light-transmitting shielding portion on the substrate; The touch control layer is located on a side of the light-transmitting shielding layer away from the substrate.

2. The display panel according to claim 1, characterized in that: The display panel further comprises a transparent filling portion, which is arranged in the light-transmitting opening, and the light-transmitting shielding layer is located on a side of the transparent filling portion away from the substrate; Preferably, the distance between the surface of the transparent filling portion facing away from the substrate and the substrate is a first distance, the distance between the surface of the isolation structure facing away from the substrate and the substrate is a second distance, and the first distance is less than or equal to the second distance; Preferably, the transparent filling portion comprises a transparent organic material.

3. The display panel according to claim 1, characterized in that: The display panel further includes: A first electrode layer is located on a side of the light-emitting layer away from the substrate, the first electrode layer comprises a first electrode located in the isolation opening, the first electrode is electrically connected to the isolation structure, and the light-transmitting shielding portion is 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 from each other.

4. The display panel according to claim 3, characterized in that: The isolation structure comprises a first conductive layer and a second conductive layer, the second conductive layer is located on a side of the first conductive layer away from the substrate, the light-transmitting shielding portion is electrically connected to the second conductive layer, and the first electrode is electrically connected to the first conductive layer; Preferably, the edge of the light-transmitting shielding portion extends to the side of the second conductive layer away from the substrate, and contacts the side of the second conductive layer away from the substrate; Preferably, the orthographic projection of the first conductive layer on the substrate is located within the orthographic projection of the second conductive layer on the substrate; Preferably, the second conductive layer comprises a metal material, and the first conductive layer and the second conductive 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; Preferably, the light-transmitting shielding portion comprises indium tin oxide or indium zinc oxide.

5. The display panel according to claim 4, characterized in that: The orthographic projection of the isolation structure on the substrate at least partially overlaps with the orthographic projection of the light-transmitting shielding portion on the substrate; Preferably, the orthographic projection of the second conductive layer on the substrate at least partially overlaps with the orthographic projection of the light-transmitting shielding portion on the substrate; Preferably, the orthographic projections of the second conductive layer of the isolation structure located at the peripheral side of the light-transmitting opening on the substrate overlap with the orthographic projections of the light-transmitting shielding portion on the substrate.

6. The display panel according to claim 1, characterized in that: One of the light-transmitting shielding portions is disposed correspondingly to one of the light-transmitting openings, and / or one of the light-transmitting shielding portions is disposed correspondingly to a plurality of the light-transmitting openings.

7. The display panel according to claim 1, characterized in that: The light-transmitting opening is arranged between two adjacent isolation openings; Alternatively, the isolation structure has a grid shape in its orthographic projection on the substrate and has grid intersection positions, and the light-transmitting openings are arranged at the grid intersection positions.

8. The display panel according to claim 1, characterized in that: The display panel further includes: A pixel definition layer is located on the substrate, the pixel definition layer includes a pixel definition portion and a pixel opening formed by the pixel definition portion, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate, 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 receiving opening is provided on the pixel defining portion, and the isolation structure is located in the receiving 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: Preparing an isolation structure on a substrate, wherein the isolation structure encloses an isolation opening and a light-transmitting opening; Preparing a light-transmitting shielding layer on the substrate, the light-transmitting shielding layer comprising a light-transmitting shielding portion, the orthographic projection of the light-transmitting opening on the substrate being located within the orthographic projection of the light-transmitting shielding portion on the substrate; A light-emitting layer is prepared on a side of the light-transmitting shielding layer away from the substrate, wherein the light-emitting layer includes a light-emitting unit located in the isolation opening; A touch layer is prepared on the side of the light emitting layer facing away from the substrate.

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