Differential signaling serial interface circuit

Abstract

The invention relates to a semiconductor circuit, in particular to a push-pull type differential signaling serial interface circuit. The differential signaling serial interface circuit includes a receiver including a voltage comparator having input terminals with a termination resistor RT, a panel in front of the receiver, the panel having a load, and a transmitter for supplying a differential input current to the load of the panel.

Description

[0001] Cross reference to related applications [0002] This application claims the priority of Korean Patent Application No. 10-2008-0137605 filed on December 30, 2008, the entire content of which is incorporated herein by reference. Technical field [0003] The present invention relates to a semiconductor circuit, and more specifically, to a push-pull type differential signal serial interface circuit. Background technique [0004] figure 1 The prior art push-pull differential signal serial interface circuit is shown. [0005] reference figure 1 In the case of a general TFT-LCD, the output drive current I from the TCON transmitter D It is converted into voltage I in the PCB with the timing controller D *R T (=V DIFF ). [0006] The converted voltage V DIFF It is applied to the voltage comparator in the column driver receiver packaged by COF (Chip OnFilm). Then, the column driver receiver detects the voltage V DIFF The difference and restore a signal. In this case, the voltage V ...

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Problems solved by technology

Thus, the voltage V applied to the voltage comparator of the column drive receiver DIFF Due to having I D *R T Therefore, the initial value cannot be maintained, but it is attenuated in proportion to the impedance added to the signal line pattern, which in turn causes the failure of the stable recovery of the signal, which leads to the problem that the reliability of the entire circuit deteriorates

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