×

Transflective liquid crystal display device with dual liquid crystal layer thickness and particular half wave plate angle

  • US 6,611,306 B2
  • Filed: 04/17/2001
  • Issued: 08/26/2003
  • Est. Priority Date: 04/17/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A transflective liquid crystal display (LCD) device, comprising:

  • first and second substrates facing and spaced apart from each other;

    a first polarizer formed under the first substrate;

    a half wave plate and a second polarizer that are formed in series on the second substrate;

    a backlight device being adjacent to the first polarizer;

    a common electrode on a surface of the second substrate facing the first substrate;

    a pixel electrode formed on the first substrate and corresponding to each pixel, the pixel electrode is divided into a transmissive portion and a reflective portion;

    a liquid crystal layer interposed between the first and second substrates, wherein a thickness of the liquid crystal layer between the common electrode and the transmissive portion of the pixel electrode is more than 1.5 and less than 2.5 times larger than a thickness of the liquid crystal layer between the common electrode and the reflective portion of the pixel electrode; and

    , within a range of about 10 degrees to 17.5 degrees wherein a slow axis of the half wave plate is disposed at an angle “

    θ



    from a transmissive axis of the second polarizer; and

    wherein a transmissive axis of the first polarizer is disposed at the angle “





    from the transmissive axis of the second polarizer.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×