Display panel and display device

Abstract

The embodiment of the utility model provides a display panel and a display device. According to the display panel, a black matrix comprises a flat part and a plurality of protruding parts, the protruding parts protrude towards one side of a packaging layer relative to the flat part, the packaging layer is in contact with the protruding parts, and a gap exists between a color resistor and the packaging layer in an area among the protruding parts, so that when the cover plate side of the display panel is impacted, the color resistor and the packaging layer are not impacted; impact force is buffered and released through the gap between the color resistor and the packaging layer, the impact force is prevented from being directly conducted to the packaging layer in the area and then conducted to the light-emitting unit, and therefore stripping or other problems between the pixel electrode and the light-emitting layer are prevented. The problem of display failure caused by stripping between the pixel electrode and the light-emitting layer or other problems during a falling ball test is avoided, and the yield of the display panel is improved.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a display panel and a display device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) displays are widely used in various fields due to their advantages such as lightweight, wide viewing angle, low power consumption, fast response speed, low temperature resistance, high luminous efficiency, and the ability to fabricate flexible displays. With the development of display technology, products such as mobile phones, laptops, and tablets have increasingly higher requirements for drop resistance. Therefore, drop ball tests are conducted during the production process of OLED displays to test their impact resistance. However, in actual testing, it has been found that OLED displays can be damaged by drop balls, leading to display failure.

[0003] Therefore, existing OLED display devices have a technical problem where damage from falling balls during drop ball testing can cause display failure. Utility Model Content

[0004] This utility model provides a display panel and a display device to solve the technical problem that existing OLED display devices fail due to ball impact damage during ball drop testing.

[0005] To achieve the above objectives, according to a first aspect of the present invention, a display panel is provided, the display panel comprising:

[0006] First substrate;

[0007] A light-emitting functional layer is disposed on one side of the first substrate;

[0008] An encapsulation layer is disposed on the side of the light-emitting functional layer away from the first substrate;

[0009] A cover plate is disposed on the side of the encapsulation layer away from the light-emitting functional layer. The cover plate includes a second substrate and a color filter layer. The color filter layer includes multiple color filters of different light-transmitting colors and a black matrix.

[0010] The black matrix includes a flat portion and multiple protruding portions. The protruding portions protrude relative to the flat portion towards the side closer to the encapsulation layer. The encapsulation layer contacts the protruding portions. In the region between the multiple protruding portions, there is a gap between the color resist and the encapsulation layer.

[0011] Optionally, the black matrix includes multiple openings, the color resist is disposed within the openings, the protrusion is disposed in the area between two adjacent rows of color resists, and the protrusion is disposed in the area between two adjacent columns of color resists.

[0012] Optionally, the color resist includes multiple first color resists, multiple second color resists, and multiple third color resists of different light-transmitting colors, with the multiple first color resists arranged in the same column, the multiple second color resists arranged in the same column, and the multiple third color resists arranged in the same column.

[0013] Optionally, the light-emitting functional layer includes a pixel definition layer, which includes a first pixel sub-layer and a second pixel sub-layer. The first pixel sub-layer includes a plurality of first pixel definition portions spaced apart along a first direction, and the first pixel definition portions extend along a second direction. The second pixel sub-layer includes a plurality of second pixel definition portions spaced apart along the second direction, and the second pixel definition portions extend along the first direction.

[0014] Wherein, the projection of the first pixel definition portion on the first substrate overlaps with the projection of the second pixel definition portion on the first substrate, and at least one of the protrusions is disposed in the overlapping area of ​​the first pixel definition portion and the second pixel definition portion.

[0015] Optionally, the projection of the first pixel definition portion on the first substrate and the projection of the second pixel definition portion on the first substrate overlap in multiple places, and any of the protrusions is disposed in the overlapping area of ​​the first pixel definition portion and the second pixel definition portion.

[0016] Optionally, in the first direction, the ratio of the distance between two adjacent protrusions to the maximum width of the protrusion is less than or equal to 30.

[0017] Optionally, the ratio of the width of the protrusion on the side near the second substrate to the width of the protrusion on the side near the encapsulation layer is less than or equal to 2.

[0018] Optionally, the minimum width of the protrusion on the side closest to the encapsulation layer is greater than or equal to 3 micrometers.

[0019] Optionally, the thickness of the portion of the protrusion that extends beyond the flat portion is greater than or equal to 1 micrometer.

[0020] According to a second aspect of the present invention, a display device is provided, the display device comprising a display panel as described in any of the above embodiments.

[0021] This utility model provides a display panel and a display device. The display panel includes a first substrate, a light-emitting functional layer, an encapsulation layer, and a cover plate. The light-emitting functional layer is disposed on one side of the first substrate, the encapsulation layer is disposed on the side of the light-emitting functional layer away from the first substrate, and the cover plate is disposed on the side of the encapsulation layer away from the light-emitting functional layer. The cover plate includes a second substrate and a color filter layer. The color filter layer includes multiple color resists of different light-transmitting colors and a black matrix. The black matrix includes a flat portion and multiple protrusions. The protrusions protrude relative to the flat portion towards the side closer to the encapsulation layer. The encapsulation layer contacts the protrusions. In the area between the multiple protrusions, there is a gap between the color resists and the encapsulation layer. By including a flat portion and multiple protrusions in the black matrix, with the protrusions protruding towards one side of the encapsulation layer relative to the flat portion, and the encapsulation layer contacting the protrusions, a gap is created between the color resist and the encapsulation layer in the area between the multiple protrusions. This allows the impact force to be buffered and released when the cover side of the display panel is impacted, preventing the impact force from being directly transmitted to the encapsulation layer and then to the light-emitting unit in this area. This prevents the pixel electrode from peeling off from the light-emitting layer or causing other problems, avoiding display failure caused by peeling off from the light-emitting layer during drop ball testing, and improving the yield of the display panel.

[0022] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] To gain a more complete understanding of this utility model and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0025] Figure 1 A schematic diagram of a comparison display device provided in an embodiment of this utility model.

[0026] Figure 2 This is a cross-sectional schematic diagram of the display panel provided in an embodiment of the present utility model.

[0027] Figure 3 This is a planar schematic diagram of the color filter layer provided in an embodiment of the present invention.

[0028] Figure 4 A perspective view of the pixel definition layer, the light emission layer, and the black matrix provided in an embodiment of this utility model.

[0029] Figure 5 This is a cross-sectional schematic diagram of the cover plate provided in an embodiment of the present utility model.

[0030] Figure 6 This is a schematic diagram of a ball drop test performed on a display panel according to an embodiment of the present invention. Detailed Implementation

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

[0032] To illustrate the principle behind the technical problem addressed in this embodiment of the present invention, a contrast display device is provided. It should be understood that this contrast display device cannot be considered prior art in this embodiment of the present invention. Figure 1 As shown, the comparative display device includes a heat dissipation film 11, a pressure-sensitive adhesive film 12, a foam film 13, a mesh adhesive film 14, an array film 15, a light-emitting device 16, a cover glass 17, and a polarizing film 18 arranged sequentially. A drop ball test was conducted using a 65-gram ball with a diameter of 25 millimeters, and the results are shown in the table below:

[0033] Table 1: Comparison of Drop Ball Test Tables for Display Devices

[0034]

[0035] The "Test Standard" column indicates that a 65-gram, 25-millimeter diameter ball is used for a drop test. The test pass / fail is determined by whether there are any visual or functional abnormalities on the front and back of the comparison display device. The "Item" column indicates the distance between the ball and the upper surface of the polarizer film 18 of the comparison display device; for example, "2 cm" means the ball is 2 cm away from the upper surface of the polarizer film 18. In the "Test Result" column, "NG" indicates failure due to functional or visual abnormalities, while "Pass" indicates success without abnormalities. The "Impact Energy" column indicates the impact energy of the ball. As shown in Table 1, the comparison display device failed the drop test with a ball of any height. Analysis revealed that this was due to the peeling between the anode and the light-emitting layer in the light-emitting device, leading to abnormalities in appearance and / or display. 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 it is conducted to the anode and the light-emitting layer in the light-emitting device, it causes the anode and the light-emitting layer to peel off, which can lead to other problems and cause the display to fail.

[0036] The above embodiments use a contrast display device including a cover glass 17 and a polarizing film 18 as an example. It is understood that some contrast display devices use a substrate, color filter layer, and black matrix instead of a cover glass and polarizing film, and an anti-glare film is applied to the substrate. However, such contrast display devices still experience film peeling or display defects when subjected to impact due to the close contact between the layers. Their test results are the same as in the table above, and they also fail the drop ball test. Therefore, existing OLED display devices suffer from the technical problem of display failure due to drop ball damage during the drop ball test.

[0037] This utility model provides a display panel and a display device to solve the above-mentioned technical problems.

[0038] Figure 2 This is a cross-sectional schematic diagram of the display panel provided in an embodiment of the present utility model. Figure 3 This is a planar schematic diagram of the color filter layer provided in an embodiment of the present invention. Figure 4 A perspective view of the pixel definition layer, the light emission layer, and the black matrix provided in an embodiment of this utility model. Figure 5 This is a cross-sectional schematic diagram of the cover plate provided in an embodiment of the present utility model. Figure 6 This is a schematic diagram of a ball drop test performed on a display panel according to an embodiment of the present invention.

[0039] like Figures 2 to 6 As shown, this utility model embodiment provides a display panel 2, which includes a first substrate 21, a light-emitting functional layer 24, an encapsulation layer 25, and a cover plate 26. The light-emitting functional layer 24 is disposed on one side of the first substrate 21, the encapsulation layer 25 is disposed on the side of the light-emitting functional layer 24 away from the first substrate 21, and the cover plate 26 is disposed on the side of the encapsulation layer 25 away from the light-emitting functional layer 24. The cover plate 26 includes a second substrate 261 and a color filter layer 262. The color filter layer 262 includes a plurality of color filters 262a and a black matrix 262b with different light-transmitting colors.

[0040] The black matrix 262b includes a flat portion 361 and a plurality of protrusions 362. The protrusions 362 protrude relative to the flat portion 361 toward the side closer to the encapsulation layer 25. The encapsulation layer 25 contacts the protrusions 362. In the region between the plurality of protrusions 362, there is a gap between the color resist 262a and the encapsulation layer 25.

[0041] This utility model provides a display panel in which a black matrix includes a flat portion and multiple protrusions. The protrusions protrude toward one side of the encapsulation layer relative to the flat portion, and the encapsulation layer contacts the protrusions. In the area between the multiple protrusions, a gap exists between the color resist and the encapsulation layer. When the cover side of the display panel is impacted, the impact force is buffered and released through the gap between the color resist and the encapsulation layer, preventing the impact force from being directly transmitted to the encapsulation layer and then to the light-emitting unit in this area. This prevents the pixel electrode from peeling off from the light-emitting layer or other problems from occurring, avoiding display failure caused by peeling off from the light-emitting layer during drop ball testing, and improving the yield of the display panel.

[0042] Specifically, there is a gap between the flat portion and the encapsulation layer.

[0043] Specifically, such as Figure 6 As shown, when the ball 28 falls onto the display panel, even if the second substrate 261 is deformed by the impact, the presence of the gap 27 allows for a distance between the deformed portion of the second substrate and the deformed portion of the color resist and the encapsulation layer 25. This prevents the impact force from being directly transmitted to the encapsulation layer and subsequently to the light-emitting layer and pixel electrode layer, causing display failure. The gap buffers and releases the impact force. Even if the impact point is located at the protrusion's location, since the protrusion corresponds to a non-light-emitting area, it will not cause display failure, thus improving the yield of the display panel. Furthermore, since the protrusion is formed using a black matrix, no additional film layer is required, reducing process steps.

[0044] Specifically, such as Figure 2 As shown, the display panel 2 includes a first substrate 21, a driving circuit layer 22, a light-emitting functional layer 24, an encapsulation layer 25, and a cover plate 26. The driving 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).

[0045] Specifically, the material of the first substrate can be either glass or polyimide.

[0046] Specifically, there are no other film layers between the encapsulation layer and the cover plate.

[0047] Specifically, the active layer can be made of either low-temperature polycrystalline silicon or metal oxide. The active layer may include a channel portion and a doped portion.

[0048] Specifically, the material of the first gate layer includes 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.

[0049] Specifically, the material of the second gate layer includes 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.

[0050] Specifically, the material of the first source and drain layer includes one or more of titanium, aluminum, copper, and silver, or the material of the first source and drain layer can be a stack of at least two of titanium, aluminum, copper, and silver.

[0051] Specifically, the material of the second source / drain layer includes 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.

[0052] Specifically, the pixel electrode layer may be made of one or more of indium tin oxide, silver, and magnesium, or the pixel electrode layer may be a stack of at least two of indium tin oxide, silver, and magnesium.

[0053] Specifically, the material of the second substrate includes glass.

[0054] Specifically, the cross-sectional shape of the portion of the protrusion that extends beyond the flat portion can be rectangular or trapezoidal.

[0055] Specifically, the accompanying drawings in this embodiment of the present invention illustrate a display panel comprising one active layer, two gate layers, and two source-drain layers. However, the embodiments of the present invention are not limited to this. For example, the display panel may comprise only one active layer, one gate layer, and one source-drain layer. In some display panels, to further reduce thickness, the gate layer and the source-drain layer may share a single metal layer. Alternatively, the display panel may comprise two active layers, three gate layers, or two or three source-drain layers, with the two active layers made of different materials. For example, one active layer may be made of low-temperature polysilicon, and the other active layer may be made of metal oxide, thereby reducing the power consumption of the display panel and improving its performance.

[0056] In some embodiments, such as Figure 3 As shown, the black matrix 262b includes multiple openings, the color resist 262a is disposed within the openings, and the protrusion 362 is disposed in the area between two adjacent rows of color resists 262a, and also in the area between two adjacent columns of color resists 262a. By placing the protrusion in the area between two adjacent rows of color resists and between two adjacent columns of color resists, the protrusion will not affect the light emission effect of the sub-pixel unit, thus avoiding a reduction in the light emission efficiency of the sub-pixel unit.

[0057] Specifically, some protrusions can be located in the area between two adjacent rows of color resists, and some protrusions can be located in the area between two adjacent columns of color resists, and some protrusions can be located in the area between two adjacent columns of color resists, with the protrusions and color resists located in the same row.

[0058] Specifically, it is understood that since a color resist is installed inside the opening, the opening is not shown in the attached drawings, and the shape of the opening can be determined based on the shape of the color resist.

[0059] In some embodiments, such as Figure 3 As shown, the color resist 262a includes multiple first color resists 311, multiple second color resists 312, and multiple third color resists 313 of different light-transmitting colors. The multiple first color resists 311 are arranged in the same column, the multiple second color resists 312 are arranged in the same column, and the multiple third color resists 313 are arranged in the same column. By arranging the first color resists, second color resists, and third color resists in the same column, the emission color of the sub-pixel units in the same column is made the same.

[0060] Specifically, a first color resistor, a second color resistor, and a third color resistor can be made into a repeating unit, and multiple repeating units can be arranged along the second direction, thereby sequentially setting multiple columns of first color resistors, second color resistors, and third color resistors.

[0061] Specifically, by placing multiple first color resists, multiple second color resists, and multiple third color resists in the same column, during inkjet printing to form the light-emitting layer, a column of light-emitting sub-pixels of the same color can be connected together. 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. Furthermore, by setting the color resists corresponding to the light-emitting sub-pixels, color purity is improved.

[0062] Specifically, the above embodiments are illustrated by taking the arrangement of multiple first color resists in the same column, multiple second color resists in the same column, and multiple third color resists in the same column as an example. However, the embodiments of this utility model are not limited to this. The first color resists and second color resists can be alternately arranged in the same column, and the third color resists can be arranged in another column, or the first color resists, second color resists, and third color resists can be alternately arranged in the same column.

[0063] Specifically, the light-transmitting colors of the first color resist, the second color resist, and the third color resist are red, green, and blue, respectively. However, the embodiments of this utility model are not limited to this. For example, the light-transmitting colors of the first color resist, the second color resist, and the third color resist can be red, blue, and green, respectively, or the light-transmitting colors of the first color resist, the second color resist, and the third color resist can be green, red, and blue, respectively.

[0064] In some embodiments, such as Figure 2 , Figure 4 As shown, the light-emitting functional layer 24 includes a pixel definition layer 242, which 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.

[0065] In this configuration, 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 of the protrusions 362 is disposed within the overlapping area of ​​the first pixel definition portion 341a and the second pixel definition portion 342a. By disposing at least one protrusion within the overlapping area of ​​the first and second pixel definition portions, the protrusion does 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.

[0066] Specifically, some protrusions can be located in the overlapping area of ​​the first pixel definition portion and the second pixel definition portion, while some protrusions can be located in the area of ​​the second pixel definition portion that does not intersect with the first pixel definition portion.

[0067] Specifically, such as Figure 4 As shown, 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. The first light-emitting layer 243a, the second light-emitting layer 243b, and the third light-emitting layer 243c are respectively disposed between multiple second pixel definition portions 342a. It can be seen that the protrusion 362 is disposed at the intersection of the first pixel definition portion and the second pixel definition portion 342a, thereby avoiding the protrusion from affecting the light emission effect of each sub-pixel unit.

[0068] Specifically, the light emission 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. However, the embodiments of this utility model are not limited to this. The light emission colors of the first light-emitting layer, the second light-emitting layer, and the third light-emitting layer can be red, blue, and green, or blue, green, and red, or other arrangements.

[0069] Specifically, it can be understood that the display panel includes multiple pixel units, each pixel unit includes a first sub-pixel unit, a second sub-pixel unit and a third sub-pixel unit, the pixel electrode layer includes multiple pixel electrodes, the pixel electrodes, the first light-emitting layer and the common electrode layer can form the first sub-pixel unit, the pixel electrodes, the second light-emitting layer and the common electrode layer can form the second sub-pixel unit, and the pixel electrodes, the third light-emitting layer and the common electrode layer can form the third sub-pixel unit.

[0070] Specifically, the light emission colors of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit can be red, blue, and green, or blue, green, and red, or other arrangements, respectively.

[0071] 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 in multiple places. Each of the protrusions 362 is disposed within the overlapping area of ​​the first pixel definition portion 341a and the second pixel definition portion 342a. By ensuring that each protrusion is disposed within the overlapping area of ​​the first and second pixel definition portions, the protrusions are further prevented from affecting the light emission effect of the sub-pixel unit, thus avoiding a reduction in the light emission efficiency of the sub-pixel unit.

[0072] Specifically, each overlapping area of ​​the first pixel definition portion and the second pixel definition portion is provided with a protrusion.

[0073] In some embodiments, the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer. The first inorganic layer is disposed between the organic layer and the light-emitting functional layer, the organic layer is disposed between the first and second inorganic layers, and the second inorganic layer is disposed between the organic layer and the cover plate. By including the first inorganic layer, the organic layer, and the second inorganic layer in the encapsulation layer, the organic layer can fill the first inorganic layer, allowing the second inorganic layer to be relatively flat during its formation. The contact position between the second inorganic layer and the protrusion is also relatively flat, preventing slippage when the cover plate contacts the encapsulation layer, or direct contact between the second inorganic layer and the color resist due to unevenness. The gap between the color resist and the encapsulation layer buffers the impact force, preventing the impact force from being directly transmitted to the encapsulation layer when the cover plate is impacted, thus preventing display panel failure.

[0074] 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.

[0075] In some embodiments, the display panel further includes an anti-glare film disposed on the side of the second substrate away from the color filter layer.

[0076] In some embodiments, such as Figure 3 , Figure 5 As shown, in the first direction X, the ratio of the distance L3 between two adjacent protrusions 362 to the maximum width L1 of the protrusion 362 is less than or equal to 30. By making the ratio of the distance between two adjacent protrusions to the maximum width of the protrusion less than or equal to 30, the width of the protrusion is larger when the pixel opening is larger, that is, the area of ​​the sub-pixel unit is larger, and the buffering effect against impact is better.

[0077] Specifically, when the protrusion is located in the overlapping area of ​​the first pixel definition part and the second pixel definition part, the larger the area of ​​the sub-pixel unit, the larger the distance between the two overlapping areas of the first pixel definition part and the second pixel definition part. At this time, the width of the protrusion can be increased, so that the support effect of the protrusion is better. The protrusion and the gap are used for buffering to prevent the display panel from failing.

[0078] In some embodiments, the width L2 of the protrusion 362 on the side near the second substrate 261 is greater than the width L1 of the protrusion 362 on the side near the encapsulation layer 25.

[0079] In some embodiments, such as Figure 5 As shown, the ratio of the width L2 of the protrusion 362 near the second substrate 261 to the width L1 of the protrusion 362 near the encapsulation layer 25 is less than or equal to 2. By making the ratio of the width of the protrusion near the second substrate to the width of the protrusion near the encapsulation layer less than or equal to 2, problems such as poor support effect or slippage caused by the protrusion being too small can be avoided, thereby improving the yield of the display panel.

[0080] In some embodiments, such as Figure 5 As shown, the minimum width L1 of the protrusion 362 on the side near the encapsulation layer 25 is greater than or equal to 3 micrometers. By making the minimum width of the protrusion on the side near the encapsulation layer greater than or equal to 3 micrometers, problems such as poor support effect or slippage caused by the protrusion being too small can be avoided, thereby improving the yield of the display panel.

[0081] In some embodiments, such as Figure 5As shown, the thickness H1 of the portion of the protrusion 362 that extends beyond the flat portion 361 is greater than or equal to 1 micrometer. By making the thickness of the portion of the protrusion that extends beyond the flat portion greater than or equal to 1 micrometer, the gap between the color resist and the encapsulation layer is larger. Therefore, when the cover plate is impacted, even if the cover plate deforms, it will not squeeze the area of ​​the encapsulation layer where the protrusion is not provided, thereby buffering and releasing the impact force and preventing the display panel from failing.

[0082] Specifically, the thickness of the portion of the protrusion 362 that extends beyond the flat portion 361 can be greater than or equal to 2 micrometers.

[0083] Specifically, when forming the protrusions, a black matrix can be formed using a halftone process.

[0084] Meanwhile, this utility model embodiment provides a display device, which includes a display panel as described in any of the above embodiments.

[0085] Specifically, the display panel can be an organic light-emitting diode (OLED) display panel.

[0086] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0087] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0088] The embodiments, implementation methods, and related technical features of this utility model can be combined and substituted for each other without conflict.

[0089] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A display panel, characterized in that, include: First substrate; A light-emitting functional layer is disposed on one side of the first substrate; An encapsulation layer is disposed on the side of the light-emitting functional layer away from the first substrate; A cover plate is disposed on the side of the encapsulation layer away from the light-emitting functional layer. The cover plate includes a second substrate and a color filter layer. The color filter layer includes multiple color filters of different light-transmitting colors and a black matrix. The black matrix includes a flat portion and multiple protruding portions. The protruding portions protrude relative to the flat portion towards the side closer to the encapsulation layer. The encapsulation layer contacts the protruding portions. In the region between the multiple protruding portions, there is a gap between the color resist and the encapsulation layer.

2. The display panel according to claim 1, characterized in that, The black matrix includes multiple openings, the color resist is disposed within the openings, the protrusion is disposed in the area between two adjacent rows of color resists, and the protrusion is disposed in the area between two adjacent columns of color resists.

3. The display panel according to claim 2, characterized in that, The color resist includes multiple first color resists, multiple second color resists, and multiple third color resists of different light-transmitting colors. The multiple first color resists are arranged in the same column, the multiple second color resists are arranged in the same column, and the multiple third color resists are arranged in the same column.

4. The display panel according to claim 2, characterized in that, The light-emitting functional layer includes a pixel definition layer, which includes a first pixel sub-layer and a second pixel sub-layer. The first pixel sub-layer includes a plurality of first pixel definition portions spaced apart along a first direction, and the first pixel definition portions extend along a second direction. The second pixel sub-layer includes a plurality of second pixel definition portions spaced apart along the second direction, and the second pixel definition portions extend along the first direction. Wherein, the projection of the first pixel definition portion on the first substrate overlaps with the projection of the second pixel definition portion on the first substrate, and at least one of the protrusions is disposed in the overlapping area of ​​the first pixel definition portion and the second pixel definition portion.

5. The display panel according to claim 4, characterized in that, The projection of the first pixel definition portion onto the first substrate and the projection of the second pixel definition portion onto the first substrate overlap in multiple places, and each of the protrusions is disposed in the overlapping area of ​​the first pixel definition portion and the second pixel definition portion.

6. The display panel according to any one of claims 1 to 5, characterized in that, In the first direction, the ratio of the distance between two adjacent protrusions to the maximum width of the protrusion is less than or equal to 30.

7. The display panel according to any one of claims 1 to 5, characterized in that, The ratio of the width of the protrusion on the side closer to the second substrate to the width of the protrusion on the side closer to the encapsulation layer is less than or equal to 2.

8. The display panel according to any one of claims 1 to 5, characterized in that, The minimum width of the protrusion on the side closest to the encapsulation layer is greater than or equal to 3 micrometers.

9. The display panel according to any one of claims 1 to 5, characterized in that, The thickness of the portion of the protrusion that extends beyond the flat portion is greater than or equal to 1 micrometer.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 9.

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