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Home>Seoul Semiconductor Files Patent Litigation for Infringement of 12 Acrich Patents

Seoul Semiconductor Files Patent Litigation for Infringement of 12 Acrich Patents

Seoul Semiconductor Files Patent Litigation for Infringement of 12 Acrich Patents

09/19/2017

Seoul Semiconductor Files Patent Litigation for Infringement of 12 Acrich Patents

  • Seoul filed a patent infringement lawsuit against a lighting company in the U.S. asserting infringement of 12 Acrich patents
  • Acrich technology is an essential technology for high-voltage operation of LED products
  • Acrich technology has become widely adopted for general lighting, as well as electronic products including televisions

Seoul Semiconductor Co., Ltd. announced on September 19, 2017 that it has filed a patent infringement lawsuit, together with its affiliate, Seoul Viosys Co., Ltd., against Archipelago Lighting, Inc. in the U.S. District Court for the Central District of California.

In its complaint, Seoul asserts that Archipelago Lighting is selling various LED bulb products, including filament LED bulbs, that infringe on “twelve” (12) patents covering aspects of Seoul’s long-established Acrich technology. These Acrich patents include fundamental LED technologies, such as LED driver technology for high-voltage operation, MJT (Multi-Junction Technology), filament LED bulb structure, LED packaging, LED epitaxial growth, LED chip fabrication, etc.

In conventional LED products, one LED unit usually operates at a low voltage (3V) and high current. In order to increase brightness, one must connect many LED units through wire-bonding, but this can lead to other issues, such as an oversized, costly operating circuit, a substantial increase in manufacturing costs and defects caused by multiple wire-bonding connections.

Seoul’s Acrich technology resolves such problems by enabling the design of a high-voltage product with a high power output that relies on only a small number of LED units. Acrich technology does so by utilizing its innovative LED driver technology to enable high-voltage operation, as well as its unique MJT technology for mounting and integrating many LEDs within a small area. Seoul’s Acrich technology enables LED products to operate using AC power without requiring conversion to DC, minimizing power dissipation and reducing overall component count. This maximises the available space in LED products, facilitating a simple circuit design and significantly reducing the size and cost of LED products.

Acrich technology has become widely adopted not only in general lighting but also in electrical products and automotive lighting.

For example, in the general lighting market, 12V/18V high-voltage products have become increasingly popular, and there has been a significant increase in the demand for 36V/48V products. To manufacture such high-voltage products, Acrich technology is necessary to support LED driver technology for high-voltage operations with MJT technology. The innovative benefits of Acrich technology have resulted in its being applied in street lights and commercial lights in countries throughout the world, including locations as diverse as Korea, the United States, China, Europe, Southeast Asia, Mongolia and Kazakhstan.

In electronic products, Acrich technology is being increasingly used for valuable product lines such as large-area television displays. Acrich technology enables a dramatic enhancement in the service life and efficiency of such displays by simplifying their internal system. It also dramatically reduces the size and thickness of the final product, rendering it more pleasing to consumers, by reducing the amount of internal space previously reserved for complicated electric circuits. In particular, Acrich enables full-array local dimming that enhances the contrast range of the latest ultra-thin UHD display products by providing the next generation of backlighting solutions for high-definition displays.

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