Novatek Microelectronics Corp.

Macronix International Co., Ltd.

Hsueh-Yi Lee

Wing-Kai Tang

Jin-Sheng Hsieh

Chih-Wei Tang

Chun-Hung Chen

Ching-Chun Lin

Yu-Hsun Peng

Jer-Hao Hsu

Yi Te Shih

Yi-Ti Wang

Jie-Yu Liao

A buffer circuit includes a first transistor, a second transistor, a feed-forward circuit and a resistive bias circuit. The first transistor has a first terminal, a second terminal and a third terminal, wherein the first terminal of the first transistor is served as an input terminal of the buffer circuit. The second transistor has a first terminal and a second terminal, wherein the second terminal of the second transistor is coupled to the third terminal of the first transistor and served as an output terminal of the buffer circuit. The feed-forward circuit has a first terminal and a second terminal respectively coupled to the first terminal of the second transistor and the second terminal of the first transistor. The resistive bias circuit has a first terminal and a second terminal respectively coupled to the second terminal of the first transistor and the first terminal of the feed-forward circuit.

Buffer circuit for enhancing bandwidth of voltage regulator and voltage regulator using the same

A driving apparatus of a display is disclosed. The driving apparatus includes a digital-to-analog converter (DAC) circuit, an output buffer circuit and a pre-charge circuit. The DAC circuit receives a display data with a digital format for generating a gray level voltage. The output buffer circuit is coupled to the DAC circuit, and has an output terminal to output an output signal. The output buffer circuit receives the gray level voltage and the output signal, and compares the gray level voltage and the output signal to generate a comparison result. The pre-charge circuit is coupled to the output buffer circuit, and generates a pre-charge output signal to the output terminal of the output buffer circuit according to the comparison result and a pre-charge enable signal.

Driving apparatus of display with pre-charge mechanism

A driving apparatus of a display is disclosed. The driving apparatus includes a digital-to-analog converter (DAC) circuit, an output buffer circuit and a pre-charge circuit. The DAC circuit receives a display data with a digital format for generating a gray level voltage. The output buffer circuit is coupled to the DAC circuit, and receives the gray level voltage. The output buffer circuit has an output terminal to output a driving output signal. The pre-charge circuit is coupled to the output buffer circuit, and generates a pre-charge output signal according to the gray level voltage and a pre-charge enable signal, and outputs the pre-charge output signal to the output terminal of the output buffer circuit.

In calibration mode, a clock signal and a data signal are respectively transmitted via a clock lane and a data lane of an MIPI. A test clock signal is provided by adjusting the phase of the clock signal, and a test data signal is provided by adjusting the phase of the data signal. By latching the test data signal according to the test clock signal, a latched data may be acquired for determining an optimized phase relationship corresponding to the clock lane and the data lane. When transmitting the clock signal and the data signal in normal mode, the signal delays of the clock lane and the data lane may be adjusted according to the optimized phase relationship.

Method of calibrating signal skews in MIPI and related transmission system

A driving apparatus of a display is disclosed. The driving apparatus mentioned above includes a digital-to-analog converter circuit and an output buffer circuit. The digital-to-analog converting circuit receives a display data with a digital format for generating a gray-level voltage. The output buffer circuit has an output terminal to output an output signal. The output buffer circuit receives the gray-level voltage, a pre-charge enable signal and the output signal and provides a pre-charge output signal to the output terminal of the output buffering circuit according to the pre-charge enable signal and a comparison result of the gray-level voltage and the output signal.

Driving apparatus of display with precharge mechanism

A display driver apparatus and an inversion method thereof are provided. The display driver apparatus includes a gate drive unit, a source drive unit, a multiplexer unit and a common voltage generation unit. The gate drive unit is used to generate a gate signal for turning on/off sub-pixels. The source drive unit is used to generate a source signal required by the display panel. The multiplexer unit is used to regulate the sequence for the source signal to be delivered to the sub-pixels. The common voltage generation unit is used to generate a common voltage and switch the level of the common voltage during the enable period of the gate signal.

Display driver apparatus and inversion driving method thereof

Embodiments of addressing the programming disturb effect are shown. A medium voltage having a magnitude between the programming voltage and ground is applied to a metal bit line among the cells that are subject to the program disturb effect.

Growing community of inventors

Hsinchu County, Taiwan

Hsueh-Yi Lee