Vitswell PDLC Switchable glass

The market situation of smart windows

Recently the glass industry has shown a tendency to products based on energy saving and eco-friendly materials. accordingly, the smart window glass material as a new material is going to increase the awareness in the market. it has a transmittance adjusting function, with not only visible light transmittance but also UV and infrared ray transmittance. therefore smart window has been variously applied to construction sector, transport sector, and advertising sector


Smart window principle

Smart window uses the material of PDLC(Polymer Dispersed Liquid Crystal). PDLC film consists of two PET films. there is an ITO film between the two PET films in PDLC liquid crystals are dispersed into a liquid polymer. so the liquid mix of polymer and liquid crystals is placed between two layers of PET film. users can control PDLC film's transparency and opacity with the electrical on/off switch.

• only this kinds of smart blind film can be detachable on the surface of exiting glass
• highly transparent film state-of-the-art construction techniques and offers a clean and refreshing view with no line when it operation
• low-power consumption technology of 5w/㎡  to realizing energy saving effect
• it's possible to install and design by the world's largest widen size of 1,200mm

• film has various color for your choose such as Milky White, Gray, Dsrk Gray and so on

Smart Window and Smart Window classifiction

Background growth of Smart Window

The energy efficiency is likely to be a persistent concern of building managers, owners and construction companies throughout the period under consideration. Because smart windows are able to offer a clear and distinct solution here, we think that smart window makers will be able to ride the wave of energy shortage throughout the period under consideration. In reality most of the revenues that will be generated by smart window products will essentially be derived by the needs of building owners and managers to improve on energy conservation. Smart windows may be just what the doctor ordered when it comes to providing reduced energy use in buildings, because it can provide improvements in this regard of up to 40 percent.

Smart Window

The "smart" in " smart windows" can be used to describe many different kinds of functionality including futuristic capabilities such as windows that can double as panel lighting or solar panels. Smart windows carry out a function such as blocking or transmitting sunlight on-demand in response to an external stimulus, such as an electric current provided by the user. This technology is based on liquid crystals dispersed in a polymer matrix that are sensitive to electric fields. it dims through the use of diffraction of light upon application of an electric filed. Smart windows can be embedded in building codes and have the implicit effect of broadening the addressable markers for green building products. In the context of this development, smart windows may also from an important part of net zero energy buildings. The general trends that we have discussed here are ultimately based on various aspects of the significant energy efficiency benefits that smart windows can bring in their wake.

Smart window classifiction

Passive Smart window
Responds to non-electrical stimuli(heat, UV) can't be manually controlled

Active Smart window
Responds to an electrical stimulus and is controllable manually or automatically


EC(Electrochromic window)

• Used for exterior glass applications, for solar control
• Not used for interior privacy
• Long transition time from clear to opaque. larger windows can take five to 20 minute
• New glass must be installed no film option for existing glass
• Not used for privacy as you can still see through it in dark(tinted)state

                                  

PDLC(Polymer Dispersed Liquid Crystal)

• Can be used for interior or exterior glass application
• Switches from opaque(milky white or gray) to clear in less than a second
• Can run on standard 110-volt AC
• Available in a self-adhesive film that can be applied to existing window
• Provides total privacy in its opaque state(cannot be seen through)

SPD(Suspended Particle Devices)

• In suspended particle devices(SPDs) a thin film laminate of rod-like nano-scale particles is suspended in a liquid and placed between two pieces of glass or plastic, or attached to  to one layer
• When no voltage is applied the suspended particles are randomly organized thus blocking and adsorbing light 
• When voltage is applied the suspended particles align and let light pass
• Varying the voltage of the film varies the orientation of the suspended particle thereby regulating the tint of the glazing and amount of light transmitted
• The visible light transmission at the darkest state of SPD glazing is around 0.5% and the process takes one to three seconds after power is applied regardless of the size of the window
• The resulting dark blue shading blocks light and provides only partial privacy 

                                         

Source : Energy saving & High insulation material by National Technology Policy Center

             Next generation High-function & High sensitivity Smart Window Growth

Vitswell homepage : www.vitswell.com

Vitswell PDLC Film Features

• the world's first patented SSB section division film can be adjust incoming light freely.

• only this kinds of smart blind film can be detachable on the surface of exiting glass
• highly transparent film state-of-the-art construction techniques and offers a clean and refreshing view with no line when it operation.
• low-power consumption technology of 5W/㎡ to realizing energy saving effect.
• it's possible to install and design by the world's largest widen size of 1,200mm
• film has various color for your choose such as Milky White, Gray, Dark Gray and so on.

• it block 99% of Ultraviolet(UV) and 99% of infrared(IR) to protect furniture and floor from discolored.
• it is able to be applied to digital advertisement, screen and other various sectors as well.

vitswell homepage : www.vitswell.com

PDLC and Smart Window

The market situation of smart windows
Recently the glass industry has shown a tendency to produce products based on energy saving saving and eco-friendly materials. accordingly, the smart window glass material as a new material is going to increase the awareness in the market. it has a transmittance adjusting function, with not only visible light transmittance but also UV and infrared ray transmittance. therefore smart window has been variously applied to construction sector, transport sector, and advertising sector.

Smart windows history
Smart window is first developed by Dr edwin, the founder of the polaroid land in 1934. then a full-fledged research was conducted by newly founded RFI in 1965. in korea, korean glass manufacturer(Hangulas) introduced the core technology in the 1990, and then succeeded in producing large-sized products manufacturing technologies for architectural purpose. afterward, the hardcore research and development progressed from 2003.

Smart window principle
Smart window uses the material of PDLC(Polymer Dispersed Liquid Crystal). PDLC film consists of two PET films. there is an ITO film between the two PET films. in PDLC, liquid crystals are dispersed into a liquid polymer. so the liquid mix of polymer and liquid crystals is placed between two layers of PET films. users can control PDLC film's transparency and opacity with the electrical on/off switch.

Smart window technology development
Domestic
- 'korea institute of industrial technology' has developed the metal/metal oxide thin
   film material deposition process and technology development foe smart window                            applications.
   (source: smart window technology civil research information center)

- 'Sungkyunkwan university' has developed a simple-structured electrochromic
   device that dose not require application as an electrolyte in smart window.
   (source: futurecreation science)

 Overseas
- US company 'View' has developed and commercializad a thin film deposition process
   which creates a conductive layer between two glass panels to control the sun light
    and heat passing through from the sun.
    (sourse: smart window technology, engineering research information center)

- US nanotechnology company, raven brick, has developed PCM which applied                  nanotechnology and smart window which controls solar heat.
    (source: nano inside, neno convergence industry research association)

vitswell homepage : www.vitswell.com

Vitswell SSB(Smart Section Blinds) Rear Screen Type

Rear Screen Type

on horizontal, vertical, basic types of film possible to apply to the video screen blinds.
during the day, it protects interior space and privacy from strong natural light.
at night, i can be use as a large screen for projector represented indoor advertising and public relations. it's a utilitarian products and suitable for glass building and conference rooms. can be installed without the constraints of space, and the SSB control system can be controlled in conjunction with the home network.

vitswell homepage : www.vitswell.com

Vitswell SSB(Smart Section Blinds) Cross Type

Cross Type

with different sections it can be represented horizontal, vertical, basic type of various look. depending on the direction of the incoming light of the interior space this products can adjustment the light by several stage. if you want to apply the section based on the space it will improve the utilization of space, as well as can be represented to different atmosphere depending on the type of section of film. can be installed without the constraints of space, and the SSB control system can be controlled in conjunction with the home network.

vitswell homepage : www.vitswell.com

Vitswell SSB(Smart Section Blinds) Vertical Type

Vertical Type

it just like regular curtains from side ti side gently moving section controls the incoming the light through to interior space more beautifully. it also provide clean and clear view without any line, and can be adjusted section to protect from UV and protect your privacy. it's practical and beautiful product. it not only suitable for the living room but also on large windows. it can be installed without the constrains of space, and SSB control system can be controlled in conjunction with the home network.

vitswell homepage : www.vitswell.com