We present a flexible touch‐sensitive writing tablet utilizing a reflective bistable cholesteric liquid crystal laminated between two conductive‐polymer coated polyethylene‐terephthalate substrates. The device features a selective pressure response suitable for high‐resolution lines to be drawn into the screen. The device is inexpensive, conformable, and laser‐cut to any desired shape.
A new drive scheme is presented for producing uniform grays over large‐area, low‐resolution cholesteric liquid crystal displays. Gray‐level sensitivity to display non‐uniformities is minimized, which simplifies display manufacturing. While applicable to both rigid and flexible displays, the impact on flexible displays will be particularly important with roll to roll manufacturing capability coming online.
This paper describes new ultra-thin multicolor cholesteric liquid crystal displays with all functional layers coated sequentially on a single flexible substrate. Shared electrode driving is implemented for the first time to drive a passive matrix multicolor emulsion based displays comprising of three stacked layers of cholesteric droplets embedded in a polymer matrix.
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