China pet film production companies, polyester film manufacturer-Yuxing Film

Brightening Film

CY20DP Pre-Coated Polyester Film

CY20DP pre-coated polyester film for brightness enhancement offers excellent performance and optical properties. After pre-coating on both sides of the substrate, it provides good and stable adhesion to the prism layer or back coating of brightness enhancement films and is mainly used as a brightness enhancement substrate for LCD backlight modules.

5B adhesion

LCD backlight module

Optical film substrate

Double-side pre-coating

Pre-coated brightness film

Product Model:

CY20DP

Key Highlights

Excellent optical properties

High transmittance (91.04-91.35%) and low haze provide superior clarity for LCD brightness enhancement applications.

Double-side pre-coated adhesion

After pre-coating on both sides, the substrate provides good and stable adhesion to the prism layer or back coating of brightness enhancement films.

Highly matched with composite optical films

Compatible with single brightness enhancement, MOP, POP, DPP, DOP, and other composite optical films.

Stable adhesion performance

Consistent 5B rating across all thicknesses ensures reliable bonding to prism layers and back coatings.

Technology & Advantages

Brightness enhancement substrates for LCD backlight modules typically require high transmittance, low haze, dimensional stability, and stable adhesion to prism layers or back coatings. With double-side pre-coating, CY20DP is suitable for multiple composite optical film structures.

Core Values

Optical compatibility:
High transmittance and low haze make it ideal for LCD backlight modules, ensuring excellent light transmission and minimal diffusion for brightness enhancement applications.

Adhesion support:
Provides good and stable adhesion to prism layers and back coatings after double-side pre-coating, ensuring reliable bonding and long-term durability.

Composite film compatibility:
Highly matched with single brightness enhancement, MOP, POP, DPP, DOP, and other composite optical films for diverse display applications.

Applications

LCD backlight module

Used as a brightness enhancement substrate for LCD backlight modules.

Brightness enhancement film

Suitable for structures requiring adhesion to prism layers or back coatings.

Composite optical film

Highly matched with single brightness enhancement, MOP, POP, DPP, DOP, and other composite optical films.

Technical Specifications

Properties	Unit	Standard	Typical Value
Thickness	μm	GB/T 13542.2-2021	50 / 75 / 100 / 125 / 175 / 188 / 250
Tensile Strength - MD	MPa	GB/T 13542.2-2021	167 / 167 / 171 / 203 / 188 / 190 / 178
Tensile Strength - TD	MPa	GB/T 13542.2-2021	212 / 219 / 217 / 204 / 195 / 190 / 182
Elongation at Break - MD	%	GB/T 13542.2-2021	162 / 161 / 164 / 152 / 161 / 161 / 165
Elongation at Break - TD	%	GB/T 13542.2-2021	115 / 114 / 114 / 119 / 133 / 126 / 160
Heat Shrinkage @150°C, 30min - MD	%	GB/T 13542.2-2021	0.99 / 1.04 / 0.95 / 0.74 / 0.53 / 0.63 / 0.95
Heat Shrinkage @150°C, 30min - TD	%	GB/T 13542.2-2021	-0.05 / -0.09 / -0.10 / 0.14 / 0.09 / 0.06 / 0.12
Transmittance	%	ASTM D1003	91.30 / 91.25 / 91.35 / 91.13 / 91.04 / 91.21 / 91.13
Haze	%	ASTM D1003	1.40 / 1.43 / 1.50 / 1.54 / 1.66 / 1.74 / 1.97
Adhesion Test	-	ASTM D3359	5B

Remark: MD refers to machine direction and TD refers to transverse direction. All items are delivery inspection items. Values for non-recommended nominal thicknesses are obtained by interpolation.