View Control Film is constructed of miniature 
black silicone rubber louvers in transparent silicone rubber, placed in between transparent polycarbonate or PET sheets.
The highly transparent silicone rubber allow the VC-Film to be used as an optical filter in front of display panels providing privacy or avoiding reflections of backlit displays in a car windshield. The supporting sheets of polycarbonate or PET can be equiped with hard-coat, adhesive tape or anti-reflection functions on request.
In principle, the VC-Film is made to custom design and requirements although certain view angles and louver angles are standardized to ease the supply. Special view angles, louver angles, louver colors and constructions are available on request.
VC-Film can be used on top of touchpanels based on capacity touch reading.
Construction and principle effects of VC-Film:
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Construction of VC-Film
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View angle and louver angle effect on light transmission
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Methods to apply VC-Film onto displays or glass panels b) common structure using a separate adhesive layer onto the support sheets to apply the VC-Film onto an application. |
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| Privacy protection in 4 directions for displays of cell phone with view in portret and landscape direction. | ||
Basic Properties:
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Unit
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Test method |
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Thermal characteristics
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Bending temperature
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°C
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126.8
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JIS-K-7207 |
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Linear expansion coefficient
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mm/mm/°C
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8.0•10-5
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ASTM-D-696 | |
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Heating contractibility
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%
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TD 0.15
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JIS-K-6735 | |
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%
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MD 0.10
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JIS-K-6735 | ||
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Combustivity
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See
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FMVSS-302 | |
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Mechanical characteristic
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Extensive strength
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kg/cm2
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300
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JIS-K-7113 |
| Stretch |
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110
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JIS-K-7113 | |
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Delamination strength
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kg/25 mm
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1.3
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JIS-K-6854 | |
| Optical characteristics | Ray transmission | % | 78 | JIS-K-7105 |
Environmental resistance charctereistics
| Test conditions | Delamination | Discoloration | Change of size | Bending | |
| High temperature test | 85°C (1000 hrs) | None | None | -0.03% | None |
| 120°C (240 hrs) | None | -0.04% | |||
| Low temperature test | -40°C (240 hrs) | None | None | ||
| High temperature-humidity test | 60°C/95%RH (240 hrs) | None | +0.02% | ||
| 80°C/95%RH (240 hrs) | None | -0.02% | |||
| Weather resistance test | 240 hrs | None | - | ||
| 480 hrs | A little discoloration | - | |||
| Thermal shock | -40°C (1 hr)↔85°C (1 hr) 100 cycles |
None | -0.02% | ||
| Heat cycle | 85°C (2hrs) → room T (2hrs) → -40°C (2hrs) → room T (2hrs) → 20 cycles |
None | None | -0.02% |
1. Sample used for all test: VC-908500.
2. Samples size for environmental resistance test is 100 x 20 mm.
3. Bending is measure on aluminium board by a gap gauge"
4. For weather resistance test, a sunshine-type weather meter is used
5. FMVSS: Federal Motor Vehicle Safety Standards
VC-Film standard configurations:
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Type
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Visible angle
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Louver angle
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Max. light
transmission angle |
Thickness
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Outer dimension
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VC-609500
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60°
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0° | 0° | 1.0 mm | 260 x 300 mm |
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VC-609510
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10° | 11° | |||
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VC-609518
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18° | 23° | |||
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VC-908500
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90°
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0° | 0° | 0.85 mm | |
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VC-908510
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10° | 11° | |||
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VC-908518
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18° | 23° | |||
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VC-128500
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120°
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0° | 0° | 0.85 mm | |
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VC-128510
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10° | 11° | |||
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VC-128518
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18° | 23° |
Note:
When the VC-Film is positioned at a small distance from the display, uneven brightness or Newton Rings may occur. To avoid this effect, a mat finish treatment can be applied to the support film.
Every item or numerical value indicated herein is measured by Shin-Etsu and out of guarantee.
Graphs and curves are for reference only. Actual results are up to the design.
The quality of the assembled VC-Film is out of guarantee.
Please make sure to review the purpose and conditions of use and practice you own tests.
Industrial ownership like patent doesn't guarantee the usage of the VC-Film.
