CN107767775B - Flexible display module - Google Patents
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- CN107767775B CN107767775B CN201711241817.8A CN201711241817A CN107767775B CN 107767775 B CN107767775 B CN 107767775B CN 201711241817 A CN201711241817 A CN 201711241817A CN 107767775 B CN107767775 B CN 107767775B
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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 relates to a flexible display module. The flexible display module is provided with a bending area and an extension area positioned at the end part of the flexible display module; the flexible display module comprises a first laminated layer and a second laminated layer which are superposed, wherein the first laminated layer and the second laminated layer are in non-fixed connection in at least a part of the bending area and are in fixed connection in the extension area. Above-mentioned flexible display module assembly, on the one hand, because first stromatolite and second stromatolite are at the regional non-fixed connection of buckling, consequently, when flexible display module assembly buckles, first stromatolite and second stromatolite can freely buckle at the region of buckling, have avoided traditional stress problem that bonding material brought the two when buckling. On the other hand, the first lamination and the second lamination are fixedly connected in the extension area, so that relative slippage between the laminations during bending is avoided. Above-mentioned whole difficult flexible display module assembly that causes that makes the in-process of buckling damages.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible display module.
Background
With the development of display technology, flexible display technology is applied more and more widely. To achieve certain functions, it may be desirable for the display to be bendable. However, in the current display screen, the flexible display module is more easily damaged in the bending process than a single laminated layer, thereby causing the poor screen body.
Disclosure of Invention
Therefore, the flexible display module is not easy to damage in the bending process.
A flexible display module is provided with a bending area and an extension area positioned at the end part of the flexible display module;
the flexible display module comprises a first laminated layer and a second laminated layer which are superposed, wherein the first laminated layer and the second laminated layer are in non-fixed connection in at least part of the bending area and are in fixed connection in the extension area.
According to the flexible display module, on one hand, the first lamination and the second lamination are in non-fixed connection in at least part of the bending area, so that when the flexible display module is bent, the first lamination and the second lamination can be freely bent in at least part of the bending area, and the problem of stress of a bonding material to the first lamination and the second lamination when the flexible display module is bent in the prior art is solved. On the other hand, the first lamination and the second lamination are fixedly connected in the extension area, so that relative slippage between the laminations during bending is avoided. Above-mentioned whole difficult flexible display module assembly that causes that makes the in-process of buckling damages.
In one embodiment, a stress buffer cavity is formed between the first lamination layer and the second lamination layer in the bending area.
In one embodiment, the stress buffer cavity is filled with a non-viscous optical filling material.
In one embodiment, the non-tacky optical filler material is an optical lubricant.
In one embodiment, the first laminate and the second laminate are fixedly connected by an adhesive material in the extension zone.
In one embodiment, the bonding material is selected from at least one of OCA, LOCA, and double-sided tape.
In one embodiment, the first laminated layer and the second laminated layer are fixedly connected through a clamping structure in the extension area.
In one embodiment, the first lamination layer is provided with a plurality of first clamping grooves and a plurality of first clamping bulges on the surface of the extension area;
the second lamination is distributed with a plurality of second clamping grooves and a plurality of second clamping grooves which are respectively matched with the first clamping grooves, the first clamping protrusions and the second clamping grooves on the surface of the extension area.
In one embodiment, the flexible display module further includes a third laminated layer stacked on the second laminated layer, and the third laminated layer and the second laminated layer are fixedly connected in the extension area and are not fixedly connected in at least a part of the bending area.
In one embodiment, the first laminate, the second laminate, and the third laminate are independently selected from one of a cover sheet, a protective film, a polarizer, a display unit, a support film, a buffer layer, and a heat dissipation layer, and the first laminate, the second laminate, and the third laminate are different.
Drawings
FIG. 1 is a schematic plan view illustrating a flexible display module according to an embodiment before being bent;
FIG. 2 is a schematic perspective view of a flexible display module according to an embodiment before being bent;
FIG. 3 is a schematic partial perspective view of a flexible display module according to an embodiment after being bent;
FIG. 4 is a schematic partial perspective view of a flexible display module according to another embodiment after being bent;
FIG. 5 is a schematic perspective view of a first stack layer in a flexible display module according to another embodiment;
FIG. 6 is a schematic perspective view of a second stack layer in a flexible display module according to another embodiment;
FIG. 7 is a schematic perspective view of a first stack layer in a flexible display module according to another embodiment;
FIG. 8 is an enlarged view of a portion of FIG. 7;
fig. 9 is a schematic perspective view of a first stack layer in a flexible display module according to another embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
The flexible display module is easy to damage in the bending process of the traditional display screen, and the inventor of the invention intensively researches the problems. The inventor of the invention finds out through research that: in the flexible display module assembly, adopt bonding material to fix between two adjacent stromatolites, during buckling, bonding material can produce the pulling force to the stromatolite for the module is whole to damage at the in-process of buckling more easily for the monospar material.
The inventor of the present invention has found that the bonding material between the laminates generates a tensile force on the laminates, so that the module as a whole is more easily damaged in the bending process than a single material, and then has studied to obtain the technical scheme of the present invention, which can solve the technical problems.
The flexible display module provided by the invention is provided with a display area and a non-display area positioned outside the display area. When the flexible display module is bent, the bending area can be positioned in the display area, the non-display area, the display area and the non-display area. The flexible display module of the present invention is described below by taking the case where all of the bending regions are located in the non-display region.
Referring to fig. 1 to 3, a flexible display module 100 according to an embodiment has a display area 110 and a non-display area 120 located outside the display area 110.
The flexible display module 100 has a bending region 130 and an extending region 140 at an end of the flexible display module. Wherein, the bending region 130 is entirely located in the non-display region 120.
Wherein, a peripheral metal trace (not shown) for transmitting signals is disposed in the bending region 130. Of course, it is understood that the bending region 130 includes, but is not limited to, the above-mentioned peripheral metal traces.
The extension area 140 may or may not include the peripheral metal traces.
The flexible display module 100 includes a first stacked layer 150 and a second stacked layer 160. The first laminate 150 and the second laminate 160 are not fixedly connected at the bending region 130 and are fixedly connected at the extension region 140.
"non-permanent attachment" means that no Adhesive material, such as OCA (optical Clear Adhesive) or other adhesives, is used for permanent attachment; and other mechanical modes are not adopted for fixing. Therefore, when the flexible display module 100 is bent, the first lamination layer 150 and the second lamination layer 160 do not generate an interactive tensile force in the bending region 130.
In the above embodiment, the first laminate 150 and the second laminate 160 are not fixedly connected to each other in all of the bending regions 130. However, it is not limited thereto, and the first lamination layer 150 and the second lamination layer 160 may be non-fixedly connected at a portion of the bending region 130.
Referring to fig. 3, in the flexible display module 100, a stress buffer cavity 170 is formed between the first stack layer 150 and the second stack layer 160 in the bending region. When the flexible display module 100 is bent, the stress buffer cavity 170 separates the first stack 150 and the second stack 160 into independent stacks, so as to prevent the two stacks from generating a tensile force to damage each other.
In the foregoing embodiment, the first laminate 150 and the second laminate 160 are fixedly connected at the extension region 140 by the adhesive material 180. This prevents relative slippage between the first and second laminations 150, 160 during bending.
On the basis of the foregoing embodiment, the adhesive material 180 is selected from at least one of OCA, LOCA, and double-sided tape. These adhesive materials 180 have good adhesive properties and good fixing effects. In addition, when the adhesive material 180 is used in the flexible display module 100 of the present invention, the laminated layers of the flexible display module 100 are not contaminated.
In addition, the first lamination layer 150 and the second lamination layer 160 can be fixedly connected in the display area 110 through the adhesive material 180. Of course, the bonding material in the display area 110 may be the same as or different from the bonding material in the extension area 140.
Referring to fig. 4, on the basis of the foregoing embodiment, the stress buffer cavity 170 is filled with a non-viscous optical filling material 190. The non-adhesive optical filling material 190 serves as protection and stress buffering for the first laminate 150 and the second laminate 160 when the flexible display module 100 is bent. Meanwhile, since the non-adhesive optical filling material 190 has no adhesive property, it is non-fixedly connected with the first laminate 150 and the second laminate 160. Therefore, when the flexible display module 100 is bent, the first lamination layer 150 and the second lamination layer 160 are not pulled, and the flexible display module 100 is prevented from being damaged.
It should be noted that fig. 4 is only used to illustrate the structure of the flexible display module 100, but in actual use, the second laminate 160 and the adhesive material 180 in fig. 4 should be attached together.
On the basis of the foregoing embodiment, the non-viscous optical filling material 190 is an optical lubricant. The optical lubricant, when used as a filler, provides good protection and stress buffering for the first laminate 150 and the second laminate 160.
In addition, in the flexible display module according to the present invention, the fixing and connecting manner of the first lamination layer and the second lamination layer in the extension area is not limited to the adhesion of the above embodiments, and other fixing manners may be adopted.
Referring to fig. 5 and 6, in another embodiment of the flexible display module, the first stacked layer 250 and the second stacked layer 260 are fixedly connected in the extending region by a snap structure.
On the basis of the foregoing embodiment, the first lamination layer 250 has a plurality of first card slots 251 and a plurality of first card protrusions 252 distributed on the surface of the extension region.
The second lamination layer 260 has a plurality of second locking protrusions 261 and a plurality of second locking grooves 262 respectively fitted with the plurality of first locking grooves 251 and the plurality of first locking protrusions 252 distributed on the surface of the extension region.
Since the first lamination layer 250 and the second lamination layer 260 are respectively provided with the clamping grooves and the clamping protrusions on the surface of the extension region, the first lamination layer 250 and the second lamination layer 260 can be better tightly fixed on the extension region.
In this embodiment, the first card slot 251, the first card protrusion 252, and the second card protrusion 261, 262 are all rectangular. In addition, a plurality of first card slots 251 and a plurality of first card protrusions 252 are alternately arranged on the surface of the first laminate 250. That is, first locking protrusions 252 are disposed between two adjacent first locking grooves 251, and first locking grooves 251 are disposed between two adjacent first locking protrusions 252. This is more advantageous to improve the degree of fixation of the first laminate 250 to the second laminate 260 in the extension region.
Of course, the shapes of the first card slot 251, the first card projection 252, and the second card projection 261, the second card slot 262 are not limited thereto. For example, in other embodiments, the shapes of the first card slot 251, the first card projection 252 and the second card projection 261, 262 may also be circular, diamond, regular polygon or other irregular shapes.
In addition, the engaging structure in the flexible display module of the invention is not limited thereto.
Referring to fig. 7 and 8, in another embodiment of the flexible display module, a first card slot 351 and a second card slot 352 in a stepped shape are distributed on a surface of an extension area of a first laminated layer 350. First card slot 351 is located inside second card slot 352. A first locking protrusion 353 is formed between two adjacent second locking grooves 352.
The second laminate (not shown) of the present embodiment has second and third tabs fitted to the first and second card slots 351 and 352 of the first laminate 350, and a third card slot fitted to the first tab 353, on the surface of the extension region.
The clamping groove formed by the steps in the embodiment is matched with the clamping protrusion, and the fixing degree of the first lamination layer and the second lamination layer in the extension area can be improved after clamping.
In addition, in the flexible display module of the present invention, the fixing and connecting manner of the first lamination layer and the second lamination layer in the extension area can also combine the above-mentioned bonding manner with the clamping manner.
Referring to fig. 9, in another embodiment of the flexible display module, a plurality of first engaging grooves 451 and first engaging protrusions 452 are disposed on a surface of the first laminate 450 in an extending region. Meanwhile, the first laminate 450 is further provided with an adhesive material 453 on a part of the surface of the extension region.
Correspondingly, a plurality of second card slots and second card protrusions are arranged on the second lamination (not shown) and are matched with the plurality of first card slots 451 and the first card protrusions 452 arranged at intervals on the first lamination 450.
In the flexible display module of the embodiment, due to the combination of the bonding mode and the clamping mode, the fixing effect of the first lamination layer and the second lamination layer in the extension area is optimal, and the first lamination layer and the second lamination layer are fully prevented from sliding mutually when being bent.
The clamping groove and the clamping protrusion in the above embodiment can be obtained by adopting a pressing mode. The press-fit mould with a surface having a adapted shape can be correspondingly selected according to the desired shape.
On the basis of the foregoing embodiments, the flexible display module further includes a third laminate (not shown) superimposed on the second laminate. The third laminated layer and the second laminated layer are fixedly connected in the extension area and are not fixedly connected in at least part of the bending area.
The connection mode of the third lamination layer and the second lamination layer in the extension area and the bending area is the same as that of the first lamination layer and the second lamination layer in the extension area and the bending area.
It should be noted that, when the flexible display module includes a plurality of stacked layers, two adjacent stacked layers may be connected in the above-mentioned manner. Of course, every two adjacent laminated layers can also be connected by adopting the connection mode.
On the basis of the foregoing embodiment, the first laminate, the second laminate, and the third laminate are independently selected from one of a cover sheet, a protective film, a polarizer, a display unit, a support film, a buffer layer, and a heat dissipation layer, and the first laminate, the second laminate, and the third laminate are different.
For example, when the first stacked layer is a cover plate, the second stacked layer may be a protective film, and the third stacked layer may be a polarizer.
According to the flexible display module, on one hand, the first lamination layer and the second lamination layer are not fixedly connected in the bending area, so that the first lamination layer and the second lamination layer can be freely bent in the bending area when the flexible display module is bent, and the problem of stress of a bonding material on the first lamination layer and the second lamination layer when the flexible display module is bent in the traditional way is solved. On the other hand, the first lamination and the second lamination are fixedly connected in the extension area, so that relative slippage between the laminations during bending is avoided. Above-mentioned whole difficult flexible display module assembly that causes that makes the in-process of buckling damages.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The flexible display module is characterized by comprising a bending area and an extending area positioned at the end part of the flexible display module;
the flexible display module comprises a first laminated layer and a second laminated layer which are superposed, wherein the first laminated layer and the second laminated layer are in non-fixed connection in at least part of the bending area and are in fixed connection in the extension area; a stress buffer cavity is formed between the first lamination and the second lamination in the bending area; the stress buffer cavity is in smooth transition and fixedly connected with the first lamination and the second lamination;
the stress buffer cavity is filled with a non-viscous optical filling material, and the non-viscous optical filling material is an optical lubricant.
2. The flexible display module of claim 1, wherein the first laminate layer and the second laminate layer are fixedly connected by an adhesive material in the extension area.
3. The flexible display module of claim 2, wherein the bonding material is at least one selected from the group consisting of OCA, LOCA, and double-sided tape.
4. The flexible display module of claim 1, wherein the first laminate layer and the second laminate layer are fixedly connected in the extension region by a snap-fit structure.
5. The flexible display module according to claim 4, wherein the first laminate layer has a plurality of first engaging grooves and a plurality of first engaging protrusions formed on a surface of the extending region;
the second lamination is distributed with a plurality of second clamping grooves and a plurality of second clamping grooves which are respectively matched with the first clamping grooves, the first clamping protrusions and the second clamping grooves on the surface of the extension area.
6. The flexible display module of claim 1, further comprising a third laminate layer overlying the second laminate layer, the third laminate layer being fixedly attached to the second laminate layer in the extension region and non-fixedly attached to at least a portion of the bend region.
7. The flexible display module of claim 6, wherein the first, second, and third laminates are independently selected from one of a cover sheet, a protective film, a polarizer, a display unit, a support film, a buffer layer, and a heat sink layer, and wherein the first, second, and third laminates are different.
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| CN201711241817.8A CN107767775B (en) | 2017-11-30 | 2017-11-30 | Flexible display module |
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| CN201711241817.8A CN107767775B (en) | 2017-11-30 | 2017-11-30 | Flexible display module |
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| CN107767775A CN107767775A (en) | 2018-03-06 |
| CN107767775B true CN107767775B (en) | 2020-05-19 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582939A (en) * | 2018-03-29 | 2018-09-28 | 霸州市云谷电子科技有限公司 | A kind of attaching film and flexible display screen |
| TWI678801B (en) * | 2018-06-01 | 2019-12-01 | 友達光電股份有限公司 | Display device |
| CN108877524A (en) * | 2018-06-29 | 2018-11-23 | 武汉华星光电半导体显示技术有限公司 | Flexible OLED display |
| CN108628500B (en) * | 2018-07-18 | 2023-08-18 | 昆山国显光电有限公司 | Display panel |
| CN108648632B (en) * | 2018-07-18 | 2024-03-26 | 昆山国显光电有限公司 | Flexible display device and display apparatus |
| CN108766247B (en) * | 2018-07-18 | 2023-12-22 | 昆山国显光电有限公司 | Display panel and manufacturing method thereof |
| CN109065570A (en) | 2018-07-18 | 2018-12-21 | 昆山国显光电有限公司 | Display panel and display device |
| CN109147568A (en) * | 2018-07-25 | 2019-01-04 | 武汉华星光电半导体显示技术有限公司 | A kind of flexible panel |
| CN109411624B (en) * | 2018-10-18 | 2021-04-20 | 京东方科技集团股份有限公司 | Double-sided adhesive film for flexible display panel, preparation method of double-sided adhesive film and flexible display panel |
| CN111583791B (en) * | 2020-05-07 | 2022-04-26 | 昆山国显光电有限公司 | Flexible screen supporting device and flexible screen terminal |
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Application publication date: 20180306 Assignee: Yungu (Gu'an) Technology Co., Ltd.|Bazhou Yungu Electronic Technology Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd Assignor: Kunshan Guo Xian Photoelectric Co., Ltd. Contract record no.: X2019990000156 Denomination of invention: Flexible display module and fabrication method therefor License type: Common License Record date: 20191030 |
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