Himax Technologies, Inc.

Ncku Research and Development Foundation

Da-Rong Huang

Chien-Ru Chen

Yuan-Kai Chu

Huey-Ru Chuang

A display includes a panel, a timing controller, and a source driver. A method for driving the display includes the steps of sending a transfer signal asserted for a first period to the source driver initially at a line period; sending a driving control signal asserted for an asserted period to the source driver by the timing controller initially at a line period, utilizing a large driving capability of the source driver to drive the panel during the asserted period within the line period, and utilizing a small driving capability of the source driver to drive the panel beyond the asserted period within the line period.

Method for driving a display and related display apparatus

A source driver includes an amplifier, and the amplifier includes an input stage, an output stage, a first current source, a second current source, a third current source, and a switch module. The first current source is utilized to provide a first bias current to the input stage, the second current source is utilized to provide a second bias current to the output stage, and the third current source is utilized to provide a third bias current. The switch module is utilized for selectively connecting the third current source to the input stage or the output stage.

Amplifier and source driver utilizing the amplifier

A source driver adapted to drive a plurality of data lines on a display panel is disclosed. The source driver includes a first output buffer, a second output buffer, a multiplexer, and a first regulating unit. The first and the second output buffers respectively enhance transmission intensities of a first and a second pixel signals. The first regulating unit regulates a slew rate of the first pixel signal outputted from the first output buffer to match a slew rate of the second pixel signal outputted from the second output buffer. The multiplexer coupled to the regulating unit selectively transmits the first and the second pixel signals to one of the odd data lines and one of the even data line, or to the one of the even data lines or the one of the odd data lines, according to a control signal.

Source driver

A source driver and a driving method thereof are provided. The source driver is adapted to a display panel. The source driver includes an output buffer and a regulating unit. The output buffer has an input terminal and an output terminal. The input terminal of the output buffer receives a pixel signal. The output terminal of the output buffer is coupled to the display panel for outputting an output signal. The regulating unit is coupled to the output terminal of the output buffer, for providing a charging current or a discharging current to the output terminal of the output buffer according to a polarity of the pixel signal. Thereby, a slew rate of the output signal is increased.

Source driver adapted to a display panel

An output buffer and a source driver using the same are provided. The output buffer includes an input stage module, a first output stage module, a second output stage module, and a first control module. The input stage module generates a first bias signal via a first connection terminal according to a driving signal and a output signal. The first output stage module generates the output signal in response to the first bias signal via an output terminal of the output buffer. The second output stage module generates a second bias signal in response to the first bias signal via a second connection terminal, and controls a first switch in the second output stage module. The first control module selectively connects a first current source to the output terminal of the output buffer or to the second connection terminal of the second output stage module according to an indication signal.

Output buffer and source driver using the same

A power detecting device, a power supply device using the same, and a reference voltage generator are provided. The power detecting device adapted to detect a power voltage of a display device includes a bandgap voltage generating circuit, a voltage regulating circuit, and a power-on reset circuit. The bandgap voltage generating circuit provides a reference voltage via an output terminal thereof. The voltage regulating circuit and the power-on reset circuit are coupled to the output terminal of the bandgap voltage generating circuit. When the power voltage doesn't reach a threshold voltage, the voltage regulating circuit increases the reference voltage referred by the power-on reset circuit. When the power voltage reaches the reference voltage, the power-on reset circuit generates a reset signal to reset the display device. Therefore, when the power voltage doesn't reach a stable, the power-on reset circuit will not be incorrectly started by increasing the reference voltage.

Power detecting device, power supply device using the same and reference voltage generator

A low noise amplifier including a first-stage signal amplifier, a second-stage signal amplifier and a gain control unit is disclosed. The first-stage signal amplifier is for receiving an input signal and outputting a first output signal accordingly. The second-stage signal amplifier is coupled to the first-stage signal amplifier for outputting a second output signal according to the first output signal. The second-stage signal amplifier includes a first output transistor for outputting the second output signal. The gain control unit includes a first variable resistance device coupled to an input terminal of the first output transistor for adjusting voltage gain of the second output signal.

Growing community of inventors

Tainan County, Taiwan

Da-Rong Huang