Active matrix reflective guest-host LCD with pixel electrodes pa

Details Active matrix reflective guest-host LCD with pixel electrodes pa Active matrix reflective guest-host LCD with pixel electrodes pa

1997-07-14

1999-07-20

Dang, Hung Xuan

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349165, 349 42, 349 43, 349122, G02F 11335

Patent

active

059262427

ABSTRACT:
A reflective guest-host liquid-crystal display includes: a pair of upper and lower substrates joined together with a predetermined space therebetween; and a guest-host liquid-crystal layer which is held within the space and contains a dichroic dye. The upper substrate is provided with at least a counter electrode. At least thin-film transistors (TFTs), a reflective layer, a .lambda./4 phase shifter (quarter-wavelength plate), and pixel electrodes are formed on the lower substrate. The .lambda./4 phase shifter is formed above the TFTs and the reflective layer, and has contact holes connecting to the drain electrodes of the TFTs. The pixel electrodes are patterned on the .lambda./4 phase shifter and connected to the corresponding drain electrodes of the TFTs through the corresponding contact holes.

REFERENCES:
patent: 5499124 (1996-03-01), Vu et al.
patent: 5568294 (1996-10-01), Lee
patent: 5592318 (1997-01-01), Majima et al.
patent: 5742368 (1998-04-01), Chen

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