LCD Filter Could Make Screens 400 Percent More Energy Efficient

LCDA new color filter developed by researchers at the University of Michigan could enhance LCD efficiency by 400 percent.

Professor L. Jay Guo and his team have created an optical film that both polarizes and colors the light that passes through an LCD, which replaces the multiple layers of optical devices that traditionally played the same role. With the use of these conventional layers, an LCD would only emit eight percent of the light produced by its backlight. With the newly developed film, 36 percent of light is emitted, which is an increase that enhances overall LCD efficiency.

The new color filter consists of two thin aluminum layers enclosing a type of insulating material, and is less than 200 nanometers thick. It also contains slits that create different colors when the backlight illuminates them, and they are "matched in scale to the wavelength of visible light" and their "length and distance apart determine the color produced."

What really increases LCD efficiency is the grating pattern, which enhances efficiency by 400 percent. Instead of absorbing half the light with the wrong polarization like current LCD polarizing filters, the new filter reflects the light toward a mirror that "flips" some of its polarization and allows more light to pass through the filter.

LCD Filter

But Guo's new filter doesn't only apply to color displays. It can also be applied to solar cells to control polarizations and reflections of light. In addition, Nicholas Fang from the University of Illinois at Urbana-Champaign noted that these filter's could be combined with Qualcomm's new low-power reflective displays to eliminate backlights altogether.

The next step, according to Guo and his team, is to find a way to mass produce these new filters and integrate them into several types of technological devices like televisions and cell phones.

Source: DailyTech

Tags: LCD

Comments
Add comment

Your name:
Sign in with:
or
Your comment:


Enter code:

E-mail (not required)
E-mail will not be disclosed to the third party


Last news

 
Galaxy Note10 really is built around a 6.7-inch display
 
You may still be able to download your content
 
Facebook, Messenger and Instagram are all going away
 
Minimize apps to a floating, always-on-top bubble
 
Japan Display has been providing LCDs for the iPhone XR, the only LCD model in Apple’s 2018 line-up
 
The 2001 operating system has reached its lowest share level
 
The entire TSMC 5nm design infrastructure is available now from TSMC
 
The smartphone uses a Snapdragon 660 processor running Android 9 Pie
The Samsung Galaxy A5 (2017) Review
The evolution of the successful smartphone, now with a waterproof body and USB Type-C
February 7, 2017 / 1
Samsung Galaxy TabPro S - a tablet with the Windows-keyboard
The first Windows-tablet with the 12-inch display Super AMOLED
June 7, 2016 /
Keyboards for iOS
Ten iOS keyboards review
July 18, 2015 /
Samsung E1200 Mobile Phone Review
A cheap phone with a good screen
March 8, 2015 / 4
Creative Sound Blaster Z sound card review
Good sound for those who are not satisfied with the onboard solution
September 25, 2014 / 2
Samsung Galaxy Gear: Smartwatch at High Price
The first smartwatch from Samsung - almost a smartphone with a small body
December 19, 2013 /
 
 

News Archive

 
 
SuMoTuWeThFrSa
 123456
78910111213
14151617181920
21222324252627
28293031   




Poll

Do you use microSD card with your phone?
or leave your own version in comments (15)