Product

LCD Materials

LCD Materials

Photo Spacer

Applications

The switching of LCD pixels is initiated by changing electric fields of cells, thereby changing the arrangement of liquid crystals. When liquid crystals start to rotate under an electric field, the amount of light passing through the cell is controlled according to the rotational state of the liquid crystals.

Spacers maintain a constant height level at micron scales and precision level uniformity of cell gap dimensions for liquid crystals. Photo spacers also play an important role in providing acceptable elasticity and mechanical properties.

Process Method: Negative Photo Resist Process (Same as Color Resists)

 

 

Features
  1. High Sensitivity
  2. Superior Coating Uniformity
  3. High Elastic Recovery Ratio
  4. Excellent Mechanical Properties
Specifications

Product Name PSA028 PSA032
PSA033
HPS02 HPS16
Field of Application TN/VA/PSA TN/VA/PSA/COA AFFS AFFS
Features
  • Mura Free
  • Suitable for High Speed Coating
  • Large Process Window
  • Suitable for Hybrid PS Design
  • High Recovery Ratio
  • Low Volatile Compound
  • High Recovery Ratio
  • Low Volatile Compound
Physical Properties Viscosity (cPs) 3.5±0.3 5.1±0.3
4.3±0.3
4.2±0.3 4.2±0.3
Solid Content (%) 16.7±0.5 20.7±0.5
18.7±0.5
19.5±0.5 19.5±0.5
Remanent (%) 88.5±2 86.5±2 88±2 88±2
Resolution (um) 10*10 10*10 5*5 4*4
Height diff. between main & sub PS (25% Half tone) (um) N/A 0.5~0.8 0.7~0.8 0.5~0.6
Optical Properties Transmittance(460nm) (%) >96 >96 >96 >96
Transmittance(540nm) (%) >97 >97 >97 >97
Sensitivity (mj) 50 50 60 50
Mechanical Properties Hardness   5H 5H 8H 8H
Elastic Recovery Ratio (%) >85
(40mN, mask size:20x20um)
>85
(40mN, mask size:20x20um)
>80
(40mN, mask size:20x20um)
>80
(40mN, mask size:20x20um)
Adhesion Test   5B 5B 5B 5B
Electrical Properties Dielectric Constant   3.7 3.7 3.7 3.7
Voltage Holding Ratio (%) >95 >95 >95 >95
Electrical Properties Chemical Resistance Heat water/ KOH/
TMAH/ IPA/ GBL
Pass Pass Pass Pass