Abstract:
Disclosed is a power control device for a display device, including: a current scaling factor calculation unit calculating a current scaling factor according to an input data signal and a load of the input data signal; a data scaling unit generating a data scaling factor based on the current scaling factor and scaling a data signal corresponding to light emitting gradation of a pixel; and a gamma scaling unit generating a gamma scaling factor based on the current scaling factor and scaling a gamma value for gamma correction of a data signal.
Abstract:
A display device comprising a display panel including a plurality of pixels configured to write a first image data signal corresponding to a corresponding frame for a first frame and emits light according to driving current depending on a second image data signal corresponding to a previous frame is disclosed. In one aspect, the first frame includes a reset period of resetting data voltage according to the second image data signal, a compensating period of compensating threshold voltages of driving transistors of the pixels, a data writing period of transferring scan signals corresponding to the pixels in sequence, writing the first image data signal, and a light emitting period of simultaneously emitting light according to the second image data signal, wherein the data writing period and the light emitting period frame are overlap each other.
Abstract:
A image sticking compensating device according to example embodiments includes a degradation calculator configured to calculate a degradation weight based on input image data, and to calculate degradation data of a frame, an accumulator configured to accumulate the degradation data, and to generate age data using the accumulated degradation data, and a compensator configured to determine a grayscale compensation value corresponding to the age data and an input grayscale of the input image data, and to output age compensation data by applying the grayscale compensation value to the input image data.
Abstract:
An application processor includes a scaling rate calculator that determines a scaling rate of first image data based on stress data that includes pixel degradation information for each pixel; and an image processor that generates second image data by decreasing a maximum grayscale value of the first image data based on the scaling rate, where the first image data is received from an external component.
Abstract:
An organic light emitting diode display includes a plurality of pixels configured to store a first data signal received through a corresponding data line during a scan period and to emit light according to a second data signal during a light emitting period of a frame, wherein the first data signal corresponds to the frame and the second data signal corresponds to a previous frame, and the scan period overlaps the light emitting period.
Abstract:
A display device including a display unit having a plurality of pixels is disclosed. In one aspect, at least one first pixel among the pixels includes: a first compensation capacitor including one electrode connected to a data line and the other electrode connected to a first node; a first switching transistor including a gate electrode configured to have a scan signal, one electrode connected to the first node, and the other electrode connected to a second node; a first driving transistor including a gate electrode connected to the second node, one electrode connected to a first power source voltage, and the other electrode connected to a first organic light emitting diode (OLED); and a first link transistor including a gate electrode configured to have a link control signal, one electrode connected to the data line, and the other electrode connected to the first power source voltage. Pixels of the type with four transistors may be alternated with pixels of the type having three transistors (no link transistor) according to a desired aspect ratio.
Abstract:
A display device comprising a display panel including a plurality of pixels configured to write a first image data signal corresponding to a corresponding frame for a first frame and emits light according to driving current depending on a second image data signal corresponding to a previous frame is disclosed. In one aspect, the first frame includes a reset period of resetting data voltage according to the second image data signal, a compensating period of compensating threshold voltages of driving transistors of the pixels, a data writing period of transferring scan signals corresponding to the pixels in sequence, writing the first image data signal, and a light emitting period of simultaneously emitting light according to the second image data signal, wherein the data writing period and the light emitting period frame are overlap each other.
Abstract:
An organic light emitting diode display includes a plurality of pixels configured to store a first data signal received through a corresponding data line during a scan period and to emit light according to a second data signal during a light emitting period of a frame, wherein the first data signal corresponds to the frame and the second data signal corresponds to a previous frame, and the scan period overlaps the light emitting period.
Abstract:
An organic light emitting diode display includes a plurality of pixels configured to store a first data signal received through a corresponding data line during a scan period and to emit light according to a second data signal during a light emitting period of a frame, wherein the first data signal corresponds to the frame and the second data signal corresponds to a previous frame, and the scan period overlaps the light emitting period.
Abstract:
An organic light emitting diode (OLED) display device includes a plurality of OLED pixels. In one aspect, each pixel respectively includes a first capacitor connected between a data line and a first node, a switching transistor connecting the first node and a second node, a second capacitor connected between the second node and a third node, a driving transistor having a gate electrode connected to the third node and controlling a driving current flowing from a first power source voltage to an OLED, and a reference voltage transistor transmitting a reference voltage to the first node. When a light emitting step occurs in which the OLED emits light, it is simultaneously performed in a plurality of pixels by use of a driving current, the switching transistor is turned off and the reference voltage transistor is turned on such that the reference voltage is transmitted to the first node, and a data voltage corresponding to a scan signal of a gate-on voltage respectively corresponding to a plurality of pixels is stored to the first capacitor. Aspects also include pixel circuits and methods of driving the pixels in the display.