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LIGHT-GUIDING METHOD OF LIGHT-GUIDING PLATE AND KEY PAD ASSEMBLY USING THE LIGHT-GUIDING PLATE

  • US 20080218991A1
  • Filed: 03/07/2007
  • Published: 09/11/2008
  • Est. Priority Date: 03/07/2007
  • Status: Active Grant
First Claim
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1. A light-guiding method of a backlight source within a keycap, comprising the steps of:

  • a) preparing a light-guiding plate;

    b) forming on the light-guiding plate with a light-shielding structure for dividing the light-guiding plate into two light-guiding sections; and

    c) after at least two lights are introduced via the two light-guiding sections of the light-guiding plate, and when the optical paths of the two lights pass through the light-shielding structure, reducing the light entering the light-shielding structure an thus unable to pass through the light-shielding structure, thereby to form lights with different colors on the two light-guiding sections and project the light on the keycap.

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