Sunlight Readable LCD Technology - The AbraxSys Way

Behind the LCD
A typical liquid crystal display’s screen washes out to black when exposed to direct sunlight and ultra violet radiation. In order for AbraxSys rugged monitors and embedded LCD computers to operate in high light environments, AbraxSys monitors utilize various passive enhancements to increase the sunlight readability of the touch screen. AbraxSys sunlight readable touch panels utilize an anti-glare surface coating, transflective backlight enhancement film, and an anti-reflective internal coating on the back and front of the LCD behind the surface coating. These enhancements adapt to the index of refraction to decrease reflection; thereby increasing the ratio of contrast and maximizing overall daylight viewability in high ambient light environments. (See figure below).

Through the application of AbraxSys special coatings, filters, and films, the screen achieves readability in direct sun even when backlighting is not increased. The result is a display with viewability equivalent to that of a 1000+ nit high bright monitor while not increasing the power draw and without the extra heat generated by more backlights. As a result, Abraxsys LCD monitor systems maximize the operating life cycle of the systems, yield higher processor capability, and widen the range of operational temperatures.

   

After adding passive enhancements to AbraxSys LCD monitors, AbraxSys’ active enhancements are then implemented. AbraxSys sunlight viewable monitors utilize advanced backlighting systems which maximize the sunlight readability and luminance of the screen’s performance. AbraxSys rugged monitors also utilize LED and CCFL technologies to deliver the best sunlight readable solution for your industrial, commercial, or outdoor environment. AbraxSys LED backlights deliver an ultra-bright screen with a lower power-draw and lower heat levels compared to CCFL technology. All of these enhancements make AbraxSys ultra-bright, sunlight readable monitors and embedded computers achieve exceptionally higher luminance levels when compared to conventional and consumer grade LCD monitors. AbraxSys extreme-performance LCDs and computers produce the image intensity and display brilliance required from your sunlight readable systems.

Then we add our unique Optical Bonding procedure:

Improved contrast. Faster perception. Higher performance.

Maximize the readability and at-a-glance performance of TFT/AMLCD monitors by adding an optically bonded LCD TFT display from AbraxSys Corporation. Combining LED backlight enhancement, optical bonding, and optical coatings, AbraxSys can help you fulfill your LCD monitor and touch screen interface requirements in high light areas. AbraxSys offers a state of the art optical bonding production center with a proven record in producing high quality sunlight readable LCD systems. AbraxSys Corporation also offers comprehensive in-house optical contrast and luminance test verification, a certified clean room, and total environmental protections.

 

Key Benefits
• Increased contrast ratio with matched reflective laying
• Decreased backlight wattage while increasing sunlight viewability
• Bonding improves the overall integrity of the entire flat panel
• Eliminates "Greenhouse" effect caused by air between glass and screen
• Eliminates isotropic "black outs"
• Optical coatings diffuse reflection and reduce specular
• Much lower power draw required for battery powered devices with increased sun readability
• Certified clean room and other environmental protections
• Fast, responsive delivery and service. AbraxSys optical bonding systems are manufactured in U.S.A.

 

 

Typical LCDs are sufficient for most indoor environments, but do not provide enough readability outdoors or in industrial settings with harsh lighting. A typical LCD also lacks the protections to deliver high performance in rugged or extreme environment applications. OEM LCD companies do not produce LCD monitors and computers that perform in these extreme applications and conditions. A common option to enhance conventional LCDs are implementing passive enhancements such as coatings and optical bonding in order to decrease display washout while under direct sunlight. Another common tactic is to implement active enhancements that increase the brightness of the screen. AbraxSys’ line of high performance optically bonded LCD displays offer both active and passive enhancements to deliver high quality screen interfaces for high light or rugged industrial environments requiring hardened systems.

 

CONCLUSION
Screen brightness and luminance are important factors for industrial and commercial LCD monitors because they affect readability. The AbraxSys sunlight readable solution is to utilize both passive and active enhancements to deliver maximum brightness and decrease the power consumption of the backlight source. AbraxSys achieves high sunlight readable performance by applying optical coating, advanced design reflection pattersn on light guide bottom, unique radiation technology, and utilizing a LED light bar for backlighting technology (rather than CCFL). The AbraxSys high brightness solution increases the day-time and night-time visibility performance in a wide range of outdoor, industrial, and commercial applications. AbraxSys sunlight readable monitors are ideal for such applications such as Automated Teller Machines (ATMs), in-vehicle satellite televisions, telephone both screens, and commercial outdoor displays.

In order to satisfy the market for high brightness displays, Advantech develops our high brightness technology in-house and is guaranteed to meet your application needs. The Advantech high brightness solution can help enhance the LCD brightness up to 2,000 nits while increasing the color saturation and contrast. This screen brightness is substantially higher than an average LCD monitor’s luminance rating of around 300 – 500 nits. Another advantage of Advantech LCD enhancements are that they reduce the need for power consumption, resulting in displays that run cooler with minimal stress but maximum reliability.

BENEFITS

• Brightness up to 2,000 nits
• Enhanced sunlight readability
• High uniformity > 90%.
• Increased contrast ratio
• Wide dimming 0%~100%
• Low power consumption (ex. For 15” LCD, 1,700 nits <30W)
• Suitable for operation environment from -30℃ to 80℃
• Green process and material
• Long life well over 70,000 hrs

Our Optical Engineers are eager to discuss how our sunlight readable LCD display systems can solve your low/high ambient light application needs. Please contact us with any questions you may have, and our Optical Engineers will get in touch with you as soon as possible.