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Illumination device, method for driving the illumination device and display including the illumination device

  • US 6,066,920 A
  • Filed: 01/05/1998
  • Issued: 05/23/2000
  • Est. Priority Date: 01/07/1997
  • Status: Expired due to Term
First Claim
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1. An illumination device, comprising a cold cathode fluorescent tube having a heat capacity of about 0.035 Wsec/°

  • C. or less per unit length (1 cm) of a glass tube of a fluorescent section of the cold cathode fluorescent tube, wherein about 95% or more of a total surface area of the fluorescent section of the cold cathode fluorescent tube is exposed to air, and wherein about 50% or more of light emitted from the cold cathode fluorescent tube is utilized for illumination.

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