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Optical Bonding

  • International Display Consortium is a domestic resource in the optical bonding industry, offering the unique capability of achieving quality results through an automated process.  Located in Asheville, NC since 2012, the company’s capacity has grown to meet customer needs.
  • With capabilities to provide optical bonding for displays ranging from one inch LCDs to fifty-five inch commercial LCDs,  IDC is continually adapting to the demands of an ever changing display market.

Benefits of Optical Bonding

  • Visibility

The reduction of glare layers resulting in outdoor readability increasing up to 400%.

  • Ruggedness

Scratch, moisture, vibration and impact resistance. By utilizing full Optical Bonding, the strength of an LCD is improved by as much as 300%.

  • Temperature handling

IDC’s proprietary bonding resin is able to handle extreme temperature range as well as thermal shock all while maintaining its ability to remain bonded and optically clear while the additional mass of full optical bonding resin and cover glass provide larger “heat sink” effect to help dissipate undesired temperature extremes from the LCD.

  • Security

The application of safety glass can maintain function and secure your investment while including all the benefits above, perfect for remote customer access points or public displays.

Why Full Optical Bonding?

Full Optical Bonding advantages over Perimeter only bonding:

  • Superior LCD view-ability and brightness
  • No additional glare layers
  • Resistant to fogging and environmental defect
  • Greatly enhanced structural integrity

IDC Bonding Capabilities

  • Fully Automated Process
  • Modular Equipment Designs
  • In House Development Process
  • In House Equipment
  • Standard Quality Tests
  • Advanced Quality Testing

Industry Benefits and Examples of Past Projects

 

Construction equipment – Optical Bonding can give the capabilities for construction equipment to have a standard or touchscreen LCD display in outdoor environments.

  • LCD with touch or cover glass 7-10” dashboard integrated
  • Display bonded and sealed into housing (IP 55)

 

Industrial application – Impact and environmental resistance, increased visibility and durability are all of increased importance in today’s fast-paced industrial environments. When down-time cannot be afforded then using 100% quality tested, ruggedized display units becomes crucial.

  • LCD with touch 5-12” for high humid environment
  • LCD with cover glass 17” for low frequency vibration

 

Avionics Application – Vibration, G-shock and environmental extremes dictate extremely robust design. Our full Optical bonding combined with our ruggedized structural enhancements and increased backlight performance insure satisfactory performance under any conditions.

  • LCD with touch, cover glass and heater bonded to LCD-cell or complied-LCD
  • 3-10” for helicopter and aircrafts
  • Multi display application 2×17”, 3 x17” with one or two touches and one cover in glass (gorilla glass) or PC-plastic

 

Marine Application – Full Optical bonding seals sensitive displays to safely improve function when exposed to harsh environments including moisture, vibration, glare and difficult light and temperature extremes.

  • 8” display bonded with cover glass. Unit mounted into housing (IP68).

 

Military Application – In a world where the unknown is around every corner, military applications are by far some of the most demanding. Structural integrity and environment impermeability are of paramount importance when a soldier’s life is on the line.

  • 5 display with touch and cover glass for communication device integrated in uniform

 

Automotive application – Visibility in bright ambient situations can be paramount when relying on GPS for your directions.  Optical Bonding can also help to protect against accidental spills on the LCD display.

  • Prototyping 8” display as dash board unit for an OEM
    • Select bonding material
    • Develop solution for one inch frame drying
    • Calculate and prove bond line for this application
    • Bonding LCD with touch to plastic cover
    • Bonding 250 units and perform:
      • Climate shock test (-45 C to 85 C)
      • Vibration testing

 

Medical Application – Visibility in all lighting conditions is crucial, as is the ability to sterilize and maintain function during emergency situations in a range of environments.

  • 12 and 17” Cardiac Monitors and ultrasonic monitor
    • LCD with touch
    • LCD with touch and cover glass
    • Mounting units into housing
    • Modify Film stack
    • Improve light source

 

Digital Advertising and Kiosk – The additional structural integrity and environmental stability insure long life-cycle and superior performance from your public LCD display products.

 

Rework Capabilities

Our adhesive are fully re-workable and removable.  This is helpful in the event a display malfunctions, needs to be replaced or whatever other reason you would need to remove the cover glass from the display.

Reasons Optical Bonding Makes Sense over using an Industrial LCD Display Alone

Though widely specified as an industry standard display type, LCDs suffer from an inherent weakness due to their fragile nature. In outdoor, military or Avionics applications, a plain LCD display is not sufficiently armed against the punishment that the environment and the application can place on it. On almost all screens the polarizer material is hydrophilic (absorbs water) and can be damaged with prolonged exposure to moisture, even as gentle as morning dew. The outer surface of the screen is easily scratched, and the TFT layer is susceptible to cracking from impact or other static structural forces. Such damages will permanently destroy image quality. The Liquid crystal layer becomes unstable at extreme temperatures and Mura effects can be seen. Our patented, fully automated process provides a solution to these problems while adding the value of customer specified cover glass per their application. Whether a touch screen, Anti-reflective or Anti-glare glass, Heater or Anti-fog glass, or even a combination of these is needed, we can provide high quality, repeatable, optically superior bonding services to bond all your needs into a final package. With 100% quality testing available we can insure your products will work the first time, and every time. Should your product ever become damaged in the field, our process is completely rework able.  Damaged cover glass or malfunctioning LCD’s can be separated and replaced efficiently by a quick trip to our Asheville bonding facility.

Frequently Asked Questions

What is optical bonding? 

Optical bonding is the process of laminating cover glass or touchscreens to the LCD cell. An 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 & Visibility

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 visibility. 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?

There are three types of bonding: silicone cured with UV, urethane, and epoxy. We will focus on providing UV curable bonding because of its improved flexibility during the bonding process, but we have experience with all three types of bonding.

What other types of display enhancement services are available?

We can offer a variety of enhancements like 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.

We can also 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 you as an optical bonding vendor? 

Our optical bonding enhancement technologies make average TFT displays look fantastic. We have a full automated facility and longtime experience bonding overlays to display surfaces, from industrial application, to high performance cockpit AMLCDs. We can deliver consistent quality and predictable results because it has:

Extensive in‐house optical test verification capabilities

We have excellent relationships within the Asian display industry

How long have you been bonding overlays on displays? 

We have a long history of optically bonded displays. The company’s facility in Ashville, NC USA ( OD Bond ) has been environmentally encapsulating over 50,000 units. Our revenue is generated by more than 50 % with optical bonding for avionics applications.

What sizes can you bond?  

We are currently bonding up to 55” LCD panels.

What are prices?  

Prices vary based on size of the display, optical glass surface treatment, volume and lead time.

Have you 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 your bonding process result in the yellowing of displays that are exposed to UV light? 

We are using a 2 state of the art bonding material supplier. Both standard materials does not yellow displays that are exposed to UV light (UV visible light). We will perform yellowing test per customer’s standards to ensure and meet their expectations.