CN110827693A - Flexible and foldable display panel and flexible display terminal - Google Patents
Flexible and foldable display panel and flexible display terminal Download PDFInfo
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- CN110827693A CN110827693A CN201911191712.5A CN201911191712A CN110827693A CN 110827693 A CN110827693 A CN 110827693A CN 201911191712 A CN201911191712 A CN 201911191712A CN 110827693 A CN110827693 A CN 110827693A
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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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Abstract
The embodiment of the invention provides a flexible foldable display panel and a flexible display terminal, and solves the technical problem that the display of the flexible display panel in the prior art is poor after the flexible display panel is bent for multiple times. The invention provides a flexible foldable display panel which comprises a flexible display module and a support plate arranged on one side of a non-display surface of the flexible display module, wherein the projection of a bending region of the flexible display module on the support plate covers the bending region of the support plate, the bending region of the support plate comprises hollow patterns, the edge lines of the hollow patterns are smooth curves, and when the flexible foldable display panel is folded, the smooth curves of the edges of the hollow patterns cannot crush the flexible display module, so that the probability that the flexible display module is crushed by the hollow patterns is reduced, and the probability of poor display of the foldable flexible display panel after being folded for many times is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible foldable display panel and a flexible display terminal.
Background
With the development of display technology, the application field of display devices is now very wide, and thus the requirements for various performances of panels are gradually increased. The flexible screen has characteristics such as can buckle, utilizes display device's flexibility, and people can buckle or fold display device to it is convenient to carry and use display device for people.
At present, the flexible display screen has become an important development direction of the display screen of the electronic device due to the advantages of being bendable, foldable and portable; the flexible display screen can be a complete display screen or a display screen formed by splicing a plurality of small screens, and has the characteristic of being foldable. However, although the foldable flexible display panel in the prior art can be folded, after the foldable flexible display panel is bent for multiple times, the display panel has a phenomenon of poor display, so that the display screen cannot normally display.
Disclosure of Invention
In view of this, embodiments of the present invention provide a flexible and foldable display panel and a flexible display terminal, which solve the technical problem in the prior art that a poor display is easily generated after a foldable flexible display panel is bent for multiple times.
For the purpose of making the objects, technical means and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. 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.
According to an aspect of the present invention, an embodiment of the present invention provides a flexible and foldable display panel, the display panel including a display panel bending region for bending the display panel, the flexible and foldable display panel including: a flexible display module; the supporting plate is arranged on one side of the non-display surface of the flexible display module and comprises a supporting plate bending area, and in the thickness direction of the flexible display module, the projection of the flexible display module bending area on the supporting plate covers the supporting plate bending area; the support plate bending area comprises hollow patterns, the hollow patterns comprise edge lines, and the edge lines are first smooth curves.
In an embodiment of the invention, the first smooth curve is a first arc line.
In an embodiment of the present invention, a gap is provided between at least one set of two adjacent edge lines.
In an embodiment of the present invention, the hollow pattern further includes: at least one first line parallel to a fold of the flexible foldable display panel; and a first connecting line connecting two adjacent first straight lines.
In an embodiment of the invention, the first connecting line is a second smooth curve.
In an embodiment of the present invention, the vertical distances between any two adjacent first straight lines are equal.
In an embodiment of the invention, the second smooth curve is a second arc line.
In an embodiment of the present invention, the radii of the second arcs connecting any two adjacent first arcs are equal.
In an embodiment of the present invention, the supporting plate is a steel plate.
As a second aspect of the present invention, an embodiment of the present invention further provides a flexible display terminal, including the flexible foldable display panel as described above.
The flexible foldable display panel provided by the embodiment of the invention comprises a flexible display module and a support plate arranged on one side of the non-display surface of the flexible display module, wherein the support plate comprises a support plate bending area; the support plate bending area comprises hollow patterns, and edge lines of the hollow patterns are first smooth curves. The bending area of the supporting plate arranged on one side of the non-display surface of the flexible display module is set to be the hollow pattern, the edge line of the hollow pattern is a smooth curve, when the flexible foldable display panel is folded, the smooth curve of the edge of the hollow pattern cannot crush the flexible display module, and therefore the probability of poor display of the display panel is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a flexible and foldable display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a support plate in a flexible and foldable display panel according to another embodiment of the present invention;
fig. 3 is a schematic structural view illustrating a part of the hollow pattern in the bending region of the supporting plate according to another embodiment of the invention.
Detailed Description
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.
Furthermore, 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.
As described in the background art, the foldable flexible display panel in the prior art has poor display after being bent for a plurality of times, and the inventors have found that the reason for this problem is that, in order to improve the bending smoothness and the performance recovery of the flexible display module, a supporting plate is usually disposed on the non-display surface side of the flexible display module, in order to make the bending region of the support plate have good bending performance, the bending region of the support plate is usually patterned (i.e. the bending region of the support plate includes a hollow pattern), when the foldable flexible display panel is bent, the edges of the hollow patterns in the bending area of the support plate are sharp, the probability that the flexible display module is crushed by the sharp edge lines of the hollow patterns is increased, after buckling many times, the flexible display module is easy to display badly through pressing many times.
Based on the above, the invention provides the flexible foldable display panel, the bending area of the support plate arranged on one side of the non-display surface of the flexible display module is set to be the hollowed-out pattern, the edge line of the hollowed-out pattern is a smooth curve, when the flexible foldable display panel is folded, the smooth curve of the edge of the hollowed-out pattern cannot crush the flexible module, so that the probability that the flexible display module is crushed by the hollowed-out pattern is reduced, and the probability of poor display of the foldable flexible display panel after being folded for multiple times is reduced.
Specifically, the present invention provides a flexible foldable display panel, including a display panel bending region, where the display panel bending region is used to bend the display panel, and the flexible foldable display panel includes: a flexible display module; the supporting plate is arranged on one side of the non-display surface of the flexible display module and comprises a supporting plate bending area, and in the thickness direction of the flexible display module, the projection of the flexible display module bending area on the supporting plate covers the supporting plate bending area; the support plate bending area comprises hollow patterns, and edge lines of the hollow patterns are first smooth curves.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a flexible and foldable display panel according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a support plate according to an embodiment of the present invention, and fig. 3 is a schematic structural diagram of a part of a hollow pattern in a bending region of the support plate according to an embodiment of the present invention. With reference to fig. 1 to fig. 3, a flexible and foldable display panel provided in an embodiment of the present invention includes a display panel bending region, where the display panel bending region is used to bend the display panel, and the flexible and foldable display panel includes: the flexible display module comprises a flexible display module 1, wherein the flexible display module 1 comprises a flexible display module bending area 11; the flexible display module comprises a support plate 2 arranged on one side of a non-display surface of the flexible display module 1, wherein the support plate 2 comprises a support plate bending region 21 and a non-bending region 20, the support plate bending regions 21 correspond to the flexible display module bending regions 11 one by one, namely in the thickness direction of the flexible display module, the projection of the flexible display module bending regions 11 on the support plate 2 covers the support plate bending regions 21 of the support plate 2; the support plate bending region 21 includes a hollow pattern 22, the hollow pattern 22 includes an edge line 221, and the edge line 221 is a first smooth curve. According to the flexible foldable display panel provided by the embodiment of the invention, the bending area of the supporting plate arranged on one side of the non-display surface of the flexible display module is set to be the hollowed-out pattern, and the edge line of the hollowed-out pattern is a smooth curve, so that when the flexible foldable display panel is folded, the smooth curve of the edge of the hollowed-out pattern cannot crush the flexible display module, the probability that the flexible display module is crushed by the hollowed-out pattern is reduced, and the probability that the foldable flexible display panel is badly displayed after being folded for multiple times is reduced.
For the whole flexible display module, in an embodiment of the present invention, the flexible display module includes a flexible substrate, a light emitting device layer disposed on one side of the flexible substrate, and a cover plate layer disposed on one side of the light emitting device layer away from the substrate.
In an embodiment of the invention, the flexible display module further includes a touch layer disposed between the light emitting device layer and the cover plate layer, so that the display module has a touch characteristic.
In an embodiment of the invention, the flexible display module further includes an optical transparent adhesive layer (OCA layer for short) disposed between the light emitting device layer and the touch layer. The optical transparent adhesive has the characteristics of colorless transparency, light transmittance of more than 90 percent, good bonding strength, capability of being cured at room temperature or middle temperature, small curing shrinkage and the like. Through setting up adjacent two-layer overburden of optics adhesive tape bonding, can realize the firm bonding between adjacent two-layer rete under the circumstances that does not influence flexible display module's display effect. And, through set up optics transparent adhesive tape layer between flexible display module assembly and touch-control layer, when the light emitting device layer receives external force and assaults, optics transparent adhesive tape also can absorb and release some external force to reduce the impact of external force to the light emitting device layer, further improved flexible display module assembly's shock resistance.
In an embodiment of the invention, the flexible display module further includes an optical transparent adhesive layer disposed between the touch layer and the cover plate layer. Through set up optics transparent adhesive layer between apron layer and touch-control layer, when the apron layer received external force and assaulted, optics transparent adhesive layer also can absorb and release partial external force to reduce the impact of external force to apron layer and display device layer, further improve flexible display module's shock resistance, and then improved collapsible flexible display panel's shock resistance.
It should be understood that whether the optical transparent adhesive layer is disposed between the touch layer and the cover plate layer and between the touch layer and the display device layer may be selected according to an actual application scenario, and the optical transparent adhesive layer may be disposed between the touch layer and the cover plate layer as described above, or disposed between the touch layer and the display device layer, or disposed between the touch layer and the cover plate layer and between the touch layer and the display device layer, and therefore, the embodiment of the present invention does not limit whether the optical transparent adhesive layer is disposed between the touch layer and the cover plate layer and between the touch layer and the display device layer.
In one embodiment of the invention, the supporting plate is a steel plate, the Young modulus of the steel plate is large, the flexible display module can be protected, the bending smoothness of the flexible display module in the process from the unfolded state to the folded state is improved, and the recovery performance of the flexible display module in the process from the folded state to the unfolded state is also improved.
In an embodiment of the present invention, the first smooth curve is a first arc, and the flexible foldable display panel according to the embodiment of the present invention has the support plate bending region 21 including the hollow pattern 22, and the edge line 221 of the hollow pattern 22 is an arc, so that when the hollow pattern is prepared, compared to other smooth curves, a process for preparing an arc is simple, thereby reducing a process difficulty.
In an embodiment of the present invention, a gap is provided between at least one set of two adjacent edge lines 221. That is, the edge portions of the hollow patterns 22 are not continuous (i.e., not closed), and when the flexible foldable display panel is bent, since the gap is provided between the two adjacent edge lines 221, the gap can disperse the stress, so that the bending stress applied to the flexible display module can be reduced, and the probability of poor display of the flexible foldable display panel is further reduced.
In an embodiment of the present invention, a gap is provided between any two adjacent edge lines 221. Make the marginal part of fretwork pattern 22 not continuous (do not seal promptly) more, when flexible collapsible display panel buckles, no matter buckle stress and apply to any position, all have corresponding clearance and can disperse the stress of buckling to further reduce the stress of buckling that flexible display module received, reduce the bad probability of demonstration of flexible collapsible display panel.
Fig. 3 is a schematic structural diagram of a part of the hollow pattern of the bending region of the supporting plate according to an embodiment of the present invention, and as shown in fig. 3, the hollow pattern 22 further includes: at least one first line 222 parallel to the fold of the flexible foldable display panel; and a first connecting line 223 connecting two adjacent first straight lines 222, one end of the first connecting line 223 being connected to one end of one first straight line 222 in two adjacent first straight lines, the other end of the first connecting line 223 being connected to one end of the other first straight line 222 in two adjacent first straight lines. The first straight line in the hollow patterns is parallel to the crease, and when the flexible foldable display panel is bent, the first straight line cannot be folded, so that the flexible display module in the bending area 11 of the flexible display module cannot be crushed, the probability that the flexible display module is crushed by the hollow patterns is further reduced, and the probability that the foldable flexible display panel is badly displayed after being folded for multiple times is reduced.
In a further embodiment of the present invention, the first connection line 223 is a second smooth curve. According to the flexible foldable display panel provided by the embodiment of the invention, the bending area of the supporting plate arranged on one side of the non-display surface of the flexible display module is set to be the hollow pattern, and the first connecting line 223 in the hollow pattern is the second smooth curve, so that when the flexible foldable display panel is folded, the first connecting line with the smooth curve cannot crush the flexible display module, the probability that the flexible display module is crushed by the hollow pattern is further reduced, and the probability of poor display of the foldable flexible display panel after being folded for multiple times is reduced.
In a further embodiment of the present invention, the vertical distance between any two adjacent first straight lines 222 is equal. Because the vertical distances between any two adjacent first straight lines 222 are equal, the process difficulty of preparing the hollow-out pattern is reduced.
In a further embodiment of the present invention, the second smooth curve is a second arc, and when the hollow pattern is prepared, the process for preparing the arc is simple compared to other smooth curves, thereby reducing the process difficulty.
Preferably, the radii of the second arcs connecting any two adjacent first straight lines 222 are equal, so that the difficulty of the process for preparing the hollow-out pattern is further reduced.
On the other hand, the embodiment of the invention further provides a flexible display terminal, which comprises the flexible foldable display panel, and the foldable display panel provided by the embodiment of the invention has the advantages that the bending area of the support plate arranged on one side of the non-display surface of the flexible display module is set to be the hollowed-out pattern, and the edge line of the hollowed-out pattern is a smooth curve, so that when the flexible foldable display panel is folded, the smooth curve of the edge of the hollowed-out pattern cannot crush the flexible display module, the probability that the flexible display module is crushed by the hollowed-out pattern is reduced, and the probability that the foldable flexible display panel is badly displayed after being folded for many times is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents and the like included in the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A flexible and foldable display panel, the display panel comprising a display panel bending region for bending the display panel, comprising:
a flexible display module;
the supporting plate is arranged on one side of the non-display surface of the flexible display module and comprises a supporting plate bending area, and in the thickness direction of the flexible display module, the projection of the flexible display module bending area on the supporting plate covers the supporting plate bending area;
the support plate bending area comprises hollow patterns, the hollow patterns comprise edge lines, and the edge lines are first smooth curves.
2. The flexible and foldable display panel of claim 1, wherein the first smooth curve is a first arc.
3. The flexible and foldable display panel according to claim 1, wherein a gap is provided between at least one set of two adjacent edge lines.
4. The flexible and foldable display panel of claim 1, wherein the hollow pattern further comprises:
at least one first line parallel to a fold of the flexible foldable display panel; and the number of the first and second groups,
and the first connecting line is used for connecting two adjacent first straight lines.
5. The flexible and foldable display panel of claim 4, wherein the first connection line is a second smooth curve.
6. The flexible and foldable display panel of claim 4, wherein a vertical distance between any two adjacent first lines is equal.
7. The flexible and foldable display panel of claim 4, wherein the second smooth curve is a second arc.
8. The flexible and foldable display panel of claim 7, wherein the radii of the second arcs connecting any two adjacent first lines are all equal.
9. The flexible and foldable display panel of claim 1, wherein the support plate is a steel plate.
10. A flexible display terminal, characterized in comprising a flexible foldable display panel according to any of claims 1-9.
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| CN201911191712.5A CN110827693B (en) | 2019-11-28 | 2019-11-28 | Flexible and foldable display panel and flexible display terminal |
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| WO2022042036A1 (en) * | 2020-08-27 | 2022-03-03 | 京东方科技集团股份有限公司 | Display assembly and display device |
| US20220141968A1 (en) * | 2020-11-04 | 2022-05-05 | Samsung Display Co., Ltd. | Display device |
| US11833806B2 (en) * | 2020-11-04 | 2023-12-05 | Samsung Display Co., Ltd. | Display device |
| CN113362712A (en) * | 2021-06-15 | 2021-09-07 | 武汉华星光电半导体显示技术有限公司 | Flexible display module |
| CN115083262A (en) * | 2021-09-23 | 2022-09-20 | 荣耀终端有限公司 | Backup pad, display screen and electronic equipment |
| CN115083262B (en) * | 2021-09-23 | 2023-04-07 | 荣耀终端有限公司 | Backup pad, display screen and electronic equipment |
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| CN110827693B (en) | 2022-01-25 |
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