Products Lineup
FPC for FPD (flat panel displays) Produced by our R-to-R Large, slim TV panel wiring series
- Our extensive lineup of flexible PC boards uses a variety ofmaterials and configurations.
- These products have excellent wire bonding characteristics and are also highly resistant to migration.
Single-sided FPCs
Single-sided FPC standard specifications
| Type | Material | Thickness (microM) |
|---|---|---|
| Cover layer | Polyimide adhesive | 25, 50 35 |
| Base material | Rolled copper foil, Electrolytic copper foil |
18, 35 |
| Polyimide adhesive | 25, 50 20 |
|
| Heat sink | (For reference) | |
| Overall thickness | 123 to 190 |
Double-sided FPCs
Double-sided FPC standard specifications
| Type | Material | Thickness (microM) |
|---|---|---|
| Cover layer | Polyimide adhesive | 25, 50 35 |
| Base material | Cu-pating, Electrolytic copper foil |
15 18, 35 |
| Polyimide adhesive | 25, 50 20 |
|
| Cover layer | Polyimide adhesive | 25, 50 35 |
| Overall thickness | 251 to 360 |
Impedance matching FPCs
Optimum for high speed transmission and improved equipment performance
Along with the appearance of high speed transmission circuits in recent years, characteristic impedance is becoming increasingly important.
Oki Electric Cable can perform characteristic impedance matching by appropriately combining conductor width, distance between conductors, material thickness, and type of material.
Earth friendly FPCs
We offer environmentally friendly FPCs.
In recent years, we have been engaged in environmental issues in our overall lifestyle.
We have a lineup of low outgassing FPCs which meet RoHS and can be used even in a vacuum, as environmentally friendly products.
1. FPCs that meet RoHS
We now offer products made by gold plating and the use of lead-free solder instead of the conventional leaded solder. Particularly, we use our own facilities for gold plating, so we can control and guarantee the quality of the entire FPC process.
2. Liquid crystal polymer material FPCs
Liquid crystal polymer is a generic term for wholly aromatic polyester polymers.
Features
- Highfrequency electrical characteristics (low dielectric constant, low dielectric dissipation factor)
High speed transmission is possible - Water absorption resistance (approx. 40 times that of polyimide)
---Can be used in a location where it is exposed to water or moisture. - Low outgassing performance (0.03WVR%)
---Can be used in a vacuum. - Flame retardant, chemical resistance, etc.
Basic specifications
| Type | Material | Thickness µ > m |
|---|---|---|
| Cover layer | Liquid crystal | 25, 50 |
| Bonding sheet | 25 to 50 | |
| Copper foil | Electrolyte, rolled | 18, 35 |
| Base material | Liquid crystal | 25, 50 |
| Overall thickness | 93 to 185 |
Long FPCs
Light, multi-wiring module for large equipment
We can make FPCs10 m long without joints Particularly, these long flexible FPCs feature thinness, lightness and softness, making them suitable for multiple wiring in large equipment.
Because there are no joints, the FPC remains electrically stable in applications where it is flexed.
| Layerconfiguration | Single-sided FPCs |
|---|---|
| FPC length | to 10000mm |
| Layer thickness (flexible part) | 140µm (catalog value) |
| Base material (copper clad laminate) |
Copper foil 35µm Polyimide 25µm |
| Cover layer | Polyimide 35µm |
| Line/Space | 300/300µm |
| Hole diameter | 300µm |
| Surface finish | Ni-Au plating Chemical treatment |
| Rainforcing plate | Glass epoxy 1.6mm > Polyimide 125µm |
| Configuraion | 2 to 5 single-sided boards (pin connectorsoldered connections) |
| Bendability | At least 20 million times (Differs dependingupon the bending conditions) |
| UL | UL796, UL796F |
Multi-layer FPCs
Optimum for multi-wiring in light, short and small equipment
High function is being demanded along with the increasingthinness and compactness of equipment and products in recent years. Amulti-layer FPC can be wired in confined spaces. Because it is of a multi-layerconstruction, it is ideal for multi-wiring. Multi-layer FPCs can be produced invarious configurations.
Oki Electric Cable makes optimum proposals to customers fromseveral kinds of configuration patterns.
| Layerconfiguration | 4 layers |
|---|---|
| Overall thickness | > 250µm |
| Base material | Polyimide 2-layer material, 3-layer material |
| Cover layer | Polyimide Solder resist Line/space 75/75 µm |
| Hole diameter | > 300µm |
| Surface finish | Ni-Au plating Heat resistant preflux |
| UL | Possible |
Flex-rigid board
Integration of flexible PC and rigid PC board
We have combined the softness of the FPC with the mounting stability of a rigid PC board. the resulting connector-less assembly (the cost of components and the work of purchasing and managing them are rendered unnecessary) enables man-hours to be reduced.
Also, because the flex-rigid board is integrated by means of through holes, it features high electrical reliability.
| Configuration | 4layers Flex-rigid board Inner-layer: One double-sided FPC Surface-layer: Two single-sided rigid board |
|---|---|
| 6layers Flex-rigid board Inner-layer: Two double-sided FPC Surface-layer: Two single-sided rigid board |
|
| Max. dimensions | 210x445mm |
| Board thickness | 0.6t to 1.6t |
| Min. line width | 0.12mm |
| Space | 0.12mm |
| Min.hole diameter | φ0.3mm |
