Power control in an organic light emitting diode (oled) display device

Patent metadata

Field	Value
Publication number	US-2016351118-A1
Application number	US-201514723686-A
Country	US
Kind code	A1
Filing date	May 28, 2015
Priority date	May 28, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

Embodiments of systems and methods for power control in an Organic Light Emitting Diode (OLED) display device are described. In an embodiment, a method includes monitoring a level of current draw from an Organic Light Emitting Diode (OLED) display device. The method may also include comparing the level of current draw to a threshold value. Additionally, a method may include throttling system power consumption in response to the level of current draw exceeding the threshold value.

First claim

1 . A method, comprising:
monitoring a level of current draw from an Organic Light Emitting Diode (OLED) display device; comparing the level of current draw to a threshold value; and throttling system power consumption in response to the level of current draw exceeding the threshold value.

2 . The method of claim 1 , calibrating the threshold value upon system initialization.

3 . The method of claim 2 , wherein calibrating the threshold value further comprises causing the OLED display device to display white on each pixel.

4 . The method of claim 3 , wherein calibrating the threshold value further comprises measuring the level of current draw while the OLED display device is displaying white on each pixel.

5 . The method of claim 4 , wherein calibrating the threshold value further comprises setting a scaling function to set thresholds at predetermined ratios of the full power when the OLED display device is displaying white on each pixel.

6 . The method of claim 1 , further comprising measuring a current value at a current sensor disposed between a power source and an OLED matrix.

7 . The method of claim 1 , further comprising measuring a time interval in which the level of current draw exceeds the threshold.

8 . The method of claim 7 , further comprising determining whether the level of current draw has exceeded the threshold during the time interval.

9 . The method of claim 1 , wherein throttling the system power further comprises causing the system power control to enter a power-save mode.

10 . The method of claim 1 , wherein throttling the system power further comprises sub-sampling one or more OLEDs in the OLED display device.

11 . A system, comprising:
a current sensor device configured to monitor a level of current draw from an Organic Light Emitting Diode (OLED) display device; a controller coupled to the current sensor device, the controller configured to:
compare the level of current draw to a threshold value; and
throttle system power consumption in response to the level of current draw exceeding the threshold value.

12 . The system of claim 11 , wherein the controller is further configured to calibrate the threshold value upon system initialization.

13 . The system of claim 12 , wherein calibrating the threshold value further comprises causing the OLED display device to display white on each pixel.

14 . The system of claim 13 , wherein calibrating the threshold value further comprises measuring the level of current draw while the OLED display device is displaying white on each pixel.

15 . The system of claim 14 , wherein calibrating the threshold value further comprises setting a scaling function to set thresholds at predetermined ratios of the full power when the OLED display device is displaying white on each pixel.

16 . The system of claim 11 , wherein the controller is further configured to measure a current value at a current sensor disposed between a power source and an OLED matrix.

17 . The system of claim 11 , wherein the controller is further configured to measure a time interval in which the level of current draw exceeds the threshold.

18 . The system of claim 17 , wherein the controller is further configured to determine whether the level of current draw has exceeded the threshold during the time interval.

19 . The system of claim 11 , wherein throttling the system power further comprises causing the system power control to enter a power-save mode.

20 . The system of claim 11 , wherein throttling the system power further comprises sub-sampling one or more OLEDs in the OLED display device.

Assignees

• Dell Products Lp

Inventors

• Knepper Lawrence Edward
• Aurongzeb Deeder M

Classifications

• G09G2320/0693

  Calibration of display systems · CPC title

• G09G2330/023

  using energy recovery or conservation · CPC title

• G09G3/3233 Primary

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G2320/029

  by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel · CPC title

• G09G2330/026

  Arrangements or methods related to booting a display · CPC title