Paper Info
Title
Dynamic voltage scaling of OLED displays
Abstract
Unlike liquid crystal display (LCD) panels that require high-intensity backlight, organic LED (OLED) display panels naturally consume low power and provide high image quality thanks to their self-illuminating characteristic. In spite of this fact, the OLED display panel is still the dominant power consumer in battery-operated devices. As a result, there have been many attempts to reduce the OLED power consumption. Since power consumption of any pixel of the OLED display depends on the color that it displays, previous power saving methods change the pixel color subject to a tolerance level on the color distortion specified by the users. In practice, the OLED power saving techniques cannot be used on common user applications such as photo viewers and movie players. This paper introduces the first OLED power saving technique that does not result in a significant degradation in the color and luminance values of the displayed image. The proposed technique is based on dynamic (driving) voltage scaling (DVS) of the OLED panel. Although the proposed DVS technique may degrade luminance of the panel, the panel luminance can be restored with appropriate image compensation. Consequently, power is saved on the OLED display panel with only minor changes in the color and luminance of the image. This technique is similar to dynamic backlight scaling of LCDs, but is based on the unique characteristics of the OLED drivers. The proposed method saves wasted power in the driver transistor and the internal resistance with an amplitude modulation driver, and in the internal resistance with a pulse width modulation driver, respectively. Experimental results show that the proposed OLED DVS with image compensation technique saves up to 52.5% of the OLED power while keeping the same human-perceived image quality for the Lena image.
Year
DOI
Venue
2011
10.1145/2024724.2024737
DAC
Keywords
Field
DocType
oled power consumption,low power,dynamic voltage scaling,oled driver,oled power,proposed oled dvs,dominant power consumer,oled display,power consumption,oled panel,oled display panel,internal resistance,image quality,computer architecture,image processing,image resolution,pulse width modulation,oled,organic light emitting diodes,lcd panel,liquid crystal display
Dynamic voltage scaling,OLED,Computer science,Pulse-width modulation,Image quality,Backlight,Electronic engineering,Liquid-crystal display,Pixel,Luminance
Conference
ISSN
ISBN
Citations 
0738-100X
978-1-4503-0636-2
51
PageRank 
References 
Authors
2.34
12
4
Name
Order
Citations
PageRank
Donghwa Shin139632.34
Younghyun Kim254051.72
Naehyuck Chang31985185.85
Massoud Pedram478011211.32