In the capacitive touch screen, between the electodes, there is a slight current change by touching.By analyzing the current changes, the controller can detect the exact position of the touch. HCVAC can provide whole set capacitive touch screen vacuum coating equipment( includes : ITO transparent conductive film continuous coating production line, continuous metal layer coating production lines and surface hardened layer continuous coating production line) or provide a capacitive touch screen assembly whole plant turnkey projects.
Main process：
glass sheet→ITO coating→lithography process→insulation bridge→metal layer coating→lithography process→surface hardened layer
Core competencies:
•ITO/Metal coating equipment& coating technics
•ITO/Metal coating equipment& coating technics
•Modules processing technology
•IC supplier introduction
•Touchscreen evaluation practices
•Touch screen quality control method
| thermal conductivity λ (25 °C) |
0.96 W/(m•K)
|
| thermal capacity Cp (20 °C; 100 °C) |
0.84 KJ/(g•K)
|
| average line ecpansion rate平均线膨胀率 α (20 °C; 300 °C) |
8.8 • 10-6 K-1*
|
| glass transition temp Tg |
615 °C
|
| annealing point (1013 dPas) |
635 °C
|
| softening point (107.6 dPas) |
880 °C
|
| operating point (104 dPas) |
1265 °C
|
| Frequency |
Permittivity
|
Loss factor
|
| MHz |
ε´
|
tanδ
|
| 1 |
7.74
|
0.011
|
| 54 |
7.49
|
0.008
|
| 480 |
7.40
|
0.009
|
| 825 |
7.38
|
0.010
|
| 912 |
7.38
|
0.010
|
| 1977 |
7.35
|
0.012
|
| 2170 |
7.35
|
0.012
|
| 2986 |
7.34
|
0.012
|
| Volume resistivity ρD (A.C. at 50Hz) | ||
| v = 250 °C |
1.5 • 106 Ω•cm
|
|
| v = 350 °C |
8.9 • 104 Ω•cm
|
|
| Water resistance DIN ISO 719 | HGB 1 | ||
| Acid DIN 12116 | S 4 | ||
| Acid DIN ISO 695 | A 1 | ||
| 588 nm (nd) | 633 nm |
780 nm
|
|
| glass center | 1.508 | 1.506 |
1.502
|
| KNO3 exchanged compressive stress layer | 1.516 | 1.514 |
1.510
|
| Transmittance (glass thickness0.7mm) | |||
| --- 840 nm |
>91.5 %
|
||
| --- 560 nm |
>91.5 %
|
||
| --- 380 nm |
>90 %
|
||
| Photoelastic coefficient |
29.2 nm/cm/MPa
|
||
| Density | 2.477 g/cm3* |
| Youg modulus E | 74 kN/mm2 |
| Poisson's ratio | 0.215 |
| Knoop harness HK 0.1/20 | |
| Before harden | 534 |
| After harden | 693 |
| surface stress | Can reach 900 MPa |
| Ion exchange depth | Can reach 50 μm |
| 4 point bending stength | Can reach 800 MPa |
3.5 inch capacitive screen
5.0 inch capacitive screen
8.0寸 inch capacitive screen
DITO capacitive screen
SITO capacitive screen
Capacitive screen high permeability DITO/SITO
