Array substrate, display panel and display device

Abstract

The utility model provides an array substrate, a display panel and a display device, the array substrate is provided with a display area and a non-display area, and the array substrate comprises a crack blocking structure located in the non-display area; the orthographic projection of the electrostatic discharge wire on the plane where the array substrate is located is at least partially overlapped with the orthographic projection of the crack blocking structure on the plane where the array substrate is located; the orthographic projection of the crack detection line on the plane where the array substrate is located is at least partially overlapped with the orthographic projection of the crack blocking structure on the plane where the array substrate is located. According to the array substrate provided by the utility model, the projection of the crack detection line and the projection of the electrostatic discharge routing line are overlapped with the projection of the crack blocking structure, so that the space overlapping among the structures in the traditional discrete design is avoided, the space occupation in the non-display area is reduced, the narrow frame design is utilized, and the screen-to-body ratio of the display equipment can be further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display technical field especially relates to an array substrate, display panel and display device. BACKGROUND

[0002] Organic light emitting diode (OLED) and flat display device based on light emitting diode (LED) technology have the advantages of high definition, power saving, thin body and wide application range, and are widely used in mobile phones, televisions, notebook computers, desktop computers and other consumer electronic products, and become the mainstream of display devices.

[0003] However, the performance of the related display device needs to be improved. INVENTION CONTENTS

[0004] Therefore, the utility model discloses an array substrate, display panel and display device, which are beneficial to realize narrow frame.

[0005] To achieve the above object, the utility model provides an array substrate, the array substrate has display area and non - display area, the array substrate includes:

[0006] Crack blocking structure, be located in the non - display area;

[0007] Static electricity release wire, the static electricity release wire in the array substrate lies on the plane on - projection with crack blocking structure in the array substrate lies on the plane on - projection at least partial intersection;

[0008] Crack detection line, the crack detection line in the array substrate lies on the plane on - projection with crack blocking structure in the array substrate lies on the plane on - projection at least partial intersection.

[0009] In one embodiment, the array substrate includes:

[0010] Substrate, the crack blocking structure is arranged on one side of the substrate;

[0011] Preferably, the static electricity release wire is at least partially located inside the crack blocking structure;

[0012] Preferably, the crack detection line is at least partially located inside the crack blocking structure.

[0013] Further preferably, the static electricity release wire on - projection on the substrate is located in the crack blocking structure on - projection on the substrate;

[0014] Further preferably, a projection of the crack detection line on the substrate is located within a projection of the crack blocking structure on the substrate.

[0015] In one embodiment, the crack detection line is disposed on a side of the electrostatic discharge wire facing away from the substrate.

[0016] Preferably, a projection of the electrostatic discharge wire on the substrate at least partially overlaps a projection of the crack detection line on the substrate.

[0017] In one embodiment, the array substrate comprises:

[0018] an inorganic layer disposed on a side of the substrate; the crack blocking structure comprises a blocking groove, the blocking groove at least penetrating the inorganic layer;

[0019] Preferably, the electrostatic discharge wire is located on a side of the inorganic layer facing away from the substrate.

[0020] Preferably, a projection of the electrostatic discharge wire on the substrate at least partially overlaps a projection of the inorganic layer on the substrate.

[0021] Preferably, a projection of the electrostatic discharge wire on the substrate does not overlap a projection of the blocking groove on the substrate.

[0022] In one embodiment, the crack blocking structure comprises a protective layer, the protective layer comprises a covering portion and a filling portion, the covering portion is located on a side of the inorganic layer facing away from the substrate, and the filling portion fills the blocking groove.

[0023] Preferably, the protective layer comprises an organic layer.

[0024] In one embodiment, the electrostatic discharge wire comprises a first electrostatic ring and a second electrostatic ring, the first electrostatic ring at least partially surrounds the display area, and the second electrostatic ring is disposed on a side of the first electrostatic ring facing away from the display area.

[0025] Preferably, the first electrostatic ring and the second electrostatic ring are located inside the crack blocking structure.

[0026] In one embodiment, the array substrate comprises:

[0027] a power signal line at least partially located in the non-display area; the crack blocking structure is disposed on a side of the power signal line facing away from the display area.

[0028] Preferably, the non-display area comprises a frame area, and the frame area surrounds the display area.

[0029] In one embodiment, the array substrate comprises a first metal layer, a second metal layer and a third metal layer in sequence away from the substrate, the electrostatic discharge wire is at least partially located in the first metal layer and / or the second metal layer, and the crack detection line is at least partially located in the third metal layer.

[0030] Preferably, the material of the electrostatic discharge wire comprises molybdenum.

[0031] Preferably, the crack detection line comprises a first titanium layer, an aluminum layer and a second titanium layer in sequence away from the substrate.

[0032] The utility model discloses a second aspect provides a kind of display panel, which comprises the array substrate in the first aspect above.

[0033] The utility model discloses a third aspect provides a kind of display device, which comprises the display panel in the second aspect above.

[0034] The array substrate provided by the utility model makes the crack detection line and the electrostatic discharge wire overlap with the projection of crack blocking structure, avoids the space superposition between each structure in traditional discrete design, reduces the space occupation in non-display area, has narrow frame design, and further can improve the screen ratio of display equipment. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme in the utility model or related technology, the following will briefly introduce the drawings needed to be used in embodiment or related technology description, and obviously, the drawings in the following description are only the embodiment of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0036] Figure 1 It is a kind of related array substrate plane structure schematic diagram;

[0037] Figure 2 It is the cross-sectional view along Figure 1 A-A direction in it;

[0038] Figure 3 It is the plane structure schematic diagram of array substrate provided by an embodiment of the utility model;

[0039] Figure 4 It is the cross-sectional view along Figure 3 B-B direction in it;

[0040] Figure 5 It is the cross-sectional schematic diagram of array substrate provided by another embodiment of the utility model;

[0041] Figure 6The utility model provides an array substrate protection layer structure schematic diagram.

[0042] Marking:

[0043] 100, array substrate;101, display area;102, non-display area;

[0044] 1, substrate;2, crack barrier structure;20, protection layer;201, cover part;202, filling part;21, inorganic layer;210, barrier groove;3, electrostatic discharge trace;31, first electrostatic ring;32, second electrostatic ring;4, crack detection line. Specific embodiments

[0045] In order to make the purpose, technical scheme and advantage of the utility model clearer and more apparent, the following is combined with specific embodiments, and the utility model is further explained in detail with reference to the drawings.

[0046] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the utility model should be understood as the usual meaning understood by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the embodiments of the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] With the popularity of AMOLED (Active-Matrix Organic Light-Emitting Diode, Active Matrix Organic Light Emitting Diode) display technology, the market demand for screen ratio and narrow frame of display equipment is increasing.

[0048] As Figure 1 , Figure 2As shown, in traditional display panel designs, the non-display area 102 typically includes a crack detection line 4 for detecting cracks, an electrostatic discharge line 3 for isolating static electricity, and a crack blocking structure 2 for preventing cracks from extending to the display area 101. The crack detection line 4, electrostatic discharge line 3, and crack blocking structure 2 are arranged sequentially along the direction from the display area 101 to the non-display area 102. However, the inventors discovered that because the crack detection line (PCD), electrostatic discharge line, and crack blocking structure (Crack Dam) are designed separately, each occupying a certain width, a large amount of space in the non-display area 102 is occupied. This makes it difficult to further narrow the bezel, failing to meet the current market demand for narrow bezel displays and limiting improvements in the appearance and screen-to-body ratio of display devices.

[0049] Based on this, the present invention provides an array substrate solution to solve the above problems, as detailed in the following embodiments.

[0050] like Figure 3 , Figure 4 As shown, an embodiment of this utility model provides an array substrate 100, which has a display area 101 and a non-display area 102. The array substrate 100 includes a crack blocking structure 2, an electrostatic discharge trace 3, and a crack detection line 4. The orthographic projection of the electrostatic discharge trace 3 onto the plane of the array substrate 100 at least partially overlaps with the orthographic projection of the crack blocking structure 2 onto the plane of the array substrate 100, and the orthographic projection of the crack detection line 4 onto the plane of the array substrate 100 at least partially overlaps with the orthographic projection of the crack blocking structure 2 onto the plane of the array substrate 100.

[0051] The crack blocking structure 2 is located in the non-display area 102. Optionally, the electrostatic discharge trace 3 is at least partially located inside the crack blocking structure 2, and the crack detection line 4 is at least partially located inside the crack blocking structure 2. "At least partially located inside the crack blocking structure 2" means that a portion or all of the structure of the electrostatic discharge trace 3 is located inside the crack blocking structure 2. "At least partially located inside the crack blocking structure 2" means that a portion or all of the structure of the crack detection line 4 is located inside the crack blocking structure 2.

[0052] Specifically, the crack blocking structure 2 can be used to disperse the stress generated during the cutting of the array substrate 100, and / or to block the path of the cracks generated during the cutting of the array substrate 100 extending to the display area 101. The electrostatic discharge trace 3 is used to release static electricity, prevent electrostatic breakdown, protect the circuits inside the array substrate 100 from electrostatic damage, and reduce product failures caused by static electricity.

[0053] In an embodiment thereof, for the best example purpose, it is shown that the electrostatic discharge wire and the crack detection line are both arranged in the crack blocking structure, obviously, the scheme that the normal projection of the electrostatic discharge wire or the crack detection line on the plane where the array substrate 100 is located at least partially overlaps with the normal projection of the crack blocking structure on the plane where the array substrate 100 is located is also implemented and similar technical effects are achieved, and the specific embodiments will not be described in detail.

[0054] The array substrate 100 provided by the embodiment of the utility model, through crack detection line 4, electrostatic discharge wire 3 set in crack blocking structure 2 inside, avoid the space superposition between each structure in traditional separate design, reduce the space occupation of non display area 102, have with narrow frame design, further can improve the screen ratio of display equipment.

[0055] As shown in the figure, Figure 5 In an embodiment, the array substrate 100 includes a substrate 1, and the crack blocking structure 2 is arranged on one side of the substrate 1.

[0056] Optionally, the normal projection of the electrostatic discharge wire 3 on the substrate 1 is located in the normal projection of the crack blocking structure 2 on the substrate 1.

[0057] Optionally, the normal projection of the crack detection line 4 on the substrate 1 is located in the normal projection of the crack blocking structure 2 on the substrate 1.

[0058] Optionally, the normal projection of the electrostatic discharge wire 3 on the substrate 1 at least partially overlaps with the normal projection of the crack detection line 4 on the substrate 1.

[0059] Further, in an embodiment, the electrostatic discharge wire 3 is arranged on the side of the crack detection line 4 close to the substrate 1.

[0060] Optionally, the normal projection of the electrostatic discharge wire 3 on the substrate 1 at least partially overlaps with the normal projection of the crack detection line 4 on the substrate 1.

[0061] Optionally, the electrostatic discharge wire 3 and the crack detection line 4 are arranged in layers and can be located in different film layers, so as to avoid the conflict of the structures in space, and the normal projection range of the electrostatic discharge wire 3 and the crack detection line 4 on the substrate 1 at least partially overlaps, which reasonably arranges the two kinds of lines in limited space and improves the space utilization.

[0062] As shown in the figure, Figure 5As shown, in one embodiment, the array substrate 100 includes an inorganic layer 21 disposed on one side of the substrate 1. The crack barrier structure 2 includes a barrier groove 210 which at least penetrates the inorganic layer 21.

[0063] Specifically, the crack barrier structure 2 includes a plurality of barrier grooves 210 which are arranged at intervals. In the manufacturing process, the inorganic layer 21 can be etched to form the plurality of barrier grooves 210, so that the groove depth of the barrier groove 210 penetrates the inorganic layer 21. It should be noted that the barrier groove 210 can also penetrate the inorganic layer 21 and extend to the inside of the substrate 1, thereby enhancing the crack barrier effect.

[0064] Optionally, the electrostatic discharge trace 3 is located on the side of the inorganic layer 21 away from the substrate 1.

[0065] Optionally, the orthogonal projection of the electrostatic discharge trace 3 on the substrate 1 does not overlap with the orthogonal projection of the barrier groove 210 on the substrate 1.

[0066] In this way, by arranging the inorganic layer 21 and the barrier groove 210 which penetrates the inorganic layer 21, the crack barrier structure 2 formed thereby can effectively disperse the cutting stress and block the crack propagation path. The electrostatic discharge trace 3 is located on the side of the inorganic layer 21 away from the substrate 1, and the orthogonal projection of the electrostatic discharge trace 3 does not overlap with the orthogonal projection of the barrier groove 210, which not only ensures the electrostatic discharge function, but also avoids weakening the function of the crack barrier structure 2, thereby improving the reliability of the array substrate 100.

[0067] Further, as shown in one embodiment, the crack barrier structure 2 includes a protective layer 20 which includes a covering portion 201 and a filling portion 202. The covering portion 201 is located on the side of the inorganic layer 21 away from the substrate 1, and the filling portion 202 fills the barrier groove 210. Figure 6

[0068] Optionally, the protective layer 20 includes an organic layer, and specifically, optical glue can be used.

[0069] In this way, by designing the covering portion 201 and the filling portion 202 of the protective layer 20, the filling portion 202 fills the barrier groove 210, and the covering portion 201 is arranged on the side of the inorganic layer 21 away from the substrate 1, thereby protecting the internal structure and preventing the influence of external environmental factors. By forming the crack barrier structure 2 through the protective layer 20, the crack can be reduced or prevented from extending to the display area 101, and water vapor or oxygen can also be prevented from invading the display area 101, which is helpful to improve the stability and service life of the array substrate 100.

[0070] As shown in one embodiment, the crack barrier structure 2 includes a protective layer 20 which includes a covering portion 201 and a filling portion 202. The covering portion 201 is located on the side of the inorganic layer 21 away from the substrate 1, and the filling portion 202 fills the barrier groove 210. Figure 5 ​As shown, in one embodiment, the electrostatic discharge trace 3 includes a first electrostatic ring 31 and a second electrostatic ring 32, the first electrostatic ring 31 at least partially surrounds the display area 101, and the second electrostatic ring 32 is disposed on a side of the first electrostatic ring 31 away from the display area 101. The first electrostatic ring 31 and the second electrostatic ring 32 are located inside the crack blocking structure 2.

[0071] In this way, the electrostatic discharge trace 3 adopts a double electrostatic ring structure and is disposed inside the crack blocking structure 2, thereby enhancing the electrostatic protection capability.

[0072] In one embodiment, the array substrate 100 includes a power signal line, and the power signal line is at least partially located in the non-display area 102. The crack blocking structure 2 is disposed on a side of the power signal line away from the display area 101.

[0073] Specifically, the non-display area 102 includes a frame area, and the frame area surrounds the display area 101. The power signal line is specifically an ELVSS (negative power supply) trace, and the crack blocking structure 2 and the power signal line are located in the frame area. The crack blocking structure 2 can be disposed on the outside of the ELVSS trace. This layout can ensure the transmission of the power signal and also protect the power signal line to a certain extent by using the crack blocking structure 2.

[0074] In one embodiment, the array substrate 100 includes a first metal layer, a second metal layer, and a third metal layer in sequence away from the substrate 1, and the electrostatic discharge trace 3 is at least partially located in the first metal layer and / or the second metal layer, and the crack detection line 4 is at least partially located in the third metal layer.

[0075] For example, the array substrate 100 includes a pixel circuit layer stacked on the substrate 1. The display area 101 is provided with a light emitting device. The pixel circuit layer includes a plurality of pixel circuit units configured to drive the light emitting device to emit light. The pixel circuit layer can include a plurality of metal layers, and the plurality of metal layers can include a first metal layer M1, a second metal layer M2, and a third metal layer M3 disposed in sequence away from the substrate 1 in a direction perpendicular to the substrate 1. Different metal layers are used to realize different trace functions. For example, the first metal layer M1 can be used to form the gate of a transistor in the pixel circuit unit, the first metal layer M1 and the second metal layer M2 can be used to form the first plate and the second plate of a storage capacitor in the pixel circuit unit, and the third metal layer M3 is usually used to form the source / drain of a transistor, a bridge line, and a metal power line. Of course, the array substrate 100 can also include other metal layers, such as a second source / drain metal layer, which is not limited in detail here.

[0076] The electrostatic discharge wire 3 can be made of the same material as the first metal layer and arranged in the same layer.

[0077] Optionally, the electrostatic discharge wire 3 is made of molybdenum.

[0078] Optionally, the crack detection line 4 comprises a first titanium layer, an aluminum layer and a second titanium layer arranged in sequence and away from the substrate 1.

[0079] The electrostatic discharge wire 3 and the crack detection line 4 are arranged in different metal layers, so that the metal layer resources are reasonably utilized and the interference between the lines is avoided.

[0080] The utility model also provides a display panel which comprises the array substrate 100 in the above embodiment.

[0081] The display device provided by the utility model has the crack detection line 4 and the electrostatic discharge wire 3 arranged in the inside of the crack blocking structure 2, so that the space stacking between structures in the traditional discrete design is avoided, the space occupation of the non-display area 102 is reduced, the narrow frame design is used, the screen ratio of the display device can be improved, the display effect is enhanced, the competitiveness of the product in the market is improved, and the demand of consumers for the high screen ratio display product is met.

[0082] The utility model also provides a display device which comprises the display panel in the above embodiment.

[0083] The display device provided by the utility model has the crack detection line 4 and the electrostatic discharge wire 3 arranged in the inside of the crack blocking structure 2, so that the space stacking between structures in the traditional discrete design is avoided, the space occupation of the non-display area 102 is reduced, the narrow frame design is used, the screen ratio of the display device can be improved, the display effect is enhanced, the competitiveness of the product in the market is improved, and the demand of consumers for the high screen ratio display product is met.

[0084] Although the present application has been described in connection with certain embodiments thereof, many modifications, substitutions, and alterations, thereof will become apparent to those of ordinary skill in the art once given the benefit of the foregoing description.

[0085] It should be noted that some embodiments of the present application have been described above. Other embodiments are within the scope of the following claims. In some cases, acts or steps recited in the claims can be performed in an order other than that recited in the embodiments above and still achieve desirable results. Additionally, the process depicted in the figures can not necessarily require the particular order shown or sequential order to achieve desirable results. In certain implementations, multitasking and parallel processing can be advantageous or necessary.

[0086] Embodiments of the present application are intended to cover all such alternatives, modifications, and variations as come within the scope of the broadest possible interpretation of the appended claims. Accordingly, any and all such alternatives, modifications, and variations should be included within the scope of one or more claims.

Claims

1. An array substrate, characterized by, The array substrate has a display area and a non-display area, and comprises: A crack blocking structure in the non-display area; An electrostatic discharge trace, a projection of the electrostatic discharge trace on a plane where the array substrate is located at least partially overlaps with a projection of the crack blocking structure on the plane where the array substrate is located; A crack detection line, a projection of the crack detection line on the plane where the array substrate is located at least partially overlaps with the projection of the crack blocking structure on the plane where the array substrate is located.

2. The array substrate of claim 1, wherein, The array substrate comprises: A substrate, the crack blocking structure is arranged on one side of the substrate.

3. The array substrate of claim 1, wherein, The electrostatic discharge trace is at least partially located inside the crack blocking structure.

4. The array substrate of claim 1, wherein, The crack detection line is at least partially located inside the crack blocking structure.

5. The array substrate of claim 2, wherein, A projection of the electrostatic discharge trace on the substrate is located inside a projection of the crack blocking structure on the substrate.

6. The array substrate of claim 2, wherein, A projection of the crack detection line on the substrate is located inside the projection of the crack blocking structure on the substrate.

7. The array substrate of claim 2, wherein, The crack detection line is arranged on a side of the electrostatic discharge trace away from the substrate.

8. The array substrate of claim 2, wherein, The projection of the electrostatic discharge trace on the substrate at least partially overlaps with a projection of the crack detection line on the substrate.

9. The array substrate of claim 2, wherein, The array substrate comprises: An inorganic layer arranged on one side of the substrate; the crack blocking structure comprises a blocking groove, the blocking groove at least penetrates the inorganic layer.

10. The array substrate of claim 9, wherein, The electrostatic discharge trace is located on a side of the inorganic layer away from the substrate.

11. The array substrate of claim 9, wherein, The projection of the electrostatic discharge trace on the substrate at least partially overlaps with a projection of the inorganic layer on the substrate.

12. The array substrate of claim 9, wherein, The projection of the electrostatic discharge trace on the substrate does not overlap with a projection of the blocking groove on the substrate.

13. The array substrate of claim 9, wherein, The crack blocking structure comprises a protective layer, the protective layer comprises a covering part and a filling part, the covering part is located on a side of the inorganic layer away from the substrate, and the filling part fills the blocking groove.

14. The array substrate of claim 13, wherein, The protective layer comprises an organic layer.

15. The array substrate of claim 1, wherein, The electrostatic discharge trace comprises a first electrostatic ring and a second electrostatic ring, the first electrostatic ring at least partially surrounds the display area, and the second electrostatic ring is arranged on a side of the first electrostatic ring away from the display area.

16. The array substrate of claim 15, wherein, The first electrostatic ring and the second electrostatic ring are located inside the crack blocking structure.

17. The array substrate of claim 1, wherein, The array substrate comprises: A power signal line at least partially located in the non-display area; the crack blocking structure is arranged on a side of the power signal line away from the display area.

18. The array substrate of claim 17, wherein, The non-display area comprises a frame area surrounding the display area.

19. The array substrate of claim 2, wherein, The array substrate comprises a first metal layer, a second metal layer and a third metal layer in sequence away from the substrate, the electrostatic discharge trace is at least partially located in the first metal layer and / or the second metal layer, and the crack detection line is at least partially located in the third metal layer.

20. The array substrate of claim 1, wherein, The material of the electrostatic discharge trace comprises molybdenum.

21. The array substrate of claim 2, wherein, The crack detection line comprises a first titanium layer, an aluminum layer and a second titanium layer in sequence away from the substrate.

22. A display panel comprising: The display panel comprises the array substrate of any one of claims 1-21.

23. A display device comprising: The display device comprises the display panel of claim 22.

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