Making Image More Energy Efficient for OLED Smart Devices

Now, more and more mobile smart devices are emerging massively; energy consumption of these devices has become an important consideration due to the limitation of battery capacity. Displays are the dominant energy consuming component of battery-operated devices, giving rise to organic light-emitting diode (OLED) as a new promising display technology, which consumes different power when displaying different content due to their emissive nature. Based on this property, we propose an approach to improve image energy efficiency on OLED displays by perceiving image content. The key idea of our approach is to eliminate undesired details while preserving the region of interest of the image by leveraging the color and spatial information. First, we use edge detection algorithm to extract region of interest (ROI) of an image. Next, we gradually change luminance and saturation of region of noninterest (NON-ROI) of the image. Then we perform detailed experiment and case study to validate our approach; experiment results show that our approach can save 22.5% energy on average while preserving high quality of the image.

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Waiting for Act 2: what lies beyond organic light-emitting diode (OLED) displays for organic electronics?

Nanophotonics ◽

10.1515/nanoph-2020-0322 ◽

2020 ◽

Vol 10 (1) ◽

pp. 31-40

Author(s):

Stephen R. Forrest

Keyword(s):

Organic Electronics ◽

Light Emitting Diode ◽

Electronic Devices ◽

Organic Electronic Devices ◽

Organic Electronic ◽

Light Emitting ◽

Organic Light Emitting Diode ◽

Organic Light ◽

Semiconductor Thin Films ◽

Display Technology

AbstractOrganic light-emitting diode (OLED) displays are now poised to be the dominant mobile display technology and are at the heart of the most attractive televisions and electronic tablets on the market today. But this begs the question: what is the next big opportunity that will be addressed by organic electronics? We attempt to answer this question based on the unique attributes of organic electronic devices: their efficient optical absorption and emission properties, their ability to be deposited on ultrathin foldable, moldable and bendable substrates, the diversity of function due to the limitless palette of organic materials and the low environmental impact of the materials and their means of fabrication. With these unique qualities, organic electronics presents opportunities that range from lighting to solar cells to medical sensing. In this paper, we consider the transformative changes to electronic and photonic technologies that might yet be realized using these unconventional, soft semiconductor thin films.

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Who will win the future of display technologies?

National Science Review ◽

10.1093/nsr/nwy050 ◽

2018 ◽

Vol 5 (3) ◽

pp. 427-431 ◽

Cited By ~ 2

Author(s):

Hepeng Jia

Keyword(s):

Technology Development ◽

Liquid Crystal Display ◽

Light Emitting Diode ◽

Associate Editor ◽

Production Costs ◽

Light Emitting ◽

Organic Light Emitting Diode ◽

Technology Leader ◽

Display Technology ◽

Lower Production

Abstract In recent years, China and other countries have invested heavily in the research and manufacturing capacity of display technology. Meanwhile, different display technology scenarios, ranging from traditional LCD (liquid crystal display) to rapidly expanding OLED (organic light-emitting diode) and emerging QLED (quantum-dot light-emitting diode), are competing for market dominance. Amidst the trivium strife, OLED, backed by technology leader Apple's decision to use OLED for its iPhone X, seems to have a better position, yet QLED, despite still having technological obstacles to overcome, has displayed potential advantage in color quality, lower production costs and longer life. Which technology will win the heated competition? How have Chinese manufacturers and research institutes been prepared for display technology development? What policies should be enacted to encourage China's innovation and promote its international competitiveness? At an online forum organized by National Science Review, its associate editor-in-chief, Dongyuan Zhao, asked four leading experts and scientists in China.

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