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 |
- High Sensitivity
- Superior Coating Uniformity
- High Elastic Recovery Ratio
- Excellent Mechanical Properties
Specifications |
Product Name | PSA028 | PSA032 PSA033 |
HPS02 | HPS16 | ||
Field of Application | TN/VA/PSA | TN/VA/PSA/COA | AFFS | AFFS | ||
Features |
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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) |
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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 |