Patent ID: 7189926

Claim:
A low voltage differential signaling (LVDS) signal transmission system, being a high-frequency signal transmission system applied between a liquid crystal display interface and a system board interface, and comprising a low voltage differential signaling (LVDS) receiver, a flexible flat cable (FFC) having a characteristic impedance (Z 0 ) of 100±5%, an accessory insert board and a lift-up connector; wherein said LVDS receiver defining a signal transmission interface of said liquid crystal display interface; said flexible flat cable having a characteristic impedance (Z 0 ) of 100±5% being stacked with an upper PET insulator layer, a conductive wire layer and a lower PET insulator layer to define a three-layer stacked structure; wherein one end of said flexible flat cable constitutes a first electric conductive section for electrically coupling said lift-up connector and the other end constituting a second electric conductive section for electrically coupling said LVDS receiver; said accessory insert board having an indented space for accommodating said flexible flat cable and being fixed under a small area of said flexible flat cable including said second electric conductive section, thereby said second electric conductive section and the front end section of said accessory insert board defining a structure similar to a LVDS connector for inserting into said LVDS receiver and electrically connecting said LVDS receiver; and said lift-up connector defining a signal transmission interface for said system board interface and having a main body and a movable lid; as said movable lid is lifted up to allow said first electric conductive section of said first flexible flat cable to be inserted into a slot with installed terminals of said main body; as said movable lid is closed downward and fixed in a position to allow said first electric conductive section of said flexible flat cable to be fixed into said slot of said main body and electrically coupled with said slot.