CN110518041B - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN110518041B CN110518041B CN201910809433.4A CN201910809433A CN110518041B CN 110518041 B CN110518041 B CN 110518041B CN 201910809433 A CN201910809433 A CN 201910809433A CN 110518041 B CN110518041 B CN 110518041B
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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
- G09F9/301—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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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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
- H10K59/1201—Manufacture or treatment
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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
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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
- H10K59/17—Passive-matrix OLED displays
- H10K59/179—Interconnections, e.g. wiring lines or terminals
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
Abstract
The invention discloses a display panel, a manufacturing method thereof and a display device, wherein the display panel comprises the following components: a substrate base plate, a plurality of signal lines on the substrate base plate; each signal line is formed by connecting a plurality of line segments at least positioned on two conductive layers in series in the bending area. Through setting up each signal line and establishing ties by many line segments that are located two conducting layers at least in the region of buckling and constitute for in test or the reliability evaluation process of buckling, the stress of buckling that the signal line received can disperse to many line segments that are located two conducting layers at least, avoided stress concentration, thereby reduced the cracked risk of signal line emergence, improved the effect of buckling, promoted product property ability.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a manufacturing method thereof and a display device.
Background
An Organic Light Emitting display panel (OLED) is a third generation display panel following a liquid crystal display panel (LCD). The OLED display panel has the advantages of self-luminescence, wide viewing angle, almost infinite contrast, low power consumption, extremely high reaction speed and the like, has very good market application prospect, and is particularly a flexible OLED product which is a mainstream for future development.
In the existing flexible OLED product, the part of the data line extending to the bending area is designed in a linear type, and in the process of bending test or reliability evaluation, the data line part of the bending area is easy to break, so that the OLED display panel fails.
Disclosure of Invention
In view of this, embodiments of the present invention provide a display panel, a manufacturing method thereof and a display device, so as to improve a bending effect of the display panel.
Therefore, an embodiment of the present invention provides a display panel, including: a substrate base plate on which a plurality of signal lines are located;
each signal line is formed by connecting a plurality of line segments at least positioned on two conductive layers in series in a bending area.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, each of the signal lines is formed by a plurality of first line segments located in one of the conductive layers and a plurality of second line segments located in another one of the conductive layers in the bending region.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, a portion of each signal line in the bending region is formed by alternately connecting the first line segment and the second line segment in series in an extending direction of the signal line.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, each of the first line segments is located in the same conductive layer, and each of the second line segments is located in another conductive layer;
the display panel further includes: and the flat layer is positioned between the two conductive layers and is provided with a through hole for connecting the first line segment and the second line segment.
In a possible implementation manner, in the display panel provided by the embodiment of the present invention, orthographic projections of the first segments of the signal lines in the bending axis direction of the bending region are overlapped with each other, and orthographic projections of the second segments of the signal lines in the bending axis direction of the bending region are overlapped with each other.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, an orthographic projection of the first segment of one signal line in the bending axis direction of the bending region and an orthographic projection of the second segment of an adjacent signal line in the bending axis direction of the bending region are overlapped with each other, and an orthographic projection of the second segment of the signal line in the bending axis direction of the bending region and an orthographic projection of the first segment of the adjacent signal line in the bending axis direction of the bending region are overlapped with each other.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the lengths of the first line segment and the second line segment included in the same signal line are equal.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the display panel further includes: a data line located in the display area;
the signal line is a fan-out routing line of the data line.
Based on the same inventive concept, an embodiment of the present invention provides a method for manufacturing the display panel, including:
providing a substrate base plate;
forming a plurality of line segments at least positioned on the two conductive layers in the bending area of the substrate base plate; wherein, each line segment is connected in series to form a plurality of signal lines.
Based on the same inventive concept, an embodiment of the present invention provides a display device, including: the display panel is provided.
The invention has the following beneficial effects:
the embodiment of the invention provides a display panel, a manufacturing method thereof and a display device, wherein the display panel comprises the following steps: a substrate base plate, a plurality of signal lines on the substrate base plate; each signal line is formed by connecting a plurality of line segments at least positioned on two conductive layers in series in the bending area. Through setting up each signal line and establishing ties by many line segments that are located two conducting layers at least in the region of buckling and constitute for in test or the reliability evaluation process of buckling, the stress of buckling that the signal line received can disperse to many line segments that are located two conducting layers at least, has avoided stress concentration, thereby has reduced the cracked risk of signal line emergence, has improved the effect of buckling, has promoted display panel performance.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a display panel according to an embodiment of the invention;
FIG. 3 is a flowchart illustrating a method for fabricating a display panel according to an embodiment of the present invention;
fig. 4 to 7 are schematic structural diagrams of the display panel shown in fig. 1 manufactured by the manufacturing method shown in fig. 3.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without inventive step, are intended to be within the scope of protection of the disclosure.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "inner", "outer", "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The shapes and sizes of the various layers in the drawings are not intended to reflect the true proportions thereof, but are merely illustrative of the principles of the invention.
As shown in fig. 1 and 2, a display panel according to an embodiment of the present invention includes: a base substrate 101, a plurality of signal lines 102 located on the base substrate 101;
each signal line 102 is formed by connecting a plurality of line segments at least located in two conductive layers in series in the bent region.
In the display panel provided by the embodiment of the invention, the signal lines 102 are formed by connecting a plurality of line segments at least positioned on two conductive layers in series in the bending region, so that the stress borne by the signal lines 102 can be dispersed on the plurality of line segments at least positioned on the two conductive layers in the bending test or reliability evaluation process, and stress concentration is avoided, thereby reducing the risk of breakage of the signal lines 102, improving the bending effect and improving the performance of the display panel.
In the display panel according to the embodiment of the invention, as shown in fig. 1 and 2, each signal line 102 in the bending region is formed by a plurality of first line segments 1021 in one conductive layer and a plurality of second line segments 1022 in another conductive layer, so as to facilitate the light and thin design of the display panel.
In a specific implementation, in order to effectively disperse the bending stress, in the display panel provided in the embodiment of the invention, a portion of each signal line 102 in the bending region is formed by alternately connecting in series a first line segment 1021 and a second line segment 1022 in the extending direction of the signal line.
In specific implementation, to simplify the manufacturing process, in the display panel provided in the embodiment of the present invention, as shown in fig. 1 and fig. 2, each of the first line segments 1021 is located in the same conductive layer, and each of the second line segments 1022 is located in another conductive layer;
the display panel further includes: the flat layer 103 is located between the two conductive layers, so that the first line segment 1021 and the second line segment 1022 included in the same signal line 102 are connected in series through the via hole of the flat layer 103.
In a specific implementation, in order to avoid the concentration of bending stress, in the display panel provided in the embodiment of the present invention, as shown in fig. 1, orthographic projections of the first segments 1021 of the signal lines 102 in the bending axis direction of the bending region are overlapped with each other, and orthographic projections of the second segments 1022 of the signal lines 102 in the bending axis direction of the bending region are overlapped with each other.
In a specific implementation, to avoid the concentration of bending stress, in the display panel according to the embodiment of the invention, as shown in fig. 2, an orthographic projection of a first segment 1021 of one signal line 102 (point filling area in the figure) in the bending axis direction of the bending area coincides with an orthographic projection of a second segment 1022 of an adjacent signal line 102 (area enclosed by thick dashed lines in the figure) in the bending axis direction of the bending area, and an orthographic projection of the second segment 1022 of the signal line 102 (point filling area in the figure) in the bending axis direction of the bending area coincides with an orthographic projection of the first segment 1021 of the adjacent signal line 102 (area enclosed by thick dashed lines in the figure) in the bending axis direction of the bending area.
In order to effectively disperse the bending stress, in the display panel according to the embodiment of the invention, as shown in fig. 1 and fig. 2, the first line segment 1021 and the second line segment 1022 included in the same signal line 102 have the same length. Of course, the lengths of the first line segment 1021 and the second line segment 1022 included in the same signal line 102 may also be unequal, and are not limited herein.
In specific implementation, the bending stress has a large component force in the horizontal direction, so that the data line in the horizontal direction is easy to break, thereby causing the display panel to fail. Based on this, in order to provide the performance of the display panel, in the display panel provided in the embodiment of the present invention, the display panel may further include: a data line located in the display area;
the signal line 102 is a fan-out trace of the data line.
Generally, in the display panel provided in the embodiment of the present invention, as shown in fig. 1 and fig. 2, the display panel further includes: a first planarization layer 104 covering the layer where the second line segment 1022 is located, and a PIF layer located between the substrate 101 and the layer where the first line segment 1021 is located, wherein the PIF layer is a second planarization layer 105 having a planarization effect.
Based on the same inventive concept, embodiments of the present invention provide a manufacturing method of the display panel, and since a principle of the manufacturing method for solving the problem is similar to a principle of the display panel for solving the problem, implementation of the manufacturing method provided by embodiments of the present invention may refer to implementation of the display panel provided by embodiments of the present invention, and repeated details are not repeated.
As shown in fig. 3, the manufacturing method of the display panel provided in the embodiment of the present invention specifically includes:
s301, providing a substrate base plate;
s302, forming a plurality of line segments at least positioned on the two conducting layers in the bending area of the substrate; wherein, each line segment is connected in series to form a plurality of signal lines.
In order to better understand the technical solution of the present invention, the following will explain the manufacturing process of the display panel shown in fig. 1 in detail.
The first step is as follows: providing a substrate base plate 101, and manufacturing a second flat layer 105, namely a PIF layer, on the substrate base plate 101, as shown in FIG. 4; specifically, the material of the substrate 101 may be polyimide.
The second step is that: the first segment 1021 is fabricated by coating, gumming, exposing, developing, etching and stripping processes, as shown in fig. 5.
The third step: the fabrication of the planarization layer 103 with vias is completed by glue spreading, exposure, development, and baking processes, as shown in fig. 6.
The fourth step: the second line segment 1022 is fabricated by coating, pasting, exposing, developing, etching and stripping processes, as shown in fig. 7.
The fifth step: the first planarization layer 104 is fabricated by a process of glue spreading, exposure, development, and baking, as shown in fig. 1.
To this end, the preparation of the display panel shown in fig. 1 is completed.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, including the display panel provided in the embodiment of the present invention, where the display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, an intelligent watch, a fitness wrist strap, and a personal digital assistant. Since the principle of the display device to solve the problem is similar to that of the display panel, the display device can be implemented by referring to the embodiments of the liquid crystal display panel, and the repeated descriptions are omitted.
The display panel, the manufacturing method thereof and the display device provided by the embodiment of the invention comprise the following steps: a substrate base plate, a plurality of signal lines on the substrate base plate; each signal line is formed by connecting a plurality of line segments at least positioned on two conductive layers in series in the bending area. Through setting up each signal line and establishing ties by many line segments that are located two conducting layers at least in the bending area and constitute for in test or the reliability evaluation process of buckling, the stress of buckling that the signal line received can disperse to many line segments that are located two conducting layers at least, avoided stress concentration, thereby reduced the cracked risk of signal line emergence, improved the effect of buckling, promoted display panel performance.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A display panel, comprising: the substrate base plate is positioned on the plurality of signal wires on the substrate base plate;
each signal line is formed by connecting a plurality of line segments at least positioned on two conductive layers in series in a bending area;
each signal line is formed by a plurality of first line segments positioned on one conducting layer and a plurality of second line segments positioned on the other conducting layer in the bending area;
in one signal line, the orthographic projection of the end part of the first line segment on the substrate and the orthographic projection of the end part of the second line segment are mutually overlapped, and the orthographic projection of the middle part of the first line segment on the substrate and the orthographic projection of the middle part of the second line segment are mutually not overlapped;
further comprising: a planar layer located between the two conductive layers, the planar layer having a via connecting the first line segment and the second line segment; the orthographic projection of the middle part of the first line segment on the substrate base plate and the orthographic projection of the middle part of the second line segment are both positioned in the orthographic projection of the flat layer; the planar layer is formed after the first line segment and before the second line segment.
2. The display panel according to claim 1, wherein a portion of each of the signal lines in the bend region is formed by alternately connecting the first line segments and the second line segments in series in an extending direction thereof.
3. The display panel according to claim 2, wherein orthographic projections of the first segments of the respective signal lines in the direction of the bending axis of the bend region coincide with each other, and orthographic projections of the second segments of the respective signal lines in the direction of the bending axis of the bend region coincide with each other.
4. The display panel according to claim 2, wherein an orthographic projection of the first segment of one of the signal lines in the bending axis direction of the bending region and an orthographic projection of the second segment of an adjacent one of the signal lines in the bending axis direction of the bending region coincide with each other, and wherein an orthographic projection of the second segment of the signal line in the bending axis direction of the bending region and an orthographic projection of the first segment of the adjacent one of the signal lines in the bending axis direction of the bending region coincide with each other.
5. The display panel according to claim 2, wherein the first line segment and the second line segment included in the same signal line have the same length.
6. The display panel according to any one of claims 1 to 5, further comprising: a data line located in the display area;
the signal line is a fan-out routing line of the data line.
7. A method of manufacturing a display panel according to any one of claims 1 to 6, comprising:
providing a substrate base plate;
forming a plurality of line segments at least positioned on the two conductive layers in the bending area of the substrate; wherein, each line segment is connected in series to form a plurality of signal lines.
8. A display device, comprising: the display panel of any one of claims 1-6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910809433.4A CN110518041B (en) | 2019-08-29 | 2019-08-29 | Display panel, manufacturing method thereof and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910809433.4A CN110518041B (en) | 2019-08-29 | 2019-08-29 | Display panel, manufacturing method thereof and display device |
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| CN110518041A CN110518041A (en) | 2019-11-29 |
| CN110518041B true CN110518041B (en) | 2022-11-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157233B (en) * | 2014-08-06 | 2017-04-12 | 京东方科技集团股份有限公司 | Flexible display panel |
| KR102631989B1 (en) * | 2016-10-31 | 2024-01-31 | 엘지디스플레이 주식회사 | Organic light emitting display device and method of manufacturing the same |
| US10811488B2 (en) * | 2017-09-22 | 2020-10-20 | Sharp Kabushiki Kaisha | Display device |
| CN107994036B (en) * | 2017-12-14 | 2020-12-04 | 京东方科技集团股份有限公司 | Substrate, preparation method thereof, display panel and display device |
| CN108807477A (en) * | 2018-06-07 | 2018-11-13 | 武汉华星光电半导体显示技术有限公司 | OLED display panel |
| CN108899328A (en) * | 2018-06-30 | 2018-11-27 | 昆山国显光电有限公司 | Interconnecting construction, display base plate and preparation method thereof, display device |
| CN109309111A (en) * | 2018-09-18 | 2019-02-05 | 武汉华星光电半导体显示技术有限公司 | Flexible display panels, flexible display apparatus and flexible display panels preparation method |
| CN109585461B (en) * | 2018-12-29 | 2020-09-22 | 上海天马微电子有限公司 | Display panel and display device |
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