Silicon Works Co., Ltd.

Hyun Ho Cho

Joon Ho Na

Young Bok Kim

Dae Keun Han

Dae Seong Kim

Yong Ik Jung

Hyun Kyu Jeon

Kyung Jik Min

Pyung Sik Ma

Yong Icc Jung

Jung Bae Yun

Ji Hun Kim

Young Suk Son

Hyung Seog Oh

An Young Kim

Ju Young Shin

Hae Won Lee

Hyun Ja Cho

Young Icc Jung

Yong Bok Kim

Disclosed are a source driver capable of achieving high speed and high resolution and a display driving circuit including the same. The source driver may include: a first channel group and a second channel group configured to output source driving signals; a first gradation voltage divider configured to generate first gradation voltages using gamma reference voltages and provide the first gradation voltages to the first channel group; and a second gradation voltage divider configured to generate second gradation voltages having the same level as the first gradation voltages using the gamma reference voltages, and provide the second gradation voltages to the second channel group. The first and second gradation voltage dividers are connected to a gamma reference voltage generator configured to provide the gamma reference voltages, and receive the gamma reference voltages having the same voltage range from the gamma reference voltage generator.

Source driver and display driving circuit including the same

The present invention relates to a display apparatus which drives a display panel to display an image, and a driving circuit thereof. The display apparatus includes a timing controller configured to provide a control option having a value for compensating for pixel data and a gray scale, and a driving circuit configured to combines the control option and the pixel data and output an output voltage.

Display apparatus and driving circuit thereof

A source driver may include: a transmission line configured to transmit an output signal of a sample and hold circuit which stores pixel information of an organic light emitting diode (OLED) cell; an amplifier is formed a first offset voltage at an input terminal by a parasitic capacitor of the transmission line; and an offset voltage storage unit configured to store the first offset voltage outputted from the amplifier as a second offset voltage while the transmission of the output signal of the sample and hold circuit through the transmission line is turned off, and offset the first offset voltage by providing the second offset voltage to the input terminal of the amplifier when the output signal of the sample and hold circuit is transmitted through the transmission line.

Source driver of display device

A sample and hold circuit may include: a main sample and hold circuit configured to sample and hold pixel information of an organic light emitting diode (OLED) cell, and output a first output signal; and a dummy sample and hold circuit configured to sample and hold a reference voltage in synchronization with the main sample and hold circuit, and output a second output signal for offsetting a switching noise signal contained in the first output signal.

Sample and hold circuit and source driver including the same

A circuit for driving an organic light emitting diode display includes a display panel that displays an image by using organic light emitting diodes disposed at intersection areas of a plurality of gate lines and a plurality of data lines; a threshold voltage detection control unit that supplies a precharge voltage by sequentially turning on transistors for threshold voltage detection, which are connected among the data lines and the organic light emitting diodes on the display panel, in units of horizontal lines, and enables threshold voltages to be detected; and a source driver that detects threshold voltages of all organic light emitting diodes arranged on a corresponding horizontal line, and repeats an operation, as necessary, for sampling/holding the detected threshold voltages through M sample/hold circuits, converting the sampled/held threshold voltages into digital signals, and storing the digital signals in a memory.

Circuit and method for driving OLED display

An LCD driving circuit includes a first buffer configured to have a terminal for a first voltage, a terminal for a second voltage and a terminal for an intermediate voltage between the first voltage and the second voltage, and be driven in a range from the first voltage to the intermediate voltage; and a second buffer configured to have a terminal for the first voltage, a terminal for the second voltage and a terminal for the intermediate voltage, and be driven in a range from the intermediate voltage to the second voltage. The terminal for the intermediate voltage of the first buffer and the terminal for the intermediate voltage of the second buffer are connected with each other, and the first voltage is a highest voltage, the second voltage is a lowest voltage, and the intermediate voltage is in a range from the first voltage to the second voltage.

Liquid crystal display driving circuit with less current consumption

The present invention relates to a display driving circuit and a display driving system, and more particularly, to a display driving circuit having a half-VDD power supply circuit built therein and a display driving system including the same, in which the display driving circuit is further provided with a half voltage VDD terminal in addition to the highest voltage VDD terminal and the lowest voltage VSS terminal, and the half voltage, which is between the highest voltage and the lowest voltage, is generated and supplied by the half voltage power supply from the inside of the display driving circuit, rather than being supplied from an external power supply.

Display driving circuit having half VDD power supply circuit built therein and display driving system including the same

Disclosed is a source driver integrated circuit with an improved slew rate by disposing a switching unit, which operates as a resistance component during display driving, before the feedback line of an output buffer. According to the source driver integrated circuit with an improved slew rate, a switching unit, which operates as a resistance component when a signal is transferred, is disposed in the feedback loop of an output buffer, so that the resistance component is not shown to a panel load, thereby improving the slew rate of an output signal. In addition, the improved slew rate makes it possible to easily implement an image through a display.

Source driver integrated circuit with improved slew rate

A display driving circuit and method is capable of minimizing the residual image of a display panel as well as consumption electric current. The display driving circuit generates driving signals corresponding to valid data and black data and transmits the driving signals to a display panel, and includes N data selection switches (where N is the integer), N buffers, N buffer output selection switches, and multiple charge sharing switches. The N data selection switches select one of the valid data and the black data. The N buffers buffer the signal selected by the respective data selection switches. The N buffer output selection switches switch outputs of the buffers to output the respective driving signals. The multiple charge sharing switches connect the neighboring pairs of the driving signals.

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Incheon-si, South Korea

Hyun Ho Cho