Abstract:
A pixel circuit includes an organic light emitting diode including an anode and a cathode connected to a low power voltage, a first transistor including a gate electrode, a first electrode connected to a high power voltage, and a second electrode connected to the anode, a storage capacitor connected between the high power voltage and the gate electrode of the first transistor, a second transistor including a first electrode which receives a data signal corresponding to an emission sustaining voltage or an emission finishing voltage, a second electrode connected to the gate electrode of the first transistor, and a gate electrode which receives an erase scan signal, and a third transistor including a first electrode connected to an emission starting voltage, a second electrode connected to the gate electrode of the first transistor, and a gate electrode which receives a write scan signal.
Abstract:
A display device, system having the same, and pixel are disclosed. In one aspect, the display device includes a display panel including a plurality of pixels and a plurality of wireless power receivers. The display device also includes a wireless power transmitter configured to generate and wirelessly transmit power to the wireless power receivers. Each of the wireless power receivers is configured to wirelessly receive the power from the wireless power transmitter and provide a first power supply voltage to the pixels. The display device further includes a power supply configured to generate an initial power supply voltage and provide the initial power supply voltage to the wireless power transmitter.
Abstract:
A load effect compensation system, display device having the same, and method of compensating load effect of display panel are disclosed. In one aspect, the load effect compensation system for a display device includes a light sensor operatively connected to a display panel and configured to detect an amount of light emitted from the display panel and a light converter configured to convert the detected amount of light into a load amount. The system also includes a data corrector configured to receive the load amount and an image signal and adjust grayscale values of the image signal based at least in part on the load amount.
Abstract:
A stretchable display device includes: a stretchable display panel including: pixels; a first resistive film extending in a first direction; and a second resistive film extending in a second direction; a scan driver to provide a scan signal to the pixels; a data driver to provide a data signal or a compensated data signal to the pixels; a row detection driver to detect a first current flowing through the first resistive film to generate a first detection signal; a column detection driver to detect a second current flowing through the second resistive film to generate a second detection signal; a compensation control signal generator to receive the first and the second detection signals to detect amounts of variations of the first and the second currents, and to generate a compensation control signal; and a timing controller to generate the compensated data signal based on the compensation control signal.
Abstract:
A display device includes: a plurality of pixels; a degradation compensator for using a temperature weight value for a reference temperature, a luminance weight value for a reference luminance, and a material weight value for a reference material, for calculating a reference using time when a degradation rate of the pixels is changed to a reference degradation rate of a reference degradation curve, and for generating a control variable according to the reference using time; and a power supply for controlling a voltage difference between a first power source voltage for supplying a driving current to the pixels and a second power source voltage according to the control variable.
Abstract:
A stretchable display device includes: a stretchable display panel including: pixels; a first resistive film extending in a first direction; and a second resistive film extending in a second direction; a scan driver to provide a scan signal to the pixels; a data driver to provide a data signal or a compensated data signal to the pixels; a row detection driver to detect a first current flowing through the first resistive film to generate a first detection signal; a column detection driver to detect a second current flowing through the second resistive film to generate a second detection signal; a compensation control signal generator to receive the first and the second detection signals to detect amounts of variations of the first and the second currents, and to generate a compensation control signal; and a timing controller to generate the compensated data signal based on the compensation control signal.