Novatek Microelectronics Corp.

Kuo-Che Hong

Ji-Ting Chen

A source driver, an operation method thereof and a driving circuit using the same are provided. The source driver includes a gamma voltage generating circuit, a first voltage buffer and a reference voltage driving circuit. The gamma voltage generating circuit receives an inter reference voltage to provide a first gray level reference voltage corresponding to a first display gray level. The first voltage buffer is used for receiving the first gray level reference voltage to provide a driving voltage. The reference voltage driving circuit is coupled to the gamma voltage generating circuit and the first voltage buffer and used for accelerating rising speed or falling speed of the first gray level reference voltage.

Source driver, operatoin method thereof and driving circuit using the same

A load driving apparatus including a first driving unit, a second driving unit, and a circuit switch module is disclosed. The first and the second driving unit are respectively disposed at a first driving channel and a second driving channel and respectively output a first driving signal and a second driving signal for driving a first load and a second load during a channel output period. The circuit switch module is coupled between the first and the second driving channel and includes a plurality of signal transmitting paths. During a data loading period and a charge sharing period, the circuit switch module turns on all the signal transmitting paths, so that a charge sharing effect between the first load and the second load is achieved during the charge sharing period and accordingly the power consumption is reduced. Additionally, a load driving method of the load driving apparatus is disclosed.

Load driving apparatus and driving method thereof

A circuit of an operational amplifier includes an operational main circuit, a plurality of current sources, and at least one clamp circuit. The current sources are configured to connect the operational main circuit to a high voltage source or a ground voltage source. The clamp circuit is connected between the operational main circuit and at least one of the current sources. Here, a transistor device connected to the clamp circuit has a crossing-voltage endurance level which is lower than a preset crossing-voltage endurance level of the operational main circuit.

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Hsinchu, Taiwan

Kuo-Che Hong