CN112382201A - Flexible screen folding module and display device - Google Patents
Flexible screen folding module and display device Download PDFInfo
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- CN112382201A CN112382201A CN202011285495.9A CN202011285495A CN112382201A CN 112382201 A CN112382201 A CN 112382201A CN 202011285495 A CN202011285495 A CN 202011285495A CN 112382201 A CN112382201 A CN 112382201A
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- flexible 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 discloses a flexible screen folding module and a display device, wherein the flexible screen folding module comprises: the bending assembly comprises a hinge, a decoration part and a flexible circuit board, wherein the decoration part is provided with a groove, and the hinge and part of the flexible circuit board are accommodated in the groove; the bracket is locked and attached to one side of the bending component; the flexible screen is attached to one side, away from the bending assembly, of the support. According to the invention, the hinge, the bracket and the flexible screen are modularized, the technical problems related to the flexible screen and the hinge are debugged and solved at the module stage, and then the flexible screen and the flexible screen are assembled with a whole machine, so that the development period can be greatly shortened, the development efficiency is improved, and a more convenient and reliable solution is provided for terminal customers.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible screen folding module and a display device.
Background
Because large-screen mobile phones have obvious advantages over small-screen mobile phones in terms of visual and entertainment experiences, foldable mobile phones are becoming the main direction for mobile phone development of mainstream equipment manufacturers as a result of the characteristic that display panels of the foldable mobile phones can flexibly change in size in different use scenes.
At present, there are some problems in the aspect of collapsible flexible screen and complete machine terminal cooperation: first, when the foldable flexible screen is applied to a scene of a foldable mobile phone, due to insufficient stiffness of the flexible material, it may be difficult to assemble with the whole terminal. Secondly, because the flexible screen is driven by the mechanism to move, the stress borne by the flexible screen during bending is closely related to the position of the screen in the hinge, more factors need to be combined and considered by a terminal client for the flexible screen and the hinge, and the analysis is very complex. In addition, because the flexible screen has a dislocation displacement during the folding process, the dislocation space at the two sides of the screen and the middle frame also needs to be considered in an important way. On the other hand, in the development process of the flexible screen of the folding mobile phone, for a terminal client, the screen factory is often only required to provide a screen, when a single screen can pass reliability verification and cannot be tested after being matched with a complete machine, the terminal client can pull the screen factory to analyze the screen, improvement is required, but a hinge and the complete machine cannot be provided due to confidential requirements, so that the screen factory end lacks systematic analysis opportunities, the problem of difficult effective positioning is solved, and development progress is influenced. Therefore, modular development is achieved, a more systematic analysis opportunity is provided for a screen factory, and better development of the flexible screen can be promoted.
If the screen and the hinge are considered in a combined mode and are modularized, the problems related to the screen and the hinge are designed and solved at the module stage and then are assembled with the whole machine, so that the development period can be greatly shortened, the development efficiency is improved, and a more convenient and reliable solution is provided for terminal customers.
In summary, the prior art has the technical problems of insufficient stiffness of the flexible material, overlarge stress applied to the flexible screen in the bending process, low degree of matching between each film layer of the flexible screen and between the flexible screen and the middle frame, too short service life of the flexible screen, overlong development cycle, low development efficiency and the like.
Disclosure of Invention
The embodiment of the invention provides a flexible screen folding module and a display device, which are used for modularizing a hinge, a bracket and a flexible screen, designing and solving the problems related to the screen and the hinge at a module stage, and assembling the flexible screen folding module and the display device with a whole machine, so that the development period can be greatly shortened, the development efficiency can be improved, and a more convenient and reliable solution can be provided for terminal customers.
In order to solve the above problem, in a first aspect, the present invention provides a flexible screen folding module, including:
the bending assembly comprises a hinge, a decoration part and a flexible circuit board, wherein the decoration part is provided with a groove, and the hinge and part of the flexible circuit board are accommodated in the groove;
the bracket is locked and attached to one side of the bending component;
the flexible screen is attached to one side, away from the bending assembly, of the support.
In some embodiments of the invention, the bending assembly includes two sets of the hinges respectively disposed at two ends of the decoration, and the flexible circuit board is disposed between the two sets of the hinges.
In some embodiments of the present invention, the hinge is fastened to the decoration by a screw, and the flexible circuit board is attached to the decoration by a double-sided tape.
In some embodiments of the invention, the flexible screen comprises a bending region, and the bracket is provided with a boss and a groove corresponding to the bending region.
In some embodiments of the invention, the flexible screen further comprises a zip-top adhesive layer, a metal sheet layer and an optical adhesive layer, wherein the zip-top adhesive layer, the metal sheet layer and the optical adhesive layer are sequentially stacked between the bracket and the flexible screen.
In a second aspect, the present invention provides a display device, which includes a middle frame and the flexible screen folding module according to any one of the first aspect.
In some embodiments of the present invention, the middle frame is disposed on a side of the bending assembly away from the stent and covers a side surface of the stent.
In some embodiments of the present invention, a buckle and a screw column are disposed on a side surface of the bracket, the middle frame correspondingly includes a buckle position and a screw hole, the bracket is fixed to the middle frame through the buckle and the screw column, the positions of the buckle position and the buckle position are in one-to-one correspondence, and the positions of the screw column and the screw hole are in one-to-one correspondence.
In some embodiments of the present invention, the battery pack further includes a battery compartment and a system board, the battery compartment is disposed on a side of the bending component away from the bracket, and the system board is disposed between the battery compartment and the bending component.
In some embodiments of the present invention, the support frame is welded with a support rib and a positioning column, and the support frame is fixed with the system board through the support rib and the positioning column.
Compared with the existing flexible screen folding module and the display device, the flexible screen folding module and the display device have the advantages that the hinge, the decorating part and the flexible circuit board are assembled to form the bending assembly, then the bending module, the support and the flexible screen are assembled, the technical problems related to the flexible screen and the hinge are debugged and solved at the module stage, and then the flexible screen folding module and the display device are assembled with the whole machine, so that the development period can be greatly shortened, the development efficiency is improved, and a more convenient and reliable solution is provided for terminal customers.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is an exploded view of a flexible screen folding module in accordance with one embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a bending module according to an embodiment of the present invention;
FIG. 3 is a schematic front view of a flexible screen folding module according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a reverse side of a flexible screen folding module according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a flexible screen folding module according to an embodiment of the present invention;
FIG. 6 is a diagram of a display device according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
In the description of the present invention, it is to be understood that the terms "center", "both ends", "surface", "back", "front", "back", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Based on this, the embodiment of the invention provides a flexible screen folding module and a display device. Each of which is described in detail below.
First, an embodiment of the present invention provides a flexible screen folding module, as shown in fig. 1 and fig. 2, fig. 1 is an exploded view of the flexible screen folding module in an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a bending module in an embodiment of the present invention. The flexible screen folding module 10 includes: the bending assembly comprises a hinge 140, a decoration 130 and a flexible circuit board 150, wherein the decoration 130 is provided with a groove, and the hinge 140 and a part of the flexible circuit board 150 are accommodated in the groove; a bracket 120 locked to one side of the bending assembly; and the flexible screen 110 is attached to one side of the bracket 120 far away from the bending component.
Compared with the conventional flexible screen folding module 10 and display device, the invention modularizes the hinge 140, the bracket 120 and the flexible screen 110, and debugs and solves the technical problems related to the flexible screen 110 and the hinge 140 at the module stage, such as: supporting the flexible screen 110 by the bracket 120, replacing or partially replacing the original middle frame to support the flexible screen 110, thereby providing a support and protection function for a bending area (pad bending) of the flexible screen 110; because the flexible screen 110 comprises a plurality of film layers which are sequentially stacked, dislocation spaces exist in the film layer at the inner side and the film layer at the outer side in the bending process, dislocation values are reserved and designed in the flexible screen folding module 10 through simulation and verification, and the technical problem of dislocation at the inner side and the outer side of the flexible screen 110 is solved; the simulation evaluation is clear in a module stage in advance, and the adhesive area of the flexible screen 110 is directly designed into the flexible screen folding module 10, so that the problem of the adhesive design of the flexible screen 110 and the bracket 120 is solved, and particularly the position of the bending area where no adhesive is adhered is solved; by attaching the flexible screen 110 to the middle frame at a proper position, the flexible screen 110 keeps a proper distance from the rotation center of the hinge 140, and the problem of the position layout between the motion neutral layer of the flexible screen 110 and the hinge 140 in the vertical direction is solved; through the laminating is bent in advance to flexible screen 110, slows down the stress that the gluey material of laminating received between the rete, again with support 120 equipment alleviates the stress problem of the folding module 10 of flexible screen in-process of buckling to solve the shipment that flexible screen 110 buckles the back warpage in advance and bring and the difficult problem of equipment with the complete machine. After the technical problem is solved, the device is assembled with the whole machine, so that the development period can be greatly shortened, the development efficiency is improved, and a more convenient and reliable solution is provided for terminal customers.
In a specific embodiment of the present invention, the bending assembly includes two sets of the hinges 140, two sets of the hinges 140 are respectively disposed at two ends of the decoration 130, and the flexible circuit board 150 is disposed between the two sets of the hinges 140. In this embodiment, the decoration member 130 includes at least two parts, one part is a base portion connected to the bracket 120, the other part is a decoration portion protruding from the bracket 120, the base portion and the bracket 120 are connected by a bolt or attached by glue, and the decoration portion forms a groove to accommodate other components. The decoration 130 is made of an opaque material, and accommodates the hinge 140 and the like so as not to be visible. Usually, one include at least two sets in the subassembly of buckling hinge 140, when including two sets in the subassembly of buckling hinge 140, two sets of hinge 140 set up respectively in the both ends of decoration 130 recess, when including three sets in the subassembly of buckling hinge 140, the third set the hinge is located between two sets of hinge 140, and not with flexible circuit board 150 with the hinge position of support 120 is repeated. The flexible circuit board 150 is disposed between the two sets of hinges 140, and partially accommodated in the groove, and partially extends out of the range of the decoration 130, and is attached to the bracket 120, so that the shape of the flexible circuit board 150 may be concave in the middle, and the two ends are flush. It is understood that the shape of the flexible circuit board 150 is only a preferred embodiment, and in other embodiments, the flexible circuit board may be concave in the middle, one end of the flexible circuit board contacts the bracket 120, and the other end of the flexible circuit board is concave away from the bracket 120. Wherein, the hinge 140 is fastened to the decoration 130 by a screw, the flexible circuit board 150 is adhered to the decoration 130 by a double-sided tape, and after the assembly is completed, as shown in fig. 3 and 4, fig. 3 is a schematic front view of the flexible screen folding module in an embodiment of the present invention; fig. 4 is a schematic reverse view of a flexible screen folding module according to an embodiment of the invention.
On the basis of the above embodiment, the flexible screen 110 includes a bending region, and the bracket 120 is provided with a boss and a groove corresponding to the bending region. In this embodiment, a conventional Chip On Film (COF) package is not adopted, but a more advanced cop (Chip On pi) package is adopted, and a portion of the screen of the flexible screen 110 is bent, that is, in order to make the screen occupation ratio of the main display area of the flexible screen 110 larger, the bending area of the flexible screen 110 is bent to the back of the main display area, so as to achieve the purpose of further reducing the frame. Correspondingly, the support 120 located at the back of the main display area of the flexible screen 110 needs to design a boss and a groove for the bending area, so as to reserve a bending space for the bending area and perform corresponding support and fixation. Because the support 120 needs to protect and support a plurality of components, the material of the support 120 needs to have certain strength, and preferably, the material of the support 120 is metal or high-strength plastic.
In another embodiment of the present invention, as shown in fig. 5, fig. 5 is a schematic structural diagram of a flexible screen folding module according to an embodiment of the present invention. The flexible screen folding module 10 further includes a zip-top Adhesive layer 160, a Metal Sheet (MS) 170, and an optical Adhesive layer (OCA) 180, where the zip-top Adhesive layer 160, the Metal Sheet 170, and the optical Adhesive layer 180 are sequentially stacked between the support 120 and the flexible screen 110. That is, since the surface roughness required by the bracket 120 during the manufacturing process is much larger than the surface roughness of the flexible screen 110, the direct contact between the bracket 120 and the flexible screen 110 may cause a burr on the surface of the bracket 120 to scratch the back plate of the flexible screen 110, and also may reduce the crease.
Therefore, the metal sheet layer 170 is disposed between the bracket 120 and the flexible screen 110, the bracket 120 and the metal sheet layer 170 are connected by the easy-open adhesive layer 160, and the flexible screen 110 and the metal sheet layer 170 are connected by the optical adhesive layer 180, because the metal sheet layer 170 needs to be bent along with the driving of the hinge 140, the bending strength of the metal sheet layer 170 is not too high, and according to a calculation formula of the bending strength, R ═ 3F × (L)/(2 b × (h)), where F denotes a breaking load, L denotes a span, b denotes a width, and h denotes a thickness. Under the same other conditions, the smaller the thickness of the metal sheet layer 170 is, the smaller the bending strength is, and in addition, the overall thickness of the flexible screen folding module 10 needs to be controlled to keep the display device light and thin, the thickness of the metal sheet layer 170 is not too large, preferably, the thickness of the metal sheet layer 170 is less than 0.15mm, and at least the surface roughness Ra of one side surface facing the flexible screen 110 is less than or equal to 3.2 um.
In order to better implement the flexible screen folding module 10 in the embodiment of the present invention, on the basis of the flexible screen folding module 10, the embodiment of the present invention further provides a display device, where the display device includes the flexible screen folding module 10 as described in the above embodiment.
As shown in fig. 6, fig. 6 is a schematic view of a display device according to an embodiment of the invention. The display device comprises a middle frame 20 and the flexible screen folding module 10. The middle frame 20 is disposed on a side of the bending assembly away from the bracket 120 and covers a side surface of the bracket 120. Center 20 covers support 120 the subassembly of buckling is kept away from a side of flexible screen 110, promptly the back of flexible screen 110, and parcel support 120 the side of the subassembly of buckling encircles promptly support 120 four short sides all around of the subassembly of buckling only face towards a side of flexible screen 110 is left empty, and five faces form an accommodation space, accommodation space is used for holding the subassembly of buckling support 120 and other components and parts. The flexible screen 110 is located outside the receiving space but adjacent to the center frame 20.
In the embodiment of the present invention, a buckle and a screw column are disposed on a side surface of the bracket 120, the middle frame 20 correspondingly includes a buckle position 201 and a screw hole 202, the bracket 120 is fixed to the middle frame 20 through the buckle 121 and the screw column 122, the buckle 121 and the buckle position 201 are in one-to-one correspondence, and the screw column 122 and the screw hole 202 are in one-to-one correspondence. The subassembly of buckling with support 120 is connected fixedly, flexible screen 110 with support 120 is pasted fixedly, the subassembly of buckling support 120 with flexible screen 110 constitutes behind the folding module of flexible screen again with center 20 equipment, center 20 with support 120 passes through buckle 121 with it is pre-fixed after buckling 201 one-to-one correspondence lock to detain, will again screw post 122 with screw hole 202 one-to-one lock attaches, support 120 with center 20 accomplishes the connection. Because the decoration 130 is convex relative to the bracket 120, the region where the middle frame 20 is connected to the decoration 130 is concave, so that the flexible screen folding module 10 is tightly attached to the middle frame 20.
On the basis of the above embodiment, the display device further includes a battery compartment and a system board, the battery compartment is disposed on one side of the bending component far away from the bracket 120, and the system board is disposed between the battery compartment and the bending component. Namely, the battery compartment and the system board are further arranged in the accommodating space of the middle frame 20, the battery compartment is arranged below the flexible screen folding module 10 and is closer to the bottom surface of the middle frame 20, and the system board is arranged between the battery compartment and the flexible screen folding module 10.
In this embodiment, the support 120 is welded with a support rib and a positioning column, and the support 120 is fixed to the system board through the support rib and the positioning column. The middle frame 20 has a supporting function for the battery compartment and the system board, and is matched with the bracket 120 to fix the battery compartment and the system board.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again. In a specific implementation, each unit or structure may be implemented as an independent entity, or may be combined arbitrarily to be implemented as one or several entities, and specific implementations of each unit, structure, or operation may refer to the foregoing method embodiments, which are not described herein again.
The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a flexible screen folding module which characterized in that includes:
the bending assembly comprises a hinge, a decoration part and a flexible circuit board, wherein the decoration part is provided with a groove, and the hinge and part of the flexible circuit board are accommodated in the groove;
the bracket is locked and attached to one side of the bending component;
the flexible screen is attached to one side, away from the bending assembly, of the support.
2. The flexible screen folding module of claim 1, wherein the bending assembly comprises two sets of the hinges, the two sets of the hinges are respectively arranged at two ends of the decoration, and the flexible circuit board is arranged between the two sets of the hinges.
3. The flexible screen folding module of claim 1, wherein the hinge is fastened to the trim by a screw, and the flexible circuit board is attached to the trim by a double-sided adhesive.
4. The flexible screen folding module of claim 1, wherein the flexible screen comprises a bending area, and the bracket is provided with a boss and a groove corresponding to the bending area.
5. The flexible screen folding module according to claim 1, further comprising a zip-top adhesive layer, a metal sheet layer and an optical adhesive layer, wherein the zip-top adhesive layer, the metal sheet layer and the optical adhesive layer are sequentially stacked between the support and the flexible screen.
6. A display device, which is characterized by comprising a middle frame and the flexible screen folding module set according to any one of claims 1-5.
7. The display device according to claim 6, wherein the middle frame is disposed on a side of the bending assembly away from the bracket and covers a side of the bracket.
8. The display device according to claim 7, wherein a buckle and a screw column are arranged on a side surface of the bracket, the middle frame correspondingly comprises a buckle position and a screw hole, the bracket is fixed with the middle frame through the buckle and the screw column, the buckle position corresponds to the buckle position one by one, and the screw column position corresponds to the screw hole position one by one.
9. The display device according to claim 6, further comprising a battery compartment and a system board, wherein the battery compartment is disposed on a side of the bending component away from the bracket, and the system board is disposed between the battery compartment and the bending component.
10. The display device according to claim 9, wherein the bracket is welded with a support rib and a positioning column, and the bracket is fixed with the system board through the support rib and the positioning column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011285495.9A CN112382201A (en) | 2020-11-17 | 2020-11-17 | Flexible screen folding module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011285495.9A CN112382201A (en) | 2020-11-17 | 2020-11-17 | Flexible screen folding module and display device |
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| Publication Number | Publication Date |
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| CN112382201A true CN112382201A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011285495.9A Pending CN112382201A (en) | 2020-11-17 | 2020-11-17 | Flexible screen folding module and display device |
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| EP3109847A1 (en) * | 2014-02-21 | 2016-12-28 | Samsung Electronics Co., Ltd. | Foldable device |
| CN107731100A (en) * | 2017-10-25 | 2018-02-23 | 武汉华星光电半导体显示技术有限公司 | Folding display device |
| CN108738258A (en) * | 2018-05-28 | 2018-11-02 | 武汉华星光电半导体显示技术有限公司 | Bent mobile terminal |
| CN208922656U (en) * | 2018-06-15 | 2019-05-31 | 深圳市柔宇科技有限公司 | Flexible display apparatus and electronic device |
| CN110782786A (en) * | 2018-07-31 | 2020-02-11 | 乐金显示有限公司 | Foldable display |
| CN110830618A (en) * | 2018-08-10 | 2020-02-21 | 三星电子株式会社 | Foldable electronic device comprising an antenna |
| CN111885222A (en) * | 2019-05-03 | 2020-11-03 | 三星电子株式会社 | Electronic device |
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2020
- 2020-11-17 CN CN202011285495.9A patent/CN112382201A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3109847A1 (en) * | 2014-02-21 | 2016-12-28 | Samsung Electronics Co., Ltd. | Foldable device |
| CN107731100A (en) * | 2017-10-25 | 2018-02-23 | 武汉华星光电半导体显示技术有限公司 | Folding display device |
| CN108738258A (en) * | 2018-05-28 | 2018-11-02 | 武汉华星光电半导体显示技术有限公司 | Bent mobile terminal |
| CN208922656U (en) * | 2018-06-15 | 2019-05-31 | 深圳市柔宇科技有限公司 | Flexible display apparatus and electronic device |
| CN110782786A (en) * | 2018-07-31 | 2020-02-11 | 乐金显示有限公司 | Foldable display |
| TW202008580A (en) * | 2018-07-31 | 2020-02-16 | 南韓商樂金顯示科技股份有限公司 | Foldable display |
| CN110830618A (en) * | 2018-08-10 | 2020-02-21 | 三星电子株式会社 | Foldable electronic device comprising an antenna |
| CN111885222A (en) * | 2019-05-03 | 2020-11-03 | 三星电子株式会社 | Electronic device |
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Application publication date: 20210219 |
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