摘要:
An organic light emitting display and power supply method thereof operate an organic light emitting display panel using a high voltage EVLDD and a low voltage ELVSS supplied from a driver integrated circuit during a low power display mode. The organic light emitting display a first power supply configured to supply a first power including a first high voltage and a first low voltage, a second power supply configured to supply a second power including a second high voltage and a second low voltage, and an organic light emitting display panel configured to receive the first power from the first power supply in a standard display mode and configured to receive the second power from the second power supply in a low power display mode.
摘要:
An apparatus and method for performing natural luminance adjustment by adjusting voltage levels of gray-scale voltages of a display device through a plurality of steps and determining gray-scale voltage levels of intermediate luminance levels using predetermined data when a luminance level of the display device is adjusted.
摘要:
A power driver for applying a voltage necessary for driving a gate driver for a display panel includes a first booster, a voltage selector, and a second booster. The first booster receives a voltage from a battery and generates a first voltage. The voltage selector selects one of the first voltage and a second voltage generated outside the power driver and applied to the display panel. The second booster receives an output of the voltage selector and generates a voltage necessary for the driving of the gate driver.
摘要:
A luminance control method of a display device is provided to control luminance of a display device. The display device has a display unit having a plurality of pixels emitting light. In some aspects, the luminance control method includes receiving a luminance level, applying a first luminance control method if the received luminance level is less than a reference luminance level, calculating an average value of video data for each frame if the luminance level is greater than the reference luminance level, applying the first luminance control method if the average value is less than a reference gray level value, and applying a second luminance control method if the average value is greater than the reference gray value level.
摘要:
An organic light emitting display device includes a display area including a plurality of pixels connected to scan lines, light emission control lines and data lines; a scan driver electrically connected to the display area through the scan lines and light emission control lines; a data driver electrically connected to the display area through the data lines; an optical sensor for generating an optical sensor signal corresponding to the brightness of the ambient light; a first luminance control unit for providing a first luminance control signal for controlling a gamma-corrected gray level voltage of a data signal in accordance with the optical sensor signal; and a second luminance control unit for providing a second luminance control signal for controlling a pulse width of the light emission control signal in accordance with the optical sensor signal and the data of one frame.
摘要:
An organic light emitting display device including: an optical sensor for generating an optical sensor signal corresponding to brightness of ambient light; a first luminance control unit for generating a pulse width (EW1) of a brightness control signal in accordance with the optical sensor signal (Ssel) and supplying a selection signal; a second luminance control unit for generating a fluctuated value (EW2) for the pulse width of the brightness control signal in accordance with data of one frame; and a luminance control signal generation unit for generating a luminance control signal (Vc) for controlling a scan driver in accordance with the pulse width of the brightness control signal and the fluctuated value. Here, the second luminance control unit is turned on/off according to the selection signal from the first luminance control unit.
摘要:
An apparatus for outputting a gamma filter reference voltage, the apparatus including a gamma filter reference voltage generator that generates a first reference voltage to be applied as a reference voltage to a gamma filter and a plurality of second reference voltages, a temperature sensor that generates temperature information by sensing temperature, and a reference voltage adjustment unit that selects at least one of the plurality of second reference voltages based on the temperature information and applies the selected second reference voltage to the gamma filter.
摘要:
An organic light emitting display having an improved image quality. The organic light emitting display includes a data driver for supplying a data signal to data lines; a scan driver for supplying a scan signal to scan lines; pixels at crossing regions between the data lines and the scan lines; a power source unit for generating a first power; a first voltage divider for dividing the first power to generate a first reference power; a second voltage divider for dividing a power from an external power source to generate a second reference power; and a switch to transmit one of the first reference power or the second reference power to the data driver. Each of the pixels includes an organic light emitting diode that emits light when a current flows from the first power to the second power.
摘要:
An organic electroluminescence display device is disclosed. The display comprises pixels which emit light according to data signals by controlling current from a pixel power supply through an organic light emitting diode, and to a ground power supply. In order to eliminate an initial glare, the pixel power supply is gradually provided to the pixels, and after a delay, the ground power supply is then gradually provided to the pixels.
摘要:
An organic light emitting display and power supply method thereof operate an organic light emitting display panel using a high voltage EVLDD and a low voltage ELVSS supplied from a driver integrated circuit during a low power display mode. The organic light emitting display a first power supply configured to supply a first power including a first high voltage and a first low voltage, a second power supply configured to supply a second power including a second high voltage and a second low voltage, and an organic light emitting display panel configured to receive the first power from the first power supply in a standard display mode and configured to receive the second power from the second power supply in a low power display mode.