Optical element and liquid crystal display device using the...

Details Optical element and liquid crystal display device using the... Optical element and liquid crystal display device using the...

2008-03-11

2008-03-11

Nelms, David (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S115000

Reexamination Certificate

active

10678590

ABSTRACT:
There are provided a liquid crystal display device, which positively reflects, by a reflecting electrode and a light-shielding layer, light emitted from a backlight and further reflected from a light-shielding layer or a reflecting layer, and recycles the light while avoiding absorption in a linearly polarizing plate to improve the utilization efficiency of light and thus to realize a bright display screen, and an optical element for use in the liquid crystal display device. The liquid crystal display device comprises: a polarizer for converting light emitted from a back light source to linearly polarized light; a reflecting layer comprising a reflection area part for reflecting the linearly polarized light converted by the polarizer and a transmission area part for transmitting the linearly polarized light converted by the polarizer; and at least one phase difference plate which is disposed so that only the light transmitted through the transmission area part after conversion of the light source-derived light to the linearly polarized light by the polarizer is incident to the phase difference plate.

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