CN109448557B - Flexible module, display panel and display device with display panel - Google Patents
Flexible module, display panel and display device with display panel Download PDFInfo
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- CN109448557B CN109448557B CN201811504044.2A CN201811504044A CN109448557B CN 109448557 B CN109448557 B CN 109448557B CN 201811504044 A CN201811504044 A CN 201811504044A CN 109448557 B CN109448557 B CN 109448557B
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- 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 flexible module, a display panel and a display device with the display panel, wherein the flexible module comprises a first film layer and a second film layer which are arranged in a laminating way, at least part of two surfaces of the first film layer and the second film layer which are laminated are provided with a convex combination part, the convex combination part comprises a plurality of first bulges formed on the first film layer at intervals and a plurality of second bulges formed on the second film layer at intervals, and the first bulges and the second bulges are mutually fixed and clamped; in the bending or curling process of the flexible module, the convex joint part can effectively inhibit the relative slippage between the contact surfaces of the two films, thereby reducing the probability of the delamination and debonding phenomenon of the two films.
Description
Technical Field
The embodiment of the invention relates to the technical field of flexible display equipment manufacturing, in particular to a flexible module, a display panel and a display device with the display panel.
Background
With the development of the OLED display technology, the flexible module is more and more widely applied. Flexible modules typically include a laminated multilayer film structure. In practical application, when the flexible display device is continuously bent or curled, due to the different bending capabilities of the two film layers and the shearing force action and other factors between the two film layers, the flexible display device is easy to delaminate, debond and the like, which seriously affect the quality of the flexible module, and affect the quality of the terminal display device.
In view of the above, it is necessary to provide a technical solution to solve the above problems.
Disclosure of Invention
The present invention at least solves one of the technical problems of the prior art, and to achieve the above object, the present invention provides a flexible module, which is specifically designed as follows.
The utility model provides a flexible module, includes first rete and the second rete that the laminating set up, first rete with the two surfaces of second rete laminating are at least locally formed with protruding joint portion mutually, protruding joint portion include a plurality of intervals form in first arch and a plurality of interval on the first rete are formed with second on the second rete is protruding, first arch with the protruding mutual fixed centre gripping of second.
Furthermore, each first protrusion is clamped between at least three second protrusions adjacent to the first protrusion, and each second protrusion is clamped between at least three first protrusions adjacent to the second protrusion.
Furthermore, the bulge combining part is also provided with a plurality of side cavities formed by the surrounding of the side walls of the first bulge and the second bulge; preferably, each said first projection and each said second projection are contiguous to at least one said side cavity.
Further, in the inner region of the convex combining portion, each first convex has three second convex adjacent thereto and distributed on three vertexes of the regular triangle, and each second convex has three first convex adjacent thereto and distributed on three vertexes of the regular triangle.
Furthermore, the first bulge and the second bulge are both in a frustum pyramid shape or a circular truncated cone shape, and the area of the bottom surface of the first bulge and the area of the bottom surface of the second bulge are larger than that of the top surface of the first bulge; preferably, the ratio of the thickness of the first protrusion to the first film layer and the ratio of the thickness of the second protrusion to the second film layer are both between 1:5 and 1: 2.
Furthermore, a first top cavity is formed between the top surface of the first protrusion and the second film layer, and a second top cavity is formed between the top surface of the second protrusion and the first film layer.
Further, the first protrusions and the second protrusions are in the shape of regular hexagonal frustum, three second protrusions adjacent to each first protrusion abut against three non-adjacent side walls of the first protrusions in an inner region of the protrusion combination portion, and three first protrusions adjacent to each second protrusion abut against three non-adjacent side walls of the second protrusions.
Further, the convex combining part is formed at the edge position of the flexible module.
The invention also provides a display panel which comprises the flexible module, wherein the first film layer is a polarizing film, and the second film layer is a touch control film.
The invention also provides a display device, which at least comprises the display panel.
The invention has the beneficial effects that: based on the specific structure of the flexible module, the convex combination part between the two surfaces of the first film layer and the second film layer which are attached to each other can effectively inhibit the relative slippage between the contact surfaces of the two film layers in the bending or curling process of the flexible module, thereby effectively reducing the probability of the delamination and debonding phenomena caused by the relative slippage of the two film layers. In addition, the arrangement of the convex joint part structure can reduce the use amount of the optical cement between the two film layers, even completely eliminate the optical cement between the two film layers under some conditions, and reduce the cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art flexible module;
FIG. 2 is a schematic view of the flexible module of FIG. 1 after crimping;
FIG. 3 is a schematic view of the flexible module of FIG. 1 after being curled for a plurality of times;
FIG. 4 is a schematic structural diagram of a flexible module according to the present invention;
FIG. 5 is an enlarged view of a portion a of FIG. 4;
FIG. 6 is a schematic view of a first embodiment of a cross-section taken at the position A-A' in FIG. 5;
FIG. 7 is a schematic structural view of a flexible module having the structure of FIG. 6, wherein the first film layer and the second film layer are bonded together before the bump bonds are formed;
FIG. 8 is an enlarged view of portion b of FIG. 7;
FIG. 9 is a schematic view of a second embodiment of the cross-section at the position A-A' in FIG. 5;
FIG. 10 is a schematic structural view of a flexible module having the structure of FIG. 9, wherein the first film layer and the second film layer are bonded together before the bump bonds are formed;
FIG. 11 is an enlarged view of portion c of FIG. 10;
FIG. 12 is a schematic plan view of a first embodiment of the flexible module of the present invention;
FIG. 13 is a schematic plan view of a second flexible module according to the present invention;
FIG. 14 is a schematic view of a display device according to the present invention.
Detailed Description
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.
As mentioned in the background, the problem of delamination and debonding of flexible modules in the prior art is described below with reference to fig. 1 to 3.
As shown in fig. 1, the flexible module of the prior art includes two lower films 11 and upper films 12 attached to each other, which have good flexibility and can be bent back and forth in two directions. Before the flexible module is bent, the lower film layer 11 and the upper film layer 12 are flat and are attached to each other without a gap between two contacted surfaces, so that the flexible module has better light transmission performance.
As shown in fig. 2, when the flexible module is bent up and down, a certain difference exists between the lower film 11 and the upper film 12 due to the bending radius, a certain shearing force exists between the contact surfaces of the two films, and when the shearing force is greater than the frictional force between the two films, the contact surfaces of the two films will slip out of place from each other.
After repeated bending for many times, a gap 10 shown in fig. 3 will occur between the lower film 11 and the upper film 12 of the flexible module, i.e. a debonding phenomenon occurs between the lower film 11 and the upper film 12. In the technical field of manufacturing of flexible display devices, if the flexible module forms a light-emitting side element of a display device, due to the existence of the gap 10 between the lower film layer 11 and the upper film layer 12, a local light-emitting path of the display device is affected, so that the image quality of a picture of the display device is poor.
In order to effectively solve the technical problem that two film layers attached to each other are easy to be debonded in the bending process of the flexible module, the invention provides a flexible module, and the invention will be specifically described with reference to the structures shown in fig. 4 to 14.
Referring to fig. 4, the flexible module according to the present invention includes a first film layer 21 and a second film layer 22, which are attached to each other, and a protruding connection portion 20 is formed at least partially on two surfaces of the first film layer 21 and the second film layer 22, which are attached to each other. As shown in fig. 5, the protrusion combination portion 20 includes a plurality of first protrusions 211 formed on the first film layer 21 at intervals and a plurality of second protrusions 221 formed on the second film layer 22 at intervals, and the first protrusions 211 and the second protrusions 221 are fixed to each other.
Based on the above design, in the bending or curling process of the flexible module, the protrusion combination part 20 between the two surfaces of the first film 21 and the second film 22 can effectively inhibit the relative sliding between the contact surfaces of the two films, i.e. the clamping acting force between the first protrusion 21 and the second protrusion 22 is greater than the shearing force between the contact surfaces of the two films in the bending process of the flexible module, so that the probability of the delamination and debonding phenomenon caused by the relative sliding between the two films can be reduced.
As shown in fig. 6 and 9, in the inner region of the protrusion combination portion 20, each first protrusion 211 is sandwiched between three adjacent second protrusions 221, and each second protrusion 221 is sandwiched between three adjacent first protrusions 211.
In the present invention, as shown in fig. 6 and 9, it is easier to understand that the fact that each first protrusion 211 is sandwiched between three adjacent second protrusions 221 means that: the three second protrusions 221 simultaneously abut against three different portions of the circumferential side of one first protrusion 211, so that the first protrusion 211 is prevented from sliding relative to the second film 22. Accordingly, the fact that each second protrusion 221 is sandwiched between three first protrusions 211 adjacent to it means that: the three first protrusions 211 abut against three different portions of the circumferential side of one second protrusion 221 at the same time, so that the second protrusion 221 is prevented from sliding relative to the first film 21.
It is understood that the above description of the present invention regarding the fitting relationship of the first projection 21 and the second projection 22 is limited to the "inner region of the projection coupling portion 20", not the entire region. This is because, for the edge region opposite to the inner region of the boss coupling part 20, there is no second protrusion 221 abutting against the first protrusion 211 at the edge region of the boss coupling part 20 on the side facing the outside of the boss coupling part 20, and there is no first protrusion 211 abutting against the second protrusion 221 at the edge region of the boss coupling part 20 on the side facing the outside of the boss coupling part 20. This results in the number of second protrusions 221 adjacent to each first protrusion 211 of the edge region being smaller than the number of second protrusions 221 adjacent to the first protrusions 211 of the inner region, and the number of first protrusions 211 adjacent to the second protrusions 221 of the edge region being smaller than the number of first protrusions 211 adjacent to the second protrusions 221 of the inner region.
In this embodiment, the number of the second protrusions 221 adjacent to the first protrusions 211 at the edge region of the protrusion combination portion 20 is 1 or 2, and the number of the first protrusions 211 adjacent to the second protrusions 221 at the edge region of the protrusion combination portion 20 is also 1 or 2.
In other embodiments of the present invention, not shown, in the inner region of the convex combining portion 20, more than three second convex portions 221 may abut on the periphery of each first convex portion 211, and more than three first convex portions 211 may abut on the periphery of each second convex portion 221, and particularly, the inner region is not further expanded.
In addition, as shown in fig. 6 and 9, the convex combining part 20 according to the present invention further has a plurality of side cavities 200, each side cavity 200 is defined by a plurality of first protrusions 211 and side walls of second protrusions 221, and each first protrusion 211 and each second protrusion 221 are adjacent to at least one side cavity 200. In the specific implementation of the embodiment shown in fig. 6 and 9, each of the first protrusions 211 and each of the second protrusions 221 are connected to three different side cavities 200 in the inner region of the protrusion coupling portion 20.
Based on the arrangement of the side cavity 200, when the first protrusion 211 and the second protrusion 221 are squeezed in the bending process of the flexible module, both the first protrusion 211 and the second protrusion can deform adaptively according to the pressure and protrude into the side cavity 200, so that the influence of the deformation of the first protrusion 211 and the second protrusion 221 on the thickness of the flexible module in the bending process of the flexible module is reduced; and the first protrusion 211 and/or the second protrusion 221 are/is self-adapted to deform and protrude into the side cavity 200 when being pressed, thereby improving the soft characteristic of the flexible module.
Based on the above implementation structure of the present invention, it is easy to understand that in some embodiments, the amount of the optical adhesive used between the two film layers can be reduced by the arrangement of the protruding combination portion 20, and even in some cases, the optical adhesive between the two film layers can be completely eliminated. Through the mode, the thickness of the flexible module can be effectively reduced, and the flexible module can better meet the application scene with higher requirements on lightness and thinness.
In a preferred embodiment of the present invention, in the inner region of the protrusion coupling portion 20, each first protrusion 211 has three second protrusions 221 adjacent thereto, and the three second protrusions 22 are distributed on three vertices of a regular triangle; each second protrusion 221 has three first protrusions 211 adjacent to it, and the three first protrusions 211 are also distributed on three vertices of a regular triangle. As shown in fig. 6 and 9, the first protrusions 211 and the second protrusions 221 are uniformly and equidistantly distributed, so that a stable restraining relationship is formed between the first protrusions 211 and the second protrusions 221, and when the flexible module is bent, the shearing force between the first film layer 21 and the second film layer 22 can be uniformly dispersed by different regions of the protrusion bonding portion 20.
Referring to fig. 5, the first protrusion 211 and the second protrusion 221 in the present invention are both in a shape of a truncated pyramid or a circular truncated cone, wherein the area of the bottom surface of the first protrusion 211 and the area of the top surface of the second protrusion 221 are larger than the area of the top surface of the first protrusion. In other words, the cross-sectional areas of the first protrusion 211 and the second protrusion 221 in the protrusion forming directions are gradually reduced, so that the first film layer 21 and the second film layer 22 are easily attached to each other, and the first protrusion 211 and the second protrusion 221 form a fitting relationship as shown in fig. 6 and 9.
In order to better inhibit the relative slippage between the contact surfaces of the two film layers and avoid making the thickness of the two film layers too thick, the ratio of the thickness of the first protrusion 211 to the thickness of the first film layer 21 is in the range of 1:5 to 1:2, and the ratio of the thickness of the second protrusion 221 to the thickness of the second film layer 22 is in the range of 1:5 to 1: 2.
The protruding height (i.e. thickness) of the first protrusion 211 and the second protrusion 221 in the present invention is in the range of 5 to 20 μm. In the embodiment shown in fig. 5, the protrusion height h1 of the second protrusion 221 is preferably 12 μm, and the first protrusion 211 has generally the same protrusion height as the second protrusion 221. The specific parameters of the protruding heights of the first protrusion 211 and the second protrusion 221 are not listed here.
As a preferred embodiment of the present invention, referring to fig. 5, in the present invention, a first top cavity 220 is formed between the top surface of the first protrusion 211 and the second film layer 22, and a second top cavity 210 is formed between the top surface of the second protrusion 221 and the first film layer 21. Thus, when the flexible module bends the first protrusion 211 and the second protrusion 221 and is squeezed, the first protrusion 211 and the second protrusion 221 not only deform adaptively according to the pressure and protrude into the side cavity 200, but also protrude into the first top cavity 220 and the second top cavity 210, thereby completely avoiding the influence of the deformation of the first protrusion 211 and the second protrusion 221 on the thickness of the flexible module during the bending process of the flexible module.
Corresponding to the protruding height of the first protrusion 211 and the second protrusion 221, the depth of the first top cavity 220 and the second top cavity 210 in the thickness direction of the flexible module is 0.5-3 μm. In the embodiment shown in FIG. 5, the thickness h2 of the second top cavity 210 in the thickness direction of the flexible module is preferably 1.6 μm, and the first top cavity 220 has the same depth dimension as the second top cavity 210. Other specific depth dimensions of the first top cavity 220 and the second top cavity 210 in the thickness direction of the flexible module are not listed.
In the present invention, the first protrusion 211 and the second protrusion 221 have a regular hexagonal frustum shape and a circular truncated cone shape, and two embodiments will be described in detail below.
Referring to fig. 6, 7 and 8, in the present embodiment, the first protrusions 211 and the second protrusions 221 are regular hexagonal frustum shaped, in the inner region of the protrusion combining portion 20, three second protrusions 221 adjacent to each first protrusion 211 abut against three non-adjacent side walls of the first protrusion 211, and three first protrusions 211 adjacent to each second protrusion 221 abut against three non-adjacent side walls of the second protrusion 221. That is, the adjacent first protrusion 211 and second protrusion 221 in this embodiment are engaged in a surface-to-surface contact manner.
In the specific implementation process, the side lengths of the bottom surfaces of the first protrusion 211 and the second protrusion 221 are both 2-5 μm, and the side lengths of the top surfaces are both 1.3-3 μm. Referring to FIG. 8, in the present embodiment, the bottom surface 2111 of the first protrusion 211 has a side length of 3.5 μm, and the top surface 2112 has a side length of 1.6 μm; the bottom and top surfaces of the second protrusions 221 preferably have the same size as the bottom and top surfaces of the first protrusions 211.
Referring to fig. 9, 10 and 11, in the present embodiment, the first protrusion 211 and the second protrusion 221 are both in the shape of a circular truncated cone, the radius ranges of the bottom surfaces of the first protrusion 211 and the second protrusion 221 are both 3-7 μm, and the radius ranges of the top surfaces are both 2-5 μm. Referring to FIG. 11, in the present embodiment, the radius of the bottom surface 2111 of the first protrusion 211 is 5 μm, and the radius of the top surface 2112 is 3.5 μm; the bottom and top surfaces of the second protrusions 221 preferably have the same size as the bottom and top surfaces of the first protrusions 211.
Based on two kinds of specific design shapes more than first protruding 211 and second protruding 221, the cooperation between first protruding 211 and the second protruding 221 is comparatively stable, can ensure that flexible template can resume the original state fast after repeated many times of buckling.
In the specific implementation process, the first film layer 21 and the second film layer 22 of the flexible module can be attached in a vacuum adsorption attachment mode; in order to further optimize the quality of the flexible module, a thin layer of optical glue is disposed between the first film layer 21 and the second film layer 22 except for the raised bonding portion 20.
The flexible module of the present invention can be used as a light-emitting element of a display device, and as a preferred embodiment, the convex coupling portion 20 is formed at an edge position of the flexible module. Referring to fig. 12 and 13, the convex coupling portion 20 is formed continuously at four side edges of the flexible module or only at a pair of side edges of the flexible module. Whereas the raised engagement portion 20 is formed at an edge position of the flexible module. In the specific implementation process, the protruding combining portion 20 can be arranged outside the picture range of the display device, so that the imaging picture of the display device is not affected, and the good light transmission effect of the middle area of the flexible module can effectively ensure the picture quality of the display device.
Referring to fig. 14, the present invention further provides a display panel, and the display device has the above flexible module. Specifically, in the present embodiment, the first film layer 21 constituting the flexible module is a polarizer layer, and the second film layer 22 is a touch layer. In addition, the display device further includes a display panel 23 disposed on the lower side of the polarizer layer and a cover plate 24 attached to the upper surface of the touch layer, wherein the display panel 23 may be an OLED panel.
In addition, the present invention also provides a display device (not shown in the figures) having at least the display panel shown in fig. 14.
It is understood that, in other embodiments of the invention, the display device is not limited to the structure shown in fig. 14, and the flexible module is not limited to the polarizer layer and the touch layer, that is, in other design structures of the limiting device, the first film layer 21 and the second film layer 22 may also be other film layers attached to each other, and are not specifically developed herein.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A flexible module comprises a first film layer and a second film layer which are arranged in a laminating manner, and is characterized in that at least part of two surfaces of the first film layer, which are laminated with the second film layer, are provided with a bulge combining part, the bulge combining part comprises a plurality of first bulges formed on the first film layer at intervals and a plurality of second bulges formed on the second film layer at intervals, and the first bulges and the second bulges are mutually fixed and clamped; the bulge combining part is also provided with a plurality of side cavities formed by encircling the side walls of the first bulges and the second bulges, and each first bulge and each second bulge are adjacent to at least one side cavity.
2. The flexible module of claim 1, wherein each of the first protrusions is sandwiched between at least three adjacent second protrusions, and each of the second protrusions is sandwiched between at least three adjacent first protrusions.
3. The flexible module of claim 1, wherein each of the first protrusions has three second protrusions adjacent thereto and distributed at three vertices of a regular triangle, and each of the second protrusions has three first protrusions adjacent thereto and distributed at three vertices of a regular triangle.
4. The flexible module of claim 2, wherein the first protrusion and the second protrusion are both in the shape of a truncated pyramid or a truncated cone, and the area of the bottom surface of the first protrusion and the area of the top surface of the second protrusion are larger than the area of the top surface of the first protrusion and the area of the bottom surface of the second protrusion.
5. The flex module of claim 4, wherein the ratio of the thickness of the first bump to the first membrane layer and the ratio of the thickness of the second bump to the second membrane layer are each between 1:5 and 1: 2.
6. The flexible module of claim 4, wherein a first top cavity is formed between the top surface of the first protrusion and the second membrane layer, and a second top cavity is formed between the top surface of the second protrusion and the first membrane layer.
7. The flexible mold unit according to claim 4, 5 or 6, wherein the first protrusions and the second protrusions are in the shape of regular hexagonal frustum, and in the inner region of the protrusion combination portion, three second protrusions adjacent to each first protrusion abut against three non-adjacent sidewalls of the first protrusion, and three first protrusions adjacent to each second protrusion abut against three non-adjacent sidewalls of the second protrusion.
8. A flexible module according to any one of claims 1-6, characterized in that the raised bonding portions are formed at edge positions of the flexible module.
9. A display panel comprising the flexible module of any of claims 1-8, the first film layer being a polarizing film and the second film layer being a touch film.
10. A display device characterized by having at least the display panel described in claim 9.
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| CN201811504044.2A CN109448557B (en) | 2018-12-10 | 2018-12-10 | Flexible module, display panel and display device with display panel |
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| CN103822188A (en) * | 2014-02-11 | 2014-05-28 | 青岛海信电器股份有限公司 | Silicone frame, backlight module and display device |
| CN204229775U (en) * | 2014-11-26 | 2015-03-25 | 昆山国显光电有限公司 | Flexible display screen |
| CN106919223B (en) * | 2015-12-28 | 2024-01-23 | 联想(北京)有限公司 | Elastic device and deformable equipment |
| CN105679774B (en) * | 2016-03-23 | 2019-09-27 | 大连东方科脉电子股份有限公司 | Flexible display base plate film and its manufacturing method, display device |
| CN206422058U (en) * | 2016-12-30 | 2017-08-18 | 深圳市柔宇科技有限公司 | Display module |
| CN107017344A (en) * | 2017-03-30 | 2017-08-04 | 昆山工研院新型平板显示技术中心有限公司 | Flexible electronic device and its manufacture method |
| CN106910430B (en) * | 2017-05-02 | 2020-04-10 | 京东方科技集团股份有限公司 | Display assembly and mobile device with same |
| CN108346376A (en) * | 2018-01-19 | 2018-07-31 | 昆山国显光电有限公司 | Flexible module and flexible display device |
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Application publication date: 20190308 Assignee: Bazhou Yungu Electronic Technology Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd.|Kunshan Guoxian photoelectric Co., Ltd Assignor: The valley (Guan) Technology Co. Ltd. Contract record no.: X2019990000155 Denomination of invention: Flexible module, display panel and display device with display panel License type: Common License Record date: 20191030 |
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Effective date of registration: 20191210 Address after: No. 2 Xiangshan Avenue, Yongning Street, Zengcheng District, Guangzhou, Guangdong province (the core of Zengcheng economic and Technological Development Zone) Applicant after: Guangzhou Guoxian Technology Co., Ltd Address before: 065500 Hebei Langfang County Guan emerging industry demonstration area Applicant before: The valley (Guan) Technology Co. Ltd. |
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