Display panel and manufacturing method thereof, and display device

Abstract

The present invention discloses a display panel and a manufacturing method thereof, and a display device. The display panel comprises: an array substrate and a color film substrate arranged opposite to each other, the frame area of ​​the array substrate comprises: a frame start signal line and a cascaded multi-stage GOA unit; a target electrode structure, comprising: an introduction electrode and a bridging electrode arranged opposite to the introduction electrode, wherein the introduction electrode is arranged in the frame area of ​​the array substrate, comprising: a first sub-electrode and a second sub-electrode, the first sub-electrode of the target electrode structure is connected to the frame start signal line, the second sub-electrode is connected to the signal input end of the first-stage GOA unit, and the bridging electrode is arranged in the frame area of ​​the color film substrate; a liquid crystal layer arranged between the array substrate and the color film substrate and a sealing glue layer arranged around the liquid crystal layer, the sealing glue layer is doped with conductive particles, and the first sub-electrode of the target electrode structure is connected to the second sub-electrode through the conductive particles and the bridging electrode.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a display device. Background Art

[0002] Liquid Crystal Display (LCD) has the advantages of light weight, low power consumption, high image quality, low radiation and easy portability, and is widely used in modern information equipment. In some application scenarios, such as vehicle-mounted scenarios, LCD products come in a variety of sizes due to the application characteristics and personalized needs of the products. The masks used for large-size LCD products are expensive, with a single set of masks costing about 100 million yuan, so it is necessary to share a set of masks to achieve adjustable multi-size product production.

[0003] However, in order to realize the production of LCD products of various sizes by sharing a set of masks, it is also necessary to consider the introduction of the frame start signal of GOA (Gate On Array, array substrate row drive) on the data binding opposite side (Data Pad Opposite, DPO side). Summary of the invention

[0004] In view of the above problems, the present invention is proposed to provide a display panel and a manufacturing method thereof, and a display device that overcome the above problems or at least partially solve the above problems.

[0005] In a first aspect, an embodiment of the present specification provides a display panel, comprising: a display area and a frame area located around the display area, wherein the display panel comprises:

[0006] An array substrate and a color filter substrate are arranged opposite to each other, wherein the border area of ​​the array substrate includes: a frame start signal line and a cascaded multi-stage GOA unit;

[0007] A target electrode structure, comprising: an introduction electrode and a bridging electrode arranged opposite to the introduction electrode, wherein the introduction electrode is arranged in the border area of ​​the array substrate, and comprises: a first sub-electrode and a second sub-electrode, the first sub-electrode of the target electrode structure is connected to the frame start signal line, the second sub-electrode is connected to the signal input end of the first-stage GOA unit, and the bridging electrode is arranged in the border area of ​​the color filter substrate;

[0008] A liquid crystal layer is arranged between the array substrate and the color film substrate, and a sealing glue layer is arranged around the liquid crystal layer, wherein the sealing glue layer is doped with conductive particles, and the first sub-electrode of the target electrode structure is connected to the second sub-electrode through the conductive particles and the bridging electrode.

[0009] Furthermore, the orthographic projection of the bridging electrode of the target electrode structure on the array substrate at least partially overlaps with the first sub-electrode and the second sub-electrode, respectively, and the overlapping regions corresponding to the first sub-electrode and the second sub-electrode are the first overlapping region and the second overlapping region, respectively;

[0010] The orthographic projection of the sealing glue layer on the array substrate at least partially overlaps with the first overlapping area and the second overlapping area respectively.

[0011] Furthermore, the display panel further comprises: at least one alternative electrode structure, the alternative electrode structure having the same structure as the target electrode structure, the first sub-electrode of the alternative electrode group structure being conductively connected to the frame start signal line, the second sub-electrode of the alternative electrode structure being conductively connected to the signal input terminal of the m-th level GOA unit, m being greater than 1, and the second sub-electrodes of different alternative electrode structures being conductively connected to the signal input terminals of different levels of GOA units;

[0012] At least one of the first sub-electrode, the second sub-electrode and the bridging electrode of the alternative electrode structure is configured to be insulated from the conductive particles in the sealing glue layer.

[0013] Furthermore, the target electrode structure and the at least one candidate electrode structure are arranged at intervals along a row scanning direction, and the candidate electrode structure is closer to a data binding side of the display panel than the target electrode structure.

[0014] Further, the sealant layer includes a first sealant segment extending along a first direction and a second sealant segment extending along a second direction, the second direction is parallel to the row scanning direction, and the first direction is perpendicular to the second direction;

[0015] The alternative electrode structure is located on a side of the second frame-sealing glue segment close to the display area, and has a gap with the second frame-sealing glue segment.

[0016] Furthermore, the multi-level GOA unit located in the same side border area includes: M first-level GOA units, the target electrode structure includes: M second sub-electrodes, M is greater than or equal to 1, and each second sub-electrode in the target electrode structure is connected to the signal input end of one of the first-level GOA units.

[0017] Furthermore, the bridging electrode is arranged in the same layer as a target electrode layer located in a display area of ​​the color filter substrate.

[0018] Furthermore, the first sub-electrode and the second sub-electrode are arranged in the same layer as the metal layer where the frame start signal line is located; or

[0019] The border area of ​​the array substrate also includes: an interlayer insulating layer, which is stacked above the metal layer where the frame start signal line is located, the first sub-electrode and the second sub-electrode are stacked on the interlayer insulating layer, the first sub-electrode in the target electrode structure is connected to the frame start signal line through a first via hole, and the second sub-electrode in the target electrode structure is connected to the signal input end of the first-level GOA unit through a second via hole.

[0020] Furthermore, the weight percentage of the conductive particles doped in the frame adhesive layer is 1% to 2%, and the particle size of the conductive particles is greater than or equal to the spacing distance between the array substrate and the color filter substrate.

[0021] In a second aspect, an embodiment of the present specification provides a method for manufacturing a display panel, the method comprising:

[0022] An array substrate of a first size and a color filter substrate of a first size are provided, and a target electrode structure is formed, wherein the array substrate of the first size and the color filter substrate of the first size include a display area, a frame area, and a cutting area located outside the frame area on at least one side, and the target electrode structure includes: an introduction electrode arranged in the frame area of ​​the array substrate and a bridging electrode correspondingly arranged in the frame area of ​​the color filter substrate, the introduction electrode includes: a first sub-electrode and a second sub-electrode, the first sub-electrode of the target electrode structure is connected to a frame start signal line located in the frame area of ​​the array substrate, and the second sub-electrode is connected to a signal input terminal of a first-level GOA unit located in the frame area of ​​the array substrate;

[0023] Forming a sealing glue layer doped with conductive particles on the color filter substrate of the first size, and dripping liquid crystal at least in the display area of ​​the array substrate of the first size, wherein the sealing glue layer at least partially overlaps with the bridging electrode of the target electrode structure;

[0024] Aligning the array substrate of the first size with the color filter substrate of the first size to form a display panel of the first size including a liquid crystal layer, and making the first sub-electrode of the target electrode structure conductive with the second sub-electrode through the conductive particles in the frame sealant and the bridging electrode;

[0025] The cutting area of ​​the display panel of the first size is cut off to obtain a display panel of the second size.

[0026] In a second aspect, the embodiments of the present specification provide the array substrate of the first size and the color filter substrate of the first size, and form a target electrode structure, including:

[0027] Using a first mask corresponding to the array substrate of the first size, a film layer of the array substrate of the first size is formed in the display area, the frame area and the cutting area, and at least an introduction electrode of the target electrode structure is formed in the frame area by shielding exposure, wherein at least a pattern of the introduction electrode corresponding to the target electrode structure is pre-configured on the first mask;

[0028] A second mask plate corresponding to the color filter substrate of the first size is used to form a film layer of the color filter substrate of the first size in the display area, the frame area and the cutting area by blocking exposure, and at least a bridging electrode of the target electrode structure is formed in the frame area, wherein the second mask plate is pre-configured with at least a pattern of the bridging electrode corresponding to the target electrode structure.

[0029] Furthermore, the first mask plate is pre-configured with a pattern corresponding to the introduction electrodes of multiple alternative electrode structures, and the second mask plate is pre-configured with a pattern of bridging electrodes corresponding to the multiple alternative electrode structures, each alternative electrode structure corresponds to a display panel of a size, and the alternative electrode structure corresponding to the display panel of the second size is used as the target electrode structure.

[0030] In a third aspect, an embodiment of the present specification provides a display device, including: the display panel provided in the first aspect above.

[0031] The technical solutions provided in the embodiments of this specification have at least the following technical effects or advantages:

[0032] The display panel provided in the embodiments of the present specification effectively realizes the introduction of the frame start signal of the first-level GOA unit located on the DPO side by doping conductive particles in the sealing glue layer and adding a bridging electrode on the color film substrate side, so that the first sub-electrode connected to the start frame signal line STV is electrically connected to the second sub-electrode connected to the first-level GOA unit through the conductive particles in the sealing glue layer and the bridging electrode.

[0033] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0035] Figure 1 A schematic cross-sectional structure diagram of a display panel provided in an embodiment of this specification is shown;

[0036] Figure 2 Shows Figure 1 Schematic diagram of functional partitioning of the array substrate;

[0037] Figure 3 A schematic diagram showing the structure of a gate driving circuit in an array substrate is shown;

[0038] Figure 4 A schematic diagram of an exemplary target electrode structure in an embodiment of this specification is shown;

[0039] Figure 5 A schematic diagram showing another exemplary target electrode structure in an embodiment of this specification is shown;

[0040] Figure 6 A schematic diagram of a top view of a display panel provided in an embodiment of the present specification is shown. Figure 1 ;

[0041] Figure 7 Shows Figure 6 AA cross section in;

[0042] Figure 8 A schematic diagram of a top view of a display panel provided in an embodiment of the present specification is shown. Figure 2 ;

[0043] Fig. 9 A flow chart showing a method for manufacturing a display panel provided in an embodiment of this specification is shown;

[0044] Fig.10 A top view of the structure of an array substrate of a first size provided in an embodiment of this specification is shown;

[0045] Fig.11 A top view of a color filter substrate of a first size provided in an embodiment of this specification is shown;

[0046] Fig.12 Shown in Fig.11 The schematic diagram of the structure after the sealing glue layer is formed on the color film substrate is shown. DETAILED DESCRIPTION

[0047] Figure 1 A schematic diagram of a display panel structure provided in an embodiment of this specification is shown in FIG. Figure 1As shown, the display panel 10 includes an array substrate 11 (Array), a color film substrate 12 (CF) and a liquid crystal layer 13 (LC). After the array substrate 11 and the color film substrate 12 are aligned (Cell), the liquid crystal layer 13 is filled between the array substrate 11 and the color film substrate 12. The display panel 10 includes a display area 100 and a frame area located around the display area 100. The display area 100 includes a pixel array formed by arranging a plurality of pixel units, and the pixel array includes pixel rows extending along a first direction and pixel columns extending along a second direction. The second direction is parallel to the row scanning direction of the pixel array, and the first direction is perpendicular to the second direction.

[0048] The display area of ​​the array substrate 11 is provided with a pixel circuit for controlling the display of the pixel unit. The pixel circuit includes a plurality of gate lines and a plurality of data lines that are cross-arranged, and also includes thin film transistors connected between the gate lines and the data lines. The thin film transistors are arranged corresponding to the pixel units. The thin film transistors of the pixel units in the same row are connected to the same gate line, and the thin film transistors of the pixel units in the same column are connected to the same data line.

[0049] The border area of ​​the array substrate 11 is provided with: a gate driving circuit and a data driving circuit, the gate driving circuit is connected to the gate line of the display area, and the data driving circuit is connected to the data line of the display area. When in use, the gate driving circuit outputs a gate driving signal to scan each pixel unit in the pixel array row by row; the data driving circuit can convert the display data to be displayed into a data voltage signal, and while scanning each row of gate lines, the data driving circuit writes the data voltage signal corresponding to the row of pixels into the pixel circuit of the row of pixels through each data line to light up the row of pixel units, thereby realizing the screen display of the entire display area 100.

[0050] like Figure 2 As shown, the border area of ​​the array substrate 11 can be divided into: Figure 2 The first side 101 and the second side 102 are arranged opposite to each other along the x-axis direction in the figure, and the second side 101 and the second side 102 are arranged opposite to each other along the second direction (such as Figure 2 The third side 103 and the fourth side 104 are arranged opposite to each other (in the y-axis direction); the data driving circuit is bound to the third side 103 or the fourth side 104, and the side bound to the data driving circuit is usually called the DP (Data Pad, data binding side) side, and the side of the third side 103 and the fourth side 104 opposite to the DP side is usually called the DPO (Data Pad Opposite, data binding opposite side) side. It should be noted that the following Figure 6 and Figure 8In the example, the fourth side is the DP side and the third side is the DPO side. The gate drive circuit can be arranged on the first side 101 or the second side 102, that is, a single-side drive mode is adopted; or, it can be arranged on both the first side 101 and the second side 102, that is, a double-side drive mode is adopted.

[0051] The gate drive circuit adopts GOA (Gate Driver on Array, array substrate row drive) design, such as Figure 3 As shown, the gate driving circuit includes: a plurality of GOA units cascaded in a second direction (such as Figure 3 The signal lines extend along the second direction, and the signal lines generally include a frame start signal line STV, a clock signal line (such as Figure 3 CLK1 and CLK2 shown in FIG. 1 ), power supply signal lines of different voltages (such as Figure 3 VDD and VSS) and reset signal line Reset ( Figure 3 ), etc., for details, please refer to the relevant technology. These signal lines are connected to the GOA unit through connecting wires, and the GOA unit is provided with a connection terminal connected to the connecting wire. It should be noted that the frame start signal line STV is connected to the signal input terminal of the first-stage GOA unit, and the first-stage GOA unit is usually on the DPO side.

[0052] In order to save costs, a full set of masks of existing large-size LCD screens can be shared, and a display screen of the required target size can be prepared by partial blocking exposure and cutting to meet the scene requirements. Taking the production of a 63-inch LCD screen by sharing a full set of masks of an 86-inch LCD screen as an example, the mask of the 86-inch LCD screen can be used to prepare an 86-inch array substrate and a color filter substrate by partial blocking exposure, and then a frame sealant is applied on the 86-inch color filter substrate to define a 63-inch area, and then the 86-inch array substrate and the color filter substrate are assembled, and then a 63-inch LCD screen can be obtained by cutting.

[0053] For example, for the production of strip screens using a bilateral drive mode, it is necessary to use a baffle to block the partial area of ​​the mask corresponding to the DPO side of the original large-size product during exposure according to the size of the required product. However, this partial blocking exposure method will make the GOA unit originally located at the kth level (k is greater than 1) in the large-size product become the first-level GOA unit in the target-size product, but the first-level GOA unit does not have a connection line with the frame start signal line STV. Therefore, it is necessary to consider the introduction of the frame start signal on the DPO side.

[0054] In some examples, the frame start signal is introduced on the DPO side by using tungsten powder welding or welding with Array Repair equipment. However, this method requires additional Repair operations, which is cumbersome and affects large-scale continuous production. There is also a risk of cold soldering, and the stability of the connection cannot be ensured, nor can the high and low temperature reliability characteristics of the product be guaranteed.

[0055] Therefore, the embodiment of this specification provides a scheme for introducing the frame start signal line STV on the DPO side, by doping the conductive particles 141 in the sealant layer 14, adding a bridge electrode on the color film substrate 12 side, and making the first sub-electrode connected to the start frame signal line STV conduct with the second sub-electrode connected to the first-level GOA unit through the conductive particles 141 in the sealant layer 14 and the bridge electrode, effectively realizing the introduction of the frame start signal of the first-level GOA unit on the DPO side. Compared with the introduction method of tungsten powder welding or welding using Array Repair equipment, it is conducive to simplifying the process operation to achieve large-scale continuous production, and is conducive to ensuring the reliability of the connection.

[0056] The following will describe in detail the exemplary embodiments of the display panel and its manufacturing method, and the display device provided by the embodiments of this specification with reference to the accompanying drawings. It should be noted that in the accompanying drawings, the sizes of the layers and regions may be exaggerated for clarity of illustration. Although the exemplary embodiments of the present specification are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0057] It should be noted that the term "and / or" used herein is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The term "plurality" used herein includes two or more than two.

[0058] In the first aspect, the embodiments of the present specification provide a display panel 10, including: a display area 100 and a frame area located around the display area 100. From the perspective of the stacked structure, Figure 1 As shown, the display panel 10 includes: an array substrate 11 and a color filter substrate 12 that are arranged opposite to each other, and a liquid crystal layer 13 between the array substrate 11 and the color filter substrate 12 .

[0059] like Figure 3As shown, the border area of ​​the array substrate 11 includes: a frame start signal line STV and a cascaded multi-stage GOA unit. It can be understood that the frame start signal line STV and the cascaded multi-stage GOA unit are located in the border area of ​​the first side 101 and / or the second side 102. Of course, in addition to the frame start signal line STV, other GOA signal lines are also included, such as a clock signal line CLK, a power signal line, and a reset signal line Reset, etc., which are specifically set according to actual control needs, and this embodiment will not be described in detail.

[0060] The input signal of the first-level GOA unit is provided by the frame start signal line STV. The output of each level of GOA unit is not only used as the gate drive signal of the corresponding row of pixels, but also as the input signal of the next level of GOA unit (except the last level of GOA unit), and also as the reset signal of the previous level of GOA unit (except the first level of GOA unit).

[0061] In order to introduce the frame start signal transmitted in the frame start signal line STV into the first-stage GOA unit, such as Figure 4 As shown, the display panel 10 further includes a target electrode structure 15. The target electrode structure 15 includes: an introduction electrode and a bridge electrode 121 arranged opposite to the introduction electrode. The introduction electrode is arranged in the border area of ​​the array substrate 11, and the bridge electrode 121 is arranged in the border area of ​​the color filter substrate 12. Figure 4 As shown, the introduction electrode includes: a first sub-electrode 111 and a second sub-electrode 112 arranged at intervals. The first sub-electrode 111 of the target electrode structure 15 is connected to the frame start signal line STV, and the second sub-electrode 112 is connected to the signal input terminal INPUT_1 of the first-stage GOA unit.

[0062] The shapes and sizes of the first sub-electrode 111 , the second sub-electrode 112 , and the bridging electrode 121 may be set according to the requirements of the actual application scenario, for example, they may be rectangular, elliptical, or other irregular shapes, which is not limited in this embodiment.

[0063] It should be noted that the number of the second sub-electrodes 112 is determined by the number of GOA units at each level. For example, the multi-level GOA units located in the same side frame area include: M first-level GOA units, M is greater than or equal to 1, and accordingly, the target electrode structure 15 also includes: M second sub-electrodes 112 corresponding to the M first-level GOA units. Each second sub-electrode 112 in the target electrode structure 15 is connected to the signal input end of a first-level GOA unit.

[0064] For example, Figure 4 As shown, when M is equal to 1, a second sub-electrode 112 is correspondingly provided. Figure 5As shown, when M is equal to 4, four second sub-electrodes 112 need to be set accordingly, namely, second sub-electrode 112a, second sub-electrode 112b, second sub-electrode 112c and second sub-electrode 112d, and the four first-level GOA units are G1_1, G1_2, G1_3 and G1_4, then the second sub-electrode 112a is connected to the signal input terminal INPUT_14 of G1_4, the second sub-electrode 112b is connected to the signal input terminal INPUT_13 of G1_3, the second sub-electrode 112c is connected to the signal input terminal INPUT_12 of G1_2, and the second sub-electrode 112d is connected to the signal input terminal INPUT_11 of G1_1. This article mainly takes each level of GOA unit as a single, that is, the number of second sub-electrode 112 is one as an example for description.

[0065] like Figure 6 As shown, the display panel 10 further includes: a sealant layer 14 disposed around the liquid crystal layer 13. The sealant layer 14 is disposed in the frame area to define the size of the target product. In this embodiment, the sealant layer 14 is doped with conductive particles 141, such as Figure 7 As shown, the first sub-electrode 111 of the target electrode structure 15 is electrically connected to the second sub-electrode 112 through the conductive particles 141 and the bridge electrode 121. It should be noted that when there are multiple second sub-electrodes 112, the first sub-electrode 111 of the target electrode structure 15 is electrically connected to each second sub-electrode 112 through the conductive particles 141 and the bridge electrode 121.

[0066] This embodiment effectively realizes the introduction of the frame start signal on the DPO side by adding conductive particles 141 into the sealant layer 14 and arranging the bridge electrode 121 on the color filter substrate 12. Compared with the introduction method of tungsten powder welding or welding using Array Repair equipment, it is conducive to simplifying the process operation to achieve large-scale continuous production, and is conducive to ensuring the reliability of the connection and the high and low temperature reliability characteristics of the product.

[0067] The doping concentration of the conductive particles 141 in the sealant layer 14 can be set according to the needs of the actual application scenario. For example, the doping concentration can be controlled so that the conductive particles 141 are dispersed in the sealant layer 14 and adjacent conductive particles 141 do not contact each other.

[0068] For example, the conductive particles 141 may be metal particles with high conductivity, such as conductive gold balls. For example, the weight percentage of the conductive particles 141 doped in the sealant layer 14 may be 1% to 2%, and the particle size of the conductive particles 141 may be slightly greater than or equal to the spacing distance between the array substrate 11 and the color film substrate 12, that is, the thickness of the cell, that is, the thickness of the liquid crystal layer 13. For example, if the cell thickness is 3.0 microns, the particle size of the conductive particles 141 may be 3.1 microns or 3.2 microns, etc., so that after the cell is formed, it is subjected to the pressure applied by the introduction electrodes and the bridging electrode 121 on both sides in the direction perpendicular to the surface of the display panel 10, thereby ensuring the conduction reliability.

[0069] It is understandable that the target electrode structure 15 needs to be set at the position where the sealing glue layer 14 passes. For example, the orthographic projection of the bridging electrode 121 in the target electrode structure 15 on the array substrate 11 overlaps at least partially with the first sub-electrode 111 and the second sub-electrode 112, respectively, and the overlapping areas corresponding to the first sub-electrode 111 and the second sub-electrode 112 are respectively the first overlapping area and the second overlapping area. The orthographic projection of the sealing glue layer 14 on the array substrate 11 overlaps at least partially with the first overlapping area and the second overlapping area, respectively, so as to ensure that the first sub-electrode 111 and the bridging electrode 121 can be connected through the conductive particles 141, and the second sub-electrode 112 and the bridging electrode 121 can be connected through the conductive particles 141.

[0070] For example, Figure 6 As shown, the sealant layer 14 may include: Figure 6 The first sealing glue segment extending in the x-axis direction of the image, and the first sealing glue segment extending in the second direction (such as Figure 6 In some examples, the target electrode structure 15 may be disposed on the DPO side (eg, Figure 6 The first side 101 and / or the second side 102 of the first sealing glue section of the third side 103 in the display panel 10 are connected to the target electrode structure 15 so that the target electrode structure 15 is as close as possible to the frame start signal line STV and the first-level GOA unit to be connected, thereby reducing the wiring distance. The specific arrangement can be based on the distribution of the gate drive circuit in the actual product. For example, when the unilateral drive mode is adopted, the gate drive circuit is arranged on the first side 101 of the display panel 10, and the target electrode structure 15 can be arranged on the first side 101 of the first sealing glue section on the DPO side, the gate drive circuit is arranged on the second side 102 of the display panel 10, and the target electrode structure 15 can be arranged on the second side 102 of the first sealing glue section on the DPO side. Figure 6 As shown, when the bilateral driving mode is adopted, the target electrode structure 15 can be provided on both the first side 101 and the second side 102 of the first sealant section on the DPO side.

[0071] It should be noted that in actual application scenarios, there may be one or more target sizes required. For scenarios where a mask for a large-size product is required to be shared to produce display panels 10 of multiple target sizes, patterns corresponding to several electrode structures can be reserved in the shared mask so as to solve the problem of introducing the frame start signal on the DPO side of each size product. Which electrode structure is actually selected as the target electrode structure 15 is determined by the target size of the display panel 10 currently being produced. A bridge circuit is formed between the first sub-electrode 111, the bridging electrode 121, and the second sub-electrode 112 of the target electrode structure 15 through the conductive particles 141 in the frame-sealing glue layer 14. For ease of distinction, the remaining electrode structures except the target electrode structure 15 are referred to as alternative electrode structures 16 in this article.

[0072] Based on this, for the display panels 10 of various target sizes produced in the above manner, except for the display panel 10 with the smallest size, the display panels 10 of the remaining sizes further include: at least one alternative electrode structure 16, such as Figure 8 It should be noted that the alternative electrode structure 16 has the same structure as the target electrode structure 15, both of which include a first sub-electrode 111 and a second sub-electrode 112 disposed on the array substrate 11 and a corresponding bridging electrode 121 disposed on the color filter substrate 12, but the specific location of the frame area and the connected GOA unit are different.

[0073] The first sub-electrode 111 of the alternative electrode structure 16 is connected to the frame start signal line STV, and the second sub-electrode 112 of the alternative electrode structure 16 is connected to the signal input end of the m-th level GOA unit, where m is greater than 1. The second sub-electrodes 112 of different alternative electrode structures 16 are connected to the signal input ends of different levels of GOA units, and the specific value of m is determined according to the product size corresponding to the alternative electrode structure 16.

[0074] At least one of the first sub-electrode 111 , the second sub-electrode 112 and the bridging electrode 121 of the alternative electrode structure 16 is configured to be insulated from the conductive particles 141 in the sealing glue layer 14 to prevent the frame start signal from being introduced into other GOA units except the first-level GOA unit.

[0075] For example, the target electrode structure 15 and the at least one alternative electrode structure 16 may be arranged along the row scanning direction (eg Figure 8 The candidate electrode structures 16 are arranged at intervals in the y-axis direction. The candidate electrode structures 16 are closer to the DP side of the display panel 10 than the target electrode structures 15. For example, Figure 8The schematic diagram of electrode structure arrangement is shown by taking the bilateral driving mode as an example. The first side 101 frame and the second side 102 frame of the display panel 10 are both provided with a target electrode structure 15 and six alternative electrode structures 16. The target electrode structure 15 and the six alternative electrode structures 16 are arranged in sequence along the second direction. In this application scenario, the mask used can be used to produce display panels 10 of at least six sizes in addition to the current size. Of course, Figure 8 The number of alternative electrode structures 16 shown in FIG. 1 is for example only and is not intended to be limiting.

[0076] For example, the at least one alternative electrode structure 16 may be located on a side of the second sealant segment close to the display area 100 and have a gap with the second sealant segment. In this way, the length of the second sealant segment and the position of the first sealant segment in the second direction may be adjusted according to the required size of the display panel 10, so that the first sealant segment passes through the target electrode structure 15 but not the alternative electrode structure 16, thereby ensuring that the target electrode structure 15 is conductive and the alternative electrode structure 16 is not conductive.

[0077] In some examples, the first sub-electrode 111 and the second sub-electrode 112 of the target electrode structure 15 and the alternative electrode structure 16 can be arranged in the same layer as the metal layer where the frame start signal line STV is located to simplify the process flow. It can be understood that the same layer arrangement mentioned in this article refers to sharing the same mask and being formed in the same film forming process using the same material. For example, a pattern corresponding to the first sub-electrode 111 and the second sub-electrode 112 can be added to the mask used to form the metal layer, so that when the metal layer is formed on the array substrate 11, the first sub-electrode 111 that is connected to the frame start signal line STV and the second sub-electrode 112 that is connected to the signal input end of the corresponding level GOA unit can be formed at the same time, that is, the introduction electrode of the target electrode structure 15 is formed. For another example, a part of the frame start signal line STV can be used as the first sub-electrode 111, and a part of the signal input end of the corresponding level GOA unit can be used as the second sub-electrode 112. This embodiment is not limited to this.

[0078] In some other examples, the first sub-electrode 111 and the second sub-electrode 112 may also be arranged in a different layer from the metal layer where the frame start signal line STV is located, and the first sub-electrode 111 and the second sub-electrode 112 are electrically connected to the frame start signal line STV and the signal input terminal of the corresponding level GOA unit through vias. For example, the border area of ​​the array substrate 11 also includes: an interlayer insulating layer stacked above the metal layer where the frame start signal line is located, the first sub-electrode 111 and the second sub-electrode 112 are stacked on the interlayer insulating layer, and the first via and the second via are correspondingly arranged in the interlayer insulating layer, so that the first sub-electrode 111 is connected to the frame start signal line STV through the first via, and the second sub-electrode 112 is connected to the signal input terminal of the corresponding level GOA unit through the second via. This is conducive to improving the layout flexibility of the first sub-electrode 111 and the second sub-electrode 112.

[0079] Accordingly, the bridging electrode 121 located on the array substrate 11 can be arranged in the same layer as the target electrode layer located in the display area 100 in the color filter substrate 12 to simplify the process flow. The target electrode layer can be specifically determined according to the display mode adopted by the display panel 10. For example, for a twisted nematic (TN) type display panel, the bridging electrode 121 can be arranged in the same layer as the Com common electrode in the color filter substrate 12; for an advanced superdimensional field switch (ADS) type display panel, the bridging electrode 121 can be arranged in the same layer as the shielding electrode layer in the color filter substrate 12 for shielding the external electromagnetic field, and the shielding electrode layer is usually made of a transparent conductive film.

[0080] In a second aspect, the embodiments of this specification also provide a method for manufacturing a display panel, which is used to manufacture the display panel provided in the embodiment of the first aspect. Fig. 9 As shown, the method may at least include the following steps S101 to S104.

[0081] Step S101, providing an array substrate of a first size and a color filter substrate of a first size, and forming a target electrode structure, wherein the array substrate of the first size and the color filter substrate of the first size include a display area, a frame area, and a cutting area outside at least one side of the frame area.

[0082] It should be noted that the specific implementation of the target electrode structure can refer to the relevant description in the first aspect and will not be repeated here. When cutting the first-size product to form the second-size product, it is necessary to reserve a frame area on the cutting side of the first-size product so that the display area of ​​the second-size product after cutting has a complete frame around it.

[0083] Step S102 , forming a sealing glue layer doped with conductive particles on a color filter substrate of a first size, and dripping liquid crystal at least in a display area of ​​an array substrate of the first size, wherein the sealing glue layer at least partially overlaps with a bridge electrode of a target electrode structure.

[0084] The frame-sealing glue layer is used to define the size of the display panel to be obtained. In order to ensure that the first sub-electrode of the target electrode structure is connected to the second sub-electrode through the conductive particles in the frame-sealing glue and the bridging electrode, the frame-sealing glue layer needs to at least partially overlap with the bridging electrode of the target electrode structure. For example, the frame-sealing glue layer can cover the entire bridging electrode, or at least ensure that the area of ​​the bridging electrode that overlaps with the first sub-electrode and the area that overlaps with the second sub-electrode are covered by the frame-sealing glue layer.

[0085] Step S103 , assembling an array substrate of a first size and a color filter substrate of a first size to form a display panel of a first size including a liquid crystal layer, and making the first sub-electrode of the target electrode structure conductive with the second sub-electrode through the conductive particles in the sealant and the bridging electrode.

[0086] Step S104 , cutting off the cutting area of ​​the display panel of the first size to obtain a display panel of the second size.

[0087] In some examples, in order to simplify the process operations, slight modifications may be made to the first mask corresponding to the array substrate of the first size and the second mask corresponding to the color film substrate of the first size, by adding at least a pattern of the introduction electrode (i.e., the first sub-electrode and the second sub-electrode) corresponding to the target electrode structure to the first mask, and correspondingly, adding at least a pattern of the bridging electrode corresponding to the target electrode structure to the second mask.

[0088] Fig.10 shows a schematic structural diagram of an array substrate of a first size, Fig.11 shows a schematic structural diagram of a color film substrate of a first size, Fig.12 The schematic diagram of the structure of forming a sealing glue layer on a color film substrate of the first size is shown. Figure 10-12 The process of providing an array substrate of a first size and a color filter substrate of a first size and forming a target electrode structure may include:

[0089] Using a first mask corresponding to the array substrate of the first size, a film layer of the array substrate of the first size is formed in the display area 201, the frame area 202 and the cutting area 203 by shielding exposure, and at least an introduction electrode (i.e., a first sub-electrode 111 and a second sub-electrode 112) of the target electrode structure 15 is formed in the frame area 202;

[0090] By using the second mask corresponding to the color filter substrate of the first size, a film layer of the color filter substrate of the first size is formed in the display area 301, the frame area 302 and the cutting area 303 through shielding exposure, and at least a bridging electrode 121 of the target electrode structure 15 is formed in the frame area 302.

[0091] Of course, in order to improve the versatility of the first mask and the second mask so that they can be applied to the production of display panels of more sizes, patterns corresponding to the lead-in electrodes corresponding to the multiple alternative electrode structures 16 can also be pre-configured on the first mask, and correspondingly, patterns of the bridging electrodes 121 corresponding to the multiple alternative electrode structures 16 can be pre-configured on the second mask, so that each alternative electrode structure 16 corresponds to a display panel of one size. When actually manufacturing a display panel of the second size, the alternative electrode structure 16 corresponding to the display panel of the second size is used as the target electrode structure 15.

[0092] For example, when seven groups of alternative electrode structures 16 are correspondingly arranged on the first mask plate and the second mask plate, in addition to the original first size, the set of mask plates can be used to produce display panels of seven other different sizes. The closer the alternative electrode structure 16 is to the DP side, the smaller the display panel size is. For example, the panel sizes corresponding to the seven groups of alternative electrode structures 16 are S1-S7, and S1-S7 decreases in sequence. When producing a display panel of size S1, the alternative electrode structure 16 farthest from the DP side is used as the target electrode structure 15 of the display panel, and the other six groups of alternative electrode structures 16 will also be retained on the display panel, such as Figure 8 shown.

[0093] Of course, in other examples, the first mask corresponding to the array substrate of the first size and the second mask corresponding to the color filter substrate of the first size may be kept unchanged, and a mask for forming the target electrode structure may be added, which is not limited in this embodiment.

[0094] In a third aspect, the embodiments of this specification further provide a display device, including: the display panel provided in the first aspect. For example, the display device can be: electronic paper, mobile phone, tablet computer, television, monitor, notebook computer, digital photo frame, navigator, or any other product or component with display function.

[0095] In the above description, the technical details such as the composition of each layer of the product are not described in detail. However, those skilled in the art should understand that various technical means can be used to form layers, regions, etc. of desired shapes. In addition, in order to form the same structure, those skilled in the art can also design methods that are not completely the same as the methods described above. Although each embodiment is described separately above, it does not mean that the measures in each embodiment cannot be used in combination to advantage.

[0096] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0097] In addition, those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure is limited to these examples; based on the ideas of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as described above, which are not provided in detail for the sake of simplicity.

[0098] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

Claims

1. A display panel, comprising: The display area and the frame area located around the display area are characterized in that the display panel includes: An array substrate and a color filter substrate are arranged opposite to each other, wherein the border area of ​​the array substrate comprises: a frame start signal line and a cascaded multi-stage GOA unit, and the border area of ​​the array substrate is divided into a first side and a second side arranged opposite to each other along a first direction; A target electrode structure, comprising: an introduction electrode and a bridging electrode arranged opposite to the introduction electrode, wherein the introduction electrode is arranged in the border area of ​​the array substrate, and comprises: a first sub-electrode and a second sub-electrode, the first sub-electrode of the target electrode structure is connected to the frame start signal line, the second sub-electrode is connected to the signal input end of the first-stage GOA unit, and the bridging electrode is arranged in the border area of ​​the color filter substrate; A liquid crystal layer disposed between the array substrate and the color filter substrate and a sealant layer disposed around the liquid crystal layer, wherein the sealant layer is doped with conductive particles, and the first sub-electrode of the target electrode structure is electrically connected to the second sub-electrode through the conductive particles and the bridging electrode; The orthographic projections of the bridging electrode of the target electrode structure on the array substrate overlap at least partially with the first sub-electrode and the second sub-electrode respectively, and the overlapping areas corresponding to the first sub-electrode and the second sub-electrode are respectively the first overlapping area and the second overlapping area; the orthographic projections of the sealing glue layer on the array substrate overlap at least partially with the first overlapping area and the second overlapping area respectively, and the first sub-electrode and the bridging electrode are electrically connected through the conductive particles, and the second sub-electrode and the bridging electrode are electrically connected through the conductive particles; The sealing glue layer includes a first sealing glue segment extending along the first direction and a second sealing glue segment extending along the second direction, the second direction is parallel to the row scanning direction, the first direction is perpendicular to the second direction, and the target electrode structure is located on the first side and / or the second side of the first sealing glue segment on the opposite side of the data binding of the display panel.

2. The display panel according to claim 1, characterized in that: Also includes: At least one alternative electrode structure, the alternative electrode structure has the same structure as the target electrode structure, both comprising a first sub-electrode and a second sub-electrode arranged on the array substrate and a bridging electrode correspondingly arranged on the color filter substrate, the first sub-electrode of the alternative electrode structure is connected to the frame start signal line, the second sub-electrode of the alternative electrode structure is connected to the signal input terminal of the m-th level GOA unit, m is greater than 1, and the second sub-electrodes of different alternative electrode structures are connected to the signal input terminals of different levels of GOA units; At least one of the first sub-electrode, the second sub-electrode and the bridging electrode of the alternative electrode structure is configured to be insulated from the conductive particles in the sealant layer; the alternative electrode structure is located on a side of the second sealant segment close to the display area.

3. The display panel according to claim 2, characterized in that: The target electrode structure and the at least one candidate electrode structure are arranged at intervals along a row scanning direction, and the candidate electrode structure is closer to a data binding side of the display panel than the target electrode structure.

4. The display panel according to claim 2, characterized in that: There is a gap between the alternative electrode structure and the second sealing glue section.

5. The display panel according to claim 1, characterized in that: The multi-level GOA unit located in the same side frame area includes: M first-level GOA units, and the target electrode structure includes: M second sub-electrodes, M is greater than or equal to 1, and each second sub-electrode in the target electrode structure is connected to the signal input end of one of the first-level GOA units.

6. The display panel according to claim 1, characterized in that: The bridging electrode is arranged in the same layer as the target electrode layer located in the display area of ​​the color filter substrate.

7. The display panel according to claim 1, characterized in that: The first sub-electrode and the second sub-electrode are arranged in the same layer as the metal layer where the frame start signal line is located; or The border area of ​​the array substrate also includes: an interlayer insulating layer, which is stacked above the metal layer where the frame start signal line is located, the first sub-electrode and the second sub-electrode are stacked on the interlayer insulating layer, the first sub-electrode in the target electrode structure is connected to the frame start signal line through a first via hole, and the second sub-electrode in the target electrode structure is connected to the signal input end of the first-level GOA unit through a second via hole.

8. The display panel according to claim 1, characterized in that: The weight percentage of the conductive particles doped in the frame adhesive layer is 1% to 2%, and the particle size of the conductive particles is greater than or equal to the spacing distance between the array substrate and the color filter substrate.

9. A method for manufacturing a display panel, characterized in that: For manufacturing a display panel according to any one of claims 1 to 8, the method comprises: An array substrate of a first size and a color filter substrate of a first size are provided, and a target electrode structure is formed, wherein the array substrate of the first size and the color filter substrate of the first size include a display area, a frame area, and a cutting area located outside the frame area on at least one side, and the target electrode structure includes: an introduction electrode arranged in the frame area of ​​the array substrate and a bridging electrode correspondingly arranged in the frame area of ​​the color filter substrate, the introduction electrode includes: a first sub-electrode and a second sub-electrode, the first sub-electrode of the target electrode structure is connected to a frame start signal line located in the frame area of ​​the array substrate, and the second sub-electrode is connected to a signal input terminal of a first-level GOA unit located in the frame area of ​​the array substrate; Forming a sealing glue layer doped with conductive particles on the color filter substrate of the first size, and dripping liquid crystal at least in the display area of ​​the array substrate of the first size, wherein the sealing glue layer at least partially overlaps with the bridging electrode of the target electrode structure; Aligning the array substrate of the first size with the color filter substrate of the first size to form a display panel of the first size including a liquid crystal layer, and making the first sub-electrode of the target electrode structure conductive with the second sub-electrode through the conductive particles in the frame sealant and the bridging electrode; A cutting area of ​​the display panel of the first size is cut off to obtain a display panel of the second size, wherein when the display panel of the first size is cut to form a display panel of the second size, a border area is reserved on the cutting side of the display panel of the first size, and the border area reserved on the cutting side serves as a border area on the opposite side of data binding of the display panel of the second size.

10. The method according to claim 9, characterized in that The providing of an array substrate of a first size and a color filter substrate of a first size, and forming a target electrode structure, includes: Using a first mask corresponding to the array substrate of the first size, a film layer of the array substrate of the first size is formed in the display area, the frame area and the cutting area, and at least an introduction electrode of the target electrode structure is formed in the frame area by shielding exposure, wherein at least a pattern of the introduction electrode corresponding to the target electrode structure is pre-configured on the first mask; A second mask plate corresponding to the color filter substrate of the first size is used to form a film layer of the color filter substrate of the first size in the display area, the frame area and the cutting area by blocking exposure, and at least a bridging electrode of the target electrode structure is formed in the frame area, wherein the second mask plate is pre-configured with at least a pattern of the bridging electrode corresponding to the target electrode structure.

11. The method according to claim 10, characterized in that The first mask plate is pre-configured with patterns corresponding to introduction electrodes corresponding to multiple alternative electrode structures, and the second mask plate is pre-configured with patterns of bridging electrodes corresponding to the multiple alternative electrode structures. Each alternative electrode structure corresponds to a display panel of a size, and the alternative electrode structure corresponding to the display panel of the second size is used as the target electrode structure.

12. A display device, characterized in that: include: The display panel according to any one of claims 1 to 8.

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