High Rigidity and Low Thermal Compaction Glass Substrate: OA-20

Glass substrate suitable for high-definition and automotive displays

Glass substrate designed for high-definition oxide TFT (IGZO) displays, OLED displays, and automotive displays that require high rigidity. It supports large substrates, including G8.5 and larger, driving innovation in next-generation, high-performance displays.

Applications
Features
Specifications

Applications

LCD displays
OLED displays

Features

Low thermal compaction
Demonstrates exceptional thermal dimensional stability in high-temperature processes for manufacturing high-definition and OLED displays with oxide TFTs.
High Young's modulus
Resistant to deflection and deformation, ensuring stability as a flat glass.
Superior optical properties
High transmittance and exceptional transparency.
High surface quality
Achieves a very smooth surface with outstanding flatness, even without polishing.
Support for large substrates
Accommodates large formats, including G8.5 and larger.

Specifications

Thermal Shrinkage

Transmittance

Properties

Properties/Glass code			OA-20
Density		×10³kg/m³	2.55
Coefficient of thermal expansion	30～380℃	×10^-7/K	37
Strain point		℃	725
Young's modulus		GPa	83
Poisson's ratio			0.2
Vickers hardness	Hv		670
Volume resistivity Logρ	350℃	Ω･cm	13.0
Dielectric constant	1MHz, 25℃		5.7
tanδ	1MHz, 25℃		0.001
Transmittance	λ=550nm	%	91
Refractive index (nd)	587.6nm		1.53
Chemical resistance	10%HCl（80℃-60min）		No surface alteration
Chemical resistance	63BHF（20℃-3min）		No surface alteration
Alkali oxide content		wt%	0.1 or less
As, Sb content		wt%	Not present (less than 0.1)