CN219780510U - Promote FPC structure of position flexibility of buckling - Google Patents
Promote FPC structure of position flexibility of buckling Download PDFInfo
- Publication number
- CN219780510U CN219780510U CN202321157708.9U CN202321157708U CN219780510U CN 219780510 U CN219780510 U CN 219780510U CN 202321157708 U CN202321157708 U CN 202321157708U CN 219780510 U CN219780510 U CN 219780510U
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- Prior art keywords
- layer
- bending
- fpc
- base material
- flexibility
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- 238000005452 bending Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 239000010410 layer Substances 0.000 abstract description 37
- 239000011241 protective layer Substances 0.000 abstract description 5
- 239000003292 glue Substances 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 abstract description 3
- 239000002585 base Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000012458 free base Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
Abstract
The utility model relates to the technical field of display modules, in particular to an FPC structure for improving flexibility of bending positions, which comprises a base material, wherein two side surfaces of the base material are respectively provided with a circuit layer, and an insulating protective layer is adhered on the circuit layer; and a bending part is arranged at one end of the base material, and an acrylic acid oligomer layer is coated between one end of the circuit layer, one end of the insulating protection layer and the bending part. The utility model improves the flexibility of the bending part and reduces the resilience force; the structural reliability is improved; when the bending radius reaches 0.5mm, the bending resilience force of the FPC can not separate the black-and-white glue at the corresponding position from the backlight frame, so that uneven display and backlight explosion are avoided, and the product quality is ensured.
Description
Technical Field
The utility model relates to the technical field of display modules, in particular to an FPC structure for improving flexibility of bending positions.
Background
The display module generally comprises the following components: backlight assembly, display assembly (including upper polaroid+LCD (display screen) +lower polaroid+IC (drive chip) +FPC (flexible circuit board)), CG (cover plate) or TP (touch control assembly). The backlight assembly further comprises: the light-emitting diode comprises a rubber-iron integrated frame, a reflecting sheet, a light guide plate, a film material (an upper light-increasing film, a lower light-increasing film and a diffusion film) and black double-sided shading adhesive. The assembly process of the display film group is briefly described as follows: (1) Firstly, assembling an upper polaroid, an LCD, a lower polaroid, an IC and an FPC into FOG; (2) The integrated frame of rubber iron, reflecting sheet, light guide plate, membrane material (upper intensifying film, lower intensifying film, diffusion film), black double-sided shading adhesive are assembled into backlight assembly, (3) CG, touch sensor, touch IC, touch FPC are assembled into TP, then FOG and CG/TP are assembled with backlight assembly again after laminating, after assembling, FPC is folded to the back and fixed, thus a complete display module is manufactured.
Because of space limitations, the FPC needs to be tightened 180 ° and then attached to the back of the module. As the whole display module is only less than 1.5mm and even thinner, the bending radius of the FPC is only about 0.5 mm. The traditional design is that PI protective films are arranged at the positions corresponding to bending positions on the FPC as far as possible, the widths of the positions corresponding to bending positions on the FPC are reduced, and the single-layer area is formed, so that bending resilience force of the FPC is reduced as far as possible. However, for display modules below 1.5mm, the bending resilience force of the bending part of the FPC according to the design still causes uneven display and hidden quality hazards such as backlight explosion.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the FPC structure for improving the flexibility of the bending position, improving the flexibility of the bending position and reducing the resilience force; the structural reliability is improved; when the bending radius reaches 0.5mm, the bending resilience force of the FPC can not separate the black-and-white glue at the corresponding position from the backlight frame, so that uneven display and backlight explosion are avoided, and the product quality is ensured.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides an FPC structure for improving flexibility of bending positions, which comprises a base material, wherein two side surfaces of the base material are respectively provided with a circuit layer, and an insulating protective layer is adhered on the circuit layer; and a bending part is arranged at one end of the base material, and an acrylic acid oligomer layer is coated between one end of the circuit layer, one end of the insulating protection layer and the bending part.
Preferably, the acrylic oligomer layer is a green oil layer.
Wherein, the substrate adopts a glue-free substrate.
The insulating protection layer is adhered to the circuit layer through an adhesive.
The utility model has the beneficial effects that:
compared with the FPC structure of the traditional display module, the PI protective film at the bending part is removed, the green oil layer is replaced for coating, and the flexibility of the bending part is improved and the resilience force is reduced through the arrangement of the green oil layer; the green oil layer can be used as a solder resist, and the PI material is replaced by adopting a mode of covering the green oil layer to protect the electrical circuit, so that the structural reliability is improved; furthermore, the glue-free base material is adopted, so that the flexibility of the FPC is improved; under the above-mentioned setting, improve the flexibility of FPC kink, reduce its resilience to realize that the flexibility of bending away of FPC can not make the black and white glue of corresponding position break away from backlight frame when buckling radius reaches 0.5mm, avoid causing display inequality and backlight burst lamp, thereby guarantee product quality.
Drawings
Fig. 1 is a schematic structural view of an FPC structure for improving flexibility of bending positions according to the present utility model.
The reference numerals in fig. 1 include:
1. a substrate; 2. a circuit layer; 3. an insulating protective layer; 4. bending parts; 5. an acrylic oligomer layer; 6. and (3) an adhesive.
Detailed Description
The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model. The present utility model will be described in detail below with reference to the accompanying drawings.
In the FPC structure for improving flexibility of bending positions, as shown in fig. 1, the FPC structure comprises a base material 1, wherein two side surfaces of the base material 1 are respectively provided with a circuit layer 2, and an insulating protection layer 3 is adhered on the circuit layer 2; one end of the base material 1 is provided with a bending part 4, and an acrylic acid oligomer layer 5 is coated between one end of the circuit layer 2 and one end of the insulating protection layer 3 and the bending part 4. Wherein, the substrate 1 adopts a non-adhesive substrate 1. Preferably, the acrylic oligomer layer 5 is a green oil layer; one end of the circuit layer 2 and one end of the insulating protective layer 3 are positioned at the edge of the bending part 4. Specifically, compared with the FPC structure of the traditional display module, the utility model has novel structure and ingenious design, removes the PI protective film at the bending part 4, replaces the PI protective film with a green oil layer for coating, improves the flexibility of the bending part 4 through the arrangement of the green oil layer, and reduces the resilience; the green oil layer can be used as a solder resist, and the PI material is replaced by adopting a mode of covering the green oil layer to protect the electrical circuit, so that the structural reliability is improved; further, the glue-free base material 1 is adopted, so that the flexibility of the FPC is improved; under the above-mentioned setting, improve the flexibility of FPC kink, reduce its resilience to realize that the flexibility of bending away of FPC can not make the black and white glue of corresponding position break away from backlight frame when buckling radius reaches 0.5mm, avoid causing display inequality and backlight burst lamp, thereby guarantee product quality.
In this embodiment, the insulating protection layer 3 and the circuit layer 2 are bonded by an adhesive 6. Specifically, in the above arrangement, the adhesion between the insulating protective layer 3 and the wiring layer 2 is realized, and the effect of protecting the wiring layer 2 is achieved.
The present utility model is not limited to the preferred embodiments, but is intended to be limited to the following description, and any modifications, equivalent changes and variations in light of the above-described embodiments will be apparent to those skilled in the art without departing from the scope of the present utility model.
Claims (4)
1. Promote FPC structure of bending position flexibility degree, its characterized in that: the circuit board comprises a base material, wherein two side surfaces of the base material are respectively provided with a circuit layer, and an insulating protection layer is bonded on the circuit layers; and a bending part is arranged at one end of the base material, and an acrylic acid oligomer layer is coated between one end of the circuit layer, one end of the insulating protection layer and the bending part.
2. The FPC structure for improving flexibility of bending position according to claim 1, wherein: the acrylic acid oligomer layer is a green oil layer.
3. The FPC structure for improving flexibility of bending position according to claim 1, wherein: the substrate adopts a glue-free substrate.
4. The FPC structure for improving flexibility of bending position according to claim 1, wherein: the insulating protection layer is adhered to the circuit layer through an adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321157708.9U CN219780510U (en) | 2023-05-12 | 2023-05-12 | Promote FPC structure of position flexibility of buckling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321157708.9U CN219780510U (en) | 2023-05-12 | 2023-05-12 | Promote FPC structure of position flexibility of buckling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219780510U true CN219780510U (en) | 2023-09-29 |
Family
ID=88106247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321157708.9U Active CN219780510U (en) | 2023-05-12 | 2023-05-12 | Promote FPC structure of position flexibility of buckling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219780510U (en) |
-
2023
- 2023-05-12 CN CN202321157708.9U patent/CN219780510U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240603 Address after: 518000 No. a, 1st floor, building 2, No. 8, Guangtian Road, Luotian community, Songgang street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN HONG'AN ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region after: China Address before: No. 291, Dalingshan Section, Houda Road, Dalingshan Town, Dongguan, Guangdong 523000 Patentee before: DONGGUAN DEPUTE ELECTRONICS CO.,LTD. Country or region before: China |
|
| TR01 | Transfer of patent right |