CN110335860B - Display panel and method for manufacturing display panel - Google Patents
Display panel and method for manufacturing display panel Download PDFInfo
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- CN110335860B CN110335860B CN201910341131.9A CN201910341131A CN110335860B CN 110335860 B CN110335860 B CN 110335860B CN 201910341131 A CN201910341131 A CN 201910341131A CN 110335860 B CN110335860 B CN 110335860B
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- connecting terminal
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/30—Structural arrangements specially adapted for testing or measuring during manufacture or treatment, or specially adapted for reliability measurements
- H01L22/34—Circuits for electrically characterising or monitoring manufacturing processes, e. g. whole test die, wafers filled with test structures, on-board-devices incorporated on each die, process control monitors or pad structures thereof, devices in scribe line
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
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- H—ELECTRICITY
- 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
- H10K59/131—Interconnections, e.g. wiring lines or terminals
Abstract
The application discloses display panel and display panel's manufacturing method, wherein, display panel includes: a substrate; a connection terminal disposed on the substrate; the test circuit is arranged on the substrate, positioned between the connecting terminal and the edge of the substrate and connected to the connecting terminal; wherein the test line has a cutting interval at least in a partial region. The display panel has good waterproof oxygen performance.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a display panel and a method for manufacturing the display panel.
Background
In the manufacturing process of the display panel, the display effect of the display panel needs to be tested, for example, a full-contact test method can be adopted, a pixel driving signal is input to the substrate through a test chip, and each pixel is tested. In performing a test, the connection terminals on the substrate are connected to the test chip by the detection lines.
After the test is finished, detection lines are still remained on the substrate, the detection lines are corroded when being contacted with moisture and oxygen in the air, and the moisture and the oxygen are more likely to influence the connecting terminals through the corroded detection lines, so that the corrosion of the connecting terminals is caused, and the display is influenced.
Disclosure of Invention
The application provides a display panel and a manufacturing method of the display panel, which aim to solve the problem that in the prior art, a connecting terminal of the display panel is easily affected by water and oxygen to cause poor display.
In order to solve the above technical problem, the present application provides a display panel, including: a substrate; a connection terminal disposed on the substrate; the test circuit is arranged on the substrate, positioned between the connecting terminal and the edge of the substrate and connected to the connecting terminal; wherein the test line has a cutting interval at least in a partial region.
Wherein, the display panel includes: and the packaging cover plate is in packaging connection with the substrate through sealing glue, and the connecting terminal and the test circuit are positioned between the packaging cover plate and the substrate.
The substrate comprises a top surface, a bottom surface and a side surface, wherein the top surface and the bottom surface are oppositely arranged, and the side surface is connected with the top surface and the bottom surface; the connecting terminal and the test circuit are arranged on one side of the top surface or one side of the bottom surface; the sealant extends from the side surface to the top surface or the bottom surface, and further covers the test circuit, the space between the test circuit and the connecting terminal, or the connecting terminal.
Wherein the sealing glue comprises taffeta glue or ultraviolet light curing glue.
Wherein the width of the cutting interval in the extending direction of the test circuit is consistent.
In order to solve the above technical problem, the present application provides a method for manufacturing a display panel, including: obtaining a substrate, wherein a connecting terminal and a test circuit which are mutually connected are arranged on the substrate, and the test circuit is positioned between the connecting terminal and the edge of the substrate; the test line is cut such that the test line has a cutting interval at least in a partial region.
The substrate comprises a top surface, a bottom surface and a side surface, wherein the top surface and the bottom surface are oppositely arranged, and the side surface is connected with the top surface and the bottom surface; the connecting terminal and the test circuit are arranged on one side of the top surface or one side of the bottom surface; the step of cutting the test circuit comprises the following steps: aligning the package cover plate with the substrate package, so that the connecting terminal and the test circuit are positioned between the package cover plate and the substrate; and coating the sealant from the side surface to connect the package cover plate and the substrate in a package manner.
Wherein, coating the side with the sealant includes: a predetermined amount of sealant is applied from the side surface such that the sealant extends from the side surface to the top surface or the bottom surface to cover the test wiring, between the test wiring and the connection terminal, or the connection terminal.
Wherein obtaining a substrate comprises: and cutting the screen body by utilizing laser to obtain a substrate, wherein the substrate is provided with a connecting terminal and a test circuit left after cutting the screen body.
Wherein, cut test circuit, include: cutting the test circuit by using laser; the laser cutting machine used for cutting the screen body is the same as that used for cutting the test circuit.
The utility model provides a display panel includes the base plate, set up connecting terminal and test line on the base plate, test line connects in connecting terminal, be used for inputing external signal and testing to connecting terminal, and be located between connecting terminal and the base plate edge, wherein test line has the severance interval at the subregion at least, the severance interval has blocked test line and connecting terminal's being connected, block water oxygen to a certain extent and enter into connecting terminal by test line, alleviate connecting terminal's corruption, promote display panel's display effect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 2 is another schematic diagram of the display panel of FIG. 1;
FIG. 3 is a schematic structural diagram of another embodiment of a display panel according to the present application;
FIG. 4 is a schematic diagram of another structure of the embodiment of the display panel shown in FIG. 3;
FIG. 5 is a schematic diagram illustrating an extended position of the sealant in the embodiment of the display panel shown in FIG. 3;
FIG. 6 is a schematic flow chart illustrating a method of manufacturing a display panel according to an embodiment of the present disclosure;
FIG. 7 is a schematic flow chart illustrating a method for manufacturing a display panel according to another embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. 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 application.
In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indicators in the embodiments of the present application (such as upper, lower, left, right, front, rear, top, bottom … …) are only used to explain the relative positional relationship between the components, the movement, etc. in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure, where the display panel 100 of the present embodiment may be an OLED display panel, a Micro-LED display panel, or the like. Which includes a substrate 11, connection terminals 12, and test lines 13.
The connection terminal 12 and the test circuit 13 are both arranged on the substrate 11 and are connected with each other, and the test circuit 13 is used for inputting an external signal to the connection terminal 12 for testing; the test wiring 13 is located between the connection terminal 12 and the edge of the substrate 11, and the test wiring 13 contacts the water oxygen permeated from the edge of the substrate 11 prior to the connection terminal 12; the test wiring 13 thus has a cut-off interval at least in a partial region, thereby blocking the test wiring 13 and the connection terminal 12 and alleviating the influence of corrosion of the test wiring 13 on the connection terminal 12.
Specifically, in this embodiment, the substrate 11 corresponds to the shape of the display panel, and may be a square, a circle, or other shapes, or may be a flexible substrate to be applied to manufacture a flexible display panel, and the selected material may be a silicon material such as quartz. The substrate 11 may be a TFT array substrate, which is defined with a display region 111 and a terminal region 112.
The display area 111 has data lines, driving lines, and the like for display. The terminal area 112 is provided with a connection terminal 12 and a test line 13, the connection terminal 12 is connected to the driving line in the display area 111 and is used for connecting a driving chip of the display panel, and the driving chip can transmit a driving signal to the driving line in the display area 111 through the connection terminal 12 to drive the display. The test circuit 13 is used for inputting an external signal to the connection terminal 12 for testing in a test process of the manufacturing process. The test line 13 and the connection terminal 12 may be in a one-to-one or one-to-many relationship, that is, one test line 13 is used to test the driving lines to which the plurality of connection terminals 12 are connected.
The test line 13 in this embodiment has a cutting interval at least in a partial region, for example, the whole test line 13 may be cut to form an interval, as shown in fig. 1; as shown in fig. 2, fig. 2 is another schematic structural view of the embodiment of the display panel shown in fig. 1, and generally, the test lines 13 in the region where water and oxygen easily enter are cut to form the space, so that the test lines 13 in the region are cut to form the space.
In this embodiment, after the test line 13 is cut, if the test line 13 near the edge of the substrate 11 is corroded by water and oxygen, the connection terminal 12 is not easily and directly affected by the gap, so the water and oxygen resistance of the display panel 100 is better, and the display effect is better.
The application also provides a display panel, and the structure of the display panel can further improve the water and oxygen resistance. Referring to fig. 3, fig. 3 is a schematic structural diagram of another embodiment of a display panel according to the present application. The display panel 200 of the present embodiment includes a substrate 21, a connection terminal 22, and a test wiring 23.
The connection terminal 22 and the test circuit 23 are both disposed on the substrate 21 and connected to each other, and the test circuit 23 is used for inputting an external signal to the connection terminal 22 for testing; the test wiring 23 is located between the connection terminal 22 and the edge of the substrate 21, and the test wiring 23 contacts the water oxygen permeated from the edge of the substrate 21 prior to the connection terminal 22; the test wiring 23 thus has a cut-off interval at least in a partial region, thereby blocking the test wiring 23 and the connection terminal 22 and alleviating the influence of corrosion of the test wiring 23 on the connection terminal 22.
Specifically, in this embodiment, the substrate 11 corresponds to the shape of the display panel, and may be a square, a circle, or other shapes, or may be a flexible substrate to be applied to manufacture a flexible display panel, and the selected material may be a silicon material such as quartz. Which is defined with a display area 214 and a terminal area 215. The display area 214 is provided with driving lines for implementing display, such as data lines and driving lines, the terminal area 215 is provided with a connection terminal 22 and a test line 23, the connection terminal 22 is connected to the driving lines in the display area 214 and is used for connecting a driving chip of the display panel, and the driving chip can transmit driving signals to the driving lines in the display area 214 through the connection terminal 22 to drive display. The test line 23 is used for inputting an external signal to the connection terminal 22 for testing in a test process of the manufacturing process.
The test wiring 23 in the present embodiment has a cutting interval at least in a partial region, and for example, the entire test wiring 23 may be cut to form an interval, or only the test wiring 23 in a region where water and oxygen easily enter the substrate may be cut to form an interval. The test line 23 with the cutting interval is specifically cut by laser, that is, a plurality of test lines are cut simultaneously, so that the cutting efficiency is ensured, and the width d of the cutting interval of each test line in the extension direction of the test line 23 is consistent.
After the test line 23 is cut, if the test line 23 near the edge of the substrate 21 is corroded by water and oxygen, the connection terminal 22 is not easily affected by the test line 23 due to the existence of the gap, so the water and oxygen resistance of the display panel 200 is better, and the display effect is better.
Further, the substrate 21 of the display panel 200 of the present embodiment includes a top surface 211 and a bottom surface 212 oppositely disposed, and a side surface 213 connecting the top surface 211 and the bottom surface 212. The connection terminals 22 and the test wiring 23 may be provided on the top surface side or the bottom surface side, in the present embodiment, on the top surface 211.
The display panel 200 further includes a package cover 25, and the package cover 25 is connected to the substrate 21 by a sealant 24. The sealant 24 is coated from the side surface 213 to prevent water and oxygen from entering the display panel 200, and the sealant 24 coated on the side surface can further prevent water and oxygen from corroding the connection terminals 22 on the substrate 21. The molding compound 24 further covers the end of the connection terminal 22 exposed at the side surface 213. The sealing compound 24 may be taffy glue or ultraviolet light curing glue.
In the present embodiment, the sealant 24 may extend from the side surface 213 to the top surface 211, please refer to fig. 4, and fig. 4 is another structural diagram of the display panel embodiment shown in fig. 3. Then, all or part of the test circuit 23 is covered, part or all of the space between the test circuit 23 and the connection terminal 22 is covered, and part or all of the connection terminal 22 is covered, for example, as shown in fig. 5, fig. 5 is a schematic diagram of an extended position of the sealant in the embodiment of the display panel shown in fig. 3. The sealant 24 extending to the top surface 211 can further prevent water and oxygen from entering, and prevent the connection terminal 22 from water and oxygen erosion.
Fig. 3-5 illustrate embodiments that include a sealant 24 to indicate the position of the sealant 24, fig. 3-5 illustrate side views of the display panel, and fig. 1-2 illustrate top views of the display panel.
The application also provides a manufacturing method of the display panel. Referring to fig. 6, fig. 6 is a schematic flow chart illustrating a manufacturing method of a display panel according to an embodiment of the present disclosure. The manufacturing method of the present embodiment includes the following steps.
S101: the method comprises the steps of obtaining a substrate, wherein a connecting terminal and a test circuit which are connected with each other are arranged on the substrate, and the test circuit is located between the connecting terminal and the edge of the substrate.
S102: the test line is cut such that the test line has a cutting interval at least in a partial region.
The display panel manufactured by the manufacturing method of the present embodiment corresponds to the display panel 100 of the above embodiment, and has good water and oxygen resistance and display effect, which are not described in detail. When the test circuit is cut, the test circuit can be cut at 1/3 and 1/2, the specific cutting position is not limited in the application, the test circuit is cut at 1/2 in the embodiment, and the test circuit is shorter, so that the test circuit is cut at 1/2 to be more convenient to align.
Referring to fig. 7, the method for manufacturing the display panel 200 according to the above embodiment is shown, and fig. 7 is a schematic flow chart of another embodiment of the method for manufacturing the display panel according to the present application. The manufacturing method of the present embodiment includes the following steps.
S201: and cutting the screen body by using laser to obtain the substrate.
Generally, after the test is completed, the substrate having the test area is subjected to a panel cutting process to obtain a substrate corresponding to the size of the display panel, and during the panel cutting process, the test terminals and a part of the test lines in the test area are removed, so that a part of the test lines remains on the substrate obtained after the panel cutting process. The test area on the substrate can be set larger than the terminal area, so that the test terminal interval of the test area can be set larger, thereby improving the test accuracy.
The laser cutting is to irradiate the cutting position with focused high-power-density laser beam to melt, vaporize or reach the burning point of the irradiated position, and blow off the molten material by means of high-speed airflow coaxial with the laser beam, so as to cut the cutting position.
S202: and cutting the test line by using laser.
After the screen body is cut in step S201, the test lines left on the substrate are continuously cut. The whole test circuit can be cut, and the test circuit in the area where the substrate is easy to enter water and oxygen can also be cut.
This step also utilizes a laser to cut. Further, the laser cutting machine used in step S202 is the same as that used in step S201, that is, in actual production, the two steps can be completed by one process, and after the laser cutting machine completes the cutting of the screen body, the parameters of the laser cutting machine are changed, and then the cutting of the test line on the substrate after the cutting is continued. Only the test circuit needs to be cut at this time, and the substrate does not need to be cut, so that the laser power is relatively small at this time.
S203: and aligning the package cover plate with the substrate package, and coating the side surface of the substrate with the sealant.
The substrate comprises a top surface, a bottom surface and a side surface, wherein the top surface and the bottom surface are oppositely arranged, and the side surface is connected with the top surface and the bottom surface; the connecting terminal and the test circuit are arranged on one side of the top surface or on one side of the bottom surface.
After the laser line is cut, the substrate is packaged, the packaging cover plate and the substrate are aligned, and the connecting terminal and the testing line are located between the packaging cover plate and the substrate.
And then coating sealing glue on the side surface of the substrate to realize the packaging connection between the packaging cover plate and the substrate. The sealant can prevent water and oxygen from corroding the connection terminal on the substrate. In this embodiment, a predetermined amount of sealant is applied so that the sealant extends from the side surface to the top surface or the bottom surface, and the sealant is in a liquid state, and thus can seep or overflow into the top surface or the bottom surface of the substrate, thereby covering part or all of the test circuit, part or all of the space between the test circuit and the connection terminal, or covering part or all of the connection terminal.
The display panel obtained by the manufacturing method of the embodiment has good water and oxygen resistance and display effect.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (7)
1. A display panel, comprising:
the substrate comprises a top surface, a bottom surface and a side surface, wherein the top surface and the bottom surface are oppositely arranged, and the side surface is connected with the top surface and the bottom surface;
a connection terminal disposed on the substrate;
the test circuit is arranged on the substrate, is positioned between the connecting terminal and the edge of the substrate and is connected with the connecting terminal, the test circuit is a test circuit cut and left by the screen body, and the connecting terminal and the test circuit are arranged on one side of the top surface or one side of the bottom surface;
the package cover plate is connected with the substrate in a package mode through sealing glue, and the connecting terminal and the test circuit are located between the package cover plate and the substrate; the sealing compound extends from the side surface to the top surface or the bottom surface so as to cover the test circuit, the space between the test circuit and the connecting terminal or the connecting terminal;
the test circuit is provided with a cutting interval in an end corner area of the substrate, the connecting terminal is connected with the test circuit in a non-end corner area of the substrate, and the cutting interval is used for blocking water and oxygen from entering the connecting terminal from the test circuit.
2. The display panel of claim 1, wherein the sealant comprises taffy glue or uv-curable glue.
3. The display panel according to claim 1, wherein the width of the cutting interval in the extending direction of the test line is uniform.
4. A method of manufacturing a display panel, the method comprising:
the method comprises the steps that a substrate is obtained, wherein a connecting terminal and a test circuit which are connected with each other are arranged on the substrate, the test circuit is located between the connecting terminal and the edge of the substrate, the substrate is obtained through cutting of a screen body, the test circuit is a test circuit left after cutting of the screen body, and the substrate comprises a top surface and a bottom surface which are arranged oppositely and a side surface which is connected with the top surface and the bottom surface; the connecting terminal and the test circuit are arranged on one side of the top surface or one side of the bottom surface;
cutting the test line to enable the test line to have a cutting interval at least in a partial area;
and aligning a packaging cover plate with the substrate in a packaging manner, enabling the connecting terminal and the test circuit to be positioned between the packaging cover plate and the substrate, coating a preset amount of sealant on the side surface, so that the sealant extends from the side surface to the top surface or the bottom surface, further covering the test circuit, the position between the test circuit and the connecting terminal or the connecting terminal, and enabling the packaging cover plate to be connected with the substrate in a packaging manner.
5. The method of claim 4, wherein the applying the encapsulant from the side surface comprises:
applying a predetermined amount of sealant from the side surface such that the sealant extends from the side surface to the top surface or the bottom surface to cover the test wiring, between the test wiring and the connection terminal, or the connection terminal.
6. The method of manufacturing of claim 4, wherein said obtaining a substrate comprises:
and cutting the screen body by using laser to obtain the substrate.
7. The method of manufacturing of claim 6, wherein said cutting the test line comprises:
cutting the test circuit by using laser;
and the laser cutting machine used for cutting the screen body and the test circuit is the same.
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| CN201910341131.9A CN110335860B (en) | 2019-04-25 | 2019-04-25 | Display panel and method for manufacturing display panel |
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| CN201910341131.9A CN110335860B (en) | 2019-04-25 | 2019-04-25 | Display panel and method for manufacturing display panel |
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| CN112086036B (en) * | 2020-09-24 | 2021-08-24 | Tcl华星光电技术有限公司 | Display panel, manufacturing method thereof and display device |
| CN114035385A (en) * | 2021-11-26 | 2022-02-11 | 绵阳惠科光电科技有限公司 | Array substrate, manufacturing method of array substrate and display device |
| CN114035386A (en) * | 2021-11-26 | 2022-02-11 | 绵阳惠科光电科技有限公司 | Array substrate and display device |
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Application publication date: 20191015 Assignee: Bazhou Yungu Electronic Technology Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd.|Kunshan Guoxian photoelectric Co., Ltd Assignor: The valley (Guan) Technology Co. Ltd. Contract record no.: X2019990000155 Denomination of invention: The manufacturing method of display panel and display panel License type: Common License Record date: 20191030 |
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Effective date of registration: 20191211 Address after: No. 2 Xiangshan Avenue, Yongning Street, Zengcheng District, Guangzhou, Guangdong province (the core of Zengcheng economic and Technological Development Zone) Applicant after: Guangzhou Guoxian Technology Co., Ltd Address before: 065500 Hebei Langfang County Guan emerging industry demonstration area Applicant before: The valley (Guan) Technology Co. Ltd. |
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