Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device, the display panel comprising: an array substrate, a liquid crystal layer and a color film substrate which are sequentially stacked; the display panel comprising a display area and a non-display area; the array substrate of the non-display area is provided with a signal line, a two-in-one silver paste point PAD and a barrier wall, the thickness of the barrier wall is higher than that of the signal line and the two-in-one silver paste point PAD, and the barrier wall is used for separating the signal line and the two-in-one silver paste point PAD; and the two-in-one silver paste point PAD comprises a panel identification code. Through the above arrangement, the process window of the point silver paste is improved, the overflow of the silver paste from affecting other film layer structures and the quality of the display panel is avoided, and "one mark for multiple uses" is also achieved, thereby further saving the space of the step area and improving the process window of the point silver paste.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] With the development of the times and the advancement of technology, people have increasingly demanding requirements for electronic products, not only in terms of functionality but also in terms of appearance. This has driven the continuous development of electronic products towards lighter, thinner, narrower, and more energy-efficient designs. In terms of production, further requirements have been placed on simpler manufacturing processes, lower costs, easier processing, and higher yield rates. With the rapid development of narrow-bezel electronic products, the width of the display device's bezel area is becoming increasingly narrow, and the manufacturing window for the stepped area structure of the display panel is also shrinking. The stepped area requires the placement of silver paste dots, signal lines, driver chips, bonding marks, Panel IDs, and other structures. This results in a shrinking operational window when setting silver paste dots, and also increases the risk of silver paste overflow, affecting the quality of other film layers and the display panel itself. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a display panel and display device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] In a first aspect, embodiments of the present invention provide a display panel, comprising: an array substrate, a liquid crystal layer, and a color filter substrate stacked sequentially;

[0006] The display panel includes a display area and a non-display area;

[0007] The array substrate in the non-display area is provided with signal lines, two-in-one silver paste dots PADs and a barrier. The thickness of the barrier is higher than that of the signal lines and the two-in-one silver paste dots PADs. The barrier is used to separate the signal lines and the two-in-one silver paste dots PADs.

[0008] The two-in-one silver paste dot PAD includes a panel identification code.

[0009] As a preferred improvement of the present invention, the array substrate includes: a substrate, and a metal layer, an insulating layer, an active layer, a passivation layer and a transparent conductive layer disposed on the substrate.

[0010] As a preferred improvement of the present invention, the barrier is disposed on the substrate, and the barrier is composed of at least one or more of the following: a metal layer of part A, an insulating layer of part A, an active layer of part A, a passivation layer of part A, and a transparent conductive layer of part A.

[0011] Wherein, the metal layer A, the insulating layer A, the active layer A, the passivation layer A, and the transparent conductive layer A are each a part of the metal layer, the insulating layer, the active layer, the passivation layer, and the transparent conductive layer.

[0012] As a preferred improvement of the present invention, the space between the retaining wall and the two-in-one silver paste point PAD is a hollow structure, with a B-part insulating layer or a B-part passivation layer.

[0013] Wherein, the insulating layer of part B and the passivation layer of part B are respectively a part of the insulating layer and the passivation layer.

[0014] As a preferred improvement of the present invention, the two-in-one silver paste dot PAD is disposed on the substrate, and the two-in-one silver paste dot PAD is composed of a C-part metal layer, a C-part passivation layer and a C-part transparent conductive layer stacked sequentially.

[0015] The passivation layer of part C includes a first contact hole, which is used to connect the metal layer of part C and the transparent conductive layer of part C.

[0016] The panel identification code is marked on any one of the C-part metal layer, C-part passivation layer and C-part transparent conductive layer;

[0017] Wherein, the C-part metal layer, the C-part passivation layer, and the C-part transparent conductive layer are each a part of the metal layer, the passivation layer, and the transparent conductive layer, respectively.

[0018] As a preferred improvement of the present invention, the metal layer includes a first metal layer and a second metal layer.

[0019] As a preferred improvement of the present invention, the two-in-one silver paste dot PAD is disposed on the substrate, and the two-in-one silver paste dot PAD includes a first metal layer of D portion, an insulating layer of D portion, a second metal layer of D portion, a passivation layer of D portion, and a transparent conductive layer of D portion stacked sequentially.

[0020] The passivation layer of part D includes a second contact hole, which is used to connect the second metal layer of part D and the transparent conductive layer of part D.

[0021] The panel identification code is set on the first metal layer of section D by marking;

[0022] Wherein, the first metal layer of part D, the insulating layer of part D, the second metal layer of part D, the passivation layer of part D, and the transparent conductive layer of part D are each a part of the first metal layer, the insulating layer, the second metal layer, the passivation layer, and the transparent conductive layer.

[0023] As a preferred improvement mode of the present invention, the projection of the first metal layer of the D part on the substrate is in the shape of a "square".

[0024] The projection of the second metal layer of the D part on the substrate is in the shape of a "doubly-square".

[0025] A groove is formed between the first metal layer and the second metal layer of the D part.

[0026] As a preferred improvement mode of the present invention, it further includes a colloidal silver paste, and the colloidal silver paste is disposed on the two-in-one silver paste dot PAD and the color film substrate.

[0027] In a second aspect, the present invention further provides a display device, including the display panel in any embodiment of the present invention.

[0028] Compared with the prior art, the advantages and positive effects of the present invention are as follows.

[0029] In the present invention, in the first aspect, by providing a barrier wall between the two-in-one silver paste dot PAD and the signal line, it can block the flow of the more fluid colloidal silver paste during silver paste dispensing, improve the process window of silver paste dispensing, and prevent silver paste overflow, which may affect the quality of other film layer structures and the display panel; in the second aspect, integrating the traditional silver paste dot and the marking position of the Panel ID (panel identification code for tracing the product history) together to form a two-in-one silver paste dot PAD, so that the two-in-one silver paste dot PAD is used as the PAD for marking the panel identification code when manufacturing the array substrate and as the PAD for silver paste dispensing in the module stage, achieving "one label for multiple uses", further saving the space of the step area and improving the process window of silver paste dispensing; in the third aspect, for the above two-in-one silver paste dot PAD, the marking of the panel identification code is laser-scribed, which will create many grooves in the metal layer or passivation layer or transparent conductive layer in this area. The more fluid colloidal silver paste will flow into the grooves. Since the silver paste flows longitudinally, the probability of lateral flow is reduced, which can also increase the process window of silver paste dispensing and prevent silver paste overflow, which may affect the quality of other film layer structures and the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic side view structure diagram of a display panel provided by the present invention;

[0031] Figure 2 It is a schematic top view structure diagram of a display panel provided by the present invention;

[0032] Figure 3 It is a schematic side view structure diagram of a display panel provided by the present invention;

[0033] Figure 4 It is a schematic side view structure diagram of a display panel provided by the present invention;

[0034] Figure 5 A side view of a two-in-one silver paste dot PAD provided by the present invention;

[0035] Figure 6 A schematic diagram of the stacked structure of a two-in-one silver paste dot PAD provided by the present invention;

[0036] Figure 7 A side view of a two-in-one silver paste dot PAD provided by the present invention;

[0037] Figure 8 A top view of a two-in-one silver paste dot PAD provided by the present invention;

[0038] Figure 9 This is a schematic diagram of the structure of a display device provided by the present invention. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Many specific details are set forth in the following description to provide a thorough understanding of the invention; however, the invention can also be practiced in ways other than those described herein, and therefore, the invention is not limited to the specific embodiments disclosed in the following specification.

[0041] With the gradual development of narrow-bezel display panels, the width of the bezel area in display devices is becoming increasingly narrow, resulting in a smaller manufacturing window for the stepped area structure of the display panel. The stepped area requires the placement of structures such as silver paste dots, signal lines, driver chips, bonding labels, and Panel ID. The silver paste dots are used to conduct static electricity and ensure the quality of the display panel. However, because silver paste is a fluid, gel-like substance, it tends to flow laterally during application, potentially covering signal lines and other structures, thus interfering with their normal function. Therefore, this invention provides a display panel and display device.

[0042] Firstly, reference Figure 1-2This invention provides a display panel comprising: an array substrate 100, a liquid crystal layer 200, and a color filter substrate 300 stacked sequentially.

[0043] The display panel 1 includes a display area 2 and a non-display area 3;

[0044] The array substrate 100 of the non-display area 3 is provided with signal lines 400, two-in-one silver paste dots PAD 500 and a barrier 600. The thickness of the barrier 600 is higher than that of the signal lines 400 and the two-in-one silver paste dots PAD 500. The barrier 600 is used to separate the signal lines 400 and the two-in-one silver paste dots PAD 500.

[0045] The two-in-one silver paste dot PAD 500 includes a panel identification code 501.

[0046] In this invention, firstly, by setting a barrier between the two-in-one silver paste dot PAD and the signal line, the highly fluid gel-like silver paste can be prevented from crossing during silver paste application, thus increasing the process window for silver paste application and preventing silver paste overflow, which could affect the quality of other film layers and the display panel; secondly, by combining traditional silver paste dots and panels... The marking bits for the ID (panel identification code used to trace product history) are integrated to form a two-in-one silver paste dot PAD. This allows the two-in-one silver paste dot PAD to be used for marking the panel identification code during the array substrate manufacturing process and for applying silver paste during the module stage, achieving "one mark for multiple uses." This further saves space in the step area and improves the process window for applying silver paste. Thirdly, the panel identification code marking on the aforementioned two-in-one silver paste dot PAD is laser-etched, which creates many grooves in the metal layer, passivation layer, or transparent conductive layer in this area. The highly fluid colloidal silver paste will flow into the grooves. The vertical flow of the silver paste reduces the probability of horizontal flow, which also increases the process window for applying silver paste and prevents silver paste overflow, which could affect the quality of other film layers and the display panel.

[0047] Preferably, this embodiment of the invention only describes the signal lines, the two-in-one silver paste dots PAD, and the barrier on one side of the display panel. In actual implementation, the number and specific location of the signal lines, the two-in-one silver paste dots PAD, and the barrier are not limited. There can be two sets of signal lines, two-in-one silver paste dots PAD, and barriers arranged symmetrically on the left and right sides, as long as the barrier separates the signal lines and the two-in-one silver paste dots PAD. Furthermore, three or more sets can also be provided.

[0048] As a preferred improvement of the present invention, the array substrate includes: a substrate, and a metal layer, an insulating layer, an active layer, a passivation layer and a transparent conductive layer disposed on the substrate.

[0049] In this embodiment of the invention, the array substrate includes at least the above-described structure, thereby enabling the normal function of the display panel. The specific configuration of the above-described structure can refer to the structure of the array substrate in the prior art.

[0050] As a preferred improvement of the present invention, the barrier is disposed on the substrate, and the barrier is composed of at least one or more of the following: a metal layer of part A, an insulating layer of part A, an active layer of part A, a passivation layer of part A, and a transparent conductive layer of part A.

[0051] Wherein, the metal layer A, the insulating layer A, the active layer A, the passivation layer A, and the transparent conductive layer A are each a part of the metal layer, the insulating layer, the active layer, the passivation layer, and the transparent conductive layer.

[0052] In this embodiment of the invention, the barrier is set by any existing layer on the array substrate, without the need for a separate barrier manufacturing process.

[0053] It should be noted that the shape, size and specifications of the retaining wall in the embodiments of the present invention are not limited. In actual implementation, it is only necessary to ensure that the retaining wall separates the signal line and the two-in-one silver paste point PAD.

[0054] Preferably, such as Figure 2 As shown, in this embodiment of the invention, the projection of the retaining wall 600 on the substrate is an "L" shape that bends toward the two-in-one silver paste point PAD.

[0055] As a preferred improvement of the present invention, the space between the retaining wall and the two-in-one silver paste point PAD is a hollow structure, with a B-part insulating layer or a B-part passivation layer.

[0056] Wherein, the insulating layer of part B and the passivation layer of part B are respectively a part of the insulating layer and the passivation layer.

[0057] Among them, reference Figure 3 When the barrier 600 and the two-in-one silver paste dot PAD 500 are hollowed out, the barrier 600 is preferably one or more of the A part insulation layer 601 or the A part passivation layer 602. When dotting the silver paste, it can further prevent the silver paste from flowing laterally and insulate it from the silver paste.

[0058] When the barrier and the two-in-one silver paste point PAD are separated by a B-part insulating layer or a B-part passivation layer, the barrier is composed of at least one or more of the following: an A-part metal layer, an A-part insulating layer, an A-part active layer, an A-part passivation layer, and an A-part transparent conductive layer. Preferably, on the side of the barrier away from the two-in-one silver paste point PAD, there is also a B-part insulating layer or a B-part passivation layer, thereby further ensuring insulation between the signal line or other structural layers and the silver paste. In this embodiment of the invention, reference... Figure 4 The barrier 600 and the two-in-one silver paste point PAD 500 are separated by a B-part insulating layer 603, and the barrier is composed of an A-part metal layer 604.

[0059] As a preferred improvement of the present invention, refer to Figure 5-6 The two-in-one silver paste dot PAD 500 is disposed on the substrate 110, and the two-in-one silver paste dot PAD 500 is composed of a C-part metal layer 510, a C-part passivation layer 520 and a C-part transparent conductive layer 530 stacked sequentially.

[0060] The C-part passivation layer 520 includes a first contact hole 521, which is used to connect the C-part metal layer 510 and the C-part transparent conductive layer 530.

[0061] The panel identification code 501 is set by marking any one of the C-part metal layer 510, C-part passivation layer 520 and C-part transparent conductive layer 530;

[0062] Wherein, the C-part metal layer, the C-part passivation layer, and the C-part transparent conductive layer are each a part of the metal layer, the passivation layer, and the transparent conductive layer, respectively.

[0063] In this embodiment of the invention, the panel identification code is marked by laser engraving, which creates numerous trenches in the C-part metal layer 510, C-part passivation layer 520, or C-part transparent conductive layer 530 of this area. This results in numerous trenches on the surface of the two-in-one silver paste dotted PAD. The highly fluid gel-like silver paste flows into these trenches, reducing the probability of lateral flow and increasing the process window for dotting the silver paste. This prevents silver paste overflow, which could affect the quality of other film layers and the display panel. The marking position of the panel identification code should not affect the first contact hole; that is, the projection of the marking position of the panel identification code onto the substrate should not coincide with the first contact hole.

[0064] As a preferred improvement of the present invention, the metal layer includes a first metal layer and a second metal layer.

[0065] As a preferred improvement of the present invention, refer to Figure 7-8, the two-in-one silver paste dot PAD 500 is disposed on the substrate 110. The two-in-one silver paste dot PAD 500 includes a first metal layer 540 of the D part, an insulating layer 550 of the D part, a second metal layer 560 of the D part, a passivation layer 570 of the D part, and a transparent conductive layer 580 of the D part stacked in sequence;

[0066] The passivation layer 570 of the D part includes a second contact hole 571 for connecting the second metal layer 560 of the D part and the transparent conductive layer 580 of the D part;

[0067] The panel identification code 501 is set on the first metal layer 540 of the D part by marking;

[0068] Wherein, the first metal layer of the D part, the insulating layer of the D part, the second metal layer of the D part, the passivation layer of the D part, and the transparent conductive layer of the D part are respectively a part of the first metal layer, the insulating layer, the second metal layer, the passivation layer, and the transparent conductive layer.

[0069] In the embodiment of the present invention, the marking of the panel identification code is laser engraved, which will create many grooves in the first metal layer 540 of this area of the D part, so that many grooves are formed on the surface of the two-in-one silver paste dot PAD. The colloidal silver paste with strong fluidity will flow into the grooves. The silver paste flows longitudinally, reducing the probability of lateral flow, and can also increase the process window of dotting silver paste, avoiding silver paste overflow and affecting the quality of other film layer structures and display panels. Among them, the marking position of the panel identification code should not affect the second contact hole, that is, the projection of the marking position of the panel identification code on the substrate should not coincide with the second contact hole.

[0070] As a preferred improvement method of the present invention, the projection of the first metal layer of the D part on the substrate 110 is in the shape of a "square";

[0071] The projection of the second metal layer of the D part on the substrate 110 is in the shape of a "doubly square";

[0072] A groove is formed between the first metal layer of the D part and the second metal layer of the D part.

[0073] The groove part makes the surface of the two-in-one silver paste dot PAD form a groove, further increasing the probability of longitudinal flow of the silver paste, increasing the process window of dotting silver paste, and avoiding silver paste overflow.

[0074] In the embodiment of the present invention, the positions of the first metal layer of the D part and the second metal layer of the D part can be interchanged.

[0075] As a preferred improvement method of the present invention, refer to Figure 1The display panel also includes a gel silver paste 700, which is disposed on the two-in-one silver paste point PAD 500 and the color filter substrate 300.

[0076] Preferably, an upper polarizer is provided above the color filter substrate, a lower polarizer is provided below the array substrate, and frame adhesive is provided on both sides of the liquid crystal layer.

[0077] Secondly, the present invention also provides a display device 10, including a display panel 20 in any embodiment of the present invention.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A display panel, characterized in that, Comprising: An array substrate, a liquid crystal layer, and a color filter substrate stacked in sequence; The display panel includes a display area and a non-display area; On the array substrate of the non-display area, signal lines, a two-in-one silver paste dot PAD, and a barrier wall are provided. The thickness of the barrier wall is higher than that of the signal lines and the two-in-one silver paste dot PAD. The barrier wall is used to separate the signal lines and the two-in-one silver paste dot PAD; The two-in-one silver paste dot PAD includes a panel identification code; The array substrate includes: a substrate, and a metal layer, an insulating layer, an active layer, a passivation layer, and a transparent conductive layer provided on the substrate. The metal layer includes a first metal layer and a second metal layer; The two-in-one silver paste dot PAD is provided on the substrate. The two-in-one silver paste dot PAD includes a D-part first metal layer, a D-part insulating layer, a D-part second metal layer, a D-part passivation layer, and a D-part transparent conductive layer stacked in sequence. The D-part first metal layer, the D-part insulating layer, the D-part second metal layer, the D-part passivation layer, and the D-part transparent conductive layer are respectively a part of the first metal layer, the insulating layer, the second metal layer, the passivation layer, and the transparent conductive layer. A second contact hole is included on the D-part passivation layer. The second contact hole is used to connect the D-part second metal layer and the D-part transparent conductive layer. The panel identification code is set on the D-part first metal layer by laser marking; The projection of the D-part first metal layer on the substrate is in the shape of a "square"; the projection of the D-part second metal layer on the substrate is in the shape of a "hui" character; a groove is formed between the D-part first metal layer and the D-part second metal layer.

2. The display panel according to claim 1, characterized in that, The barrier wall is provided on the substrate. The barrier wall is at least composed of one or more combinations of an A-part metal layer, an A-part insulating layer, an A-part active layer, an A-part passivation layer, and an A-part transparent conductive layer; Wherein, the A-part metal layer, the A-part insulating layer, the A-part active layer, the A-part passivation layer, and the A-part transparent conductive layer are respectively a part of the metal layer, the insulating layer, the active layer, the passivation layer, and the transparent conductive layer.

3. The display panel according to claim 2, characterized in that, A hollow structure, a B-part insulating layer, or a B-part passivation layer is provided between the barrier wall and the two-in-one silver paste dot PAD; Wherein, the B-part insulating layer and the B-part passivation layer are respectively a part of the insulating layer and the passivation layer.

4. The display panel according to claim 1, characterized in that, It further includes colloidal silver paste, and the colloidal silver paste is provided on the two-in-one silver paste dot PAD and the color filter substrate.

5. A display device, characterized in that, Comprising the display panel according to any one of claims 1-4.

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