Abstract: The present invention provides driving methods for a display having a binary color system of a first color and a second color, which methods can effectively neutralize the grey level shifts due to degradation of a display medium.

Abstract: An emission control driver includes a plurality of stages, each of the plurality of stages including an output terminal coupled to a corresponding one of the emission control lines; input terminals respectively coupled to two or more scan lines of the scan lines for generating a corresponding one of the emission control signals; an input circuit for controlling voltages at a first node and a second node corresponding to scan signals supplied from the two or more scan lines; and an output circuit coupled to the input circuit, the output circuit for controlling the corresponding one of the emission control signals according to the voltages at the first node and the second node.

Abstract: There is provided a method of driving a backlight of a liquid crystal display device capable of eliminating leakage of light from adjacently-placed light emitting blocks. A gray level and maximum gray level of an input video signal are inputted for every light-emitting block. An output average gray level is calculated and a lighting control signal corresponding to converted luminance is outputted. The drivers responding to the lighting control signal makes LEDs (Light Emitting Diodes) emit light. An average gray level from an output from sensors is calculated. An average gray level, based on an average gray level and a light leakage rate, by taking light leakage into consideration. A gray level correcting signal is outputted in the light-emitting block based on the above output average gray level. An output average gray level is corrected in response to a gray level correcting signal.

Abstract: A driving circuit for driving electronic paper is provided, which includes a plurality of driving units. Each driving unit couples to display units of a row of the electronic paper through a data terminal for driving a display unit from a previous gray level to a target gray level during a driving period. Each driving unit includes a data driver and a switch. The data driver respectively provides a black data DC voltage and a white data DC voltage to the data terminal during a black phase and a white phase of the driving period, and provides a first pulse and a second pulse to the data node during a program phase of the driving period. The switch conducts the data node to a middle voltage between the first pulse and the second pulse.

Abstract: An electro-optical device includes, on a substrate, three sub-pixels, three sampling switches, three data lines, three image signal lines, and three lead wiring lines. The three sub-pixels correspond to red, green and blue, respectively. The three sub-pixels are included in a unit pixel. The three sampling switches correspond to the three sub-pixels, respectively. The three data lines electrically connect the three sub-pixels and the three sampling switches with each other, respectively. The three image signal lines, which are provided on a side opposite to the three sub-pixels with respect to the three sampling switches, correspond to the three sampling switches, respectively. The three lead wiring lines electrically connect the three sampling switches and the three image signal lines with each other, respectively. Among the three sampling switches, a sampling switch corresponding to green is disposed close to the three image signal lines compared to other two sampling switches.

Abstract: A timing controller that can reduce malfunctions, a liquid crystal display (LCD) including the timing controller, and a method of operating the LCD, in which the timing controller includes a counter providing a converting enable signal; an analog-to-digital (A/D) converter converting a user command signal into a digital user command signal in response to the converting enable signal; and a control signal generator generating a module control signal that corresponds to the digital user command signal.

Abstract: The present invention relates to a new electromagnetic pen without a battery, and particularly relates to a new electromagnetic pen without a battery, which has two coils inside. An oscillator circuit and a resonance circuit are formed in the new electromagnetic pen respectively by the two coils. The oscillator circuit is formed for emitting electromagnetic signals to a tablet, and the resonance circuit is formed for receiving the electromagnetic energy emitted from the tablet. Therefore, unlike the conventional electromagnetic pen without a battery, which only receive the electromagnetic energy and emit the electromagnetic signals in a short period, the new electromagnetic pen of this invention can receive the electromagnetic energy emitted from the tablet continuously, so the oscillator circuit can emit the electromagnetic signals to the tablet continuously.

Abstract: Provided are a display apparatus and a method for controlling a backlight. A display apparatus including a backlight partitioned into a plurality of sections according to an exemplary embodiment of the present invention includes: an external brightness measurer measuring and providing front brightness values of the display apparatus corresponding to the sections; an image signal analyzer analyzing an inputted image signal and calculating and providing a brightness influence value of each section by adjacent sections; and a control signal corrector converting a source backlight control signal of each section corresponding to the image signal into an intermediate backlight control signal of each section on the basis of the front brightness values and the brightness influence values of the sections and comparing the intermediate backlight control signal with the previous final backlight control signal to generate the current final backlight control signal.

Abstract: An organic light emitting display device includes a scan driver for sequentially supplying a scan signal through scan lines; a data driver for supplying an initial power through data lines during a first period of a time period when the scan signal is supplied through a corresponding scan line of the scan lines, and for supplying data signals to the data lines during a second period of the time period when the scan signal is supplied through the corresponding scan line, the second period following the first period; and pixels at crossing regions of the scan lines and the data lines.

Abstract: The present invention provides method and device for driving local dimming in a liquid crystal display device which enables adaptive application of a gradation roll-off according to an image characteristic.

Abstract: A liquid crystal display device of reducing power consumption includes a liquid crystal panel having a plurality of liquid crystal capacitors for displaying an image, an input interface for generating a scan control signal, an oscillator for generating a predetermined frequency, a control unit electrically coupled to the oscillator for outputting a current control signal when a frequency of the scan control signal is lower than the predetermined frequency, and a driving circuit electrically coupled to the controller for generating a first bias current to charge the plurality of liquid crystal capacitors of the liquid crystal panel.

Abstract: Provided is a display device including: a control portion; a display panel including one or more pixel circuits and an image signal line connected to the pixel circuits; and an image signal line driving circuit. The control portion includes a difference acquiring circuit for acquiring difference data between a value of a gray-level potential, which is to be applied to one of the pixel circuits from the image signal line, and a value of a precharge potential based on the gray-level potential. The image signal line driving circuit calculates the precharge potential based on the value of the gray-level potential and the difference data, and supplies the image signal line with the precharge potential and the gray-level potential in sequence.

Abstract: A method for noise reduction in a digitizer includes determining a location of a stylus with a known frequency of emission over a first sampling period, sampling output from a plurality of detecting elements over a second sampling period, identifying detecting elements with sampled output in the second sampling period above a defined threshold in a selected frequency, the selected frequency being close to but different than the known frequency of the stylus, selecting as a candidate carrier of mere noise a detecting element from the detecting elements identified that is spaced away from the determined location of the stylus, and reducing values of output sampled over the second sampling period from at least one other detecting element, in accordance with the output sampled over the second sampling period from the detecting element selected as the candidate carrier of mere noise.

Abstract: A method of driving a plurality of pixel circuits. The pixel circuits are disposed corresponding to intersections between a plurality of scanning lines and a plurality of signal lines. Each of the pixel circuits includes: a light emitting element; a driving transistor; a holding capacitor; and a selection switch electrically interconnecting the signal line and the gate of the driving transistor at the time of the selection of the scanning line. The method includes: supplying a gradation potential to each signal line during a first period, selecting the scanning line during a second period, and supplying the gradation potential to the gate of the driving transistor; controlling the driving transistor of each of the pixel circuits to be in an ON state, supplying a reference potential to the gate of the corresponding driving transistor, and executing a first compensation operation and supplying driving current to the light emitting element.

Abstract: A driver of a field sequential display is provided. The driver includes a first power device, a second power device, and a driving waveform generator. The first power device generates a first power when the field sequential display is in a color mode. The second power device generates a second power when the field sequential display is in a monochrome mode. The voltage and current of the second power are respectively smaller than the voltage and the current of the first power. The driving waveform generator coupled to the first power device and the second power device and generates a plurality of scan signals and a plurality of display signals according to the first power or the second power, so as to drive a display panel of the field sequential display.

Abstract: A reflection type display apparatus includes an image display having a plurality of pixels, with each of the pixels including a first electrode having a light transmitting property, a second electrode disposed in opposition to the first electrode, and a third electrode disposed in opposition to the first or second electrode. An electrolytic solution containing a metal ion is disposed in contact with the first, second and third electrodes, and a control unit sets a direction of a current flowing between the first, second and third electrodes.

Abstract: A pixel circuit for an organic light emitting display is disclosed. The pixel uses both current and voltage driving methods. A voltage based on an input current and on an input voltage is stored, and current for an organic light emitting diode is generated based on the stored current.

Abstract: A display device includes a display module for displaying information, a light module for emitting light to the display module, and a display control system. The display control system includes a storage module for storing display control parameters, and a system controller for setting the display module by using the display control parameters when an operation time of the light module equals to a predetermined time point, to compensate for a brightness deterioration of the light module. A related display control method is also provided.

Abstract: A backlight apparatus and a display apparatus are provided. The backlight apparatus includes N first switch units to switch a plurality of currents flowing in respective N light emitting element arrays according to an input brightness control signal, N second switch units to switch a plurality of currents flowing in respective N capacitors according to the input brightness control signal, and a reference current generation unit to generate and output a reference current based on the input brightness control signal. An inverter unit adjusts a total current supplied to all of the light emitting element arrays in total to be equal to the reference current if the total current is different from the reference current.

Abstract: In an organic light emitting display, a gamma can be applied according to color regardless of the sequence of data output from a data driver, even if a separate gamma by color is used. A method for driving the organic light emitting display is also provided.