SiPix Imaging

SiPix Imaging. It was a pioneering technology company specializing in the development of electronic paper display technology, most notably its proprietary Microcup electrophoretic display platform. Founded in the mid-1990s, the company emerged as a significant competitor in the burgeoning e-paper market, challenging the dominance of E Ink Corporation. Its innovative approach to creating flexible, low-power electronic displays targeted applications ranging from e-readers to electronic shelf labels and smart cards.

History

The company was founded in 1996 by Dr. Hong-Da Hsu, a scientist with a background in materials science and display technology. Initial research and development were conducted in Fremont, California, with a focus on creating a robust and manufacturable alternative to existing electrophoretic technologies. A major milestone was reached in the early 2000s when it secured significant venture capital funding from firms like Kleiner Perkins Caufield & Byers and Mobius Venture Capital, enabling the scaling of its Microcup architecture. Throughout the 2000s, it engaged in a protracted intellectual property dispute with its primary rival, E Ink Corporation, involving numerous patent filings and litigation in courts like the United States International Trade Commission. The company's trajectory shifted dramatically in 2012 when it was acquired by the Taiwanese display manufacturing giant AU Optronics, which sought to integrate the technology into its portfolio of advanced display solutions.

Technology

The core innovation was the Microcup technology, a unique approach to electrophoretic display construction. Unlike the microencapsulation method pioneered by E Ink Corporation, the Microcup process involved creating millions of tiny, cup-like cavities on a flexible plastic substrate, each filled with charged pigment particles suspended in a clear fluid. This structure was then sealed with a flexible laminating process, resulting in a highly durable and flexible electronic paper film. The technology offered several touted advantages, including superior formability for curved displays, enhanced robustness against environmental stress like humidity, and a potentially simpler, roll-to-roll manufacturing process compared to glass-based LCD production. The fundamental electro-optical performance, involving the movement of white titanium dioxide and black carbon particles via an applied electric field, provided the high-contrast, bistable image characteristic of e-paper.

Products

The company's primary product was the Microcup electronic paper film, sold as a component to original equipment manufacturers and system integrators. This film was integrated into a variety of end-user devices, most notably the e-reader market, where it was used in products like the Biblio Leaf and the Sony Reader PRS-650 for certain markets. Beyond e-readers, the technology was commercialized in segments such as electronic shelf labels for retail environments, smart cards for access control and public transportation, and electronic signage for applications requiring low power consumption. The company also developed and licensed driver IC designs and provided module assembly services to facilitate the adoption of its displays by device makers in the consumer electronics and industrial design sectors.

Applications

The bistable and reflective nature of the technology made it ideal for any application where low power consumption, sunlight readability, and a paper-like viewing experience were paramount. Its most prominent application was in the e-book reader market, competing directly with displays from E Ink Corporation in devices sold by companies like Sony and various original design manufacturers. The flexibility of the Microcup film also opened applications in wearable technology, such as wristwatch displays, and in internet of things devices for status indicators. In retail, it was deployed in electronic price tags and promotional signage within chains like Wal-Mart. Additional uses were explored in electronic paper for architectural dynamic signage, logistics tracking labels, and even electronic skin for robotics.

Acquisitions and partnerships

The company pursued a strategy of strategic alliances to advance its technology and market reach. A key early partnership was with Arista Power for the development of integrated energy harvesting systems for electronic shelf labels. It also collaborated with Plastic Logic to combine its Microcup film with Plastic Logic's organic thin-film transistor backplanes, aiming to create fully flexible active-matrix displays. In the consumer electronics space, it formed supply agreements with Sony for certain e-reader models and with various Taiwanese ODM companies. The most significant corporate action was its ultimate acquisition by AU Optronics in 2012, a move that integrated the electronic paper technology into the larger AUO portfolio, though subsequent commercial development under the new ownership was limited. Prior to this, the company had also engaged in cross-licensing discussions and litigation settlements with E Ink Holdings concerning their respective patent portfolios.

Category:Defunct electronics companies of the United States Category:Display technology companies Category:Companies based in Fremont, California