Novatek Microelectronics Corp.

Po-Ju Lee

Chien-Cheng Tu

Chien-Chung Chen

Cheng-Wei Chen

A differential-signal output circuit for a timing controller of a display device includes a conversion circuit, a pre-charging circuit and a timing generator. The conversion circuit is used for receiving a differential signal and outputting a current to a load circuit according to polarity of the differential signal. The pre-charging circuit is coupled to a first output end and a second output end of the conversion circuit or is coupled to a first power driving end and a power second driving end of the conversion circuit. The pre-charging circuit is used for pre-charging the load according to a control signal. The timing generator is used for generating the differential signal and a control signal according to display data.

Differential signal output circuit for timing controller of display device

A low voltage differential signaling (LVDS) transmitter receives a data signal, a data invert signal and a plurality of logic signals. The LVDS transmitter includes a first-stage differential signaling transmitting circuit and a second-stage differential signaling transmitting circuit. The first-stage differential signaling transmitting circuit receives the data signal and the data invert signal and has a first output terminal and a second output terminal. The second-stage differential signaling transmitting circuit is controlled by the logic signals, and has a third output terminal and a fourth output terminal respectively connected to the first output terminal and the second output terminal, so as to generate a needed pre-emphasis signal. When no pre-emphasis signal needs to be generated, the second-stage differential signaling transmitting circuit is controlled to be in disabled state.

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Taipei County, Taiwan

Po-Ju Lee