Method to optimize the color point in transflective color...

Details Method to optimize the color point in transflective color... Method to optimize the color point in transflective color...

2005-02-23

2009-12-22

Pak, Sung H (Department: 2874)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S106000

Reexamination Certificate

active

07636140

ABSTRACT:
The present invention relates to transflective color liquid crystal displays that provide for improved balancing and optimization of color and white points in transmissive and reflective mode. The invention is base on the deliberate increase of light absorbance at sub-pixels of selected colors. The light absorbance can be increased by the inclusion of light absorbing portions (803) on the transflector (800) at sub-pixel level, which then reduces the total reflectivity and/or transmittivity of that sub-pixel. Selecting the light absorbance in accordance with the present invention may be combined with the use of color filters having differentiated thickness and/or pinhole color filters.

REFERENCES:
patent: 6078370 (2000-06-01), Wang et al.
patent: 2003/0184694 (2003-10-01), Chang et al.
patent: 1279996 (2003-01-01), None
patent: 1357421 (2003-10-01), None
PCT International Search Report of Counterpart PCT Application No. PCT/IB2005/050663, Jun. 27, 2005.

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