Pixel encapsulated display panel and display device

Abstract

The present application relates to a pixel encapsulation display panel and a display device, the pixel encapsulation display panel includes: a functional layer, which includes a display area and a non-display area, and the display area includes a plurality of pixel areas; a first encapsulation layer, which covers the display area and the non-display area of ​​the functional layer; a plurality of annular retaining walls, the plurality of annular retaining walls are all arranged on the surface of the first encapsulation layer, the plurality of annular retaining walls correspond to the plurality of pixel areas one by one, and the annular retaining walls are arranged at the periphery of the pixel areas; a plurality of second encapsulation layers, the plurality of second encapsulation layers are all covered on the surface of the first encapsulation layer, and the plurality of second encapsulation layers are one by one in the plurality of annular retaining walls. The present application first uses the first encapsulation layer to fully cover and encapsulate the functional layer, and then uses the plurality of second encapsulation layers to separately encapsulate the plurality of pixel areas on the functional layer, so that the width of the non-display area required to be reserved for the functional layer can be designed to be narrower, which is reflected in the narrower edge width of the display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a pixel encapsulated display panel and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) display is a self-luminous display. Compared with liquid crystal display (LCD), OLED display does not require a backlight, so OLED display is lighter and thinner. In addition, OLED display also has the advantages of high brightness, low power consumption, wide viewing angle, high response speed, wide operating temperature range, etc., and is increasingly used in various high-performance display fields.

[0003] In the related art, thin film encapsulation is often used to ensure that the organic light-emitting material and the electrode are not corroded by water vapor and oxygen in the external environment. Specifically, an inorganic encapsulation layer and an organic encapsulation layer are superimposed on the functional layer to achieve an encapsulation effect.

[0004] At the same time, in order to avoid the increase of the invalid area around the device due to the extension effect of the encapsulation layer, the prior art often etches a retaining wall on the surface of the functional layer. The retaining wall is arranged in a ring shape to shield the subsequent encapsulation layer and prevent the encapsulation layer from extending and overflowing and failing. Generally, two annular retaining walls are etched on the functional layer to prevent the encapsulation layer from failing.

[0005] However, due to the setting of the two retaining walls, the area of ​​the panel edge region occupied by the retaining walls is relatively large. In addition, the retaining walls are formed on the functional layer, and the inorganic layer will cover the retaining walls, further increasing the width of the retaining walls, resulting in a wider border of the formed panel, making it difficult to adapt to the display requirements of narrow borders and high screen-to-body ratio. Summary of the invention

[0006] The embodiments of the present application provide a pixel-encapsulated display panel and a display device to solve the technical problem in the related art that the frame of the molded panel is relatively wide and it is difficult to adapt to the display requirements of narrow frame and high screen-to-body ratio.

[0007] In a first aspect, a pixel encapsulation type display panel is provided, comprising:

[0008] A functional layer, the functional layer comprising a display area and a non-display area located outside the display area, the display area comprising a plurality of pixel areas, and the plurality of pixel areas are evenly spaced;

[0009] a first encapsulation layer, wherein the first encapsulation layer covers the display area and the non-display area of ​​the functional layer;

[0010] A plurality of annular retaining walls, each of which is disposed on the surface of the first encapsulation layer, each of which corresponds to a plurality of pixel regions one by one, and each of which is arranged at the periphery of each pixel region, wherein a portion of the sidewalls of the annular retaining walls at the distribution edge of the plurality of annular retaining walls has a positive projection on the functional layer falling on the non-display region;

[0011] A plurality of second packaging layers are provided, wherein the plurality of second packaging layers are all covered on the surface of the first packaging layer, and the plurality of second packaging layers are correspondingly located in the plurality of annular retaining walls, and the annular retaining walls limit the overflow of the second packaging layers.

[0012] In some embodiments, the plurality of annular retaining walls and the plurality of the second packaging layers are processed by inkjet printing.

[0013] In some embodiments, adjacent annular retaining walls among the plurality of annular retaining walls are connected to each other to form a mesh retaining wall structure.

[0014] In some embodiments, buffer recesses are preset at the cross intersections of the mesh retaining wall structure, and the buffer recesses are preset on the surface of the mesh retaining wall structure.

[0015] In some embodiments, the inner side surface of the annular retaining wall is provided with a plurality of surface-increasing structures, and the plurality of surface-increasing structures are arranged at intervals along the extension direction of the annular retaining wall.

[0016] In some embodiments, the surface-enhancing structure includes convex strips or concave grooves, and a plurality of the surface-enhancing structures are all the convex strips or the concave grooves, or,

[0017] Some of the plurality of surface-enhancing structures include the convex strips, and another portion includes the concave grooves.

[0018] In some embodiments, the orthographic projection of the protruding surface of the protruding strip on the first packaging layer is a plurality of line segments, at least one circular arc segment, or a combination of a plurality of line segments and at least one circular arc segment;

[0019] The orthographic projection of the groove wall of the groove on the first packaging layer is a plurality of line segments, at least one circular arc segment, or a combination of at least one line segment and at least one circular arc segment.

[0020] In some embodiments, a hydrophobic layer is provided on the surface of the annular retaining wall.

[0021] In some embodiments, the pixel encapsulation display panel further includes a reinforcement structure, wherein the reinforcement structure includes:

[0022] A reinforcement recess, wherein the reinforcement recess is provided on the surface of the first packaging layer;

[0023] A reinforcement protrusion, wherein the reinforcement protrusion is integrally formed on the bottom surface of the annular retaining wall; wherein,

[0024] The annular retaining wall and the first packaging layer are plug-fitted through the reinforcement recess and the reinforcement protrusion.

[0025] The beneficial effects of the technical solution provided by this application include:

[0026] The embodiment of the present application provides a pixel encapsulation display panel, which first uses a first encapsulation layer to fully cover and encapsulate the functional layer, and then uses multiple second encapsulation layers to separately encapsulate multiple pixel areas on the functional layer. On the one hand, multiple annular retaining walls correspond to multiple pixel areas respectively, and multiple second encapsulation layers are respectively confined within multiple annular retaining walls to encapsulate the pixel areas. Each second encapsulation layer is independent, and the material forming the second encapsulation layer in each annular retaining wall is less, which makes it easier to use the annular retaining wall to limit the overflow of the second encapsulation layer. Compared with the second encapsulation layer in the related art that encapsulates the functional layer as a whole, this form of separate encapsulation is convenient for designing the width of the side wall of the annular retaining wall to be smaller, so the width of the non-display area required to be reserved for the functional layer can also be designed to be narrower, which is reflected in the narrow edge width of the display panel, which meets the use requirements of panels with high screen-to-body ratio and narrow borders. In addition, the second encapsulation layer encapsulates the pixel area, which also saves materials and reduces processing costs.

[0027] On the other hand, since the annular retaining wall is arranged on the surface of the first packaging layer, compared with the technical form in the related art in which the first packaging layer covers the annular retaining wall, the annular retaining wall will not be widened due to the coverage of the first packaging layer, and the width of the side wall of the annular retaining wall is narrower. Therefore, the width of the non-display area reserved on the functional layer can be designed to be ultra-narrow, and the layout requirements of the edge retaining wall can also be met. After the width of the non-display area of ​​the functional layer is narrowed, it is specifically reflected in the narrower border width of the display panel, which meets the use requirements of panels with high screen-to-body ratio and narrow borders. In addition, since the annular retaining wall is in direct contact with the second packaging layer and limits the overflow of the second packaging layer, it is convenient to block the extension of the second packaging layer by changing the material properties of the annular retaining wall, so as to avoid the failure of the second packaging layer.

[0028] In a second aspect, a display device is provided, comprising the pixel-encapsulated display panel as described above.

[0029] Another embodiment of the present application provides a display device. Since the display device includes the pixel-encapsulated display panel described above, the beneficial effects of the display device are consistent with the beneficial effects of the pixel-encapsulated display panel described above, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of a pixel-encapsulated display panel provided in an embodiment of the present application;

[0032] Figure 2 A cross-sectional view of a pixel-encapsulated display panel provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of a mesh retaining wall structure provided in an embodiment of the present application;

[0034] Figure 4 A cross-sectional view of a mesh-shaped retaining wall structure of multiple annular retaining walls of a pixel-encapsulated display panel provided in an embodiment of the present application;

[0035] Figure 5 A schematic diagram of a buffer depression on a mesh retaining wall structure provided in an embodiment of the present application;

[0036] Figure 6 A schematic diagram of a surface enhancement structure provided in an embodiment of the present application as a groove;

[0037] Figure 7 A schematic diagram of a convex surface structure provided in an embodiment of the present application;

[0038] Figure 8 A schematic diagram of a plurality of surface-enhancing structures provided in an embodiment of the present application, some of which are protrusions and others are grooves;

[0039] Fig. 9 A schematic diagram of a specific shape of a surface enhancement structure provided in an embodiment of the present application;

[0040] Fig.10 A schematic diagram of another specific shape of the surface enhancement structure provided in an embodiment of the present application;

[0041] Fig.11 A schematic diagram of another specific shape of the surface enhancement structure provided in an embodiment of the present application;

[0042] Fig.12 A schematic diagram of another specific shape of the surface enhancement structure provided in an embodiment of the present application;

[0043] Fig.13 A schematic diagram of a reinforcement structure provided in an embodiment of the present application.

[0044] In the figure: 1, functional layer; 1a, display area; 1a1, pixel area; 1b, non-display area; 2, first packaging layer; 3, second packaging layer; 4, annular retaining wall; 4a, buffer recess; 5, surface enhancement structure; 6, reinforcement structure; 61, reinforcement recess; 62, reinforcement protrusion. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0046] The embodiment of the present application provides a pixel encapsulation display panel and a display device, wherein the display panel first uses a first encapsulation layer to fully cover and encapsulate a functional layer, and then uses multiple second encapsulation layers to separately encapsulate multiple pixel areas on the functional layer, so that the width of the non-display area required to be reserved for the functional layer can be designed to be narrower, which is reflected in the narrower edge width of the display panel. The present application solves the technical problem that the frame of the molded panel in the related art is wide and it is difficult to adapt to the display requirements of narrow frame and high screen ratio.

[0047] Reference Figure 1 and Figure 2 A pixel encapsulation display panel includes a functional layer 1, a first encapsulation layer 2, a plurality of annular retaining walls 4 and a plurality of second encapsulation layers 3.

[0048] Reference Figure 1 and Figure 2 , wherein the functional layer 1 includes a display area 1a and a non-display area 1b located outside the display area 1a, and the display area 1a includes a plurality of pixel areas 1a1, and the plurality of pixel areas 1a1 are evenly spaced. In this embodiment, the plurality of pixel areas 1a1 are evenly distributed in an array, which includes a plurality of rows and a plurality of columns. Specifically, the display area 1a is the light-emitting part of the panel, and the non-display area 1b is the frame part of the panel.

[0049] Reference Figure 1 and Figure 2 , the first encapsulation layer 2 covers the surface of the functional layer 1, and fully covers the display area 1a and the non-display area 1b. In this embodiment, the first encapsulation layer 2 is an inorganic encapsulation layer, specifically, a chemical vapor deposition layer. The functional layer 1 is covered by the first encapsulation layer 2, and the functional layer 1 is encapsulated, so that the display area 1a of the functional layer 1 is isolated from water vapor and oxygen in the external environment, so as to prevent the display area 1a of the functional layer 1 from being corroded, and ensure the normal operation of the display area 1a.

[0050] Reference Figure 1 and Figure 2 , multiple second encapsulation layers 3 are all covered on the surface of the first encapsulation layer 2, and the multiple second encapsulation layers 3 correspond to the multiple pixel areas 1a1 one by one, and the orthographic projections of the second encapsulation layer 3 on the functional layer 1 all fall on and cover the pixel areas 1a1 corresponding to the second encapsulation layer 3. The second encapsulation layer 3 is an organic encapsulation layer. The second encapsulation layer 3 encapsulates the pixel area 1a1 of the display area 1a of the functional layer 1, so that the pixel area 1a1 of the display area 1a of the functional layer 1 is isolated from water vapor and oxygen in the external environment, and the pixel area 1a1 of the display area 1a of the functional layer 1 is prevented from being corroded, so as to ensure the normal operation of the display area 1a. The first encapsulation layer 2 and the second encapsulation layer 3 are combined to realize the complete encapsulation of the display area 1a of the functional layer 1, so as to prevent the display area 1a of the functional layer 1 from being corroded, and ensure the normal operation of the panel.

[0051] Reference Figure 1 and Figure 2 , multiple annular retaining walls 4 are all arranged on the surface of the first packaging layer 2, and the multiple annular retaining walls 4 correspond to the multiple pixel areas 1a1 one by one, and the annular retaining walls 4 are arranged at the periphery of the pixel area 1a1. Multiple second packaging layers 3 are located in the multiple annular retaining walls 4 one by one, and the annular retaining walls 4 limit the overflow of the second packaging layers 3.

[0052] Reference Figure 1 and Figure 2 Among the multiple annular retaining walls 4, part of the side walls of the annular retaining walls 4 at the distribution edge have their orthographic projections on the non-display area 1b of the functional layer 1, that is, the side walls of the annular retaining walls 4 at the edge cover the non-display area 1b of the functional layer 1, and the non-display area 1b of the functional layer 1 reserves width space for the arrangement of the annular retaining walls 4 at the edge.

[0053] In this arrangement, since multiple annular retaining walls 4 are used to limit the overflow of multiple second packaging layers 3 respectively, the material of the second packaging layer 3 in the annular retaining walls 4 is less, and therefore the width of the annular retaining walls 4 can be designed to be narrower, and the width required to be reserved for the non-display area 1b of the functional layer 1 is also narrower, which is reflected in the narrower border of the display panel, which is suitable for the display requirements of high screen-to-body ratio and narrow border.

[0054] Furthermore, the first encapsulation layer 2 no longer covers the annular retaining wall 4, so the first encapsulation layer 2 will not widen the width of the annular retaining wall 4, further reducing the area of ​​the non-display region 1b required to be reserved for the functional layer 1, which is reflected in a narrower frame of the panel.

[0055] In addition, the annular retaining wall 4 is in direct contact with the second encapsulation layer 3, which is convenient for changing the material properties of the annular retaining wall 4 to prevent the second encapsulation layer 3 from overflowing, thereby ensuring the encapsulation stability of the functional layer 1. Compared with the traditional form in which the inorganic encapsulation layer covers the surface of the annular retaining wall 4 and contacts the second encapsulation layer 3 through the inorganic encapsulation layer, the material of the inorganic encapsulation layer is difficult to change, so the traditional technical form has high requirements for the width, height and number of the annular retaining wall 4. In this embodiment, the material selection of the annular retaining wall 4 is flexible, which is convenient for suppressing the overflow of the second encapsulation layer 3 through the material properties of the annular retaining wall 4 to ensure the encapsulation stability.

[0056] Among them, multiple annular retaining walls 4 and multiple second packaging layers 3 are all processed by inkjet printing. Specifically, the annular retaining wall 4 is partially processed by inkjet printing using electrofluidic technology, which has high printing accuracy and can achieve accurate processing of the annular retaining wall 4, ensure the forming position of the annular retaining wall 4, and reduce the width change caused by the deviation of the forming position of the annular retaining wall 4, which is reflected in that the frame of the panel is easier to control.

[0057] The second encapsulation layer 3 is processed by spray printing using piezoelectric technology or electrofluid technology. In this embodiment, the second encapsulation layer 3 is processed by spray printing using piezoelectric technology, which has sufficient printing accuracy and low processing cost.

[0058] In addition, since the annular retaining wall 4 and the second encapsulation layer 3 are both formed on the surface of the first encapsulation layer 2, the annular retaining wall 4 and the second encapsulation layer 3 can be printed and processed at the same time, which greatly reduces the processing time. The annular retaining wall 4 is no longer formed on the functional layer 1 by etching technology, which saves one processing step. The forming process of the annular retaining wall 4 is merged into the forming step of the second encapsulation layer 3, and the processing efficiency of the panel is higher.

[0059] In this embodiment, a hydrophobic layer is provided on the surface of the annular retaining wall 4, and the hydrophobic layer is covered on the surface of the annular retaining wall 4 by inkjet printing technology. Due to the provision of the hydrophobic layer, the second encapsulation layer 3 is restricted from spreading onto the annular retaining wall 4, so as to prevent the second encapsulation layer 3 from overflowing from the annular retaining wall 4, thereby improving the encapsulation stability. In this embodiment, the hydrophobic layer includes a fluorine layer.

[0060] Reference Figure 3 and Figure 4 Preferably, adjacent annular retaining walls 4 among the plurality of annular retaining walls 4 are connected to each other to form a mesh retaining wall structure.

[0061] With such arrangement, after a plurality of annular retaining walls 4 are connected, adjacent annular retaining walls 4 can share a side wall. On the one hand, the side wall width of the annular retaining walls 4 can be adaptively widened to ensure that the second packaging layer 3 is not easy to overflow. On the other hand, when planning to print a plurality of annular retaining walls 4, since adjacent annular retaining walls 4 are interconnected, the printing pattern is simplified, which reduces the printing difficulty and saves the printing processing time.

[0062] Reference Figure 5 Further, a buffer recess 4a is preset at the cross intersection of the mesh retaining wall structure, and the buffer recess 4a is preset on the surface of the mesh retaining wall structure. In this embodiment, the cross-sectional shape of the buffer recess 4a includes a circle, a polygon or other closed shapes, which are not limited here.

[0063] By arranging the buffer recess 4a in this way, on the one hand, the material for printing and processing the annular retaining wall 4 can be saved; on the other hand, when the total printing amount of the second packaging layer 3 exceeds the preset value during printing and processing, the excess material can be stored in the buffer recess 4a, and the packaging quality will not be adversely affected due to excessive printing material of the second packaging layer 3, thereby reducing the difficulty of printing and processing and ensuring the yield rate.

[0064] Reference Figure 6-Figure 8 , wherein the inner side surface of the annular retaining wall 4 is provided with a plurality of surface-increasing structures 5, and the plurality of surface-increasing structures 5 are arranged at intervals along the extension direction of the annular retaining wall 4. The surface-increasing structures 5 are used to increase the total area of ​​the inner wall of the annular retaining wall 4, thereby increasing the contact area between the annular retaining wall 4 and the second encapsulation layer 3, and improving the limiting ability of the second encapsulation layer 3.

[0065] It should be noted that a hydrophobic layer is also provided on the surface of the surface-enhancing structure 5 of the annular retaining wall 4 .

[0066] Reference Figure 6-Figure 8 Specifically, all the surface-increasing structures 5 are convex strips or concave grooves. In particular, all the surface-increasing structures 5 are convex strips or concave grooves, or part of the surface-increasing structures 5 include convex strips and another part include concave grooves.

[0067] Reference Figure 6 In this embodiment, the multiple surface-increasing structures 5 on the inner side of the annular retaining wall 4 all include grooves, and the length direction of the grooves is arranged perpendicular to the first packaging layer 2. Since the annular retaining wall 4 is processed by inkjet printing technology, both ends of the grooves are opened, and one end of the groove is blocked by the first packaging layer 2.

[0068] Reference Figure 7 In some embodiments, the plurality of surface-increasing structures 5 on the inner side of the annular retaining wall 4 all include convex strips, and the convex strips are arranged perpendicular to the first packaging layer 2 .

[0069] Reference Figure 8 In some embodiments, some of the surface-increasing structures 5 on the inner side surfaces of the annular retaining walls 4 are grooves, and the other parts are convex strips. The convex strips and the grooves are alternately arranged in the extending direction of the annular retaining walls 4.

[0070] By providing the convex strips and / or grooves on the inner wall of the annular retaining wall 4, the total area of ​​the inner side of the annular retaining wall 4 is increased, and the contact area between the annular retaining wall 4 and the second encapsulation layer 33 is increased. On the one hand, when the second encapsulation layer 3 is not yet solidified, the annular retaining wall 4 is used to limit the overflow of the second encapsulation layer 3; on the other hand, due to the provision of the convex strips and / or grooves, after the second encapsulation layer 3 is solidified, it is better combined with the annular retaining wall 4, and the second encapsulation layer 3 and the annular retaining wall 4 are more integrated, thereby improving the molding quality of the display panel.

[0071] Reference Figure 9-12 Furthermore, the orthographic projection of the protruding surface of the convex strip on the first packaging layer 2 is a plurality of line segments, at least one circular arc segment, or a combination of a line segment and at least one circular arc segment.

[0072] The orthographic projection of the groove wall of the groove on the first packaging layer 2 is a plurality of line segments, at least one circular arc segment, or a combination of at least one line segment and at least one circular arc segment.

[0073] It should be noted that, since the annular retaining wall 4 is formed by inkjet printing, the processing and forming of convex strips and grooves of various shapes can be easily achieved through printing pattern planning.

[0074] Specifically, the schematic diagram of the orthographic projection of the protruding surface of the convex strip on the first packaging layer 2 as multiple line segments can be referred to Fig. 9 .

[0075] The schematic diagram of the orthographic projection of the protruding surface of the convex strip on the first packaging layer 2 as at least one arc segment can be referred to Fig.10 and Fig.11 The schematic diagram of the orthographic projection of the protruding surface of the convex strip on the first packaging layer 2 as a single arc segment is as follows: Fig.10 The schematic diagram of the orthographic projection of the convex surface of the convex strip on the first packaging layer 2 as a combination of multiple arc segments is as follows: Fig.11 .

[0076] The schematic diagram of the orthographic projection of the convex surface of the convex strip on the first packaging layer 2 as a combination of a line segment and at least one arc segment can be referred to Fig.12 .

[0077] Since the annular retaining wall 4 is processed by inkjet printing, the specific shape of the annular retaining wall 4 and the shape of the inner side surface of the annular retaining wall 4 can be specifically set, and the contact area between part of the annular retaining wall 4 and the second packaging layer 3 can be specifically increased to meet the blocking requirements of the second packaging layer 3, and can meet the processing requirements of a variety of different display panels.

[0078] The display panel may be a circular panel, an elliptical panel or a polygonal panel, etc. Specifically, the display area 1a of the functional layer 1 is circular, elliptical or polygonal in shape. Since the second encapsulation layer 3 encapsulates the multiple pixel areas 1a1 of the display area 1a separately, the specific shape of the display panel does not affect the encapsulation structure.

[0079] Reference Fig.13 Furthermore, the pixel encapsulation display panel further includes a reinforcement structure 6. The reinforcement structure 6 includes a reinforcement recess 61 and a reinforcement protrusion 62.

[0080] The reinforcement recess 61 is formed on the surface of the first packaging layer 2, and the reinforcement protrusion 62 is integrally formed on the bottom surface of the annular retaining wall 4. The annular retaining wall 4 and the first packaging layer 2 are plug-fitted through the reinforcement recess 61 and the reinforcement protrusion 62.

[0081] With such arrangement, the reinforcement structure 6 improves the connection strength between the annular retaining wall 4 and the first packaging layer 2 , and improves the integrity of the annular retaining wall 4 and the first packaging layer 2 .

[0082] Specifically, the reinforcement recess 61 includes a hole or a groove, and correspondingly, the reinforcement protrusion 62 includes a rod-shaped member or a strip-shaped member.

[0083] In this embodiment, when the first packaging layer 2 is formed, a reinforcement recess 61 is prefabricated on its surface. When the annular retaining wall 4 is processed by inkjet printing technology, the printing material falls onto the surface of the first packaging layer 2 and fills the reinforcement recess 61 to form a reinforcement protrusion 62.

[0084] The embodiment of the present application provides a pixel encapsulation display panel, which first uses a first encapsulation layer 2 to fully cover and encapsulate the functional layer 1, and then uses multiple second encapsulation layers 3 to separately encapsulate multiple pixel areas 1a1 on the functional layer 1. On the one hand, multiple annular retaining walls 4 correspond to multiple pixel areas 1a1 respectively, and multiple second encapsulation layers 3 are respectively confined within multiple annular retaining walls 4 to encapsulate the pixel areas 1a1. Each second encapsulation layer 3 is independent, and the material forming the second encapsulation layer 3 in each annular retaining wall 4 is less, and it is easier to use the annular retaining wall 4 to limit the overflow of the second encapsulation layer 3. Compared with the second encapsulation layer 3 in the related art that encapsulates the functional layer 1 as a whole, this form of separate encapsulation is convenient for designing the width of the side wall of the annular retaining wall 4 to be smaller, so the width of the non-display area 1b required to be reserved for the functional layer 1 can also be designed to be narrower, which is reflected in the narrow edge width of the display panel, which meets the use requirements of the panel with a high screen ratio and narrow frame. In addition, the second encapsulation layer 3 encapsulates the pixel area 1a1, which also saves materials and reduces processing costs.

[0085] On the other hand, since the annular retaining wall 4 is arranged on the surface of the first encapsulation layer 2, compared with the technical form in the related art in which the first encapsulation layer 2 covers the annular retaining wall 4, the annular retaining wall 4 will not be widened due to the coverage of the first encapsulation layer 2, and the width of the side wall of the annular retaining wall 4 is narrower. Therefore, the width of the non-display area 1b reserved on the functional layer 1 can be designed to be ultra-narrow, and the layout requirements of the edge retaining wall can also be met. After the width of the non-display area 1b of the functional layer 1 is narrowed, it is specifically reflected in the narrower border width of the display panel, which meets the use requirements of panels with high screen-to-body ratio and narrow borders. In addition, since the annular retaining wall 4 is in direct contact with the second encapsulation layer 3 and limits the overflow of the second encapsulation layer 3, it is convenient to block the extension of the second encapsulation layer 3 by changing the material properties of the annular retaining wall 4, so as to avoid the failure of the second encapsulation layer 3.

[0086] Another embodiment of the present application provides a display device, including the pixel-encapsulated display panel as described above.

[0087] Another embodiment of the present application provides a display device. Since the display device includes the pixel-encapsulated display panel described above, the beneficial effects of the display device are consistent with the beneficial effects of the pixel-encapsulated display panel described above, which will not be repeated here.

[0088] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0089] It should be noted that, in this application, relational terms such as "first" and "second" 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 sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0090] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A pixel encapsulation display panel, characterized in that: It includes: A functional layer, the functional layer comprising a display area and a non-display area located outside the display area, the display area comprising a plurality of pixel areas, and the plurality of pixel areas are evenly spaced; A first encapsulation layer, wherein the first encapsulation layer covers the display area and the non-display area of ​​the functional layer; A plurality of annular retaining walls, each of which is disposed on the surface of the first encapsulation layer, each of which corresponds to a plurality of pixel regions one by one, and each of which is arranged at the periphery of each pixel region, wherein a portion of the sidewalls of the annular retaining walls at the distribution edge of the plurality of annular retaining walls has a positive projection on the functional layer falling on the non-display region; A plurality of second encapsulation layers, each of which covers the surface of the first encapsulation layer, and each of which is located in a plurality of annular retaining walls in a one-to-one correspondence, and the orthographic projections of the second encapsulation layers on the functional layer all fall on the pixel area corresponding to the second encapsulation layer, and the annular retaining walls limit the overflow of the second encapsulation layers; wherein, The plurality of annular retaining walls and the plurality of the second packaging layers are processed by inkjet printing.

2. The pixel encapsulation display panel according to claim 1, characterized in that: Adjacent annular retaining walls among the plurality of annular retaining walls are connected to each other to form a mesh retaining wall structure.

3. The pixel encapsulation display panel according to claim 2, characterized in that: A buffer recess is preset at the cross intersection of the mesh retaining wall structure, and the buffer recess is preset on the surface of the mesh retaining wall structure.

4. The pixel encapsulation display panel according to claim 1 or 2, characterized in that: The inner side surface of the annular retaining wall is provided with a plurality of surface-increasing structures, and the plurality of surface-increasing structures are arranged at intervals along the extending direction of the annular retaining wall.

5. The pixel encapsulation display panel according to claim 4, characterized in that: The surface-increasing structure includes convex strips or concave grooves, and a plurality of the surface-increasing structures are all the convex strips or the concave grooves, or, Some of the plurality of surface-enhancing structures include the convex strips, and another portion includes the concave grooves.

6. The pixel encapsulation display panel according to claim 5, characterized in that: The orthographic projection of the protruding surface of the protruding strip on the first encapsulation layer is a plurality of line segments, at least one circular arc segment, or a combination of a plurality of line segments and at least one circular arc segment; The orthographic projection of the groove wall of the groove on the first packaging layer is a plurality of line segments, at least one circular arc segment, or a combination of at least one line segment and at least one circular arc segment.

7. The pixel encapsulation display panel according to claim 1, characterized in that: A hydrophobic layer is provided on the surface of the annular retaining wall.

8. The pixel encapsulation display panel according to claim 1 or 2, characterized in that: Also included is a reinforcement structure, the reinforcement structure comprising: A reinforcement recess, wherein the reinforcement recess is provided on the surface of the first packaging layer; A reinforcement protrusion, wherein the reinforcement protrusion is integrally formed on the bottom surface of the annular retaining wall; wherein, The annular retaining wall and the first packaging layer are plug-fitted through the reinforcement recess and the reinforcement protrusion.

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

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