Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and aims to solve the problem that the deflection efficiency of liquid crystal molecules is influenced by a transverse electric field generated at a groove of a pixel electrode due to a storage capacitor in related technologies. The display panel comprises an array substrate, a color film substrate and a liquid crystal layer located between the array substrate and the color film substrate. The array substrate comprises a first substrate, a first electrode layer, an interlayer dielectric layer and a second electrode layer, wherein the first electrode layer, the interlayer dielectric layer and the second electrode layer are located on one side of the first substrate and sequentially stacked. The first electrode layer comprises a plurality of first electrodes which are mutually spaced; the second electrode layer comprises a plurality of second electrodes which are arranged at intervals, and each second electrode is at least partially overlapped with the corresponding first electrode. The color film substrate comprises a second substrate and a third electrode layer; the third electrode layer is located on the second substrate and is provided with a plurality of groove groups, and each groove group comprises a plurality of grooves. The orthographic projection of each second electrode on the second substrate covers the orthographic projection of the corresponding groove group on the second substrate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] At present, the VA (Vertical Alignment) type display panel is widely used due to its high contrast and other advantages. The traditional VA type display panel uses two layers of metal electrodes to form a storage capacitor, and the two layers of metal electrodes are not transparent, which reduces the aperture ratio of the pixel in the display panel. If the area of the metal electrode is reduced, the capacitance value of the storage capacitor will decrease, which will affect the charge retention rate and dynamic refresh performance (such as Freesync level) of the display panel.

[0003] In the related art, the array substrate includes a pixel electrode and a transparent electrode which has an overlap with the pixel electrode, thereby forming a storage capacitor. In addition, the pixel electrode usually needs to be provided with a groove (also referred to as a slit) to control the pre-tilt angle of the liquid crystal molecules, and the storage capacitor will cause a strong horizontal electric field between the grooves of the pixel electrode, which will interfere with the deflection efficiency of the liquid crystal molecules, and thus adversely affect the picture display of the display panel. SUMMARY

[0004] Embodiments of the present application provide a display panel and a display device to at least alleviate the problem that the storage capacitor causes a horizontal electric field at the groove of the pixel electrode, which affects the deflection efficiency of the liquid crystal molecules in the related art.

[0005] In one aspect, an embodiment of the present application provides a display panel, comprising: an array substrate and a color film substrate arranged oppositely, and a liquid crystal layer between the array substrate and the color film substrate; The array substrate comprises: a first substrate; a first electrode layer on the first substrate, comprising a plurality of first electrodes spaced from each other; an interlayer dielectric layer on the first electrode layer; a second electrode layer on a side of the interlayer dielectric layer away from the first electrode layer, the second electrode layer comprising a plurality of second electrodes spaced from each other, each second electrode at least partially overlapping with a corresponding first electrode; The color film substrate comprises: a second substrate; a third electrode layer on the second substrate, the third electrode layer being provided with a plurality of groove groups, each groove group comprising a plurality of grooves; wherein a projection of each second electrode on the second substrate covers a projection of a corresponding groove group on the second substrate.

[0006] In some embodiments, the third electrode layer comprises a plurality of third electrodes and a connecting portion connecting any two adjacent third electrodes, each of the groove groups is located in a corresponding third electrode.

[0007] In some embodiments, each of the third electrodes comprises at least one electrode branch unit, each of the electrode branch units comprises a plurality of electrode branches spaced apart from each other and extending in the same direction, and a groove is arranged between any two adjacent electrode branches.

[0008] In some embodiments, each of the third electrodes comprises four electrode branch units and two electrode stems, the two electrode stems are arranged in a cross manner and define four electrode branch regions, each of the electrode branch units is located in a corresponding electrode branch region; wherein the extending directions of two electrode branches located on the same side of any one of the electrode stems and in different electrode branch units are different.

[0009] In some embodiments, the two electrode stems comprise a first electrode stem and a second electrode stem, the first electrode stem and a plurality of electrode branches located on the same side of the second electrode stem are connected to the connecting portion.

[0010] In some embodiments, the extending directions of the electrode branches are respectively the same as the included angle between the extending direction of the same electrode stem.

[0011] In some embodiments, the first electrode and the second electrode are plate-shaped electrodes; and / or, the first electrode and the second electrode are transparent electrodes, and the third electrode is a transparent electrode layer.

[0012] In some embodiments, the array substrate further comprises a driving circuit layer on the first substrate, the driving circuit layer comprises a plurality of driving circuits, and each of the second electrodes is connected to a corresponding driving circuit.

[0013] In some embodiments, the array substrate further comprises a color resist layer on the side of the driving circuit layer away from the first substrate, and the first electrode layer is arranged on the side of the color resist layer away from the driving circuit layer.

[0014] In another aspect, the embodiments of the present application also provide a display device, which comprises the display panel as described in any of the above embodiments.

[0015] For the display panel provided by the embodiments of the present application, since the first electrode layer includes a plurality of first electrodes spaced from each other, the second electrode layer includes a plurality of second electrodes spaced from each other, and each second electrode at least partially overlaps with the corresponding first electrode, the storage capacitor formed by the overlapping of the two can have a relatively large capacitance value, so as to guarantee the charge retention rate and dynamic refresh performance of the display panel. In addition, since the third electrode layer is provided with a plurality of groove groups, each groove group includes a plurality of grooves, and the orthographic projection of each second electrode on the second substrate covers the orthographic projection of the corresponding groove group on the second substrate, the pre-tilt angle of the liquid crystal molecules in the liquid crystal layer can be controlled by the grooves in the third electrode layer, so as to ensure the deflection efficiency of the liquid crystal molecules. At the same time, since the grooves in the third electrode layer are far away from the storage capacitor, the influence of the storage capacitor on the deflection efficiency of the liquid crystal molecules can be effectively alleviated. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a structural schematic diagram of a display panel according to the related art; Figure 2 is a structural schematic diagram of a display panel provided by some embodiments of the present application; Figure 3 is a structural schematic diagram of a second electrode layer according to some embodiments of the present application; Figure 4 is a structural schematic diagram of a third electrode layer according to some embodiments of the present application; Figure 5 is a structural schematic diagram of a third electrode and a groove group according to some embodiments of the present application; Figure 6 is a structural schematic diagram of a display device provided by some embodiments of the present application. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described below in combination with the drawings in the embodiments of the present application. The described technical solutions are only used to explain and describe the ideas of the present application, and should not be regarded as a limitation on the protection scope of the present application.

[0019] In the description of the present application, it needs to be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" and the like do not represent any order, number or importance, but are only used to distinguish different technical features. The term "multiple" and the like represent two or more, unless otherwise explicitly limited.

[0020] "A and / or B" includes the following three combinations: only A, only B, and a combination of A and B.

[0021] In the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments. The embodiments, implementation manners, examples and related technical features of the present application can be combined, replaced with each other without conflict.

[0022] In the related art, as shown in Figure 1 , the display panel usually includes an array substrate, a color film substrate and liquid crystal molecules located between the two.

[0023] Among them, the array substrate includes a pixel electrode 12' and a transparent electrode 11' which has an overlap with the pixel electrode 12', so as to form a storage capacitor. The pixel electrode 12' and the transparent electrode 11' are both made of transparent material, which can effectively improve the influence of the storage capacitor on the aperture ratio of the pixel in the display panel.

[0024] In addition, the pixel electrode 12' usually needs to be provided with a groove 120' (also called a slit) to control the pre-tilt angle of the liquid crystal molecules, which causes a strong transverse electric field between the grooves 120' of the pixel electrode 12', which interferes with the deflection efficiency of the liquid crystal molecules, and further adversely affects the picture display of the display panel.

[0025] Based on this, some embodiments of the present application provide a display panel and a display device comprising the same.

[0026] As shown in Figure 2 , the display panel 1000 includes an array substrate 100 and a color film substrate 200 arranged opposite to each other, and a liquid crystal layer located between the array substrate 100 and the color film substrate 200.

[0027] The array substrate 100 comprises a first substrate 11, a first electrode layer 12, an interlayer dielectric layer 13 and a second electrode layer 14; the first electrode layer 12 is located on the first substrate 11 and comprises a plurality of first electrodes 121 spaced from each other; the interlayer dielectric layer 13 is located on the first electrode layer 12; the second electrode layer 14 is located on a side of the interlayer dielectric layer 13 away from the first electrode layer 12, and the second electrode layer 14 comprises a plurality of second electrodes 141 spaced from each other, each second electrode 141 at least partially overlaps a corresponding first electrode 121.

[0028] The color film substrate 200 comprises a second substrate 21 and a third electrode layer 22. The third electrode layer 22 is located on the second substrate 21, and the third electrode layer 22 is provided with a plurality of groove groups St, each groove group St comprising a plurality of grooves St1 (also referred to as slits). Wherein, a projection of each second electrode 141 on the second substrate 21 covers a projection of a corresponding groove group St on the second substrate 21.

[0029] For the display panel 1000 provided by the embodiments of the present application, since the first electrode layer 12 comprises a plurality of first electrodes 121 spaced from each other, the second electrode layer 14 comprises a plurality of second electrodes 141 spaced from each other, and each second electrode 141 at least partially overlaps a corresponding first electrode 121, the storage capacitor formed by the overlap of the two can have a relatively large capacitance value, so as to guarantee the charge retention rate and dynamic refresh performance of the display panel 1000. In addition, since the third electrode layer 22 is provided with a plurality of groove groups St, each groove group St comprises a plurality of grooves St1, and a projection of each second electrode 141 on the second substrate 21 covers a projection of a corresponding groove group St on the second substrate 21, the grooves St1 in the third electrode layer 22 can be used to control the pre-tilt angle of the liquid crystal molecules in the liquid crystal layer, thereby ensuring the deflection efficiency of the liquid crystal molecules. At the same time, since the grooves St1 in the third electrode layer 22 are away from the storage capacitor, the influence of the storage capacitor on the deflection efficiency of the liquid crystal molecules can be effectively alleviated. Therefore, the display panel 1000 provided by the embodiments of the present application can effectively control the pre-tilt angle of the liquid crystal molecules on the one hand, and avoid the influence of the existence of the storage capacitor on the deflection efficiency of the liquid crystal molecules; on the other hand, it can also ensure that the second electrode 141 and the first electrode 121 have a relatively large overlapping area, thereby increasing the capacitance value of the storage capacitor.

[0030] The display panel and display device provided by the embodiments of the present application will be described below in combination with specific embodiments, and the specific description is as follows.

[0031] Some embodiments of the present application provide a display panel, such as Figure 2As shown, the display panel 1000 includes an array substrate 100 and a color film substrate 200 arranged oppositely, and a liquid crystal layer between the array substrate 100 and the color film substrate 200. The liquid crystal layer includes a plurality of liquid crystal molecules.

[0032] The array substrate 100 includes a first substrate 11, and a first electrode layer 12, an interlayer dielectric layer 13 and a second electrode layer 14 arranged in sequence on the first substrate 11. The interlayer dielectric layer 13 is made of insulating material, thereby realizing insulation between the first electrode layer 12 and the second electrode layer 14. The first electrode layer 12 is located on the side close to the first substrate 11, and the first electrode layer 12 includes a plurality of first electrodes 121 spaced from each other. The second electrode layer 14 includes a plurality of second electrodes 141 spaced from each other, and each second electrode 141 at least partially overlaps with a corresponding first electrode 121. For example, each second electrode 141 has an overlap with one first electrode 121, and the overlapping parts of the first electrode 121 and the second electrode 141 constitute two plates of a storage capacitor.

[0033] The color film substrate 200 includes a second substrate 21 and a third electrode layer 22. The third electrode layer 22 is located on the second substrate 21, and the third electrode layer 22 is provided with a plurality of trench groups St, each trench group St including a plurality of trenches St1. Wherein, the orthographic projection of each second electrode 141 on the second substrate 21 covers the orthographic projection of a corresponding trench group St on the second substrate 21.

[0034] The third electrode layer 22 can be divided into a plurality of third electrodes based on the plurality of trench groups St, and each trench group St is located on one third electrode. Since the orthographic projection of each second electrode 141 on the second substrate 21 covers the orthographic projection of a corresponding trench group St on the second substrate 21, this can make the plurality of second electrodes 141 and the plurality of third electrodes one-to-one corresponding, thereby facilitating the formation of stable electric field distribution between each second electrode 141 and the corresponding third electrode. In addition, the plurality of trenches St1 in each trench group St can control the pre-tilt angle of the liquid crystal molecules, thereby optimizing the display effect of the display panel 1000.

[0035] The display panel 1000 includes a plurality of sub-pixels, and the first electrode 121 serves as a pixel electrode of a sub-pixel. By applying a pixel voltage to the first electrode 121 and a common voltage to the third electrode layer 22, an electric field can be formed between the first electrode 121 and the third electrode layer 22, thereby controlling the deflection of the liquid crystal molecules located therebetween to change the light transmission state of the sub-pixel. By independently controlling the state of the plurality of sub-pixels in the display panel 1000, the picture display function can be realized.

[0036] For the display panel 1000 provided in the embodiments of the present application, the groove group St is formed on the third electrode layer 22, so that the pre-tilt angle of the liquid crystal molecules can be controlled, thereby optimizing the display effect of the display panel 1000; and the second electrode 141 can be shaped as a plate electrode, thereby facilitating the increase of the capacitance value of the storage capacitor, so as to guarantee the charge retention rate and dynamic refresh performance of the display panel 1000.

[0037] In some examples, as shown in FIG. 1, the first electrode 121 and the second electrode 141 are both plate electrodes. In this way, the facing area between the first electrode 121 and the second electrode 141 can be effectively increased, thereby increasing the capacitance value of the storage capacitor, so as to improve the charge retention rate and dynamic refresh performance of the display panel 1000. Figure 3

[0038] It is worth noting that, in the description of the present application, the "plate electrode" refers to the electrode being a continuous planar structure. Specifically, the edge of the electrode is enclosed in a regular shape, for example, a rectangle, a rounded rectangle, etc. In addition, the electrode is not provided with recesses, gaps or protrusions.

[0039] In addition, the second electrode layer 14 further includes a connection electrode 142 connected with the second electrode 141. The connection electrode 142 is located on one side of the second electrode 141 and is connected with the corresponding driving circuit.

[0040] In some examples, the first electrode 121 and the second electrode 141 are transparent electrodes, and the third electrode layer 22 is a transparent electrode layer. That is, the first electrode layer 12, the second electrode layer 14 and the third electrode layer 22 are all made of transparent materials. For example, the first electrode layer 12, the second electrode layer 14 and the third electrode layer 22 are each made of transparent materials such as indium tin oxide or indium zinc oxide.

[0041] In some embodiments, please continue to refer to Figure 2 The array substrate 100 further includes a driving circuit layer 15 located on the first substrate 11, and the driving circuit layer 15 includes a plurality of driving circuits, and each second electrode 141 is connected with a corresponding driving circuit. For example, the plurality of second electrodes 141 are in one-to-one correspondence with the plurality of driving circuits, and the driving circuit can control whether the second electrode 141 corresponding thereto inputs a pixel voltage.

[0042] ​Each drive circuit includes a plurality of thin film transistors TFTs, which include a gate electrode, an active layer, a source electrode, and a drain electrode disposed on one side of the first substrate 11. The film layer where the gate electrode is located is a gate electrode layer 151, the film layer where the active layer is located is an active layer 153, and the film layer where the source electrode and the drain electrode are located is a source-drain electrode layer 154. The gate electrode layer 151, the active layer 153, and the source-drain electrode layer 154 are sequentially disposed in a direction away from the first substrate 11. Among them, a gate insulating layer 152 is provided between the gate electrode layer 151 and the active layer 153, and a passivation layer 155 is provided on the side of the source-drain electrode layer 154 away from the first substrate 11. In some examples, the active layer 153 can be an N-type semiconductor.

[0043] In some embodiments, please refer to Figure 2 The array substrate 100 further includes a color resistance layer 16 on the side of the drive circuit layer 15 away from the first substrate 11, and the first electrode layer 12 is disposed on the side of the color resistance layer 16 away from the drive circuit layer 15.

[0044] In the present embodiment, by integrating the color resistance layer 16 in the array substrate 100, accurate alignment can be formed between the color resistance blocks in the color resistance layer 16 and the second electrodes 141 in the second electrode layer 14, thereby avoiding the problems of alignment deviation between the color film substrate and the array substrate when they are bonded, and thus reducing the pixel aperture ratio and the contrast ratio, and other problems in the related art. Therefore, in the present embodiment, the pixel aperture ratio and the contrast ratio of the display panel 1000 can be effectively improved. In addition, since the first electrode layer 12 is disposed on the side of the color resistance layer 16 away from the drive circuit layer 15, the spacing between the first electrode layer 12 and the second electrode layer 14 can be small, thereby facilitating the increase of the capacitance value of the storage capacitor.

[0045] In some examples, the color resistance layer 16 can include red color resistance blocks, green color resistance blocks, and blue color resistance blocks, the red color resistance blocks can transmit red light, the green color resistance blocks can transmit green light, and the blue color resistance blocks can transmit blue light. In this way, color picture display of the display panel 1000 can be achieved.

[0046] In some examples, support columns 31 are further provided between the array substrate 100 and the color film substrate 200, which can maintain a uniform gap between the array substrate 100 and the color film substrate 200, thereby avoiding the problems of display failure such as water ripples or dark spots of the display panel 1000 under external force.

[0047] In addition, a black matrix can be further provided on the color film substrate 200, which can effectively separate the pixels and prevent color crosstalk. The black matrix can also block stray light and improve the display effect of the display panel 1000.

[0048] In some embodiments, asFigure 4 and Figure 5 As shown in FIG. 1, the third electrode layer 22 includes a plurality of third electrodes 221 and a plurality of connecting portions 222 connecting any two adjacent third electrodes 221. Each trench group St is located in a corresponding third electrode 221.

[0049] In this case, the plurality of third electrodes 221 and the plurality of trench groups St can be one-to-one corresponding. Since the orthographic projection of each second electrode 141 on the second substrate 21 covers the orthographic projection of the corresponding trench group St on the second substrate 21, good alignment between the second electrode 141 and the third electrode 221 can be achieved, thereby facilitating the formation of a stable electric field distribution between the second electrode 141 and the third electrode 221. In addition, since any two adjacent third electrodes 221 are connected by the connecting portion 222, the in-plane uniformity of the voltage input to the third electrode 221 can be improved, and the display uniformity of the display panel 1000 can be improved.

[0050] In some embodiments, as shown in FIG. 1, each third electrode 221 includes at least one electrode branch unit 2211, and each electrode branch unit 2211 includes a plurality of electrode branches 22110 spaced apart from each other and extending in the same direction. A trench St1 is arranged between any two adjacent electrode branches 22110. Figure 5

[0051] In some examples, each third electrode 221 includes four electrode branch units 2211 and two electrode trunks 2212. The two electrode trunks 2212 are arranged in a cross manner and define four electrode branch regions, and each electrode branch unit 2211 is located in one electrode branch region. For example, the two electrode trunks 2212 include a first electrode trunk 22121 and a second electrode trunk 22122. The first electrode trunk 22121 and the second electrode trunk 22122 are perpendicular to each other and divide the third electrode 221 into four quadrants, and each electrode branch unit 2211 is located in one quadrant.

[0052] ​In the present example, the extension directions of the two electrode branches 22110 located in the electrode branch units 2211 on the same side of any one electrode stem 2212 are different. For example, for the two electrode branch units 2211 located on the left side of the first electrode stem 22121, the extension direction of one electrode branch 22110 in the upper left electrode branch unit 2211 is different from the extension direction of one electrode branch 22110 in the lower left electrode branch unit 2211. In this case, the extension direction of the groove St1 in the upper left electrode branch unit 2211 is different from the extension direction of the groove St1 in the lower left electrode branch unit 2211, so that the liquid crystal molecules in different regions can exhibit different pre-tilt angles, thereby forming a multi-domain structure. When viewing the display screen of the display panel 1000 from different angles, the liquid crystal molecules in one domain can always match the viewing direction, thereby effectively reducing the loss of brightness and color deviation caused by the change of viewing angle, and widening the viewing angle range of the display panel 1000.

[0053] In some examples, the first electrode stem 22121 and the plurality of electrode branches 22110 located on the same side of the second electrode stem 22122 are connected with the connecting part 222. For example, the first electrode stem 22121 extends in the horizontal direction, and the second electrode stem 22122 extends in the vertical direction. The upper side end of the first electrode stem 22121 and the plurality of electrode branches 22110 located on the upper side of the second electrode stem 22122 are connected with the connecting part 222.

[0054] In this way, the connecting area of the connecting part 222 and the third electrode 221 can be increased, thereby facilitating the further improvement of the in-plane uniformity of the voltage input to the third electrode 221 and the display uniformity of the display panel 1000.

[0055] In some examples, the second electrode stem 22122 and the plurality of electrode branches 22110 located on the same side of the first electrode stem 22121 are connected with the connecting part 222. For example, the left side end of the second electrode stem 22122 and the plurality of electrode branches 22110 located on the left side of the first electrode stem 22121 are connected with the connecting part 222.

[0056] In some embodiments, please continue to refer to Figure 5The extension direction of each electrode branch 22110 is at the same angle with the extension direction of the same electrode stem 2212. It is worth mentioning that the angle is the minimum angle between the extension direction of any electrode branch 22110 and the extension direction of the electrode stem 2212. For example, when one electrode branch 22110 has complementary angles 45° and 135° with the extension direction of the electrode stem 2212, the angle between the extension direction of the electrode branch 22110 and the extension direction of the electrode stem 2212 is 45°.

[0057] Exemplarily, the first electrode branch 22110 located at the upper left of the second electrode stem 22122 has a first angle with the second electrode stem 22122, and the second electrode branch 22110 located at the upper right of the second electrode stem 22122 has a second angle with the second electrode stem 22122, and the first angle and the second angle are equal in size.

[0058] In this way, the symmetry of the electric field distribution between the second electrode 141 and the third electrode 221 can be effectively improved, so that the arrangement density and deflection amplitude of the liquid crystal molecules in each direction are consistent, thereby ensuring the picture display effect of the display panel 1000.

[0059] In some examples, the angle between the extension direction of any electrode branch 22110 and the extension direction of the first electrode stem 22121 is 45°, and the angle between the extension direction of any electrode branch 22110 and the extension direction of the second electrode stem 22122 is also 45°. Of course, the angle between the extension direction of any electrode branch 22110 and the extension direction of the first electrode stem 22121 can also be other angles, which are not limited by the embodiments of the present application.

[0060] Some embodiments of the present application also provide a display device, as shown in the figure, the display device 2000 comprises the display panel 1000 described in any of the above embodiments. Figure 6

[0061] Since the display device 2000 comprises the display panel 1000, the display device 2000 has the technical effects of the display panel 1000, which will not be described here.

[0062] In some examples, the display device 2000 further comprises a backlight module 300 located on one side of the display panel 1000 and a frame 201 for fixing the display panel 1000 and the backlight module 300. The backlight module 300 can provide a backlight source for the display panel 1000, and the frame 201 can provide good fixation and protection for the display panel 1000 and the backlight module 300.

[0063] ​The above describes the embodiments of the present application in detail, and the principles and implementation manners of the present application are described by applying specific examples; the above embodiment description is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application; and in summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A display panel, characterized in that, include: An array substrate and a color filter substrate disposed opposite to each other, and a liquid crystal layer located between the array substrate and the color filter substrate; The array substrate includes: First substrate; A first electrode layer, located on the first substrate, includes a plurality of mutually spaced first electrodes; An interlayer dielectric layer is located on the first electrode layer; The second electrode layer is located on the side of the interlayer dielectric layer opposite to the first electrode layer. The second electrode layer includes a plurality of mutually spaced second electrodes, and each second electrode at least partially overlaps with the corresponding first electrode. The color filter substrate includes: Second substrate; A third electrode layer is located on the second substrate, and the third electrode layer has a plurality of trench groups, each of the trench groups including a plurality of trenches; In this case, the orthographic projection of each second electrode on the second substrate covers the orthographic projection of the corresponding trench group on the second substrate.

2. The display panel according to claim 1, characterized in that, The third electrode layer includes a plurality of third electrodes and a connection portion connected to any two adjacent third electrodes, and each trench group is located within the corresponding third electrode.

3. The display panel according to claim 2, characterized in that, Each of the third electrodes includes at least one electrode branch unit, each electrode branch unit includes multiple electrode branches spaced apart from each other and extending in the same direction, and a groove is provided between two adjacent electrode branches.

4. The display panel according to claim 3, characterized in that, Each of the third electrodes includes four electrode branch units and two electrode trunks. The two electrode trunks are intersected and define four electrode branch regions. Each electrode branch unit is located within one of the electrode branch regions. Wherein, the two electrode branches located on the same side of any of the electrode trunks and in different electrode branch units extend in different directions.

5. The display panel according to claim 4, characterized in that, The two electrode trunks include a first electrode trunk and a second electrode trunk, and the first electrode trunk and a plurality of electrode branches located on the same side of the second electrode trunk are all connected to the connecting portion.

6. The display panel according to claim 4, characterized in that, The extension direction of each electrode branch has the same angle as the extension direction of the same electrode trunk.

7. The display panel according to any one of claims 1-6, characterized in that, The first electrode and the second electrode are plate-shaped electrodes; and / or The first electrode and the second electrode are transparent electrodes, and the third electrode is a transparent electrode layer.

8. The display panel according to any one of claims 1-6, characterized in that, The array substrate further includes a driving circuit layer located on the first substrate, the driving circuit layer including a plurality of driving circuits, and each second electrode is connected to the corresponding driving circuit.

9. The display panel according to claim 8, characterized in that, The array substrate further includes a color resist layer located on the side of the driving circuit layer opposite to the first substrate, and the first electrode layer is disposed on the side of the color resist layer opposite to the driving circuit layer.

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

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