CN213026434U - Radio frequency transmission line - Google Patents
Radio frequency transmission line Download PDFInfo
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- CN213026434U CN213026434U CN202021588074.9U CN202021588074U CN213026434U CN 213026434 U CN213026434 U CN 213026434U CN 202021588074 U CN202021588074 U CN 202021588074U CN 213026434 U CN213026434 U CN 213026434U
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- transmission line
- radio frequency
- substrate
- bending
- frequency transmission
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Abstract
The utility model discloses a radio frequency transmission line, including the transmission line layer, be equipped with the portion of bending and lie in the portion of bending of the non-at the portion of bending both ends respectively on the transmission line layer, still include first substrate and second substrate, be equipped with first substrate on the both sides that the transmission line layer is relative respectively, first substrate is located the portion of bending, still is equipped with the second substrate respectively on the both sides that the transmission line layer is relative, and the second substrate is located the non-portion of bending, and the thickness of first substrate is less than the thickness of second substrate. When the folding display screen of mobile terminal equipment is folded, the bending part of the radio frequency transmission line is deformed, because the thickness of the bending part is smaller, the deformation of the bending part is small, the extrusion or tensile stress generated on the bending part is greatly reduced, the stress is uniformly dispersed, the bending performance of the radio frequency transmission line is improved, the folding times of the radio frequency transmission line are greatly promoted, the service life of the mobile terminal with the folding display screen is prolonged, and the times of replacing the radio frequency transmission line are reduced.
Description
Technical Field
The utility model relates to a transmission line technical field especially relates to a radio frequency transmission line.
Background
In recent years, mobile terminal equipment adopting a folding screen appears in the market, such as a folding screen mobile phone, a folding screen tablet computer, a folding screen smart watch and the like, the existing radio frequency transmission line for connecting the folding part of the screen in the mobile terminal is consistent in overall thickness and can be bent for a few times, the use requirement of 10 ten thousand times or 20 ten thousand times cannot be met, the service life of the mobile terminal with the folding screen is short, the radio frequency transmission line needs to be replaced after being used for a period of time, troubles are brought to consumers, and therefore the radio frequency transmission line resistant to bending is needed to prolong the service life of the mobile terminal with the folding screen.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a bend resistant radio frequency transmission line is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a radio frequency transmission line, includes the transmission line layer, be equipped with the portion of bending on the transmission line layer and be located respectively the portion of bending of the non at the portion both ends of bending still includes first substrate and second substrate, be equipped with respectively on the relative both sides in transmission line layer first substrate, first substrate is located bend in the portion, still be equipped with respectively on the relative both sides in transmission line layer the second substrate, the second substrate is located non-bend in the portion, the thickness of first substrate is less than the thickness of second substrate.
Further, the first substrate is symmetrically arranged relative to the transmission line layer.
Further, the second substrate is symmetrically arranged relative to the transmission line layer.
Further, the first substrate and the second substrate are integrally formed.
Further, the first base material and the second base material are made of different materials.
Furthermore, a notch for avoiding the first base material is formed in the second base material, and the first base material extends into the notch.
Further, the first substrate is PI or LCP.
Further, the transmission line layer comprises a first grounding line, a radio frequency line and a second grounding line which are arranged at intervals in sequence.
Furthermore, a copper foil layer is arranged on one surface, far away from the transmission line layer, of the second substrate.
The beneficial effects of the utility model reside in that: the utility model provides a radio frequency transmission line has adopted the portion of bending and has set up the design at the non-portion of bending at the portion of bending both ends, the substrate thickness of the portion of bending is less than the substrate thickness of the non-portion of bending, when the folding display screen of mobile terminal equipment is folded, the deformation takes place for the portion of bending of radio frequency transmission line, because the thickness of the portion of bending is less, the deformation that takes place when the portion of bending is bent is little, reduce the extrusion or the tensile stress that produces in the portion of bending by a wide margin, make stress homodisperse, the bending performance of radio frequency transmission line has been improved, the folding number of times of radio frequency transmission line has been promoted greatly, and then the extension has the life of the mobile terminal of folding display screen.
Drawings
Fig. 1 is a schematic structural diagram of a radio frequency transmission line according to a first embodiment of the present invention;
fig. 2 is a cross-sectional view of a non-bending portion in a radio frequency transmission line according to a first embodiment of the present invention;
fig. 3 is a cross-sectional view of a bending portion in a radio frequency transmission line according to a first embodiment of the present invention;
fig. 4 is a cross-sectional view of a radio frequency transmission line according to a first embodiment of the present invention;
fig. 5 is a cross-sectional view of a radio frequency transmission line according to a second embodiment of the present invention.
Description of reference numerals:
1. a transmission line layer; 11. a first ground line; 12. a radio frequency line; 13. a second ground line; 2. a bending part; 21. a first substrate; 3. a non-bent portion; 31. a second substrate; 32. a notch; 4. and a copper foil layer.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: the design of the bending part and the non-bending parts arranged at two ends of the bending part is adopted, and the thickness of the base material of the bending part is smaller than that of the base material of the non-bending part.
Referring to fig. 1 to 5, a radio frequency transmission line includes a transmission line layer 1, a bending portion 2 and non-bending portions 3 respectively located at two ends of the bending portion 2 are disposed on the transmission line layer 1, and further includes a first substrate 21 and a second substrate 31, the first substrate 21 is disposed on two opposite sides of the transmission line layer 1, the first substrate 21 is located in the bending portion 2, the second substrate 31 is disposed on two opposite sides of the transmission line layer 1, the second substrate 31 is located in the non-bending portions 3, and a thickness of the first substrate 21 is smaller than a thickness of the second substrate 31.
The utility model discloses a structural principle brief follows as follows: the design of the bending part 2 and the non-bending part 3 arranged at the two ends of the bending part 2 is adopted, the substrate thickness of the bending part 2 is smaller than that of the non-bending part 3, when the folding display screen of the mobile terminal device is folded, the bending part 2 of the radio frequency transmission line deforms, because the thickness of the bending part 2 is smaller, the deformation generated when the bending part 2 is bent is small, the extrusion or tensile stress generated on the bending part 2 is greatly reduced, and the stress is uniformly dispersed.
From the above description, the beneficial effects of the present invention are: the bending performance of the radio frequency transmission line is improved, the folding times of the radio frequency transmission line are greatly improved, the service life of the mobile terminal with the folding display screen is prolonged, and the times of replacing the radio frequency transmission line are reduced.
Further, the first substrate 21 is symmetrically disposed with respect to the transmission line layer 1.
Further, the second substrate 31 is symmetrically disposed with respect to the transmission line layer 1.
According to the description, the whole radio frequency transmission line is symmetrical along the transmission line layer 1, so that stress concentration generated when the bending part 2 is bent is further reduced, stress is uniformly dispersed, the bending performance of the radio frequency transmission line is improved, and the service life of the radio frequency transmission line is prolonged.
Further, the first base material 21 and the second base material 31 are integrally formed.
As can be seen from the above description, the first substrate 21 and the second substrate 31 are integrally formed, so that the rf transmission line has a simple overall structure, the production difficulty is reduced, and the rf transmission line is convenient to manufacture.
Further, the first base material 21 and the second base material 31 are made of different materials.
Further, a notch 32 is formed in the second substrate 31 to avoid the first substrate 21, and the first substrate 21 extends into the notch 32.
As can be seen from the above description, the first substrate 21 and the second substrate 31 are made of different materials, and the first substrate 21 is embedded in the second substrate 31, so that the rf transmission line has a stable overall structure, and the second substrate 31 can be made of a material with a lower cost, thereby reducing the production cost of the rf transmission line.
Further, the first substrate 21 is PI or LCP.
As can be seen from the above description, the first substrate 21 is made of a material with strong bending capability, so that the rf transmission line can be stably connected during multiple bending processes, and the durability of the rf transmission line can be improved.
Further, the transmission line layer 1 includes a first ground line 11, a radio frequency line 12 and a second ground line 13, which are sequentially arranged at intervals.
As can be seen from the above description, the transmission line layer 1 is conducted through the radio frequency line 12, and meanwhile, the ground lines are respectively disposed on two sides of the radio frequency line 12 to improve the shielding performance of the radio frequency transmission line.
Further, a copper foil layer 4 is arranged on one side of the second substrate 31 far away from the transmission line layer 1.
As can be seen from the above description, the copper foil layer 4 is further disposed on the surface of the second substrate 31, and the copper foil layer 4 is grounded to shield the inside of the rf transmission line and reduce the influence of the external environment on the rf transmission line.
Example one
Referring to fig. 1 to 4, a first embodiment of the present invention is: the utility model provides a radio frequency transmission line, includes transmission line layer 1, be equipped with the portion of bending 2 on the transmission line layer 1, the both ends of the portion of bending 2 are equipped with non-portion of bending 3 respectively, work as when the radio frequency transmission line is bent, the portion of bending 2 takes place to deform, non-portion of bending 3 does not produce deformation.
As shown in fig. 1 to 3, the radio frequency transmission line further includes a first substrate 21 and a second substrate 31, the first substrate 21 is located on two opposite sides of the transmission line layer 1, the first substrate 21 is located in the bending portion 2, the second substrate 31 is located on two opposite sides of the transmission line layer 1, the second substrate 31 is located in the non-bending portion 3, two ends of the first substrate 21 are respectively connected to the second substrate 31, the thickness of the first substrate 21 is smaller than that of the second substrate 31, when the radio frequency transmission line is bent, the first substrate 21 is deformed, and due to the smaller thickness of the first substrate 21, the extrusion and tensile stresses at the positions where the deformation occurs are greatly reduced, so that the generated stresses are uniformly dispersed, and the bending performance of the radio frequency transmission line is improved while the performance of the radio frequency transmission line is ensured, the number of times the radio frequency transmission line can be bent is greatly increased. Optionally, the first base material 21 may be made of a material with strong bending resistance, such as PI or LCP, so as to ensure that the first substrate has good bending performance.
Further, first substrate 21 is followed transmission line layer 1 symmetry sets up, second substrate 31 is followed transmission line layer 1 symmetry sets up, makes the whole axisymmetric that is of radio frequency transmission line, and then makes the stress dispersion that the radio frequency transmission line produced when buckling is more even, improves by a wide margin the bending performance of radio frequency transmission line, this embodiment provides the collapsible number of times of radio frequency transmission line can reach 20-30 ten thousand times, has satisfied the mobile terminal's that has collapsible display screen in the market user demand, has prolonged the life of radio frequency transmission line reduces among the user's the mobile terminal the number of times of radio frequency transmission line has improved user experience.
In this embodiment, the second substrate 31 is far away from be equipped with copper foil layer 4 on the one side of transmission line layer 1, the upper and lower two sides of radio frequency transmission line all are equipped with copper foil layer 4, copper foil layer 4 ground connection improves with this the shielding property of radio frequency transmission line reduces external environment to the influence of radio frequency transmission line. The transmission line layer 1 comprises a first grounding line 11, a radio frequency line 12 and a second radio frequency line 12 which are arranged at intervals, the radio frequency line 12 is arranged between the first grounding line 11 and the second grounding line 13, and the first grounding line 11 and the second grounding line 13 are respectively arranged close to two sides of the radio frequency transmission line, so that the shielding performance of the radio frequency transmission line is further improved, and the radio frequency transmission line is ensured to stably transmit radio frequency models.
As shown in fig. 4, in the embodiment, the first substrate 21 and the second substrate 31 are made of the same material, and the first substrate 21 and the second substrate 31 are integrally formed, which greatly facilitates the production and assembly of the rf transmission line and improves the production efficiency of the rf transmission line.
Example two
Referring to fig. 5, another technical solution proposed in the second embodiment of the present invention is based on the first embodiment and is different from the first embodiment only in the structure and material of the first base material 21 and the second base material 31, in this embodiment, a notch 32 is formed in the second base material 31 to avoid the first base material 21, the first base material 21 extends into the second base material 31 to embed the first base material 21 into the second base material 31, so that the first base material 21 and the second base material 31 are stably connected to each other, and it is ensured that the first base material 21 does not separate from the second base material 31 when the first base material 21 is bent. In this embodiment, the first base material 21 and the second base material 31 are made of different materials, wherein the first base material 21 is made of a material with strong bending resistance, and the second base material 31 is made of a common material with lower cost, so as to reduce the production cost of the radio frequency transmission line.
To sum up, the utility model provides a radio frequency transmission line bending performance is strong, has improved the number of times that the radio frequency transmission line can buckle by a wide margin when guaranteeing radio frequency transmission performance, prolongs the life of radio frequency transmission line, has satisfied the user demand of the mobile terminal equipment who has folding screen.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (9)
1. A radio frequency transmission line, characterized by: the bending device comprises a transmission line layer, wherein bending parts and non-bending parts located at two ends of the bending parts are arranged on the transmission line layer, the bending device further comprises a first base material and a second base material, the first base material is arranged on two opposite sides of the transmission line layer respectively, the first base material is located in the bending parts, the second base material is arranged on two opposite sides of the transmission line layer respectively, the second base material is located in the non-bending parts, and the thickness of the first base material is smaller than that of the second base material.
2. The radio frequency transmission line of claim 1, wherein: the first substrate is symmetrically disposed with respect to the transmission line layer.
3. The radio frequency transmission line of claim 1, wherein: the second substrate is symmetrically disposed with respect to the transmission line layer.
4. The radio frequency transmission line of claim 1, wherein: the first substrate and the second substrate are integrally formed.
5. The radio frequency transmission line of claim 1, wherein: the first base material and the second base material are made of different materials.
6. The radio frequency transmission line of claim 5, wherein: the second base material is provided with a notch for avoiding the first base material, and the first base material extends into the notch.
7. The radio frequency transmission line of claim 1, wherein: the first substrate is PI or LCP.
8. The radio frequency transmission line of claim 1, wherein: the transmission line layer comprises a first grounding line, a radio frequency line and a second grounding line which are arranged at intervals in sequence.
9. The radio frequency transmission line of claim 1, wherein: and a copper foil layer is arranged on one surface of the second substrate, which is far away from the transmission line layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021588074.9U CN213026434U (en) | 2020-08-04 | 2020-08-04 | Radio frequency transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021588074.9U CN213026434U (en) | 2020-08-04 | 2020-08-04 | Radio frequency transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213026434U true CN213026434U (en) | 2021-04-20 |
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ID=75463819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021588074.9U Active CN213026434U (en) | 2020-08-04 | 2020-08-04 | Radio frequency transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213026434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114980494A (en) * | 2022-07-12 | 2022-08-30 | Oppo广东移动通信有限公司 | Flexible circuit board and foldable electronic equipment |
-
2020
- 2020-08-04 CN CN202021588074.9U patent/CN213026434U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114980494A (en) * | 2022-07-12 | 2022-08-30 | Oppo广东移动通信有限公司 | Flexible circuit board and foldable electronic equipment |
| CN114980494B (en) * | 2022-07-12 | 2024-04-02 | Oppo广东移动通信有限公司 | Flexible circuit board and foldable electronic equipment |
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