CN108766245B - Flexible display screen and display device - Google Patents
Flexible display screen and display device Download PDFInfo
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- CN108766245B CN108766245B CN201810788343.7A CN201810788343A CN108766245B CN 108766245 B CN108766245 B CN 108766245B CN 201810788343 A CN201810788343 A CN 201810788343A CN 108766245 B CN108766245 B CN 108766245B
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- 239000004020 conductor Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 abstract description 18
- 238000004891 communication Methods 0.000 abstract description 13
- 230000032798 delamination Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 5
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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Abstract
The present application relates to a flexible display screen and a display device. The flexible display screen comprises a display area and a non-display area adjacent to the display area; the non-display area comprises a bending area adjacent to the display area; the flexible display screen includes a plurality of wires, and the wire includes: the first wire segment is positioned in the display area; the second wire segment is positioned in the bending region and close to the display region; the second wire section comprises at least two second sub-wire sections which are mutually connected in parallel; the third wire segment is positioned in the middle of the bending region; the first wire segment, the second wire segment and the third wire segments are sequentially connected in series, and a plurality of third wire segments are positioned on the same layer. When one of the second sub-conductor sections breaks in the bending process of the non-display area, the rest second sub-conductor sections can still ensure the line communication; in addition, the stress can be fully released, and the delamination of the organic film layer is avoided. The display failure in the bending process can be avoided.
Description
Technical Field
The application relates to the technical field of display, in particular to a flexible display screen and a display device.
Background
With the rapid development of the mobile electronic product industry, new products are continuously updated, and the market has higher and higher requirements for mobile display electronic products. For example, products such as mobile phones are moving from bordered to narrow-bordered and borderless. In order to ensure that the occupation ratio of the non-display area is reduced as much as possible on the premise of enough wiring space, the existing design is to bend the non-display area part of the flexible display screen to the back surface of the display area. However, conventional flexible display panels are prone to display failure during bending.
Disclosure of Invention
Based on this, it is necessary to provide a flexible display screen and a display device capable of avoiding display failure in the bending process, aiming at the problem of how to avoid display failure in the bending process.
A flexible display screen comprising a display area, a non-display area contiguous with the display area; the non-display area comprises a bending area adjacent to the display area;
the flexible display screen comprises a plurality of wires, and the wires comprise:
the first wire segment is positioned in the display area;
the second conducting wire segment is positioned in the bending region and close to the display region; the second wire section comprises at least two second sub-wire sections which are mutually connected in parallel;
the third wire segment is positioned in the middle of the bending region;
the first wire segment, the second wire segment and the third wire segment are sequentially connected in series, and a plurality of third wire segments are located on the same layer.
In one embodiment, at least two second sub-conductor segments connected in parallel with each other are located in different layers.
In one embodiment, at least two second sub-conductor segments connected in parallel are twisted.
In one embodiment, the third wire segment includes at least two third sub-wire segments connected in parallel with each other.
In one embodiment, the second wire segment includes at least two first parallel structures connected in series with each other, and the first parallel structure includes at least two second sub-wire segments connected in parallel with each other; and/or
The third wire segment comprises at least two second parallel structures which are connected in series, and the second parallel structures comprise at least two third sub-wire segments which are connected in parallel.
In one embodiment, the conductive wire further comprises a fourth conductive wire segment connected in series with the third conductive wire segment, the fourth conductive wire segment being located at a position within the inflection region away from the display region; the fourth wire segments and the third wire segments are positioned on the same layer.
In one embodiment, the fourth wire segment includes at least two fourth sub-wire segments connected in parallel with each other.
In one embodiment, the fourth wire segment includes at least two third parallel structures connected in series with each other, and the third parallel structures include at least two fourth sub-wire segments connected in parallel with each other.
In one embodiment, the non-display region further includes an extension region adjacent to the inflection region, the extension region being located on the lower side of the display region and parallel to the display region;
preferably, the flexible display screen further comprises a supporting layer, the supporting layer is located between the display area and the extension area, and the extension area is attached to one side, away from the display area, of the supporting layer.
In addition, a display device is provided, which comprises the flexible display screen.
When the flexible display screen of the technical scheme is applied, in the bending process of the non-display area, the stress at the initial stage is mainly concentrated at the position close to the display area in the bending area, and as the second wire section comprises at least two second sub-wire sections which are mutually connected in parallel, when one of the second sub-wire sections breaks, the rest second sub-wire sections can still ensure the line communication; and the stress in the later stage of bending is mainly concentrated in the middle position of the bending region, and because a plurality of third wire sections are positioned on the same layer, the stress can be transferred from the third wire sections to the organic film layers on two sides, so that the stress can be fully released, and the layering of the organic film layers is avoided. The display failure in the bending process can be avoided.
By applying the display device of the technical scheme of the application, because the display device comprises the flexible display screen, in the bending process of the non-display area, the stress at the initial stage is mainly concentrated at the position close to the display area in the bending area, and because the second wire section comprises at least two second sub-wire sections which are mutually connected in parallel, when one of the second sub-wire sections breaks, the rest second sub-wire sections can still ensure the line communication; and the stress in the later stage of bending is mainly concentrated in the middle position of the bending region, and because a plurality of third wire sections are positioned on the same layer, the stress can be transferred from the third wire sections to the organic film layers on two sides, so that the stress can be fully released, and the layering of the organic film layers is avoided. The display failure in the bending process can be avoided.
Drawings
FIG. 1 is a schematic view of a flexible display screen before bending according to an embodiment of the present application;
FIG. 2 is a schematic view of a flexible display after bending according to an embodiment of the present application;
FIG. 3 is a schematic diagram of wires within a flexible display screen according to an embodiment of the present application;
fig. 4 is a schematic view of wires in a flexible display screen according to another embodiment of the present application.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
The conventional flexible display screen is easy to cause display failure in the bending process. The inventors of the present application have found through studies that the following two causes exist for the display failure: first, in the bending process of the non-display area, the stress in the initial stage is mainly concentrated at the position, close to the display area, in the bending area, and the lead at the position is easy to break, so that display failure is caused; the second, the later stage stress of buckling mainly concentrates in the intermediate position of buckling district, if the number of piles of a plurality of wire distributions is more, then the number of piles of the organic rete that lies in wire both sides also is more, and relatively speaking, the thickness of every layer of organic rete is less, is unfavorable for fully transmitting buckling stress to the organic rete like this, so lead to the organic rete of wire both sides to peel off and layering easily, and the wire of this position lacks the protection of organic rete this moment, also can fracture to cause the demonstration inefficacy.
Therefore, the application provides a flexible display screen and a display device comprising the flexible display screen, which are used for avoiding display failure in the bending process.
Referring to fig. 1 and 2, a flexible display screen 100 according to an embodiment of the present application includes a display Area (AA Area) 110 and a non-display Area (non-AA Area) 120 adjacent to the display Area 110. The non-display area 120 includes a inflection region 121 adjacent to the display area 110.
The display region 110 is a region for display, and a light emitting layer or the like is provided in the display region 110. Note that the display area 110 may be displayed in its entirety, or may include a region that is not displayed, such as a frame. It can be understood that the flexible display screen provided by the application is mainly a full-face screen, and can be a common display screen with a frame or a narrow frame. In addition, the display area 110 is a non-bending area, as shown in fig. 2.
The non-display area 120 is located outside the display area 110, and includes circuits such as signal lines and display driver circuits. When flexed, the non-display area 120 visible from the front side may be minimized by bending a portion of the flexible display 100 back along the interface of the display area 110 and the non-display area 120, resulting in a flexed flexible display 100, as shown in fig. 2.
The inflection region 121 is entirely located within the non-display region 120. The inflection region 121 includes a region a near the display region 110, a middle region B, and a region C far from the display region 110. The area a is a starting section of the bending, and the width is about one quarter of the width of the whole bending area 121. The middle region B is located at a middle position of the inflection region 121, and has a width about one-half of the width of the entire inflection region 121. Region C is the posterior segment of the bend and has a width approximately one-quarter of the width of the entire bend region 121.
Referring to fig. 3, the flexible display 100 of an embodiment includes a plurality of wires 130 for transmitting signals. The wire 130 includes a first wire segment (not shown), a second wire segment 140, and a third wire segment 150.
Wherein the first conductive line segment is located in the display area 110. Specifically, the first conductive line segment is used to transmit the signal in the display area 110 to the non-display area 120, and the form and arrangement of the first conductive line segment in the display area 110 are not limited. For example, the first wire segment may comprise at least one parallel structure, wherein the parallel structure comprises at least two first sub-wire segments connected in parallel to each other. When the flexible display screen 100 is bent, the first wire segment may be subjected to stress generated by bending, so as to cause breakage, and if a certain first sub-wire segment in the parallel structure is broken, the remaining first sub-wire segments can still ensure line communication, thereby avoiding display failure. Of course, the first wire segment may also be in a strip shape, i.e. not include any parallel structure.
The second conductive line segment 140 is located in the bending region 121 near the display region 110, i.e. in the region a. The second conductor segment 140 comprises at least two second sub-conductor segments 141 connected in parallel with each other. When one of the second sub-conductor segments 141 breaks, the remaining second sub-conductor segments 141 are still able to ensure line connectivity.
The third wire segment 150 is located in the middle position of the bending region 121, i.e. in the middle region B. The first wire segment, the second wire segment 140 and the third wire segment 150 are sequentially connected in series, and the plurality of third wire segments 150 are located on the same layer. Because the third wire segments 150 are located on the same layer, stress can be transferred from the third wire segments 150 to the organic film layers on two sides, so that the stress can be fully released, layering of the organic film layers is avoided, and display failure can be avoided. In addition, the process of making the plurality of third wire segments 150 into the same layer is simpler, and the cost can be saved.
Based on the foregoing embodiment, at least two second sub-conductor segments 141 connected in parallel with each other are located at different layers. The different layers herein refer to layering in a direction extending from the display surface of the flexible display 100 to the back surface. The stresses to which different positions in the same longitudinal direction (extending from the display surface of the flexible display screen 100 to the back surface) are subjected during bending are different, and since at least two second sub-wire segments 141 connected in parallel are located in different layers, when the second sub-wire segment 141 in a certain position breaks, the second sub-wire segments 141 located in other positions in the same longitudinal direction can still ensure line communication, so that guarantee is provided in the longitudinal direction, and display failure is avoided.
The second conductor segment 140 of the present embodiment includes six second sub-conductor segments 141 connected in parallel with each other. The six second sub-conductor segments 141 are divided into three groups, and the three groups are respectively located in three layers, as shown in fig. 1. Each group comprises two second sub-conductor segments 141 lying in the same plane (parallel to the display surface), as shown in fig. 3. Therefore, line communication can be ensured in the longitudinal direction and the transverse direction, and display failure can be effectively avoided.
Of course, the number of layers of the second sub-wire segment 141 is not limited thereto, and may be two, four or more.
Based on the foregoing embodiment, at least two second sub-conductor segments 141 connected in parallel with each other are twisted, as shown in fig. 3. The second sub-wire segment 141 with a twist shape has a certain elasticity, and when the flexible display 100 is bent, the second sub-wire segment 141 with a twist shape has a buffer space, which reduces the probability of breaking under stress and is more beneficial to avoiding display failure.
Of course, the shape of the second sub-wire segment 141 is not limited thereto, and may be other shapes, such as an S-shape or a bar shape.
In addition, the number of the second sub-conductive segments 141 in the different conductive lines 130 may be the same or different.
Based on the foregoing embodiment, the third wire segment 150 includes at least two third sub-wire segments 152 connected in parallel with each other. At least two third sub-conductor segments 152 connected in parallel with each other are located on the same layer. When one of the third sub-conductor segments 152 is broken due to stress during bending, the remaining third sub-conductor segments 152 can still ensure line communication, which is beneficial to avoiding display failure.
Based on the foregoing embodiment, the second wire segment 140 includes at least two first parallel structures (not shown) connected in series, and the first parallel structures include at least two second sub-wire segments (not shown) connected in parallel; and/or the third wire segment 150 comprises at least two second parallel structures 151 connected in series with each other, the second parallel structures 151 comprising at least two third sub-wire segments 152 connected in parallel with each other.
In one embodiment, the second wire segment 140 includes at least two first parallel structures (not shown) connected in series, and the first parallel structures include at least two second sub-wire segments (not shown) connected in parallel. Even if a certain second sub-conductor segment in different first parallel structures is broken, the rest second sub-conductor segments in the rest first parallel structures can still ensure line communication, and display failure is avoided.
In one embodiment, the third wire segment 150 includes at least two second parallel structures 151 connected in series with each other, and the second parallel structure 151 includes at least two third sub-wire segments 152 connected in parallel with each other, as shown in fig. 3. Even if any third sub-wire segment 152 in a different second parallel structure 151 breaks, the remaining third sub-wire segments 152 in the remaining second parallel structure 151 can still ensure line communication, which is beneficial to avoiding display failure.
In one embodiment, the second wire segment 140 includes at least two first parallel structures (not shown) connected in series, and the first parallel structures include at least two second sub-wire segments (not shown) connected in parallel; and the third wire segment 150 comprises at least two second parallel structures 151 connected in series with each other, the second parallel structures 151 comprising at least two third sub-wire segments 152 connected in parallel with each other. This embodiment combines the advantages of both embodiments and effectively avoids display failure.
On the basis of the foregoing embodiment, referring to fig. 3, the conductive wire 130 further includes a fourth conductive wire segment 160, the fourth conductive wire segment 160 is connected in series with the third conductive wire segment 150, and the fourth conductive wire segment 160 is located in a position away from the display area 110 in the bending area 121, that is, in the area C; the fourth wire segments 160 and the third wire segments 150 are located at the same layer.
Because the fourth wire segments 160 and the third wire segments 150 are located on the same layer, stress at the position during bending can be transferred from the fourth wire segments 160 to the organic film layers on two sides, so that the stress can be fully released, layering of the organic film layers is avoided, and display failure can be avoided. In addition, the process of making the fourth wire segments 160 and the third wire segments 150 on the same layer is simpler, so that the cost can be saved.
It should be noted that the positions of the plurality of fourth wire segments 160 are not limited thereto. In other embodiments, several fourth wire segments 160 may also be located at different layers.
On the basis of the previous embodiment, the fourth conductor segment 160 comprises at least two fourth sub-conductor segments 162 connected in parallel to each other. When one of the fourth sub-conductor segments 162 is broken due to stress during bending, the remaining fourth sub-conductor segments 162 can still ensure line communication, which is beneficial to avoiding display failure.
On the basis of the previous embodiment, the fourth wire section 160 comprises at least two third parallel structures 161 connected in series with each other, the third parallel structures 161 comprising at least two fourth sub-wire sections 162 connected in parallel with each other. Even if any one of the fourth sub-wire segments 162 in the different third parallel structures 161 is broken, the remaining fourth sub-wire segments 162 in the remaining third parallel structures 161 can still ensure line communication, which is beneficial to avoiding display failure.
On the basis of the foregoing embodiment, the non-display region 120 further includes an extension region 122 adjacent to the inflection region 121, and the extension region 122 is located at the lower side of the display region 110 and parallel to the display region 110, as shown in fig. 2. Wherein a chip may be disposed in the extension region 122.
Preferably, the flexible display 100 further includes a supporting layer 170, the supporting layer 170 is located between the display area 110 and the extension area 122, and the extension area 122 is attached to a side of the supporting layer 170 away from the display area 110. The supporting layer 170 is used for fixedly supporting the flexible display screen 100, so as to avoid the bending region 121 of the flexible display screen 100 from being broken due to excessive bending degree.
In addition, in the flexible display screen of the present application, the form of the third wire section and the fourth wire section is not limited thereto, and the third wire section and the fourth wire section may have other shapes, respectively.
Referring to fig. 4, in another embodiment of the flexible display screen 200, the third conductive line segment 250 and the fourth conductive line segment 260 are each in a strip shape. The process of forming the third wire segment 250 and the fourth wire segment 260 into the strip shape is simple, which is advantageous in saving cost.
Of course, in other embodiments, the third wire segment and the fourth wire segment may have other shapes such as S-shape, and may have different shapes.
When the flexible display screen of the technical scheme is applied, in the bending process of the non-display area, the stress at the initial stage is mainly concentrated at the position close to the display area in the bending area, and as the second wire section comprises at least two second sub-wire sections which are mutually connected in parallel, when one of the second sub-wire sections breaks, the rest second sub-wire sections can still ensure the line communication; and the stress in the later stage of bending is mainly concentrated in the middle position of the bending region, and because a plurality of third wire sections are positioned on the same layer, the stress can be transferred from the third wire sections to the organic film layers on two sides, so that the stress can be fully released, and the layering of the organic film layers is avoided. The display failure in the bending process can be avoided.
The display device of an embodiment of the application comprises the flexible display screen.
By applying the display device of the technical scheme of the application, because the display device comprises the flexible display screen, in the bending process of the non-display area, the stress at the initial stage is mainly concentrated at the position close to the display area in the bending area, and because the second wire section comprises at least two second sub-wire sections which are mutually connected in parallel, when one of the second sub-wire sections breaks, the rest second sub-wire sections can still ensure the line communication; and the stress in the later stage of bending is mainly concentrated in the middle position of the bending region, and because a plurality of third wire sections are positioned on the same layer, the stress can be transferred from the third wire sections to the organic film layers on two sides, so that the stress can be fully released, and the layering of the organic film layers is avoided. The display failure in the bending process can be avoided.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (9)
1. A flexible display screen, wherein the flexible display screen comprises a display area and a non-display area adjacent to the display area; the non-display area comprises a bending area adjacent to the display area;
the flexible display screen comprises a plurality of wires, and the wires comprise:
the first wire segment is positioned in the display area;
the second conducting wire segment is positioned in the bending region and close to the display region; the second wire section comprises at least two second sub-wire sections which are mutually connected in parallel;
the third wire segment is positioned in the middle of the bending region;
the non-display area further comprises an extension area adjacent to the bending area, and the extension area is positioned on the lower side of the display area and parallel to the display area;
the first wire segment, the second wire segment and the third wire segment are sequentially connected in series, and a plurality of third wire segments are positioned on the same layer;
at least two second sub-conductor segments connected in parallel are positioned on different layers.
2. A flexible display screen according to claim 1, wherein at least two second sub-conductor segments connected in parallel are twist-shaped.
3. A flexible display screen according to claim 1, wherein the third wire segment comprises at least two third sub-wire segments connected in parallel with each other.
4. The flexible display screen of claim 1, wherein the second wire segment comprises at least two first parallel structures connected in series with each other, the first parallel structure comprising at least two second sub-wire segments connected in parallel with each other; and/or
The third wire segment comprises at least two second parallel structures which are connected in series, and the second parallel structures comprise at least two third sub-wire segments which are connected in parallel.
5. The flexible display screen of claim 1, wherein the wire further comprises a fourth wire segment in series with the third wire segment, the fourth wire segment being located within the bend region at a location remote from the display region; the fourth wire segments and the third wire segments are positioned on the same layer.
6. A flexible display screen according to claim 5, wherein the fourth wire segment comprises at least two fourth sub-wire segments connected in parallel with each other.
7. A flexible display screen according to claim 6, wherein the fourth wire segment comprises at least two third parallel structures connected in series with each other, the third parallel structures comprising at least two fourth sub-wire segments connected in parallel with each other.
8. The flexible display screen of claim 1, further comprising a support layer between the display region and the extension region, the extension region being attached to a side of the support layer remote from the display region.
9. A display device comprising a flexible display screen as claimed in any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810788343.7A CN108766245B (en) | 2018-07-18 | 2018-07-18 | Flexible display screen and display device |
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| CN201810788343.7A CN108766245B (en) | 2018-07-18 | 2018-07-18 | Flexible display screen and display device |
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| CN108766245B true CN108766245B (en) | 2023-10-20 |
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| CN109712536A (en) * | 2019-02-28 | 2019-05-03 | 武汉华星光电半导体显示技术有限公司 | A kind of display panel and display device |
| CN109389906B (en) * | 2018-11-26 | 2020-05-12 | 云谷（固安）科技有限公司 | Flexible display panel and display device |
| CN109767692B (en) * | 2019-01-09 | 2022-03-08 | 昆山国显光电有限公司 | Display panel |
| CN109817097A (en) * | 2019-01-31 | 2019-05-28 | 武汉华星光电半导体显示技术有限公司 | Flexible display panels |
| CN111681553B (en) * | 2020-06-30 | 2022-02-25 | 云谷（固安）科技有限公司 | Display panel and display device |
| TWI743927B (en) * | 2020-08-05 | 2021-10-21 | 友達光電股份有限公司 | Display panel |
| CN115394212B (en) * | 2022-08-29 | 2023-07-25 | 武汉华星光电半导体显示技术有限公司 | Display panel and spliced display screen |
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Application publication date: 20181106 Assignee: YUNGU (GU'AN) TECHNOLOGY Co.,Ltd.|BAZHOU YUNGU ELECTRONIC TECHNOLOGY Co.,Ltd.|KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER Co.,Ltd. Assignor: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS Co.,Ltd. Contract record no.: X2019990000156 Denomination of invention: Flexible display screen and display device License type: Common License Record date: 20191030 |
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