CN109166462B - Folding display device and folding method thereof - Google Patents
Folding display device and folding method thereof Download PDFInfo
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- CN109166462B CN109166462B CN201811196803.3A CN201811196803A CN109166462B CN 109166462 B CN109166462 B CN 109166462B CN 201811196803 A CN201811196803 A CN 201811196803A CN 109166462 B CN109166462 B CN 109166462B
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- flexible display
- display screen
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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 invention provides a folding display device, which comprises a flexible display screen and a folding mechanism, wherein the flexible display screen is fixed on the folding mechanism, the folding mechanism is used for driving the flexible display screen to fold or unfold, and the folding mechanism comprises a plurality of supporting parts; when the flexible display screen is in an unfolded state, the plurality of supporting parts are sequentially arranged at intervals along a preset direction; the folding mechanism can be folded or unfolded around the axis of any one of the support portions, the axis of the support portion intersecting with the predetermined direction. The invention also provides a folding method of the folding display device. The invention can fold the flexible display screen into various sizes to meet different requirements of users.
Description
Technical Field
The invention relates to the technical field of display, in particular to a folding display device and a folding method thereof.
Background
With the continuous development of display technology, various display products with different characteristics are produced to meet different use requirements. The foldable display device is a novel flexible display product, and a user can fold the foldable display device according to needs to improve the portability of the display device; the foldable display device can be completely unfolded to obtain a large display screen.
However, the current foldable display device can only be folded in half at the middle of the display screen, and cannot meet the diversified demands of users.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art and provides a folding display device and a folding method thereof.
In order to achieve the above object, the present invention provides a foldable display device, including a flexible display screen and a folding mechanism, wherein the flexible display screen is fixed on the folding mechanism, the folding mechanism is used for driving the flexible display screen to fold or unfold, and the folding mechanism includes a plurality of supporting portions; when the flexible display screen is in an unfolded state, the plurality of supporting parts are sequentially arranged at intervals along a preset direction; the folding mechanism can be folded or unfolded around the axis of any one of the support portions, the axis of the support portion intersecting with the predetermined direction.
Optionally, the support portion includes an electromagnet, the electromagnet has a first end and a second end that are arranged oppositely, and when the folding mechanism is in the unfolded state, the second end of the electromagnet is located on a side of the first end of the electromagnet that is away from the flexible display screen;
the foldable display device further comprises a control mechanism, wherein the control mechanism is used for providing current for each electromagnet, and the magnitude and the direction of the current are adjustable.
Optionally, the support portion further comprises a housing, and the electromagnet is disposed within the housing.
Optionally, the casing is a cylindrical casing with a semicircular bottom surface, the side surface of the casing comprises a curved surface portion connected with the semicircular arc-shaped edge and a plane portion connected with the semicircular straight line edge, and the flexible display screen is fixed on the curved surface portion.
Optionally, the casing is a cylindrical casing, a side surface of the cylindrical casing includes a curved surface portion and a planar portion, and both sides of the curved surface portion are connected with the planar portion through chamfered surfaces; the flexible display screen is fixed on the curved surface part.
Optionally, the flexible display screen is rectangular, and the predetermined direction is a length direction or a width direction of the flexible display screen.
Optionally, when the flexible display screen is in the unfolded state, the dimension of each support portion along the predetermined direction is the same, and the distance between every two adjacent support portions is the same.
Optionally, the flexible display screen is a flexible organic electroluminescent display screen.
Accordingly, the present invention also provides a folding method of the folding display device, comprising:
and controlling the folding mechanism to fold around the axis of the support part at the target folding position according to the target folding position.
Optionally, the flexible display screen includes two portions to be overlapped, and when the flexible display screen is in an unfolded state, the two portions to be overlapped are respectively located at two sides of the target folding position along the predetermined direction; when the flexible display screen is folded around the supporting part, the two parts to be overlapped are arranged in an overlapping mode;
the step of controlling the folding mechanism to fold about the axis of the support at the target folding position in accordance with the target folding position includes:
supplying a current equal to 0 to the electromagnet of the support at the target folding position;
and providing a current larger than 0 for the electromagnets of the supporting parts corresponding to the two parts to be overlapped, and adjusting the current direction to ensure that the magnetic poles of the second ends of the electromagnets corresponding to the two parts to be overlapped are opposite.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view illustrating a foldable display device according to an embodiment of the present invention in an unfolded state;
FIG. 2 is a sectional view taken along line AA in FIG. 1;
FIGS. 3a to 3c are schematic views of the folding mechanism being folded about the axes of different supports, respectively;
FIG. 4 is a cross-sectional view of the support;
FIG. 5a is a schematic view of a first structure of the housing;
FIG. 5b is a second structural view of the housing;
fig. 6 is a flowchart of a folding method of a foldable display device according to a second embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a schematic view of a foldable display device according to an embodiment of the present invention in an unfolded state, and fig. 2 is a cross-sectional view taken along line AA in fig. 1. As shown in fig. 1 and 2, the foldable display device includes a folding mechanism 10 and a flexible display screen 20. The flexible display screen 20 is fixed on the folding mechanism 10, and the folding mechanism 10 is used for driving the flexible display screen 20 to fold or unfold. The folding mechanism 10 includes a plurality of independent supporting portions 11, and when the flexible display panel 20 is in the unfolded state (i.e., when the whole display surface of the flexible display panel 20 is a plane), the plurality of supporting portions 11 are sequentially arranged at intervals along a predetermined direction; the folding mechanism 10 can be folded or unfolded about the axis of any one of the support portions 11, the axis of the support portion 11 intersecting with the predetermined direction.
The axis of the support portion 11 may be specifically an axis passing through the center of the support portion 11 and parallel to the extending direction of the support portion 11. Alternatively, the support portions 11 extend perpendicularly to the predetermined direction so that the axis of the support portions 11 is perpendicular to the arrangement direction of the support portions 11.
Fig. 3a to 3c are schematic views of the folding mechanism when folded around the axis of different supports, respectively. As shown in fig. 3a to 3c, the folding mechanism 10 can be folded along the axis of any one of the supporting portions 11 to obtain display screens with various sizes, so as to meet different requirements of people. For example, the flexible display 20 has a dimension of 8 inches in the unfolded state, and the folding mechanism 10 folds around the axes of the different support portions 11, so that the flexible display 20 reaches a dimension of 4 inches in fig. 3a, a dimension of 5.5 inches in fig. 3b, and a dimension of 6 inches in fig. 3c, respectively.
Fig. 4 is a sectional view of the support portion, and as shown in fig. 4, the support portion 11 includes a housing 111 and an electromagnet 112 disposed in the housing 111. A plurality of electromagnets 112 may be provided in the housing 111 of the support part 11, the plurality of electromagnets 112 being aligned in the extending direction of the support part 11. The electromagnet 112 has a first end and a second end disposed opposite to each other. When the folding mechanism 10 is in the unfolded state, a first end of the electromagnet 112 faces the flexible display screen 20, and a second end of the electromagnet 112 is located on a side of the first end facing away from the flexible display screen 20. In addition, as shown in fig. 1, the foldable display device further includes a control mechanism 30, and the control mechanism 30 is electrically connected to each electromagnet 112 for providing current to each electromagnet 112, and the current is adjustable in magnitude and direction. The currents received by the different electromagnets 112 do not influence each other. Those skilled in the art will appreciate that the electromagnet 112 includes a coil and a magnetic core, and that the current is provided to the electromagnet 112, i.e., to the coil of the electromagnet 112.
Here, the current supplied to the coil of the electromagnet 112 by the control mechanism 30 may be 0, and in this case, it corresponds to the electromagnet 112 being powered off, and no magnetic field is generated. When the folding mechanism 10 in the unfolded state needs to be folded around a certain support portion (referred to as a target support portion), the target support portion can be powered off, and the magnetic poles of the second ends of the electromagnets 112 on the two sides of the target support portion are opposite by adjusting the current directions of the electromagnets 112 on the two sides of the target support portion, so that the folding mechanism can be automatically bent by the mutual attraction between the opposite magnetic poles; and, by adjusting the magnitude of the current, the attractive force between the electromagnets 112 can be adjusted, thereby adjusting the folding angle, and when the current reaches a certain value, the angle between the portions of the flexible display 20 located at both sides of the target support portion approaches 0 °.
For example, when it is necessary to fold the folding mechanism 10 from the state of fig. 1 to the state of fig. 3a, the supply of the current to the electromagnet 112 of the target support (i.e., the most intermediate support 11) is stopped, and the current larger than 0 is supplied to the electromagnets 112 of the remaining supports 11; and by adjusting the direction of the current, the bottom end of the electromagnet 112 in the left 5 support parts 11 is opposite to the bottom end of the electromagnet 112 in the right 5 support parts 11 (assuming that the winding manner of the coil of each electromagnet 112 is the same, the current supplied to the electromagnet 112 in the left 5 support parts 11 is opposite to the current supplied to the electromagnet 112 in the right 5 support parts 11), so that the left and right parts of the folding mechanism 10 are attracted to each other, and when the current reaches a certain value, the folding mechanism is automatically folded into the state shown in fig. 3 a.
As shown in fig. 3a to 3c, the flexible display 20 includes two portions to be overlapped 21, and when the flexible display 20 is in the unfolded state, the two portions to be overlapped 21 are respectively located at both sides of the target folding position along the predetermined direction; and when the flexible display screen 20 is folded around the supporting portion 11, the two portions to be overlapped 21 are overlapped. It will be appreciated that when the folded position is not in the middle of the flexible display 20 (as is the case in fig. 3b and 3c, for example), the electromagnets 112 in the remaining support portions 11 need not generate electromagnetic fields except for the target support portion and the support portion 11 corresponding to the two portions to be overlapped 21, and the current supplied to the electromagnets 112 of this portion of the support portion 11 can be adjusted to 0. For example, when the foldable display device is adjusted from the unfolded state shown in fig. 1 to the folded state shown in fig. 3b, the two leftmost supporting portions 11 in fig. 1 are not aligned with the other supporting portions 11, and at this time, the current supplied to the electromagnets 112 of the two leftmost supporting portions 11 in fig. 1 may be adjusted to 0.
Preferably, when the folding mechanism 10 is in the flat state, the dimension L of each support portion 11 in the preset direction is the same, and the distance d between every two adjacent support portions 11 is also the same. Thus, when the folding mechanism 10 is folded, the same number of support portions 11 on both sides of the target support portion can be aligned one on another to ensure the stability of the folding. For example, in fig. 3a, the 5 support portions 11 on the left side of the target support portion are aligned one-to-one with the 5 support portions 11 on the right side of the target support portion; in fig. 3b, the 4 support parts 11 on the left side of the target support part are aligned one-to-one with the 4 support parts 11 on the right side of the target support part.
Fig. 5a is a schematic view of a first structure of the housing, and as shown in fig. 1, fig. 2 and fig. 5a, in the first structure of the housing 111, the housing 111 is a cylindrical housing having two parallel bottom surfaces 111c and a side surface connected between the two bottom surfaces 111c, the bottom surface of the housing 111 is semicircular, and the side surface of the housing 111 includes a curved surface portion 111a connected to an arc-shaped side of the semicircle and a flat surface portion 111b connected to a straight side of the semicircle. The flexible display 20 is fixed to the curved surface portion 111a of the cylindrical housing 111. The curvature of the curved surface 111a may be set according to the bending performance of the flexible display 20, so that the flexible display 20 can be attached to the curved surface 111a of the housing 111 after being folded.
Fig. 5b is a schematic view of a second structure of the housing, and as shown in fig. 1, fig. 2 and fig. 5b, in the second structure of the housing 111, the housing 111 is a cylindrical housing with a bottom surface approximately in a semicircle, and has two parallel bottom surfaces 111c and a side surface connected between the two bottom surfaces 111 c. The side surface of the cylindrical shell comprises a curved surface portion 111a and a flat surface portion 111b, and both sides of the curved surface portion 111a are connected with the flat surface portion 111b through chamfered surfaces 111d, that is, the side surface of the cylindrical shell is composed of the curved surface portion 111a, the flat surface portion 111b and two chamfered surfaces 111 d. The flexible display 20 is fixed to the curved surface portion 111 a. Compared with fig. 5a, the chamfered surface 111d provided on the housing 111 in fig. 5b can prevent damage to the other housing 111 due to a sharp corner problem during folding.
In the present invention, the flexible display 20 has a rectangular shape, and the predetermined direction is a length direction or a width direction of the flexible display 20.
In the present invention, the flexible display 20 is preferably a flexible organic electroluminescent (OLED) display, so that a backlight is not required, and the foldable display device can be more easily folded. The foldable display device may be: any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a display, a notebook computer, a navigator and the like.
Fig. 6 is a flowchart of a folding method of a foldable display device according to a second embodiment of the present invention, where the foldable display device is the foldable display device according to the first embodiment. As shown in fig. 6, the folding method includes:
and S1, controlling the folding mechanism to fold around the axis of the support part at the target folding position according to the target folding position.
The target folding position can be determined according to the size of the folded flexible display screen, and can be regarded as a crease line of the flexible display screen to be folded. For example, when the flexible display needs to be folded to half the size of the unfolded state, the target folding positions are: and a dividing line for equally dividing the flexible display screen into two parts along the predetermined direction.
As described above, the flexible display screen includes two portions to be overlapped, and the two portions to be overlapped are two portions of the flexible display screen that satisfy the following conditions: when the flexible display screen is in an unfolded state, the two parts to be overlapped are respectively positioned at two sides of the target folding position along the preset direction; and when the flexible display screen winds the supporting part and is folded, the two parts to be overlapped are overlapped. The support portion includes electromagnets and the control mechanism is adapted to supply current to the coil of each electromagnet. At this time, step S1 includes:
s11, supplying a current equal to 0 to the electromagnet of the support portion at the target folding position.
And S12, supplying current larger than 0 to the electromagnets of the supporting parts corresponding to the two parts to be overlapped, and adjusting the current direction to enable the magnetic poles of the second ends of the electromagnets corresponding to the two parts to be overlapped to be opposite, so that the folding structure is folded by means of the attraction force between the electromagnets corresponding to the two parts to be overlapped, and the two parts to be overlapped are overlapped.
The above is a description of the foldable display device and the folding method thereof, and it can be seen that the foldable display device provided by the present invention can be folded around each support portion, so as to fold the flexible display screen into various sizes, and meet different requirements of users. And, the supporting part includes the electro-magnet, and control mechanism only needs to adjust the electric current direction and the size of providing the electro-magnet, can realize folding mechanism's automatic folding to make the folding of flexible display screen more convenient, and can not damage display device because of manual folding misoperation, provide display device's stability.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (9)
1. A folding display device comprises a flexible display screen and a folding mechanism, wherein the flexible display screen is fixed on the folding mechanism, and the folding mechanism is used for driving the flexible display screen to fold or unfold; when the flexible display screen is in an unfolded state, the plurality of supporting parts are sequentially arranged at intervals along a preset direction; the folding mechanism can be folded or unfolded around the axis of any one support part, and the axis of the support part is crossed with the preset direction;
the supporting part further comprises a shell, the shell is a cylindrical shell, the side surface of the cylindrical shell comprises a curved surface part and a plane part, and two sides of the curved surface part are connected with the plane part through chamfer surfaces; the flexible display screen is fixed on the curved surface part.
2. The foldable display device of claim 1, wherein the support portion comprises an electromagnet having a first end and a second end disposed opposite to each other, and wherein the second end of the electromagnet is located on a side of the first end of the electromagnet facing away from the flexible display screen when the folding mechanism is in the unfolded state;
the foldable display device further comprises a control mechanism, wherein the control mechanism is used for providing current for each electromagnet, and the magnitude and the direction of the current are adjustable.
3. The foldable display device of claim 2, wherein the support further comprises a housing, the electromagnet being disposed within the housing.
4. The foldable display device according to claim 3, wherein the housing is a cylindrical housing having a semicircular bottom surface, the side surface of the housing comprises a curved surface portion connected to the arc-shaped side of the semicircular shape and a flat surface portion connected to the straight side of the semicircular shape, and the flexible display screen is fixed to the curved surface portion.
5. The foldable display device according to claim 1, wherein the flexible display screen is rectangular, and the predetermined direction is a length direction or a width direction of the flexible display screen.
6. The foldable display device of claim 1, wherein each of the support portions has the same dimension along the predetermined direction and the distance between each two adjacent support portions is the same when the flexible display screen is in the unfolded state.
7. The foldable display device of claim 1, wherein the flexible display is a flexible organic electroluminescent display.
8. A folding method of a foldable display device according to any one of claims 1 to 7, comprising:
and controlling the folding mechanism to fold around the axis of the support part at the target folding position according to the target folding position.
9. The folding method according to claim 8, wherein the flexible display screen includes two portions to be overlapped, and when the flexible display screen is in the unfolded state, the two portions to be overlapped are respectively located on both sides of the target folding position in the predetermined direction; when the flexible display screen is folded around the supporting part, the two parts to be overlapped are arranged in an overlapping mode;
the foldable display device of claim 2; the step of controlling the folding mechanism to fold about the axis of the support at the target folding position in accordance with the target folding position includes:
supplying a current equal to 0 to the electromagnet of the support at the target folding position;
and providing a current larger than 0 for the electromagnets of the supporting parts corresponding to the two parts to be overlapped, and adjusting the current direction to ensure that the magnetic poles of the second ends of the electromagnets corresponding to the two parts to be overlapped are opposite.
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| CN201811196803.3A CN109166462B (en) | 2018-10-15 | 2018-10-15 | Folding display device and folding method thereof |
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| CN201811196803.3A CN109166462B (en) | 2018-10-15 | 2018-10-15 | Folding display device and folding method thereof |
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| CN109166462B true CN109166462B (en) | 2021-01-26 |
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| CN109887414B (en) * | 2019-02-01 | 2021-09-14 | 云谷（固安）科技有限公司 | Shapeable flexible display device |
| CN110113456A (en) * | 2019-05-09 | 2019-08-09 | 珠海格力电器股份有限公司 | Electronic device, control method thereof, control device, storage medium, and processor |
| CN110113457A (en) * | 2019-05-09 | 2019-08-09 | 珠海格力电器股份有限公司 | Electronic device, control method thereof, control device, storage medium, and processor |
| US11206741B2 (en) * | 2019-07-16 | 2021-12-21 | Au Optronics Corporation | Display |
| CN110515494B (en) * | 2019-08-29 | 2023-03-28 | Oppo广东移动通信有限公司 | Flexible display screen assembly and electronic device |
| CN110706592B (en) * | 2019-09-10 | 2020-12-08 | 惠州市华星光电技术有限公司 | Flexible display and display method thereof |
| CN113539076B (en) * | 2020-04-20 | 2022-12-13 | Oppo广东移动通信有限公司 | Terminal device and folding display screen thereof |
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