Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

2007-01-23

2007-01-23

Nelms, David (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S111000, C349S106000, C349S155000

Reexamination Certificate

active

10831685

ABSTRACT:
A color filter (30) includes a black matrix (33), and the black matrix has a first antireflection layer (331) and a second antireflection layer (332) on the first antireflection layer. Each antireflection layer includes a first antireflection film (3311, 3321) having a first refraction index, and a second antireflection film (3312, 3322) having a second refraction index which is different to the first refraction index. Because of so-called destructive interference of outside source light beams reflected from various interfaces defined by the first and second antireflection films, net reflection of the light beams by the black matrix back to an outside of the color filter is minimal. For similar reasons, net reflection of internal source light beams by the black matrix back to an inside of the color filter is minimal. As a result, visibility of a liquid crystal display device (300) employing the color filter is improved.

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patent: 6285424 (2001-09-01), Yoshida
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patent: 2003/0118922 (2003-06-01), Hayashi et al.
patent: 2003/0128311 (2003-07-01), Tsuda et al.

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