Self-Aligning Liquid Crystal Technology

Light Polymers’ liquid crystal nanochemistry makes light more useful and efficient.

Lyotropic Liquid Crystals

Lyotropic liquid crystals constitute a foundational chemistry platform with unique properties that improve products and lower costs for many applications, including LCD/OLED Displays, Augmented/Mixed Reality (AR/MR) and MicroLED.

Crystals That Flow

A liquid crystal is a substance that flows like a liquid but has some degree of ordering in the arrangement of its molecules. There are three major types of liquid crystals: Thermotropic, Lyotropic, Metallotropic.

Thermotropic LCs are either individual materials or mixtures of mesogens – the liquid crystal phase occurs in a certain temperature range. In the lyotropic phases, solvent (water) molecules fill the space around the compounds. Concentration and temperature are both important parameters in controlling LC properties.

Advantages of Lyotropic Liquid Crystal materials:

Liquid crystal formulations can be customized by adjusting parameters such as the molecular composition, concentration, solvent type, and processing conditions. This flexibility enables the design of materials with specific properties suited to particular applications.

Lyotropic liquid crystal materials have diverse applications, including optical devices, temperature sensors, and even in certain biological systems.

Lyotropic liquid crystal materials are substances that typically exist as solids but can form liquid crystal phases when dissolved in a suitable solvent. These materials are often composed of elongated or rod-like molecules that can “Self-align Themselves” in an ordered manner within the solvent, giving rise to the liquid crystal phase.

Formulation

At certain temperatures and concentrations, the solution becomes a nematic liquid crystal. “Phase of a liquid crystal characterized by arrangement of the long axes of the molecules in parallel lines but not layers.

Coating

Lyotropic liquid crystal materials are substances that typically exist as solids but can form liquid crystal phases when dissolved in a suitable solvent. These materials are often composed of elongated or rod-like molecules that can “Self Align Themselves” in an ordered manner within the solvent, giving rise to the liquid crystal phase.

Drying

Once the aligned liquid crystal solution is on the substrate and dried, it again forms a solid layer that has anisotropic properties. “Exhibiting properties with different values when measured along axes in different directions”

Variety of Stackable Small Molecules and Polymers

Colorless Lyotropic LCs absorb light in the UV range and are useful in making of Retarders. A very important application for retarders is that they are a part of Circular Polarizer.

Colorless

Colored

Colored Lyotropic LCs absorb light of the visible range and may be used in manufacturing of Linear Polarizers. For a ‘neutral’ color, a mixture of a few colors that covers the whole range of 400-800 nm is formulated.

Transparent, High Refractive Index, Polarizing Chemistry for the Display Industry

Light Polymers’ liquid crystal nanochemistry is used to create transparent, high refractive index OLED polarizer materials. Circular polarizers used today are made of two films: a standard linear polarizer and a “1⁄4 wave plate” compensation film with reverse dispersion of retardation properties. Light Polymers’ patented films are more durable during fold tests due to proprietary water-based chemistry and the elimination of fragile plastic substrates.

Polarizers developed by Light Polymers also eliminate costly extra film components while simplifies the overall manufacturing process. Transparent, high refractive index OLED polarizer materials enable next-generation display technologies with higher light efficiency at a lower cost. Other applications for this technology include flexible and foldable OLED displays, curved LCD, and privacy displays.

Our lyotropic liquid crystal chemistry enables both the thinnest and lowest cost circular polarization solution for the OLED display market. Wide viewing angles and an easy coating process means driving down display costs while offering a product that passes the 100,000 bend test for foldable materials. Light Polymers’ proprietary nanochemistry creates a circular polarizer at 4 µm, thinner than any competitive offering. A circular polarizer is an essential part of an OLED display as the component that reduces the reflections of light off of the mirror-like surface of an OLED panel. Without the circular polarizer, an OLED panel would act just like a mirror, reflecting all of the light back and rendering the OLED display unreadable.

Borderless displays with an edge-to-edge screen, one of the major advances in smartphones, use what is called a “Flexible OLED Display,” as it can wrap around the edge of the smartphone, and it is widely used in smartphone offering as well. Flexible display components were just the first step on the path to fully foldable displays. Light Polymers is now perfecting the foldable version of this circular polarizer that is thinner than any current competitive offerings. This technology pushes the industry one step closer to making foldable displays.

Water Based and Environmentally Friendly

Water-based coatable materials help keep our planet green by reducing the use of toxic organic solvents. Traditional OLED polarizer manufacturing involves dangerous solvents such as chloroform and chlorobenzene. Light Polymers’ polarizer technology is water-based, lowers manufacturing costs, is safer to produce and more environmentally friendly.

Lyotropic materials are common in nature, make up our muscles and many other biological systems. They have self-aligning properties, using only water as the key medium, and can help lower production costs by simplifying the coating and manufacturing processes. Light Polymers’ films are stable and the spectra emitted will not degrade over time.

In addition to lowering manufacturing costs by speeding up the process, Light Polymers’ proprietary chemistry eliminates the use of any surfactants or toxic chemicals. The unique formulations in Crystallin® films control the refractive index, enabling higher down-conversion efficiency and less waste heat. The manufacturing process is easy to scale, leading to substantial economic efficiencies in manufacturing Crystallin® lights compared to traditional LED fixtures.