| Patent application number | Description | Published |
|---|
| 20090040207 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes: a plurality of pixels that represent a first color, a second color, a third color, and white; a signal processor that converts input image signals respective to the colors into output image signals respective to the colors plus an output image signal for the white color, calculates a current consumption amount consumed in the pixels based on the output image signals, and compensates the output image signals in accordance with the current consumption amount; and a data driver that converts the output image signals into data voltages and supplies the data voltages to the pixels. | 02-12-2009 |
| 20090115707 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THEREOF - An organic light-emitting display device and a method of driving the display device are disclosed. A pixel circuit used in the organic light-emitting display device includes a first switching transistor, a second switching transistor and a driving transistor. The first switching transistor switches a data voltage in response to a first control signal. The second switching transistor switches a compensation voltage in response to a second control signal. The driving transistor provides an electric current to an organic light-emitting device in response to the data voltage and the compensation voltage. | 05-07-2009 |
| 20090213048 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND PROCESSING METHOD OF IMAGE SIGNALS THEREOF - The present invention relates to an organic light emitting display device and a method for processing image signals thereof. An organic light emitting display device according to the present invention receives a plurality of input image signals respectively corresponding to the pixels representing a first color, a second color, a third color, and a white color, and converts the input image signals of at least two dots respectively representing the first color to the third color among the input image signals according to a first extension coefficient to generate a plurality of four-color image signals of at least two dots respectively representing the first color, the second color, the third color, and the white color, to respectively sum a distortion amount of a color impression of the four-color image signals of at least two dots, to calculate a partial extension coefficient corresponding to the sum result, and to extension-convert the input image signals of at least two dot according to the partial extension coefficient thereby generating the four-color output image signals of at least two dots. | 08-27-2009 |
| 20100053137 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - In a display device, a signal controller compensates for luminance of an input image signal that corresponds to each of a plurality of pixels in accordance with a luminance compensation coefficient depending on a position of each pixel, and generates a compensation image signal. A data driver generates data signals that correspond to the plurality of pixels in accordance with the compensation image signal, and supplies the data signals to the corresponding pixels, respectively. The luminance compensation coefficient may depend on a magnitude of the input image signal. | 03-04-2010 |
| 20100091030 | FOUR COLOR DISPLAY DEVICE AND METHOD OF CONVERTING IMAGE SIGNAL THEREOF - One or more embodiments of the present invention relate to a four color image display device. A display device according to an exemplary embodiment of the present invention includes a first pixel adapted to display a first color, a second pixel adapted to display a second color, a third pixel adapted to display a third color, and a white pixel adapted to display a first white. In one aspect, the first to third pixels are adapted to display a second white in combination, and a ratio of the first white and the second white varies according to a gray. Accordingly, a greenish phenomenon of a low-luminance white light in a four color display device may be reduced. | 04-15-2010 |
