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 first electrode layer and a connecting part. At least part of the isolation structures are arranged at intervals, so that more gaps are formed, the area of the light-transmitting area is increased, and the transmittance of the display panel is improved. The plurality of isolated isolation structures are connected with one another through the connecting parts, so that the first electrodes in the isolation openings are electrically connected with one another through the connecting parts to form a whole-surface electrode, potential is conveniently provided for the first electrodes, the light-emitting units are driven to emit light, and the use performance of the display panel is improved.

Description

Technical Field

[0001] The present application relates to the field of display, 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 the display panel.

[0005] A first aspect of the present application provides a display panel, which includes: a substrate; an isolation structure located on the substrate, wherein a plurality of isolation structures are spaced apart from each other, and the isolation structures enclose an isolation opening; a light-emitting layer located on the substrate, wherein the light-emitting layer includes a light-emitting unit located in the isolation opening; a first electrode layer located on a side of the light-emitting layer facing away from the substrate, wherein the first electrode layer includes a first electrode arranged in the isolation opening, and the first electrode is arranged on a side of the light-emitting unit facing away from the substrate; and a connecting portion, wherein at least a portion of the connecting portion is connected between two adjacent isolation structures, and the first electrodes arranged in the two isolation openings are electrically connected via the isolation structure.

[0006] According to an implementation of the first aspect of the present application, the display panel includes a second display area and a first display area, the transmittance of the second display area is less than that of the first display area, the isolation structure includes a second isolation structure located in the second display area and a plurality of first isolation structures located in the first display area, the plurality of first isolation structures are spaced apart from each other, the second isolation structures enclose a second isolation opening, and the first isolation structures enclose a first isolation opening.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, at least a portion of the connecting portion is located between two adjacent first isolation structures.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, a plurality of first isolation structures are distributed in an array along a first direction and / or a second direction, and the first direction and the second direction intersect.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the connecting portion extends along the first direction and / or the second direction.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, all connecting portions extend along the first direction.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, all connecting portions extend along the second direction.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the connecting portion on the substrate includes a straight line segment and / or a curved line segment.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the connecting portion on the substrate includes an irregular curve segment.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, there are at least two connecting parts, and the shapes of the two connecting parts are different or the same.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the extension directions of the two connecting parts are different or the same.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the width of the connecting portion along a direction perpendicular to its extending direction, the orthographic projection of the connecting portion on the substrate, is 1 μm to 5 μm.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the first display area includes a light-transmitting area, and the orthographic projection of the light-transmitting area on the substrate and the orthographic projection of the first electrode on the substrate do not overlap.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, a first isolation structure encloses a plurality of first isolation openings.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, in the first display area, multiple light-emitting units form a display unit, the multiple display units are distributed in an array, and the multiple light-emitting units of the display unit are located in multiple first isolation openings formed by the same first isolation structure.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, at least one connecting portion is connected between the second isolation structure and the first isolation structure.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, each first isolation structure is connected to at least one connecting portion.

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

[0024] 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.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the first layer and the second layer both include metal materials, and the materials of the first layer and the second layer are different.

[0026] According to any of the aforementioned embodiments of the first aspect of the present application, the connecting portion and the isolation structure are arranged on the same layer.

[0027] According to any of the aforementioned embodiments of the first aspect of the present application, the connecting portion and at least one of the first layer and the second layer are arranged on the same layer.

[0028] 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 layer facing the substrate, and the orthographic projection of the first layer on the substrate is located within the orthographic projection of the third layer on the substrate.

[0029] According to any of the aforementioned embodiments of the first aspect of the present application, the connecting portion is arranged on the same layer as at least one of the first layer, the second layer, and the third layer.

[0030] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection area of ​​the second isolation opening on the substrate is greater than or equal to the orthographic projection area of ​​the first isolation opening on the substrate.

[0031] According to any of the aforementioned embodiments of the first aspect of the present application, the ratio of the area of ​​the second isolation structure on the substrate to the area of ​​the second display area is a first ratio, the ratio of the sum of the areas of the connecting portion and the first isolation structure on the substrate to the area of ​​the first display area is a second ratio, and the first ratio is greater than the second ratio.

[0032] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes: a pixel definition layer located on the substrate, the pixel definition layer including a pixel defining portion and a pixel opening formed by the pixel defining portion, and the pixel opening is connected to the isolation opening.

[0033] 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.

[0034] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes: a second electrode layer located between the substrate and the pixel definition layer, the second electrode layer including a plurality of second electrodes spaced apart from each other, and the second electrodes are exposed by the pixel opening.

[0035] 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.

[0036] 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.

[0037] A second aspect of the present application provides a display panel, the display panel comprising a second display area and a first display area, the transmittance of the second display area is less than the transmittance of the first display area, the display panel comprising: a substrate; an isolation structure located on the substrate, the isolation structure comprising a second isolation structure located in the second display area, a plurality of first isolation structures located in the first display area and a connecting portion, the plurality of first isolation structures being arranged at intervals from each other, the second isolation structures enclosing a second isolation opening, the first isolation structures enclosing a first isolation opening, at least part of the connecting portion being connected between two adjacent first isolation structures; a light-emitting layer located on the substrate, the light-emitting layer comprising light-emitting units located in the second isolation opening and the first isolation opening.

[0038] An embodiment of a third aspect of the present application provides a display device, which includes a display panel according to any of the above embodiments.

[0039] An embodiment of a fourth aspect of the present application provides a method for preparing a display panel, the method comprising:

[0040] Prepare isolation structures and connecting parts on the substrate, at least some of the isolation structures are arranged to be spaced apart from each other, the isolation structures enclose to form an isolation opening, and the connecting part is connected between two adjacent isolation structures;

[0041] A light-emitting layer is prepared on a substrate, wherein the light-emitting layer includes light-emitting units located in the isolation openings;

[0042] A first electrode layer is prepared on the side of the light-emitting layer away from the substrate. The first electrode layer includes a first electrode arranged in the isolation opening. The first electrode is arranged on the side of the light-emitting unit away from the substrate. The first electrodes arranged in the two isolation openings are electrically connected through an isolation structure.

[0043] 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 first electrode layer and a connecting portion. When preparing the light-emitting layer, the light-emitting layer has a large drop at the edge of the isolation structure, which is difficult to connect, and thus breaks. The light-emitting layer breaks to form light-emitting units that are disconnected from each other, 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 can be prepared without the use of precision masks, which can reduce the development and use of precision masks and reduce the preparation cost. At least part of the isolation structure is arranged at intervals to form more gaps to increase the area of ​​the light-transmitting region, thereby improving the transmittance of the display panel. Multiple isolated isolation structures are interconnected by connecting portions, so that the first electrodes in the isolation openings are electrically connected to each other through the connecting portions to form a whole-surface electrode, which is convenient for providing a potential to each first electrode, thereby driving the light-emitting unit to emit light and improving the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] 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.

[0045] Figure 1 is a schematic top view of a display panel provided in an embodiment of the present application;

[0046] Figure 2 is a partial top view of the first display area provided in an embodiment of the present application;

[0047] Figure 3 is a partial top view of a first display area provided by another embodiment;

[0048] Figure 4 yes Figure 3 Cross-sectional view at AA in the middle;

[0049] Figure 5 Another embodiment provides Figure 3 Cross-sectional view at AA in the middle;

[0050] Figure 6 yes Figure 3 Cross-section at the middle BB; Figure 7 is a partial cross-sectional view of the second display area provided in an embodiment of the present application;

[0051] Figure 8 is a partial top view of a first display area provided by another embodiment;

[0052] Fig. 9 is a partial top view of the first display area provided by another embodiment;

[0053] Fig.10 is a partial top view of the first display area provided by yet another embodiment;

[0054] Fig.11 is a partial top view of the first display area provided by another embodiment;

[0055] Fig.12 is a partial top view of the first display area provided by another embodiment;

[0056] Fig.13 is a partial cross-sectional view of a first display area provided by another embodiment;

[0057] Fig.14 It is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0058] Description of reference numerals:

[0059] 10. Display panel; AA1, second display area; AA2, first display area;

[0060] 100. Substrate;

[0061] 200, isolation structure; 201, second isolation structure; 202, first isolation structure; 210, first layer; 220, second layer; 230, third layer; 240, isolation opening; 241, second isolation opening; 242, first isolation opening; 250, connection portion;

[0062] 300, light-emitting layer; 310, light-emitting unit;

[0063] 400, first electrode layer; 410, first electrode;

[0064] 500, pixel definition layer; 510, pixel definition portion; 520, pixel opening;

[0065] 600, second electrode layer; 610, second electrode;

[0066] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0067] 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.

[0068] 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.

[0069] 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.

[0070] Embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel. 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.

[0071] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0072] Please also read Figures 1 to 7 , Figure 1 is a schematic top view of a display panel provided in an embodiment of the present application; Figure 2 is a partial top view of the first display area provided in an embodiment of the present application; Figure 3 is a partial top view of a first display area provided by another embodiment; Figure 4 yes Figure 3 Cross-sectional view at AA in the middle; Figure 5 Another embodiment provides Figure 3 Cross-sectional view at AA in the middle; Figure 6 yes Figure 3 Cross-section at the middle BB; Figure 7 It is a partial cross-sectional view of the second display area provided in an embodiment of the present application.

[0073] like Figures 1 to 7 As shown, the first embodiment of the present application provides a display panel 10, which includes: a substrate 100; an isolation structure 200, which is located on the substrate 100, and a plurality of isolation structures 200 are arranged at intervals from each other, and the isolation structures 200 enclose an isolation opening 240; a light-emitting layer 300, which is located on the substrate 100, and the light-emitting layer 300 includes a light-emitting unit 310 located in the isolation opening 240; a first electrode layer 400, which is located on a side of the light-emitting layer 300 away from the substrate 100, and the first electrode layer 400 includes a first electrode 410 arranged in the isolation opening 240, and the first electrode 410 is arranged on a side of the light-emitting unit 310 away from the substrate 100; a connecting portion 250, at least a portion of the connecting portion 250 is connected between two adjacent isolation structures 200, and the first electrodes 410 arranged in the two isolation openings 240 are electrically connected through the isolation structure 200.

[0074] 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 first electrode layer 400 and a connecting portion 250. When preparing the light-emitting layer 300, the light-emitting layer 300 has a large drop at the edge of the isolation structure 200, which is difficult to connect, and thus breaks. The light-emitting layer 300 breaks 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 preparing 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. At least part of the isolation structure 200 is arranged at intervals, thereby forming more gaps to increase the area of ​​the light-transmitting region, thereby improving the transmittance of the display panel 10. A plurality of isolated isolation structures 200 are interconnected via the connecting portion 250 , so that the first electrodes 410 in the isolation openings 240 are electrically connected to each other via the connecting portion 250 to form a whole-surface electrode, thereby providing a potential to each first electrode 410 , thereby driving the light-emitting unit 310 to emit light and improving the performance of the display panel 10 .

[0075] 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.

[0076] Optionally, the display panel 10 includes a second display area AA1 and a first display area AA2, the transmittance of the second display area AA1 is less than the transmittance of the first display area AA2, the isolation structure 200 includes a second isolation structure 201 located in the second display area AA1 and a plurality of first isolation structures 202 located in the first display area AA1, the plurality of first isolation structures 202 are arranged at intervals from each other, the second isolation structures 201 enclose a second isolation opening 241, and the first isolation structures 202 enclose a first isolation opening 242.

[0077] Optionally, at least a portion of the connecting portion 250 is located between two adjacent first isolation structures 202 .

[0078] In these optional embodiments, the first display area AA2 is used to set a photosensitive component, and the transmittance of the first display area AA2 is greater than the transmittance of the second display area AA1, thereby improving the photosensitivity of the first display area AA2. The multiple first isolation structures 202 of the first display area AA2 are arranged at intervals to form more gaps to increase the light-transmitting area of ​​the first display area AA2, thereby improving the transmittance of the first display area AA2. The multiple isolated first isolation structures 202 are interconnected by the connecting portion 250, so that the first electrodes 410 in the first isolation openings 242 are electrically connected to each other through the connecting portion 250 to form a whole-surface electrode, which is convenient for providing a potential to the first electrode 410 of the first display area AA2, thereby driving the light-emitting unit 310 of the first display area AA2 to emit light, thereby improving the performance of the display panel 10. Please refer to Figure 3 , Figure 8 and Fig. 9 , Figure 8 is a partial top view of a first display area provided by another embodiment; Fig. 9 FIG. 4 is a partial top view of the first display area provided by yet another embodiment.

[0079] like Figure 3 , Figure 8 and Fig. 9 As shown, in some optional embodiments, the plurality of first isolation structures 202 are distributed in an array along a first direction X and a second direction Y, and the first direction X and the second direction Y intersect.

[0080] Optionally, the connecting portion 250 extends along the first direction X and / or the second direction Y.

[0081] In these optional embodiments, the connecting portion 250 extends along the first direction X, or the connecting portion 250 extends along the second direction Y, or the connecting portion 250 extends along the first direction X and the second direction Y. The connecting portion 250 extends along the same direction, that is, two first isolation structures 202 adjacent to each other in the same direction are interconnected through the connecting portion 250, so that multiple isolated first isolation structures 202 are electrically connected to each other, which is convenient for providing electric potential to multiple first electrodes 410 of the first display area AA2. And the connecting portion 250 is only provided between two first isolation structures 202 adjacent to each other in the same direction, which can reduce the number of connecting portions 250, increase the light-transmitting area of ​​the first display area AA2, reduce the diffraction of light caused by the connecting portion 250, and enhance the photosensitivity effect of the first display area AA2. Please refer to Fig. 9 and Fig.10 , Fig.10 FIG. 4 is a partial top view of the first display area provided in yet another embodiment.

[0082] like Fig. 9 and Fig.10As shown, optionally, the orthographic projection of the connecting portion 250 on the substrate 100 includes a straight line segment and / or a curved line segment, and the orthographic projection of the connecting portion 250 on the substrate 100 is a straight line with a regular shape, which facilitates the preparation of the connecting portion 250. The orthographic projection of the connecting portion 250 on the substrate 100 is a curve, and the curved connecting portion 250 is irregular compared to the straight line, which can reduce the diffraction of light caused by the connecting portion 250 and improve the photosensitivity of the first display area AA2. For example, the orthographic projection of the connecting portion 250 on the substrate 100 is an S-shaped or serpentine curve, which can destroy the regularity of the connecting portion 250, reduce the diffraction of light caused by the connecting portion 250, and improve the photosensitivity of the first display area AA2.

[0083] See also Fig.11 , Fig.11 FIG. 4 is a partial top view of the first display area provided in yet another embodiment.

[0084] like Fig.11 As shown, optionally, the orthographic projection of the connecting portion 250 on the substrate 100 includes an irregular curve segment. An irregular curve refers to a curve that cannot be repeatedly obtained through a certain curve segment. The irregular curve connecting portion 250 can further destroy the diffraction of light, thereby improving the photosensitivity effect of the first display area AA2.

[0085] Optionally, the orthographic projection of the connecting portion 250 on the substrate 100 includes a combination of a curved segment and a straight segment.

[0086] like Fig.11 As shown, in some optional embodiments, there are at least two connecting parts 250, and the shapes of the two connecting parts 250 are different or the same.

[0087] Optionally, the two connecting portions 250 extend in different directions.

[0088] In these optional embodiments, at least two of the connecting portions 250 have different shapes, which reduces the uniformity of the distribution of the connecting portions 250, further destroys the diffraction caused by the connecting portions 250, and improves the photosensitive effect of the first display area AA2. For example, the orthographic projection shape of some of the connecting portions 250 on the substrate 100 is a straight line, and the orthographic projection shape of some of the connecting portions 250 on the substrate 100 is a curve, or at least two of the connecting portions 250 have different curved shapes. At least two of the connecting portions 250 have different extension directions, and multiple connecting portions 250 extend along multiple different directions to avoid the connecting portions 250 being evenly distributed in a certain direction, further reduce the uniformity of the distribution of the connecting portions 250, destroy the diffraction caused by the connecting portions 250, and improve the photosensitive effect of the first display area AA2. For example, when the shapes of the two connecting portions 250 are different, the extension directions of the two connecting portions 250 can be the same or different; when the extension directions of the three connecting portions 250 are different, the shapes of the three connecting portions 250 can be the same or different. Optionally, the two connecting portions 250 have different shapes and extension directions, which further reduces the distribution uniformity of the connecting portions 250 , destroys the diffraction caused by the connecting portions 250 , and improves the photosensitivity effect of the first display area AA2 .

[0089] In some optional embodiments, the width of the orthographic projection of the connecting portion 250 on the substrate 100 in a direction perpendicular to its extension direction is 1 μm to 5 μm, and the orthographic projection width of the connecting portion 250 on the substrate 100 refers to the size of the connecting portion 250 in a direction perpendicular to the extension direction of the connecting portion 250. For example, the orthographic projection width of the connecting portion 250 on the substrate 100 is 1 μm, 2 μm, 4 μm or 5 μm, etc.

[0090] In these optional embodiments, the width of the orthographic projection of the connection portion 250 on the substrate 100 is greater than or equal to 1 μm, which can improve the problem that the resistance of the connection portion 250 is too large and the power consumption of the connection portion 250 is large due to the small width of the connection portion 250. The width of the orthographic projection of the connection portion 250 on the substrate 100 is less than or equal to 5 μm, which can improve the problem that the area of ​​the connection portion 250 is too large due to the large width of the connection portion 250, the light-transmitting area of ​​the first display area AA2 is reduced, and the photosensitivity effect is poor.

[0091] Optionally, the first display area AA2 includes a light-transmitting area, the orthographic projection of the light-transmitting area on the substrate 100 and the orthographic projection of the first electrode 410 on the substrate 100 do not overlap, and the light-transmitting area and the first electrode 410 are staggered to avoid the influence of the first electrode 410 on the light transmittance of the light-transmitting area and improve the transmittance of the light-transmitting area.

[0092] See also Fig.12 , Fig.12 FIG. 4 is a partial top view of the first display area provided in yet another embodiment.

[0093] like Fig.12 As shown, in some optional embodiments, a first isolation structure 202 encloses and forms a plurality of first isolation openings 242 .

[0094] Optionally, in the first display area AA2 , a plurality of light emitting units 310 form a display unit, the plurality of display units are distributed in an array, and the plurality of light emitting units 310 of the display unit are located in a plurality of first isolation openings 242 enclosed by the same first isolation structure 202 .

[0095] In these optional embodiments, multiple first isolation structures 202 are independently spaced apart from each other, and one first isolation structure 202 encloses multiple first isolation openings 242 to accommodate multiple light-emitting units 310, thereby forming a display unit. One display unit and one first isolation structure 202 are correspondingly arranged, and the first isolation structures 202 corresponding to the display unit are electrically connected to each other through the connecting portion 250, so that the multiple first electrodes 410 in each first isolation opening 242 are electrically connected to each other through the connecting portion 250 to form a whole-surface electrode, which is convenient for providing a potential to the first electrode 410 of the first display area AA2, thereby driving the light-emitting unit 310 of the first display area AA2 to emit light, thereby improving the performance of the display panel 10. For example, one display unit includes at least one red light-emitting unit 310, at least one green light-emitting unit 310, and at least one blue light-emitting unit 310. Optionally, one display unit includes one red light-emitting unit 310, three green light-emitting units 310, and one blue light-emitting unit 310.

[0096] Optionally, at least one connecting portion 250 is connected between the second isolation structure 201 and the first isolation structure 202, and the connecting portion 250 electrically connects the second isolation structure 201 and the first isolation structure 202, thereby providing the potential of the second isolation structure 201 to the first isolation structure 202, thereby providing a potential to the first electrode 410 of the first display area AA2, thereby driving the light-emitting unit 310 of the first display area AA2 to emit light.

[0097] Optionally, each first isolation structure 202 is connected to at least one connection portion 250 , so that each first isolation structure 202 can be connected to an external potential through the connection portion 250 to achieve electrical conduction to the first electrode 410 .

[0098] In some optional embodiments, the isolation structure 200 includes a first layer 210 and a second layer 220 located on a side of the first layer 210 facing away from the substrate 100 , and an orthographic projection of the first layer 210 on the substrate 100 is located within an orthographic projection of the second layer 220 on the substrate 100 .

[0099] In these optional embodiments, the first layer 210 and the second layer 220 are stacked to form the isolation structure 200, the orthographic projection of the side of the first layer 210 disposed close to the substrate 100 away from the substrate 100 is located within the orthographic projection of the second layer 220 on the substrate 100, the orthographic projection area of ​​the second layer 220 is larger than the orthographic projection area of ​​the side of the first layer 210 away from the substrate 100, and the second layer 220 covers the surface of the first layer 210 close to the second layer 220, and at this time, the first layer 210 is recessed relative to the second layer 220 in a direction away from the second isolation opening 241 and the first isolation opening 242. 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 layer 210 is recessed relative to the second layer 220, so that 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. All embodiments of the present application do not require the isolation structure 200 to be an inverted trapezoidal structure or a two-layer structure, and any structure that can achieve the isolation effect of the light-emitting layer 300 is sufficient.

[0100] Optionally, the first layer 210 includes a conductive material, for example, the first layer 210 includes a non-metallic conductive material or a metallic conductive material, so as to achieve electrical connection between the isolation structure 200 and the second electrode 610 .

[0101] In some optional embodiments, the second layer 220 includes a conductive material or an insulating material, wherein the insulating material may be at least one of silicon nitride or silicon oxide.

[0102] 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 layer 210 using an etching solution, so that the first layer 210 is more easily concavely arranged relative to the second layer 220.

[0103] In some optional embodiments, the first layer 210 and the second layer 220 include metal materials, and the materials of the first layer 210 and the second layer 220 are different.

[0104] In these optional embodiments, when both the first layer 210 and the second layer 220 are made of metal materials, the first layer 210 may be wet-etched with an etching solution, and the etching rate of the second layer 220 may be set to be lower than the etching rate of the first layer 210 by setting the etching solution. Since the etching rate of the first 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 layer 210 is etched faster, so that the first layer 210 is set concave relative to the second layer 220.

[0105] See also Fig.13 , Fig.13 is a partial cross-sectional view of a first display area provided by another embodiment.

[0106] like Fig.13 As shown, in some optional embodiments, the isolation structure 200 further includes a third layer 230 located on the side of the first layer 210 facing the substrate 100 , and the orthographic projection of the first layer 210 on the substrate 100 is located within the orthographic projection of the third layer 230 on the substrate 100 .

[0107] In these optional embodiments, in order to obtain the first layer 210 with a concave setting, the first layer 210 has a faster etching rate than the second layer 220 and the third layer 230 during the etching process, thereby forming the concave first layer 210. Since the etching rate of the first 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 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.

[0108] Optionally, the material of the second layer 220 is titanium (Ti) or molybdenum (Mo), the material of the first layer 210 is aluminum (Al), silver (Ag) or copper (Cu), and the material of the third layer 230 is titanium (Ti) or molybdenum (Mo). For example, the isolation structure 200 is a three-layer metal composite material of Ti / Al / Ti (titanium / aluminum / titanium) or Ti / Al / Mo (titanium / aluminum / molybdenum).

[0109] Patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072, CN117979755A, CN117998 900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A record the relevant contents of the isolation structure 200 (or partition structure or isolation column) for reference.

[0110] Optionally, the connection portion 250 is disposed in the same layer as at least one of the first layer 210 and the second layer 220, the connection portion 250 is disposed in the same layer as one of the first layer 210 and the second layer 220, or the connection portion 250 is disposed in the same layer as both of the first layer 210 and the second layer 220. This allows the connection portion 250 to be simultaneously prepared with the same material as at least one of the first layer 210 and the second layer 220, thereby avoiding additional processes and simplifying the preparation process of the display panel 10.

[0111] In some optional embodiments, the connection portion 250 is disposed on the same layer as at least one of the first layer 210 , the second layer 220 , and the third layer 230 .

[0112] In these optional embodiments, the connection portion 250 is disposed in the same layer as one of the first layer 210, the second layer 220, and the third layer 230, or the connection portion 250 is disposed in the same layer as at least two of the first layer 210, the second layer 220, and the third layer 230, or the connection portion 250 is disposed in the same layer as the first layer 210, the second layer 220, and the third layer 230. The connection portion 250 is disposed in the same layer as at least one of the first layer 210, the second layer 220, and the third layer 230, so that the connection portion 250 can be simultaneously prepared with the same material as at least one of the first layer 210, the second layer 220, and the third layer 230, avoiding additional processes and simplifying the preparation process of the display panel 10.

[0113] Optionally, the connecting portion 250 is arranged on the same layer as the isolation structure 200. When the isolation structure 200 includes a first layer 210 and a second layer 220, the connecting portion 250, the first layer 210 and the second layer 220 are arranged on the same layer, and the connecting portion 250 and the first layer 210 and the second layer 220 are prepared simultaneously with the same material; when the isolation structure 200 includes a first layer 210, a second layer 220 and a third layer 230, the connecting portion 250, the first layer 210, the second layer 220 and the third layer 230 are arranged on the same layer, and the connecting portion 250 and the first layer 210, the second layer 220 and the third layer 230 are prepared simultaneously with the same material, thereby further simplifying the preparation process.

[0114] In some optional embodiments, the orthographic projection area of ​​the second isolation opening 241 on the substrate 100 is greater than or equal to the orthographic projection area of ​​the first isolation opening 242 on the substrate 100 .

[0115] In these optional embodiments, the orthographic projection area of ​​the first isolation structure 202 on the substrate 100 is smaller, which reduces the distribution area of ​​the first isolation structure 202 in the first display area AA2 and increases the area of ​​the light-transmitting region of the first display area AA2, thereby improving the transmittance and photosensitivity of the first display area AA2.

[0116] In some optional embodiments, the ratio of the area of ​​the second isolation structure 201 on the substrate 100 to the area of ​​the second display area AA1 is a first ratio, the ratio of the sum of the areas of the connecting portion 250 and the first isolation structure 202 on the substrate 100 to the area of ​​the first display area AA2 is a second ratio, and the first ratio is greater than the second ratio.

[0117] In these optional embodiments, the ratio of the area of ​​the second isolation structure 201 on the substrate 100 to the area of ​​the second display area AA1 is the metal density of the second isolation structure 201 in the second display area AA1, and the ratio of the sum of the areas of the connecting portion 250 and the first isolation structure 202 on the substrate 100 to the area of ​​the first display area AA2 is the metal density of the connecting portion 250 and the first isolation structure 202 in the first display area AA2. The first ratio is greater than the second ratio, that is, the metal density of the second display area AA1 is greater than the metal density of the first display area AA2, and the metal density of the first display area AA2 is smaller, so that the distribution area of ​​the connecting portion 250 and the first isolation structure 202 in the first display area AA2 is smaller, and the area of ​​the light-transmitting region of the first display area AA2 is larger, thereby improving the transmittance and photosensitivity of the first display area AA2.

[0118] like Figure 4 As shown, in some optional embodiments, the display panel 10 further includes: a pixel definition layer 500 located on the substrate 100 , the pixel definition layer 500 includes a pixel defining portion 510 and a pixel opening 520 enclosed by the pixel defining portion 510 , and the pixel opening 520 is connected to the isolation opening 240 .

[0119] In these optional embodiments, the pixel opening 520 formed by the pixel defining portion 510 is used to define the light emitting area of ​​the display panel 10. The pixel opening 520 is connected to the isolation opening 240 to reduce the shielding of the pixel opening 520 by the isolation structure 200, thereby ensuring the light emitting effect of the display panel 10.

[0120] In some optional embodiments, the isolation structure 200 is located on a side of the pixel defining portion 510 facing away from the substrate 100 .

[0121] In these optional embodiments, the isolation structure 200 is disposed on the pixel defining portion 510, and the isolation structure 200 has a large height difference equivalent to the pixel opening 520. When preparing the second electrode layer 600, due to the large height difference, the second electrode layer 600 is more easily disconnected at the isolation structure 200 position, thereby reducing the difficulty of preparing the second electrode layer 600.

[0122] In some optional embodiments, the display panel 10 further includes: a second electrode layer 600 located between the substrate 100 and the pixel definition layer 500 , the second electrode layer 600 including a plurality of second electrodes 610 spaced apart from each other, and the second electrodes 610 are exposed by the pixel opening 520 .

[0123] In these optional embodiments, the second electrode 610 serves as an electrode of the light-emitting unit 310 to ensure the light emission of the light-emitting unit 310. One of the first electrode 410 and the second electrode 610 serves as an anode of the light-emitting unit 310, and the other serves as a cathode of the light-emitting unit 310. The embodiment of the present application takes the first electrode 410 as the cathode of the light-emitting unit 310 and the second electrode 610 as the anode of the light-emitting unit 310 as an example.

[0124] 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 410 on the substrate 100 .

[0125] 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 410 on the substrate 100, that is, the first electrode 410 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.

[0126] Optionally, the light-emitting unit 310 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 cross-color problem of the light-emitting units 310.

[0127] 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).

[0128] like Figure 3 , Figure 7 and Fig.13As shown, the second embodiment of the present application provides a display panel 10, the display panel 10 includes a second display area AA1 and a first display area AA2, the transmittance of the second display area AA1 is less than the transmittance of the first display area AA2, and the display panel 10 includes: a substrate 100; an isolation structure 200, located on the substrate 100, the isolation structure 200 includes a second isolation structure 201 located in the second display area AA1, a plurality of first isolation structures 202 located in the first display area AA2 and a connecting portion 250, the plurality of first isolation structures 202 are arranged at intervals from each other, the second isolation structures 201 enclose a second isolation opening 241, the first isolation structures 202 enclose a first isolation opening 242, and at least part of the connecting portion 250 is connected between two adjacent first isolation structures 202; a light-emitting layer 300, located on the substrate 100, the light-emitting layer 300 includes a light-emitting unit 310 located in the second isolation opening 241 and the first isolation opening 242.

[0129] 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 light-emitting layer 300. The first display area AA2 is used to set a photosensitive component, and the transmittance of the first display area AA2 is greater than the transmittance of the second display area AA1, thereby improving the photosensitivity of the first display area AA2. When preparing the light-emitting layer 300, the light-emitting layer 300 has a large drop at the edge of the isolation structure 200, which is difficult to connect, and thus breaks. The light-emitting layer 300 breaks 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 preparation costs. The isolation structure 200 includes a second isolation structure 201, a first isolation structure 202 and a connecting portion 250. The multiple first isolation structures 202 of the first display area AA2 are arranged at intervals to form more gaps to increase the light-transmitting area of ​​the first display area AA2, thereby improving the transmittance of the first display area AA2. Multiple isolated first isolation structures 202 are interconnected through the connecting portion 250, so that the first electrodes 410 in the first isolation opening 242 are electrically connected to each other through the connecting portion 250 to form a whole-surface electrode, which is convenient for providing a potential to the first electrode 410 of the first display area AA2, thereby driving the light-emitting unit 310 of the first display area AA2 to emit light, thereby improving the performance of the display panel 10. The connecting portion 250 is arranged on the same layer as the isolation structure 200, and the connecting portion 250 and the isolation structure 200 are prepared simultaneously with the same material to simplify the preparation process.

[0130] 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.

[0131] The embodiment of the third aspect of the present application further provides a display device, comprising the display panel 10 of any of the above embodiments. Since the display device provided by the embodiment of the third aspect of the present application comprises the display panel 10 of any of the above embodiments, the display device provided by the embodiment of the third aspect of the present application has the beneficial effects of the display panel 10 of any of the above embodiments, which will not be described in detail here.

[0132] 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.

[0133] See also Figures 1 to 14 , Fig.14 It is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0134] The fourth 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 in any of the above embodiments. Fig.13 As shown, the preparation method comprises:

[0135] Step S01: preparing isolation structures and connecting parts on a substrate, wherein at least some of the isolation structures are spaced apart from each other, the isolation structures enclose an isolation opening, and the connecting part is connected between two adjacent isolation structures.

[0136] Step S02: preparing a light-emitting layer on a substrate, wherein the light-emitting layer includes light-emitting units located in the isolation openings.

[0137] Step S03: preparing a first electrode layer on the side of the light-emitting layer away from the substrate, the first electrode layer comprising a first electrode arranged in the isolation opening, the first electrode arranged on the side of the light-emitting unit away from the substrate, and the first electrodes arranged in the two isolation openings are electrically connected through an isolation structure.

[0138] According to the preparation method of the fourth aspect of the present application, the isolation structure 200 and the connection part 250 are prepared by step S01. At least part of the isolation structure 200 is arranged at intervals, so as to form more gaps to increase the area of ​​the light-transmitting region, thereby improving the transmittance of the display panel 10. A plurality of isolated isolation structures 200 are connected to each other through the connection part 250, so that the first electrodes 410 in the isolation opening 240 are electrically connected to each other through the connection part 250 to form a whole-surface electrode, which is convenient for providing a potential to the first electrode 410, thereby driving the light-emitting unit 310 to emit light, and improving the performance of the display panel 10. The light-emitting layer 300 is prepared by step S02. When preparing the light-emitting layer 300, the light-emitting layer 300 has a large drop at the edge of the isolation structure 200, which is difficult to connect, and thus breaks. The light-emitting layer 300 breaks 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 preparing the light-emitting unit 310 can be prepared without using a precision mask plate, which can reduce the development and use of precision masks and reduce the preparation cost. The first electrode 410 is prepared through step S03.

[0139] 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 comprises: substrate; An isolation structure is located on the substrate, at least some of the isolation structures are spaced apart from each other, and the isolation structures enclose an isolation opening; A light-emitting layer, located on the substrate, wherein the light-emitting layer includes light-emitting units 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 arranged in the isolation opening, and the first electrode is arranged on a side of the light-emitting unit away from the substrate; A connecting portion, at least a portion of which is located between two adjacent isolation structures, and the first electrodes arranged in the two isolation openings are electrically connected through the isolation structure.

2. The display panel according to claim 1, characterized in that: The display panel includes a second display area and a first display area, the light transmittance of the second display area is lower than the light transmittance of the first display area, the isolation structure includes a second isolation structure located in the second display area and a plurality of first isolation structures located in the first display area, the plurality of first isolation structures are arranged at intervals from each other, the second isolation structures enclose a second isolation opening, and the first isolation structures enclose a first isolation opening; Preferably, at least part of the connecting portion is located between two adjacent first isolation structures.

3. The display panel according to claim 2, characterized in that: A plurality of first isolation structures are distributed in an array along a first direction and / or a second direction, and the first direction and the second direction intersect; Preferably, the connecting portion extends along the first direction and / or the second direction; Preferably, all the connecting portions extend along the first direction; Preferably, all the connecting portions extend along the second direction.

4. The display panel according to claim 1, characterized in that: The orthographic projection of the connecting portion on the substrate includes a straight line segment and / or a curved line segment.

5. The display panel according to claim 4, characterized in that: The orthographic projection of the connecting portion on the substrate includes an irregular curve segment.

6. The display panel according to claim 4, characterized in that: There are at least two connecting parts, and the shapes of the two connecting parts are different or the same; Preferably, the extending directions of the two connecting parts are different or the same.

7. The display panel according to claim 2, characterized in that: The width of the connecting portion along the direction perpendicular to the extending direction of the connecting portion on the orthographic projection of the substrate is 1 μm to 5 μm; Preferably, the first display area includes a light-transmitting area, and an orthographic projection of the light-transmitting area on the substrate and an orthographic projection of the first electrode on the substrate do not overlap.

8. The display panel according to claim 2, characterized in that: A first isolation structure encloses a plurality of first isolation openings; Preferably, in the first display area, a plurality of the light-emitting units form a display unit, the plurality of the display units are distributed in an array, and the plurality of the light-emitting units of the display unit are located in a plurality of the first isolation openings formed by the same first isolation structure.

9. The display panel according to claim 2, characterized in that: At least one of the connecting parts is connected between the second isolation structure and the first isolation structure; Preferably, each of the first isolation structures is connected to at least one of the connecting parts.

10. The display panel according to claim 1, characterized in that: The isolation structure includes a first layer, the first layer being electrically connected to the first electrode; Preferably, the isolation structure comprises a second layer located on a side of the first layer away from the substrate, and an orthographic projection of the first layer on the substrate is located within an orthographic projection of the second layer on the substrate; Preferably, the first layer comprises a conductive material; Preferably, the second layer comprises a conductive material or an insulating material; Preferably, the first layer and the second layer both comprise metal materials, and the materials of the first layer and the second layer are different; Preferably, the connecting portion and the isolation structure are arranged at the same layer.

11. The display panel according to claim 10, characterized in that: The connection portion is disposed on the same layer as at least one of the first layer and the second layer.

12. The display panel according to claim 10, characterized in that: The isolation structure further includes a third layer located on a side of the first layer facing the substrate, and an orthographic projection of the first layer on the substrate is located within an orthographic projection of the third layer on the substrate; Preferably, the connecting portion is provided on the same layer as at least one of the first layer, the second layer and the third layer.

13. The display panel according to claim 2, characterized in that: The orthographic projection area of ​​the second isolation opening on the substrate is greater than or equal to the orthographic projection area of ​​the first isolation opening on the substrate.

14. The display panel according to claim 2, characterized in that: The ratio of the area of ​​the second isolation structure on the substrate to the area of ​​the second display area is a first ratio, the ratio of the sum of the areas of the connecting portion and the first isolation structure on the substrate to the area of ​​the first display area is a second ratio, and the first ratio is greater than the second ratio.

15. The display panel according to claim 1, characterized in that: The display panel further includes: A pixel definition layer, located on the substrate, the pixel definition layer comprises a pixel definition portion and a pixel opening formed by the pixel definition portion, the pixel opening being connected to the isolation opening; Preferably, the isolation structure is located on a side of the pixel defining portion facing away from the substrate.

16. The display panel according to claim 15, characterized in that: The display panel further includes: The second electrode layer is located between the substrate and the pixel definition layer. The second electrode layer includes a plurality of second electrodes spaced apart from each other. The second electrodes are exposed from the pixel openings.

17. The display panel according to claim 1, characterized in that: 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.

18. A display panel, characterized in that: The display panel includes a second display area and a first display area, the light transmittance of the second display area is less than the light transmittance of the first display area, and the display panel includes: substrate; an isolation structure located on the substrate, the isolation structure comprising a second isolation structure located in the second display area, a plurality of first isolation structures located in the first display area, and a connecting portion, the plurality of first isolation structures being arranged at intervals from each other, the second isolation structures enclosingly forming a second isolation opening, the first isolation structures enclosingly forming a first isolation opening, and at least a portion of the connecting portion connecting between two adjacent first isolation structures; The light-emitting layer is located on the substrate, and the light-emitting layer includes light-emitting units located in the second isolation opening and the first isolation opening.

19. A display device, characterized in that: A display panel comprising any one of claims 1-18.

20. A method for preparing a display panel, characterized in that: The method comprises: Preparing isolation structures and connecting parts on the substrate, wherein at least some of the isolation structures are arranged at intervals from each other, the isolation structures enclose an isolation opening, and at least some of the connecting parts are connected between two adjacent isolation structures; Preparing a light-emitting layer on the substrate, wherein the light-emitting layer includes a light-emitting unit located in the isolation opening; A first electrode layer is prepared on the side of the light-emitting layer away from the substrate, the first electrode layer includes a first electrode arranged in the isolation opening, the first electrode is arranged on the side of the light-emitting unit away from the substrate, and the first electrodes arranged in the two isolation openings are electrically connected through the isolation structure.

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