SGF

Switchable Glazing Film

Next-Generation Optical Control Solution for Future Mobility Spaces

SGF (Switchable Glazing Film) is a next-generation optical control material that allows users to freely adjust optical transmittance with electrical voltage. Its structure features an optical control layer positioned between two electrode films, providing clear visibility in the ON state and effective light blocking with enhanced privacy protection in the OFF state.

As electric vehicles and glass roofs become more widespread, cars are evolving from simple “driving spaces” into immersive “experience spaces.” SGF is a key solution designed to meet this shift, offering differentiated design and a premium aesthetic. Leveraging advanced material technologies, LG Chem delivers a complete suite of SGF products to elevate the value of future mobility.

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Features

Low Haze<br>(On state)

Dimming<br>Control

Neutral<br>Black

Customized<br>Segmentation

Applications

Sunroof/Glass Roof

Side Window

Functions and Structure

• Intelligent Optical Control
Adjusts optical transmittance with applied voltage to optimize interior brightness and ensure privacy
• Low Haze for Superior Optical Clarity
Minimizes optical scattering in the ON state to deliver distortion-free visibility and a heightened sense of openness
• Dimming Control for Optimized Environments
Provides optimized light and shading levels for passengers through uniform dimming control
• Premium Design with Neutral Black Color
Achieves a deep black tone to enhance the luxury and seamlessness of glass-based designs
• Customized Segmentation for Zone Control
Implements zone control by using customized segmentation to independently adjust transmittance across different sunroof zones

Left: PDLC (Polymer Dispersed Liquid Crystal), Right: NCLC (Nano Capsule Liquid Crystal). The image shows PDLC as an optical control film with scattering-type shading, and NCLC as an optical control film featuring uniform dimming and Clear/Neutral Black tones.

- PDLC(Polymer Dispersed Liquid Crystal) : An optical control film based on a polymer-dispersed liquid crystal structure, delivering stable scattering-type shading performance and clear visibility control.
- NCLC(Nano Capsule Liquid Crystal) : A premium optical control film utilizing nano-encapsulation technology, enabling uniform intermediate dimming control and Clear/Neutral Black tone performance.

Product Group

Advanced Adhesive Products and Their Functions

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Related Media

Press Releases

LG Chem Enters the Automotive Switchable Film Market

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Product Classification

Product Classification :Category ,Grade ,Features ,Applications ,Download
Category	Grade	Features	Applications	Download
SGF	PDLC (Polymer Dispersed Liquid Crystal)	• Haze Black • Optimized liquid crystal–polymer composition for excellent optical clarity	• Suitable for premium and volume vehicle segments • Sunroof/Glass roof, Side window
SGF	NCLC (Nano Capsule Liquid Crystal)	• Clear Black • Nano-sized liquid crystal and dye encapsulation technology • Uniform dimming control	• Suitable for premium and volume vehicle segments • Sunroof/Glass roof, Side window

FAQ

SGF is a next-generation automotive optical control film that actively adjusts light transmittance in response to applied voltage. It enables seamless switching between transparent and shaded modes depending on driving and occupancy conditions, delivering both clear visibility and enhanced privacy.
Unlike conventional sunroof glass with fixed shading coatings, SGF allows real-time control of light transmittance through electrical signals. By optimizing brightness according to external conditions and occupant preferences, SGF enhances cabin comfort while simultaneously delivering a premium design and a differentiated spatial experience.
The two technologies differ in structure and optical control mechanisms. PDLC, based on a polymer-dispersed liquid crystal structure, excels in light-scattering shading. NCLC utilizes nano-encapsulation technology, enabling uniform intermediate dimming control, clear and neutral black tones, and faster response times. The optimal technology can be selected based on vehicle concept and application requirements.
SGF is applicable across a wide range of vehicles, from EVs and premium models to volume segments. It can be applied not only to sunroofs (sunroof/glass roof) but also to side windows. System-level design collaboration—including actuation, control, and wiring—can be customized to meet the specific requirements of each vehicle platform.
SGF is a highly customizable solution that integrates optical quality, gradation control, design tone, and zone-based control in alignment with the vehicle concept. This enables OEMs to strengthen both brand identity and the overall vehicle experience.
Recent trends in automotive glazing emphasize not only optical control but also advanced thermal management. In response, SGF—particularly based on NCLC technology—is under development with expanded thermal management performance in mind. This positions SGF for evolution into a next-generation glazing solution that integrates both optical and thermal control.

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Service Providers	Address	Transferred Personal Data	Data Center
LG CNS, Ltd	Parc1.Tower1, 108, Yeoui-daro Yeongdeungpo-gu, Seoul, 07335, Republic of Korea	Company name, Email, Phone number, Region	Korea

I agree to the Collection/Usage of Personal Information.

1. Personal Data Collected

A. The company collects the following types of personal data to respond to your inquiries and provide consultation.

- Company name, Email, Phone number

B. The data below may be automatically generated or collected when you use the Service.

2. Purposes of Collecting and Using Personal Data

A. LG Chem collects and uses personal data to provide customized services to their customers.

3. Period for Holding and Using Personal Data

If you do not want our company to hold your personal data, you may request that we delete it at any time. The data below shall be kept for the specified period for the reasons listed.

4. Cross-border Transfer

Personal Data collected by LG Chem may be transferred, where it necessary:

• to meet the purpose for which you have submitted the information;

• to enable you to be provided with information at a later date which may be of relevance and interest to you based on the nature and purpose of your requests;

• maintaining our operations or relationship management systems;

• security, quality and risk management reviews; or

• complying with any law and/or regulation.

Service Providers	Address	Transferred Personal Data	Data Center
LG CNS, Ltd	Parc1.Tower1, 108, Yeoui-daro Yeongdeungpo-gu, Seoul, 07335, Republic of Korea	Company name, Email, Phone number, Region	Korea

I agree to the Collection/Usage of Personal Information.

1. Personal Data Collected

A. The company collects the following types of personal data to respond to your inquiries and provide consultation.

- Email, Phone number

B. The data below may be automatically generated or collected when you use the Service.

2. Purposes of Collecting and Using Personal Data

A. LG Chem collects and uses personal data to provide customized services to their customers.

3. Period for Holding and Using Personal Data

If you do not want our company to hold your personal data, you may request that we delete it at any time. The data below shall be kept for the specified period for the reasons listed.

Holding data according to our internal policies - Retained items: Email, Phone number, type of inquiry, subject, and content - Retention Reason: Preventing service interference and cooperating in the investigations of illegal users - Retention period: 1 years from the date of processing the inquiry

4. Cross-border Transfer

Personal Data collected by LG Chem may be transferred, where it necessary:

• to meet the purpose for which you have submitted the information;

• to enable you to be provided with information at a later date which may be of relevance and interest to you based on the nature and purpose of your requests;

• maintaining our operations or relationship management systems;

• security, quality and risk management reviews; or

• complying with any law and/or regulation.

Service Providers	Address	Transferred Personal Data	Data Center
LG CNS, Ltd	Parc1.Tower1, 108, Yeoui-daro Yeongdeungpo-gu, Seoul, 07335, Republic of Korea	Email, Phone number	Korea

I agree to the Collection/Usage of Personal Information.

SGF

Next-Generation Optical Control Solution for Future Mobility Spaces​

Features

Low ​Haze​<br>(On state)

Dimming<br>Control

Neutral<br>Black

Customized<br>​Segmentation​

Applications

Sunroof/Glass Roof​

Side Window​

Functions and Structure

Product Group

Advanced Adhesive Products and Their Functions

Related Media

LG Chem Enters the Automotive Switchable Film Market

Product Classification

FAQ

Next-Generation Optical Control Solution for Future Mobility Spaces

Low Haze<br>(On state)

Customized<br>Segmentation

Sunroof/Glass Roof

Side Window