Reflection-type color liquid crystal display apparatus

Details Reflection-type color liquid crystal display apparatus Reflection-type color liquid crystal display apparatus

2005-03-15

2005-03-15

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

Reexamination Certificate

active

06867830

ABSTRACT:
A reflection type color liquid crystal display (LCD) device is disclosed that achieves achromatization in black and white as well intermediate scale display. The LCD device includes an active matrix substrate provided with a plurality of pixels each having a switching element and a reflection electrode in a matrix configuration, a liquid crystal layer between the substrate and a glass substrate, a phase plate and a polarization plate. The parameters of the above elements are designed such that projections of Stokes parameter (S1, S2, S3) of light between the phase plate and the liquid crystal layer on an S1-S2plane constitute a substantially linear line, and that at a reflecting plane of the reflection electrode, the polarization of the light is substantially circularly polarized for a normally black display and substantially linearly polarized for a normally white display over a wide wavelength range.

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M. Shibazaki, et al., Reflective LCD with High Brightness and Wide Viewing Angle by Using Optically Compensated Twist-LC Cell (OCT), SID 99 Digest, pp. 690-693.

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