CN111584588A - Display screen and display device - Google Patents
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- CN111584588A CN111584588A CN202010431629.7A CN202010431629A CN111584588A CN 111584588 A CN111584588 A CN 111584588A CN 202010431629 A CN202010431629 A CN 202010431629A CN 111584588 A CN111584588 A CN 111584588A
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
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Abstract
The invention belongs to the technical field of display devices, and particularly provides a display screen and a display device, wherein the display screen body comprises: the display screen comprises a substrate, an anode lead, a cathode lead, an anode auxiliary lead and a cathode auxiliary lead, wherein the anode lead and the cathode lead extend to the outer side of the corresponding display screen body, the anode auxiliary lead is suitable for being connected with the anode lead, and the cathode auxiliary lead is suitable for being connected with the cathode lead. By respectively leading the cathode lead and the anode lead out of the outer side of the display screen body and respectively connecting the cathode auxiliary lead and the anode auxiliary lead, the lighting reliability test can be simultaneously carried out on the whole or part of the display screen body during the lighting reliability test, the test efficiency is high, the purpose of testing the reliability of the lighting test one by one after cutting each display screen body is not needed, and the human resources are greatly saved; meanwhile, the electrode lead is led out of the outer side of the display screen body, and the appearance of the display screen body and the design of the original electrode lead are not influenced when the display screen body is cut and separated.
Description
Technical Field
The invention relates to the technical field of display devices, in particular to a display screen and a display device.
Background
The OLED (Organic Light Emitting Device, abbreviated as OLED) attracts people's attention in the display field due to its advantages of wide viewing angle, high contrast, low power consumption, fast response speed, and wide working temperature range. The OLED display screen body mainly comprises a substrate, an OLED device and a packaging sheet, and the packaging effect is achieved by utilizing the bonding of the substrate and the packaging sheet so as to ensure that water and oxygen are isolated and prolong the service life of a product.
The OLED screen body needs to be lighted to test the reliability, at present, the lighting test reliability of the OLED screen body in the industry needs to be cut into a plurality of or hundreds of modules of small OLED screen bodies on the large screen body, as shown in figure 1, then the anode conducting rubber strips and the cathode conducting rubber strips are respectively arranged on the anode lead and the cathode lead of the single cut small screen body to be lighted and aged one by one, the flow is complicated, the efficiency is low, the abrasion of the lighting and aging jig and the consumption of auxiliary materials can be increased, and the production cost of the product is increased finally. Meanwhile, the conductive adhesive tape is dirty, and the conductive adhesive tape can indirectly cause the adverse effects of lead scratch, corner breakage, bright and dark lines and the like when cleaned after the test is finished, so that the product yield is influenced.
Disclosure of Invention
The invention aims to solve the technical problems that the efficiency is low and the product yield is influenced in a mode of adopting a display screen body to be cut into a large display screen body and then lighting the display screen body one by one in the prior art, so that a display screen and a display device are provided.
To this end, one of the objects of the present invention is to provide a display screen comprising:
the display screen comprises a substrate, wherein a cutting line is preset on the substrate to divide the substrate into a first part positioned inside the cutting line and a second part surrounding the periphery of the first part, and a display screen body is formed in the first part;
the electrode lead comprises an anode lead and a cathode lead, is led out from the display screen body and extends to the outer side of the display screen body;
an electrode auxiliary lead including an anode auxiliary lead and a cathode auxiliary lead disposed on the substrate;
the anode auxiliary lead is suitable for being connected with an anode lead of the display screen body, and the cathode auxiliary lead is suitable for being connected with a cathode lead of the display screen body.
Preferably, the display screen body comprises a display area and a non-display area surrounding the periphery of the display area, the anode lead is led out from one side of the display area to the non-display area and extends to the second part on the substrate to form a first lead extension;
the cathode lead is led out from at least one side of the other sides of the display area, which are not on the same side as the anode lead, towards the non-display area and extends to the second part on the substrate to form a second lead extension part;
the first lead extension is longer than the second lead extension.
Preferably, the display screen further comprises at least one anode conductive coating and at least one cathode conductive coating respectively arranged on the anode auxiliary lead and the cathode auxiliary lead, and the display screen body is respectively connected with the anode and the cathode of an external power supply through the anode conductive coating and the cathode conductive coating.
Preferably, the display screen body is an array display screen body formed by a plurality of rows and a plurality of columns of display screen bodies arranged in an array;
in the array display screen body, the rest of any two adjacent rows of display screen bodies except the display screen body in the bottom row, the first lead extension part and the second lead extension part corresponding to the display screen body in the upper row are both arranged in the non-display area of the display screen body corresponding to the lower row and are not connected with the electrode lead of the display screen body corresponding to the row.
Preferably, in the display screen, in the array display screen body, the anode auxiliary lead and the cathode auxiliary lead corresponding to all display screen bodies in the bottom row are formed on the second portion of the periphery of the row of display screen bodies, the anode auxiliary lead and the cathode auxiliary lead corresponding to the display screen bodies in the remaining rows at least partially extend to the second portion of the periphery of the array display screen body to form auxiliary lead extension portions, and the anode conductive coating and the cathode conductive coating are respectively disposed on the respective corresponding auxiliary lead extension portions.
Preferably, the anode auxiliary lead and the cathode auxiliary lead are etched and formed in the array display screen body and on the second portion outside the array display screen body by adopting a photoetching process.
Preferably, the cathode leads of all the display screen bodies of the array display screen body are connected together through a cathode auxiliary lead, and the anode leads of all the display screen bodies are connected together through an anode auxiliary lead;
all the display screen bodies can be connected with the positive electrode and the negative electrode of an external power supply in a conducting way through the anode conducting coating and the cathode conducting coating to be integrally lightened.
Preferably, the display screen body of the display screen array comprises at least two rows of display screen bodies, and at least two anode conductive coatings and at least two cathode conductive coatings are respectively arranged on the anode conductive coatings and the cathode conductive coatings;
the anode leads of all the display screen bodies in any row are connected together through the anode auxiliary lead; the cathode leads of all the display screen bodies in any row are connected together through the cathode auxiliary lead;
the anode auxiliary leads and the cathode auxiliary leads corresponding to the display screen bodies between the rows are not connected.
Preferably, in any row of the display screen bodies, the electrode leads of part of the adjacent display screen bodies are connected together through the first electrode auxiliary lead, the electrode leads of the other display screen bodies in the row are connected through the second electrode auxiliary lead, and the first electrode auxiliary lead is not connected with the second electrode auxiliary lead;
and the first electrode auxiliary leads and the second electrode auxiliary leads corresponding to the adjacent rows are not connected.
Another object of the present invention is to provide a display device including the display screen of any one of the above.
The technical scheme of the invention has the following advantages:
1. the invention provides a display screen, comprising: the display screen comprises a substrate, wherein a cutting line is preset on the substrate to divide the substrate into a first part positioned inside the cutting line and a second part surrounding the periphery of the first part, and a display screen body is formed in the first part;
the electrode lead comprises an anode lead and a cathode lead, is led out from any display screen body and extends to the outer side of the display screen body;
an electrode auxiliary lead including an anode auxiliary lead and a cathode auxiliary lead disposed on the substrate;
the anode auxiliary lead is suitable for being connected with an anode lead of the display screen body, and the cathode auxiliary lead is suitable for being connected with a cathode lead of the display screen body.
In the display screen body of the technical scheme, the cathode lead and the anode lead of the display screen body are respectively led out of the outer side of the display screen body, and the cathode lead and the anode lead of the display screen body are respectively connected through the cathode auxiliary lead and the anode auxiliary lead, when the lighting reliability is tested, the lighting test can be carried out on the whole or part of the display screen bodies simultaneously, the test efficiency is high, the purpose of testing the reliability by lighting one by one after cutting each display screen body is not needed, the human resources are greatly saved, meanwhile, the electrode lead is led out of the outer side of the display screen body, the appearance of the display screen body and the design of an original electrode lead are not influenced when the display screen body is cut and separated, the conductive adhesive tape can be prevented from being arranged on the electrode lead when the electrode lead is cut and tested, and the damage of the electrode lead, which influences the product performance and yield, can be caused when the conductive adhesive tape is cleaned after the test is finished.
2. In any display screen body, the anode lead extends to the non-display area of the display screen body longitudinally adjacent to the anode lead to form a first lead extension part, the cathode lead extends to the non-display area of the display screen body longitudinally adjacent to the cathode lead to form a second lead extension part, and the length of the first lead extension part is longer than that of the second lead extension part, so that the phenomenon of intersecting short circuit cannot occur when the anode auxiliary lead and the cathode auxiliary lead are arranged.
3. According to the display screen provided by the invention, the anode auxiliary lead extends to the second part to form the first auxiliary lead extension part, the cathode auxiliary lead extends to the second part to form the second auxiliary lead extension part, and the electrode lead extends to the outer side of the display screen body through the electrode auxiliary lead, so that the condition that the product yield is possibly influenced by cleaning after the test by arranging the conductive adhesive tape on the electrode lead inside the display screen body in the prior art can be avoided.
4. According to the display screen provided by the invention, the electrode lead is led out of the outer side of the display screen body through the electrode auxiliary lead, the conductive coating is arranged on the electrode auxiliary lead, namely the conductive coating is arranged outside, so that the problems that the test effect is influenced by the dirt of the conductive coating on the electrode lead during the prior test of cutting and then lighting, the product yield is possibly influenced by cleaning after the test is finished can be avoided, and the screen body appearance and the original electrode lead design are not influenced when the display screen body is cut and separated.
5. According to the display screen provided by the invention, the anode auxiliary lead wires connect the anode lead wires of all the display screen bodies together, and the cathode auxiliary lead wires connect the cathode lead wires of all the display screen bodies together, so that the reliability of the integral lighting test of the array display screen bodies is realized, and the test efficiency is high.
6. According to the display screen provided by the invention, the anode auxiliary leads respectively connect the anode leads of all the display screen bodies in a single row, and the cathode auxiliary leads connect the cathode leads of all the display screen bodies in a single row, so that the reliability of the single-row whole-row lighting test of the display screen bodies is realized.
7. According to the display screen provided by the invention, in any row of display screen bodies, the anode auxiliary lead connects the anode leads of part of the display screen bodies together, and the cathode auxiliary lead connects the cathode leads of the corresponding part of the display screen bodies together, so that the reliability of the lighting test of the part of the display screen bodies in a single row can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a conventional display screen structure using a cut display screen lighting test;
FIG. 2 is a schematic structural diagram of the electrode auxiliary leads on the display panel of the present invention connecting the electrode leads of all the display panels together;
FIG. 3 is a schematic structural diagram of the present invention in which the electrode leads of all the display panels in a single row are connected together and the electrode leads of the display panels in adjacent rows are not connected;
FIG. 4 is a schematic structural diagram of the electrode leads of the display panels adjacent to the single row portion of the display panel of the present invention being connected together and disconnected from the electrode leads of the other display panels of the row and the electrode leads of the display panels between the rows also being disconnected.
Description of reference numerals:
10-a substrate; 11-a first part; 12-a second part;
20-a display screen body; 21-a display area; 22-non-display area;
30-an anode lead; 31-a first lead extension;
40-a cathode lead; 41-a second lead extension;
50-anode auxiliary lead; 50 a-first anode auxiliary lead A; 50B-a second anode auxiliary lead B; 50C-first anode auxiliary lead C; 50D-second anode auxiliary lead D; 50E-first anode auxiliary lead E; 50F-second anode auxiliary lead F; 51-a first auxiliary lead extension; 51 a-first auxiliary lead extension a; 51C-first auxiliary lead extension C; 51D-first auxiliary lead extension D; 51E — first auxiliary lead extension E; 51F — first auxiliary lead extension F;
60-cathode auxiliary lead; 60 a-first cathode auxiliary lead A; 60B-second cathode auxiliary lead B; 60D-second cathode auxiliary lead D; 60E-first cathode auxiliary lead E; 60F — second cathode auxiliary lead F; 61-a second auxiliary lead extension; 61 a-second auxiliary lead extension a; 61C-second auxiliary lead extension C; 61D-second auxiliary lead extension D; 61E — second auxiliary lead extension E; 61F — second auxiliary lead extension F;
70-anodic conductive coating;
80-a cathode conductive coating;
90-cutting line.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
A display screen of this embodiment, as shown in fig. 2 to 4, includes a substrate 10 with a square structure, a square cutting line 90 is disposed on the substrate 10 to divide the substrate 10 into a square first portion 11 and a second portion 12 surrounding the periphery of the first portion 11, a plurality of criss-cross cutting lines 90 are preset on the first portion 11 to divide the first portion 11 into a plurality of rows and columns of display screen bodies 20 arranged in an array, the plurality of display screen bodies 20 arranged in an array form an array display screen body, and each display screen body 20 has a display area 21 and a non-display area 22 surrounding the periphery of the display area 21; electrode leads including an anode lead 30 and a cathode lead 40, the anode lead 30 being connected to an anode layer (not shown) and drawn from one side of the anode layer toward the non-display region 22 and extending to the outside of the non-display region 22 of the display panel body 20; the cathode lead 40 is connected with the cathode layer (not shown) and connected with the cathode layer, and is led out from two opposite sides of the cathode layer and extends to the outside of the non-display area 22 of the display screen body 20; and the electrode auxiliary lead comprises an anode auxiliary lead 50 and a cathode auxiliary lead 60, wherein the anode auxiliary lead 50 is suitable for being connected with the anode lead 30 of the display screen body 20, and the cathode auxiliary lead 60 is suitable for being connected with the cathode lead 40 of the display screen body 20.
According to the technical scheme, the cathode lead 40 and the anode lead 30 of the display screen body 20 are respectively led out of the display screen body 20, the cathode lead 40 and the anode lead 30 of the display screen body 20 are respectively connected through the cathode auxiliary lead 60 and the anode auxiliary lead 50, when the lighting reliability is tested, the whole or part of the display screen body can be simultaneously tested in a lighting mode, the testing efficiency is high, the purpose of testing the reliability after each display screen body 20 is cut and then is lightened one by one is not needed, manpower resources are greatly saved, meanwhile, the electrode lead is led out of the outer side of the display screen body 20, and the appearance of the display screen body and the design of an original electrode lead are not influenced when the display screen body 20 is cut and separated.
The substrate 10 may be a hard substrate or a flexible substrate, and the material may be glass or another material such as PET (polyethylene terephthalate). The display screen body 20 comprises a substrate (not shown), and an anode layer (not shown), an organic light emitting material layer (not shown) and a cathode layer (not shown) on the surface of the substrate, wherein the substrate is a part of the substrate 10, each display screen body 20 is divided into a display area 21 at the middle part and a non-display area 22 surrounding the periphery of the display area 21, and the display area 21 is sequentially stacked from bottom to top and provided with the anode layer, the organic light emitting material layer and the cathode layer close to the substrate; the encapsulation layer is hermetically encapsulated over the cathode layer by an adhesive, covering the display area 21 and the non-display area 22, and is not shown in the figure. The packaging layer can be any one of an organic packaging layer, an inorganic packaging layer and a composite packaging layer (including organic and inorganic), the organic material can be polymethyl methacrylate, polyurethane and the like, and the inorganic material can be silicon oxide, silicon nitride, silicon oxynitride and the like.
The number of display screen bodies 20 will not be described or limited in detail. Alternatively, the number of the display panels 20 may be two rows and three columns of the array display panels as shown in fig. 2 to 3, or may be a single display panel as shown in fig. 1, and the cutting line includes only one square cutting line 90 for cutting the display panel from the substrate 10, and there are no plurality of criss-cross cutting lines 90. For convenience of description and distinction, the present invention is illustrated with two rows and three columns as an example. The top row is described as the first row, the bottom row as the second row, the left column as the first column, the middle column as the second column, and the right column as the second column.
The manner in which the cathode lead 40 and the anode lead 30 are formed will not be described or defined in detail. The anode lead 30 is led out from one side (i.e. the lower side as shown in fig. 2) of the anode layer of the display region 21 facing the longitudinally adjacent display screen body 20 and extends to the non-display region 22 of the longitudinally adjacent display screen body 20; optionally, three anode leads 30 are led out from each display screen body 20; the cathode lead 40 is led out from two opposite sides (i.e., left and right sides as shown in fig. 2) of the cathode layer of the display region 21, which are not on the same side as the anode lead 30, to the non-display region 22 and extends into the non-display region 22 of the display panel body 20 adjacent in the longitudinal direction in accordance with the extending direction of the anode lead 30. Optionally, six cathode leads 40 are led out from each display screen body 20, and three cathode leads 40 are arranged on each side. Specifically, taking the display panel 20 in the first row and the first column as an example, the anode lead 30 of the display panel 20 in the first row and the first column is led out from the lower side of the anode layer of the display region 21, extends to the non-display region 22, and extends to the non-display region 22 of the display panel 20 in the second row and the first column to form the first lead extension portion 31; the cathode leads 40 of the display screen bodies 20 in the first row and the first column are respectively led out from the left side and the right side of the cathode layer to the non-display area 22, bent and extended downwards and extended into the non-display area 22 of the display screen bodies 20 in the second row and the first column to form second lead extension parts 41; that is, the anode lead 30 and the cathode lead 40 of the display screen body 20 in the first row and the first column extend through the transverse cutting line 90 between the display screen body 20 in the first row and the display screen body 20 in the first column and the display screen body 20 in the second row and the first column into the non-display area 22 of the display screen body 20 in the first column. It should be noted that the cutting line 90 is formed on the substrate 10 first, and the anode lead 30 and the cathode lead 40 are formed on the substrate 10 later, that is, the cutting line 90 does not affect the connection between the electrode lead inside the display panel body 20 and the electrode lead extension outside the display panel body 20. Wherein the first lead extension 31 and the second lead extension 41 are not connected to the cathode lead 40 and the anode lead 30 of the display screen body 20 in the second row and the second column, and the length of the first lead extension 31 is longer than that of the second lead extension 41, so that the anode auxiliary lead 50 and the cathode auxiliary lead 60 are not crossed and shorted. The lengths of the first and second lead extensions 31 and 41 are not described and defined in detail herein, so long as there is no intersection between the cathode auxiliary lead 60 and the anode auxiliary lead 50. The electrode leads of the other display panels 20 are arranged in the same manner as above, and are not specifically described or limited; and the electrode leads of the display panels 20 are not mutually affected.
Alternatively, the cathode lead 40 of each display screen body 20 is led out from either side of the cathode layer adjacent to the anode lead, which may be either the left side or the right side as shown in fig. 2.
As shown in fig. 2, the anode lead 30 is T-shaped, and includes a first anode auxiliary lead located on the substrate 10 extending from left to right to the second portion 12 in the non-display region 22 of the display screen body 20 in the second row for connecting with the first lead extension 31 of the anode lead 30 of all the display screen bodies 20 in the first row, a portion of the first anode auxiliary lead extending to the second portion 12 forms a first anode auxiliary lead extension and a second anode auxiliary lead located outside the vertical cutting line 90 extending from left to right to the right of the display screen body in the second row on the second portion 12 below the display screen body 20 in the second row and connected with the first lead extension 31 of the anode lead 30 of all the display screen bodies 20 in the second row and vertically parallel to the first anode auxiliary lead, a portion of the second anode auxiliary lead extending to the second portion 12 at the periphery of the display screen body in the array is formed as a second anode auxiliary lead extension (not shown), a first anode auxiliary lead extension (not shown) and a second anode auxiliary lead extension are joined; the cathode auxiliary lead 60 includes a plurality of segments, an inverted cathode auxiliary lead portion (not labeled) is disposed in the non-display region 22 of each display panel 20, the second lead extension portions 41 of the cathode leads 40 on the left and right sides of each display panel 20 are connected to a laterally extending cathode auxiliary lead portion, and the lateral cathode auxiliary lead portions of the laterally adjacent display panels 20 are connected together; the horizontal cathode auxiliary lead portions on the left side of the display screen bodies 20 on the left sides of the upper and lower rows of display screen bodies 20 extend to the left side to the second portion 12 to form a first cathode auxiliary lead extension portion (not shown) and a second cathode auxiliary lead extension portion (not shown), and the first cathode auxiliary lead extension portion and the second cathode auxiliary lead extension portion are connected. That is, for the first anode auxiliary lead of the display screen body 20 of the first row, it is transversely crossed by the longitudinal cutting line 90 between the display screen bodies 20 of the respective columns. It should be noted that the anode auxiliary lead 50 and the cathode auxiliary lead 60 are both formed after the cutting line 90, that is, the cutting line 90 does not affect the route of the anode auxiliary lead 50 and the route of the cathode auxiliary lead 60. It should be noted that the first auxiliary lead extension 31 and the second auxiliary lead extension are respectively used as a collecting line of the anode auxiliary lead 50 and the cathode auxiliary lead 60, and are adapted to respectively collect the anode lead 30 and the cathode lead 40 of the display screen body 20 of the array display screen body, the conductive coating is disposed on the collecting line, and the anode layer and the cathode layer of the display screen body 20 are respectively connected with the anode and the cathode of the external power supply through the conductive coating. As an alternative embodiment, the anode auxiliary lead 50 and the cathode auxiliary lead 60 are all disposed in the non-display region 22, that is, the collective line of the anode auxiliary lead 50 and the collective line of the cathode auxiliary lead 60 are both disposed in the non-display region 22, and the conductive coating is also disposed in the non-display region 22 of the array display screen body, which also can implement a whole lighting test or a partial lighting test by connecting all the display screen bodies 20 or a part of the display screen bodies 20 of the array display screen body, but this way still needs to be cleaned after the test is completed, but because the electrode auxiliary lead is used, the cleaning after the cutting does not affect the original electrode lead design.
For the anode auxiliary lead 50 and the cathode auxiliary lead 60, the circuit lines formed on the non-display area 22 of the display panel body 20 and the second portion 12 of the substrate 10 outside the cutting line 90 are etched by using a photolithography process, which will not be described and limited in detail. When the display screen body 20 needs to be cut, the first lead extension 31 and the second lead extension 41 are disconnected from the electrode lead of the display screen body 20 where the first lead extension and the second lead extension are located, so that the original electrode lead design of the display screen body 20 is not affected.
In order to realize the lighting of the display screen body 20, the first auxiliary lead extension 51 and the second auxiliary lead extension 61 are respectively provided with an anode conductive coating 70 and a cathode conductive coating 80, and both the anode conductive coating 70 and the cathode conductive coating 80 are arranged on the second portion 12 of the substrate 10, namely, on the periphery of the array display screen body; more specifically, as shown in fig. 2, the anode conductive coating 70 is disposed at the junction of the first anode auxiliary lead extension and the second anode auxiliary lead extension, the cathode conductive coating 80 is disposed at the junction of the first cathode auxiliary lead extension and the second cathode auxiliary lead extension, and the array display screen body can be respectively connected and conducted with the positive electrode and the negative electrode of an external power supply (not shown) through the anode conductive coating 70 and the cathode conductive coating 80 so as to perform the reliability of the overall lighting test. Because the anode conductive coating 70 and the cathode conductive coating 80 are both arranged on the periphery of the array display screen body, secondary cleaning is not needed; when the array display screen body needs to be cut and separated, the appearance of the display screen body 20 and the design of an original electrode lead wire are not affected, the problem that the test effect is affected due to the fact that a conductive coating is arranged on the electrode lead wire when the test is performed after cutting and then lighting is solved, and the problem that the product performance and the yield are affected due to the fact that the original electrode lead wire is scratched due to the fact that the conductive coating is cleaned after the test is completed is solved.
For the conductive coating, one or more selected from conductive silver paste, conductive adhesive, and conductive metal may be used, and the present invention is preferably a conductive adhesive tape, such as conductive silver paste, epoxy neoprene conductive adhesive, and the like. The details are not described or limited, and those skilled in the art can select the design according to the actual needs. The thickness of the conductive coating is not described and defined in detail in the present application, and the skilled person can choose the design according to the actual needs.
It should be noted that, the lines representing the anode auxiliary lead and the cathode auxiliary lead in the drawings are thicker than the lines representing the anode lead and the cathode lead, and do not represent that the anode auxiliary lead and the lead auxiliary lead are thicker than the anode lead and the cathode lead in actual products.
The above-mentioned wiring method of the anode auxiliary lead 50 and the cathode auxiliary lead 60 affects the brightness effect of each display panel 20 due to the voltage difference after the display panel 20 on the substrate 10 is lighted when the power is turned on for the lighting test reliability.
The inventor finds, through experimental research, that the anode auxiliary lead 50 is adopted to connect the anode leads 30 of all the display screen bodies 20 of the array display screen body together, and the cathode auxiliary lead 60 is adopted to connect all the cathode leads 40 together to carry out the wiring mode of the reliability of the integral lighting test, the brightness of the display screen body 20 which is closer to the conductive coating, that is, the outer side of the array display screen body is brighter than the brightness of the display screen body 20 which is far away from the conductive coating, that is, the middle part of the array display screen body is brighter; therefore, in order to reduce the effect of the voltage difference affecting the brightness after the display panel 20 is lighted as much as possible, the inventors further optimize and design the wiring method of the following embodiments 2 and 3 based on the scheme.
Example 2
The difference from embodiment 1 is that the number of the anode conductive coatings 70 and the cathode conductive coatings 80 is different, and the wiring manner of the anode auxiliary lead 50 and the cathode auxiliary lead 60 is also different.
The anode auxiliary lead 50 of the present embodiment connects the anode leads 30 of all the display panels 20 in a single row, the cathode auxiliary lead 60 connects the cathode leads 40 of all the display panels 20 in a single row, and the anode leads 30 and the cathode leads 40 between the display panels 20 in each row are not connected. In the wiring manner, the display screen bodies 20 in each row are respectively connected with one power supply, and the effect of the voltage difference on the brightness is smaller than that in embodiment 1 because the voltage dividing branches are reduced, the influence of the brightness of the display screen bodies 20 is smaller, and the test effect is better than that in comparison.
More specifically, as shown in fig. 3, a first anode auxiliary lead a 50a connected to the anode leads 30 of all the display panels 20 in the first row extends rightward to the second portion 12 of the periphery of the array display panel to form a first auxiliary lead extension a 51a, and a second anode auxiliary lead B50B connected to the anode leads 30 of all the display panels 20 in the second row extends rightward to the second portion 12 of the periphery of the array display panel to form a first auxiliary lead extension B (not shown), and the first auxiliary lead extension a 51a and the second auxiliary lead extension B are not connected to each other, that is, an anode conductive coating 70 is respectively disposed on the right end portions of the first auxiliary lead extension a 51a and the first auxiliary lead extension B; the two rows of display screen bodies 20 are respectively connected with the positive electrodes of different power supplies through the two anode conductive coatings 70; the first cathode auxiliary lead a 60a connected to the cathode lead 40 of the first row of display screen body 20 extends leftward to the second portion 12 to form a second auxiliary lead extension a 61a, and the second cathode auxiliary lead B60B connected to the cathode lead 40 of the second row of display screen body 20 extends leftward to the second portion 12 to form a second auxiliary lead extension B (not shown), which are also not connected to each other, i.e., a cathode conductive coating 80 is respectively disposed on the left end portions of the second auxiliary lead extension a 61a and the second auxiliary lead extension B, and the two rows of display screen bodies 20 are respectively connected to the negative electrodes of different power supplies through the two cathode conductive coatings 80.
Example 3
The difference from embodiment 1 and embodiment 2 is that the number of the anode conductive coatings 70 and the cathode conductive coatings 80 is different, and the wiring manner of the anode auxiliary lead 50 and the cathode auxiliary lead 60 is also different.
Specifically, the anode auxiliary lead 50 is divided into several parts, wherein a part of the anode auxiliary lead 50 connects the anode leads 30 of the display panels 20 adjacent to one row of the display panels 20 together and a part of the anode auxiliary lead 50 connected to the anode lead 30 of the other row of the display panels 20 is not connected to each other, a part of the cathode auxiliary lead 60 connects the cathode leads of the display panels 20 adjacent to one row of the display panels together and a part of the cathode auxiliary lead 60 connected to the cathode lead 40 of the other row of the display panels 20 is not connected to each other, and the anode auxiliary lead 50 and the cathode auxiliary lead 60 are not connected to each other between the rows.
Compared with the wiring method of embodiment 2 in which all the display panel bodies 20 in a single row are connected to one power supply, the wiring method of this method has fewer voltage dividing branches, less influence of voltage difference, and better test effect than those of embodiment 1 and embodiment 2.
More specifically, as shown in fig. 4, the cathode leads 40 of the display panel bodies 20 in the second row and the third column are connected by a first cathode auxiliary lead C (not shown) and the first cathode auxiliary lead C extends to the right to form a second auxiliary lead extension C61C on the second portion 12, the cathode leads 40 of the display panel bodies 20 in the first row and the first column are connected by a second cathode auxiliary lead D60D and the second cathode auxiliary lead D60D extends to the left to form a second auxiliary lead extension D61D on the second portion 12, and the first cathode auxiliary lead C and the second cathode auxiliary lead D60D are not connected; the anode leads 30 of the display screen bodies 20 in the first row, the second column and the first row and the third column are connected through a first anode auxiliary lead C50C, the first anode auxiliary lead C50C extends rightwards to the second portion 12 to form a first auxiliary lead extension C51C, the anode leads 30 of the display screen bodies 20 in the first row and the first column are connected through a second anode auxiliary lead D50D, the second anode auxiliary lead D50D extends leftwards to the second portion 12 to form a first auxiliary lead extension D51D, and the first anode auxiliary lead C50C is not connected with the second anode auxiliary lead D50D; the cathode leads 40 of the display screen bodies 20 in the first row and the second column and the second row and the second column are connected through a second cathode auxiliary lead F60F, the second cathode auxiliary lead F60F extends leftwards to the second portion 12 to form a second auxiliary lead extension F61F, the cathode leads 40 of the display screen bodies 20 in the third row and the third column are connected with a first cathode auxiliary lead E60E, and the first cathode auxiliary lead E60E is connected rightwards to the second portion 12 to form a second auxiliary lead extension E61E; the anode leads 30 of the display screen bodies 20 in the first row and the second column and the second row and the second column are connected together through a second anode auxiliary lead F50F, the second anode auxiliary lead F50F extends leftwards to the second part 12 to form a first auxiliary lead extension F51F, the anode leads 30 of the display screen bodies 20 in the third row and the third column are connected with a first anode auxiliary lead E50E, and the first anode auxiliary lead E50E extends rightwards to the second part 12 to form a first auxiliary lead extension E51E; the first cathode auxiliary lead C is not connected with the first cathode auxiliary lead E60E, and the first cathode auxiliary lead C is not connected with the second cathode auxiliary lead D60D; the first anode auxiliary lead C50C and the first anode auxiliary lead E50E are not connected, and the first anode auxiliary lead C50C and the second anode auxiliary lead D50D are not connected; more specifically, the second auxiliary lead extension C61C and the second auxiliary lead extension D61D are not connected therebetween and the second auxiliary lead extension C61C and the second auxiliary lead extension E61E are not connected; the first auxiliary lead extension C51C and the first auxiliary lead extension D51D are not connected and the first auxiliary lead extension C51C and the first auxiliary lead extension E51E are not connected, that is, an anode conductive coating 70 is respectively provided on the first auxiliary lead extension C51C, the first auxiliary lead extension D51D, the first auxiliary lead extension E51E and the first auxiliary lead extension F51F, a cathode conductive coating 80 is provided on each of the second auxiliary lead extension C61C, the second auxiliary lead extension D61D, the second auxiliary lead extension E61E and the second auxiliary lead extension F61F, so that the lighting test can be performed between the display screen bodies 20 in the first row and the display screen bodies 20 in the second row respectively, and the lighting test can be performed on the display screen bodies 20 in the first row and the display screen bodies 20 in the second row at the same time; and the whole lightening test of the partial display screen body 20 of the line array display screen body is realized. More specifically, in the first row, the portion of the lateral cathode auxiliary lead connected to the cathode lead 40 on the right side of the display screen body 20 in the first row and the first column is disconnected, i.e., not connected, from the portion of the lateral cathode auxiliary lead connected to the cathode lead 40 on the left side of the display screen body 20 in the second row and the second column, and similarly, in the second row, the portion of the lateral cathode auxiliary lead connected to the cathode lead 40 on the right side of the second row and the second column is disconnected, i.e., not connected, from the portion of the lateral cathode auxiliary lead connected to the cathode lead 40 on the left side of the cathode lead 40 in the third column of the. Optionally, the two display screen bodies 20 in the first row, the first column and the second row, and the third column may be connected to the display screen body 20 in the first row and the third column; the three display screen bodies 20 of the second row are connected in a similar manner to the first row. As a variant, it is also possible that the two display panels 20 of the first row, the second column and the third column are connected but not connected to the display panel 20 of the first row, the two display panels 20 of the second row, the second column and the third column are connected but not connected to the display panel 20 of the second row, the first column. As another variation, when the array display screen body has three or more columns, such as four columns, two or three adjacent display screen bodies 20 in any row may be connected, and when two adjacent display screen bodies 20 are correspondingly connected through the first electrode auxiliary lead, there are various situations, for example, when the first column and the second column are connected together, the display screen bodies 20 in the third column and the fourth column may or may not be connected at this time; when the second column and the third column are connected together, the display screen bodies 20 in the first column and the fourth column are correspondingly connected through the second electrode auxiliary lead respectively; when the third and fourth columns are connected together, the two display screen bodies 20 of the first and second columns may or may not be connected together.
Example 4
The display device of this embodiment includes the display panel body of any one of embodiments 1 to 3, such as a mobile phone, a tablet computer, etc. with the display panel body installed thereon, and is formed by integrating and assembling the display panel body with other components. Therefore, the display screen body has all the advantages of the display screen body, all or part of the display screen body 20 on a large display screen body can be firstly lightened integrally or partially to carry out lightening test reliability, one-by-one lightening is not needed, human resources are greatly saved, the test efficiency is high, the mode of cutting after lightening is adopted, when the array display screen body is cut and separated, the auxiliary electrode lead and the first lead extension part 31 and the second lead extension part 41 which are remained in the non-display area 22 of the display screen body 20 cannot influence the performance and yield of a product, the appearance of the screen body and the design of an original electrode lead cannot be influenced, and in addition, because the conductive coating is arranged on the outer side of the array display screen body, secondary cleaning is not needed, and the original electrode lead is prevented from being scratched and the like in the cleaning process of the conductive coating.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A display screen, comprising:
the display screen comprises a substrate (10), wherein a cutting line (90) is preset on the substrate (10) to divide the substrate (10) into a first part (11) located inside the cutting line (90) and a second part (12) surrounding the periphery of the first part (11), and a display screen body (20) is formed in the first part (11);
the electrode lead comprises an anode lead (30) and a cathode lead (40), is led out from the display screen body (20) and extends to the outer side of the display screen body (20);
an electrode auxiliary lead including an anode auxiliary lead (50) and a cathode auxiliary lead (60) disposed on the substrate (10);
the anode auxiliary lead (50) is adapted to be connected with an anode lead (30) of the display screen body (20) and the cathode auxiliary lead (60) is adapted to be connected with a cathode lead (40) of the display screen body (20).
2. The display screen according to claim 1, wherein the display screen body (20) comprises a display area (21) and a non-display area (22) surrounding the display area (21), the anode lead (30) is led out from one side of the display area (21) towards the non-display area (22) and extends to the second part (12) on the substrate (10) to form a first lead extension (31);
the cathode lead (40) is led out from at least one side of the other sides of the display area (21) which are not the same side as the anode lead (30) to the non-display area (22) and extends to the second part (12) on the substrate (10) to form a second lead extension part (41);
the first lead extension (31) is longer than the second lead extension (41).
3. A display screen according to claim 2, further comprising at least one anode conductive coating (70) and at least one cathode conductive coating (80) disposed on the anode auxiliary lead (50) and cathode auxiliary lead (60), respectively, the display screen body (20) being connected to the positive and negative electrodes of an external power source through the anode conductive coating (70) and cathode conductive coating (80), respectively.
4. The display screen according to claim 3, wherein the display screen body (20) is an array display screen body formed by a plurality of rows and columns of display screen bodies (20) arranged in an array;
in the array display screen body, the display screen bodies (20) in any other two adjacent rows except the display screen body (20) in the bottom row, the first lead extension part (31) and the second lead extension part (41) corresponding to the display screen body in the upper row are both arranged in the non-display area (21) of the display screen body (20) corresponding to the lower row and are not connected with the electrode lead of the display screen body (20) corresponding to the row.
5. The display screen of claim 4, wherein the anode auxiliary lead (50) and the cathode auxiliary lead (60) corresponding to all the display screen bodies (20) in the bottom row are formed on the second portion (12) of the periphery of the row of display screen bodies (20), the anode auxiliary lead (50) and the cathode auxiliary lead (60) corresponding to the display screen bodies (20) in the remaining rows at least partially extend to the second portion (12) of the periphery of the array display screen bodies to form auxiliary lead extensions, and the anode conductive coating (70) and the cathode conductive coating (80) are respectively disposed on the respective auxiliary lead extensions.
6. A display screen according to claim 5, characterised in that the anode auxiliary lead (50) and the cathode auxiliary lead (60) are both etched and formed using a photolithographic process.
7. A display screen according to claim 5, characterised in that the cathode leads (40) of all display screen bodies (20) of the array are connected together by a cathode auxiliary lead (60) and the anode leads (30) of all display screen bodies (20) are connected together by an anode auxiliary lead (50);
all the display screen bodies (20) can be integrally lightened through the anode conductive coating (70) and the cathode conductive coating (80) which are in conductive connection with the positive electrode and the negative electrode of an external power supply.
8. The display screen of claim 5, wherein the array of display screen bodies comprises at least two rows of display screen bodies (20), at least two of the anode conductive coatings (70) and the cathode conductive coatings (80) being provided, respectively;
the anode leads (30) of all the display screen bodies (20) of any row are connected together through the anode auxiliary lead (50); the cathode leads (40) of all display screen bodies (20) of any row are connected together through the cathode auxiliary lead (60);
the anode auxiliary leads (50) and the cathode auxiliary leads (60) corresponding to the display screen bodies (20) between the rows are not connected with each other.
9. A display screen according to claim 5, characterised in that in any row of display screen bodies (20), the electrode leads of some adjacent display screen bodies (20) are connected together by a first electrode auxiliary lead, the electrode leads of the other display screen bodies (20) in the row are connected by a second electrode auxiliary lead and the first electrode auxiliary lead and the second electrode auxiliary lead are not connected;
and the first electrode auxiliary leads and the second electrode auxiliary leads corresponding to the adjacent rows are not connected.
10. A display device characterized by comprising the display screen of any one of claims 1 to 9.
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