Abstract:
A display driving device includes a timing controller, a power management integrated circuit, and a column driver. The timing controller generates image data including a plurality of pixel data, and generates a power saving signal based on magnitudes of the plurality of pixel data included in the image data. The power management integrated circuit generates a drive voltage having a voltage level that is varied based on the power saving signal. The column driver receives the image data generated by the timing controller, and generates a plurality of output voltages corresponding to the plurality of pixel data included in the image data based on the drive voltage.
Abstract:
In a semiconductor device, a first amplifier block operates in a holding mode for a first period to output a first tap voltage based on a first tap input voltage and an offset of a first gamma amplifier sampled. A second amplifier block operates in the holding mode during the first period to output a second tap voltage based on a second tap input voltage and an offset of a second gamma amplifier sampled. A third amplifier block operates in a sampling mode during the first period to sample an offset of a third gamma amplifier based on the second tap input voltage.; Input terminal switches divide the first and second tap input voltages to the first to third amplifier blocks, and output terminal switches transmit the first tap voltage and the second tap voltage from at least some of the first to third amplifier block to a divider.
Abstract:
A display driver circuit includes a comparator that is configured to compare first pixel data of a plurality of pixel data with second pixel data of the plurality of pixel data, the plurality of pixel data respectively corresponding to a plurality of pixels connected to a data line, a pre-emphasis controller configured to calculate an offset based on a compare result of the comparator and gamma segment points, which are adjacent to the second pixel data, from among a plurality of gamma segment points used as a reference for dividing the plurality of pixel data, a calculator configured to calculate pre-emphasis pixel data based on the second pixel data and the offset, and an output circuit configured to transmit a pre-emphasis gray scale voltage corresponding to the pre-emphasis pixel data and a target gray scale voltage corresponding to the second pixel data to a display panel through the data line.
Abstract:
The semiconductor device comprises a controller; an X-axis driver; a Y-axis driver; and an output controller receiving the X-axis and Y-axis output signals and generating driving signals.
Abstract:
A probing assembly includes a TDR probe coupling a time-domain reflectometry (TDR) device with a semiconductor device including a transistor therein, the transistor having a gate electrode, a source electrode, and a drain electrode on a substrate, wherein the TDR probe includes a first probe tip connecting the gate electrode to a signal line of the TDR device, and second to fourth probe tips connecting the source electrode, the drain electrode, and a bulk region of the substrate to ground lines of the TDR device, respectively.
Abstract:
A power-on reset circuit includes a voltage detector unit to output an electrical signal in response to a power supply voltage received from a power supply terminal, an inverter to output a reset signal according to a level of the electrical signal from the voltage detector unit, a first switch unit to be turned on or off in response to the reset signal from the inverter; a first discharge unit to discharge the electrical signal in response to the power supply voltage from the first switch unit, a second switch unit to be turned on according to a start pulse signal from an external device and to receive the power supply voltage from the power supply terminal, and a second discharge unit to discharge the electrical signal in response to the power supply voltage from the second switch.
Abstract:
A gamma voltage generating circuit includes a gamma voltage distribution unit configured to divide a reference voltage to generate a plurality of initial gamma reference voltages, and a gamma voltage selection unit configured to generate gamma reference voltages by selecting first gamma reference voltages, corresponding to a first color pixel, from among the plurality of initial gamma reference voltages and second gamma reference voltages, corresponding to a second color pixel, from among the plurality of initial gamma reference voltages. Herein, an output part of initial gamma reference voltages selected in common as the first and second gamma reference voltages is shared with input parts of the first and second gamma reference voltages.