Reflective liquid crystal display device having cholesteric...

Details Reflective liquid crystal display device having cholesteric... Reflective liquid crystal display device having cholesteric...

2005-06-21

2005-06-21

Parker, Kenneth (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S106000

Reexamination Certificate

active

06909485

ABSTRACT:
A reflective liquid crystal display device of the present invention includes: first and second substrates spaced apart from each other, the first and second substrates having sub-pixels; a liquid crystal layer interposed between the first and second substrates; a switching element and a pixel electrode on a rear surface of the second substrate, wherein the switching element and the pixel electrode are formed within a sub-pixel and electrically connected to each other; a retardation film and a polarizer formed in series on a front surface of the second substrate; a double-layered CCF on a front surface of the first substrate, the double-layered CCF including red, green and blue CLC color films in the sub-pixels that respectively reflect wavelengths of red, green and blue colored light so that the sub-pixels produce red, green and blue colors, respectively; and a common electrode on the double-layered CCF layer; wherein the double-layered CCF layer includes a first and second CLC layers, a first alignment layer between the first CLC layer and the first substrate, and a second alignment layer between the first and second CLC layers; wherein a surface of the first CLC layer on which the second alignment layer is formed is surface-reformed; and wherein the first CLC layer reflects first wavelength bands of the light and the second CLC layer reflects second wavelength bands of the light.

REFERENCES:
patent: 6778238 (2004-08-01), Moon et al.

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