CN217740101U

CN217740101U - Metal support with high rigidity for foldable flexible screen

Info

Publication number: CN217740101U
Application number: CN202221902675.1U
Authority: CN
Inventors: 韦东方
Original assignee: Weida Precision Electronics Nantong Co ltd
Current assignee: Weida Precision Electronics Nantong Co ltd
Priority date: 2022-07-23
Filing date: 2022-07-23
Publication date: 2022-11-04
Anticipated expiration: 2032-07-23

Abstract

The utility model provides a metal support piece that is used for collapsible flexible screen to have stronger rigidity, metal support piece includes at least one district of buckling, at least one it partly loses the hole district with two to be equipped with a through-hole district in the district of buckling, the through-hole district is located two partly lose between the hole district, be equipped with a plurality of through-holes in the through-hole district, partly lose the hole district and be equipped with a plurality of partly and lose the hole, when the flexible screen activity of buckling, the stress that metal support piece produced concentrate in the through-hole district. The metal supporting piece is provided with the through hole in the region with the most concentrated stress in the bending region, the half-etched holes are arranged in other regions of the bending region, the through hole is arranged at the position with the most concentrated stress, so that the metal supporting piece is prevented from being limited to perform bending movement by the stress generated when being bent, and the half-etched holes are arranged in other regions of the bending region, so that the overall rigidity of the metal supporting piece can be improved; in addition, the half-etching holes can reduce stress generated during bending and improve the flatness of the flexible screen.

Description

Metal support with high rigidity for foldable flexible screen

Technical Field

The utility model relates to a flexible screen support piece field especially relates to a metal support piece who is used for collapsible flexible screen to have stronger rigidity.

Background

The flexible screen electronic product meets the requirements of more and more people, and particularly, the mobile phone with the folding flexible screen is more and more popular with more and more people.

In the production process of the flexible screen, the flexible screen needs to be supported by a metal support member to increase the mechanical strength and flatness of the flexible screen. In order to reduce the stress generated when the metal support member is bent, a plurality of through holes are generally formed in the bending region.

In fact, the stress generated by the metal supporting parts when the flexible screen is bent is different, and the stress is most concentrated at the position with the largest bending angle.

At present, a plurality of through holes are often uniformly arranged in a bending area of an existing metal support, and although the bending movement of the metal support is not limited by stress generated during bending, the mechanical strength of the corresponding support is reduced, especially after bending for many times.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a metal support spare that is used for collapsible flexible screen to have stronger rigidity, this metal support spare only stress the most concentrated region set up the through-hole when buckling to solve above-mentioned technical problem.

In order to solve the technical problem, the utility model discloses a following technical scheme:

according to the utility model discloses a metal support piece that is used for collapsible flexible screen to have stronger rigidity, metal support piece includes at least one district of buckling, at least one be equipped with a through-hole district and two half etching hole district in the district of buckling, the through-hole district is located two between the half etching hole district, be equipped with a plurality of through-holes in the through-hole district, half etching hole district is equipped with a plurality of half etching holes, when the flexible screen activity of buckling, the stress that metal support piece produced concentrate in the through-hole district.

Further, the ratio of the area of the through hole region to the area of the half etching hole region ranges from 1:2 to 1.5:2.

further, the length directions of the through hole and the half etching hole are parallel to the bending direction of the bending area.

Further, the ratio of the depth of the half-etching hole to the thickness of the metal support ranges from 1.

Furthermore, the metal support further comprises two unbendable regions, and the two unbendable regions are respectively located on two sides of the half-etching hole region.

Furthermore, the two sides of the metal supporting part comprise a first side and a second side, the bending area bends towards the first side, the half-etching hole faces towards the second side, and the flexible screen is connected to the first side of the metal supporting part.

Further, the metal support has a thickness ranging from 0.05m to 0.45mm.

Further, the half-etching holes and/or the through holes are in a strip shape, an oval shape or an arc shape.

Furthermore, the plurality of through holes and the plurality of half etching holes in the bending area are uniformly distributed.

Furthermore, the through holes are distributed in a staggered mode, and the half etching holes are distributed in a staggered mode.

The above technical scheme of the utility model one of following beneficial effect has at least:

the utility model discloses a metal support piece with stronger rigidity for foldable flexible screen, this metal support piece sets up the through-hole through the region that the stress is most concentrated in the bending zone, sets up half corrosion hole in other regions of bending zone, set up the through-hole in the position that the stress is most concentrated and avoid the metal support piece to buckle the stress that produces to limit it and carry out the activity of buckling, set up half corrosion hole in other regions of bending zone and can improve metal support piece's overall rigidity; in addition, the half-etched hole can reduce stress generated during bending and improve the flatness of the flexible screen.

Drawings

Fig. 1 is a schematic plan view of a metal supporting member according to an embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a schematic structural diagram of a bending state of a metal support applied to a foldable flexible screen according to an embodiment of the present invention.

Reference numerals:

100. a metal support; 20. a bending zone; 21. a half-etched hole region; 211. half etching holes; 22. a through hole region; 221. a through hole; 10. a non-bendable region; 200. a flexible screen.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are some, not all embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the present invention, belong to the protection scope of the present invention.

In the prior art, a plurality of through holes are uniformly formed in a region, needing to be bent, of a metal supporting part for supporting a flexible screen, stress generated when the metal supporting part is bent at each position point in the region needing to be bent is different actually, and the plurality of through holes are formed in the bending region to reduce the mechanical strength of the metal supporting part. In addition, in order to ensure the mechanical strength of the metal support, a thicker metal support is selected, which undoubtedly increases the overall thickness of the electronic device.

In view of the above technical problems, an embodiment of the present invention provides a metal supporting member with strong rigidity for a foldable flexible screen, where the metal supporting member 100 only has a through hole 221 at a position where the stress of the bending area 20 is most concentrated, and has a half-etching hole 211 at other areas of the bending area 20, the metal supporting member 100 can not only improve the overall mechanical strength thereof, but also can avoid the stress generated by the metal supporting member 100 during bending from limiting the bending movement thereof; in addition, based on the high mechanical strength of the metal support 100, the thickness of the metal support 100 can be reduced to reduce the overall thickness of the electronic device, thereby further improving the experience of the user.

The material of the metal support member 100 includes stainless steel, titanium alloy, copper material, etc., and the embodiment of the present invention is not limited specifically. The through hole 221 and the half-etching hole 211 on the metal support 100 are formed by etching process, and the through hole 221 can be etched by masking etching liquid on the upper and lower sides of the support in the film exposing and developing process. For half-etching holes 211 masked on the upper or lower side of the support during the film exposure development, only a single side of the etching solution is etchable, i.e., the etching solution etches only a single side of the support during the etching process to form half-etching holes 211, while the depth of the half-etching holes 211 is adjusted based on various parameters during the etching process, such as: concentration of etching solution, etching time, etc.

Specifically, as shown in fig. 1 to 3, an embodiment of the present invention provides a metal supporting member 100 for a foldable flexible screen 200, where the metal supporting member 100 includes at least one bending area 20, at least one bending area 20 is provided with a through hole area 22 and two half etching hole areas 21, the through hole area 22 is located between the two half etching hole areas 21, the through hole area 22 is provided with a plurality of through holes 221, the half etching hole area 21 is provided with a plurality of half etching holes 211, and when the flexible screen 200 is bent, stress generated by the metal supporting member 100 is concentrated on the through hole area 22.

During the bending process of the metal support 100, the stress generated at the position where the bending angle is larger is also larger, so that the middle position of the bending region 20 when the metal support 100 is bent is the position where the bending angle is the largest, that is, the stress is the largest. The farther away from the center within the bending zone 20, the less stress it will generate during bending. Therefore, in the embodiment of the present invention, the plurality of through holes 221 are disposed in the through hole region 22, which is the region with the largest bending angle, and the plurality of half etching holes 211 are disposed in the half etching hole region 21, which is the region with the relatively smaller bending angle in the bending region 20. That is, the through holes 221 and the half etching holes 211 capable of limiting different stress levels are correspondingly disposed in the bending region 20 according to the stress level generated during bending, so that the mechanical strength of the metal supporting member 100 can be improved, and the stress limit bending movement generated during bending can be avoided.

In one embodiment, as shown in fig. 1 and 2, the ratio of the area of the through hole region 22 to the area of the half via region 21 ranges from 1:2 to 1.5:2. the ratio within this range can ensure the mechanical strength of the metal support 100 and prevent the bending movement from being restricted by the stress generated during bending.

When the ratio of the area of the via region 22 to the area of the half-etched hole region 21 is less than 1. When the ratio of the area of the through-hole region 22 to the area of the half-etched hole region 21 is greater than 1.5.

In one embodiment, the length directions of the through holes 221 and the half etching holes 211 are parallel to the bending direction of the bending region 20. The length directions of the through holes 221 and the half etching holes 211 are parallel to the bending direction of the bending area 20, so that the bending area 20 can perform bending activity, and the stress generated when the supporting member is bent is reduced.

In one embodiment, the ratio of the depth of the half-etching hole 211 to the thickness of the metal support 100 is in a range of 1. The depth of the half-etching hole 211 and the thickness of the support can ensure the mechanical strength of the support in the proportion range, and the limitation of the bending movement caused by the stress generated in the bending process of the support can be avoided.

When the ratio of the depth of the half-etching hole 211 to the thickness of the support exceeds 1.3, there is a case where the mechanical strength of the support is insufficient. When the ratio of the depth of the half-etched hole 211 to the thickness of the support member is less than 1.

In an embodiment, as shown in fig. 1, the metal supporting component 100 further includes two non-bendable regions 10, and the two non-bendable regions 10 are respectively located at two sides of the half-etched hole region 21. The two non-bendable regions 10 are respectively located at two sides of the two half-etched hole regions 21 to improve the overall mechanical strength of the metal support 100 and increase the bending angle of the bending region 20.

In one embodiment, the two sides of the metal support 100 include a first side and a second side, the bending region 20 is bent toward the first side, the half-etched hole 211 is bent toward the second side, and the flexible screen 200 is connected to the first side of the metal support 100. The flexible screen 200 is attached to a first side of the support member with the half-etched holes 211 facing a second side of the support member, i.e., the support member contacting the flexible screen 200 has fewer holes, improving the flatness of the flexible screen 200.

In one embodiment, the thickness of the metal support 100 ranges from 0.05m to 0.45mm. The metal support 100 having this thickness range can not only ensure its mechanical strength, but also support the flexible screen 200.

When the thickness of the support member is less than 0.05mm, the support member that is too thin is easily deformed and is weak in mechanical strength to support the flexible screen 200. When the thickness of support piece is greater than 0.45mm, too thick support piece has stronger mechanical strength, but the stress that produces when support piece buckles is great, restricts support piece's the activity of buckling, reduces user experience.

In one embodiment, the half etching holes 211 and/or the through holes 221 are in the shape of a strip, an ellipse, or an arc.

That is, the shapes of the half-etching holes 211 and the through holes 221 may be various, and may be a strip shape, an oval shape, an arc shape, or other shapes.

In one embodiment, as shown in fig. 2, the plurality of through holes 221 and the plurality of half etching holes 211 in the bending region 20 are uniformly distributed. The uniformly distributed through holes 221 and half-etched holes 211 can improve the flatness of the metal support 100 for supporting the flexible screen 200.

Further, as shown in fig. 2, the plurality of through holes 221 are distributed in a staggered manner, and the plurality of half etching holes 211 are distributed in a staggered manner. The staggered arrangement of the through holes 221 and the half etching holes 211 can improve the mechanical strength of the metal support 100.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The metal support piece with high rigidity for the foldable flexible screen is characterized by comprising at least one bending area, wherein a through hole area and two half-etching hole areas are arranged in at least one bending area, the through hole area is positioned between the two half-etching hole areas, a plurality of through holes are arranged in the through hole area, the half-etching hole areas are provided with a plurality of half-etching holes, and when the flexible screen is bent, stress generated by the metal support piece is concentrated in the through hole area.

2. A more rigid metal support for a foldable flexible screen according to claim 1, wherein the ratio of the area of the through-hole region to the area of the half-etched-hole region is in the range of 1:2 to 1.5:2.

3. a relatively rigid metal support for a foldable flexible screen according to claim 1, wherein the length direction of said through holes and half-etched holes is parallel to the bending direction of said bending region.

4. A more rigid metal support for a foldable flexible screen according to claim 1, wherein the ratio of the depth of said half-etched hole to the thickness of said metal support is in the range of 1.

5. A more rigid metal support for a foldable flexible screen according to claim 1, wherein said metal support further comprises two non-bendable regions, one on each side of said half-etched hole region.

6. A more rigid metal support for a foldable flexible screen according to claim 1, wherein said metal support has two sides comprising a first side and a second side, said bending region is bent towards said first side, said half-etched hole is directed towards said second side, and a flexible screen is attached to said first side of said metal support.

7. A relatively rigid metal support for a foldable flexible screen according to claim 1, characterized in that the thickness of the metal support is in the range of 0.05mm to 0.45mm.

8. A more rigid metal support for a foldable flexible screen according to claim 1, wherein said half-etched holes and/or said through holes are in the shape of strips, or oval, or arc.

9. A more rigid metal support for a foldable flexible screen according to claim 1, wherein said plurality of through holes and said plurality of half-etched holes in said inflection zones are evenly distributed.

10. A more rigid metal support for a foldable flexible screen according to claim 1, wherein a plurality of said through holes are staggered and a plurality of said half-etched holes are staggered.