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αGEL Solutions Optical Bonding

Silicone OCA (Optical Clear Adhesive) provides the long-lasting quality required in the automotive industry. This soft, yellowing resistant material allows for re-working of bonding defects and is available in a variety of thicknesses (max 1.8 mm). Taica proposes total optical bonding solutions to our customers, including advice regarding bonding and die cutting.

Click here for characteristics, application examples, benefits, and mechanism of function.>>

Advantages of αGEL silicone OCA

●High weather resistance
Silicone OCA posses high yellowing resistance from heat and ultraviolet. It also has low temperature dependence, which implements long-life performance in wide range of temperature.
●High gas permeability
The gas permeability of the Silicone OCA is high enough to release the outgas caused by plastic materials, and reduces risk of bubble occurrence.
●Stable Viscoelasticity
With its low temperature dependence, Silicone OCA enables stable performance in wide range of temperature(-40℃ to 200℃). In addition, its' vibration transmission ability works well in a specific frequency range . This feature is expected to add values in various of applications. (ex: HMI)
●Unique refractive index
Silicone OCA reduces refractions on surface of displays. This can prevent light reflection and image distortion. This feature is especially valuable to reflective displays which requires in-plain uniformity of the light diffusion. In this application, the Silicone OCA works as a light guiding panel providing increased brightness through its unique refractive index.
●Excellent flexibility
Excellent flexibility of Silicone OCA suppresses displays' mura and improves durability.
●High weather resistance
Silicone OCA posses high yellowing resistance from heat and ultraviolet. It also has low temperature dependence, which implements long-life performance in wide range of temperature.
●Stable Viscoelasticity
With its low temperature dependence, Silicone OCA enables stable performance in wide range of temperature(-40℃ to 200℃). In addition, its' vibration transmission ability works well in a specific frequency range . This feature is expected to add values in various of applications. (ex: HMI)
●Excellent flexibility
Excellent flexibility of Silicone OCA suppresses displays' mura and improves durability.
●High gas permeability
The gas permeability of the Silicone OCA is high enough to release the outgas caused by plastic materials, and reduces risk of bubble occurrence.
●Unique refractive index
Silicone OCA reduces refractions on surface of displays. This can prevent light reflection and image distortion. This feature is especially valuable to reflective displays which requires in-plain uniformity of the light diffusion. In this application, the Silicone OCA works as a light guiding panel providing increased brightness through its unique refractive index.
High weather resistance
 ーHigh transparency even in harsh environmentsー
Silicone OCA posses high yellowing resistance from heat and ultraviolet. It also has low temperature dependence, which implements long-life performance in wide range of temperature.

*Digital signage
Silicone OCA posses high yellowing resistance from heat and ultraviolet. It also has low temperature dependence, which implements long-life performance in wide range of temperature.
[Benefits]

Stable performance
(High and low temperature)

Yellowing
resistance

Yellowing
resistance
 

Silicone OCA(αGEL)

Acrylic OCA(Competitor)

*Images show yellowing of the displays after environmental testing

Stable Viscoelasticity
 ーStable viscoelasticity in wide range of temperatureー
With its low temperature dependence, Silicone OCA enables stable performance in wide range of temperature(-40℃ to 200℃). In addition, its' vibration transmission ability works well in a specific frequency range . This feature is expected to add values in various of applications. (ex: HMI)

*Haptic feedback display in automotives
With its low temperature dependence, Silicone OCA enables stable performance in wide range of temperature(-40℃ to 200℃). In addition, its' vibration transmission ability works well in a specific frequency range . This feature is expected to add values in various of applications. (ex: HMI)
[Benefits]

Stable performance
(High and low temperature)

Haptic feedback
characteristics

Silicone OCA(αGEL)

Acrylic OCA(Competitor)

*Temperature dependence data of dynamic viscoelasticity

Excellent flexibility
 ーExcellent shock absorption and gap-filling abilityー
Excellent flexibility of Silicone OCA suppresses displays' mura and improves durability.

*Industrial tablet
Excellent flexibility of Silicone OCA suppresses displays' mura and improves durability.
[Benefits]

Shock resistance

Stress relief

Silicone OCA(αGEL)

Acrylic OCA(Competitor)

*Image of display mura in environmental testing

High gas permeability
 ーBubble occurence reduced by its gas permeabilityー
The gas permeability of the Silicone OCA is high enough to release the outgas caused by plastic materials, and reduces risk of bubble occurrence.

*Curved/3D display
The gas permeability of the Silicone OCA is high enough to release the outgas caused by plastic materials, and reduces risk of bubble occurrence.
[Benefits]

High gas permeability

Bubble occurrence prevention

Silicone OCA(αGEL)

Acrylic OCA(Competitor)

*Image of bubble occurrence after environmental testing
(polycarbonate/OCA/polycarbonate, 95°C x 12 hours)

Unique refractive index
 ーEnhancement in visibility(brightness) by light diffusionー
Silicone OCA reduces refractions on surface of displays. This can prevent light reflection and image distortion. This feature is especially valuable to reflective displays which requires in-plain uniformity of the light diffusion. In this application, the Silicone OCA works as a light guiding panel providing increased brightness through its unique refractive index.

*E-paper
Silicone OCA reduces refractions on surface of displays. This can prevent light reflection and image distortion. This feature is especially valuable to reflective displays which requires in-plain uniformity of the light diffusion. In this application, the Silicone OCA works as a light guiding panel providing increased brightness through its unique refractive index.
[Benefits]

Refractive index 1.41

Light diffusion

Silicone OCA(αGEL)

Acrylic OCA(Competitor)

*Image of visibility in reflective display used outdoor

Applications

Automotive

Products

Silicone OCA
A silicone Optical Clear Adhesive (OCA) that fills air gaps between components in LCD displays, improving brightness and contrast.
Product Thickness(mm) Width(mm)
K120E(-D) t0.175/t0.2/
t0.25/t0.3/t0.5
460
K120E(-D) t0.8/t1.0 440
K95E(-D) t1.2/t1.5/t1.8 400

Product Details

Product Details

Shock Absorption Vibration Damping Heat Dissipation Haptic Management Water & Dust Proofing