لوحة الدوائر المرنة FPC FPC: دائرة مطبوعة مرنة باللغة الإنجليزية ، ومعناها الصيني هو لوحة دوائر مطبوعة مرنة ، يشار إليها باسم لوحة مرنة. وهي مصنوعة من أنماط الدوائر الموصلة على سطح الركيزة المرنة باستخدام عمليات نقل نمط التصوير البصري وعمليات الحفر. يتم توصيل الطبقات السطحية والداخلية للوحات الدائرة على الوجهين والمتعدد الطبقات كهربائيًا ببعضها البعض من خلال الثقوب المعدنية. سطح نمط الدائرة محمي ومعزول بطبقة PI وطبقة صمغ.

Mainly divided into single panel, hollow panel, double panel, multi-layer panel, soft and hard combination board.

Features of FPC flexible circuit board

Short: short assembly hours

All lines are configured, eliminating the need to connect redundant cables;

Small: smaller than PCB (hard board)

Can effectively reduce the product volume and increase the convenience of carrying;

Light: Lighter than PCB (hard board)

Can reduce the weight of the final product;

Thin: thinner than PCB (hard board)

It can improve the softness and strengthen the assembly of three-dimensional space in the limited space.

Advantages of flexible circuit boards

Flexible printed circuit boards are printed circuits made of flexible insulating substrates, and have many advantages that rigid printed circuit boards do not have:

It can be freely bent, wound and folded, can be arranged arbitrarily according to the space layout requirements, and can be arbitrarily moved and stretched in three dimensions, so as to achieve the integration of component assembly and wire connection;

The use of FPC can greatly reduce the volume and weight of electronic products, which is suitable for the development of electronic products in the direction of high density, miniaturization and high reliability. Therefore, FPC has been widely used in aerospace, military, mobile communications, laptop computers, computer peripherals, PDAs, digital cameras and other fields or products;

FPC also has the advantages of good heat dissipation and solderability, easy assembly, and low overall cost. The design of the combination of soft and hard also makes up for the slight deficiency of the flexible substrate in the component carrying capacity.

Other auxiliary materials

(1) Pure glue: This adhesive film is a thermosetting acrylic adhesive film composed of protective paper / release film and a layer of adhesive. It is mainly used for layered boards, soft and hard bonding boards, and FR-4 / steel sheet reinforcement board, play a bonding role.

(2) Electromagnetic protective film: pasted on the board to play a shielding role.

(3) Pure copper foil: only composed of copper foil, mainly used for hollow board production.

Substrate

With plastic substrate

هناك ثلاثة مكونات رئيسية لمادة القاعدة اللاصقة: رقائق النحاس ، والغراء ، و PI. هناك نوعان من المواد الأساسية أحادية الجانب والمواد الأساسية على الوجهين. الركيزة على الوجهين.

الركيزة غير الغراء

الركيزة غير اللاصقة عبارة عن ركيزة بدون طبقة لاصقة ، وهي أقل من الركيزة اللاصقة العادية ، وتتكون الطبقة اللاصقة الوسطى فقط من رقائق النحاس و PI ، وهي أرق من الركيزة اللاصقة ، واستقرار أفضل للأبعاد ، ومقاومة أعلى للحرارة ، مقاومة الانحناء العالية ، المقاومة الكيميائية الأفضل وغيرها من المزايا ، تم استخدامها الآن على نطاق واسع.

Copper foil: At present, the thickness of commonly used copper foil has the following specifications, 1OZ, 1 / 2OZ, 1 / 3OZ, now thinner copper foil with a thickness of 1 / 4OZ, but currently this kind of material is already used in China (Line width and distance are 0.05MM and below) products. With the increasing requirements of customers, materials of this specification will be widely used in the future.

Cover film

It is mainly composed of three parts: release paper, glue, and PI, and only two parts, glue and PI, are left on the product. The release paper will be torn off during the production process and no longer used (its role protects the foreign matter on the glue ).

Types of FPC

There are 6 types of FPC types:

(1) Single panel: only one side has a line.

(2) Double panel: There are lines on both sides.

(3) لوحة مجوفة: تُعرف أيضًا باسم لوحة النافذة (نافذة الإصبع).

(4) لوح ذو طبقات: خطان (منفصلان).

(5) لوحة متعددة الطبقات: خطان أو أكثر.

(6) اللوح الناعم والصلب: منتج يجمع بين اللوح الناعم واللوح الصلب.