b. 20 pin small cable
This is cable 20 pins used with older displays 1024x768 like ex. UB133X01-2 , for that display cable was done.
This socket width is about 22mm. It is a bit problem to buy such ready to use cable, so here was build from the original one from laptop. After look at display socket I had to solder corresponding signals cables to the socket connected to controller board.
Picture of UB133X01-2, it is from old Asus.
Signals are described in display's datasheet.
Other side of cable was cut and all signal cables was soldered to socket with proper signal order.
Two cables done with different sockets.
Let test if display works with new cable, yes it works. After soldering and positive testing, cable was covered by hot glue
to keep good and stable connection.
Sample of possible signals in 20 pin connector