Display panel and display terminal

Abstract

The invention relates to a display panel and a display terminal. The display panel comprises a display area and functional areas arranged on at least one side of the display area, the display panel comprises a substrate and functional retaining walls, the functional retaining walls are arranged on the substrate and located in the functional areas, the functional retaining walls comprise first retaining walls and at least one second retaining wall, the first retaining walls define at least one containing cavity, and the second retaining walls define at least one containing cavity. The size of the opening of the accommodating cavity is larger than that of the pixel opening, and the second retaining wall is arranged in at least one accommodating cavity. Functional retaining walls are arranged on a functional layer and comprise the first retaining wall and the second retaining wall, the first retaining wall forms at least one containing cavity, and the containing cavity can be used for containing ink in ink-jet printing; the second retaining wall is arranged in the containing cavity and can adjust distribution of ink in the containing cavity, so that the drying speed of the ink in the edge area of the display area is close to the drying speed of the ink in the middle area of the display area, and uneven light emitting of the edge of the display panel is improved.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) display technology is a new display technology that has gradually attracted people's attention with its unique advantages such as low power consumption, high saturation, fast response time and wide viewing angle, and occupies a certain position in the field of panel display technology.

[0003] The light-emitting layer of an OLED device can be produced by evaporation and inkjet printing. The inkjet printing process has a high material utilization rate and does not require an expensive fine metal mask (FMM), and is widely used in the production of OLED devices.

[0004] The light-emitting layer material is ink, which is dried after inkjet printing to form a light-emitting layer. During the ink drying process, due to the difference in drying speed of the ink in the edge area and the ink in the middle area, uneven light emission (Mura) is easily generated at the edge of the display panel. Summary of the Invention

[0005] Embodiments of the present application provide a display panel and a display terminal to improve the technical problem of uneven light emission at the edges of the display panel after inkjet printing.

[0006] To achieve the above-mentioned object, according to a first aspect of the present application, there is provided a display panel comprising a display area and a functional area provided on at least one side of the display area, the display panel comprising:

[0007] substrate;

[0008] A functional retaining wall is arranged on the substrate and is located in the functional area. The functional retaining wall includes a first retaining wall and at least one second retaining wall. The first retaining wall encloses at least one accommodating cavity, and the second retaining wall is arranged in at least one of the accommodating cavities.

[0009] Pixel retaining walls are provided on the substrate, the pixel retaining walls are located in the display area, the pixel retaining walls include a first pixel wall extending along a first direction and a second pixel wall extending along a second direction, the first pixel wall and the second pixel wall define a plurality of pixel openings;

[0010] Wherein, the opening size of the accommodating cavity is larger than the size of each pixel opening.

[0011] Optionally, the accommodating cavity includes a corner cavity corresponding to a corner of the display panel and a middle cavity located between two adjacent corner cavities;

[0012] Wherein, the second retaining wall is located in the middle cavity.

[0013] Optionally, the length direction of the opening of the central cavity is parallel to the arrangement direction of the two adjacent corner cavities, and the width direction of the opening of the central cavity is perpendicular to the length direction of the opening of the central cavity;

[0014] A plurality of second retaining walls are provided in the middle cavity. The second retaining walls extend along the width direction of the opening of the middle cavity and are arranged along the length direction of the opening of the middle cavity.

[0015] Optionally, the central axis of the second retaining wall arranged along the second direction coincides with the first pixel wall, and the central axis of the second retaining wall arranged along the first direction coincides with the second pixel wall.

[0016] Optionally, a distance between two adjacent second blocking walls arranged along the second direction is equal to m times a distance between two adjacent first pixel walls arranged along the second direction;

[0017] The distance between two adjacent second blocking walls arranged along the first direction is equal to 3n times the distance between two adjacent second pixel walls arranged along the first direction, where m and n are both positive integers.

[0018] Optionally, a distance between two adjacent second retaining walls close to the corner cavity is greater than a distance between two adjacent second retaining walls away from the corner cavity.

[0019] Optionally, the width of the second barrier walls arranged along the second direction is equal to the width of the first pixel walls, and / or the width of the second barrier walls arranged along the first direction is equal to the width of the second pixel walls.

[0020] Optionally, the length of the second retaining wall is greater than half the width of the opening of the central cavity and less than the width of the opening of the central cavity.

[0021] Optionally, the first retaining wall includes a common wall, the central cavity and the corner cavity are connected via the common wall, and the length of the common wall is equal to the width of the opening of the central cavity.

[0022] Optionally, a luminescent material layer is provided in the accommodating cavity, and a thickness of the luminescent material layer in the corner cavity is greater than or equal to a thickness of the luminescent material layer in the middle cavity.

[0023] Optionally, the first retaining wall includes a first inner wall and a first outer wall extending along the outline of the display area;

[0024] Wherein, the second retaining wall is spaced apart from at least one of the first inner wall and the first outer wall.

[0025] Optionally, the second retaining wall is connected to the first outer wall, and the second retaining wall is spaced apart from the first inner wall.

[0026] Optionally, the pixel retaining wall and the functional retaining wall are arranged on the same layer, the height of the second pixel wall is greater than that of the first pixel wall, and the height of the functional retaining wall is equal to that of the second pixel wall.

[0027] According to a second aspect of the present application, a display terminal is provided, comprising the above-mentioned display panel.

[0028] In the display panel of the embodiment of the present application, a functional retaining wall is provided on the functional layer, and the functional retaining wall includes a first retaining wall and a second retaining wall. The first retaining wall forms at least one accommodating cavity, and the size of the opening of the accommodating cavity is larger than the size of the pixel opening. The accommodating cavity can be used to accommodate ink in inkjet printing; the second retaining wall is provided in the accommodating cavity, and the second retaining wall can adjust the distribution of the ink in the accommodating cavity, so that the drying speed of the ink in the edge area of ​​the display area is close to the drying speed of the ink in the middle area of ​​the display area, thereby improving the uneven luminescence at the edge of the display panel.

[0029] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0031] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0032] Figure 1 is a schematic top view of a display panel provided in an exemplary embodiment of the present disclosure;

[0033] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at B in the middle;

[0034] Figure 3 yes Figure 2 Schematic diagram of the cross-section structure at CC;

[0035] Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure at DD in the middle;

[0036] Figure 5 2 is a schematic structural diagram of a display terminal provided in an exemplary embodiment of the present disclosure.

[0037] Description of reference numerals:

[0038] 1-display panel; AA-display area; FA-functional area;

[0039] 10-Substrate;

[0040] 20 - Functional retaining wall; 21 - First retaining wall; 21a - Accommodation cavity; 211a - Corner cavity; 212a - Central cavity; 213 - First interior wall; 214 - First exterior wall; 215 - Common wall; 22 - Second retaining wall; 22a - Central axis;

[0041] 30-light-emitting layer; 31-light-emitting material layer; 32-anode; 33-cathode;

[0042] 40 - pixel retaining wall; 41 - first pixel wall; 42 - second pixel wall; 40a - pixel opening;

[0043] 50-thin film transistor;

[0044] 60-encapsulation layer; 61-inorganic layer; 62-organic layer;

[0045] 70-cover plate;

[0046] D1-first direction; D2-second direction;

[0047] s1 is the distance between two adjacent second blocking walls 22 arranged along the second direction D2; s2 is the distance between two adjacent first pixel walls 41 arranged along the second direction D2;

[0048] s3 - the distance between two adjacent second blocking walls 22 arranged along the first direction D1; s4 - the distance between two adjacent second pixel walls 42 arranged along the first direction D1;

[0049] h1-length of the second retaining wall 22; w1-width of the second retaining wall 22; h2-length of the common wall 215;

[0050] w3 - width of the first pixel wall 41; w4 - width of the second pixel wall 42;

[0051] s5 - width of the opening of the middle cavity 212a;

[0052] 2-Display terminal; 3-Terminal body. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only 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 those skilled in the art without creative work are within the scope of protection of the present application.

[0054] In order to achieve the above object, according to the first aspect of the present application, Figures 1 to 4 As shown, a display panel 1 is provided, including a display area AA and a functional area FA arranged on at least one side of the display area AA, the display panel 1 includes a substrate 10, a functional retaining wall 20 and a pixel retaining wall 40, the functional retaining wall 20 is arranged on the substrate 10, and is located in the functional area FA, the functional retaining wall 20 includes a first retaining wall 21 and at least one second retaining wall 22, the first retaining wall 21 encloses at least one accommodating cavity 21a, and the second retaining wall 22 is arranged in the at least one accommodating cavity 21a; the pixel retaining wall 40 is arranged on the substrate 10, and is located in the display area AA, the pixel retaining wall 40 includes a first pixel wall 41 extending along a first direction D1 and a second pixel wall 42 extending along a second direction D2, the first pixel wall 41 and the second pixel wall 42 define a plurality of pixel openings 40a, and the opening size of the accommodating cavity 21a is larger than the size of each pixel opening 40a.

[0055] The display panel 1 may be an OLED panel, a Mini-LED panel, a Micro-LED panel, etc.

[0056] like Figure 1 and Figure 2 As shown, the display panel 1 includes a display area AA and a functional area FA disposed around the display area AA. The display area AA may be provided with a plurality of sub-pixels, each of which may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, thereby achieving color display. One sub-pixel corresponds to one pixel opening 40a.

[0057] The substrate 10 may be made of a rigid material or a flexible material. The rigid material may be glass, quartz, or silicon wafer. The flexible material may be one of polyimide (PI), polycarbonate (PC), polynorbornene (PNB), and polyethylene terephthalate (PET).

[0058] like Figure 4 As shown, a driving circuit layer is further provided on the substrate 10 , and the driving circuit layer includes a plurality of thin film transistors 50 , and the thin film transistors 50 are used to control the light emission of sub-pixels.

[0059] like Figure 2 and Figure 4As shown, the pixel barrier 40 is disposed in the display area AA, and the pixel barrier 40 includes a first pixel wall 41 extending along a first direction D1 and a second pixel wall 42 extending along a second direction D2.

[0060] The first direction D1 and the second direction D2 are arranged at an angle.

[0061] In some embodiments, the included angle between the first direction D1 and the second direction D2 may be an acute angle, a right angle, or an obtuse angle. Figure 2 In the description, the angle between the first direction D1 and the second direction D2 is taken as a right angle as an example.

[0062] like Figure 4 As shown, because the first pixel wall 41 and the second pixel wall 42 extend in different directions, two adjacent first pixel walls 41 and two adjacent second pixel walls 42 define a pixel opening 40a. During the inkjet printing process, ink is printed into the corresponding pixel opening 40a. After the ink dries, it forms a luminescent material layer 31, which can emit light, thereby realizing display.

[0063] like Figure 4 As shown, a light-emitting layer 30 is provided on the driving circuit layer. The light-emitting layer 30 includes multiple light-emitting units, with each light-emitting unit corresponding to each pixel opening 40a. The light-emitting unit includes an anode 32, a light-emitting material layer 31, and a cathode 33 stacked in sequence. The anode 32 provides holes, and the cathode 33 provides electrons. The holes and electrons recombine in the light-emitting material layer 31 to emit light.

[0064] In some embodiments, the material of the anode 32 may be a metal or metal oxide material, such as a stack of one or more of indium tin oxide, indium zinc oxide, silver, and the like.

[0065] In some embodiments, the material of the cathode 33 can be an alloy of one or more of silver, aluminum, magnesium, etc.

[0066] In some embodiments, as Figure 4 As shown, the drain of the thin film transistor 50 may be electrically connected to the anode 32 , thereby providing a driving voltage to the anode 32 .

[0067] In some embodiments, as Figure 4 As shown, the cathode 33 can be provided in an entire layer to provide voltage to multiple sub-pixels.

[0068] like Figure 4As shown, an encapsulation layer 60 is also provided on the light-emitting layer 30. The encapsulation layer 60 is provided on the side of the cathode 33 layer facing away from the substrate 10. The encapsulation layer 60 may be formed by alternatingly stacking one or more organic layers 62 and one or more inorganic layers 61. For example, the organic layer 62 may be a single layer or multiple layers formed from any one of polyethylene terephthalate, polyimide, polycarbonate, epoxy resin, polyethylene, and polyacrylate. The inorganic layer 61 may be a single layer or multiple layers of a metal oxide or metal nitride, such as silicon nitride, aluminum oxide, silicon oxide, etc.

[0069] like Figure 4 As shown, a cover plate 70 may be further provided on the encapsulation layer 60. The cover plate 70 may be made of a polyimide material, so that the display panel 1 has good bending performance. The cover plate 70 may also be made of glass or the like.

[0070] The luminescent material layer 31 of the present application is manufactured using an inkjet printing process. Specifically, ink containing luminescent materials and the like is printed into the pixel opening 40a by a printing device to form a pixel array, and the luminescent material layer 31 is formed after the ink dries. Sub-pixels of different colors correspond to different inks. Since the drying speed of the ink in the edge area of ​​the display area AA of the display panel 1 is different from that of the ink in the middle area, the flatness of the luminescent material layer 31 after drying is different. When the display panel 1 displays a picture, the brightness, chromaticity, etc. of the sub-pixels in the edge area of ​​the display area AA are inconsistent with the brightness and chromaticity of the sub-pixels in the middle area of ​​the display area AA, resulting in uneven luminescence.

[0071] In the embodiments of the present application, Figures 1 to 3 As shown, a functional area FA is provided on at least one side of the display area AA, and a functional retaining wall 20 is provided in the functional area FA. The functional retaining wall 20 can form an accommodating cavity 21 a for accommodating ink.

[0072] It should be understood that the ink in the functional area FA does not emit light after drying, that is, the functional area FA is not used for display. In the display area AA, a single color of ink is disposed within the pixel opening 40a corresponding to each sub-pixel. In the functional area FA, the accommodating cavity 21a can contain multiple colors of ink, that is, the ink in the accommodating cavity 21a is a mixture of different colors.

[0073] The functional retaining wall 20 includes a first retaining wall 21 and a second retaining wall 22. The first retaining wall 21 encloses at least one accommodating cavity 21a, and the second retaining wall 22 is disposed in the at least one accommodating cavity 21a.

[0074] The opening size of the accommodating cavity 21a is larger than the size of each pixel opening 40a. Through the above configuration, the accommodating cavity 21a can form a larger accommodating space for accommodating more ink.

[0075] It should be noted that the first retaining walls 21 enclose the accommodating cavity 21a, which means that the first retaining walls 21 are connected end to end to form a closed pattern, and the area inside the closed pattern is used to accommodate ink. The shape of the accommodating cavity 21a enclosed by the first retaining walls 21 can match the formation of the functional area FA.

[0076] In some embodiments, the first retaining wall 21 may form a receiving cavity 21 a. For example, the first retaining wall 21 may include two retaining walls surrounding the display area AA, with a receiving cavity 21 a formed between the two retaining walls.

[0077] In some embodiments, as Figure 1 As shown, the first retaining wall 21 can form multiple accommodating cavities 21a. For example, one accommodating cavity 21a is formed on each side of the display area AA. When the display area AA is rectangular, the first retaining wall 21 can form four accommodating cavities 21a corresponding to the four sides of the rectangle.

[0078] In other embodiments, the number of the accommodating cavities 21 a formed by the first retaining wall 21 can be set as needed, and this application does not impose any limitation on this.

[0079] like Figure 1 and Figure 3 As shown, a second retaining wall 22 is disposed within at least one accommodating cavity 21a. The second retaining wall 22 protrudes from the bottom wall of the accommodating cavity 21a and can adjust the distribution of ink, thereby distributing the ink within the accommodating cavity 21a as desired. By providing the second retaining wall 22, the distribution of ink within the accommodating cavity 21a is adjusted, so that the drying rate of the ink in the sub-pixels at the edge of the display area AA is similar to that of the ink in the central area of ​​the display area AA. This results in a smoother luminescent material layer 31 at the edge of the display area AA, thereby improving the uneven luminescence at the edge of the display panel 1.

[0080] It should be noted that the present application can omit the virtual sub-pixels (dummy pixels) in the related art. Virtual sub-pixels refer to sub-pixels set in the peripheral area of ​​the display area AA. The virtual sub-pixels are arranged in the same manner as the sub-pixels in the display area AA. The difference between virtual sub-pixels and sub-pixels is that the virtual sub-pixels themselves do not participate in the light emission. Virtual sub-pixels can improve the uneven light emission of sub-pixels in the edge area of ​​the display area AA. However, setting virtual sub-pixels will occupy the width of the peripheral border of the display area AA, resulting in the display panel 1 being unable to achieve a narrower border. In the present application, by omitting the virtual sub-pixels, and setting at least one accommodating cavity 21a in the functional area FA, and setting a second retaining wall 22 in the accommodating cavity 21a, the uneven light emission of sub-pixels in the edge area of ​​the display area AA can be improved through the accommodating cavity 21a, and a narrower border can be achieved.

[0081] In some embodiments, the material of the functional retaining wall 20 can be any one of polyimide, epoxy acrylate, silicone-based materials, etc.

[0082] In some embodiments, the material of the second retaining wall 22 may be the same as that of the first retaining wall 21 , so that the functional retaining wall 20 may be formed using the same patterning process, thereby simplifying the manufacturing process of the display panel 1 .

[0083] In other embodiments, the material of the second retaining wall 22 may be different from that of the first retaining wall 21 .

[0084] In some embodiments, the height of the first retaining wall 21 may be the same as the height of the second retaining wall 22 , thereby simplifying the manufacturing process of the display panel 1 .

[0085] In other embodiments, the height of the first retaining wall 21 may be greater than the height of the second retaining wall 22 , thereby increasing the volume of ink that can be accommodated.

[0086] Alternatively, as Figure 1 and Figure 2 As shown, the accommodating cavity 21a includes a corner cavity 211a corresponding to the corner of the display panel 1 and a middle cavity 212a located between two adjacent corner cavities 211a; wherein the second retaining wall 22 is located in the middle cavity 212a.

[0087] The corner of the display panel 1 refers to the angle formed by two adjacent edges of the display panel 1. The corner cavity 211a is the portion of the accommodating chamber 21a corresponding to the corner. The corner cavity 211a is separated from the central cavity 212a, meaning that ink within the corner cavity 211a and the central cavity 212a do not flow into each other. The corner cavity 211a can be formed by the first retaining wall 21, while the central cavity 212a can be formed by additional first retaining walls 21.

[0088] In some embodiments, the corner cavity 211 a and the middle cavity 212 a are spaced apart from each other, which means that the first retaining wall 21 of the corner cavity 211 a and the first retaining wall 21 of the middle cavity 212 a are not shared.

[0089] In some embodiments, as Figure 1 and Figure 2 As shown, the corner cavity 211 a is connected to the middle cavity 212 a , which means that the area close to the corner cavity 211 a and the middle cavity 212 a can share the first retaining wall 21 .

[0090] Alternatively, as Figure 1 and Figure 2As shown, the length direction of the opening of the middle cavity 212a is parallel to the arrangement direction of the two adjacent corner cavities 211a, and the width direction of the opening of the middle cavity 212a is perpendicular to the length direction of the opening of the middle cavity 212a; a plurality of second retaining walls 22 are arranged in a middle cavity 212a, and the second retaining walls 22 extend along the width direction of the opening of the middle cavity 212a and are arranged along the length direction of the opening of the middle cavity 212a.

[0091] The length of the opening of the central cavity 212a is the length of the opening of the central cavity 212a, and the width of the opening of the central cavity 212a is the width s5 of the opening of the central cavity 212a. The length of the opening of the central cavity 212a is greater than the width s5 of the opening of the central cavity 212a.

[0092] The second retaining wall 22 extends along the width direction of the opening of the middle cavity 212a, which means that the length direction of the second retaining wall 22 is parallel to the width direction of the opening of the middle cavity 212a, and the size of the second retaining wall 22 in the width direction of the opening of the middle cavity 212a is greater than the size of the second retaining wall 22 in the length direction of the opening of the middle cavity 212a.

[0093] The plurality of second retaining walls 22 extend along the width direction of the opening of the middle cavity 212a and are arranged along the length direction of the opening of the middle cavity 212a, thereby separating the ink between two adjacent second retaining walls 22 and adjusting the distribution of the ink.

[0094] Optionally, the first retaining wall 21 includes a shared wall 215, the central cavity 212a and the corner cavity 211a are connected by the shared wall 215, and the first inner wall 213 and the first outer wall 214 are both connected to the shared wall 215. The provision of the shared wall 215 can prevent the corner cavity 211a and the central cavity 212a from being separated by a gap, thereby preventing the gap from being filled with ink and thus failing to improve the uneven light emission of sub-pixels in the edge region of the display area AA corresponding to the gap region.

[0095] Because ink dries faster in the corners than in other areas of the functional area FA, more ink is required in the corner cavity 211a, resulting in a drying rate similar to that of the central cavity. By placing the second retaining wall 22 in the central cavity 212a rather than in the corner cavity 211a, the second retaining wall 22 does not occupy space within the corner cavity 211a, thereby reducing the volume of ink within the corner cavity 211a.

[0096] In some embodiments, as Figure 2As shown, the length h2 of the common wall 215 is equal to the width s5 of the opening of the central cavity 212a. In other words, the extension direction of the common wall 215 is parallel to the width direction of the opening of the central cavity 212a, and the width direction of the common wall 215 is parallel to the length direction of the opening of the central cavity 212a.

[0097] Optionally, combine Figure 2 and Figure 3 A luminescent material layer 31 is provided in the accommodating cavity 21a, and the thickness of the luminescent material layer 31 of the corner cavity 211a is greater than or equal to the thickness of the luminescent material layer 31 of the middle cavity 212a.

[0098] After the ink dries, it forms a luminescent material layer 31. Because more ink is contained within the corner cavities 211a, the thickness of the luminescent material layer 31 formed after the ink dries within the corner cavities 211a is thicker than that within the central cavities 212a. This arrangement slows down the drying speed of the ink at the corners corresponding to the display area AA, bringing the drying speed of the ink at the edge regions of the display area AA corresponding to the corner cavities 211a closer to that of the ink at the edge regions of the display area AA corresponding to the central cavities 212a, thereby further improving uneven luminescence.

[0099] Alternatively, as Figure 1 and Figure 2 As shown, the first retaining wall 21 includes a first inner wall 213 and a first outer wall 214 extending along the outline of the display area AA, and a central cavity 212a is formed between the first inner wall 213 and the first outer wall 214. There are multiple second retaining walls 22, and the multiple second retaining walls 22 are arranged along the extension direction of the first outer wall 214. The second retaining walls 22 are spaced apart from one of the first inner wall 213 and / or the first outer wall 214.

[0100] The first inner wall 213 and the first outer wall 214 both extend along the outline of the display area AA, thereby increasing the volume of the middle cavity 212a as much as possible without increasing the area of ​​the functional area FA of the display panel 1, thereby accommodating more ink.

[0101] A central cavity 212a is formed between the first inner wall 213 and the first outer wall 214. The ends of the first inner wall 213 and the first outer wall 214 are connected by another portion of the first retaining wall 21. A second retaining wall 22 is disposed within the central cavity 212a and arranged along the extension of the first outer wall 214. This arrangement ensures uniform distribution of ink within the central cavity 212a, thereby further facilitating the drying of ink in the edge regions of the display area AA corresponding to the central cavity 212a and reducing uneven illumination in the edge regions of the display area AA corresponding to the central cavity 212a.

[0102] In some embodiments, the second retaining wall 22 is spaced apart from both the first inner wall 213 and the first outer wall 214. In other words, the second retaining wall 22 is not connected to either the first inner wall 213 or the first outer wall 214.

[0103] In some embodiments, the second retaining wall 22 is spaced apart from the first inner wall 213 and connected to the first outer wall 214. In other words, the second retaining wall 22 is close to and connected to the first outer wall 214, and the end of the second retaining wall 22 close to the first inner wall 213 is spaced apart from the first inner wall 213.

[0104] In some embodiments, the second retaining wall 22 is connected to the first inner wall 213 and spaced apart from the first outer wall 214. In other words, the end of the second retaining wall 22 closest to the first inner wall 213 is connected to the first inner wall 213, while the other end of the second retaining wall 22 is not connected to the first outer wall 214.

[0105] Alternatively, as Figure 1 and Figure 2 As shown, the second retaining wall 22 is connected to the first outer wall 214 and spaced apart from the first inner wall 213. This means that the side of the central cavity 212a near the first outer wall 214 is separated by the second retaining wall 22, while the side of the central cavity 212a near the first inner wall 213 is not separated by the second retaining wall 22. Because the ink in the area of ​​the central cavity 212a near the first outer wall 214 dries faster than the ink in the area of ​​the central cavity 212a near the first inner wall 213, the side of the central cavity 212a near the first inner wall 213 is not separated by the second retaining wall 22. When the ink in the central cavity 212a near the first outer wall 214 evaporates, the ink in the central cavity 212a near the first inner wall 213 can flow to replenish the area of ​​the central cavity 212a near the first outer wall 214, thereby ensuring uniform ink distribution within the central cavity 212a. Through the above configuration, the drying speed of the ink of the sub-pixels in the edge region of the display area AA corresponding to the middle cavity 212 a can be further balanced, thereby further improving uneven light emission.

[0106] Alternatively, as Figures 2 to 4 As shown, the pixel retaining wall 40 is provided on the same layer as the functional retaining wall 20. That is, the pixel retaining wall 40 can be made of the same material as the functional retaining wall 20 and formed through the same patterning process, thereby simplifying the manufacturing process of the display panel 1.

[0107] In some embodiments, the first retaining wall 21 extends in a first direction D1 and a second direction D2. That is, a portion of the first retaining wall 21 may extend along the first direction D1, and another portion of the first retaining wall 21 may extend along the second direction D2.

[0108] In some embodiments, the second retaining wall 22 extends in the first direction D1 and the second direction D2. That is, a portion of the second retaining wall 22 may extend along the first direction D1, and another portion of the second retaining wall 22 may extend along the second direction D2.

[0109] Alternatively, as Figure 3 As shown, the height of the second pixel wall 42 is greater than that of the first pixel wall 41 , and the height of the functional retaining wall 20 is equal to that of the second pixel wall 42 .

[0110] In some embodiments, the pixel retaining wall 40 may be a line bank. The height of the second pixel wall 42 is greater than the height of the first pixel wall 41. The first pixel wall 41 may be disposed between two adjacent luminescent material layers 31 of the same color, that is, the first pixel wall 41 may be disposed between two adjacent sub-pixels of the same color. The second pixel wall 42 may be disposed between two adjacent luminescent material layers 31 of different colors, that is, the second pixel wall 42 may be disposed between two adjacent sub-pixels of different colors. By setting the height of the second pixel wall 42 to be greater than the height of the first pixel wall 41, it is possible to prevent the ink of the luminescent material layers 31 of different colors from flowing over the second pixel wall 42 and causing color mixing; and since the height of the first pixel wall 41 is lower than that of the second pixel wall 42, the ink of the luminescent material layers 31 of the same color can flow to each other, thereby making the ink amounts of adjacent sub-pixels of the same color close, thereby improving the consistency of the thickness of the luminescent material layer 31.

[0111] The height of the functional retaining wall 20 is the same as that of the second pixel wall 42, so the functional retaining wall 20 and the second pixel wall 42 can be formed using the same patterning process, simplifying the manufacturing process of the display panel 1. The patterning process includes steps such as coating photoresist, exposure, and development.

[0112] Alternatively, as Figure 2 As shown, the central axis 22 a of the second retaining wall 22 arranged along the second direction D2 coincides with the first pixel wall 41 , and the central axis 22 a of the second retaining wall 22 arranged along the first direction D1 coincides with the second pixel wall 42 .

[0113] The central axis 22 a of the second retaining wall 22 refers to the center line of the second retaining wall 22 in the extension direction, that is, the direction of the central axis 22 a is parallel to the extension direction of the second retaining wall 22 and is located in the middle area of ​​the second retaining wall 22 .

[0114] In some embodiments, multiple second retaining walls 22 within a central cavity 212a are arranged along the second direction D2, with the central axis 22a of each second retaining wall 22 coinciding with a first pixel wall 41. This arrangement allows the area between the second retaining walls 22 to correspond to the ink area of ​​the sub-pixel, thereby aligning the ink distribution in the functional area FA with that in the display area AA, further improving uneven illumination of the sub-pixels at the edge of the display area AA.

[0115] In some embodiments, multiple second retaining walls 22 within a central cavity 212a are arranged along the first direction D1, with the central axis 22a of each second retaining wall 22 coinciding with the second pixel wall 42. This arrangement allows the area between the second retaining walls 22 to correspond to the ink area of ​​the sub-pixel, thereby aligning the ink distribution in the functional area FA with that in the display area AA, further improving the uneven illumination of the sub-pixels at the edge of the display area AA.

[0116] Optionally, the spacing s1 between two adjacent second retaining walls 22 arranged along the second direction D2 is equal to m times the spacing s2 between two adjacent first pixel walls 41 arranged along the second direction D2; and the spacing s3 between two adjacent second retaining walls 22 arranged along the first direction D1 is equal to 3n times the spacing s4 between two adjacent second pixel walls 42 arranged along the first direction D1, where m and n are both positive integers. In other words, the spacing s1 between two adjacent second retaining walls 22 arranged along the second direction D2 is equal to the length of one or more sub-pixels. The spacing s3 between two adjacent second retaining walls 22 arranged along the first direction D1 is equal to 3n times the width of a sub-pixel. The length of a sub-pixel refers to the size of the sub-pixel in the second direction D2, and the width of a sub-pixel refers to the size of the sub-pixel in the first direction D1.

[0117] In the embodiments of the present application, the spacing s1 between two adjacent second retaining walls 22 arranged along the second direction D2 refers to the distance between the central axes 22a of the two adjacent second retaining walls 22 arranged along the second direction D2. The spacing s2 between two adjacent first pixel walls 41 arranged along the second direction D2 refers to the distance between the central axes 22a of the two adjacent first pixel walls 41 arranged along the second direction D2. The spacing s3 between two adjacent second retaining walls 22 arranged along the first direction D1 refers to the distance between the central axes 22a of the two adjacent second retaining walls 22 arranged along the first direction D1. The spacing s4 between two adjacent second pixel walls 42 arranged along the first direction D1 refers to the distance between the central axes 22a of the two adjacent second pixel walls 42 arranged along the first direction D1.

[0118] It should be noted that, since two adjacent first pixel walls 41 and two adjacent second pixel walls 42 define the pixel opening 40a, s2 is the length of the sub-pixel, and s4 is the width of the sub-pixel, the length of the sub-pixel is greater than the width of the sub-pixel.

[0119] In some embodiments, the values ​​of m and n may be the same, for example, both m and n are 1. In this case, s1 = s2, and s3 = 3*s4.

[0120] In other embodiments, the values ​​of m and n may be different, for example, m is 1 and n is 2. In this case, s1 = s2, and s3 = 6*s4.

[0121] In some embodiments, the length of a sub-pixel can be equal to the width of a pixel, so that the distance s1 between two adjacent second retaining walls 22 arranged along the second direction D2 is equal to the distance s3 between two adjacent second retaining walls 22 arranged along the first direction D1, that is, s1=s3, further improving the uniformity of ink distribution in the middle cavity 212a corresponding to the two adjacent sides, so that the drying speed of the ink corresponding to the two adjacent sides in the edge area of ​​the display area AA is close, further improving the uneven luminescence in the edge area of ​​the display area AA.

[0122] Optionally, the spacing between two adjacent second retaining walls 22 near the corner cavity 211a is greater than the spacing between two adjacent second retaining walls 22 farther from the corner cavity 211a. This means that the second retaining walls 22 in the central cavity 212a can be arranged unevenly, with the spacing between two adjacent second retaining walls 22 near the corner cavity 211a being greater and more sparsely distributed, while the spacing between two adjacent second retaining walls 22 farther from the corner cavity 211a being smaller and more densely distributed. This arrangement increases the ink capacity of the central cavity 212a near the corner cavity 211a, thereby slowing the drying of the ink around the corner cavity 211a.

[0123] Optionally, the width w1 of the second retaining wall 22 arranged along the second direction D2 is equal to the width w3 of the first pixel wall 41, and / or the width w1 of the second retaining wall 22 arranged along the first direction D1 is equal to the width w4 of the second pixel wall 42. By setting the width w3 of the second retaining wall 22 and the first pixel wall 41 extending in the same direction to be the same, the ink drying speed in the functional area FA can be made close to the ink drying speed in the display area AA.

[0124] Optionally, the length h1 of the second retaining wall 22 is greater than half of the width s5 of the opening of the central cavity 212a and less than the width s5 of the opening of the central cavity 212a.

[0125] like Figure 2As shown, in the second direction D2, corner cavity 211a corresponds to at least one sub-pixel, i.e., the opening size of corner cavity 211a is larger than the size of pixel opening 40a. Furthermore, in the first direction D1, corner cavity 211a corresponds to at least three sub-pixels. This arrangement allows at least one pixel at a corner to be surrounded by corner cavity 211a in both the length and width directions, thereby slowing the drying speed of ink in the corresponding corner pixel in the edge region of display area AA and improving uneven light emission at the corner in the edge region of display area AA.

[0126] In some embodiments, the shared wall 215 extends in a direction perpendicular to the first direction D1 or the second direction D2, so that the shared wall 215 and the first pixel wall 41 or the second pixel wall 42 extend in the same direction, thereby making the distribution of ink in the corner cavity 211a close to the distribution of ink at the corresponding corner in the edge area of ​​the display area AA, and further making the drying speed of the ink in the corner cavity 211a close to the drying speed of the ink at the corresponding corner in the edge area of ​​the display area AA, thereby improving uneven light emission.

[0127] In some embodiments, the central axis 22a of the shared wall 215 overlaps with the outermost first pixel wall 41 in the display area AA. Alternatively, the central axis 22a of the shared wall 215 overlaps with the third second pixel wall 42 in the direction from the outermost side of the display area AA toward the center of the display area AA. This further aligns the distribution of ink within the corner cavity 211a with the distribution of ink at the corresponding corner in the edge region of the display area AA, thereby reducing uneven light emission.

[0128] According to the second aspect of this application, Figure 5 As shown, a display terminal 2 is provided, comprising the above-mentioned display panel 1.

[0129] In this embodiment, if Figure 5 As shown, the display terminal 2 includes a display panel 1 and a terminal body 3, and the display panel 1 and the terminal body 3 are combined into one body.

[0130] In this embodiment, the display terminal 2 can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, or a navigator.

[0131] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0132] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0133] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0134] The above description is merely a preferred embodiment of the present application and does not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display panel, characterized in that: The display panel comprises a display area and a functional area provided on at least one side of the display area, wherein the display panel comprises: substrate; A functional retaining wall is provided on the substrate, the functional retaining wall is located in the functional area, the functional retaining wall includes a first retaining wall and at least one second retaining wall, the first retaining wall encloses at least one accommodating cavity, and the second retaining wall is provided in at least one accommodating cavity; Pixel blocking walls are provided on the substrate and located in the display area, the pixel blocking walls comprising a first pixel wall extending along a first direction and a second pixel wall extending along a second direction, the first pixel wall and the second pixel wall defining a plurality of pixel openings; Wherein, the opening size of the accommodating cavity is larger than the size of each pixel opening.

2. The display panel according to claim 1, wherein: The accommodating cavity includes a corner cavity corresponding to a corner of the display panel and a middle cavity located between two adjacent corner cavities; Wherein, the second retaining wall is located in the middle cavity.

3. The display panel according to claim 2, wherein: The length direction of the opening of the middle cavity is parallel to the arrangement direction of the two adjacent corner cavities, and the width direction of the opening of the middle cavity is perpendicular to the length direction of the opening of the middle cavity; A plurality of second retaining walls are provided in the middle cavity. The second retaining walls extend along the width direction of the opening of the middle cavity and are arranged along the length direction of the opening of the middle cavity.

4. The display panel according to claim 3, wherein: The central axis of the second retaining wall arranged along the second direction coincides with the first pixel wall, and the central axis of the second retaining wall arranged along the first direction coincides with the second pixel wall.

5. The display panel according to claim 4, wherein: The distance between two adjacent second blocking walls arranged along the second direction is equal to m times the distance between two adjacent first pixel walls arranged along the second direction; The distance between two adjacent second blocking walls arranged along the first direction is equal to 3n times the distance between two adjacent second pixel walls arranged along the first direction, where m and n are both positive integers.

6. The display panel according to claim 5, wherein: The distance between two adjacent second retaining walls close to the corner cavity is greater than the distance between two adjacent second retaining walls away from the corner cavity.

7. The display panel according to claim 4, wherein: The width of the second barrier walls arranged along the second direction is equal to the width of the first pixel walls, and / or the width of the second barrier walls arranged along the first direction is equal to the width of the second pixel walls.

8. The display panel according to claim 3, wherein: The length of the second retaining wall is greater than half of the width of the opening of the central cavity and less than the width of the opening of the central cavity.

9. The display panel according to claim 3, wherein: The first retaining wall includes a common wall, the middle cavity and the corner cavity are connected by the common wall, and the length of the common wall is equal to the width of the opening of the middle cavity.

10. The display panel according to claim 2, wherein: A luminescent material layer is provided in the accommodating cavity, and a thickness of the luminescent material layer in the corner cavity is greater than or equal to a thickness of the luminescent material layer in the middle cavity.

11. The display panel according to claim 2, wherein: The first retaining wall includes a first inner wall and a first outer wall extending along the outline of the display area; Wherein, the second retaining wall is spaced apart from at least one of the first inner wall and the first outer wall.

12. The display panel according to claim 11, wherein: The second retaining wall is connected to the first outer wall, and the second retaining wall is spaced apart from the first inner wall.

13. The display panel according to any one of claims 1 to 12, characterized in that: The pixel retaining wall and the functional retaining wall are arranged on the same layer, the height of the second pixel wall is greater than that of the first pixel wall, and the height of the functional retaining wall is equal to that of the second pixel wall.

14. A display terminal, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 13.

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