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Reflective LCD with front light and protective member with window

  • US 6,650,382 B1
  • Filed: 06/15/2000
  • Issued: 11/18/2003
  • Est. Priority Date: 06/15/1999
  • Status: Expired due to Term
First Claim
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1. A reflective type liquid crystal display apparatus, comprising:

  • a reflective type liquid crystal display device for displaying images by reflecting incident light in such a manner that the incident light is separately controlled for each pixel;

    a front light positioned at a front face side of the reflective type liquid crystal display device, the front light including a light source and a light guide, wherein light emitted from the light source enters the light guide from an end face thereof near the light source, and the light is output from a large face of the light guide which faces the liquid crystal display device; and

    a protection member for covering at least part of the reflective type liquid crystal display device and at least part of the front light, wherein a window is formed in the protection member at a front face side of the front light for a viewer to observe the images displayed on the reflective type liquid crystal display device, wherein, at a side of the front light in which the light source is not provided, a distance between an end face of the window formed in the protection member and an end face of the light guide adjacent thereto is determined so that the end face of the window is laterally offset from the end face of the light guide and is closer to a central portion of a display area than is the end face of the light guide; and

    wherein the front light further comprises an optical film provided on the large face of the light guide which faces the liquid crystal display device, and wherein a two dimensional area defined by the optical film is greater than a two dimensional area defined by the window formed in the protection member, but less than a two dimensional area defined by the light guide, so that at least a portion of a peripheral edge of the optical film is located between the end face of the window and the end face of the light guide as viewed from a front of the display apparatus.

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