Display panel and display device

Abstract

The embodiment of the utility model provides a display panel and a display device. According to the display surface, a pixel definition layer comprises a flat part and a plurality of first protruding parts, the first protruding parts protrude towards the side away from a first substrate relative to the flat part, a packaging layer comprises a plurality of second protruding parts corresponding to the first protruding parts, and a cover plate makes contact with the second protruding parts. A gap exists between the part, located between the multiple second protruding parts, in the packaging layer and the cover plate, so that when the cover plate is impacted, impact force can be buffered and released through the gap between the part, located between the multiple second protruding parts, in the packaging layer and the cover plate; the impact force is prevented from being directly conducted to the packaging layer and then conducted to the light-emitting unit, so that stripping or other problems between the pixel electrode and the light-emitting layer are prevented, the problem of display failure caused by stripping or other problems between the pixel electrode and the light-emitting layer during a falling ball test is avoided, and the yield of the display panel is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display technical field especially relates to a display panel and display device. BACKGROUND

[0002] OLED (Organic Light-Emitting Diode) display device has light, wide viewing angle, low power consumption, fast response speed, low temperature resistance, high luminous efficiency, and can be prepared curved flexible display screen, is widely used in various fields.With the development of display technology, the requirement of mobile phone, notebook computer, tablet computer and other products to the fall ability is higher and higher, therefore, in the production process of OLED display device, fall ball test is carried out to detect the impact resistance of OLED display device.But in the actual test process, it is found that OLED display device can exist fall ball injury, leading to display failure.

[0003] Therefore, the existing OLED display device has the technical problem of display failure caused by fall ball injury in the fall ball test process. UTILITY MODEL CONTENT

[0004] The utility model embodiment provides a display panel and display device to solve the technical problem of display failure caused by fall ball injury in the fall ball test process of the existing OLED display device.

[0005] In order to realize the above-mentioned purpose, according to the first aspect of the utility model, a display panel is provided, which comprises:

[0006] A first substrate;

[0007] A pixel definition layer is arranged on one side of the first substrate, and the pixel definition layer comprises a flat part and a plurality of first protruding parts, wherein the first protruding parts protrude away from the first substrate on the side opposite to the flat part;

[0008] An encapsulation layer is arranged on the side of the pixel definition layer away from the first substrate, and the encapsulation layer comprises a plurality of second protruding parts corresponding to the plurality of first protruding parts;

[0009] A cover plate is arranged on the side of the encapsulation layer away from the pixel definition layer;

[0010] Wherein, the cover plate is in contact with the second protruding parts, and in the area between the plurality of second protruding parts, there is a gap between the part of the encapsulation layer located between the plurality of second protruding parts and the cover plate.

[0011] Optionally, the pixel definition layer comprises a first pixel sub-layer and a second pixel sub-layer, the first pixel sub-layer comprises a plurality of first pixel definition portions arranged at intervals along a first direction, the first pixel definition portions extend along a second direction, the second pixel sub-layer comprises a plurality of second pixel definition portions arranged at intervals along the second direction, the second pixel definition portions extend along the first direction.

[0012] The second pixel definition portion comprises the first protruding portion, and an included angle between the first direction and the second direction is greater than 0 and less than or equal to 90 degrees.

[0013] Optionally, a projection of the first pixel definition portion on the first substrate overlaps a projection of the second pixel definition portion on the first substrate, and at least one first protruding portion is arranged in an overlapping area of the first pixel definition portion and the second pixel definition portion.

[0014] Optionally, the projection of the first pixel definition portion on the first substrate overlaps the projection of the second pixel definition portion on the first substrate at multiple places, and any first protruding portion is arranged in an overlapping area of the first pixel definition portion and the second pixel definition portion.

[0015] Optionally, the encapsulation layer comprises a first inorganic layer and a second inorganic layer, the first inorganic layer is arranged between the second inorganic layer and the pixel definition layer, and the first inorganic layer is in direct contact with the second inorganic layer.

[0016] Optionally, the cover plate is a glass substrate, and the glass substrate is in direct contact with the second protruding portion.

[0017] Optionally, the cover plate comprises a second substrate and a color film layer, the color film layer is arranged between the second substrate and the encapsulation layer, the color film layer comprises color resist of different light transmission colors and a black matrix, the black matrix is arranged in correspondence with the pixel definition layer, and the second protruding portion is in contact with the black matrix.

[0018] Optionally, a thickness of the first protruding portion is two to three times a thickness of the flat portion.

[0019] Optionally, the thickness of the first protruding portion is greater than or equal to 2 microns.

[0020] According to a second aspect of the present application, a display device is provided, which comprises the display panel according to any one of the above embodiments.

[0021] The utility model discloses an embodiment provides a kind of display panel and display device;The display panel includes first substrate, pixel definition layer, encapsulation layer and cover plate, pixel definition layer is arranged on the side of first substrate, pixel definition layer includes flat part and multiple first convex parts, first convex part is protruded to the side away from first substrate relative to flat part, encapsulation layer is arranged on the side of pixel definition layer away from first substrate, encapsulation layer includes multiple second convex parts corresponding to multiple first convex parts, cover plate is arranged on the side of encapsulation layer away from pixel definition layer, wherein, cover plate and second convex part contact, in the area between multiple second convex parts, there is gap between the part of encapsulation layer between multiple second convex parts and cover plate.The utility model embodiment makes pixel definition layer include flat part and multiple first convex parts, makes first convex part be protruded to the side away from first substrate relative to flat part, so that encapsulation layer includes multiple second convex parts corresponding to multiple first convex parts, cover plate and second convex part contact, and there is gap between the part of encapsulation layer between multiple second convex parts and cover plate, so when cover plate is impacted, the gap between the part of encapsulation layer between multiple second convex parts and cover plate is used to buffer and release impact force, prevent impact force from being directly conducted to encapsulation layer and then conducted to light emitting unit, so as to prevent peeling or other problems between pixel electrode and light emitting layer, avoid the problem of display failure caused by peeling or other problems between pixel electrode and light emitting layer during drop ball test, improve the yield of display panel.

[0022] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0024] In order to more completely understand the utility model and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description indicate the same parts.

[0025] Figure 1 The schematic diagram of the comparative display device provided by the embodiment of the utility model is shown.

[0026] Figure 2 The first cross-sectional schematic diagram of the display panel provided by the embodiment of the utility model is shown.

[0027] Figure 3 The schematic diagram of pixel definition layer, encapsulation layer and cover plate provided by the embodiment of the utility model is shown.

[0028] Figure 4 A perspective view of a pixel definition layer and a light-emitting layer is provided for the embodiments of the present application.

[0029] Figure 5 A schematic diagram when a display panel is subjected to a ball drop test is provided for the embodiments of the present application.

[0030] Figure 6 A second cross-sectional schematic diagram of a display panel is provided for the embodiments of the present application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative effort fall within the protection scope of the present application.

[0032] In order to explain the principle of the technical problem provided by the embodiments of the present application, a comparative display device is provided. It can be understood that the comparative display device cannot be used as the prior art of the embodiments of the present application. As shown in FIG. 1, the comparative display device comprises, in sequence, a heat dissipation film 11, a pressure-sensitive adhesive film 12, a foam film 13, a grid adhesive film 14, an array film 15, a light-emitting device 16, a cover glass 17 and a polarizing film 18. Figure 1

[0033] Table 1: Ball drop test table of the comparative display device

[0034]

[0035] In the column of “test standard”, a ball drop test is performed by using a ball with a mass of 65 grams and a diameter of 25 millimeters, and whether the test is passed is determined according to whether the front and back surfaces of the comparative display device are normal in appearance and function. In the column of “item”, the distance from the upper surface of the polarizing film 18 of the comparative display device is indicated, for example, “2 centimeters” indicates that the distance from the upper surface of the polarizing film 18 is 2 centimeters. In the column of “test result”, “NG” indicates that the test is not passed, and there is a function abnormality or an appearance abnormality. “Pass” indicates that the test is passed, and there is no abnormality. In the column of “impact energy”, the impact energy of the ball is indicated. As can be seen from Table 1, the comparative display device does not pass the test of any ball with a height when subjected to the ball drop test. It is found through analysis that this is because the anode and the light-emitting layer in the light-emitting device are peeled off, resulting in abnormality in appearance and / or display picture, and the comparative display device does not have the pixel definition layer and the light-emitting layer provided by the embodiments of the present application. Figure 1 ​As can be seen, due to the close contact between the layers, the impact force is transmitted from top to bottom during the drop ball test. When this force reaches the anode and the emissive layer in the light-emitting device, it causes delamination between them, leading to other problems and ultimately display failure. Therefore, existing OLED display devices suffer from a technical problem where drop ball damage during the drop ball test causes display failure.

[0036] This utility model provides a display panel and a display device to address the aforementioned technical problems.

[0037] Figure 2 This is a first cross-sectional schematic diagram of the display panel provided in an embodiment of the present utility model. Figure 3 A schematic diagram of the pixel definition layer, encapsulation layer, and cover plate provided in an embodiment of this utility model. Figure 4 This is a perspective view of the pixel definition layer and the light emission layer provided in an embodiment of the present utility model. Figure 5 This is a schematic diagram of a ball drop test performed on a display panel according to an embodiment of the present invention. Figure 6 This is a second cross-sectional schematic diagram of the display panel provided in an embodiment of the present utility model.

[0038] like Figures 2 to 6 As shown, this utility model embodiment provides a display panel 2, which includes a first substrate 21, a pixel definition layer 242, an encapsulation layer 25, and a cover plate 26. The pixel definition layer 242 is disposed on one side of the first substrate 21. The pixel definition layer 242 includes a flat portion 242a and a plurality of first protrusions 242b. The first protrusions 242b protrude from the flat portion 242a away from the first substrate 21. The encapsulation layer 25 is disposed on the side of the pixel definition layer 242 away from the first substrate 21. The encapsulation layer 25 includes a plurality of second protrusions 25a corresponding to the plurality of first protrusions 242b. The cover plate 26 is disposed on the side of the encapsulation layer 25 away from the pixel definition layer 242.

[0039] The cover plate 26 contacts the second protrusion 25a, and in the region between the plurality of second protrusions 25a, there is a gap 27 between the portion of the encapsulation layer 25 located between the plurality of second protrusions 25a and the cover plate 26.

[0040] The utility model discloses an embodiment provides a kind of display panel, which makes the pixel definition layer include flat part and multiple first convex parts, makes the first convex part protrude to the side away from the first substrate relative to flat part, so that the packaging layer includes multiple second convex parts corresponding to multiple first convex parts, the cover plate is contacted with second convex part, and there is gap between the part of packaging layer between multiple second convex parts and cover plate, so that when the cover plate is impacted, the impact force is buffered and released through the gap between the part of packaging layer between multiple second convex parts and cover plate, to prevent the impact force from being directly transmitted to the packaging layer and then to the light emitting unit, thereby preventing peeling or other problems between the pixel electrode and the light emitting layer, avoiding the problem of display failure caused by peeling or other problems between the pixel electrode and the light emitting layer during the drop ball test, and improving the yield of the display panel.

[0041] Specifically, as shown in Figure 5 It can be seen that when the small ball 28 falls on the display panel, even if the cover plate 26 is deformed by impact, due to the existence of the gap 27, there is a gap between the deformed part of the cover plate and the packaging layer 25, thereby preventing the impact force from being directly transmitted to the packaging layer and then to the light emitting layer and the pixel electrode layer, causing display failure. The impact force is buffered and released through the gap, even if the impact position is located at the second convex part, the second convex part can also buffer, and since the second convex part corresponds to the non-light emitting area, it will not cause display failure, improving the yield of the display panel. And since the first convex part is formed by the pixel definition layer, and the second convex part is formed by the packaging layer, there is no need to add a film layer, reducing the process steps.

[0042] Specifically, the part of the packaging layer between multiple second convex parts can be flat or not flat, as long as there is a gap between the part of the packaging layer between multiple second convex parts and the cover plate.

[0043] Specifically, as shown in Figure 2 The display panel 2 includes a first substrate 21, a drive circuit layer 22, a light emitting functional layer, a packaging layer 25 and a cover plate 26. The drive circuit layer 22 includes a buffer layer 221, an active layer 222, a first gate insulating layer 223, a first gate layer 224, a second gate insulating layer 225, a second gate layer 226, an interlayer insulating layer 227, a first source-drain layer 228, a passivation layer 229, a first planarization layer 231, a second source-drain layer 232, a second planarization layer 233 and a third planarization layer 234. The light emitting functional layer includes a pixel electrode layer 241, a pixel definition layer 242, a light emitting layer 243 and a common electrode layer (not shown).

[0044] Specifically, the material of the first substrate can be one of glass and polyimide.

[0045] In some embodiments, asFigures 2 to 4 As shown, the pixel definition layer 242 includes a first pixel sub-layer 341 and a second pixel sub-layer 342. The first pixel sub-layer 341 includes a plurality of first pixel definition portions 341a spaced apart along a first direction X, and the first pixel definition portions 341a extend along a second direction Y. The second pixel sub-layer 342 includes a plurality of second pixel definition portions 342a spaced apart along the second direction Y, and the second pixel definition portions 342a extend along the first direction X.

[0046] The second pixel defining portion 342a includes the first protrusion 242b, and the angle between the first direction X and the second direction Y is greater than 0 and less than or equal to 90 degrees. By including the first protrusion in the second pixel defining portion, the encapsulation layer can protrude at the location of the first protrusion to form a second protrusion. Through the contact between the second protrusion and the cover plate, a certain gap exists between the portion of the encapsulation layer located between the multiple second protrusions and the cover plate for buffering, thereby preventing display panel failure.

[0047] Specifically, the hydrophobicity of the second pixel sub-layer is greater than that of the first pixel sub-layer.

[0048] Specifically, by arranging multiple first pixel definition parts at intervals along a first direction and multiple second pixel definition parts at intervals along a second direction, a column of light-emitting sub-pixels of the same color can be connected together when forming a light-emitting layer by inkjet printing. This results in a faster inkjet printing rate and higher preparation efficiency. It also prevents ink droplet volume from being too large or too small due to printhead nozzle instability, avoiding uneven display and problems such as low nozzle utilization and low printing efficiency.

[0049] Specifically, the above embodiments are illustrated by taking the pixel definition layer as including a first pixel sub-layer and a second pixel sub-layer as an example. However, the embodiments of this utility model are not limited to this. Only one pixel definition layer may be set, and the pixel definition layer includes multiple arrayed pixel openings.

[0050] In some embodiments, such as Figure 4 As shown, the projection of the first pixel definition portion 341a onto the first substrate 21 overlaps with the projection of the second pixel definition portion 342a onto the first substrate 21, and at least one first protrusion 242b is disposed in the overlapping area of ​​the first pixel definition portion 341a and the second pixel definition portion 342a. By disposing at least one first protrusion in the overlapping area of ​​the first pixel definition portion and the second pixel definition portion, the first protrusion will not affect the light emission effect of the sub-pixel unit when it is disposed, thus avoiding a reduction in the light emission efficiency of the sub-pixel unit.

[0051] Specifically, part of the first protruding portion can be arranged in the overlapping area of the first pixel definition portion and the second pixel definition portion, and part of the first protruding portion can be arranged in the area of the second pixel definition portion which does not cross the first pixel definition portion.

[0052] Specifically, as shown in Figure 4 The light-emitting layer 243 includes a first light-emitting layer 243a, a second light-emitting layer 243b, and a third light-emitting layer 243c, which are arranged between a plurality of second pixel definition portions 342a, respectively. It can be seen that the first protruding portion 242b is arranged at the intersection of the first pixel definition portion and the second pixel definition portion 342a, thereby avoiding the influence of the first protruding portion on the light-emitting effect of each sub-pixel unit.

[0053] Specifically, the light-emitting colors of the first light-emitting layer, the second light-emitting layer, and the third light-emitting layer can be red, green, and blue, respectively, but the embodiments of the present application are not limited thereto. The light-emitting colors of the first light-emitting layer, the second light-emitting layer, and the third light-emitting layer can be red, blue, and green, respectively, or blue, green, and red, respectively, or other arrangements.

[0054] Specifically, it can be understood that the display panel includes a plurality of pixel units, each pixel unit including a first sub-pixel unit, a second sub-pixel unit, and a third sub-pixel unit, the pixel electrode layer including a plurality of pixel electrodes, the pixel electrode, the first light-emitting layer, and the common electrode layer can form the first sub-pixel unit, the pixel electrode, the second light-emitting layer, and the common electrode layer can form the second sub-pixel unit, and the pixel electrode, the third light-emitting layer, and the common electrode layer can form the third sub-pixel unit.

[0055] Specifically, the light-emitting colors of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit can be red, blue, and green, respectively, or blue, green, and red, respectively, or other arrangements.

[0056] In some embodiments, as shown in Figure 4 The projection of the first pixel definition portion 341a on the first substrate 21 overlaps with the projection of the second pixel definition portion 342a on the first substrate 21 in multiple places, and any first protruding portion 242b is arranged in the overlapping area of the first pixel definition portion 341a and the second pixel definition portion 342a. By arranging any first protruding portion in the overlapping area of the first pixel definition portion and the second pixel definition portion, the light-emitting effect of the sub-pixel unit is further avoided from being affected by the first protruding portion, and the light-emitting efficiency of the sub-pixel unit is avoided from being reduced.

[0057] Specifically, each overlapping area of the first pixel definition portion and the second pixel definition portion is provided with a first protruding portion.

[0058] In some embodiments, as shown in Figure 2 , Figure 3 The encapsulation layer 25 includes a first inorganic layer 251 and a second inorganic layer 252, the first inorganic layer 251 is arranged between the second inorganic layer 252 and the pixel definition layer 242, and the first inorganic layer 251 is in direct contact with the second inorganic layer 252. By making the encapsulation layer include a first inorganic layer and a second inorganic layer, the first inorganic layer is in direct contact with the second inorganic layer, so that when the pixel definition layer forms a first protrusion, the first inorganic layer will form a protrusion at the arrangement position of the first protrusion, and the second inorganic layer will form a protrusion at the protrusion position of the first inorganic layer, so that the encapsulation layer can form a second protrusion at a position corresponding to the first protrusion, and the second protrusion supports the cover plate, thereby preventing the cover plate from directly transmitting the impact force to the encapsulation layer when the cover plate is impacted, and avoiding the failure of the display panel.

[0059] Specifically, compared with the encapsulation layer provided with an organic layer that fills the protrusion, the encapsulation layer of the embodiment of the utility model is made of a first inorganic layer and a second inorganic layer, and the protrusion is not filled by the organic layer, so that the protrusion finally supports the cover plate, and the part of the encapsulation layer located between the plurality of second protrusions forms a gap with the cover plate, buffers the impact force, prevents the cover plate from directly transmitting the impact force to the encapsulation layer when the cover plate is impacted, and avoids the failure of the display panel.

[0060] Specifically, the material of the first inorganic layer includes one of silicon nitride and silicon oxide, the material of the second inorganic layer includes one of silicon nitride and silicon oxide, the thickness of the first inorganic layer is 1 micrometer, and the thickness of the second inorganic layer is 1 micrometer.

[0061] In some embodiments, as shown in Figure 2 The cover plate 26 is a glass substrate, and the glass substrate is in direct contact with the second protrusion 25a. By making the cover plate a glass substrate, the glass substrate is in direct contact with the second protrusion, so that when the cover plate is impacted, the impact force can be buffered through the gap, preventing the cover plate from directly transmitting the impact force to the encapsulation layer when the cover plate is impacted, and avoiding the failure of the display panel.

[0062] In some embodiments, the display panel further includes a polarizing plate, and the polarizing plate is arranged on the side of the cover plate away from the encapsulation layer.

[0063] In some embodiments, as shown in Figure 6As shown, the cover plate 26 includes a second substrate 261 and a color film layer 262, the color film layer 262 is arranged between the second substrate 261 and the encapsulation layer 25, the color film layer 262 includes color blocks 262a of different light transmission colors and a black matrix 262b, the black matrix 262b is arranged corresponding to the pixel definition layer 242, and the second protruding portion 25a is in contact with the black matrix 262b. By making the cover plate include a second substrate and a color film layer, there is no need to arrange a polarizer, the light extraction efficiency of the display panel can be improved, the power consumption is reduced, and by making the black matrix in contact with the second protruding portion, a gap can be formed between the color block and the encapsulation layer, the impact force is buffered and released through the gap and the second protruding portion, so that the impact force can be directly transmitted to the encapsulation layer when the cover plate is impacted, and the display panel is prevented from being invalid.

[0064] Specifically, the color film layer can be arranged on the second substrate, and the second substrate and the color film layer are laminated with the encapsulation layer.

[0065] Specifically, the color block can include a red color block, a green color block, and a blue color block.

[0066] Specifically, when the cover plate includes a color film layer, a polarizer can not be arranged, and an anti-glare film can be arranged on the side of the second substrate away from the color film layer.

[0067] In some embodiments, as Figure 3 As shown, the thickness L1 of the first protruding portion 242b is two to three times the thickness L2 of the flat portion 242a. By making the thickness of the first protruding portion two to three times the thickness of the flat portion, the protrusion of the first protruding portion is thicker, and the subsequent film layer is prevented from being flattened to cause the gap between the cover plate to be unable to be formed.

[0068] In some embodiments, the thickness of the first protruding portion 242b is greater than or equal to 2 microns. By making the thickness of the first protruding portion 242b greater than or equal to 2 microns, the thickness of the gap between the portion of the encapsulation layer between the second protruding portions and the cover plate is greater, so that when the cover plate is impacted, the cover plate will not press the area of the encapsulation layer where the second protruding portion is not arranged even if it is deformed, thereby buffering and releasing the impact force and avoiding the display panel from being invalid.

[0069] Specifically, the thickness of the flat portion is 1 micron.

[0070] Specifically, when forming the first protruding portion, a half-tone process can be used to form the second pixel sub-layer using a semi-transparent mask plate, the area of the semi-transparent mask plate where the first protruding portion is formed is completely opaque, the area where the flat portion is formed is semi-transparent, and the area where the sub-pixel unit is arranged is completely transparent, so that the shape of the second pixel sub-layer can be formed, the first protruding portion is formed, and when the encapsulation layer is subsequently formed, the encapsulation layer forms the second protruding portion.

[0071] Specifically, no other film layer is arranged between the encapsulation layer and the cover plate.

[0072] Specifically, the material of the active layer comprises one of low-temperature polysilicon and metal oxide.

[0073] Specifically, the material of the first gate layer comprises one or more of titanium, aluminum, copper and silver, or the material of the first gate layer can be a stack of at least two of titanium, aluminum, copper and silver.

[0074] Specifically, the material of the second gate layer comprises one or more of titanium, aluminum, copper and silver, or the material of the second gate layer can be a stack of at least two of titanium, aluminum, copper and silver.

[0075] Specifically, the material of the first source-drain layer comprises one or more of titanium, aluminum, copper and silver, or the material of the first source-drain layer can be a stack of at least two of titanium, aluminum, copper and silver.

[0076] Specifically, the material of the second source-drain layer comprises one or more of titanium, aluminum, copper and silver, or the material of the second source-drain layer can be a stack of at least two of titanium, aluminum, copper and silver.

[0077] Specifically, the material of the pixel electrode layer comprises one or more of indium tin oxide, silver and magnesium, or the material of the pixel electrode layer can be a stack of at least two of indium tin oxide, silver and magnesium.

[0078] Specifically, the cross-sectional shape of the first protruding portion can be rectangular or trapezoidal.

[0079] Meanwhile, the display device comprises the display panel according to any one of the above embodiments.

[0080] Specifically, the display panel can be an organic light-emitting diode display panel.

[0081] In the description of the present application, the terms "first" and "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0082] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0083] The embodiments, the implementation manners and the related technical features can be combined or replaced without conflict.

[0084] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, but any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the utility model without departing from the technical scheme of the utility model still belong to the scope of the technical scheme of the utility model.

Claims

1. A display panel, characterized by, The display panel comprises: a first substrate; a pixel definition layer disposed on one side of the first substrate, the pixel definition layer comprising a flat portion and a plurality of first protruding portions protruding away from the first substrate relative to the flat portion; an encapsulation layer disposed on a side of the pixel definition layer away from the first substrate, the encapsulation layer comprising a plurality of second protruding portions corresponding to the plurality of first protruding portions; a cover plate disposed on a side of the encapsulation layer away from the pixel definition layer; wherein the cover plate is in contact with the second protruding portions, and in the area between the plurality of second protruding portions, there is a gap between the portion of the encapsulation layer located between the plurality of second protruding portions and the cover plate.

2. The display panel of claim 1, wherein, The pixel definition layer comprises a first pixel sub-layer and a second pixel sub-layer, the first pixel sub-layer comprises a plurality of first pixel definition portions arranged at intervals along a first direction, the first pixel definition portions extend along a second direction, the second pixel sub-layer comprises a plurality of second pixel definition portions arranged at intervals along the second direction, the second pixel definition portions extend along the first direction; wherein the second pixel definition portions comprise the first protruding portions, and the angle between the first direction and the second direction is greater than 0 and less than or equal to 90 degrees.

3. The display panel of claim 2, wherein, The projection of the first pixel definition portions on the first substrate overlaps the projection of the second pixel definition portions on the first substrate, and at least one of the first protruding portions is arranged in the overlapping area of the first pixel definition portions and the second pixel definition portions.

4. The display panel of claim 3, wherein, The projection of the first pixel definition portions on the first substrate overlaps the projection of the second pixel definition portions on the first substrate at multiple places, and any one of the first protruding portions is arranged in the overlapping area of the first pixel definition portions and the second pixel definition portions.

5. The display panel of any of claims 1 to 4, wherein, The encapsulation layer comprises a first inorganic layer and a second inorganic layer, the first inorganic layer is arranged between the second inorganic layer and the pixel definition layer, and the first inorganic layer is in direct contact with the second inorganic layer.

6. The display panel of any one of claims 1 to 4, wherein, The cover plate is a glass substrate, and the glass substrate is in direct contact with the second protruding portions.

7. The display panel according to any one of claims 1 to 4, characterized in that, The cover plate comprises a second substrate and a color filter layer, the color filter layer is arranged between the second substrate and the encapsulation layer, the color filter layer comprises color resist of different light transmission colors and a black matrix, the black matrix is arranged corresponding to the pixel definition layer, and the second protruding portions are in contact with the black matrix.

8. The display panel of any one of claims 1 to 4, wherein, The thickness of the first protruding portions is two to three times the thickness of the flat portion.

9. The display panel of claim 8, wherein, The thickness of the first protruding portions is greater than or equal to 2 microns.

10. A display device, characterized by comprising: The display panel comprises any one of the display panels according to claims 1 to 9.

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