• We recently switched our forum platform. If you experience any issues please email support@crystalfontz.com

a question about FPC connector

Bitman72

New member
Hello.

I've post this message to the Tech Support but there is no answer.

We plan to by the display CFAF240320K-T-TS.
Can you let me know where can I by a FPC connector for this module?

Thank you.
Looking for additional LCD resources? Check out our LCD blog for the latest developments in LCD technology.
 

CF Tech

Administrator
Thank you for your message. Sorry for not getting to your query more quickly.

The connector on the CFAF240320K-T-TS is a "TAB" (tape automated bonding) mated with a "COF" (chip on flex) style flex tail or a "COG" (chip on glass) display construction.

This style of connector is designed to be soldered directly to corresponding pads on your PCB by using a hot-bar soldering machine. High volume contract manufacturers will be familiar with this type of construction and its assembly methods.

There are "bondmaster" machines made by APE that are designed for prototype, rework or repair work:

http://apecorp.com/j.htm

We have had good experience with the APE Bondmaster, and their price is very reasonable ($US4K at last check). Here are some other possible solutions:

http://www.fancort.com/hotbar/hotbar.html
https://www.manncorp.com/hot-bar-soldering/pbs-series/index.php?auto=done
http://www.cherusal.com/tm-111mkiii.htm

The process is as follows:

1) the pads on the PCB are tinned

2) the tail is aligned to the PCB using the alignment holes or visually

3) the tail is held in place relative to the PCB with kapton tape

4) the bondmaster head is lowered, applying pressure between the tail and the PCB

5) the bondmaster is "cycled", which means it heats up to the point of melting the solder and then cools down

6) the bondmaster head is raised.

It is possible to hand solder the tail to the PCB. Great care must be taken since the conductors of the tail are completely exposed in the area where they are soldered. Please see this image:



for a detail picture. Kapton tape should immediately be used to secure the tail to the PCB, so the joint cannot flex and break.

For development purposes, we found SchmartBoard makes some breakout boards with the appropriate pitch:

http://www.schmartboard.com/index.asp?page=products_so

Please let us know if you have any questions.
 
Last edited:

ktrousde

New member
FPC Connector for CFAF240320K-T-TS

Hi

I am looking for a drawing that shows the pcb landing for the FPC connection to the display.
I am assuming that there is no conncetor on the pcb but a landing area. Do you have drawings or files that will let us do the CAD work for this?

Thanks
ken
 
Top