Flexible Printed Circuit

JESEN specializes in the manufacturing and design of flat flexible cable, flex, rigid flex and flexible circuits. We have a wide range of construction material for the manufacturing of our line of flexible circuits to meet customer application requirements. Our flex circuit products include:
•Flexible Printed
•Flat Flexible Cable
•Rigid Flex

FPCs and FFCs have several advantages in many applications:

• Tightly assembled electronic packages, where electrical connections are required in 3 axes, such as cameras (static application).
• Electrical connections where the assembly is required to flex during its normal use, such as folding cell phones (dynamic application).
• Electrical connections between sub-assemblies to replace wire harnesses, which are heavier and bulkier, such as in cars, rockets and satellites.
• Electrical connections where board thickness or space constraints are driving factors.
• provide the flexiable service for OEM & ODM orders

http://www.jesen.com.cn/en/FPC.asp

Jesen pcb Certificate

• 
  GB/T 24001-2004

• CQC

  
  GB4943.1-2011

• ISO/ TS16949:2009

  
  IATF21097-0126417

• ISO 9001:2008

  
  GB/T 19001-2008

Quality Control System	PPAP
IQC (Incoming Quality Control)	Material inspection
IPQC (In Process Quality Control)	Operation cycle and condition, Line width, Thickness, Dimensional, Registration and others
FQC (Final Quality Control)	Construction, Thermal strength
OQC (Out-going Quality Control)	Surface, Thickness, Stamp and others
Specification Reference	IPC-TM-650 IPC-A-600 IPC-6012

Quality Management

JESEN strives to provide superior quality, professional support, value-added materials and advanced manufacturing service to the global electronics industry. With integrity, honesty and continuous innovation, JESEN's commitment to total quality management is founded in client's requirements. Each employee is expected to achieve his or her tasks the first time in accordance with the quality objectives and our impetus for continuous improvement.

Quality Policy

• Improve continuously
• Entire personnel participate
• Take guest as senior
• Get to the root of the matter

Environment

For Jesen Co.,Ltd. environmental responsibility means far more than being “green” or selling green products. We view it as connected to every aspect of our business, from the manufacture of our circuits to how they are packaged and shipped to our customers.
As a manufacturer, we have the potential to make a difference on critical environmental issues, such as saving energy and combating climate change. Being environmentally responsible also supports our success as a company. We believe that it allows us to innovate, create value for our business, and meet the expectations of our customers, employees and society.

Fact:

More greenhouse gases (GHG) lead to climate change, with melting ice caps and glaciers causing rising sea levels and altering precipitation.

Impact:

To help mitigate climate change, Jesen Co.,Ltd is reducing its GHG emissions and environmental footprint, through energy efficiency, conservation measures and waste reduction.http://www.jesen.com.cn/en/certificate-jesen.asp

What is Rigid-Flex printed circuit

What is Rigid-Flex printed circuit

A Rigid-Flex Printed Circuit could be defined as"a printed circuit device which has areas of rigid and flexible dielectrics with coextensive conductors throughout and interconnected by plated-through-hole(PTH)". The most common type of Rigid-Flex consists of a rigid printed circuit board(PCB) with flexible appendages extending and terminating at connectors. The rigid sections serve as strain reliefs, stiffeners and provide selective support for components; While the flex areas serve as an interconnection assembly.
Rigid-flex is different from a flexible circuit with an added stiffener. Rigid-flex incorporates plated through-holes that extend through the entire rigid section, there are challenges to create a robust and reliable plated through-hole interconnect which like a rigid board. As with rigid boards, we can also incorporate microvias using HDI process technologies to take advantage of today's most advanced packaging components.
The flexible sections typically do not have plated through-holes(PTHs) to avoid reducing flexibility. However, some designs may require "sub laminations" with plated through-holes or microvias. Another design may have inner layers that terminate with plated through-holes for receiving soldered connectors. Obviously, these requirements will add complexity to the design.

Copper Foil Type

The preferred copper foil for flex circuits is a wrought rolled annealed . This copper has excellent ductility and elongation properties and offers:
High resistance to cracking during flexing
High resistance to foil fractures in PTHs during thermal exposure.

Covercoat

A preferred choice with a proven history would be DuPont Pyralux LF. Acrylic adhesive is coated onto a polyimide dielectric film (DuPont Kapton) in a B-stage form. For rigid-flex manufacturing and long-term service life, the material has the following desirable properties:
High bond strength to treated copper surfaces
9-10 lbs./in. (maintains value after solder)
Dielectric strength >3000 volts/mil
Dielectric constant = 3.5
Passes 10-second solder float at 288oC
Passes MIL-P-50884 qualification of 100,000 cycles
Most PCB chemicals have negligible effect on material
Good electrical properties
Good thermal properties
Good flex endurance capability
Good chemical resistance

Rigid Metal-Clad Laminates

Generally, two resin systems (epoxy and polyimide) are used for rigid copper clad laminates. These materials are generally referred to as:
For epoxy resin systems (most common): IPC-4101/21, /24, /26, /28
For polyimide resin systems: IPC-4101/40, /41, /42 (/41 preferred)

http://www.jesen.com.cn/en/RFC-Definition.asp