Technology Papers

A brief abstract of the paper is provided under the title. Should you wish more, simply clicking on the title will open the full paper in a new window.

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2006

Substrate-Free Cholesteric Liquid Crystal Displays.

• The paper demonstrates the first substrate-free cholesteric liquid crystal displays. The encapsulated cholesteric displays are ultra thin (with a total thickness of 19-21 µm) and ultra lightweight (0.002g/cm2). The displays exhibit unprecedented conformability, flexibility and drapability while maintaining electro-optical performance and mechanical integrity. All functional display layers are sequentially coated on a preparation substrate and then lifted-off from the preparation substrate to form a free standing display. We discuss display fabrication process, electro-optical performance, and display flexibility.

Cholesteric Reflective Displays: Thin and Flexible.

• At Kent Displays we make reflective displays with a thickness less than 30 microns and flexibility and drapability of cloth. Bistability combined with a capability for multiplexing at high resolution provides for displays in unique applications. The development of encapsulated cholesteric materials as well as the inkjet printing of conducting polymers renders continuous web processing possible.

Single Substrate Cholesteric Liquid Crystal Encapsulation via Polymerization Induced Phase Separation.

• Flexible bistable reflective cholesteric displays are made by encapsulating liquid crystal into droplet dispersions via polymerization induced phase separation on a single substrate. The encapsulated liquid crystal films are quite durable, can be created on plastic or fabric substrates and are coated with a conducting polymer to enable switching.

Flexible Ink Jet Printed Conductive Polymer Electrode Cholesteric Display.

• We report on the first flexible cholesteric display made with ink jet printed conducting polymers as top and bottom electrodes on thin plastic substrates. Ink jet printed conductive polymer electrodes provide ease of patterning as well as enable highly flexible displays. This paper focuses on deposition techniques and trade-offs and benefits of printed flexible electrodes.

Recent Progress in Flexible and Drapable Reflective Cholesteric Displays.

• In this paper, we present recent results from encapsulation work in developing flexible and drapable cholesteric liquid crystal displays on substrates such as thin plastics, fabrics, and even paper. The approaches to create flexible displays with single and dual substrate methods based on printable emulsions and polymerization induced phase separation techniques will be discussed.