The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 2000
Filed:
Dec. 20, 1999
Gail Monica Sylvester, Frankenmuth, MI (US);
Raymond Lippmann, Howell, MI (US);
Mark James Miller, Grand Blanc, MI (US);
Martin Lynn Adams, Flushing, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A backlighting system for a liquid crystal display (LCD) unit includes a first number of light emitting diodes (LEDs) configured to produce saturated radiation and a second number of LEDs configured to produce desaturated radiation, wherein the saturated and desaturated radiation is combined to form a resultant desaturated radiation of a target color. In a preferred embodiment, the colors and intensities of the first and second numbers of LEDs are chosen to produce a blue-green color of a typical vacuum fluorescent (VF) display unit, whereby the LCD unit may be used to simulated a typical VF display. By utilizing the concepts of the present invention, known dispersive effects associated with the LCD unit are minimized, and a substantially uniform light output from the LCD unit results regardless of a viewing angle relative to the normal of the viewing side of the LCD unit.