Bi-Search International, Inc

Optical Bonding

BSI > Capabilities > Optical Bonding

OUR CAPABILITIES

Glass Bonding / OCA Bonding / OCR Bonding

Bi-Search International has been providing Optical Bonding services since 2013. Over many years of experience, we have established a base of materials and processes that can be tailored to your specific application. Whether it is indoor or outdoor, we have a solution for you. Our product have been pushed to the limits and are tried and true on the field.

What is Optical Bonding?

Optical Bonding is a process where a layer of resin (OCR) or film (OCA) adhesive is applied between the glass or touchscreen and TFT LCD panel of a monitor, bonding them to make a solid laminate with no gaps or pockets of air. When choosing a screen for any project, you should evaluate the environment and operating conditions the screen will have to endure. Industrial grade screens and panel PCs are made rugged with all types of features available to withstand any type of application. One such feature available to consider is Optical Bonding.

Optical Bonding is popular among the medical, military, transportation and retail sectors whereby a higher performing display is required due to the harsh environments. Optical Bonding is suited to industries that tend to use rugged displays in high reliability environments or industries where displays need to be seen in high ambient light conditions. The process of Optical Bonding is particularly well suited and much more effective when applied to devices that operate outdoors or in heavily lighted environments.

In-house automated Optical Bonding process with high accuracy and consistency

Capability to Glass Bonding

Capability to bond various sizes between 2.8” and 105” OCA Bonding and OCR Bonding

Class 1,000 / Class 10,000 Clean Room

Multiple OCR / OCA adhesive configurations depending upon performance / environmental requirement

Adjustable Optical Bonding line thickness

In-House equipment and testing

OCA Bonding

(Dry Bonding with Clear Adhesive Sheet)

OCA Bonding or Optical Clear Adhesive Bonding is an alternative form of bonding which is better suited for higher production volumes. OCA Bonding uses an optically clear adhesive film to bond a touch screen or cover glass to the surface of the display. Although there are some mechanical limitations to OCA Bonding. We offer multiple thickness of film which helps to over come those challenges.

Available Size: 2.0” - 65”

In-House Automated / Semi-Automated

Clean Room A

Class 1,000
2,500 Sq. Ft.

Clean Room B

Class 1,000
2,500 Sq. Ft.

OCR Bonding

(Wet Bonding with Clear Resin)

OCR Bonding, also known as Optically Clear Resin Bonding, is a techniques used to bond two or more surfaces together. OCR Bonding involves applying a thin layer of clear silicone-based resin between a display and cover glass or touch screen. This process can be done both manually and with automated equipment. OCR Bonding is preferred in applications where substrates are irregularly shaped or curved. Additionally, OCR Bonding can provide excellent optical clarity and minimize the appearance of visible gaps.

Available Size: 2.0” - 105”

In-House Automated / Semi-Automated

Benefits of
Optical Bonding

Optical Bonding reduces the number of air gaps between the glass and LCD module, which reduces reflections and glare. By bonding the glass and LCD module together, this results in improved contrast, color accuracy, and overall visibility, especially in bright outdoor environments. The reduction of internal reflections makes it easier to view the display under various lighting conditions.

Adding additional resin in optical bonding provides increased structural integrity of the display assembly. Optical bonding can make the display more resistant to physical impacts, scratches, and other potential sources of damage. This is particularly important for rugged devices, outdoor displays, and touchscreens in demanding environments.

In an environment with wide temperature ranges and fluctuating humidity, it is easy for condensation to cause screens to become foggy from moisture. Filling in air gaps between the glass and LCD module helps to prevent the potential of condensation and accumulation of moisture, dust, and other particles. This can extend the lifespan of the display and maintain its performance over time.

The air gaps between the glass and LCD module cause parallax which is a difference in the apparent position of an object viewed along two different lines of sight. Optical bonding removes the air gaps and reduces parallax error, resulting in a smoother and more natural touch experience.

Optical Bonding

OUR CAPABILITIES

Glass Bonding / OCA Bonding / OCR Bonding

What is Optical Bonding?

OCA Bonding

Clean Room A

Clean Room B

OCR Bonding

Benefits of
Optical Bonding

OUR PROCESS OF OPTICAL BONDING

LCD Panel to Glass Bonding

Incoming Inspection

Cleaning LCD Panel and Cover Glass or Touch Panel

Optical Bonding (LCD Panel to Glass Bonding)

Curing Bonding Material

Outgoing Inspection

Packaging

OUR PROCESS OF OPTICAL BONDING

LCD Module to Glass Bonding

Incoming Inspection

Disassemble LCD Module & Remove LCD Panel

Cleaning LCD Panel and Cover Glass or Touch Panel

Optical Bonding (LCD Panel to Glass Bonding)

Curing Bonding Material

Reassemble Bonded Panel to Module

Outgoing Inspection

Packaging

Incoming Inspection

Disassemble LCD Module & Remove LCD Panel

Cleaning LCD Panel and Cover Glass or Touch Panel

Optical Bonding (LCD Panel to Glass Bonding)

Curing Bonding Material

Reassemble Bonded Panel to Module

Outgoing Inspection

Packaging

Our Industries

Our Products