Upass Material Technology (Shanghai) Co.,Ltd.
Focus on polymer films.
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| STF (Switchable Transparent Film) is also known as PDLC (Polymer Dispersed Liquid Crystal) film, electronic dimming film, electronic curtain, etc. It is based on film technology. The rod-shaped polymer liquid crystalls mixing with prepolymer stick to transparent conductive base material, so that it simultaneously possesses charateristics of liquild and crystal. When powering off, polymer comes to the atomization of disorder. With polymer powering on, it is orderly arranged along with the direction of the electric field, which enables the film to have transmittance of the light. By controling the electric switch, It can be converted between transparent and opaque state. |
| The picture shows the principle diagram of the STF |
| The swichable liquid crystal transparent film is also called an electronically controlled smart PDLC flm |
| lt consists of two layers of flexible transparent conductive films (ITO film and PDLC) |
| The film is composed of PET film,ITO film,polymer and liquid crystal molecules. When the film is under off state, the randomly aligned liquid crystal molecules stay along on the walls of capsule, the reflection of liquid crystal molecules and polymer makes light disperses then it is opaque. While electricity supplied, these molecules arrange themselves in a specific direction then parallel light can pass through the film makes it transparent |
Parameters:
| Item | Performance / Unit | Testing Method and Standard | |
| Rated Voltage | ON | 36/48/60(AC50HZ) | Multimeter |
| Power Consumption | ON | 4-6w/(SQM) | Multi-parameter Electrical Measuring Instruments |
| Total Light Transmittance | ON | ＞83% | GB/T 2410-2008GB/Spectrophotometer |
| OFF | ＞67% | ||
| Directional Light Transmittance | ON | ＞80% | GB5137.2-2002 |
| OFF | ＜4% | ||
| Haze | ON | ＜4% | GB/T 2410-2008GB/Spectrophotomete |
| OFF | ＞96% | ||
| Response Time | ON | ＜40(MS) | Liquid Cystal Mutl-prareter. Measuring Instrument |
| OFF | ＜210(MS) | ||
| Operating Temperature | / | -30~70℃ | Constant Temperature and Humidly Testing Machine |
| Lifetime | ON | ＞100000(H) | GB18910.5- 2008 |
Application:
FAQ:
| 1. How does Smart Film work? or scattered and the film looks dark gray or white. In “On State” the light is transmitted and the film looks transparent. 1 roll / 60 square meter 1* box L146*W38*H38CM 4. What are your shipment terms? We deliver it by air/express transportation. Customer clear custom, release and deliver to final destination. 5. Is there a MOQ (Minimum of Quantity)? 1 square meter 6. What is the expected life of your products? Life expectancy is approximately 8-10 years or switch >2000000times. |
About Upass:
| Upass, founded in 2008, now as a governing unit of China Building Waterproof Association, a vice chairman unit of Professional Committee of China Modified Plastic Association, an enterprise with Triple A credibility in China Plastic Association, not only assists the development of the relevant industries, but also upholds the conception of sustainable development by successive technological innovation. Upass so far has acquired over 100 of intellectual property rights.
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