Organic light emitting diode display and method of driving the same
AssigneeSamsung Display Co., Ltd.
InventorsBong-Oh Park, Sung-Un Park, Won-Suk Choi
Life of this patent
Estimating the term…
Abstract
Exemplary embodiments of the present invention relate to an organic light emitting diode (OLED) display and a method of driving the same. The OLED display includes a driving circuit for generating a plurality of data signals and a plurality of scan signals based on image information stored in a memory. The driving circuit receives an inactive state signal generated when the image information is a still image, generates only a plurality of scan signals and a plurality of data signals corresponding to a light emitting region in which the still image is displayed, and transfers the generated scan and data signals to a plurality of corresponding data lines and a plurality of corresponding scan lines, respectively.
Claims37
An organic light emitting diode (OLED) display, comprising:
- a display panel, comprising a plurality of scan lines configured to transfer a plurality of scan signals, a plurality of data lines configured to transfer a plurality of data signals, and a plurality of pixels formed at respective regions where the plurality of scan lines and the plurality of data lines cross;
- and
- a driving circuit configured to generate the plurality of data signals and the plurality of scan signals based on image information stored in a memory,
- wherein the driving circuit is configured to generate, in response to an inactive state signal that is generated when the image information is a still image, only a plurality of scan signals corresponding to a light emitting region in which the still image is displayed and only a plurality of data signals corresponding to the light emitting region in which the still image is displayed, and to transfer the generated scan and data signals to corresponding ones of the data lines and corresponding ones of the scan lines, respectively.
A method of driving an OLED display, comprising a display panel comprising a plurality of scan lines for transferring a plurality of scan signals and a plurality of data lines for transferring a plurality of data signals, a memory configured to store image information, and at least two gamma block drivers configured to control at least two gamma block regions of the display panel, respectively, and to transfer the plurality of data signals to each of the respective at least two gamma block regions, comprising:
- determining whether an inactive state signal generated when the image information stored in the memory is a still image has been received;
- if, as a result of the determination, the inactive state signal is determined to have been received, performing a column direction data checksum for the image information in a column direction where the plurality of data lines extend;
- determining whether the column direction data checksum is 0;
- turning off a gamma block driver corresponding to a gamma block region whose column direction data checksum is 0, from among the at least two gamma block drivers;
- if, as a result of the determination, the inactive state signal is determined to have been received, performing a row direction data checksum for the image information in a row direction where the plurality of scan lines extend;
- and
- controlling the plurality of scan signals based on the row direction data checksum such that the plurality of scan signals are sequentially transferred to a plurality of scan lines corresponding to a light emitting region in which the still image is displayed.
Dependencies are inferred from the claim text.