Metal film for display device, display device and method for manufacturing same

Abstract

According to the present invention, a metal film, a display device, and a manufacturing method thereof are provided. The display device includes a display panel, a metal film, and an adhesive layer. The metal film includes a base layer including a first surface and a second surface facing the first surface, and a plurality of filaments. The plurality of filaments are formed on the first surface of the base layer, and the second surface of the base layer is adhered to the display panel via the adhesive layer. The present invention can improve the versatility of application and heat resistance performance of the display device by using a metal film having filaments.

Description

[Technical Field]

[0001] The present invention relates to the field of display technology, in particular Display device The present invention relates to a metal film, a display device, and a manufacturing method thereof. [Background technology]

[0002] FIG. 1 is a schematic diagram of a display device according to the prior art. The flexible display device 10 includes a flexible display panel 11, a first adhesive layer 12, and a backplate 13. The first adhesive layer 12 is disposed between the flexible display panel 11 and the backplate 13 to bond them together. The backplate 13 supports the flexible display panel 11. The backplate 13 includes a metal plate 14, a second adhesive layer 15, and a protective layer 16. In the prior art, the metal plate 14 is typically made of stainless steel, and its high elasticity and strength contribute to supporting the flexible display panel 11. Furthermore, forming multiple hollow structures in the metal plate 14 reduces the elastic deformation resistance of stainless steel, ensuring the display device 10 can be bent or folded. However, the backplate 13 made of stainless steel reduces the heat dissipation performance of the flexible display device 10.

[0003] The present invention has been made in view of this, and is intended to solve the problems of the prior art. Display device The present invention aims to provide a metal film, a display device, and a method for manufacturing the same. Summary of the Invention [Problem to be solved by the invention]

[0004] The back plate 13 made of a stainless steel metal plate 14 reduces the heat dissipation performance of the flexible display device 10. In view of this, the present invention aims to provide a metal film, a display device, and a manufacturing method thereof that solves the problems of the prior art. [Means for solving the problem]

[0005] To achieve the above object, according to one aspect of the present invention, there is provided a metal film including a base layer and a plurality of filaments formed on one surface of the base layer.

[0006] In one aspect of the present invention, the base layer and the plurality of filaments are integrally formed.

[0007] In one aspect of the present invention, each of the filaments includes a hook structure at the end.

[0008] In one aspect of the present invention, the metal film is made of aluminum or copper.

[0009] In one embodiment of the present invention, each of the filaments has a cross-sectional diameter of 0.05 mm to 1 mm.

[0010] According to another aspect of the present invention, there is provided a display device comprising: a display panel; a base layer including a first surface and a second surface opposite to the first surface; a metal film including a plurality of the filaments formed on the first surface of the base layer; and an adhesive layer provided between the display panel and the metal film, wherein the second surface of the base layer is adhered to the display panel via the adhesive layer.

[0011] In another aspect of the present invention, the base layer of the metal film and the plurality of filaments are integrally formed.

[0012] In another aspect of the invention, each of the filaments includes a hook structure at the end.

[0013] In another aspect of the present invention, the display panel includes a substrate adhered to the second surface of the base layer via the adhesive layer, a display function layer provided on the substrate, and a polarizing sheet provided on the display function layer.

[0014] In another aspect of the present invention, the metal film is made of aluminum or copper.

[0015] In another aspect of the invention, each of the filaments has a cross-sectional diameter of 0.05 mm to 1 mm.

[0016] According to another aspect of the present invention, there is provided a method for manufacturing a display device, comprising: providing a base layer and a display panel having a first surface and a second surface opposite to the first surface; forming a plurality of filaments on the first surface of the base layer; adhering the display panel to the second surface of the base layer; and providing a metal film consisting of the base layer and the plurality of filaments so as to support the display panel.

[0017] In another aspect of the present invention, forming the plurality of filaments on the first surface of the base layer includes forming the plurality of filaments on the first surface of the base layer by mechanical thread rolling.

[0018] In another aspect of the present invention, forming the plurality of filaments on the first surface of the base layer includes forming a patterned layer on the first surface of the base layer, partially removing the base layer not covered by the patterned layer so that a plurality of vertical filaments are formed on the first surface of the base layer, and forming the plurality of filaments on the first surface of the base layer by applying pressure to the plurality of vertical filaments in the base layer so that the plurality of vertical filaments are bent.

[0019] In another aspect of the invention, each of the filaments includes a hook structure at the end.

[0020] In another aspect of the present invention, the base layer of the metal film and the plurality of filaments are integrally formed.

[0021] In another aspect of the present invention, providing the display panel includes providing a substrate, providing a display function layer on the substrate, providing a polarizing sheet on the display function layer, providing an adhesive layer between the substrate and the base layer, and connecting the substrate and the second surface of the base layer via the adhesive layer.

[0022] In another aspect of the present invention, the metal film is made of aluminum or copper.

[0023] In another aspect of the invention, each of the filaments has a cross-sectional diameter of 0.05 mm to 1 mm. [Effects of the Invention]

[0024] According to the present invention, a metal film having multiple filaments is provided, thereby improving the heat dissipation performance of a display device. Furthermore, the ends of the filaments of the metal film include hook structures, thereby forming a hook surface with a Velcro® structure on the metal film. This allows the display device to be attached to an object with a corresponding Microsoft® structure on its surface using the Velcro principle, thereby improving versatility of application. Furthermore, compared to the prior art, the present invention avoids the use of stainless steel plates with multiple hollow structures, which are difficult to manufacture and have a low material utilization rate, thereby significantly reducing production difficulty and costs. [Brief explanation of the drawings]

[0025] Hereinafter, the present invention and its effects will be clarified by describing embodiments of the present invention with reference to the drawings. [Figure 1] 1 is a schematic diagram illustrating a display device according to the prior art; [Figure 2] 1 is an exploded view of components of a display device according to an embodiment of the present invention; [Figure 3] FIG. 3 is a cross-sectional view of the display device of FIG. [Figure 4] FIG. 4 is an enlarged view of a portion A of the display device of FIG. [Figure 5A] 1A to 1C are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a first embodiment of the present invention. [Figure 5B] 1A to 1C are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a first embodiment of the present invention. [Figure 5C] 1A to 1C are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a first embodiment of the present invention. [Figure 5D] 1A to 1C are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a first embodiment of the present invention. [Figure 5E] 1A to 1C are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a first embodiment of the present invention. [Figure 6A] 5A to 5C are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a second embodiment of the present invention. [Figure 6B] 5A to 5C are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a second embodiment of the present invention. [Figure 6C] 5A to 5C are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a second embodiment of the present invention. [Figure 6D] 5A to 5C are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a second embodiment of the present invention. [Figure 6E] 5A to 5C are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] The invention according to the embodiments of the present invention will be clearly and fully described below with reference to the drawings according to the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, and do not represent all of the embodiments of the present invention. According to the embodiments of the present invention, those skilled in the art can easily conceive other embodiments. The conceivable embodiments fall within the protection scope of the present invention.

[0027] FIG. 2 is an exploded view of components of a display device according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of the display device of FIG. 2. As shown in FIGS. 2 and 3, the display device 100 includes a display panel 110, an adhesive layer 120, a metal film 130, a flexible circuit board 140, and a driving circuit board 150. The adhesive layer 120 is provided between the display panel 110 and the metal film 130 to connect the display panel 110 and the metal film 130. The metal film 130 is provided to support the display panel 110. The display panel 110 includes a substrate 111, a display function layer 112, and a polarizing sheet 113. The flexible circuit board 140 and the driving circuit board 150 are provided on one side of the display function layer 112 to be electrically connected to the display function layer 112. The display function layer 112 is provided on the substrate 111, and the polarizing sheet 113 is provided on the display function layer 112.

[0028] The display device 100 of the present invention may be a flexible display device or a non-flexible display device. The display device 100 includes, but is not limited to, a liquid crystal display device or an organic light-emitting diode (OLED) display device. When the display device 100 is flexible, the display device 100 has bendable or foldable properties. The display panel 110 and the metal film 130 are a flexible display panel and a flexible metal film, respectively. When the display device 100 is an OLED display device, the display function layer 112 of the display panel 110 includes an OLED element.

[0029] 3, the metal film 130 includes a base layer 131 and a plurality of filaments 132. The base layer 131 includes a first surface 1311 and a second surface 1312 facing away from the first surface 1311. The plurality of filaments 132 are formed on the first surface 1311 of the base layer 131. The second surface 1312 of the base layer 131 of the metal film 130 is bonded to the substrate 111 of the display panel 110 via an adhesive layer 120.

[0030] In this embodiment, the metal film 130 is made of a heat-dissipating material, such as aluminum or copper. Then, a plurality of filaments 132 are formed on the first surface 1311 of the base layer 131 of the metal film 130 by etching or mechanical thread rolling. The number of filaments 132 per unit area can be controlled by controlling the dimensions of the filaments 132. Increasing the number of filaments 132 efficiently increases the heat-dissipating area of ​​the metal film 130, thereby providing the display device 100 with excellent heat-dissipating performance. In this embodiment, the cross-sectional diameter of each filament 132 is 0.05 mm to 1 mm. To prevent the filaments 132 from being separated from the base layer 131, it is preferable that the base layer 131 of the metal film 130 and the filaments 132 are integrally formed.

[0031] FIG. 4 is an enlarged view of portion A of the display device of FIG. 3. As shown in FIG. 4, the end of the filament 132 includes a hook structure 1321, thereby forming a Velcro-like hook surface on the first surface 1311 of the base layer 131. The Velcro principle allows the display device 100 to be attached to an object having a corresponding Microsoft surface, thereby improving versatility. The same principle also allows the display device 100 to be easily separated from an object. Furthermore, if the display device 100 of the present invention is flexible, the metal film 130 can be used to attach the display device 100 of the present invention to a curved surface having a corresponding Microsoft surface. Furthermore, the Velcro principle allows the filament 132 to have a hairy surface that corresponds to the hook surface, allowing it to be attached to an object having a Microsoft surface. However, this is not intended to be limiting. Compared to the prior art, the present invention can avoid the use of a stainless steel plate with multiple hollow structures, which is difficult to manufacture and has a low material utilization rate, thereby significantly reducing production difficulty and costs.

[0032] 5A to 5E are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a first embodiment of the present invention.

[0033] First, as shown in FIG. 5A , a display panel 210 and a base layer 231 are provided. The display panel 210 includes a substrate 211, a display function layer 212, and a polarizing sheet 213. The substrate 211 is provided to be bonded to the base layer 231. The display function layer 212 is provided on the substrate 211, and the polarizing sheet 213 is provided on the display function layer 212. The display device of the present invention may be a flexible display device or a non-flexible display device. When the display device is flexible, the display device 100 has a bendable or foldable characteristic. When the display device is an OLED display device, the display function layer 112 of the display panel 110 includes an OLED element.

[0034] Next, a plurality of filaments 232 are formed on the first surface 2311 of the base layer 231 by mechanical thread rolling. As shown in FIG. 5B, the base layer 231 includes a first surface 2311 and a second surface 2312 facing away from the first surface 2311. The base layer 231 is placed on the surface treatment machine 20. The surface treatment machine 20 includes a plurality of protrusions 21. As shown in FIG. 5C, the surface treatment machine 20 is controlled to move along the base layer 231, thereby bringing the protrusions 21 into contact with the base layer 231. Next, the surface treatment machine 20 is controlled so that the protrusions 21 penetrate into the first surface 2311 of the base layer 231. In this embodiment, the depth to which the protrusions 21 penetrate into the base layer 231 is 0.1 mm to 1 mm. 5D , by fixing the base layer 231 and controlling the surface treatment machine 20 to move along the first surface 2311 of the base layer 231, a plurality of filaments 232 can be formed on the first surface 2311 of the base layer 231. As the surface treatment machine 20 moves, the length of the filaments 232 gradually increases, allowing the ends of the filaments 232 to extend along the surface of the protrusions 21 until they come into contact with the bases of the protrusions 21. Then, due to the restriction of the bases of the protrusions 21, the ends of the filaments 232 can be bent to form a hook structure.

[0035] Finally, as shown in Fig. 5E, the display panel 210 is adhered to the second surface 2312 of the base layer 231, thereby forming the display device 200. Specifically, the display panel 210 is adhered to the base layer 231 via the adhesive layer 220. The base layer 231 and the plurality of filaments 232 form a metal film 230. The metal film 230 is provided so as to support the display panel 210.

[0036] In this embodiment, the metal film 230 is made of a heat-dissipating material, such as aluminum or copper. The number of filaments 232 per unit area can be controlled by controlling the dimensions of the filaments 232. Increasing the number of filaments 232 efficiently increases the heat-dissipating area of ​​the metal film 230, thereby providing the display device 200 with excellent heat dissipation performance. In this embodiment, the cross-sectional diameter of each filament 232 is 0.05 mm to 1 mm. Furthermore, the base layer 231 of the metal film 230 and the filaments 232 are integrally formed, preventing the filaments 232 from separating from the base layer 231. Meanwhile, the ends of the filaments 232 may include a hook structure, forming a hook surface similar to Velcro on the first surface 2311 of the base layer 231. The display device 200 can be attached to an object with a corresponding Microsoft surface structure based on the Velcro principle, thereby improving versatility. The same principle can be used to easily separate the display device 200 from an object. Furthermore, when the display device 200 of the present invention is flexible, the display device 200 of the present invention can be attached to a curved surface having a corresponding surface Microsoft structure by the metal film 230. In terms of application area, the display device 200 of the present invention has extremely wide versatility.

[0037] 6A to 6E are schematic diagrams of a display device, illustrating a method for manufacturing a display device according to a second embodiment of the present invention.

[0038] First, as shown in FIG. 6A , a display panel 310 and a base layer 331 are provided. The base layer 331 includes a first surface 3311 and a second surface 3312 facing away from the first surface 3311. The display panel 310 includes a substrate 311, a display function layer 312, and a polarizing sheet 313. The substrate 311 is provided to be bonded to the second surface 3312 of the base layer 331. The display function layer 312 is provided on the substrate 311, and the polarizing sheet 313 is provided on the display function layer 312. The display device of the present invention may be a flexible display device or a non-flexible display device. If the display device is flexible, it has a bendable or foldable characteristic. If the display device is an OLED display device, the display function layer 312 of the display panel 310 includes an OLED element.

[0039] Next, a plurality of filaments 332 are formed on the first surface 3311 of the base layer 331. As shown in FIG. 6B, a patterned layer 4 is formed on the first surface 3311 of the base layer 331 using a photomask and a corresponding etching method. As shown in FIG. 6C, the base layer 331 is placed in a chemical etching machine, and the base layer 331 not covered by the patterned layer 4 is partially removed with a chemical solution, thereby forming a plurality of vertical filaments 332′ on the first surface 3311 of the base layer 331. As shown in FIG. 6D, the patterned layer 4 is removed, and the etched base layer 331 is placed in a press 30. Pressure is applied to the plurality of vertical filaments 332′ of the base layer 331 so that the vertical filaments 332′ are bent, thereby forming a plurality of filaments 332 on the first surface 3311 of the base layer 331.

[0040] Finally, as shown in Fig. 6E, the display panel 310 is adhered to the second surface 3312 of the base layer 331, thereby forming the display device 300. Specifically, the display panel 310 is adhered to the base layer 331 via the adhesive layer 320. The base layer 331 and the plurality of filaments 332 form a metal film 330. The metal film 330 is provided so as to support the display panel 310.

[0041] In this embodiment, the metal film 330 is made of a heat-dissipating material, such as aluminum or copper. The number of filaments 332 per unit area can be controlled by controlling the dimensions of the filaments 332. Increasing the number of filaments 332 efficiently increases the heat-dissipating area of ​​the metal film 330, thereby providing the display device 300 with excellent heat dissipation performance. In this embodiment, the cross-sectional diameter of each filament 332 is 0.05 mm to 1 mm. Furthermore, the base layer 331 of the metal film 330 and the filaments 332 are integrally formed, preventing the filaments 332 from separating from the base layer 331. Meanwhile, the ends of the filaments 332 may include a hook structure, forming a hook surface similar to Velcro on the first surface 3311 of the base layer 331. The display device 300 can be attached to an object with a corresponding Microsoft surface structure based on the Velcro principle, thereby improving versatility. The same principle can be used to easily separate the display device 300 from an object. Furthermore, when the display device 300 of the present invention is flexible, the display device 300 of the present invention can be attached to a curved surface having a corresponding surface Microsoft structure by the metal film 330. In terms of application area, the display device 300 of the present invention has extremely wide versatility.

[0042] As described above, the present invention provides a metal film having multiple filaments, thereby improving the heat dissipation performance of a display device. Furthermore, the ends of the filaments of the metal film can include hook structures, forming a hook surface with a Velcro structure on the metal film. This allows the display device to be attached to an object with a corresponding Microsoft surface structure using the Velcro principle, thereby improving versatility of application. Furthermore, compared to the prior art, the present invention avoids the use of stainless steel plates with multiple hollow structures, which are difficult to manufacture and have a low material utilization rate, thereby significantly reducing production difficulty and costs.

[0043] The metal film, display device, and manufacturing method thereof according to the present embodiment have been described above. The principles and embodiments of the present invention have been explained using specific examples. The explanation of the above examples is intended to facilitate understanding of the contents of the present invention. It should be understood by those skilled in the art that the contents described in the above examples can be modified or some of the configurations can be replaced with equivalents. These modifications or replacements should not deviate from the contents of the present invention.

Claims

1. A metal film for a display device, comprising: A base layer; a plurality of filaments for improving heat dissipation performance, the plurality of filaments being formed on one side of the base layer, and an end of each of the filaments having a hook structure, thereby forming a hook surface having a Velcro structure on the metal film; Metal film on a display device.

2. the base layer and the plurality of filaments are integrally formed; The metal film of the display device according to claim 1 .

3. The metal film is made of aluminum or copper. The metal film of the display device according to claim 1 .

4. Each of the filaments has a cross-sectional diameter of 0.05 mm to 1 mm. The metal film of the display device according to claim 1 .

5. A display panel; a metal film including: a base layer including a first surface and a second surface opposite to the first surface; and a plurality of filaments formed on the first surface of the base layer, each of the filaments including a hook structure at an end thereof, thereby forming a hook surface having a Velcro structure on the metal film; an adhesive layer provided between the display panel and the metal film; the second surface of the base layer is bonded to the display panel via the adhesive layer; The display panel includes: a substrate adhered to the second surface of the base layer via the adhesive layer; A display function layer provided on the substrate; A polarizing sheet provided on the display function layer, Display device.

6. the base layer of the metal film and the plurality of filaments are integrally formed; The display device according to claim 5 .

7. The metal film is made of aluminum or copper. The display device according to claim 5 .

8. Each of the filaments has a cross-sectional diameter of 0.05 mm to 1 mm. The display device according to claim 5 .

9. providing a display panel and a base layer of a metal film having a first surface and a second surface opposite to the first surface; forming a plurality of filaments on the first surface of the base layer, each of the filaments having a hook structure at an end, thereby forming a hook surface having a Velcro structure on the metal film; adhering the display panel to the second surface of the base layer; and providing the metal film consisting of the base layer and the plurality of filaments so as to support the display panel; and providing the display panel further includes providing a substrate; providing a display function layer on the substrate; providing a polarizing sheet on the display function layer; providing an adhesive layer between the substrate and the base layer, and connecting the substrate and the second surface of the base layer via the adhesive layer. A method for manufacturing a display device.

10. forming a plurality of the filaments on the first surface of the base layer, forming a plurality of the filaments on the first surface of the base layer by mechanical thread rolling; The mechanical thread rolling includes: placing the base layer on a surface treatment machine, the surface treatment machine including a plurality of protrusions; controlling the surface treatment machine to move along the base layer so that the protrusions come into contact with the base layer; controlling the surface treatment machine so that the protrusions penetrate the first surface of the base layer; and fixing the base layer and controlling the surface treatment machine to move along the first surface of the base layer to form the plurality of filaments on the first surface of the base layer. The method for manufacturing the display device according to claim 9 .

11. forming a plurality of the filaments on the first surface of the base layer, forming a patterned layer on the first surface of the base layer; removing a portion of the base layer not covered by the patterned layer such that a plurality of vertical filaments are formed on the first surface of the base layer; forming a plurality of the filaments on the first surface of the base layer by applying pressure to the plurality of the vertical filaments of the base layer such that the plurality of the vertical filaments are bent. The method for manufacturing the display device according to claim 9 .

12. the base layer of the metal film and the plurality of filaments are integrally formed; The method for manufacturing the display device according to claim 9 .

13. The metal film is made of aluminum or copper. The method for manufacturing the display device according to claim 9 .

14. Each of the filaments has a cross-sectional diameter of 0.05 mm to 1 mm. The method for manufacturing the display device according to claim 9 .

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