12Layer Rigid-flex HDI PCB for Tcon LCM / Soft gold finger
The TCON (timing controller) board translates between a standard
video signal and the specific row and column driver signaling
needed by a specific LCD (or other) panel.
An LCD panel is like a CRT in the sense that there is a chemical
which responds optically to an electric charge, and that charge
must be refreshed or else the optical response decays. The panels
themselves have precision timing requirements needed to refresh the
LCD chemistry at the proper rate to keep the signal uniform and
avoid decay or update.
1.Generation of T-con
The gold finger material Polymide is thin and flexible. Other areas
material CCL FR4.
2 . Specifications:
| Name | 6Layer Rigid-flex HDI pcb for Tcon LCM / Soft gold finger |
| Layers | 6 |
| Quality Grade | IPC 6012 Class 2,IPC 6012 Class 3 |
| Material | Polymide + FR4 |
| Min Track/Spacing | 75um/100um |
| Drilling Size | 100um |
| Solder Mask | Green |
| Silkscreen | White |
| Surface Finish | Immersion gold |
| Finished Copper | 12um |
| Production time | 10-21 working days |
| Lead time | 2-3 days
|
In TV video timing, you can have a video signal between 24 and 60
frames per second, and many different resolutions, but the panel
itself only supports a single resolution and timing. The timing is
extremely precise and the distance of the cables from the timing
controller to the panel need to be very precise. This is why the
panels come from the panel manufacturer with the TCON pre-attached
and wired. The TV or monitor manufacturer then designs their own
PCB with TV/PC inputs, tuner, audio, speaker, etc., and the video
signal transmits to the TCON board over a standard interface such
as LVDS, VX1, or eDP. The TV maker designs one board which can then
support many panel sizes, and can even use the same board with both
LCD and OLED. Some TCON boards have 60 Hz to 120 Hz frame rate
converters, but this isn’t very common any longer, as the TV System
on chip usually handles this these days.
