7.4: A Flexible Plastic SVGA e-Paper Display

Abstract

We have developed a scalable manufacturing process for active matrix displays compatible with low temperature plastic substrates and have applied this technology to the fabrication of flexible SVGA display backplanes. We combined these backplanes with E Ink® Imaging Film to produce 100 PPI SVGA (800×600 pixel) displays exhibiting grey scale and with a high aperture ratio. Power consumption is zero in between image changes. Flexible high information content e‐paper displays will change the way in which information is conveyed by enabling lightweight, robust e‐reader devices.

Semiconducting Thienothiophene Copolymers: Design, Synthesis, Morphology, and Performance in Thin‐Film Organic Transistors

“…Both the current that can be delivered by the transistor and the charging speed depend on the semiconductor charge carrier mobility, and each application will have a minimum mobility requirement for optimal operation. [6,10] Low-performance displays are likely to be the first application for organic transistors, particularly electrophoretic displays on plastic substrates, [11] with low-resolution and sub-video refresh rates. As the electrophoretic display effect is reflective, the transistor can occupy a large fraction of the area underneath the pixel electrode area, thus enabling larger transistor electrode widths (W) and correspondingly larger currents, hence requiring lower charge carrier mobilities, which are further relaxed by the low display refresh rates.…”

Flexible electrophoretic display driven by solution‐processed organic thin‐film transistors

“…Organic thin-film-transistors (OTFTs) have been attracting much interest as switching devices for active-matrix flexible displays because they are inherently flexible, robust, and lightweight. [1][2][3][4][5][6][7][8] Both organic semiconductors (OSCs) and organic insulators have been used in OTFTs because these organic components have many advantages over conventional inorganic components. One significant advantage is that organic materials are soluble in many organic solvents, which allows many types of functional inks to be used in device fabrication.…”

“…These processes are considered to use less energy and materials than conventional processes such as high-temperature vacuum deposition. [4][5][6][7][8][9] Much effort has been expended to fabricate OTFTs by using such solution-based methods, and some OTFTs have been used to produce flexible electrophoretic displays (EPDs). For example, Burns et al developed a 10.1-in.…”

44.3: Flexible Electrophoretic Displays with Jet‐Printed Backplanes

“…Multilayer pixel designs have several benefits, including improved fill factor and light shielding of the pixel TFT [4,14,15]. A multi-layer pixel design requires additional processing steps including the patterning of a top layer dielectric which covers at least the data bus lines.…”