ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD FOR THE SAME
First Claim
1. An organic light emitting display device, comprising:
- a data driver adapted to;
receive an external voltage;
generate a drive voltage;
control the drive voltage on or off, wherein the drive voltage is controlled on when the organic light emitting display device is operating in normal mode and the drive voltage is controlled off when the organic light emitting display device is not operating in normal mode; and
generate and output a data signal;
a photo sensor adapted to;
sense a brightness of an ambient light to determine a sensed brightness of ambient light;
receive the drive voltage output from the data driver; and
output a brightness signal based on the sensed brightness of ambient light,a scan driver adapted to generate and transfer a scan signal; and
a pixel portion adapted to;
receive the data signal and the scan signal;
receive the brightness signal; and
display an image having a luminance indicative of the brightness signal.
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Accused Products
Abstract
An organic light emitting display device and a driving method for the same is provided. The device includes a pixel portion adapted to receive a scan signal and a data signal and display an image. A scan driver generates and applies the scan signal to the pixel portion. A data driver generates and applies the data signal and a pixel voltage to the pixel portion. When the device is operating in the normal mode, the data driver also applies a drive voltage to a photo sensor also included in the display device. The photo sensor adjusts a luminance of the pixel portion according to a sensed brightness of ambient light. When the device is operating in the power saving or stand-by mode, the data driver controls the drive voltage off and thereby prevents power consumption by the photo sensor.
11 Citations
9 Claims
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1. An organic light emitting display device, comprising:
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a data driver adapted to; receive an external voltage; generate a drive voltage; control the drive voltage on or off, wherein the drive voltage is controlled on when the organic light emitting display device is operating in normal mode and the drive voltage is controlled off when the organic light emitting display device is not operating in normal mode; and generate and output a data signal; a photo sensor adapted to; sense a brightness of an ambient light to determine a sensed brightness of ambient light; receive the drive voltage output from the data driver; and output a brightness signal based on the sensed brightness of ambient light, a scan driver adapted to generate and transfer a scan signal; and a pixel portion adapted to; receive the data signal and the scan signal; receive the brightness signal; and display an image having a luminance indicative of the brightness signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for driving an organic light emitting display device that adjusts a luminance according to an ambient light, the method comprising:
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controlling a drive voltage of a photo sensor on when the organic light emitting display device operates in normal mode; applying the drive voltage to a photo sensor for outputting a signal corresponding to an ambient light adjusting a luminance according to the signal corresponding to the ambient light; and controlling the drive voltage of the photo sensor off when the organic light emitting display device operates in a power saving mode or in a stand-by mode. - View Dependent Claims (9)
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Specification