HAYABEADS L-34 SERIES
Black Colored Spacer for LCD
Features
- L-34 series is acrylic micro sphere contained organic pigment
- It improves the contrast of LCD panel. Surface treatment material and micro holes on a particle prevent light leakage through particles and peripheral ones
- There are five kinds of surface treatment for different applications and properties of L.C.
- It has high reliability because of coloring by organic pigment
- It keeps good physical performances after heating
Chemical Composition
- Acrylic resin
- Organic pigment
Grade
Grade Average Diameter Interval * C.V. Value Application Package unit L-34S 4.0-7.0µm 0.1µm 2.7%±0.3% Negative mode STN, Color-STN, DSTN 10 gram / bottle L-34N 7.1-12.0µm 0.1µm 3.5%±0.5% Negative mode TN 10 gram / bottle L-34R 7.1-12.0µm 0.1µm 4.5%±0.5% Negative mode TN 10 gram / bottle * Interval of 0.05μm can be provided upon request
Types
Types | Features |
DD | It decreases light transmission through particles and peripheral ones. |
DE | It controls the alignment of L.C. stronger than DD. The molecules react on the surface of particles more than DD. And it has a good performance using dry type spraying device. |
EE | The surface treatment material of EE has a different molecular structure compared with DD and DE. It controls the alignment strongly. |
FN | The surface treatment material of FN, which has similar molecular structure to liquid crystal has good alignment controls. This type has affinity with liquid crystal, and it decreases the phenomenon of disclination between particles. |
BA | The surface treatment material of BA has more efficiency to the alignment control. And it is effective to decrease the phenomenon of disclination between particles. |
Comparison of Performance
Types | DD | DE | EE | FN | BA | |
Alignment Control Effect (Periphery of Particle) |
○ | ◎ | ◎ | ○ | ◎ | |
Alignment Control Effect (Disclination between Particles) |
△ | △ | △ | ○ | ○ | |
Spraying Suitability | DRY | △ | ◎ | ○ | ○ | × |
WET | ○ | ○ | ○ | ○ | ○ | |
◎ Excellent | ○ Good | △ Fair | × Poor |
General Properties
L-34S-DE @ 6.0µm | L-11S @ 6.0µm | Measuring Method | |
Specific Gravity | 1.38 | 1.33 | JIS K7112C |
Specific Resistance | 6.3×1015 Ωcm | 3.0×1015 Ωcm | JIS K6911 |
Dielectric Constant | 3.6(1KHz) 3.3(1MHz) |
4.0 (1KHz) | JIS K6911 |
Dielectric Tangent | 0.017 (1KHz) 0.024 (1MHz) |
0.020 (1KHz) | JIS K6911 |
Coefficient of Linear Expansion | 9.1 x 10-5/°C (20 - 175℃) |
5.0 x 10-5/°C (15 - 55℃) |
JIS K7197 |
Physical Properties and Heat Resistance
Condition | L-34S @ 6.0µm | L-11S @ 6.0µm | Measuring Method | |
Compression Strength kgf/mm2 |
20 ℃ | 78.7 | 105.9 | Shimadzu Micro Compression Tester MCTM-200 |
165 ℃×1H | 80.5 | 100.0 | ||
10% modulus kgf/mm2 |
20 ℃ | 70.7 | 65.1 | |
165 ℃×1H | 75.7 | 66.5 | ||
Recoverability % |
20 ℃ | 88.0 | 92.0 | |
165 ℃×1H | 87.0 | 91.9 |
Light Blocking Effect
L-34S @ 6.0µm | L-11S @ 6.0µm | Measuring | |
White | 1.46 | 0.05 | Penetrameter DM-500 Dainippon Screen |
Red | 1.34 | 0.03 | |
Green | 1.51 | 0.05 | |
Blue | 1.46 | 0.10 |
Chemical Impurity
Substance | Control limit | Detection | Inspection method |
Fe | 5ppm | ≤1ppm | ICP spectrophotometer |
Ca | 5ppm | ≤1ppm | |
Na | 5ppm | ≤1ppm | |
Cl | 10ppm | 6.1ppm | Ion chromatography |
Spraying Method
- Wet spraying
- Dry spraying