Transmissive and reflective type liquid crystal display

Details Transmissive and reflective type liquid crystal display Transmissive and reflective type liquid crystal display

2005-08-30

2005-08-30

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S096000

Reexamination Certificate

active

06937303

ABSTRACT:
Disclosed is a transmissive and reflective type LCD. In the LCD, a second substrate faces a first substrate. Liquid crystal layer is formed between the first and second substrate. A first polarizing plate is formed on outer surface of the first substrate. A second polarizing plate is formed on outer surface of the second substrate. A backlight is arranged at a rear side of the first polarizing plate. A transparent transflective film is arranged between the first polarizing plate and the backlight and has a plurality of layers where a first and a second layer each having different refractivity indexes are alternatively stacked. The transparent transflective film partially reflects and transmits incident light. By a restoring process occurring between the transflective film and the backlight, a predetermined amount of the incident light is transmitted through the transflective film repeatedly, so that transmissivity and light efficiency are enhanced.

REFERENCES:
patent: 6262842 (2001-07-01), Ouderkirk et al.
patent: 6344887 (2002-02-01), Ma et al.
patent: 6654094 (2003-11-01), Wu

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