CN117529145A - Display panel and display terminal - Google Patents

Display panel and display terminal Download PDF

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Publication number
CN117529145A
CN117529145A CN202311161908.6A CN202311161908A CN117529145A CN 117529145 A CN117529145 A CN 117529145A CN 202311161908 A CN202311161908 A CN 202311161908A CN 117529145 A CN117529145 A CN 117529145A
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CN
China
Prior art keywords
groove
sub
pixel
display panel
substrate
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Pending
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CN202311161908.6A
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Chinese (zh)
Inventor
尚雨佳
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TCL Huaxing Photoelectric Technology Co Ltd
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TCL Huaxing Photoelectric Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TCL Huaxing Photoelectric Technology Co Ltd filed Critical TCL Huaxing Photoelectric Technology Co Ltd
Priority to CN202311161908.6A priority Critical patent/CN117529145A/en
Publication of CN117529145A publication Critical patent/CN117529145A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks

Abstract

The application discloses a display panel and a display terminal, wherein the display panel comprises a substrate, a pixel definition layer and a luminescent material layer, wherein the pixel definition layer is arranged on the substrate, the pixel definition layer is provided with a plurality of pixel openings, and the pixel openings expose out of the substrate; the luminescent material layer is arranged in the pixel opening; the substrate is provided with a plurality of grooves, the grooves are positioned in the edge area of the pixel opening, the side walls of the grooves are adjacent to the pixel definition layer, and the luminous material layer is further filled in the grooves. By arranging the grooves in the edge area of the pixel opening, when the luminescent material layer flows from the middle area of the pixel opening to the edge area, the luminescent material layer can be accommodated by the grooves in the edge area, and the surface of the luminescent material layer in the edge area is prevented from protruding, so that the surface of the film layer of the sub-pixel is uniform.

Description

Display panel and display terminal
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display terminal.
Background
The OLED display panel can be manufactured by using an emerging Ink Jet Print (IJP) process, and compared with the conventional evaporation process, the utilization rate of the ink jet printing material is over 90%, and high-precision printing can be realized only by controlling the precision of the spray head, so that the OLED display panel occupies an important position in the manufacture of the OLED display panel.
After the sub-pixels are printed by adopting ink jet, when the sub-pixels are dried in a vacuum environment, the drying rate of the single sub-pixels is inconsistent, and the ink in the peripheral area of the sub-pixels volatilizes fast, so that the ink in the middle area flows to the peripheral area, and a coffee ring effect is generated. The coffee ring effect can cause uneven surface of the film layer of the sub-pixel, and the display effect is affected.
Thus, there is a need to improve the above technical problems.
Disclosure of Invention
The application provides a display panel and a display terminal to solve the uneven problem of the membrane layer surface of sub-pixel that produces when adopting the inkjet printing to prepare the display panel.
In order to solve the technical problems, the technical scheme provided by the application is as follows:
the application provides a display panel, the display panel includes:
a substrate;
the pixel definition layer is arranged on the substrate, and is provided with a plurality of pixel openings, and the pixel openings expose the substrate;
the luminescent material layer is arranged in the pixel opening;
the substrate is provided with a plurality of grooves, the grooves are positioned in the edge area of the pixel opening, the side walls of the grooves are adjacent to the pixel definition layer, and the luminous material layer is further filled in the grooves.
In the display panel of the application, the pixel defining layer comprises a first retaining wall and a second retaining wall which extend in a crossing manner, and the first retaining wall and the second retaining wall surround to define a pixel opening;
the groove comprises a first sub-groove, the first sub-groove extends along the extending direction of the first retaining wall, and the side wall of the first sub-groove is adjacent to the first retaining wall.
In the display panel of the application, the groove further comprises a second sub-groove, the second sub-groove extends along the extending direction of the second retaining wall, the side wall of the second sub-groove is adjacent to the second retaining wall, and the depth of the first sub-groove is greater than or equal to that of the second sub-groove in the direction perpendicular to the display surface.
In the display panel of the application, the pixel defining layer comprises a first retaining wall and a second retaining wall which extend in a crossing manner, and the first retaining wall and the second retaining wall surround to define a pixel opening;
the groove comprises a first sub groove and a second sub groove, wherein the first sub groove extends along the extending direction of the first retaining wall, the side wall of the first sub groove is adjacent to the first retaining wall, the second sub groove extends along the extending direction of the second retaining wall, the side wall of the second sub groove is adjacent to the second retaining wall, and the depth of the first sub groove is equal to the depth of the second sub groove in the direction perpendicular to the display surface.
In the display panel of the present application, the first sub-groove and the second sub-groove communicate.
In the display panel of the present application, the depth of the groove in the direction perpendicular to the display surface gradually increases in the direction from the middle region of the pixel opening to the edge region of the pixel opening.
In the display panel of the present application, the display panel includes:
the plurality of blocking columns are arranged on the substrate, the blocking columns are positioned in the pixel openings, and orthographic projection of the blocking columns on the substrate is not overlapped with the grooves.
In the display panel of the application, the barrier columns extend along the direction perpendicular to the display surface, and one ends of the barrier columns, which are far away from the substrate, protrude from the luminescent material layer.
In the display panel of the application, the substrate comprises a base plate and an anode layer, the anode layer is arranged on one side of the base plate close to the luminescent material layer, the groove is arranged on the anode layer, and the depth of the groove is smaller than the thickness of the anode layer in the direction perpendicular to the display surface.
The application also provides a display terminal, which comprises the display panel.
The beneficial effects are that: the application discloses a display panel and a display terminal. The display panel comprises a substrate, a pixel definition layer and a luminescent material layer, wherein the pixel definition layer is arranged on the substrate, the pixel definition layer is provided with a plurality of pixel openings, and the pixel openings expose the substrate; the luminescent material layer is arranged in the pixel opening; the substrate is provided with a plurality of grooves, the grooves are positioned in the edge area of the pixel opening, the side walls of the grooves are adjacent to the pixel definition layer, and the luminous material layer is further filled in the grooves. By arranging the grooves in the edge area of the pixel opening, when the luminescent material layer flows from the middle area of the pixel opening to the edge area, the luminescent material layer can be accommodated by the grooves in the edge area, and the surface of the luminescent material layer in the edge area is prevented from protruding, so that the surface of the film layer of the sub-pixel is uniform.
Drawings
Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a schematic cross-sectional view of the structure at A-A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the structure at C-C in FIG. 1;
FIG. 4 is a schematic top view of a portion of another display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic partial top view of another display panel according to an embodiment of the present application.
Reference numerals illustrate:
the substrate 10, the substrate 11, the anode layer 13, the groove 12, the first sub-groove 121, the second sub-groove 122, the sub-pixel 100, the pixel defining layer 20, the pixel opening 200, the first barrier rib 21, the second barrier rib 22, the light emitting material layer 30, the barrier rib 40, the first direction X, and the second direction Y.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In the present application, unless otherwise specified, terms such as "upper," "lower," "left," and "right" are used to generally refer to the directions of the upper, lower, left, and right sides of a device in actual use or in an operating state, and specifically, the directions of the drawings; while "inner" and "outer" are for the outline of the device.
The application provides a display panel, as shown in fig. 1 to 3, the display panel includes a substrate 10, a pixel defining layer 20, and a luminescent material layer 30, wherein the pixel defining layer 20 is disposed on the substrate 10, the pixel defining layer 20 is provided with a plurality of pixel openings 200, and the pixel openings 200 expose the substrate 10; the luminescent material layer 30 is disposed in the pixel opening 200; the substrate 10 is provided with a plurality of grooves 12, the grooves 12 are located in the edge area of the pixel opening 200, the sidewalls of the grooves 12 are adjacent to the pixel defining layer 20, and the luminescent material layer 30 is further filled in the grooves 12.
In this embodiment, the display panel may be an OLED panel or the like.
In this embodiment, the substrate 10 may be a flexible substrate or a rigid substrate. The substrate 10 may include a substrate 11 and a driving circuit disposed on the substrate 11. The driving circuit may include a plurality of thin film transistors for controlling the light emitting units of the display panel to emit light.
The light emitting unit includes an anode layer 13, a light emitting material layer 30, and a cathode layer, which are stacked. The anode layer 13 and the cathode layer are conductive materials. The anode layer 13 serves to provide holes, and the cathode layer serves to provide electrons, which recombine in the light emitting material layer 30 to emit light. The driving circuit supplies driving voltages to the anode layer 13 and the cathode layer.
The light emitting unit may include a red light emitting unit, a green light emitting unit, a blue light emitting unit, but is not limited thereto. One light emitting unit is disposed corresponding to one pixel opening 200.
In this embodiment, the display panel includes a plurality of data lines extending along a first direction X and a plurality of scan lines extending along a second direction Y, and the data lines and the scan lines define a plurality of sub-pixels 100. The first direction X and the second direction Y are disposed at an angle, for example, the angle of the angle may be 90 degrees, but is not limited thereto. The angles of the first direction X and the second direction Y may be adjusted according to the shape of the sub-pixel 100 or may be exchanged.
Each sub-pixel 100 includes at least one thin film transistor and a light emitting unit, and a drain electrode of the thin film transistor is connected to the anode layer 13 of the light emitting unit to supply a driving voltage to the anode layer 13. In some embodiments, the cathode layer of the display panel is provided as a whole layer, and a common cathode voltage is provided for all the sub-pixels 100, but is not limited thereto.
In the present embodiment, the pixel defining layer 20 is disposed on the substrate 10, and the pixel defining layer 20 is provided with a plurality of pixel openings 200. The pixel definition layer 20 may be a linear pixel (Line Bank, LB) design or a Side By Side (SBS) design according to the pixel design of the display panel, which is not limited in this application.
The pixel opening 200 is provided therein with the light emitting material layer 30, and one pixel opening 200 corresponds to one light emitting unit of the display panel. The luminescent material layer 30 may be prepared by an inkjet printing process, and the luminescent material layer 30 is vacuum dried after being printed. Since the light emitting material layer 30 flows from the middle region to the edge region of the pixel opening 200 during the vacuum drying, the surface of the film layer of the light emitting material layer 30 is uneven, resulting in a problem of uneven display (mura), which affects the display effect.
In view of this, the present application provides the groove 12 on the substrate 10 in the pixel opening 200, the groove 12 is located at the edge region of the pixel, and the sidewall of the groove 12 is adjacent to the pixel defining layer 20, so that when the light emitting material layer 30 flows from the middle region of the pixel opening 200 to the edge region, it can be accommodated by the groove 12 at the edge region, and the uneven surface of the film layer caused by the protrusion of the film layer surface of the light emitting material layer 30 at the edge region is avoided.
The middle area and the edge area of the pixel opening 200 are relatively, and the vicinity of the geometric center of the pixel opening 200 is the middle area of the pixel opening 200, and the edge area is disposed around the middle area.
The abutment of the sidewalls of the recess 12 with the pixel defining layer 20 means that the orthographic projection of the recess 12 on the substrate 10 near the boundary of the pixel defining layer 20 overlaps with the orthographic projection of the pixel defining layer 20 on the substrate 10 near the boundary of the recess 12, that is, the sidewalls of the recess 12 are not spaced apart from the pixel defining layer 20.
Since the grooves 12 are located on the substrate 10, when the light emitting material layer 30 is formed in the pixel opening 200, the light emitting material layer 30 is flow-filled in the grooves 12.
In the display panel of the present application, the substrate 10 includes a substrate 11 and an anode layer 13, the anode layer 13 is disposed on one side of the substrate 11 near the luminescent material layer 30, and the grooves 12 are disposed on the anode layer 13.
In the present embodiment, the substrate 10 includes a substrate 11 and an anode layer 13, and the substrate 11 may be a flexible substrate or a rigid substrate. The flexible substrate may be Polyimide (PI), polycarbonate (PC), polyethylene terephthalate (PET), or the like, but is not limited thereto. The rigid substrate may be glass or the like, but is not limited thereto.
In this embodiment, the display surface refers to a plane of the display panel for displaying a screen. The display surface may be parallel to a side surface of the substrate 10 adjacent to the pixel defining layer 20.
In the present embodiment, the pixel defining layer 20 is disposed on the anode layer 13, and the anode layer 13 is provided with the grooves 12, and the depth of the grooves 12 is smaller than the thickness of the anode layer 13 in the direction perpendicular to the display surface. That is, the grooves 12 do not completely penetrate the anode layer 13, and by the above arrangement, the anode layer 13 at the grooves 12 can still supply the driving voltage, and the light emitting material layer 30 directly above the grooves 12 is driven to emit light, so that the arrangement of the grooves 12 does not affect the aperture ratio of the display panel.
Alternatively, the surface of the film layer on the side of the anode layer 13 close to the substrate 10 is provided with grooves 12, and the anode layer 13 is filled in the grooves 12, thereby forming grooves 12 on the surface of the anode layer 13. The manner in which the grooves are formed is not limited in this application.
In the display panel of the present application, the pixel defining layer 20 includes a first wall 21 and a second wall 22 extending in a crossing manner, and the first wall 21 and the second wall 22 define a pixel opening 200 around; wherein, in the direction perpendicular to the display surface, the height of the first retaining wall 21 is smaller than the height of the second retaining wall 22, the groove 12 comprises a first sub-groove 121, the first sub-groove 121 extends along the extending direction of the first retaining wall 21, and the side wall of the first sub-groove 121 is adjacent to the first retaining wall 21.
In the present embodiment, the first retaining wall 21 may extend along the first direction X, the second retaining wall 22 may extend along the second direction Y, and the first retaining wall 21 and the second retaining wall 22 cross and define the pixel opening 200. The first direction X and the second direction Y are disposed at an included angle, and the included angle may be 90 degrees, but is not limited thereto.
In this embodiment, the pixel design of the pixel definition layer 20 may be a linear pixel design. With the linear pixel design, the height of the first retaining wall 21 is smaller than the height of the second retaining wall 22 in the direction perpendicular to the display surface. That is, the surface of the end of the second retaining wall 22 remote from the substrate 10 protrudes from the surface of the end of the first retaining wall 21 remote from the substrate 10. By adopting the linear pixel design, the manufacturing process of the display panel can be simplified.
As shown in fig. 1, when the linear pixel design is adopted, the luminescent material layers 30 of each row in the second direction Y may be the luminescent material layers 30 of the same color, so that the sub-pixels 100 may be printed one by one along the second direction Y, and the adjacent sub-pixels 100 of the same color may flow along the second direction Y during printing, resulting in uneven surface of the luminescent material layer 30.
In response to this, in the present embodiment, the first sub-groove 121 is provided to extend in the extending direction of the first retaining wall 21. The extension of the first sub-groove 121 along the extension direction of the first retaining wall 21 means that the long side of the first sub-groove 121 is parallel to the extension direction of the first retaining wall 21, and the orthographic projection of the long side of the first sub-groove 121 on the display surface overlaps with the orthographic projection of the boundary of the first retaining wall 21, which is close to the first sub-groove 121, on the display surface. That is, the first sub-groove 121 extends in the first direction X, and there is no space between the first sub-groove 121 and the first retaining wall 21.
Through the above arrangement, when the light emitting material layer 30 flows in the second direction Y, the light emitting material layer 30 flowing through the first sub-groove 121 can be accommodated by the first sub-groove 121, so that the surface of the film layer of the light emitting material layer 30 right above the first sub-groove 121 is flat, and the uneven display problem caused by uneven surface of the film layer of the light emitting material layer 30 is avoided.
In the display panel of the present application, as shown in fig. 4 to 5, the groove 12 further includes a second sub-groove 122, the second sub-groove 122 extends along the extending direction of the second retaining wall 22, and the side wall of the second sub-groove 122 is adjacent to the second retaining wall 22, and in the direction perpendicular to the display surface, the depth of the first sub-groove 121 is greater than or equal to the depth of the second sub-groove 122.
In this embodiment, as shown in fig. 4, fig. 4 shows a schematic top view of a sub-pixel 100 of a display panel. The extension of the second sub-groove 122 along the extension direction of the second retaining wall 22 means that the long side of the second sub-groove 122 is parallel to the extension direction of the second retaining wall 22, and the orthographic projection of the long side of the second sub-groove 122 on the display surface overlaps with the orthographic projection of the boundary of the second retaining wall 22, which is close to the second sub-groove 122, on the display surface. That is, the second subslot 122 extends in the second direction Y without a space between the second subslot 122 and the second retaining wall 22.
Alternatively, the second sub-groove 122 is spaced apart from the first sub-groove 121, that is, the first sub-groove 121 does not intersect with the second sub-groove 122.
Alternatively, the second subslot 122 communicates with the first subslot 121. That is, the first subslot 121 intersects the second subslot 122.
With the linear pixel design, due to the blocking of the second blocking wall 22, no flow occurs between the light emitting material layers 30 on the upper and lower sides of the second blocking wall 22 in the first direction X, that is, the degree of flow of the light emitting material layers 30 in the second direction Y is greater than the degree of flow of the light emitting material layers 30 in the first direction X within the single sub-pixel 100.
In view of the above, the depth of the first sub-groove 121 in the direction perpendicular to the display surface may be set to be greater than or equal to the second sub-groove 122, that is, the first sub-groove 121 is deeper than the depth of the second sub-groove 122, and when the adjacent same-color sub-pixels 100 flow in the second direction Y, the first sub-groove 121 can accommodate more ink of the light emitting material layer 30, thereby slowing down the flow of the light emitting material layer 30 in the second direction Y, and avoiding uneven surface of the light emitting material layer 30 caused by concentration of ink of the light emitting material layer 30 at the edge region of the pixel opening 200. Meanwhile, in the drying process of the luminescent material layer 30, since the first sub-groove 121 and the second sub-groove 122 are disposed in the pixel opening 200, even if the coffee ring effect exists, the surface of the luminescent material layer 30 in the edge area of the pixel opening 200 is still located at the same horizontal plane, thereby improving the problem of uneven surface of the luminescent material layer 30 caused by the coffee ring effect.
Accordingly, the first sub-groove 121 is disposed deeper than the second sub-groove 122, so that the degree of flow in the first direction X and the second direction Y of the light emitting material layer 30 when flowing from the middle region to the edge region of the pixel opening 200 of the sub-pixel 100 is made to approach, thereby further improving the problem of uneven film surface of the light emitting material layer 30 within the single sub-pixel 100.
In the display panel of the present application, the pixel defining layer 20 includes a first wall 21 and a second wall 22 extending in a crossing manner, and the first wall 21 and the second wall 22 define a pixel opening 200 around; wherein, in the direction perpendicular to the display surface, the height of the first retaining wall 21 is equal to the height of the second retaining wall 22, the groove 12 comprises a first sub-groove 121 and a second sub-groove 122, the first sub-groove 121 extends along the extending direction of the first retaining wall 21 and the side wall of the first sub-groove 121 is adjacent to the first retaining wall 21, the second sub-groove 122 extends along the extending direction of the second retaining wall 22 and the side wall of the second sub-groove 122 is adjacent to the second retaining wall 22, and in the direction perpendicular to the display surface, the depth of the first sub-groove 121 is equal to the depth of the second sub-groove 122.
In this embodiment, the pixel design of the pixel defining layer 20 may be a side-by-side pixel design, and the luminescent material layers 30 of the side-by-side pixel design are independent of each other, so that in the side-by-side pixel design, the luminescent material layers 30 cannot flow between adjacent sub-pixels 100 in the first direction X and the second direction Y.
In the present embodiment, the depth of the first sub-groove 121 is equal to the depth of the second sub-groove 122 in the direction perpendicular to the display surface. In the drying process of the luminescent material layer 30, since the first sub-groove 121 and the second sub-groove 122 are disposed in the pixel opening 200, even if the coffee ring effect exists, the surface of the luminescent material layer 30 in the edge area of the pixel opening 200 is still located at the same horizontal plane, so as to solve the problem of uneven surface of the luminescent material layer 30 caused by the coffee ring effect.
In some embodiments, as shown in fig. 5, fig. 5 shows a schematic top view of a sub-pixel 100 of another display panel. The first subslot 121 and the second subslot 122 communicate, and the orthographic projection of the groove 12 in a direction perpendicular to the display surface is a closed figure. By the above arrangement, the surface of the light emitting material layer 30 in the edge region in each direction of the pixel opening 200 can be flattened.
In the display panel of the present application, the depth of the groove 12 in the direction perpendicular to the display surface gradually increases along the direction from the middle region of the pixel opening 200 to the edge region of the pixel opening 200.
In the present embodiment, since the light emitting material layer 30 flows along the middle region of the pixel opening 200 toward the edge region of the pixel opening 200, the film surface of the light emitting material layer 30 in the edge region is caused to be higher than that in the middle region, and gradually rises from the middle region of the pixel opening 200 toward the edge region of the pixel opening 200. Accordingly, the depth of the groove 12 may be matched with the film height of the light emitting material layer 30, i.e., the depth of the groove 12 in the direction perpendicular to the display surface is gradually increased in the direction along the middle region to the edge region of the pixel opening 200, thereby improving the film surface flatness of the light emitting material layer 30.
In the display panel of the present application, as shown in fig. 1, in the extending direction of the first retaining wall 21, the first sub-groove 121 extends to the side wall of the first sub-groove 121 to abut the second retaining wall 22. That is, the first sub groove 121 extends in the first direction X. The length of the first sub-groove 121 in the first direction X corresponds to the length of the first retaining wall 21 on the side close to the pixel opening 200, so that the side walls of both ends of the first sub-groove 121 are adjacent to the second retaining wall 22.
By the arrangement, the length of the first subslot 121 can be as long as possible, so that the acting area of the first subslot 121 is increased, and the surface of the film layer of the luminescent material layer 30 in a larger range right above the first subslot 121 is leveled.
In the display panel of the present application, as shown in fig. 1 and 2, the display panel includes a plurality of blocking posts 40, the blocking posts 40 are disposed on the substrate 10, the blocking posts 40 are located in the pixel openings 200, and the orthographic projection of the blocking posts 40 on the substrate 10 does not overlap with the grooves 12.
In the present embodiment, the blocking posts 40 are used to block the flow of the luminescent material layer 30, and further alleviate the uneven surface of the film layer caused by the flow of the luminescent material layer 30.
Note that, the front projection of the barrier rib 40 on the substrate 10 does not overlap with the groove 12, that is, the barrier rib 40 is spaced apart from the groove 12. For example, the blocking post 40 may be disposed at a middle region of the pixel opening 200.
In the present embodiment, the shape of the blocking post 40 may be set as needed, for example, the blocking post 40 may be cylindrical, elliptical, etc., but is not limited thereto.
Alternatively, when the pixel design of the pixel defining layer 20 is a linear pixel design, the degree of flow of the light emitting material layer 30 in the second direction Y is greater than the degree of flow of the light emitting material layer 30 in the first direction X. In response to this, the overall dimension of the blocking post 40 in the first direction X may be greater than the overall dimension of the blocking post 40 in the second direction Y, so that the blocking effect of the blocking post 40 in the first direction X is greater than the blocking effect in the second direction Y, and the degree of flow of the light emitting material layer 30 in the first direction X and the second direction Y is further reduced, thereby further improving the problem of uneven film surface of the light emitting material layer 30 in the single sub-pixel 100.
In the display panel of the present application, the barrier ribs 40 extend in a direction perpendicular to the display surface, and one end of the barrier ribs 40 away from the substrate 10 protrudes from the light emitting material layer 30. That is, one end of the blocking post 40 exceeds the film surface of the light emitting material layer 30, and by the above arrangement, the light emitting material layer 30 can be blocked by the blocking post 40 at various depths.
In this embodiment, the barrier ribs 40 are of a non-conductive material, so as to avoid shorting the anode layer 13 and the cathode layer by the barrier ribs 40. The blocking post 40 may be an inorganic material or an organic material, which is not limited in this application.
Alternatively, an end of the barrier rib 40 remote from the substrate 10 is covered with the light emitting material layer 30, thereby preventing the barrier rib 40 from affecting the aperture ratio of the display panel.
The application also provides a display terminal, which comprises the display panel.
In this embodiment, the display terminal may be: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The display panel and the display terminal provided by the embodiments of the present application are described in detail, and specific examples are applied to illustrate the principles and the implementation of the present application, and the description of the above embodiments is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A display panel, comprising:
a substrate;
the pixel definition layer is arranged on the substrate and is provided with a plurality of pixel openings, and the pixel openings expose the substrate;
a luminescent material layer disposed in the pixel opening;
the substrate is provided with a plurality of grooves, the grooves are located in the edge area of the pixel opening, the side walls of the grooves are adjacent to the pixel definition layer, and the luminous material layer is further filled in the grooves.
2. The display panel of claim 1, wherein the pixel defining layer comprises first and second cross-extending walls that define the pixel opening therearound;
in the direction perpendicular to the display surface, the height of the first retaining wall is smaller than that of the second retaining wall, the groove comprises a first sub-groove, the first sub-groove extends along the extending direction of the first retaining wall, and the side wall of the first sub-groove is adjacent to the first retaining wall.
3. The display panel according to claim 2, wherein the groove further comprises a second sub-groove extending in an extending direction of the second retaining wall and a side wall of the second sub-groove being adjacent to the second retaining wall, and a depth of the first sub-groove is greater than or equal to a depth of the second sub-groove in a direction perpendicular to the display surface.
4. The display panel of claim 1, wherein the pixel defining layer comprises first and second cross-extending walls that define the pixel opening therearound;
the groove comprises a first sub-groove and a second sub-groove, the first sub-groove extends along the extending direction of the first retaining wall, the side wall of the first sub-groove is adjacent to the first retaining wall, the second sub-groove extends along the extending direction of the second retaining wall, the side wall of the second sub-groove is adjacent to the second retaining wall, and the depth of the first sub-groove is equal to the depth of the second sub-groove in the direction perpendicular to the display surface.
5. The display panel of claim 4, wherein the first subslot and the second subslot are in communication.
6. The display panel according to claim 1, wherein the depth of the groove in a direction perpendicular to the display surface gradually increases in a direction from a middle region of the pixel opening to an edge region of the pixel opening.
7. The display panel according to any one of claims 1 to 6, wherein the display panel comprises:
the plurality of blocking columns are arranged on the substrate, the blocking columns are positioned in the pixel openings, and orthographic projections of the blocking columns on the substrate are not overlapped with the grooves.
8. The display panel of claim 7, wherein the barrier ribs extend in a direction perpendicular to the display surface, and wherein an end of the barrier ribs remote from the substrate protrudes from the luminescent material layer.
9. The display panel according to any one of claims 1 to 6, wherein the substrate comprises a base plate and an anode layer, the anode layer is provided on a side of the base plate close to the light emitting material layer, and the groove is provided on the anode layer.
10. A display terminal comprising the display panel according to any one of claims 1 to 9.
CN202311161908.6A 2023-09-08 2023-09-08 Display panel and display terminal Pending CN117529145A (en)

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