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Display device

  • US 7,274,416 B2
  • Filed: 02/07/2003
  • Issued: 09/25/2007
  • Est. Priority Date: 02/19/2002
  • Status: Expired due to Fees
First Claim
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1. A subtractive display device comprising picture elements having sub-pixels, each sub-pixel having, viewed during operation in a direction normal to substrates, at least two independently switchable electro-optical components, the device further comprising:

  • a color filter in which each sub-pixel color filter part absorbs or reflects one of a part of the optical spectral range, the parts of the optical spectral range being substantially non-overlapping, the device comprising means for controlling absorption or reflection of remaining parts of the spectral range in each sub-pixel by the at least two switchable electro-optical components, the non-overlapping ranges together covering the optical spectral range, wherein the electro-optical components further comprise at least two switchable electro-optical layers, comprising at least one first fluid and a second fluid respectively, and wherein the second fluid and the first fluid are immiscible.

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