Display panel and display device
By setting the protruding part and the hollow part in the array substrate of the display panel and setting the second sub-layer with the same refractive index, the gathering and brightness of the rainbow pattern are solved, and the visual effect and driving safety of the display panel are improved.
Patent Information
- Application Number
- CN202510446453.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2025-06-17
Smart Images
Figure CN120161655A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of display technologies, and particularly to a display panel and a display device. Background Art
[0002] When light irradiates a thin film with a certain thickness, part of the light is reflected and part of the light is refracted. The refracted light is reflected and refracted again at the lower surface of the thin film. The reflected light from the lower surface is refracted through the upper surface again, and finally a series of parallel light beams are formed on the upper surface. Due to the optical path difference of these parallel light beams, light interference is caused. When the light source emits light with many frequency components, each single-frequency component of light (corresponding to a certain color) will generate a corresponding set of fringes, and these fringes overlap to present colored fringes, reducing the visual effect. Currently, thin film technology is applied more and more widely in display panels. The thin films in the display panel show colored fringes due to light interference, affecting the user's visual experience. If the thin film is applied to the windshield of a car, the appearance of colored fringes on the windshield will affect driving safety.
[0003] Therefore, how to improve the rainbow patterns in the display panel and reduce their aggregation and brightness has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention
[0004] To solve the above technical problems, the present disclosure provides a display panel and a display device for improving rainbow patterns and reducing their aggregation and brightness.
[0005] In a first aspect, the present disclosure provides a display panel, including: an array substrate, and a color film substrate disposed in a cell with the array substrate, where a liquid crystal layer is included between the array substrate and the color film substrate; the array substrate includes a substrate, a gate insulating layer, an interlayer insulating layer, a planarization layer, a first electrode layer, and a second electrode layer disposed along a first direction; the first direction is perpendicular to the plane where the substrate is located; along a direction parallel to the plane where the substrate is located, the second electrode layer includes a plurality of electrode units arranged in an array, and the electrode unit includes a hollowed-out portion; the interlayer insulating layer includes a first sub-layer and a second sub-layer, the first sub-layer is located on a side of the gate insulating layer away from the substrate, and the second sub-layer is located on a side of the first sub-layer facing the first electrode layer; along a direction parallel to the plane where the substrate is located, the second sub-layer includes a plurality of protruding portions arranged at intervals, and along the first direction, the protruding portion and the hollowed-out portion at least partially overlap.
[0006] In a second aspect, the present disclosure provides a display device including the display panel as described in the first aspect.
[0007] The technical solution provided by the embodiments of the present disclosure has the following advantages compared with the prior art: By providing a protrusion in the second sub-layer corresponding to the hollow portion in the first direction, film layer complementarity is formed, and the film layer stacking situation corresponding to the hollow portion and the electrode unit entity in the first direction is made as consistent as possible. When external light enters the display panel, it is beneficial to reduce the aggregation of rainbow patterns caused by regional film layer differences in the array substrate and improve the unevenness of reflected light and the refractive index of the surface film layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure and, together with the specification, are used to explain the principles of the present disclosure.
[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.
[0010] Figure 1 Shown is a schematic diagram of the film layer structure of a display panel provided by the prior art;
[0011] Figure 2 Shown as Figure 1 a schematic diagram of the film layer structure of the array substrate in
[0012] Figure 3 For Figure 2 a schematic diagram of the shape of the second electrode layer in
[0013] Figure 4 Shown is a schematic diagram of the structure of a display panel provided by the embodiments of the present disclosure;
[0014] Figure 5 For Figure 4 a plan view of the array substrate in
[0015] Figure 6 For Figure 5 a schematic diagram of the film layer structure along the A-A' cross-section;
[0016] Figure 7 Shown is a diagram of the relative position relationship between the hollow portion and the protrusion;
[0017] Figure 8 Shown as Figure 5 a schematic diagram of the film layer structure along the B-B' cross-section in
[0018] Figure 9 Shown is a diagram of the relative position relationship between a light-shielding portion and a drain provided by the embodiments of the present disclosure;
[0019] Figure 10 The figure shows a schematic plan view of a hollowed-out area in the second direction provided by an embodiment of the present disclosure;
[0020] Figure 11 The figure shows another schematic plan view of a hollowed-out area in the second direction provided by an embodiment of the present disclosure;
[0021] Figure 12 The figure shows a top view of an annular groove provided by an embodiment of the present disclosure;
[0022] Figure 13 The figure shows another top view of an annular groove provided by an embodiment of the present disclosure;
[0023] Figure 14 The figure shows a path diagram of reflected light with or without a groove provided by an embodiment of the present disclosure;
[0024] Figure 15 The figure shows a schematic diagram of a film layer structure of a display panel provided by the present disclosure;
[0025] Figure 16 The figure shows a schematic diagram of a display device provided by an embodiment of the present disclosure. Detailed implementation manners
[0026] In order to more clearly understand the above objects, features, and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.
[0027] Many specific details are set forth in the following description in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all the embodiments.
[0028] Figure 1 The figure shows a schematic diagram of a film layer structure of a display panel provided by the prior art, Figure 2 The figure shows Figure 1 a schematic diagram of the film layer structure of the array substrate in Figure 3 For Figure 2 a schematic diagram of the shape of the second electrode layer in Figures 1 to 3 , please refer to Figure 2, the array substrate 10' includes a substrate 11', and a light shielding layer 12', a passivation layer 13', an active layer 14', a gate 151', a gate insulating layer 15', a source-drain metal layer 152', an interlayer insulating layer 16', a planarization layer 17', a first electrode layer 18', an insulating layer 181', and a second electrode layer 19' located on one side of the substrate 11'. The shape of the second electrode layer 19' can refer to Figure 3 , the second electrode layer 19' includes electrode units 190', and each electrode unit 190' includes an electrode unit entity 191' and a hollow 192'. Please refer to Figure 2 . When external light enters the second electrode layer 19', due to the existence of the hollow 192' in the second electrode layer 19', the external light L1' ([[]] Figure 2 long dashed line in) entering the electrode unit entity 191' and the external light L2' ([[]] Figure 2 short dashed line in) entering the hollow 192' have different film layer structures and refractive indices corresponding to the incident positions. The exit angle of the reflected light of the external light L1' is different from the exit angle of the reflected light of the external light L2', resulting in different optical path differences of the reflected light at the electrode unit entity 191' and the hollow 192'. The coherent cancellation is not matched, thus forming rainbow patterns.
[0029] It should be noted that after the external light L1' and the external light L2' enter the array substrate 10', some of the light is refracted and some is reflected. To make the schematic diagram clear and concise, Figure 2 only the exit paths of the reflected light are shown, and the refracted light is not shown.
[0030] In addition, the gate metal layer 151' is etched to form the gate, and the source-drain metal layer 152' is etched to form the source and the drain. During the process of manufacturing, the gate, the source, and the drain form inclined cross-sections after etching. The external light L3' ([[]] Figure 2 dot-dashed line in the middle) enters the array substrate 10'. Due to various reasons such as crystal structure, electronic structure, and surface morphology, the metal has a high reflectivity. The reflected light formed by the inclined cross-section of the metal reflecting the external light L3' is scattered through the film layer ([[]] Figure 2 only the reflected light of the drain metal is shown, and it can be understood that the reflected lights of the gate and the source are similar to the reflected light of the drain). Since the reflected light of the metal inclined cross-section is strong, it will further increase the aggregation and brightness of the rainbow patterns, affecting the visual effect. Especially when the vehicle is moving, if rainbow patterns appear on the windshield, it will greatly affect safe driving.
[0031] To solve the above problems, the present disclosure provides a display panel 100, which can reduce the appearance of rainbow patterns and improve the visual effect.
[0032] Figure 4The following is a schematic structural diagram of a display panel provided by an embodiment of the present disclosure. Figure 5 is Figure 4 a schematic plan view of the array substrate in Figure 6 is Figure 5 a schematic diagram of the film layer structure along the A-A' cross-section. Figure 7 The following is a diagram showing the relative positional relationship between the hollow portion and the protruding portion. Please refer to Figures 4 to 7 , the present disclosure provides a display panel 100, including: an array substrate 10, and a color filter substrate 30 disposed opposite to the array substrate 10. A liquid crystal layer 20 is included between the array substrate 10 and the color filter substrate 30. Please refer to Figure 6 , the array substrate 10 includes a substrate 11, a passivation layer 13, a gate insulating layer 15, an interlayer insulating layer 16, a planarization layer 17, a first electrode layer 18, and a second electrode layer 19 disposed along a first direction D1. A first insulating layer 181 is included between the first electrode layer 18 and the second electrode layer 19. Optionally, a second insulating layer 182 is further included between the first electrode layer 18 and the planarization layer 17; the first direction D1 is a direction perpendicular to the plane where the substrate 11 is located. Please refer to Figure 5 , along a direction parallel to the plane where the array substrate 10 is located, the second electrode layer 19 includes a plurality of electrode units 190 arranged in an array. The electrode unit 190 includes an electrode unit entity 191 and a hollow portion 192. Please refer to Figure 6 , the interlayer insulating layer 16 includes a first sub-layer 161 and a second sub-layer 162. The first sub-layer 161 is located on the side of the gate insulating layer 15 away from the substrate 11, and the second sub-layer 162 is located on the side of the first sub-layer 161 facing the first electrode layer 18. Along a direction parallel to the plane where the substrate 11 is located, the second sub-layer 162 includes a plurality of protruding portions 163 arranged at intervals. Along the first direction D1, the protruding portion 163 and the hollow portion 192 at least partially overlap.
[0033] Specifically, the display panel 100 includes a liquid crystal layer 20. Along the first direction D1, the liquid crystal layer 20 is located between the array substrate 10 and the color filter substrate 30. The array substrate 10 is located below the liquid crystal layer 20 and is used to drive the liquid crystal layer 20 to deflect. The color filter substrate 30 covers the liquid crystal layer 20 and is used for color display of the picture.
[0034] Please refer to Figure 5 , the array substrate 10 includes a plurality of data lines 102 and a plurality of gate lines 103. The gate lines 103 and the data lines 102 intersect to define a plurality of sub-pixels 101. The sub-pixel 101 includes an electrode unit 190 and a corresponding pixel circuit. The pixel circuit is connected to the switching transistor 104 in a one-to-one correspondence. The electrode unit 190 includes an electrode unit entity 191 and a hollow 192.
[0035] Please refer to Figure 6, along the first direction D1, the array substrate 10 includes a substrate 11. Optionally, the substrate 11 includes a flexible substrate or a rigid substrate. The flexible substrate includes a polymer material substrate, such as a polyimide substrate, etc., and the rigid substrate includes an inorganic material substrate, such as a glass substrate, etc. The present disclosure does not specifically limit the substrate material, as long as it meets the stiffness and strength required by the process.
[0036] The array substrate 10 includes a gate insulating layer 15 on one side of the substrate 11. The gate insulating layer 15 generally includes an inorganic material, such as at least one of silicon oxide, silicon nitride, silicon oxynitride, etc. The gate insulating layer 15 is used to isolate the active layer and the gate in the thin film transistor; the interlayer insulating layer 16 is located on the side of the gate insulating layer 15 away from the substrate 11. The interlayer insulating layer 16 is used to isolate the gate and the source / drain in the thin film transistor. Optionally, the interlayer insulating layer 16 includes a first sub-layer 161 and a second sub-layer 162. Among them, the second sub-layer 162 is located on the side of the first sub-layer 161 away from the substrate 11. Along the second direction D2, the second sub-layer 162 includes a plurality of spaced-apart protruding portions 163. On the side of the interlayer insulating layer 16 away from the substrate 11, there are also provided a planarization layer 17, a first electrode layer 18, and a second electrode layer 19. Along the second direction D2, the second electrode layer 19 includes a plurality of electrode units 190 arranged in an array. The electrode unit 190 includes a hollowed-out portion 192. In the direction perpendicular to the plane of the substrate 11, the protruding portion 163 and the hollowed-out portion 192 at least partially overlap. That is, the protruding portion 163 in the second sub-layer 162 of the interlayer insulating layer 16 and the hollowed-out portion 192 in the electrode unit 190 of the second electrode layer 19 at least partially overlap in the projection in the first direction D1.
[0037] Since the electrode unit 190 includes a plurality of hollowed-out portions 192, the non-hollowed-out portion of the electrode unit 190 corresponds to the electrode unit entity 191. When external light is incident on the array substrate 10, due to the existence of the hollowed-out portions 192 in the second electrode layer 19 of the array substrate 10, along the first direction D1, the film stack situation of the array substrate 10 corresponding to the hollowed-out portion 192 is different from the film stack situation of the array substrate 10 corresponding to the electrode unit entity 191. It can be understood that the film thickness and the number of film layers of the array substrate 10 corresponding to the hollowed-out portion 192 are less than the film thickness and the number of film layers of the array substrate 10 corresponding to the electrode unit entity 191. When external light is incident on the array substrate 10, the reflection light angles at the hollowed-out portion 192 and at the electrode unit entity 191 are different (please refer to Figure 2 ), and the optical path differences of the reflected light at the hollowed-out portion 192 and at the electrode unit entity 191 are not matched due to coherent cancellation, resulting in the appearance of rainbow patterns.
[0038] The array substrate 10 provided by the present disclosure is configured such that a raised portion 163 is provided in the interlayer insulating layer 16 corresponding to the hollow portion 192 of the electrode unit 190, and the projection of the raised portion 163 and the hollow portion 192 in the first direction D1 at least partially overlap. That is, the film layer of the hollow portion 192 of the electrode unit 190 in the second electrode layer 19 is complemented by the raised portion 163 in the second sub-layer 162. In the first direction D1, when the film layer between the second electrode layer 19 and the gate insulating layer 15 is regarded as a whole along the first direction D1, the film layer stacking of the array substrate 10 corresponding to the hollow portion 192 is made as similar as possible to the film layer stacking corresponding to the electrode unit entity 191. When the light of an external light source is incident on the array substrate 10, the angular difference between the reflected lights of the film layers corresponding to the hollow portion 192 and the electrode unit entity 191 is reduced, and the optical path difference of the reflected lights caused by the different film layer stackings of the two parts of the hollow portion 192 and the electrode unit entity 191 is reduced, thereby improving the aggregation and brightness of the rainbow pattern and enhancing the display effect.
[0039] In this way, by providing the raised portion 163 in the second sub-layer 162 of the interlayer insulating layer 16 corresponding to the hollow portion 192, film layer complementation is formed, and the film layer stackings corresponding to the hollow portion 192 and the electrode unit entity 191 in the array substrate 10 are made as consistent as possible, thereby improving the degree of optical path difference of the reflected lights caused by the partial hollowing of the second electrode layer 19 and reducing the appearance of rainbow patterns.
[0040] It should be noted that Figure 7 only shows the number and shape of the hollow portions 192 schematically, and the present disclosure does not specifically limit the shapes and numbers of the electrode unit 190 and the hollow portions 192. Optionally, different hollow portions 192 in the electrode unit 190 may be set to different shapes and widths, including but not limited to rectangles, ellipses, polygons, etc. with different widths.
[0041] Please continue to refer to Figures 4 to 7 , the refractive index of the second sub-layer 162 is the same as that of the second electrode layer 19.
[0042] Specifically, in an optional embodiment provided by the present disclosure, the refractive index of the second electrode layer 19 is the same as that of the second sub-layer 162. As described above, the protrusion 163 in the second sub-layer 162 and the hollowed-out portion 192 of the electrode unit 190 in the second electrode layer 19 at least partially overlap in the first direction D1, so as to reduce the regional difference in the film layer stack corresponding to the hollowed-out portion 192 and the electrode unit entity 191 in the first direction D1; when external light is incident on the array substrate 10, on the basis that the film layer stack corresponding to the hollowed-out portion 192 and the electrode unit entity 191 is the same, since the refractive index of the second sub-layer 162 is the same as that of the second electrode layer 19, further, the refractive index of the protrusion 163 in the second sub-layer 162 is the same as that of the electrode unit entity 191 in the second electrode layer 19, the film layer stack corresponding to the external light incident on the hollowed-out portion 192 and the refractive index of each film layer are the same as those corresponding to the film layer stack and each film layer when the light is incident on the electrode unit entity 191, so that the refractive index of each region in the plane of the array substrate 10 is consistent, reducing the rainbow pattern caused by the different refractive indices due to the regional difference in the film layer stack. In this way, by setting the refractive indices of the second sub-layer 162 and the second electrode layer 19 in the interlayer insulating layer 16 to be the same, the film layer structure and refractive index corresponding to the hollowed-out portion 192 and the non-hollowed-out portion 192 in the plane of the array substrate 10 are made consistent, which can reduce the optical path difference between different reflected lights in different regions, reduce the occurrence of rainbow patterns, and improve the display effect of the display panel 100.
[0043] Please refer to Figures 4 to 7 , the material of the first sub-layer 161 is different from that of the second sub-layer 162, and the refractive index of the material of the second sub-layer 162 is greater than that of the material of the first sub-layer 161.
[0044] Specifically, the material of the interlayer insulating layer 16 generally includes one or more of silicon oxide, silicon nitride, and silicon oxynitride. In an optional embodiment provided by the present disclosure, the interlayer insulating layer 16 includes a first sub-layer 161 and a second sub-layer 162, and the refractive index of the material of the second sub-layer 162 is greater than that of the material of the first sub-layer 161. Optionally, the material of the first sub-layer 161 is silicon oxide, and the material of the second sub-layer 162 is silicon nitride. The refractive index of silicon oxide is approximately 1.5, and the refractive index of silicon nitride is approximately 1.9. Taking the silicon nitride material as the second sub-layer 162 of the interlayer insulating layer 16, the second electrode layer 19 is generally composed of indium tin oxide, and the refractive index of the indium tin oxide thin film is also approximately 1.9; that is, relative to the first sub-layer 161 made of silicon oxide with a small refractive index, the second sub-layer 162 made of silicon nitride with a large refractive index is closer to the second electrode layer 19. As described above, the refractive index of the second sub-layer 162 is the same as that of the second electrode layer 19, and the projection of the protrusion 163 in the second sub-layer 162 and the hollow part 192 in the electrode unit 190 overlap at least partially in the first direction D1. When external light is incident on the array substrate 10, since in the first direction D1, the number of film layer stacks and the refractive index situation corresponding to the hollow part 192 and the electrode unit entity 191 are the same, the optical path difference of the reflected light generated by the external light on the array substrate 10 is reduced, the formation of rainbow patterns can be reduced, and the visual effect can be improved. Thus, by arranging the second sub-layer 162 with a large refractive index in the interlayer insulating layer 16 on the side of the first sub-layer 161 with a small refractive index facing the second electrode layer 19, the refractive index difference between the hollow part 192 and the electrode unit entity 191 can be compensated, and the refractive index in the plane of the array substrate 10 can be kept as consistent as possible to reduce rainbow patterns and improve the display effect.
[0045] It should be noted that the above is only an example of the materials of the sub-layers in the interlayer insulating layer 16, which does not represent the selection of the film layer materials in the actual process. The present disclosure does not make specific limitations on this, and only needs to satisfy that the refractive index of the material of the second sub-layer 162 is greater than that of the material of the first sub-layer 161.
[0046] Please continue to refer to Figure 6 , along the first direction D1, the thickness H1 of the electrode unit 190 is the same as the thickness H2 of the second sub-layer 162.
[0047] Specifically, in the direction perpendicular to the plane of the substrate 11, the thickness H2 of the second sub-layer 162 is the same as the thickness H1 of the second electrode layer 19. Further, the second sub-layer 162 includes a convex portion 163, the second electrode layer 19 includes an electrode unit 190, and the thickness H1 of the electrode unit 190 in the second electrode layer 19 is the same as the thickness H2 of the convex portion 163 in the second sub-layer 162. Among them, the electrode unit 190 in the second electrode layer 19 includes a hollowed-out portion 192, and the projection of the convex portion 163 and the hollowed-out portion 192 in the first direction D1 at least partially overlaps, that is, the depth of the hollowed-out portion 192 in the first direction D1 is the same as the thickness H2 of the convex portion 163 in the first direction D1. By setting the thickness H2 of the convex portion 163 to be equal to the depth of the hollowed-out portion 192, the film layer loss caused by the hollowing 192 in the electrode unit 190 can be compensated in terms of thickness, and the light interference caused by the inconsistent film thickness between the hollowed-out portion 192 of the second electrode layer 19 and the electrode unit entity 191 can be improved, thereby enhancing the display effect.
[0048] In this way, by setting the thickness H1 of the electrode unit 190 to be the same as the thickness H2 of the second sub-layer 162 in the interlayer insulating layer 16, the film layer loss caused by the hollowing 192 of the electrode unit 190 can be compensated, the in-plane flatness and refractive index of the array substrate 10 can be made consistent, the scattering degree can be improved, and the visual effect can be enhanced.
[0049] Please continue to refer to Figure 6 , the first sub-layer 161 and the second sub-layer 162 are made of the same material.
[0050] Specifically, the material of the interlayer insulating layer 16 at least includes one or more of silicon oxide, silicon nitride, and silicon oxynitride. In an optional embodiment provided by the present disclosure, the materials of the first sub-layer 161 and the second sub-layer 162 in the interlayer insulating layer 16 are the same, that is, the refractive indices of the materials of the first sub-layer 161 and the second sub-layer 162 are the same. In this case, the first sub-layer 161 and the second sub-layer 162 can be regarded as a whole, and the interlayer insulating layer 16 can be regarded as an insulating layer made of only one material and including a convex portion 163 on the side facing the second electrode layer 19. Optionally, the materials of the first sub-layer 161 and the second sub-layer 162 can be silicon oxide at the same time, or silicon nitride at the same time, or silicon oxynitride at the same time. The present disclosure does not make specific limitations on this, and can be selected according to actual process requirements.
[0051] In this embodiment, preferably, the materials of the first sub-layer 161 and the second sub-layer 162 in the interlayer insulating layer 16 are silicon nitride. At this time, the refractive index of the material of the second sub-layer 162, that is, silicon nitride, is equal to the refractive index of the material of the second electrode layer 19, that is, indium tin oxide thin film. Further, the in-plane refractive index of the array substrate 10 can be made consistent by making the refractive indices of the convex portion 163 in the second sub-layer 162 and the electrode unit 190 in the second electrode layer 19 equal, so as to improve the light scattering degree.
[0052] In this way, when the refractive index of the second sublayer 162 is the same as that of the second electrode layer 19, the materials of the first sublayer 161 and the second sublayer 162 in the interlayer insulating layer 16 can also be set to be the same, which can equally compensate for the consistency of the refractive index within the surface of the array substrate 10, improve rainbow patterns, and enhance visual effects.
[0053] Figure 8 Shown Figure 5 Schematic diagram of the membrane structure along the B-B' section. Figure 9 FIG. 1 is a diagram showing the relative position relationship between a light shielding portion and a drain electrode provided in an embodiment of the present disclosure. Figure 10 FIG. 1 is a schematic plan view of a hollowed-out area in a second direction provided by an embodiment of the present disclosure. Figure 11 FIG. 1 is a schematic plan view of another hollowed-out area in the second direction provided by an embodiment of the present disclosure. Figure 12 FIG. 1 is a top view of an annular groove provided by an embodiment of the present disclosure. Figure 13 FIG. 1 is a top view of another annular groove provided in an embodiment of the present disclosure. Figure 14 The figure shows a path diagram of reflected light with or without grooves provided by an embodiment of the present disclosure. Please refer to Figures 8 to 14 The array substrate 10 further includes a gate metal layer 151 and a source-drain metal layer 152. The source-drain metal layer 152 is located on the side of the gate metal layer 151 away from the base substrate 11. The planarization layer 17 covers the source-drain metal layer 152. The planarization layer 17 includes a hollowed-out area 170. The hollowed-out area 170 includes a through hole 171 and a plurality of grooves 172. The grooves 172 are located on the side of the planarization layer 17 facing the first electrode layer 18. In a direction parallel to the plane where the base substrate 11 is located, the grooves 172 surround the through hole 171. The source-drain metal layer 152 includes a source electrode and a drain electrode. In the first direction D1, the through hole 171 penetrates the planarization layer 17. The through hole 171 is located in the projection of the drain electrode along the first direction D1.
[0054] Specifically, the planarization layer 17 is located on the side of the source-drain metal layer 152 facing the first electrode layer 18, the planarization layer 17 includes a hollowed-out area 170, the hollowed-out area 170 is located on the side of the planarization layer 17 facing the first electrode layer 18, the hollowed-out area 170 includes a through hole 171, the through hole 171 penetrates the planarization layer 17, and the through hole 171 is located in the projection of the drain along the first direction D1, the through hole 171 is used to connect the electrode unit 190 in the second electrode layer 19 to the drain, the hollowed-out area 170 also includes a plurality of grooves 172, please combine Figures 10 to 13 , along the second direction D2, a plurality of grooves 172 surround the through hole 171. Figure 14, the display panel 100 includes a color filter substrate 30. The color filter substrate 30 includes a light-transmitting portion 32 and a light-blocking portion 31. Along the direction parallel to the plane where the substrate 11 is located, the light-transmitting portion 32 and the light-blocking portion 31 are arranged at intervals in sequence. The light-transmitting portion 32 is used to transmit the light in the liquid crystal layer 20, and the light-blocking portion 31 is used to block the light transmitted by the adjacent light-transmitting portion 32 to prevent color crosstalk. In an optional embodiment provided by the present disclosure, a plurality of grooves 172 can be formed on the surface of the planarization layer 17 facing away from the substrate 11 by using a halftone mask. Compared with the case where the planarization layer 17 is not provided with grooves, when the planarization layer 17 is provided with grooves 171, the light reflected from the sidewall of the drain of the source-drain metal layer 152 changes the outgoing path due to the specific shape of the grooves 171, at least part of the reflected light is dispersed, and at least part of the reflected light can be blocked by the light-blocking portion 31, so that the intensity of the reflected light of the drain metal can be reduced, thereby reducing the brightness of the rainbow pattern. Thus, when the external light irradiates the source-drain metal layer 152, the outgoing path of the reflected light is changed by the specific shape of the grooves 172, and the reflected light can be dispersed, reducing the brightness and aggregation of the rainbow pattern.
[0055] It should be noted that the accompanying drawings of the present disclosure only schematically show the hollowed-out areas provided at the corresponding positions of the inclined cross-section of the drain metal. It can be understood that hollowed-out areas can also be provided at the corresponding positions of the source metal and the gate metal to disperse the reflected light and reduce the brightness and aggregation of the rainbow pattern.
[0056] Please refer to Figure 8 and Figure 9 , along the direction parallel to the plane where the substrate 11 is located, the concave shapes of the grooves 172 at both ends of the diameter of the through hole 171 are asymmetric.
[0057] Specifically, a hollowed-out area 170 is provided on the surface of the planarization layer 17 facing away from the substrate 11. The hollowed-out area 170 includes a through hole 171 and a plurality of grooves 172. In the second direction D2, the plurality of grooves 172 surround the through hole 171, and the concave shapes of the grooves 172 at both ends of any diameter of the through hole 171 are asymmetric. When the external light is incident on the grooves 172, due to the asymmetric concave shapes of the grooves 172 at both ends of the diameter of the through hole 171, the regular reflection of light caused by the symmetric concave shape of the grooves 172 can be reduced, thereby reducing the brightness of the rainbow pattern. Thus, by setting the concave shapes of the grooves 172 at both ends of the diameter of the through hole 171 to be asymmetric, the regular reflection of light caused by the symmetric concave shape of the grooves 172 can be reduced, the reflected stray light can be reduced, and the rainbow pattern can be reduced.
[0058] The hollowed-out area 170 includes a through hole 171 and grooves 172. Along the second direction D2, the grooves 172 surround the through hole 171. The present disclosure does not limit whether there are multiple or single grooves 172 arranged on both sides of the through hole 171 along the diameter direction.
[0059] Please refer toFigure 10 , in an alternative embodiment provided by the present disclosure, within the hollowed-out area 170, only one circle of grooves 172 surrounds the through-hole 171. Both sides of the through-hole 171 along the diameter D include a first groove 173 and a second groove 174. Among them, the diameter of the first groove 173 is d1, and the diameter of the second groove 174 is d2, where d1≠d2, and the concave shape of the first groove 173 is asymmetrical with the concave shape of the second groove 174. The projection of the hollowed-out area 170 in the first direction D1 covers the drain electrode. On the basis that the concave shapes of the grooves 172 on both sides of the diameter of the through-hole 171 are inconsistent, the diameters d1 of the first groove 173 and d2 of the second groove 174 are designed differently. The light reflected by the drain electrode after the external light enters the drain electrode is changed in the outgoing path by the different concave shapes and different diameter sizes of the grooves 172, so as to disperse the light reflected from the side wall of the drain electrode metal, reduce regular reflection, and thus reduce the brightness aggregation of rainbow patterns.
[0060] Please refer to Figure 11 , in another alternative embodiment provided by the present disclosure, within the hollowed-out area 170, more than one circle of grooves 172 surrounds the through-hole 171. Both sides of the through-hole 171 along the diameter direction respectively include a plurality of grooves 172, and the diameters of at least two grooves 172 are not equal. It can be understood that the diameters of at least two adjacent grooves 172 are not equal, or the diameters of at least two non-adjacent grooves 172 are not equal. The concave shapes of the grooves 172 at both ends of the diameter of the through-hole 171 are asymmetrical. The projection of the hollowed-out area 170 in the first direction D1 covers the drain electrode. At this time, the light reflected by the side wall of the drain electrode metal after the external light enters the drain electrode is further changed in the outgoing path by the different concave shapes and different diameter sizes of the plurality of grooves 172. Compared with the case where only one groove 172 exists on each side of the diameter of the through-hole 171, when a plurality of grooves 172 exist on each side of the diameter of the through-hole 171, the light reflected from the side wall of the drain electrode metal can be better dispersed, which can further improve the aggregation of rainbow patterns caused by the light reflected by the drain electrode metal, reduce the brightness of rainbow patterns, and improve the visual effect. It should be noted that Figure 10 and Figure 11 only show the cases where the through-hole 171 is surrounded by one circle of grooves 172 or two circles of grooves 172. Optionally, the through-hole 171 can also be surrounded by 3 circles, 4 circles... or more grooves 172. The present disclosure does not specifically limit the number and arrangement of the grooves, which can be set according to actual needs.
[0061] Figure 12 The following shows a top view of an annular groove provided by an embodiment of the present disclosure. Please refer to Figure 12 , in an alternative embodiment provided by the present disclosure, within the hollowed-out area 170, one circle of grooves 172 surrounds the through-hole 171. At this time, the groove 172 is annular. Please combine Figure 9, the concave shapes of the two parts of the groove 172 along both sides of the diameter of the through hole 171 are inconsistent, so that the light reflected from the side wall of the drain metal can be dispersed, the brightness of the rainbow pattern can be reduced, and the visual effect can be improved.
[0062] Figure 13 The following is a top view of another annular groove provided by the embodiment of the present disclosure. Please refer to Figure 8 , Figure 9 and Figure 13 , in an optional embodiment provided by the present disclosure, within the hollowed-out area 170, there are more than one circle of grooves 172 surrounding the through hole 171. Specifically, a first groove 173 is surrounded around the through hole 171, and a second groove 174 is also surrounded around the through hole 171. The first groove 173 is located between the through hole 171 and the second groove 174. The concave shapes of the two sides of the first groove 173 along the diameter direction of the through hole 171 are inconsistent, and the concave shapes of the two sides of the second groove 174 along the diameter direction of the through hole 171 are inconsistent. Further, on any one side of the first groove 173 along the diameter direction of the through hole 171, the concave shape is inconsistent with that of the second groove 174 on the same side. The diameter d1 of the first groove 173 and the diameter d2 of the second groove 174 may be the same or different, and the present disclosure does not limit this. Figure 13 Only the case where the diameter d1 of the first groove 173 is different from the diameter d2 of the second groove 174 is schematically shown. Preferably, the diameter d1 of the first groove 173 is larger than the diameter d2 of the second groove 174, so that the central part of the light reflected from the metal side wall that causes the brightness of the rainbow pattern to increase can be dispersed as much as possible, reducing the light aggregation, reducing the brightness of the rainbow pattern, and improving the visual effect.
[0063] It should be noted that Figure 12 and Figure 13 Only the cases where the through hole 171 is surrounded by one circle of grooves 172 or two circles of grooves 172 are schematically shown. Optionally, the through hole 171 can also be surrounded by 3 circles, 4 circles... or more grooves 172. The present disclosure does not specifically limit the number and arrangement of the grooves, and can be set according to actual needs.
[0064] Please continue to refer to Figure 9 , the groove 172 includes a first groove 173 and a second groove 174. Along the first direction D1, the depth of the first groove 173 is h1, the depth of the second groove 174 is h2, and the depth of the through hole 171 is h3. Among them, h1 + h2 < h3, and h1 ≠ h2.
[0065] Specifically, the hollowed-out area 170 includes a through-hole 171 and a groove 172. The groove 172 surrounds the through-hole 171. The groove 172 includes a first groove 173 and a second groove 174. Along the direction perpendicular to the plane where the substrate 11 is located, the depths of the first groove 173, the second groove 174, and the through-hole 171 are different, and the sum of the depth h1 of the first groove 173 and the depth h2 of the second groove 174 is less than the depth h3 of the through-hole 171. Optionally, the first groove 173 and the second groove 174 may be grooves 172 located at both ends of the through-hole 171 along the diameter direction, or two adjacent grooves 172 located at one end of the through-hole 171 in the diameter direction, or the first groove 173 and the second groove 174 are not adjacent and not on the same side... Without listing them one by one here, the present disclosure does not specifically limit the positions of the first groove 173 and the second groove 174. It can be understood that the depths of any two grooves 172 in the hollowed-out area 170 are different in the first direction D1, and the sum of the depths of any two grooves 172 in the first direction D1 is less than the depth of the through-hole 171 in the first direction D1. Further, the depth of any groove 172 in the first direction D1 is less than the depth of the through-hole 171 in the first direction D1, so as to prevent the groove 172 from penetrating through the through-hole 171, ensure that the groove 172 is only located on the surface of the planarization layer 17 facing away from the substrate 11, and change the outgoing path of the light reflected by the metal sidewall through the different shapes and depths of the grooves 172, so as to reduce the rainbow pattern brightness and reduce its aggregation.
[0066] Please continue to refer to Figure 8 and Figure 9 , the projection of the hollowed-out area 170 along the first direction D1 covers the drain.
[0067] Specifically, the hollowed-out area 170 is located on the surface of the planarization layer 17 facing the first electrode layer 18. The projection of the hollowed-out area 170 in the direction perpendicular to the plane where the substrate 11 is located covers the drain. The hollowed-out area 170 includes a through-hole 171 and a groove 172 surrounding the through-hole 171 along the second direction D2. When the projections of the through-hole 171 and the groove 172 in the first direction D1 cover the drain, the hollowed-out area 170 can accommodate as much external light incident on the drain metal as possible. Combining with the special shape of the groove 172, the propagation path of the external light reflected by the sidewall of the drain metal is changed as much as possible, and the brightness of the rainbow pattern in the visual sense is reduced. In this way, by setting the projection of the hollowed-out area 170 in the first direction D1 to cover the drain, the hollowed-out area 170 can accommodate as much light incident on the drain as possible, so as to scatter the light reflected by the sidewall of the drain as much as possible, reduce the light concentration, and reduce the aggregation and brightness of the rainbow pattern.
[0068] Please refer to Figure 9, the color filter substrate 30 includes a light-transmitting portion 32 and a light-shielding portion 31. Along the direction parallel to the plane where the substrate 11 is located, the light-transmitting portion 32 and the light-shielding portion 31 are arranged at intervals in turn, and the projection of the light-shielding portion 31 along the first direction D1 is located within the hollow area 170.
[0069] Specifically, the display panel 100 includes an array substrate 10, a liquid crystal layer 20, and a color filter substrate 30. Along the first direction D1, the liquid crystal layer 20 is located between the array substrate 10 and the color filter substrate 30. The array substrate 10 is used to drive the liquid crystal to deflect, and the color filter substrate 30 is used to change the light-emitting color of the liquid crystal. The color filter substrate 30 includes a light-transmitting portion 32 and a light-shielding portion 31 that are arranged at intervals in turn along the second direction D2. The projection of the light-shielding portion 31 in the direction perpendicular to the plane where the substrate 11 is located is located within the hollow area 170. That is, the area of the light-shielding portion 31 along the second direction D2 is smaller than the area of the corresponding hollow area 170 along the second direction D2, so as to prevent the area of the light-shielding portion 31 from being too large, resulting in too little light emitted from the liquid crystal layer 20, and then causing a dark state of the display panel 100. In addition, the projection of the light-shielding portion 31 along the first direction D1 is located within the hollow area 170. The hollow area 170 can change the outgoing path of the light reflected from the drain metal in combination with the grooves 172 with inconsistent depression shapes and depths on the basis of ensuring the normal display of the display panel 100, and reduce the aggregation of rainbow patterns caused by the reflection of external light by the metal film layer.
[0070] In this way, the light-shielding portion 31 is arranged so that its projection along the first direction D1 is located within the hollow area 170, so as to prevent the area of the light-shielding portion 31 from being too large and affecting the light emission of the display panel 100. While ensuring normal display, the outgoing path of the light reflected by the drain metal is changed, and the appearance or aggregation of rainbow patterns is reduced.
[0071] Please continue to refer to Figure 8 and Figure 9 , along the first direction D1, among the light-shielding portion 31 and the drain corresponding to the same hollow area 170, the distance d3 between the edge of the projection contour of the drain along the first direction D1 and the edge of the projection contour of the light-shielding portion 31 on the same side is less than 0.5 μm.
[0072] Specifically, the projection of the light-shielding portion 31 in the first direction D1 is located within the hollowed-out area 170, that is, the edge contour of the light-shielding portion 31 is smaller than the edge contour of the hollowed-out area 170. The inventor found through experimental research that when the actually measured distance d3 between the edge of the projection contour of the drain and the edge of the projection contour of the light-shielding portion 31 on the same side is 0 μm, that is, the viewing angle in the direction perpendicular to the plane where the display panel 100 is located, the drain cannot be observed. At this time, rainbow patterns can be observed, but the brightness is not high; when the actually measured distance d3 between the edge of the projection contour of the drain and the edge of the projection contour of the light-shielding portion 31 on the same side is 0.68 μm, at the viewing angle in the direction perpendicular to the plane where the display panel 100 is located, the drain can be observed, but the rainbow patterns are more obvious than when d3 is 0 μm, and the brightness is brighter; when the actually measured distance d3 between the edge of the projection contour of the drain and the edge of the projection contour of the light-shielding portion 31 on the same side is 1.83 μm, the observed rainbow patterns are more obvious than when d3 is 0.68 μm, and the brightness is brighter; when the actually measured distance d3 between the edge of the projection contour of the drain and the edge of the projection contour of the light-shielding portion 31 on the same side is 4 μm, the observed rainbow patterns are wider, more obvious, and brighter than when d3 is 1.83 μm; in order to reduce rainbow patterns, reduce the brightness aggregation of rainbow patterns, and provide a certain alignment margin for process production, in an optional embodiment provided by the present disclosure, the distance d3 between the edge of the projection contour of the drain and the edge of the projection contour of the light-shielding portion 31 on the same side is less than 0.5 μm. Optionally, the distance d3 between the edge of the projection contour of the drain and the edge of the projection contour of the light-shielding portion 31 on the same side is 0.4 μm, or the distance d3 between the edge of the projection contour of the drain and the edge of the projection contour of the light-shielding portion 31 on the same side is 0.3 μm, or the distance d3 between the edge of the projection contour of the drain and the edge of the projection contour of the light-shielding portion 31 on the same side is 0.2 μm... which are not listed one by one here. As long as the distance d3 between the edge of the projection contour of the drain and the edge of the projection contour of the light-shielding portion 31 on the same side is within the range less than 0.5 μm.
[0073] It can be understood that the projection of the hollowed-out area 170 in the first direction D1 covers the drain. The color filter substrate 30 includes a light-shielding portion 31 and a light-transmitting portion 32. The light-shielding portion 31 is usually not directly above the drain and is slightly offset. The inventor found through a large number of studies that the farther the edge contour of the drain is from the edge contour of the corresponding light-shielding portion 31, that is, the larger the overlapping area between the projection of the drain in the first direction D1 and the light-transmitting portion 32, the more serious the rainbow patterns. When the distance between the edge of the projection contour of the drain along the first direction D1 and the edge of the projection contour of the light-shielding portion 31 on the same side is set within the range less than 0.5 μm, by reducing the exposed range of the drain metal relative to the light-shielding portion 31, the reflected light of the drain metal can be effectively refracted through the groove 172 so as to be blocked by the corresponding light-shielding portion 31, thereby effectively reducing the brightness aggregation of rainbow patterns.
[0074] Figure 15 The following is a schematic diagram of the film layer structure of a display panel provided by the present disclosure. Please refer to Figures 4 to 15 , the second electrode layer 19 can be a pixel electrode or a common electrode.
[0075] Specifically, Figure 5 and Figure 7 only the case where the second electrode layer 19 is a pixel electrode is schematically shown. It can be understood that the second electrode layer 19 can also be a common electrode. When the second electrode layer 19 is a pixel electrode, the first electrode layer 18 is a common electrode at this time. Or, please refer to Figure 15 , the second electrode layer 19 is a common electrode, and the first electrode layer 18 is a pixel electrode at this time. The above embodiments are also applicable to this structure and will not be elaborated here. The present disclosure does not specifically limit the second electrode layer 19, and the actual electrode of the second electrode layer 19 can be determined according to actual process requirements.
[0076] Figure 16 The following is a schematic diagram of a display device provided by an embodiment of the present disclosure. Please refer to Figure 16 , the present disclosure provides a display device 200, which includes the display panel 100 as described above.
[0077] The display device 200 provided by the embodiments of the present disclosure can be any electronic device with a display function, such as a touch display screen, a mobile phone, a tablet computer, a notebook computer, an e-reader, or a television, etc. The display device 200 provided by the embodiments of the present disclosure has the beneficial effects of the display panel provided by the embodiments of the present disclosure. Specifically, reference can be made to the specific descriptions of the display panel in the above embodiments, and this embodiment will not be elaborated here.
[0078] It can be understood that Figure 16 only the shape of the display device 200 is schematically shown by taking a rounded rectangle structure as an example. In some other embodiments of the present disclosure, the display device 200 can also be embodied as a circular shape, an oval shape, or any other feasible shape. The present disclosure does not specifically limit this.
[0079] In summary, for a display panel and a display device provided by the present disclosure, by providing a protruding portion in a second sub-layer corresponding to a hollow portion to form film layer complementarity, the film layer stacking situation corresponding to the hollow portion and the electrode unit entity in the first direction is made as consistent as possible, reducing the aggregation of rainbow patterns caused by regional film layer differences. By setting the refractive index of the second sub-layer and the second electrode layer to be the same, the refractive index of the film layer structure corresponding to the hollow portion and the electrode unit entity is made consistent, which can reduce light interference and scattering and reduce rainbow patterns. By arranging the second sub-layer with a large refractive index on the side of the first sub-layer with a small refractive index facing the second electrode layer, the refractive index difference between the refractive index of the hollow portion and the film layer structure corresponding to the electrode unit entity can be compensated, and the refractive index in the plane of the array substrate is kept as consistent as possible. By setting the thickness of the electrode unit to be the same as the thickness of the second sub-layer, the film layer loss caused by the hollowing of the electrode unit can be compensated, the flatness and refractive index in the plane of the array substrate are compensated to be consistent, the scattering degree is improved, and the visual effect is enhanced. When the refractive index of the second sub-layer and the second electrode layer is the same, by setting the materials of the first sub-layer and the second sub-layer to be the same, the consistency of the refractive index in the plane of the array substrate can be compensated equally, the scattering is improved, and the visual effect is enhanced. By changing the outgoing path of the reflected light through the specific shape of the groove, the reflected stray light and astigmatism can be improved, and the metal light leakage caused by the reflection of the external light source by the metal side wall in the device area of the array substrate and the scattering through the film layer can be improved. By setting the groove depression shapes at both ends of the through hole diameter to be asymmetric, the regular reflection of light caused by the symmetry of the groove depression shape can be reduced, and the light interference can be reduced. By setting the hollowed-out area to cover the drain in the projection in the first direction, the hollowed-out area can accommodate the light incident on the drain as much as possible, so that the light reflected from the side wall of the drain can be scattered as much as possible, reducing the light concentration and reducing the formation and brightness of rainbow patterns. The light-shielding portion is arranged such that its projection in the first direction is located within the hollowed-out area, so as to prevent the area of the light-shielding portion from being too large and affecting the light output of the display panel. While ensuring normal display, the outgoing path of the light reflected by the drain metal is changed through the groove. When the distance between the projection contour edge of the drain along the first direction and the projection contour edge of the light-shielding portion on the same side is set within a range less than 0.5 μm, the exposed range of the drain metal relative to the light-shielding portion can be reduced, effectively reducing the light reflected by the drain metal from the light-transmitting portion adjacent to the light-shielding portion, thereby effectively reducing the generation of rainbow patterns.
[0080] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A display panel, characterized in that: Comprising: An array substrate, and a color filter substrate disposed opposite to the array substrate, with a liquid crystal layer included between the array substrate and the color filter substrate; The array substrate includes a substrate, a gate insulating layer, an interlayer insulating layer, a planarization layer, a first electrode layer, and a second electrode layer disposed along a first direction; the first direction is perpendicular to the plane where the substrate is located; Along a direction parallel to the plane where the substrate is located, the second electrode layer includes a plurality of electrode units arranged in an array, and the electrode unit includes a hollow portion; The interlayer insulating layer includes a first sub-layer and a second sub-layer, the first sub-layer is located on the side of the gate insulating layer away from the substrate, and the second sub-layer is located on the side of the first sub-layer facing the first electrode layer; Along a direction parallel to the plane where the substrate is located, the second sub-layer includes a plurality of protruding portions arranged at intervals, and along the first direction, the protruding portion at least partially overlaps with the hollow portion.
2. The display panel according to claim 1, wherein: The second sub-layer has the same refractive index as the second electrode layer.
3. The display panel according to claim 2, wherein: The first sub-layer and the second sub-layer are made of different materials, and the refractive index of the second sub-layer material is greater than that of the first sub-layer material.
4. The display panel according to claim 2, wherein: Along the first direction, the thickness of the electrode unit is the same as the thickness of the second sub-layer.
5. The display panel according to claim 2, wherein: The first sub-layer and the second sub-layer are made of the same material.
6. The display panel according to claim 1, wherein: The array substrate further includes a source-drain metal layer, the source-drain metal layer is located on the side of the interlayer insulating layer facing the first electrode layer, and the planarization layer covers the source-drain metal layer; The planarization layer includes a hollowed-out area, the hollowed-out area includes a through hole and a plurality of grooves, the grooves are located on the side of the planarization layer facing the first electrode layer, and along a direction parallel to the plane where the substrate is located, the grooves surround the through hole; The source-drain metal layer includes a source electrode and a drain electrode, along the first direction, the through hole penetrates the planarization layer, and the through hole is located within the projection of the drain electrode along the first direction.
7. The display panel according to claim 6, wherein: Along a direction parallel to the plane where the substrate is located, the concave shapes at both ends of the diameter of the through hole in the grooves are asymmetric.
8. The display panel according to claim 6, wherein: The grooves include a first groove and a second groove, along the first direction, the depth of the first groove is h1, the depth of the second groove is h2, and the depth of the through hole is h3, where h1 + h2 < h3 and h1 ≠ h2.
9. The display panel according to claim 6, wherein: The projection of the hollowed-out area along the first direction covers the drain electrode.
10. The display panel according to claim 6, wherein: The color filter substrate includes a light-transmitting portion and a light-blocking portion, along a direction parallel to the plane where the substrate is located, the light-transmitting portion and the light-blocking portion are arranged at intervals in sequence, and the projection of the light-blocking portion along the first direction is located within the hollowed-out area.
11. The display panel according to claim 10, wherein: Along the first direction, among the light-blocking portion and the drain electrode corresponding to the same hollowed-out area, the distance from the edge of the projection contour of the drain electrode along the first direction to the edge of the projection contour of the light-blocking portion on the same side is less than 0.5 μm.
12. The display panel according to claim 1, wherein: The second electrode layer can be a pixel electrode or a common electrode.
13. A display device, characterized in that: Including the display panel according to any one of claims 1-12.