What is optical bonding?
Optical bonding is the process of laminating cover glass or touchscreens to the LCD cell. SCA gel or other adhesive,is inserted between the cover glass and LCD to completely fill the air gap. The
assembly is cured in a process that affixes the panels together while solidifying the gel.
Why would someone need optical bonding?
Protection ‐ LCDs have plastic surfaces that are not vandal or weatherproof. To protect your display
investment most LCD installations require a cover glass or polycarbonate lens to protect the LCD.
Clarity & Viewability -Optical bonding eliminates the internal reflection between the LCD and the cover glass
or touchscreen because the bonding process creates a single index of refraction. Reducing internally reflected light loss increases display contrast and viewability. Improved display contrast enables displays to be more readily seen in bright ambient conditions, without increasing backlight brightness and the associated
unwanted higher power and higher operating temperatures.
Shake & Shock ‐ Optical bonding is an effective means of improving resistance to shake and shock. This
benefit is especially useful for military and transportation applications.
Dust & Moisture ‐ Filling the gap between the protective glass and LCD keeps out dust and moisture.
Condensation or dust can make a display unreadable.
Does optical bonding change a display’s operating temperature range?
No. Optical bonding only alters the surface of the display rather than the components, so the operating
temperature will not change.
What applications can benefit from optical bonding?
Any display in an outdoor environment or high ambient light conditions can be improved with optical
bonding. Example applications include in‐vehicle displays and digital signage, defibrillators, marine displays
and in‐flight entertainment systems.
What types of displays can benefit from optical bonding?
Optical bonding can be used on any type of direct view display technology, including AMLCD, plasma, passive LCD, monochrome and transparent electroluminescent, as well as new emerging flat technologies such as OLED (organic light emitting diodes).
What are the different types of bonding? What types will Jiutu offer?
There are three types of bonding: OCA OCF SCA gel cured with UV,Jiutu will focus on providing OCA OCF SCA gel bonding because of its improved flexibility during the bonding process, but it has experience with all three types of bonding.
What other types of display enhancement services are available?
Jiutu can add coatings and performance films to further enhance viewing performance by minimizing
specular reflections (mirror type reflection) or minimizing unwanted high ambient background light and
minimize fingerprints.
Jiutu can perform the following display enhancements:
Performance films and coatings
o Anti‐glare
o Anti‐reflective
o Linear and circular polarizers
o State‐of‐the art ITO EMI coatings
Vandal glass
EMI shields
Transparent display heaters
LED backlights
Touchscreens
What are the important selection criteria for choosing an optical bonding vendor?
Although simple in concept, the process of optical bonding actually involves numerous steps and requires
several diverse capabilities. Prospective vendors should:
Demonstrate a track record of optical bonding displays
Have in‐house capability and expertise to properly process your display in a low ESD (Electro Static
Discharge) and clean room environment
Test the enhanced displays for their target environments
There are numerous “garage shops” offering optical bonding, but only a few have comprehensive quality and engineering systems and processes in place to certify their work.
Why choose Jiutu as an optical bonding vendor?
Jiutu’s optical bonding and film enhancement technologies make average TFT displays look fantastic. Jiutu has more than 20 years’ experience bonding glass to display surfaces, from 100,000 electroluminescent (EL) displays, to high performance cockpit AMLCDs. Jiutu can deliver consistent quality and predictable results
because it has:
• ISO 9001‐quality systems
• MIL‐spec and FDA‐level standards
• Extensive in‐house optical test verification capabilities
• A certified clean room and other environmental controls
• Strong relationships within the Asian display industry
How long has Jiutu been bonding overlays on displays?
Jiutu has a long history of optically bonding displays. The company’s facility in China has been
environmentally encapsulating over 100,000 pieces of glass annually for more than 20 years. Jiutu also has
experience with optical bonding for avionics applications.
Where does the optical bonding process occur?
Jiutu’s optical bonding facility is located in China, The facility includes a class 10,000 clean
room with focused workstation environments of Class 10 to ensure proper handling of your displays during
the enhancement process.
Can I get a tour of the facility?
We welcome visitors to our facility and will gladly show off our optical bonding and other display
enhancement capabilities.
Will optical bonding be available on your standard catalog items?
Jiutu has a wide array of standard catalog items across a variety of applications and display technologies.
We are currently evaluating which parts of our product portfolio will be expanded with standard products
that include optical bonding and other popular display enhancements.
What sizes can you bond?
Up to some of the largest sized displays (e.g., 25”+)
What are prices?
Prices vary based on size of the display, optical glass surface treatment, volume and lead time.
Will Jiutu work with consigned displays?
It is our preference to own the entire supply chain for the optical bonding process to provide the best service,quality and cost control. However, if the need arises, Jiutu will consider consigned displays.
Has Jiutu done any reliability testing of the bonding process?
Yes, we have tested the critical performance metrics to a battery of military environmental and industrial
standards, which include temperature cycling and temperature shock extremes, humidity, altitude,
mechanical shock and vibration, liquid and dust ingress.
Does Jiutu’s bonding process result in the yellowing of displays that are exposed to UV light?
Jiutu uses OCA OCF SCA gel in our optical bonding process which does not yellow displays that are exposed to UV
light.
Post time: Oct-21-2019