Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1999-09-13
2000-09-05
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349138, 349158, 349160, G02F 11343, G02F 11333
Patent
active
061150967
ABSTRACT:
There is provided a liquid crystal display including (a) a first substrate with at least one recessed portion, (b) a second substrate spaced away from and facing the first substrate, (c) a liquid crystal layer sandwiched between the first and second substrates, (d) a first electrode formed on the first substrate at an upper surface facing the liquid crystal layer, (e) a second electrode, at least part of which is, formed on the recessed portion of the first substrate at a surface facing the liquid crystal layer, and cooperating with the first electrode to form a pixel, the first and second electrodes generating an electric field therebetween to thereby implement in-plane switching, and (f) an interlayer insulating film formed at least below the second electrode, but not formed at least below the first electrode, a dielectric layer formed between at least a part of an upper surface of the first electrode and the liquid crystal layer being designed to have a capacitance per a unit area, almost equal to a capacitance per a unit area of a dielectric layer formed between at least a part of an upper surface and the liquid crystal layer. In the above-mentioned liquid crystal display, since a dielectric distance between the first electrode and the liquid crystal layer is almost equal to a dielectric distance between the second electrode and the liquid crystal layer, it is possible to balance flexo-electric effects on the first and second electrodes, which ensures suppression in generation of after-images.
REFERENCES:
patent: 5399390 (1995-03-01), Akins
patent: 5514850 (1996-05-01), Miyazaki et al.
patent: 5572345 (1996-11-01), Yamazaki et al.
patent: 5907379 (1999-06-01), Kim et al.
patent: 5914761 (1999-06-01), Ohe et al.
patent: 5986735 (1999-11-01), Komatsu
NEC Corporation
Sikes William L.
Ton Toan
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